CA2183593C - Adhesive label - Google Patents
Adhesive label Download PDFInfo
- Publication number
- CA2183593C CA2183593C CA002183593A CA2183593A CA2183593C CA 2183593 C CA2183593 C CA 2183593C CA 002183593 A CA002183593 A CA 002183593A CA 2183593 A CA2183593 A CA 2183593A CA 2183593 C CA2183593 C CA 2183593C
- Authority
- CA
- Canada
- Prior art keywords
- layer
- imprint
- adhesive label
- adhesive
- cover foil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 79
- 239000000853 adhesive Substances 0.000 title claims abstract description 78
- 239000010410 layer Substances 0.000 claims abstract description 216
- 239000011888 foil Substances 0.000 claims abstract description 106
- 229910052751 metal Inorganic materials 0.000 claims abstract description 49
- 239000002184 metal Substances 0.000 claims abstract description 49
- 239000004821 Contact adhesive Substances 0.000 claims abstract description 38
- 230000004888 barrier function Effects 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims abstract description 10
- 230000005012 migration Effects 0.000 claims abstract description 4
- 238000013508 migration Methods 0.000 claims abstract description 4
- 239000012939 laminating adhesive Substances 0.000 claims description 46
- 239000004922 lacquer Substances 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 230000000284 resting effect Effects 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 5
- 230000008020 evaporation Effects 0.000 claims description 5
- 238000001704 evaporation Methods 0.000 claims description 5
- 239000004417 polycarbonate Substances 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000004848 polyfunctional curative Substances 0.000 claims description 5
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 4
- 239000004800 polyvinyl chloride Substances 0.000 claims description 4
- 239000004952 Polyamide Substances 0.000 claims description 3
- 239000007791 liquid phase Substances 0.000 claims description 3
- 229920002647 polyamide Polymers 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000004793 Polystyrene Substances 0.000 claims description 2
- 230000001699 photocatalysis Effects 0.000 claims description 2
- 229920002223 polystyrene Polymers 0.000 claims description 2
- 239000000976 ink Substances 0.000 claims 3
- 239000004615 ingredient Substances 0.000 claims 1
- 239000003960 organic solvent Substances 0.000 claims 1
- 229910052755 nonmetal Inorganic materials 0.000 abstract 1
- 238000000034 method Methods 0.000 description 8
- 229910052782 aluminium Inorganic materials 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000003086 colorant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000005684 electric field Effects 0.000 description 4
- 238000010292 electrical insulation Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000005026 oriented polypropylene Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000003851 corona treatment Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 239000012205 single-component adhesive Substances 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F3/00—Labels, tag tickets, or similar identification or indication means; Seals; Postage or like stamps
- G09F3/08—Fastening or securing by means not forming part of the material of the label itself
- G09F3/10—Fastening or securing by means not forming part of the material of the label itself by an adhesive layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
- Y10T428/24851—Intermediate layer is discontinuous or differential
- Y10T428/24868—Translucent outer layer
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
- Y10T428/2848—Three or more layers
Abstract
An adhesive label (1)for application upon a circumferential surface (50) of a dry cell battery having an axis and end surfaces (51,51) includes: a stretched, shrinkable, transparent cover foil (3) with a top side and a bottom side, an imprint (5) located beneath the cover foil (3) on its bottom side is visible from the top side. A contact adhesive layer (13) is located beneath the imprint (5). The adhesive label (1) further comprises first edge segments (19,19) along a generatrix line of the circumferential surface of the battery (50) which can be superimposed in an overlapping manner and second edge segments (17, 17) projecting axially beyond the end surfaces (51, 51) of the battery, which end segments (17, 17) rest upon the end surfaces (51, 51) by shrinkage of the cover foil (3). The imprint (5) is applied directly upon the bottom side of the cover foil (3). A metal layer (7), non-metal layer (9), a combination thereof (11) or flexible barrier layer (21, 21a, 21b, 22) between the imprint (5) and contact adhesive layer (13) prevents migration of solvent, from the contact adhesive layer (13), and electrolyte, from residues on the surface of the battery, into the imprint (5).
Description
ADHESIVE LABEL
The invention relates to an adhesive label for application upon a circumferential surface of a dry-cell battery having an axis, and top and bottom-surfaces. The adhesive label comprises a stretched, shrinkable, transparent cover foil with a top side and a bottom side, and an imprint visible from the top side located beneath the cover foil and on the bottom side thereof. A contact adhesive layer is located beneath the imprint and a barrier layer lies between the imprint and the contact adhesive layer. The adhesive label comprises along a generatrix line of the circumferential surface of the battery first edge segments superimposable in an overlapping fashion and second edge segments protruding or projecting beyond the end surfaces of the battery, which rest upon the end surfaces of the battery when the cover foil is shrunk.
The cover foil provides protection for the battery against leakage and furthermore protects the label layers located beneath the cover foil, in particular the imprint, from mechanical damage. In addition, the cover foil electrically insulates the circumferential surface of the battery against the environment. If a layer beneath the cover foil is electrically conductive, the cover foil also insulates this layer against the environment. Various adhesive labels of this type are known from DE 33 42 309. These conventional adhesive labels are produced in such a way, that several layers partially formed from shrinkable foil are applied on a carrier layer located at the bottom in the finished label, with the topmost of these layers being provided with an imprint. The cover foil must then be fastened to the label material carrying the imprint. In order for the cover foil to adhere to the imprint, it is necessary to apply beforehand a separate laminating adhesive layer upon the imprint. The laminating adhesive must satisfy particularly demanding requirements, if the adhesive label is to fulfill its function of protecting against leakage, being non-fading as well ~s being durable in storage.
The invention provides an adhesive label of the above-mentioned type, which can be manufactured more simply, and particularly by a different method than those used in the prior art. The adhesive label of the invention meets the different requirements of various battery types by providing a greater flexibility in the build-up of the layers. The imprint is applied in the invented adhesive label directly to the bottom side of the cover foil.
Contrary to the above-mentioned known adhesive labels, the build-up of the different layers of the present adhesive label proceeds from the cover foil. The printing is applied directly to the cover foil. The imprinted cover foil may in further fabrication steps be placed upon a composite succession of previously prepared label layers, preferably however the additional layers are consecutively placed upon the cover foil carrying the imprint. One single shrinkable foil, the cover foil, is sufficient.
A barrier layer is placed upon the imprinted and the imprint-free partial surfaces of the cover foil and lies between the cover foil/imprint layer and the contact adhesive layer. The contact adhesive layer may provide the prevalent carrier function for the label material or, however, it can assume a carrier function subordinate to the cover foil.
The connection between the barrier layer and the cover foil may be insufficient depending on the material selected for the cover foil. In such cases it is preferred to apply, preferably thermosensitively, a transparent primer layer upon the imprinted cover foil and upon this transparent primer layer to then apply the barrier layer.
The invention relates to an adhesive label for application upon a circumferential surface of a dry-cell battery having an axis, and top and bottom-surfaces. The adhesive label comprises a stretched, shrinkable, transparent cover foil with a top side and a bottom side, and an imprint visible from the top side located beneath the cover foil and on the bottom side thereof. A contact adhesive layer is located beneath the imprint and a barrier layer lies between the imprint and the contact adhesive layer. The adhesive label comprises along a generatrix line of the circumferential surface of the battery first edge segments superimposable in an overlapping fashion and second edge segments protruding or projecting beyond the end surfaces of the battery, which rest upon the end surfaces of the battery when the cover foil is shrunk.
The cover foil provides protection for the battery against leakage and furthermore protects the label layers located beneath the cover foil, in particular the imprint, from mechanical damage. In addition, the cover foil electrically insulates the circumferential surface of the battery against the environment. If a layer beneath the cover foil is electrically conductive, the cover foil also insulates this layer against the environment. Various adhesive labels of this type are known from DE 33 42 309. These conventional adhesive labels are produced in such a way, that several layers partially formed from shrinkable foil are applied on a carrier layer located at the bottom in the finished label, with the topmost of these layers being provided with an imprint. The cover foil must then be fastened to the label material carrying the imprint. In order for the cover foil to adhere to the imprint, it is necessary to apply beforehand a separate laminating adhesive layer upon the imprint. The laminating adhesive must satisfy particularly demanding requirements, if the adhesive label is to fulfill its function of protecting against leakage, being non-fading as well ~s being durable in storage.
The invention provides an adhesive label of the above-mentioned type, which can be manufactured more simply, and particularly by a different method than those used in the prior art. The adhesive label of the invention meets the different requirements of various battery types by providing a greater flexibility in the build-up of the layers. The imprint is applied in the invented adhesive label directly to the bottom side of the cover foil.
Contrary to the above-mentioned known adhesive labels, the build-up of the different layers of the present adhesive label proceeds from the cover foil. The printing is applied directly to the cover foil. The imprinted cover foil may in further fabrication steps be placed upon a composite succession of previously prepared label layers, preferably however the additional layers are consecutively placed upon the cover foil carrying the imprint. One single shrinkable foil, the cover foil, is sufficient.
A barrier layer is placed upon the imprinted and the imprint-free partial surfaces of the cover foil and lies between the cover foil/imprint layer and the contact adhesive layer. The contact adhesive layer may provide the prevalent carrier function for the label material or, however, it can assume a carrier function subordinate to the cover foil.
The connection between the barrier layer and the cover foil may be insufficient depending on the material selected for the cover foil. In such cases it is preferred to apply, preferably thermosensitively, a transparent primer layer upon the imprinted cover foil and upon this transparent primer layer to then apply the barrier layer.
The layer carrying the contact adhesive may be formed from non-metallic materials, as for instance paper or plastics, wherein it is preferred that the non-metallic material be limited to the surfaces of the adhesive labels with the exception of the first border segments and thus corresponding exactly to the length of the circumferential surface of the battery. Alternatively, the carrying layer may be formed from metallic materials, in particular by a layer applied by aluminum vapor deposition in a vacuum. The material selection depends on the desired appearance of the label from the outside, since the layer carrying the contact adhesive constitutes a background for the imprint visible from the outside.
Furthermore, the layer carrying the contact adhesive may be formed by a composite arrangement of a bottom non-metallic partial layer, in particular paper, and a metallic partial layer, especially aluminum foil, resting on the non-metallic partial layer. The metallic partial layer is preferably limited to the surfaces of the adhesive label excluding the second border segments and thus corresponds exactly to the height of the battery cylinder. This version results in an appealing background for the imprint and a particularly thin aluminum foil can be used without affecting the thickness of the adhesive label, in particular, when a cover foil dimensioned to be very thin is used.
Preferably, the metallic partial layer is applied to the non-metallic partial layer as a foil by the foil transfer method, i.e. it is vapor-deposited or sputtered upon the non-metallic partial layer.
In another particularly simple to manufacture embodiment, the contact adhesive layer lies directly upon the barrier layer.
The layer carrying the contact adhesive in this embodiment is eliminated. The cover foil is in this case the sole firm layer of the label and it alone assumes the carrier function. This embodiment can be manufactured to be particularly thin because of the thinness of the layers, wherein the space, subject to standards specified for the dry cell battery, for filling the battery is increased.
The imprint is preferably printed upon the cover foil in colors from organic solutions or a photocatalytic system without solvents by the mirror image and reverse printing technique, i.e. from below directly upon the cover foil in a mirror image manner, so that the imprint can be seen correctly from the top. These color systems are particularly suited for imprinting the shrinkable foil without changing or exfoliating in the course of the shrinkage process. Furthermore, they have the electrical characteristics required for dry-cell batteries and are resistant to chemicals, which is particularly important in view of the leakage protection function of the battery label.
The cover foil is preferably made from shrinkable hard polyvinyl chloride, polypropylene, polystyrol, polyamide, particularly of a thickness of 25 to 60 micrometers, or from polyethylene terephthalate or polycarbonate, in particular of a thickness of 10 to 60 micrometers, so that the adhesive label, after being shrunk upon the battery, adheres as firmly as possible, and so that the adhesive label does not peel off the body of the battery when subjected to unfavorable environmental conditions. The cover foil is stretched in a circumferential direction of the dry-cell battery, so that the adhesive label has the greatest pre-stressing in the circumferential direction after being shrunk on the battery.
In the following, the invention is further explained with reference to the exemplary embodiments shown in the accompanying drawings, in which:
Furthermore, the layer carrying the contact adhesive may be formed by a composite arrangement of a bottom non-metallic partial layer, in particular paper, and a metallic partial layer, especially aluminum foil, resting on the non-metallic partial layer. The metallic partial layer is preferably limited to the surfaces of the adhesive label excluding the second border segments and thus corresponds exactly to the height of the battery cylinder. This version results in an appealing background for the imprint and a particularly thin aluminum foil can be used without affecting the thickness of the adhesive label, in particular, when a cover foil dimensioned to be very thin is used.
Preferably, the metallic partial layer is applied to the non-metallic partial layer as a foil by the foil transfer method, i.e. it is vapor-deposited or sputtered upon the non-metallic partial layer.
In another particularly simple to manufacture embodiment, the contact adhesive layer lies directly upon the barrier layer.
The layer carrying the contact adhesive in this embodiment is eliminated. The cover foil is in this case the sole firm layer of the label and it alone assumes the carrier function. This embodiment can be manufactured to be particularly thin because of the thinness of the layers, wherein the space, subject to standards specified for the dry cell battery, for filling the battery is increased.
The imprint is preferably printed upon the cover foil in colors from organic solutions or a photocatalytic system without solvents by the mirror image and reverse printing technique, i.e. from below directly upon the cover foil in a mirror image manner, so that the imprint can be seen correctly from the top. These color systems are particularly suited for imprinting the shrinkable foil without changing or exfoliating in the course of the shrinkage process. Furthermore, they have the electrical characteristics required for dry-cell batteries and are resistant to chemicals, which is particularly important in view of the leakage protection function of the battery label.
The cover foil is preferably made from shrinkable hard polyvinyl chloride, polypropylene, polystyrol, polyamide, particularly of a thickness of 25 to 60 micrometers, or from polyethylene terephthalate or polycarbonate, in particular of a thickness of 10 to 60 micrometers, so that the adhesive label, after being shrunk upon the battery, adheres as firmly as possible, and so that the adhesive label does not peel off the body of the battery when subjected to unfavorable environmental conditions. The cover foil is stretched in a circumferential direction of the dry-cell battery, so that the adhesive label has the greatest pre-stressing in the circumferential direction after being shrunk on the battery.
In the following, the invention is further explained with reference to the exemplary embodiments shown in the accompanying drawings, in which:
Fig. 1 Shows diagrammatically the, application of an adhesive label upon a cylindrical body of a dry-cell battery;
Fig. 2 Shows a first embodiment of an adhesive label in cross-section;
Fig. 3 Shows a second embodiment of an adhesive label in cross-section;
Fig. 4 Shows a third embodiment of an adhesive label in cross-section;
Fig. 5 Shows a fourth embodiment of an adhesive label in cross-section;
Fig. 6 Shows a fifth embodiment of an adhesive label in cross-section;
Fig. 7 Shows a sixth embodiment of an adhesive label in cross-section;
Fig. 8 Shows a seventh embodiment of an adhesive label in cross-section; and Fig. 9 Shows an eighth embodiment of an adhesive label in cross-section.
Fig. 2 shows a diagrammatic cross-section through a first embodiment of an adhesive label 1 of the present invention. In the course of fabrication of the adhesive label 1, a cover foil 3 of stretched, shrinkable, transparent foil made from hard PVC (polyvinyl chloride), PP (polypropylene), OPP
(oriented polypropylene), PET (polyethylene terephthalate), PS
(poystyrene), PE (polyethylene), PC (polycarbonate), or polyamide with a thickness of 20 to 70 micrometers is directly imprinted on its bottom side with an imprint 5 visible from the outside. When a PET - or a PC - foil is used, thicknesses of 10 to 60 micrometers are preferred. Throughout the description and claims "bottom side" means the side of the cover foil 3 (or other layer) closer to and facing a surface of a battery on which label 1 is applied, top side means the side of the cover foil 3 opposite to the "bottom side" and "outside" means when the label 1 is viewed after attachment to -S-a battery.
When a PP-, OPP-, PS- or PE-foil is used as the foil 3, the cover foil 3, in view of the unpolarized properties of the foil material, is provided, prior to application of the imprint 5, with an adhesion imparting primer layer 3a of a thickness of approximately 2 micrometers as an imprint adherence improvement agent. The primer layer 3a increases the surface tension between the cover foil 3 and the imprint 5.
In order to make the imprint 5 adhere to the cover foil 3 in a satisfactory manner but without the use of the primer layer 3a, it is possible to polarize the cover foil 3 in a high frequency electrical field leading to the formation of carboxyl (corona treatment). The cover foil 3, the primer layer 3a and the imprint 5 are permanently resilient, so that the label 1 can be shrunk upon a battery, even if the label 1 is kept in storage for several months, without the imprint 5 detaching itself from the cover foil 3. The cover foil 3 is the only shrinkable plastic foil layer of the adhesive label 1. It can carry additional layers on its top and bottom sides.
The imprint 5 and those partial surfaces of the cover foil 3 not carrying the imprint 5 are covered by a metal layer 7, particularly aluminum, using a vapor deposition or a sputtering method. The metal layer 7 forms a background for the imprint 5 visible from the outside and is electrically insulated against the outside by the cover foil 3. A non-metallic layer 9 made from a plastic foil or paper is applied upon the bottom side of the metal layer 7. The metal layer 7 and the non-metallic layer 9 together form a carrier layer 11 of the label 1.
Alternatively, the metal layer 7 can be applied upon the non-metallic layer 9 separately from the cover foil 3, it may be vapor-deposited or sputtered thereon, and the carrier layer 11 resulting from these two partial layers 7, 9 is fastened, e.g.
by means of a primer layer, upon the imprinted bottom side of the cover foil 3, in particular by the application of heat.
The carrier layer 11 is provided with contact adhesive 13 on its bottom side, and thus the finished label 1 is placed upon an adhesion repellent, e.g. siliconized, carrier band or tape 15, from which it is later transferred to a battery body by a dispensing device, not shown.
Fig. 2 shows the imprint 5 only diagrammatically with intermediate spaces. In this, as in all subsequently described embodiments, the imprint 5 can, however, also be uninterrupted or continuous over the area concerned, multi-colored, multi-layered, on a combination of non-transparent printing colors and/or opaque printing colors. Special metal colors, also particles for an area wide vapor deposition brought into solution, can form continuous colored layers.
Fig. 1 shows digrammatically the application of the adhesive label 1 upon a cylindrical battery body 50 of a rechargeable or non-rechargeable dry cell or appliance battery. The adhesive label l is placed with its contact adhesive layer 13 upon the circumference of the battery body 50 in such a way that~its longitudinal edges 17, 17, not imprinted upon and having no carrier layer 11, protrude beyond the end-surfaces 51, 51 of the battery body 50. In particular, the stretching direction of cover foil 3 runs in the circumferential direction of the battery body 50. Then the adhesive label 1 is placed around the circumference of the battery body 50, so that the end regions 19, 19 of the adhesive label 1 overlap one another. Subsequently, the adhesive label is shrunk upon the battery body 50 by application of heat, so that the longitudinal edges 17, 17 rest upon the end surfaces 51, 51 of the battery body 50 and additionally adhere to the end faces 51, 51 due to the contact adhesive 13. .
Due to the overlapping end regions 19, 19 and the longitudinal edges 17, 17 resting upon the end surfaces 51, 51 of the battery body 50, the adhesive label 1 encapsulates the battery body 50 and provides, in addition to the electrical insulation of the cell, protection against leakage. The externally located cover layer 3 protects the layers located beneath it from damage, in particular during the fabrication process for the battery beginning with the application of the label 1 up to the packaging of the finished battery, and will also serve to resist mechanical stresses in the battery layers when in the appliance with which the battery used.
Fig. 3 shows a second embodiment of the adhesive label 1. It differs from the embodiment shown in Fig. 2 in that the carrier layer 11 is a single layer. If the carrier layer 11 is made from metal, e.g. aluminum, it can be vapor-deposited or sputtered upon the imprinted bottom side of the cover foil 3, e.g. at a thickness of 2 to 7~. Alternatively, the metal layer 11 can be applied to a carrier, not shown, separately from the cover foil 3, from which carrier it is then transferred by means of a thermo-sensitive intermediate layer upon the imprint 5. This carrier preferably is a foil acting as a manufacture dedicated item, which is pulled off after the transfer of the metal layer 11 and is subsequently rolled up, thus no longer participating in the buildup of the layers. The contact adhesive 13 is applied directly upon the metal layer 11. Here also, the cover foil 3 can, if necessary, be provided with the primer layer 3a or subjected to the high frequency electrical field treatment prior to the imprinting process.
Fig. 4 shows a third embodiment of the adhesive label 1 similar to the embodiment of Fig. 3 having a single layer carrier layer 11. The carrier layer 11 consists of paper or plastic and is placed upon the imprinted bottom side of the _g_ cover foil 3 by means of a laminating adhesive layer 21 located between the cover foil 3 (imprint 5) and layer 11. The laminating adhesive layer 21 is applied as a lacquer or glue in a liquid or semi-liquid phase and is cured or hardened by chemical reaction of its binder and hardener component parts, by irradiation and/or by evaporation of solvents. The laminating adhesive layer 21 can be pigmented in case of an imprint which is not continuous and can constitute an optical background for the imprint 5. The laminating adhesive layer 21 improves the adhesion of the carrier layer 11 upon the imprinted bottom side of the cover foil 3. The laminating adhesive layer 21 has a thickness of 3.5 to 5 micrometers corresponding to 2.5 to 4 grams per meter square and forms a barrier against diffusion of solvents from the contact adhesive layer 13 located beneath it into the imprint 5 and thereby prevents the imprint 5 from changing if it is kept in storage for a long time. The laminating adhesive layer 21 is an additional barrier against migration of electrolytes and improves at the same time the electrical insulation properties of the label, without having to use an additional insulation layer. In this case also, the cover foil 3 can, if needed, be provided with the primer layer 3a prior to imprinting or it can be subjected to the high frequency electrical treatment.
Fig. 5 shows a fourth embodiment of the adhesive label 1. As in the previous embodiments, the imprint 5 is directly provided on the bottom side of the cover foil 3. Differing from the above embodiments, however, no separate carrier layer 11 is used, rather, the contact adhesive layer 13 is directly applied upon the imprinted bottom side of the cover foil 3.
The cover foil 3 assumes here the sole carrier function for the adhesive label 1. The imprint 5 can be interrupted or continuous over the entire area of the bottom side of cover foil 3, so the surface of the battery body located beneath the label l is not visible: The imprint 5 improves the electrical insulation of the label 1 and prevents diffusion of solvents from the contact pressure layer 13 or electrolytes from electrolyte residues on the battery surface. The contact adhesive layer 13 can be colored and forms an optical background for an opaque imprint 5 which is not continuous.
Here also, the cover foil 3 can, if needed, be provided with the primer layer 3a prior to imprinting or can be subjected to a high frequency electrical field treatment.
Fig. 6 shows a fifth embodiment of the adhesive label 1 similar to that of Fig. 5, wherein the imprint 5 carries, however, a laminating adhesive layer 21 on its bottom side similar to the embodiment illustrated in Fig. 4. The laminating adhesive layer 21 is applied as a lacquer or glue in a liquid or a semi-liquid phase and hardens in a chemical reaction of binder-and-hardner components by irradiation and/or by evaporation of solvents. The laminating adhesive layer 21 can be pigmented where the imprint is not continuous over the whole surface area of cover foil 3 and can form an optical background for the imprint 5. Furthermore, the laminating adhesive layer 21 also fulfills the function of a barrier against diffusion of solvents from the contact adhesive layer 13, applied on the bottom side of the laminated adhesive layer 21, or electrolytes from the surface of the battery body into the imprint 5, and protects the imprint 5 from changes. This improves the durability of adhesion and the storage endurance of the label 1 even under unfavorable conditions, such as high temperature and humidity. Here also, the cover foil 3 can be provided with a primer layer 3a, if needed, prior to imprinting or can be subjected to a high frequency electrical field treatment.
Fig. 7 shows a sixth embodiment of the adhesive label 1. The cover foil 3, the primer layer 3a, if present with cover foil 3, and the imprint 5 correspond to the embodiment illustrated in Fig. 2. The laminating adhesive layer 21 corresponds to the embodiment illustrated in Fig. 4 and is applied upon the imprint 5 and the partial surfaces of the cover layer 3 devoid of the imprint 5.
The laminating adhesive layer 21 improves the adhesion of the metal layer 7, e.g. aluminum, placed under it, corresponding to the embodiment illustrated in Fig. 4. The metal layer 7 is sputtered or vapor-deposited at a thickness of 2 to 7~.
Because of the micropartial accumulation or superposition of metal particles, the metal layer 7 is porous and has a higher electrical resistance than a metal foil. The metal layer 7 also covers unavoidable contaminations or stains which may be on the battery body 50.
Alternatively, the metal layer 7 can be transferred as a foil to the laminating adhesive layer 21 by the transfer method.
That is, the metal foil 7 adhered to a carrier tape is placed upon the laminating adhesive layer 21. Then the carrier tape having a lower adhesion to the metal foil 7 than the laminating adhesive layer 21 has to the metal layer 7 is pulled off the metal layer 7.
The laminating adhesive layer 21 constitutes a resilient connection between the metal layer 7 and the cover foil 3.
This resilient connection prevents the metal layer 7 from being distorted during shrinkage of the foil 3 and in the course of labelling upon battery bodies of small radii. The resilient connection absorbs shearing forces and warping in the label 1. At the same time, the resilient connection forms the barrier previously described in connection with the embodiment of Fig. 4, which prevents solvents from contacting adhesive layer 13 and penetrating into the pores of the metal layer 7 and from diffusing into the imprint 5 and changing the imprint 5, as well as considerably improving the electrical insulation of the label 1. The laminating adhesive 21, which penetrates into the pores of the metal layer 7, hardens or cures in the metal layer 7.
The laminating adhesive layer 21 can be a lacquer which, after being applied in liquid or semi-liquid state, is hardened or cured by a chemical reaction of its binder and hardener component parts by irradiation and/or evaporaton of solvents.
Prior to sputtering or vapor depositing the metal layer 7, it is possible to permit the laminating adhesive 21 to cure or harden. In case of the superposition of the metal foil 7, e.g.
by the foil transfer method, it is possible to place the metal.
foil 7 on the not yet cured or hardened laminating adhesive layer 21, in order to utilize the adhering effect of the not yet cured lacquer. The laminating adhesive layer 21 may contain pigments for formation of an optical background for the imprint 5.
The contact adhesive layer 13 has, just as in the previous embodiments, a thickness of 10 to 25 micrometers and electrically insulates the metal layer 7 against the battery body 15. When using the laminating adhesive layer 21, the contact adhesive layer 13 can be thinner than 15 micrometers, since the laminating adhesive layer 21 also has insulating properties.
The contact adhesive 13, which penetrates into the pores of the metal layer 7, insulates the pores and thus increases the electrical resistance of the metal layer 7.
The adhesion of the individual label layers must be arranged in such a way in the overlapping regions 19, 19 (Fig. 1) of the adhesive label 1, that, with the adhesive label 1 placed upon the battery body 50, the stress in the shrunk cover foil 3 does not rip the laminating adhesive layer 21.
The laminating adhesive layer 21 is preferably a two-component adhesive or lacquer, including a binder and hardener; and the contact adhesive 13 represents, as a rule, a permanently resilient single component adhesive with stabilizers, such as antioxidants, which prevent hardening or curing and consequent spalling as a result of area rupture under the developed high shear force in the contact region. Thereby, the laminating adhesive layer 21 adheres in its hardened state more strongly than in its unhardened state and therefore also does the permanently resilient contact adhesive 13. The adherence effect of the contact adhesive 13 in the overlapping regions 19, 19 with the cover foil 3 is adapted to the adhesive effect to the battery body 50 between the overlapping regions 19, 19 in such a way that break away of the overlap 19 is prevented.
Figure 8 shows a seventh embodiment of the adhesive label 1, which differs from the embodiment illustrated in Figure 7 as far as the layer buildup between the imprint 5 and the metal layer 7 is concerned, otherwise, however, is identical to the embodiment shown in Figure 7 with all its variants.
The laminating adhesive layer 21 applied to the imprint 5, which may correspond in its component parts to the version illustrated in Figure 7, is resilient and forms a resilient connection between the cover foil 3 and the metal layer 7, so that the metal layer 7 is not damaged, e.g. the metal layer 7 may crumple or tear in the course of shrinking the cover foil 3 upon the battery body. This resilient connection absorbs shearing forces and warping in the label 1. The laminating adhesive layer 2l adheres more strongly to the metal layer 7 than the contact adhesive 13 does to the metal layer 7.
A lacquer layer 22 is applied on the bottom side of the laminating adhesive layer 21, which lacquer layer 22 is harder and/or more dense than the laminating adhesive layer 21 and which assumes the barrier function described in connection with the embodiment of Figure 7 against diffusion of solvents from the contact adhesive layer 13 or electrolytes from the battery surface into the imprint 5. It is easy to sputter or vapor-deposit metal upon the lacquer layer 22 because of its strength and the thus treated lacquer layer 22 prevents passage of solvents from the contact adhesive layer 13 and of electrolytes from the battery surface, which have already penetrated through the pores in the metal layer 7.
The laminating adhesive layer 21 and/or the lacquer layer 22 can be pigmented and can form an optical background for the imprint 5.
Figure 9 shows an eighth embodiment of the adhesive label 1 similar to those of Figures 7 and 8, however, with a modified laminating adhesive layer 21 which as far as its component parts are concerned can be configured to correspond to the embodiment shown in Figure 7. The laminating adhesive layer 21 is applied upon the imprint 5 in a liquid or semi-liquid state and is subsequently partially cured or hardened in such a way by curing or hardening of the binder and hardener parts thereof by radiation and/or evaporation of solvents, that a resilient partial layer 21a resting upon the imprint 5 and a harder partial layer 21b remote from the imprint 5 are formed, upon which subsequently the metal layer 7 can be very easily sputtered or vapor-deposited. The resilient partial layer 21a serves as a resilient connection between the cover foil 3 and the metal layer 7, with the effect of the laminating adhesive layer 21 in the embodiment shown in Figure 8, and the harder partial layer 21b forms the barrier layer, with the effect of the lacquer layer 22 in the embodiment shown in Figure 8, against diffusion of solvents from the contact adhesive layer 13 and of electrolytes from the battery surface through the pores in the metal layer 7 into the imprint 5.
A plurality of adhesive labels 1 may adhere detachably to the siliconized carrier band or tape 15.
Fig. 2 Shows a first embodiment of an adhesive label in cross-section;
Fig. 3 Shows a second embodiment of an adhesive label in cross-section;
Fig. 4 Shows a third embodiment of an adhesive label in cross-section;
Fig. 5 Shows a fourth embodiment of an adhesive label in cross-section;
Fig. 6 Shows a fifth embodiment of an adhesive label in cross-section;
Fig. 7 Shows a sixth embodiment of an adhesive label in cross-section;
Fig. 8 Shows a seventh embodiment of an adhesive label in cross-section; and Fig. 9 Shows an eighth embodiment of an adhesive label in cross-section.
Fig. 2 shows a diagrammatic cross-section through a first embodiment of an adhesive label 1 of the present invention. In the course of fabrication of the adhesive label 1, a cover foil 3 of stretched, shrinkable, transparent foil made from hard PVC (polyvinyl chloride), PP (polypropylene), OPP
(oriented polypropylene), PET (polyethylene terephthalate), PS
(poystyrene), PE (polyethylene), PC (polycarbonate), or polyamide with a thickness of 20 to 70 micrometers is directly imprinted on its bottom side with an imprint 5 visible from the outside. When a PET - or a PC - foil is used, thicknesses of 10 to 60 micrometers are preferred. Throughout the description and claims "bottom side" means the side of the cover foil 3 (or other layer) closer to and facing a surface of a battery on which label 1 is applied, top side means the side of the cover foil 3 opposite to the "bottom side" and "outside" means when the label 1 is viewed after attachment to -S-a battery.
When a PP-, OPP-, PS- or PE-foil is used as the foil 3, the cover foil 3, in view of the unpolarized properties of the foil material, is provided, prior to application of the imprint 5, with an adhesion imparting primer layer 3a of a thickness of approximately 2 micrometers as an imprint adherence improvement agent. The primer layer 3a increases the surface tension between the cover foil 3 and the imprint 5.
In order to make the imprint 5 adhere to the cover foil 3 in a satisfactory manner but without the use of the primer layer 3a, it is possible to polarize the cover foil 3 in a high frequency electrical field leading to the formation of carboxyl (corona treatment). The cover foil 3, the primer layer 3a and the imprint 5 are permanently resilient, so that the label 1 can be shrunk upon a battery, even if the label 1 is kept in storage for several months, without the imprint 5 detaching itself from the cover foil 3. The cover foil 3 is the only shrinkable plastic foil layer of the adhesive label 1. It can carry additional layers on its top and bottom sides.
The imprint 5 and those partial surfaces of the cover foil 3 not carrying the imprint 5 are covered by a metal layer 7, particularly aluminum, using a vapor deposition or a sputtering method. The metal layer 7 forms a background for the imprint 5 visible from the outside and is electrically insulated against the outside by the cover foil 3. A non-metallic layer 9 made from a plastic foil or paper is applied upon the bottom side of the metal layer 7. The metal layer 7 and the non-metallic layer 9 together form a carrier layer 11 of the label 1.
Alternatively, the metal layer 7 can be applied upon the non-metallic layer 9 separately from the cover foil 3, it may be vapor-deposited or sputtered thereon, and the carrier layer 11 resulting from these two partial layers 7, 9 is fastened, e.g.
by means of a primer layer, upon the imprinted bottom side of the cover foil 3, in particular by the application of heat.
The carrier layer 11 is provided with contact adhesive 13 on its bottom side, and thus the finished label 1 is placed upon an adhesion repellent, e.g. siliconized, carrier band or tape 15, from which it is later transferred to a battery body by a dispensing device, not shown.
Fig. 2 shows the imprint 5 only diagrammatically with intermediate spaces. In this, as in all subsequently described embodiments, the imprint 5 can, however, also be uninterrupted or continuous over the area concerned, multi-colored, multi-layered, on a combination of non-transparent printing colors and/or opaque printing colors. Special metal colors, also particles for an area wide vapor deposition brought into solution, can form continuous colored layers.
Fig. 1 shows digrammatically the application of the adhesive label 1 upon a cylindrical battery body 50 of a rechargeable or non-rechargeable dry cell or appliance battery. The adhesive label l is placed with its contact adhesive layer 13 upon the circumference of the battery body 50 in such a way that~its longitudinal edges 17, 17, not imprinted upon and having no carrier layer 11, protrude beyond the end-surfaces 51, 51 of the battery body 50. In particular, the stretching direction of cover foil 3 runs in the circumferential direction of the battery body 50. Then the adhesive label 1 is placed around the circumference of the battery body 50, so that the end regions 19, 19 of the adhesive label 1 overlap one another. Subsequently, the adhesive label is shrunk upon the battery body 50 by application of heat, so that the longitudinal edges 17, 17 rest upon the end surfaces 51, 51 of the battery body 50 and additionally adhere to the end faces 51, 51 due to the contact adhesive 13. .
Due to the overlapping end regions 19, 19 and the longitudinal edges 17, 17 resting upon the end surfaces 51, 51 of the battery body 50, the adhesive label 1 encapsulates the battery body 50 and provides, in addition to the electrical insulation of the cell, protection against leakage. The externally located cover layer 3 protects the layers located beneath it from damage, in particular during the fabrication process for the battery beginning with the application of the label 1 up to the packaging of the finished battery, and will also serve to resist mechanical stresses in the battery layers when in the appliance with which the battery used.
Fig. 3 shows a second embodiment of the adhesive label 1. It differs from the embodiment shown in Fig. 2 in that the carrier layer 11 is a single layer. If the carrier layer 11 is made from metal, e.g. aluminum, it can be vapor-deposited or sputtered upon the imprinted bottom side of the cover foil 3, e.g. at a thickness of 2 to 7~. Alternatively, the metal layer 11 can be applied to a carrier, not shown, separately from the cover foil 3, from which carrier it is then transferred by means of a thermo-sensitive intermediate layer upon the imprint 5. This carrier preferably is a foil acting as a manufacture dedicated item, which is pulled off after the transfer of the metal layer 11 and is subsequently rolled up, thus no longer participating in the buildup of the layers. The contact adhesive 13 is applied directly upon the metal layer 11. Here also, the cover foil 3 can, if necessary, be provided with the primer layer 3a or subjected to the high frequency electrical field treatment prior to the imprinting process.
Fig. 4 shows a third embodiment of the adhesive label 1 similar to the embodiment of Fig. 3 having a single layer carrier layer 11. The carrier layer 11 consists of paper or plastic and is placed upon the imprinted bottom side of the _g_ cover foil 3 by means of a laminating adhesive layer 21 located between the cover foil 3 (imprint 5) and layer 11. The laminating adhesive layer 21 is applied as a lacquer or glue in a liquid or semi-liquid phase and is cured or hardened by chemical reaction of its binder and hardener component parts, by irradiation and/or by evaporation of solvents. The laminating adhesive layer 21 can be pigmented in case of an imprint which is not continuous and can constitute an optical background for the imprint 5. The laminating adhesive layer 21 improves the adhesion of the carrier layer 11 upon the imprinted bottom side of the cover foil 3. The laminating adhesive layer 21 has a thickness of 3.5 to 5 micrometers corresponding to 2.5 to 4 grams per meter square and forms a barrier against diffusion of solvents from the contact adhesive layer 13 located beneath it into the imprint 5 and thereby prevents the imprint 5 from changing if it is kept in storage for a long time. The laminating adhesive layer 21 is an additional barrier against migration of electrolytes and improves at the same time the electrical insulation properties of the label, without having to use an additional insulation layer. In this case also, the cover foil 3 can, if needed, be provided with the primer layer 3a prior to imprinting or it can be subjected to the high frequency electrical treatment.
Fig. 5 shows a fourth embodiment of the adhesive label 1. As in the previous embodiments, the imprint 5 is directly provided on the bottom side of the cover foil 3. Differing from the above embodiments, however, no separate carrier layer 11 is used, rather, the contact adhesive layer 13 is directly applied upon the imprinted bottom side of the cover foil 3.
The cover foil 3 assumes here the sole carrier function for the adhesive label 1. The imprint 5 can be interrupted or continuous over the entire area of the bottom side of cover foil 3, so the surface of the battery body located beneath the label l is not visible: The imprint 5 improves the electrical insulation of the label 1 and prevents diffusion of solvents from the contact pressure layer 13 or electrolytes from electrolyte residues on the battery surface. The contact adhesive layer 13 can be colored and forms an optical background for an opaque imprint 5 which is not continuous.
Here also, the cover foil 3 can, if needed, be provided with the primer layer 3a prior to imprinting or can be subjected to a high frequency electrical field treatment.
Fig. 6 shows a fifth embodiment of the adhesive label 1 similar to that of Fig. 5, wherein the imprint 5 carries, however, a laminating adhesive layer 21 on its bottom side similar to the embodiment illustrated in Fig. 4. The laminating adhesive layer 21 is applied as a lacquer or glue in a liquid or a semi-liquid phase and hardens in a chemical reaction of binder-and-hardner components by irradiation and/or by evaporation of solvents. The laminating adhesive layer 21 can be pigmented where the imprint is not continuous over the whole surface area of cover foil 3 and can form an optical background for the imprint 5. Furthermore, the laminating adhesive layer 21 also fulfills the function of a barrier against diffusion of solvents from the contact adhesive layer 13, applied on the bottom side of the laminated adhesive layer 21, or electrolytes from the surface of the battery body into the imprint 5, and protects the imprint 5 from changes. This improves the durability of adhesion and the storage endurance of the label 1 even under unfavorable conditions, such as high temperature and humidity. Here also, the cover foil 3 can be provided with a primer layer 3a, if needed, prior to imprinting or can be subjected to a high frequency electrical field treatment.
Fig. 7 shows a sixth embodiment of the adhesive label 1. The cover foil 3, the primer layer 3a, if present with cover foil 3, and the imprint 5 correspond to the embodiment illustrated in Fig. 2. The laminating adhesive layer 21 corresponds to the embodiment illustrated in Fig. 4 and is applied upon the imprint 5 and the partial surfaces of the cover layer 3 devoid of the imprint 5.
The laminating adhesive layer 21 improves the adhesion of the metal layer 7, e.g. aluminum, placed under it, corresponding to the embodiment illustrated in Fig. 4. The metal layer 7 is sputtered or vapor-deposited at a thickness of 2 to 7~.
Because of the micropartial accumulation or superposition of metal particles, the metal layer 7 is porous and has a higher electrical resistance than a metal foil. The metal layer 7 also covers unavoidable contaminations or stains which may be on the battery body 50.
Alternatively, the metal layer 7 can be transferred as a foil to the laminating adhesive layer 21 by the transfer method.
That is, the metal foil 7 adhered to a carrier tape is placed upon the laminating adhesive layer 21. Then the carrier tape having a lower adhesion to the metal foil 7 than the laminating adhesive layer 21 has to the metal layer 7 is pulled off the metal layer 7.
The laminating adhesive layer 21 constitutes a resilient connection between the metal layer 7 and the cover foil 3.
This resilient connection prevents the metal layer 7 from being distorted during shrinkage of the foil 3 and in the course of labelling upon battery bodies of small radii. The resilient connection absorbs shearing forces and warping in the label 1. At the same time, the resilient connection forms the barrier previously described in connection with the embodiment of Fig. 4, which prevents solvents from contacting adhesive layer 13 and penetrating into the pores of the metal layer 7 and from diffusing into the imprint 5 and changing the imprint 5, as well as considerably improving the electrical insulation of the label 1. The laminating adhesive 21, which penetrates into the pores of the metal layer 7, hardens or cures in the metal layer 7.
The laminating adhesive layer 21 can be a lacquer which, after being applied in liquid or semi-liquid state, is hardened or cured by a chemical reaction of its binder and hardener component parts by irradiation and/or evaporaton of solvents.
Prior to sputtering or vapor depositing the metal layer 7, it is possible to permit the laminating adhesive 21 to cure or harden. In case of the superposition of the metal foil 7, e.g.
by the foil transfer method, it is possible to place the metal.
foil 7 on the not yet cured or hardened laminating adhesive layer 21, in order to utilize the adhering effect of the not yet cured lacquer. The laminating adhesive layer 21 may contain pigments for formation of an optical background for the imprint 5.
The contact adhesive layer 13 has, just as in the previous embodiments, a thickness of 10 to 25 micrometers and electrically insulates the metal layer 7 against the battery body 15. When using the laminating adhesive layer 21, the contact adhesive layer 13 can be thinner than 15 micrometers, since the laminating adhesive layer 21 also has insulating properties.
The contact adhesive 13, which penetrates into the pores of the metal layer 7, insulates the pores and thus increases the electrical resistance of the metal layer 7.
The adhesion of the individual label layers must be arranged in such a way in the overlapping regions 19, 19 (Fig. 1) of the adhesive label 1, that, with the adhesive label 1 placed upon the battery body 50, the stress in the shrunk cover foil 3 does not rip the laminating adhesive layer 21.
The laminating adhesive layer 21 is preferably a two-component adhesive or lacquer, including a binder and hardener; and the contact adhesive 13 represents, as a rule, a permanently resilient single component adhesive with stabilizers, such as antioxidants, which prevent hardening or curing and consequent spalling as a result of area rupture under the developed high shear force in the contact region. Thereby, the laminating adhesive layer 21 adheres in its hardened state more strongly than in its unhardened state and therefore also does the permanently resilient contact adhesive 13. The adherence effect of the contact adhesive 13 in the overlapping regions 19, 19 with the cover foil 3 is adapted to the adhesive effect to the battery body 50 between the overlapping regions 19, 19 in such a way that break away of the overlap 19 is prevented.
Figure 8 shows a seventh embodiment of the adhesive label 1, which differs from the embodiment illustrated in Figure 7 as far as the layer buildup between the imprint 5 and the metal layer 7 is concerned, otherwise, however, is identical to the embodiment shown in Figure 7 with all its variants.
The laminating adhesive layer 21 applied to the imprint 5, which may correspond in its component parts to the version illustrated in Figure 7, is resilient and forms a resilient connection between the cover foil 3 and the metal layer 7, so that the metal layer 7 is not damaged, e.g. the metal layer 7 may crumple or tear in the course of shrinking the cover foil 3 upon the battery body. This resilient connection absorbs shearing forces and warping in the label 1. The laminating adhesive layer 2l adheres more strongly to the metal layer 7 than the contact adhesive 13 does to the metal layer 7.
A lacquer layer 22 is applied on the bottom side of the laminating adhesive layer 21, which lacquer layer 22 is harder and/or more dense than the laminating adhesive layer 21 and which assumes the barrier function described in connection with the embodiment of Figure 7 against diffusion of solvents from the contact adhesive layer 13 or electrolytes from the battery surface into the imprint 5. It is easy to sputter or vapor-deposit metal upon the lacquer layer 22 because of its strength and the thus treated lacquer layer 22 prevents passage of solvents from the contact adhesive layer 13 and of electrolytes from the battery surface, which have already penetrated through the pores in the metal layer 7.
The laminating adhesive layer 21 and/or the lacquer layer 22 can be pigmented and can form an optical background for the imprint 5.
Figure 9 shows an eighth embodiment of the adhesive label 1 similar to those of Figures 7 and 8, however, with a modified laminating adhesive layer 21 which as far as its component parts are concerned can be configured to correspond to the embodiment shown in Figure 7. The laminating adhesive layer 21 is applied upon the imprint 5 in a liquid or semi-liquid state and is subsequently partially cured or hardened in such a way by curing or hardening of the binder and hardener parts thereof by radiation and/or evaporation of solvents, that a resilient partial layer 21a resting upon the imprint 5 and a harder partial layer 21b remote from the imprint 5 are formed, upon which subsequently the metal layer 7 can be very easily sputtered or vapor-deposited. The resilient partial layer 21a serves as a resilient connection between the cover foil 3 and the metal layer 7, with the effect of the laminating adhesive layer 21 in the embodiment shown in Figure 8, and the harder partial layer 21b forms the barrier layer, with the effect of the lacquer layer 22 in the embodiment shown in Figure 8, against diffusion of solvents from the contact adhesive layer 13 and of electrolytes from the battery surface through the pores in the metal layer 7 into the imprint 5.
A plurality of adhesive labels 1 may adhere detachably to the siliconized carrier band or tape 15.
Claims (21)
1. An adhesive label for application upon a circumferential surface of a dry cell battery, said label comprising:
a stretched, shrinkable, transparent cover foil constituting the sole foil layer of said adhesive label;
an imprint applied directly upon the bottom side of said cover foil and visible from the top side of said adhesive label;
a contact adhesive layer located beneath said imprint; and a barrier layer located between said imprint and said contact adhesive layer, wherein said barrier layer rests directly upon said imprint and upon any partial surfaces of said cover foil devoid of said imprint, and wherein said barrier layer is applied from a liquid or semi-liquid phase, said barrier layer forming a barrier against migration of solvent from said contact adhesive layer or of electrolyte present on said battery into said imprint;
wherein said adhesive label has, along a generatrix of said circumferential surface of said battery, first edge portions which can be superimposed in an overlapping manner, and second edge portions projecting beyond end surfaces of said battery and resting upon said end surfaces after shrinkage of said cover foil.
a stretched, shrinkable, transparent cover foil constituting the sole foil layer of said adhesive label;
an imprint applied directly upon the bottom side of said cover foil and visible from the top side of said adhesive label;
a contact adhesive layer located beneath said imprint; and a barrier layer located between said imprint and said contact adhesive layer, wherein said barrier layer rests directly upon said imprint and upon any partial surfaces of said cover foil devoid of said imprint, and wherein said barrier layer is applied from a liquid or semi-liquid phase, said barrier layer forming a barrier against migration of solvent from said contact adhesive layer or of electrolyte present on said battery into said imprint;
wherein said adhesive label has, along a generatrix of said circumferential surface of said battery, first edge portions which can be superimposed in an overlapping manner, and second edge portions projecting beyond end surfaces of said battery and resting upon said end surfaces after shrinkage of said cover foil.
2. The adhesive label according to claim 1, wherein said bottom side of said cover foil is pretreated in an adhesion-imparting manner or is provided with an adhesion-imparting primer layer.
3. The adhesive label according to claim 1 or 2, wherein said barrier layer carries directly on its bottom side said contact adhesive layer.
4. The adhesive label according to claim 1 or 2, wherein said barrier layer is a laminating adhesive layer and connects a metal layer to said imprint.
5. The adhesive label according to claim 4, wherein said laminating adhesive layer forms a resilient connection between said imprint and said metal layer.
6. The adhesive label according to claim 4, wherein said laminating adhesive layer adheres more strongly to said metal layer than said contact adhesive layer adheres to said metal layer.
7. An adhesive label for application upon a circumferential surface of a dry cell battery, said label comprising:
a stretched, shrinkable, transparent cover foil;
an imprint applied directly upon the bottom side of said cover foil and visible from the top side of said adhesive label;
a contact adhesive layer located beneath said imprint; and a flexible laminating adhesive layer which is applied upon said imprint and upon any partial surfaces of said cover foil devoid of said imprint and absorbs mechanical stresses in said adhesive label, and a harder lacquer layer lying upon said flexible laminating adhesive layer and constituting a barrier against migration of solvent from said contact adhesive layer or electrolyte present on said battery into said imprint;
wherein said adhesive label has, along a generatrix of said circumferential surface of said battery, first edge portions which can be superimposed in an overlapping manner, and second edge portions projecting beyond end surfaces of said battery and resting upon said end surfaces after shrinkage of said cover foil.
a stretched, shrinkable, transparent cover foil;
an imprint applied directly upon the bottom side of said cover foil and visible from the top side of said adhesive label;
a contact adhesive layer located beneath said imprint; and a flexible laminating adhesive layer which is applied upon said imprint and upon any partial surfaces of said cover foil devoid of said imprint and absorbs mechanical stresses in said adhesive label, and a harder lacquer layer lying upon said flexible laminating adhesive layer and constituting a barrier against migration of solvent from said contact adhesive layer or electrolyte present on said battery into said imprint;
wherein said adhesive label has, along a generatrix of said circumferential surface of said battery, first edge portions which can be superimposed in an overlapping manner, and second edge portions projecting beyond end surfaces of said battery and resting upon said end surfaces after shrinkage of said cover foil.
8. The adhesive label according to claim 7, wherein said bottom side of said cover foil is pretreated in an adhesion-imparting manner or is provided with an adhesion-imparting primer layer.
9. The adhesive label according to claim 8 or 9, wherein a metal layer is sputtered or vapor-deposited upon said lacquer layer.
10. The adhesive label according to claim 9, wherein said metal layer carries said contact adhesive layer on its bottom side.
11. The adhesive label according to claim 7 or 8, wherein said laminating adhesive layer and said lacquer layer are separately applied layers.
12. The adhesive label according to claim 7 or 8, wherein said laminating adhesive layer and said lacquer layer have identical ingredients.
13. The adhesive label according to claim 12, wherein said.
laminating adhesive layer and said lacquer layer are applied is a common layer upon said imprint, and, after said common layer has been applied, said common layer is hardened to a greater extent on its side remote from said imprint, to form said lacquer layer, than on its side constituting said laminating adhesive layer and resting upon said imprint.
laminating adhesive layer and said lacquer layer are applied is a common layer upon said imprint, and, after said common layer has been applied, said common layer is hardened to a greater extent on its side remote from said imprint, to form said lacquer layer, than on its side constituting said laminating adhesive layer and resting upon said imprint.
14. The adhesive label according to any one of claims 1 to 6, wherein said barrier layer is hardened by a chemical reaction, irradiation, evaporation of solvents or a combination thereof.
15. The adhesive label according to any one of claims 7 to 13, wherein said laminating adhesive layer is hardened by a chemical reaction, irradiation, evaporation of solvents or a combination thereof.
16. The adhesive label according to claim 14 or 15, wherein the chemical reaction comprises binder and hardener components.
17. The adhesive label according to any one of claims 1 to 16, wherein at least one layer visible from the top of said label through said imprint is colored or pigmented.
18. The adhesive label according to any one of claims 1 to 17, wherein said imprint is printed upon said cover foil in printing inks from an organic-solvent-based printing ink system or from a solvent-free photocatalytic printing ink system as a mirror image by reverse printing.
19. The adhesive label according to any one of claims 1 to 18, wherein said cover foil is formed from (a) oriented hard polyvinyl chloride, polypropylene, polystyrene or polyamide, or (b) polyethylene terephthalate or polycarbonate.
20. The adhesive label according to claim 19, wherein said cover foil has a thickness of 20 to 70 micrometers when formed from components (a) and a thickness of 10 to 60 micrometers when formed from components (b).
21. A dry cell battery having an adhesive label according to any one of claims 1 to 20.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29513170U DE29513170U1 (en) | 1995-08-16 | 1995-08-16 | Adhesive label |
DE29513170.5 | 1995-08-16 |
Publications (2)
Publication Number | Publication Date |
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CA2183593A1 CA2183593A1 (en) | 1997-02-17 |
CA2183593C true CA2183593C (en) | 2000-03-28 |
Family
ID=8011845
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002183593A Expired - Fee Related CA2183593C (en) | 1995-08-16 | 1996-08-15 | Adhesive label |
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US (1) | US6248427B1 (en) |
EP (2) | EP0762365B1 (en) |
JP (1) | JP2869963B2 (en) |
CN (1) | CN1107299C (en) |
AT (2) | ATE194246T1 (en) |
CA (1) | CA2183593C (en) |
DE (3) | DE29513170U1 (en) |
DK (2) | DK0947971T3 (en) |
EA (1) | EA000086B1 (en) |
HK (2) | HK1020634A1 (en) |
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- 1995-08-16 DE DE29513170U patent/DE29513170U1/en not_active Expired - Lifetime
-
1996
- 1996-08-09 US US08/694,572 patent/US6248427B1/en not_active Expired - Fee Related
- 1996-08-12 CN CN96111657A patent/CN1107299C/en not_active Expired - Fee Related
- 1996-08-14 EP EP96113097A patent/EP0762365B1/en not_active Expired - Lifetime
- 1996-08-14 DK DK99113150T patent/DK0947971T3/en active
- 1996-08-14 AT AT96113097T patent/ATE194246T1/en active
- 1996-08-14 DK DK96113097T patent/DK0762365T3/en active
- 1996-08-14 DE DE59605489T patent/DE59605489D1/en not_active Expired - Lifetime
- 1996-08-14 EP EP99113150A patent/EP0947971B1/en not_active Expired - Lifetime
- 1996-08-14 DE DE59609038T patent/DE59609038D1/en not_active Expired - Lifetime
- 1996-08-14 AT AT99113150T patent/ATE215721T1/en active
- 1996-08-15 EA EA199600054A patent/EA000086B1/en not_active IP Right Cessation
- 1996-08-15 CA CA002183593A patent/CA2183593C/en not_active Expired - Fee Related
- 1996-08-16 JP JP8233677A patent/JP2869963B2/en not_active Expired - Fee Related
-
1998
- 1998-08-13 HK HK99105125A patent/HK1020634A1/en not_active IP Right Cessation
- 1998-08-13 HK HK98109901A patent/HK1009302A1/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE59605489D1 (en) | 2000-08-03 |
HK1020634A1 (en) | 2000-05-12 |
JPH10301496A (en) | 1998-11-13 |
EP0947971B1 (en) | 2002-04-03 |
EA199600054A1 (en) | 1997-03-31 |
DK0762365T3 (en) | 2000-10-30 |
CA2183593A1 (en) | 1997-02-17 |
JP2869963B2 (en) | 1999-03-10 |
HK1009302A1 (en) | 1999-05-28 |
US6248427B1 (en) | 2001-06-19 |
CN1151059A (en) | 1997-06-04 |
EP0947971A3 (en) | 1999-11-10 |
EP0762365B1 (en) | 2000-06-28 |
DE59609038D1 (en) | 2002-05-08 |
ATE215721T1 (en) | 2002-04-15 |
EP0762365A1 (en) | 1997-03-12 |
ATE194246T1 (en) | 2000-07-15 |
EA000086B1 (en) | 1998-06-25 |
DK0947971T3 (en) | 2002-07-08 |
CN1107299C (en) | 2003-04-30 |
DE29513170U1 (en) | 1997-01-02 |
EP0947971A2 (en) | 1999-10-06 |
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