EP0491099A1 - Tamper evident closure and tamper evident method - Google Patents
Tamper evident closure and tamper evident method Download PDFInfo
- Publication number
- EP0491099A1 EP0491099A1 EP90313896A EP90313896A EP0491099A1 EP 0491099 A1 EP0491099 A1 EP 0491099A1 EP 90313896 A EP90313896 A EP 90313896A EP 90313896 A EP90313896 A EP 90313896A EP 0491099 A1 EP0491099 A1 EP 0491099A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- backing
- adhesive layer
- closure
- tape
- 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.)
- Granted
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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
- G09F3/02—Forms or constructions
- G09F3/0291—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time
- G09F3/0292—Labels or tickets undergoing a change under particular conditions, e.g. heat, radiation, passage of time tamper indicating labels
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Bag Frames (AREA)
- Adhesive Tapes (AREA)
Abstract
- (1) a discontinuous layer (14) of a barrier material preventing adhesion of the underlying layer (16) to the backing (12);
- (2) a coloured laminating adhesive layer (16) having a greater affinity to the backing (12) than to any other layer in the tape; and
- (3) an adhesive layer (18) for aggressively securing the tape to the bag pouch or other substrate to which evidence of tampering is desired, which tape is tamper-evident over a wide temperature range.
Description
- The present invention relates to flexible tamper-evident tapes wherein the evidence of tampering is either a transfer of a pattern to the tampered product, revelation of a pattern on the backing of the closure, or tearing of the closure and/or the product over a wide temperature range including temperatures on the order of -320oF (-195oC) where other so-called tamper-evident seals do not exhibit tampering when removed and replaced later.
- Tamper proofing has been of concern throughout the ages in the financial and security sectors. However recently it has taken on new significance due to tampering with food, cosmetic and pharmaceutical
- products. The following patents are illustrative of the prior art, yet are by no means intended as a complete survey of the prior art.
- The earliest patent, U.S. Patent No. 2,845,728 issued to Huber, discloses a self-destroying label having pressure sensitive adhesive on one surface thereof. The principal object of this invention provided for a pressure sensitive label readily applicable to items of various kinds. Yet, when an attempt is made to remove such labels from the article, the label is damaged or disintegrates to a sufficient extent so that the condition of the label, if removed from one article and applied to another, readily and visibly will serve to indicate that the label has been tampered with. Essentially, the invention consists of weakening means comprising either interrupted rows of incisions or substantially continuous partial incisions.
- U.S. Patent No. 3,383,121 discloses a self-adhesive copy label comprising a laminate construction consisting of a first layer such as a sheet of paper, a second pressure sensitive adhesive layer, preferentially adhered to the first layer so that it separates with the first layer when the first and third layers are separated, and a third layer consisting of a sheet of material constructed to be impact sensitive in that it carries, in normally separate states, chemicals which intermix upon impact to produce a color change in the impact area in or on the third layer itself. Thus the tamper evidence here is a color change.
- U.S. Patent No. 4,082,873 issued to Williams discloses a "laminate comprising a transparent or translucent outer sheet having an information-containing pattern printed on its inner surface, the printed inner surface having a coating of pressure sensitive adhesive film coated thereon. The affinity of the adhesive for the surface to which the laminated label is adhered and to the printed pattern is greater than the affinity of the printed pattern for the outer sheet. Once applied to a substrate, if removal of the label is attempted, the label delaminates in a manner such that the outer sheet separates leaving at least a portion of the adhesive layer, having at least a portion of the printed Pattern adhering thereto, adhered to the substrate."
- U.S. Patent No. 4,121,003 issued to Williams modifies Patent No. 4,082,873, by providing that at least a portion of the information-containing pattern be printed with an ink which is not dried into an integral film form so as to form a disruptable pattern when tampered with. Thus when the top sheet is delaminated from the adhesive, a portion of the pigmentation in the disruptable pattern adheres to both the top sheet as well as the adhesive layer, resulting in a "diminution of interruption of the coloration of the disruptable pattern on the top sheet sufficient to give visual indication of tampering."
- U.S. Patent No. 4,184,701 issued to Franklin et al discloses a label comprising "a laminate comprising a transparent or translucent outer sheet having an information containing pattern printed on its inner surface, said printed film having a discontinuous coating of transparent plasticized organic polymeric material thereon, with said printed and coated surface having a coating of a color containing pressure sensitive adhesive film thereon." Upon removal the label delaminates such that at least portions of the colored adhesive in register with the transparent discontinuous plasticized polymer coating remain on the substrate to which the label is adhered. Thus the evidence of tampering is a visual change in at least portions of background color.
- U.S. Patent No. 4,608,288 issued to Spindler discloses a label comprising a cover foil with an adhesive layer laminated onto a base foil. The cover foil is made of a material which is irreversibly deformable or easily breakable upon tampering. Moreover, the cover foil extends beyond the periphery of the base foil, thereby creating a safety rim which makes access to the base foil difficult.
- U.S. Patent No. 4,652,473 issued to Han discloses a tape comprising a backing having an outer and inner layer, the outer layer having sufficiently high tensile strength to maintain its integrity when removed. In contrast, the inner layer is thin and deformable. Thus, evidence of tampering is present by way of delamination. Upon removal of the outer layer, it delaminates from the inner layer which in turn generally causes a partial stretching out of the thin inner layer. Moreover, the patentee suggests using printed or colored layers for additional evidence.
- U.S. Patent No. 4,721,638, 4,746,556 and 4,763,931 all issued to Matsuguchi et al disclose a multilayered adhesive material comprising various separation forces so that when particular layers are separated they cannot readhere or cannot readhere as in the original state.
- The primary disadvantage of the prior art, as illustrated by the aforementioned patents, is evident at low temperature. At low temperatures, such as liquid nitrogen for example, the adhesive layers delaminate from the backing, thereby allowing for replacement without any evidence of tampering. Notably, while this delamination does occur in the three patents issued to Matsuguchi et al, lettering becomes evident when the material is replaced. However, these tapes comprise multiple layers and thus are quite costly.
- The present invention obviates the disadvantages of the prior art in an elegant and novel manner by providing for a tamper evident closure at all temperatures.
- In accordance with this invention, the aforementioned disadvantages are obviated by providing a tamper-evident tape comprising a transparent backing carrying in order,
- (1) a discontinuous layer of a barrier material preventing adhesion of the underlying layer to the backing;
- (2) a coloured laminating adhesive layer having a greater affinity to the backing than to any other layer in the tape; and
- (3) an adhesive layer for aggressively securing the tape to the bag pouch or other substrate to which evidence of tampering is desired, which tape is tamper-evident over a wide temperature range.
- The invention may be put into practice in various ways and one specific embodiment will be described by way of example with reference to the accompanying drawing which is a diagrammatic cross-sectional view of the novel tamper-evident tape of this invention.
- As heretofore mentioned, the present invention is directed to a novel tamper-evident tape for applying over the flap or other opening in pouches, bags, envelopes or other containers for currency, security documents and the like, which tape will exhibit evidence of tampering if the tape is removed to gain access to the contents and then replaced. The tape will provide evidence of tampering over a wide temperature range from above to below the Tg (glass transition temperature) of the adhesive layer adhering the tape to the substrate to be protected.
- The invention will best be understood by reference to the accompanying drawings.
- As shown therein, the novel tamper-evident closure of this invention 10 will comprise a
transparent backing 12 carrying, in order, a discontinuous layer of abarrier material 14; a coloured laminatingadhesive layer 16; and anadhesive layer 18, preferably a pressure-sensitive adhesive, which bonds aggressively to the bag, pouch, envelope or other substrate. While not essential to the practice of the invention, a per se knownrelease sheet 20 is preferably provided to protect the adhesive surface from premature contact. -
Backing layer 12 may comprise any of the per se known transparent and flexible backing or support sheets, e.g. a polyester such as polyethylene terephthalate, a polyolefin such as polyethylene or polypropylene, polycarbonate, a cellulosic ester such as cellulose acetate or triacetate, etc., including copolymers or blends thereof. It may be on the order of from about 0.5 to about 3.0 mils (0.013 mm to 0.075 mm) thick, 1.0 mil (0.025 mm) being preferred. - The
barrier material 14, which is preferably applied in a pattern but which may be randomly adhered to the backing, may comprise any material which does bond aggressively to thebacking 12. Examples of such materials include silicone, fluorocarbons, Quilon (trademark of DuPont), polyoctadecyl carbonate, etc., silicone being preferred. The function of thebarrier material 14 is to preclude or reduce the adherence of the underlying coloured laminatingadhesive layer 16 to thebacking 12 in the areas where it is deposited. Thebarrier material 14 is preferably transparent or translucent so that the underlyingcoloured layer 16 may be seen therethrough when viewed through thetransparent backing 12. The barrier material deposits may, for example, be on the order of about 1.0 micron thick. They may be provided on the inner surface of thebacking 12 by per se known techniques such as gravure or flexible printing, spray coating, chemical etching and the like. - The laminating
adhesive layer 16 has a greater affinity for thebacking 12 than for theadhesive layer 18. Accordingly, when an effort is made to strip the tape from the substrate, thelayer 16 tends to stay with thebacking 12. - The
layer 16, which contains a colour-providing material, e.g. a non-migrating dye or a pigment, may comprise any of the known laminating adhesives. For instance, if thebacking 12 comprises polyester, thecoloured layer 16 may comprise any of the commercially available polyester laminating adhesives in which the colour-providing material has been incorporated. - The thickness of the
coloured layer 16 may be on the order of from about 0.1 to about 0.4 mil or 0.5 mil (.0025 to 0.01 mm or 0.013 mm), a preferred thickness being about 0.2 mil (0.0051 mm). - The
adhesive layer 18 used to laminate the tape to the substrate, which is to be sealed, may comprise an acrylic pressure sensitive adhesive formulation which adheres aggressively to the substrate. To increase flow and adhesion to the substrate, the adhesive preferably includes an adhesion promoter such as an unsaturated higher fatty acid having at least 12 carbon atoms, oleic acid being illustrative. Tackifiers and/or plasticizers may also be incorporated in the acrylic adhesive to increase adhesion. - In any event, it is critical to the practice of this invention, as will be explained in detail hereinafter, that while the adhesive 18 must adhere aggressively to the substrate, the bond or affinity between the
layer 18 and the overlyingcoloured layer 16 must not be as great as the affinity of thelayer 16 to thebacking 12. - In optional embodiments, the
layer 18 may further contain a non-migratory colour-providing material contrasting with the colour-providing material in theoverlying layer 16. It may also contain a chemical reagent which, through contact with the skin of someone trying to remove the tape, produces a traceable reaction product in the skin and/or on thelayer 18 itself, or on the pouch with which it is used. - In use, the tape will of course be applied over the mouth or other opening in the container or other substrate to be sealed. When the tape is removed at a temperature above the Tg value of the
layer 18, e.g. at ambient temperatures, so as to tamper with the contents, in areas where no barrier material is present, thecoloured layer 16 will remain with the backing, as heretofore alluded to. However, in areas where thebarrier material 14 is present so as to preclude adhesion of thecoloured layer 16 to the backing, the coloured layer will be stripped away from the barrier, adhering to theadhesive layer 18 which remains aggressively bonded to the substrate. This will in turn provide a coloured pattern on the substrate in terms of adhered colourant from thelayer 16 and a reverse contrast image visible through the stripped-off backing in terms of the remaining coloured layer and areas where there is no colourant visible through the backing. Even when an attempt is made to re-apply the tape precisely to the substrate, evidence of its removal will still be readily visible to the eye, due to distortion of the adhesive. - When the tape is removed at a temperature below the Tg value of the adhesive, e.g. by first spraying with liquid nitrogen, and then removing the tape, visual evidence of the tampering will also be exhibited in one or more of the following ways.
- First, when the tape is removed from the substrate, the
adhesive layer 18 will delaminate from thecoloured layer 16 except wherebarrier layer 14 is present. At these areas, thecoloured layer 16 will break from thebarrier layer 14 and transfer with theadhesive layer 18. - A second possible evidence of tampering, is that the backing is liable to tear, leaving an image on the substrate along with the evidence of tearing of the backing.
- A third evidence which may occur is a noticeable wrinkling or distortion of the substrate.
- The invention also extends to a tamper evident method for securing a bag pouch from tampering comprising the steps of:
- (a) attaching a closure in accordance with the invention along either side of the opening of the said pouch,
- (b) closing the said pouch by bringing both sides in juxtaposition and adhering one side to the other by means of the said closure.
- The invention also extends to a bag pouch comprising a tamper evident closure in accordance with the present invention.
- The following examples show by way of illustration and not limitation the novel characteristics of the present invention.
EXAMPLE 1 Layer Ingredient Thickness Layer 1 Mylar* (polyester film) 1 mil (0.025 mm) Layer 2 Silicone <1 u (micron) Layer 3 Polyester Laminating Adhesive 0.4-0.5 mil) (0.01 to 0.013 mm) 10% Blue Pigment Layer 4 Ethylacetate Based Acrylic Adhesive 0.1-0.4 mil (0.0025 to 0.01 mm) 5% Oleic Acid Layer 5 Kraft Release Liner 4 mils (0.10 mm) * Trademark of DuPont - Mylar film was flexible Printed with a silicone layer. The printed side was then overcoated with the laminating layer which was in turn overcoated with the adhesive layer. Lastly, a Kraft release liner was applied to the adhesive side of the aforementioned film.
- In each of Examples 1 and 2 the silicone layer was discontinuous as shown diagrammatically in the drawing.
- By way of recapitulation, the present invention offers a tamper evident closure over a temperature banging from +150oF to -320oF (+66oC to -195oC). Among the many tamper evident mechanisms are: transfer of a coloured pattern to the substrate, revealing of a printed pattern on the backing, tearing of the backing, colour change, wrinkling of the substrate, finger prints as well as transfer of colour to the person doing the tampering.
Claims (10)
- A tamper-evident closure comprising a transparent backing carrying in order,(1) a discontinuous layer of a barrier material preventing adhesion of the underlying layer to the backing;(2) a coloured laminating adhesive layer having a greater affinity to the backing than to any other layer in the tape; and(3) an adhesive layer for aggressively securing the tape to the bag pouch or other substrate.
- A tamper-evident closure comprising a transparent backing carrying in order,(1) a discontinuous layer of a barrier material preventing adhesion of the underlying layer to the backing;(2) a coloured laminating adhesive layer having a greater affinity to the backing than to any other layer in the tape; and(3) an adhesive layer for aggressively securing the tape to the bag pouch or other substrate to which evidence of tampering is desired, which tape is tamper-evident over a wide temperature range.
- A closure comprising a transparent backing layer which has surface adhesion properties which vary from location to location, a first adhesive layer, the adhesion of which to the backing layer varies from location to location from a first value to lower values and a second adhesive layer for attaching the first adhesive layer and the backing layer to a substrate, the first value of adhesion of the first adhesive layer to the backing being greater than the value of the adhesion of the second adhesive layer to the first adhesive layer, the arrangement being such that an attempted removal of the closure from a substrate will result in a visually detectable change in appearance.
- A closure as claimed in Claim 3 in which the surface adhesion properties of the backing layer are varied by chemical etching.
- A closure as claimed in Claim 3 in which the surface adhesion properties of the backing layer are varied by depositing a material having reduced adhesion properties discontinuously on the backing layer.
- A closure as claimed in Claim 5 in which the material is a silicone.
- A closure as claimed in any one of Claims 3 to 6 in which the first adhesive layer is of a different colour to the second adhesive layer.
- A closure as claimed in any one of Claims 3 to 7 in which the second adhesive layer contains an ingredient which gives a colour reaction with skin.
- A closure as claimed in any one of Claims 3 to 3 in which the backing layer is of polyester, polyolefin, polycarbonate or a cellulosic ester or copolymers or blends thereof, the barrier material is a silicone, a fluorocarbon, or polyoctadecyl carbonate as discrete deposits, the first adhesive layer is a polyester adhesive and the second adhesive layer is an acrylic pressure sensitive adhesive.
- A closure as claimed in any one of Claims 3 to 9 in which the backing layer is 0.5 to 3 mils (0.013 to 0.075 mm) thick, the deposits of barrier material are up to about 1 micron thick, the first adhesive layer is 0.1 to 0.5 mil (0.0025 to 0.013 mm) thick and the second adhesive layer is 0.1 to 0.4 mil (0.0025 to 0.01 mm) thick.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1990628309 DE69028309T2 (en) | 1990-12-19 | 1990-12-19 | Safety lock and method of using the same |
EP19900313896 EP0491099B1 (en) | 1990-12-19 | 1990-12-19 | Tamper evident closure and tamper evident method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19900313896 EP0491099B1 (en) | 1990-12-19 | 1990-12-19 | Tamper evident closure and tamper evident method |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0491099A1 true EP0491099A1 (en) | 1992-06-24 |
EP0491099B1 EP0491099B1 (en) | 1996-08-28 |
Family
ID=8205658
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19900313896 Expired - Lifetime EP0491099B1 (en) | 1990-12-19 | 1990-12-19 | Tamper evident closure and tamper evident method |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0491099B1 (en) |
DE (1) | DE69028309T2 (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0651365A1 (en) * | 1993-11-02 | 1995-05-03 | Minnesota Mining And Manufacturing Company | Tamper-indicating label |
EP0657859A1 (en) * | 1993-12-06 | 1995-06-14 | The Kendall Company | Tamper-evident tape |
US5510171A (en) * | 1995-01-19 | 1996-04-23 | Minnesota Mining And Manufacturing Company | Durable security laminate with hologram |
EP0755776A1 (en) * | 1995-07-28 | 1997-01-29 | Minnesota Mining and Manufacturing Company | Multilayer film |
US5683774A (en) * | 1994-12-09 | 1997-11-04 | Minnesota Mining And Manufacturing Company | Durable, tamper resistant security laminate |
WO1999058619A1 (en) * | 1998-05-08 | 1999-11-18 | Decker Tape Products Co., Inc. | Self-adhesive resealable tamper-evident tape |
EP1113058A2 (en) * | 1999-12-29 | 2001-07-04 | Beiersdorf AG | Tamper-evident packaging tape |
DE10022002A1 (en) * | 1999-12-29 | 2001-07-12 | Beiersdorf Ag | Security tape for proof of unauthorized opening of packaging |
DE10140491A1 (en) * | 2001-05-28 | 2002-12-05 | Tesa Ag | A multi-layer safety label with a carrier based on a thermoplastic film printed on both sides, a contact adhesive layer, and a separation paper layer useful in packaging technology as a safety label on cardboard and paper |
DE19963709A1 (en) * | 1999-12-29 | 2002-12-05 | Tesa Ag | Security adhesive tape to prove unauthorized opening of a packaging |
EP1296306A2 (en) | 2001-09-19 | 2003-03-26 | Tesa AG | Use of a security adhesive band to show the unauthorized opening of a shipping package |
DE10209542A1 (en) * | 2002-03-04 | 2003-09-25 | Tesa Ag | Package is sealed by two strips coated on both sides with adhesive, strength of strips being less than strength of adhesive bond formed between them, so that they can be torn to open package |
US7060353B2 (en) | 2000-06-21 | 2006-06-13 | Tesa Ag | Adhesive security tape for detecting unauthorized broaching of a package |
FR2880837A1 (en) * | 2005-01-20 | 2006-07-21 | Gen Etiq Sarl | MULTILAYER PLATE FOR THE FORMATION OF SELF-ADHESIVE LABELS, METHOD OF MANUFACTURING SUCH PLATE AND LABEL COMPRISING THE MULTILAYER PLATE |
EP1712603A1 (en) * | 2000-04-24 | 2006-10-18 | Avery Dennison Corporation | Adhesive articles with improved air egress and methods of making the same |
US7135212B2 (en) | 2000-06-21 | 2006-11-14 | Tesa Aktiengesellschaft | Adhesive security tape that allows to detect unauthorized broaching of a package |
FR2898208A1 (en) * | 2006-03-02 | 2007-09-07 | Novatec Sa | Bottle e.g. white wine bottle, container e.g. cheese container, package e.g. blister type package, or object traceability providing method for e.g. wine field, involves using two types of secured labels in upstream and downstream cycles |
EP1892689A1 (en) * | 2006-08-21 | 2008-02-27 | 3M Innovative Properties Company | Decorative and/or information containing label comprising emblems and method of manufacturing it |
EP2392627A2 (en) | 2010-06-04 | 2011-12-07 | Avon Adhesive Products Limited | Security films and manufacture thereof |
US8252407B2 (en) | 2005-01-12 | 2012-08-28 | Avery Dennison Corporation | Adhesive article having improved application properties |
GB2520992A (en) * | 2013-12-06 | 2015-06-10 | Essentra Packaging & Security Ltd | Opening label |
US9240131B2 (en) | 2007-06-04 | 2016-01-19 | Avery Dennison Corporation | Adhesive articles having repositionability or slidability characteristics |
RU2574781C2 (en) * | 2014-06-20 | 2016-02-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный университет технологии и дизайна" | Marking element |
GB2537050A (en) * | 2015-03-31 | 2016-10-05 | Seal King Ind Co Ltd | Unsealing indication structure of counterfeit tape |
CN114173843A (en) * | 2019-08-02 | 2022-03-11 | 3M创新有限公司 | Tamper-evident closure |
WO2023126839A1 (en) * | 2021-12-27 | 2023-07-06 | 3M Innovative Properties Company | Sealing film with perimeter edge weakness for tamper evident protection |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6270256B1 (en) | 1997-04-07 | 2001-08-07 | Sealed Air Corporation | Tamper evident bag |
US20010052384A1 (en) | 2000-04-24 | 2001-12-20 | Michael Hannington | Adhesive articles with improved air egress and methods of making the same |
AUPS282902A0 (en) * | 2002-06-07 | 2002-06-27 | Pak Technologies Group Pty Ltd | Flexible pouch, filling and heat sealing line for flexible pouches, and containers for supporting and moving the flexible pouches |
AT10078U1 (en) | 2007-04-02 | 2008-08-15 | Securikett Ulrich & Horn Gmbh | SEALING FILM |
Citations (3)
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US4180929A (en) * | 1978-01-23 | 1980-01-01 | Minnesota Mining And Manufacturing Company | Tamper indicating label |
US4184701A (en) * | 1978-02-10 | 1980-01-22 | Monarch Marking Systems, Inc. | Tamper proof label |
FR2570986A1 (en) * | 1984-10-01 | 1986-04-04 | Daimatsu Kagaku Kogyo Kk | ADHESIVE ARTICLE THAT CAN NOT BE FIXED AGAIN BY ADHERENCE |
-
1990
- 1990-12-19 DE DE1990628309 patent/DE69028309T2/en not_active Expired - Fee Related
- 1990-12-19 EP EP19900313896 patent/EP0491099B1/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4180929A (en) * | 1978-01-23 | 1980-01-01 | Minnesota Mining And Manufacturing Company | Tamper indicating label |
US4184701A (en) * | 1978-02-10 | 1980-01-22 | Monarch Marking Systems, Inc. | Tamper proof label |
FR2570986A1 (en) * | 1984-10-01 | 1986-04-04 | Daimatsu Kagaku Kogyo Kk | ADHESIVE ARTICLE THAT CAN NOT BE FIXED AGAIN BY ADHERENCE |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5770283A (en) * | 1993-11-02 | 1998-06-23 | Minnesota Mining And Manufacturing Company | Tamper-indicating label |
EP0651365A1 (en) * | 1993-11-02 | 1995-05-03 | Minnesota Mining And Manufacturing Company | Tamper-indicating label |
EP0657859A1 (en) * | 1993-12-06 | 1995-06-14 | The Kendall Company | Tamper-evident tape |
US6284337B1 (en) | 1994-12-09 | 2001-09-04 | 3M Innovative Properties Company | Durable security laminate with heat-shrinkable layer |
US5683774A (en) * | 1994-12-09 | 1997-11-04 | Minnesota Mining And Manufacturing Company | Durable, tamper resistant security laminate |
US5510171A (en) * | 1995-01-19 | 1996-04-23 | Minnesota Mining And Manufacturing Company | Durable security laminate with hologram |
US5658411A (en) * | 1995-01-19 | 1997-08-19 | Minnesota Mining And Manufacturing Company | Durable security laminate with hologram |
EP0755776A1 (en) * | 1995-07-28 | 1997-01-29 | Minnesota Mining and Manufacturing Company | Multilayer film |
WO1999058619A1 (en) * | 1998-05-08 | 1999-11-18 | Decker Tape Products Co., Inc. | Self-adhesive resealable tamper-evident tape |
US6544615B2 (en) | 1999-12-29 | 2003-04-08 | Tesa Ag | Adhesive security tape for detecting unauthorized broaching of a package |
EP1113058A2 (en) * | 1999-12-29 | 2001-07-04 | Beiersdorf AG | Tamper-evident packaging tape |
EP1113058A3 (en) * | 1999-12-29 | 2001-10-17 | Beiersdorf AG | Tamper-evident packaging tape |
DE10022002A1 (en) * | 1999-12-29 | 2001-07-12 | Beiersdorf Ag | Security tape for proof of unauthorized opening of packaging |
DE19963709A1 (en) * | 1999-12-29 | 2002-12-05 | Tesa Ag | Security adhesive tape to prove unauthorized opening of a packaging |
US6537634B2 (en) | 1999-12-29 | 2003-03-25 | Tesa Ag | Adhesive security tape for detecting unauthorized broaching of a package |
EP1712603A1 (en) * | 2000-04-24 | 2006-10-18 | Avery Dennison Corporation | Adhesive articles with improved air egress and methods of making the same |
US7135212B2 (en) | 2000-06-21 | 2006-11-14 | Tesa Aktiengesellschaft | Adhesive security tape that allows to detect unauthorized broaching of a package |
US7060353B2 (en) | 2000-06-21 | 2006-06-13 | Tesa Ag | Adhesive security tape for detecting unauthorized broaching of a package |
DE10140491A1 (en) * | 2001-05-28 | 2002-12-05 | Tesa Ag | A multi-layer safety label with a carrier based on a thermoplastic film printed on both sides, a contact adhesive layer, and a separation paper layer useful in packaging technology as a safety label on cardboard and paper |
EP1296306A2 (en) | 2001-09-19 | 2003-03-26 | Tesa AG | Use of a security adhesive band to show the unauthorized opening of a shipping package |
DE10209542A1 (en) * | 2002-03-04 | 2003-09-25 | Tesa Ag | Package is sealed by two strips coated on both sides with adhesive, strength of strips being less than strength of adhesive bond formed between them, so that they can be torn to open package |
US8252407B2 (en) | 2005-01-12 | 2012-08-28 | Avery Dennison Corporation | Adhesive article having improved application properties |
FR2880837A1 (en) * | 2005-01-20 | 2006-07-21 | Gen Etiq Sarl | MULTILAYER PLATE FOR THE FORMATION OF SELF-ADHESIVE LABELS, METHOD OF MANUFACTURING SUCH PLATE AND LABEL COMPRISING THE MULTILAYER PLATE |
WO2006077293A1 (en) * | 2005-01-20 | 2006-07-27 | Gen'etiq (Sarl) | Multilayer plate for producing self-adhesive labels, method for the production of one such plate, and label comprising the same |
FR2898208A1 (en) * | 2006-03-02 | 2007-09-07 | Novatec Sa | Bottle e.g. white wine bottle, container e.g. cheese container, package e.g. blister type package, or object traceability providing method for e.g. wine field, involves using two types of secured labels in upstream and downstream cycles |
EP2059388A1 (en) * | 2006-08-21 | 2009-05-20 | 3M Innovative Properties Company | Decorative and/or information containing label comprising emblems and method of manufacturing it |
EP2059388A4 (en) * | 2006-08-21 | 2010-12-29 | 3M Innovative Properties Co | Decorative and/or information containing label comprising emblems and method of manufacturing it |
EP1892689A1 (en) * | 2006-08-21 | 2008-02-27 | 3M Innovative Properties Company | Decorative and/or information containing label comprising emblems and method of manufacturing it |
US9240131B2 (en) | 2007-06-04 | 2016-01-19 | Avery Dennison Corporation | Adhesive articles having repositionability or slidability characteristics |
EP2392627A2 (en) | 2010-06-04 | 2011-12-07 | Avon Adhesive Products Limited | Security films and manufacture thereof |
GB2520992A (en) * | 2013-12-06 | 2015-06-10 | Essentra Packaging & Security Ltd | Opening label |
RU2574781C2 (en) * | 2014-06-20 | 2016-02-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Санкт-Петербургский государственный университет технологии и дизайна" | Marking element |
GB2537050A (en) * | 2015-03-31 | 2016-10-05 | Seal King Ind Co Ltd | Unsealing indication structure of counterfeit tape |
CN114173843A (en) * | 2019-08-02 | 2022-03-11 | 3M创新有限公司 | Tamper-evident closure |
WO2023126839A1 (en) * | 2021-12-27 | 2023-07-06 | 3M Innovative Properties Company | Sealing film with perimeter edge weakness for tamper evident protection |
Also Published As
Publication number | Publication date |
---|---|
EP0491099B1 (en) | 1996-08-28 |
DE69028309D1 (en) | 1996-10-02 |
DE69028309T2 (en) | 1997-01-23 |
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