EP1723038A1 - A method for wrapping an article with a polymeric film - Google Patents
A method for wrapping an article with a polymeric filmInfo
- Publication number
- EP1723038A1 EP1723038A1 EP05703199A EP05703199A EP1723038A1 EP 1723038 A1 EP1723038 A1 EP 1723038A1 EP 05703199 A EP05703199 A EP 05703199A EP 05703199 A EP05703199 A EP 05703199A EP 1723038 A1 EP1723038 A1 EP 1723038A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- article
- polymeric
- wrapping
- around
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
- B65D75/002—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers in shrink films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/38—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses
- B29C63/40—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor by liberation of internal stresses using sheet or web-like material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B53/00—Shrinking wrappers, containers, or container covers during or after packaging
- B65B53/02—Shrinking wrappers, containers, or container covers during or after packaging by heat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D23/00—Details of bottles or jars not otherwise provided for
- B65D23/08—Coverings or external coatings
- B65D23/0842—Sheets or tubes applied around the bottle with or without subsequent folding operations
- B65D23/0878—Shrunk on the bottle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
- B29C55/06—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique parallel with the direction of feed
Definitions
- This invention relates to novel uses of polymeric films produced by stretching in the longitudinal direction, and in particular by short-gap stretching.
- a short-gap-sfretching process is any process involving transferring a heated polymeric film from a first heated roll having a first radius and revolving in a first radial velocity to a second heated roll having a second radius and revolving in a second radial velocity, that is larger than said first radial velocity, through a gap which is as small as possible.
- Two publications that describe such processes are: US 5,184,379 and US 6,375,781.
- the present invention provides a method for wrapping an article with a heat shrinkable polymeric film comprising:
- Typical articles to be wrapped according to the present invention are containers, particularly cylindrical containers, most particularly cylindrical containers with non-uniform diameter such as drink-containing bottles, drinking cans, containers for liquid soap, shampoo containers, batteries, medications, bottles with tamper evidence seals, etc.
- the invention is not limited to the wrapping of such articles, and may be used for wrapping articles of any shape or form, such as forks, cups, boards, etc.
- wrapping an article should be construed, in the context of the present invention, as to surrounding the article in close proximity to the outer surface thereof. In many cases, wrapping includes the attachment of the wrapping film to the entire surface of the wrapped portion of the article. However, this is not necessarily the case, and the invention is not limited to such cases.
- a heat shrinkable film is a film that shrinks upon heating. It may shrink in two dimensions (biaxially shrinkable film) or only in one dimension (monoaxially shrinkable film).
- the shrinkable films according to the present invention shrink along one direction, while along the other direction they retain their original dimensions, or change by no more than 5%.
- the stretching of the film is mainly along its longitudinal direction, while contraction in other directions is practically impaired by the use of rollers having between them a distance which is at least ten times smaller than the width of the film (or of the rollers).
- the distance between the rollers may be in accordance with the present invention smaller than the width of the film in a factor of between 10 and 5000, preferably between about 50 and about 2500.
- the shrinkable film is used when its shrinkable dimension is in the direction of the film flow, and the wrapping is carried out in the wrap around method.
- the film wrapped around the article in the sleeve method namely, it is first cut, closed to form a sleeve having its main axis in the direction of the film flow, the article is inserted into the sleeve, which is then heated to shrink around the article.
- the degree of shrinking obtained in the method according to the invention may be between about 10% and about 90%.
- the present invention which uses polymeric film produced by the short-gap-stretching process, is the only technical solution known to the inventors to date. Accordingly, the present invention also provides a polymeric sheet that is unidirectionally shrinked along its main axis (namely in the machine direction) to 50% or less of its original dimension, preferably to 40% or less.
- the polymeric sheet is made of polyolefin, such as polyethylene or polypropylene
- the state of the art allows unidirectional shrinking to no less than 75% of the original dimension in the machine direction
- the present invention provides sheets made by such polymers that are shrinked to 70% or less, preferably to 60% or less of their original dimension.
- the possibility to shrink polymeric sheets to a large degree allows wrapping an article in the wrap-around method, even if its circumference in one location is considerably different from the circumference in another location. In this connection, considerably different means difference of 50%) or more, and in the wrapping polymer is polyolefm, difference of 30%o or more.
- a polymeric film, for use in accordance with the invention may be composed of any polymeric material known in the art per se, and some examples for these are: polystyrene, polyolefins, such as polyethylene, polypropylene, polyvinylchloride, polyamides, Polyester, nylon, copolymers thereof, mixtures thereof, cyclic olefinic copolymers, etc.
- a shrinkable polymeric film that is a multilayer is also suitable for use in accordance with the invention.
- Non- limiting examples for suitable heat shrinkable polymers are such multilayers wherein all the multilayer is stretched as in (a) above, and a multilayer that is produced by attaching a layer that is stretched as in (a) above to another layer, for example, to a bidirectionally oriented layer. Such attaching may be carried out in any of the methods known in the art, such as lamination, coextrusion, and the like.
- the wrapping may have characteristics such as being a barrier to gases such as oxygen, nitrogen, air, and C0 2 , and/or to water vapor, UV rays, or combinations thereof. In this way, wrappings that lengthen the shelf life of articles that are sensitive to water, oxygen, and/or UV may be obtained.
- the temperature to which a film must be heated to shrink it is as known in the art regarding similar films that were obtained by other techniques (i.e. between about 80 and about 120°C, depending on the kind of polymer applied), although some adjustments may be required.
- a polymeric film was produced from a blend of two polyethylene resins, one of which was produced in Spain by Dow Plastics and sold under the trade-name of DowlexTM, and the other produced by Basell Polyolefms (Germany) and sold under the trade-name of HostalenTM.
- the polymer was processed in a short-gap-stretching machine produced by Lenzing Aktiengesellschaft, described in US 5,184,379, at a heating temperature of 100°C - 120°C and a stretch ratio of 1 :6 to produce a monoaxially heat shrinkable film.
- the film produced in this way underwent shrinkage by up to 70% upon subsequent heating to 100°C - 110°C.
- the obtained monoaxially shrinkable film was used for wrapping a plastic bottle in the shape of a woman, having a maximal outer diameter of 6.84 cm and minimal outer diameter of 6.05 cm.
- the wrapping was carried out on a KRONES roll-fed shrink labeling systems type Krones Contiroll 720-12, at 18,000 bottles per hour and at a tunnel temperature of 250°C.
- the film was wrapped around a drum, cut to form a label, and glue was applied to the label's edges. Then the label was wrapped around the bottle such that the glued edges attached the label to the bottle, and the labeled bottle was heated to let the label shrink.
- This is in contrast to the sleeve method, which is not in accordance with the present invention, wherein the article to be wrapped is introduced into a sleeve made of the wrapping polymer, and then the sleeve is shrunk.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL16028304A IL160283A0 (en) | 2003-08-05 | 2004-02-09 | A method for wrapping an article with a polymeric film |
PCT/IL2005/000157 WO2005075296A1 (en) | 2004-02-09 | 2005-02-09 | A method for wrapping an article with a polymeric film |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1723038A1 true EP1723038A1 (en) | 2006-11-22 |
Family
ID=34835402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05703199A Ceased EP1723038A1 (en) | 2004-02-09 | 2005-02-09 | A method for wrapping an article with a polymeric film |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1723038A1 (en) |
BR (1) | BRPI0507541A (en) |
RU (1) | RU2391269C2 (en) |
UA (1) | UA90257C2 (en) |
WO (1) | WO2005075296A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8282754B2 (en) | 2007-04-05 | 2012-10-09 | Avery Dennison Corporation | Pressure sensitive shrink label |
US8535464B2 (en) | 2007-04-05 | 2013-09-17 | Avery Dennison Corporation | Pressure sensitive shrink label |
US9221573B2 (en) | 2010-01-28 | 2015-12-29 | Avery Dennison Corporation | Label applicator belt system |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202006001454U1 (en) | 2005-08-04 | 2006-04-20 | Polysack Plastic Industries Ltd. | Stretched polymer foil, useful for e.g. wrapping as label/packing around articles (e.g. bonbon), comprises cyclic olefinic copolymers and/or cyclic olefinic polymers |
DE102007029315B3 (en) * | 2007-06-22 | 2008-11-20 | Henkel Ag & Co. Kgaa | Packaging with improved water vapor permeability |
PL2569219T3 (en) | 2010-05-12 | 2014-09-30 | Avery Dennison Corp | Heat shrink packaging system and method |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1103080A (en) * | 1967-01-30 | 1968-02-14 | Shell Int Research | Article packed in a heat-shrunk foamed polymer sheet material, and method of providing same |
US3796785A (en) * | 1971-03-15 | 1974-03-12 | Bayer Ag | Method of stretching a thermoplastic sheet using a shortened stretching zone |
US4059400A (en) * | 1976-03-31 | 1977-11-22 | Owens-Illinois, Inc. | Oven apparatus for shrinking thermoplastic sleeve wraps on glass containers |
FR2622532B2 (en) * | 1987-06-24 | 1991-05-31 | Newtec Int | METHOD AND DEVICE FOR PACKAGING A BULK LOAD OF IRREGULAR OR ROTATED FORM SUCH AS A VEHICLE IN A PLASTIC FILM AND PACKAGING THUS MADE |
US5175049A (en) * | 1989-04-27 | 1992-12-29 | The Dow Chemical Company | Polyolefin laminate cling films |
US5234731A (en) * | 1990-05-25 | 1993-08-10 | W.R. Grace & Co.-Conn. | Thermoplastic multi-layer packaging film and bags made therefrom having two layers of very low density polyethylene |
US6375781B1 (en) * | 1999-10-28 | 2002-04-23 | Illinois Tool Works Inc. | Apparatus and high speed process for making highly stretched film |
DE10003016B4 (en) * | 2000-01-25 | 2004-07-01 | Heikaus Unternehmensbeteiligungen Und Verwaltung Gmbh | Unwinding aid for picking up unrolled film rolls |
-
2005
- 2005-02-09 UA UAA200609406A patent/UA90257C2/en unknown
- 2005-02-09 WO PCT/IL2005/000157 patent/WO2005075296A1/en active Application Filing
- 2005-02-09 BR BRPI0507541-6A patent/BRPI0507541A/en not_active IP Right Cessation
- 2005-02-09 EP EP05703199A patent/EP1723038A1/en not_active Ceased
- 2005-02-09 RU RU2006130853/11A patent/RU2391269C2/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO2005075296A1 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8282754B2 (en) | 2007-04-05 | 2012-10-09 | Avery Dennison Corporation | Pressure sensitive shrink label |
US8535464B2 (en) | 2007-04-05 | 2013-09-17 | Avery Dennison Corporation | Pressure sensitive shrink label |
US9221573B2 (en) | 2010-01-28 | 2015-12-29 | Avery Dennison Corporation | Label applicator belt system |
US9637264B2 (en) | 2010-01-28 | 2017-05-02 | Avery Dennison Corporation | Label applicator belt system |
Also Published As
Publication number | Publication date |
---|---|
BRPI0507541A (en) | 2007-07-03 |
UA90257C2 (en) | 2010-04-26 |
WO2005075296A1 (en) | 2005-08-18 |
RU2006130853A (en) | 2008-03-20 |
RU2391269C2 (en) | 2010-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20060904 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20070209 |
|
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GUTHMAN, YOAV Inventor name: SEGAL, MAOR Inventor name: BEN-SOUSSANE, AHARON Inventor name: NIR, YIFTACH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
|
18R | Application refused |
Effective date: 20100607 |