WO1999023631A1 - Thermally-activated label and method for producing label stock film for same - Google Patents
Thermally-activated label and method for producing label stock film for same Download PDFInfo
- Publication number
- WO1999023631A1 WO1999023631A1 PCT/US1998/023590 US9823590W WO9923631A1 WO 1999023631 A1 WO1999023631 A1 WO 1999023631A1 US 9823590 W US9823590 W US 9823590W WO 9923631 A1 WO9923631 A1 WO 9923631A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- film
- label stock
- label
- stock film
- thermal load
- Prior art date
Links
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
-
- 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
Definitions
- the present invention relates to label stock films and, more specifically, to a film capable of use as self-adhering label stock not requiring a secondary coating process or a release liner, and a method for producing same.
- PSL pressure sensitive labels
- a substrate such as a bottle or other surface
- PSLs are widely utilized in various industries due to their superior endurance and performance characteristics.
- PSLs require that a pressure sensitive adhesive be coated or otherwise applied to the surface of the film in a secondary process.
- a release liner is required to cover the adhesive layer until such time as the label is actually used. Without the presence of a release liner, the film will adhere to itself and to other surfaces prior to its use.
- the present invention comprises a label stock film capable of serving as a self-adhering label without the need for a second adhesive coating or a release liner.
- the improved label stock film is preferably of the one side smooth, one side rough type (e.g. , "OSM") so that blocking and wrinkling of the film are substantially minimized, if not completely eliminated.
- OSM one side smooth, one side rough type
- a label stock film capable of serving as a self-adhering label without the need for a second adhesive coating or a release liner.
- the improved label stock film is preferably of the one side smooth, one side rough type (e.g., "OSM") so that blocking and wrinkling of the film are substantially minimized, if not completely eliminated.
- OSM one side smooth, one side rough type
- the improved label stock film of the present invention comprises a film preferentially having a smooth side, a rough side and, optionally, one or more core layers interposed between the smooth side and the rough side.
- the multiple layers are preferably coextruded.
- the smooth side comprises at least one layer of a thermoplastic film. In use, the smooth side is applied to the surface of the substrate to be labeled.
- the rough side is also comprised of at least one layer of a thermoplastic film.
- the rough side is preferably matte embossed, but can be roughened via any suitable means. The rough side prevents the film from contacting as much surface area of itself, or any other undesired surface, preventing blocking and wrinkling of the film and thus eliminating the need for a release liner.
- the rough side also serves to provide ink or pencil writeability and paper-like aesthetics.
- At least one core layer may be interposed between the smooth side and the rough side of the improved label stock film and, if present, is also comprised of a thermoplastic film, or a combination of thermoplastic films.
- the adhesion produced between the smooth side of the improved label stock film of the present invention and the surface to be labeled is provided via a heat-activated adhering material.
- the improved label stock film of the present invention is permanently affixed to a substrate using a predetermined thermal load.
- the adhering material does exhibit a small amount of tackiness without a thermal load, allowing the label to be preliminarily placed or set (and reset or repositioned, if necessary) before the thermal load is applied, permanently affixing the label into desired position.
- This feature of the heat-activated label stock film of the present invention represents a significant advantage over PSL films, which must be placed correctly the first time (.. e.
- the adherence material of the improved label stock film of the present invention is energy-activated and can be activated through the application of energy sources other than thermal energy, including without limitation, ultraviolet light and other wave-based energy sources.
- the heat-activated adhering material is comprised of certain polymers and co-polymers associated with the smooth side of the film. The identity and quantities of these polymers are dictated by the conditions (e.g. , temperature) under which the improved label stock film will be applied and ultimately used.
- a preferred polymer associated with the smooth side of the first layer is a styrene-ethylene-butylene-styrene block copolymer ("SEBS”), a styrene-ethylene- propylene block copolymer (“SEP”), or blends thereof, such as Kraton®-G polymers available from Shell Chemical Company.
- SEBS styrene-ethylene-butylene-styrene block copolymer
- SEP styrene-ethylene- propylene block copolymer
- Kraton®-G polymers available from Shell Chemical Company.
- Copolymers suitable for use in the present invention include, without limitation: relatively soft and low melt temperature copolymers, such as ethylene vinylacetates (EVA), ethylene acrylic acid (“EAA”), ethylmethyl acrylates (“EMA”), ethymethyl methacrylate (“EMMA”) and metallocene catalyzed polymers (e.g., the Affinity® polymer groups available from Dow Chemical Company or the Exact® polymer group available from Exxon); anhydride modified polymers, acid modified and acid/acrylate modified copolymers (e.g., the Bynel® polymer group available from duPont) and CXA resins are also useful.
- EVA ethylene vinylacetates
- EAA ethylene acrylic acid
- EMA ethylmethyl acrylates
- EMMA ethymethyl methacrylate
- metallocene catalyzed polymers e.g., the Affinity® polymer groups available from Dow Chemical Company or the Exact® polymer group available
- the preferred polymers for use in connection with the rough side of the improved label stock film include polyolefins, such as polyethylenes (e.g. , HDPE), polypropylenes, nylons, polyesters, EVOH, polystyrene, and the like, or blends thereof.
- the level of adhesion can be adjusted (via controlled addition and quantity of polymers and copolymers) to provide adequate levels of adhesion to substrates at various temperatures and environmental conditions under which the label will perform.
- the improved label stock film of the present invention can be constructed using coextrusion technology known in the art, including, without limitation, blown, cast or calendar extrusion techniques. Extrusion dies used in connection therewith may incorporate combining adapters or can be multicavity hardware. Importantly, in contrast to PSL films, only a single coextrusion is needed since a secondary coating process is not required with the improved label stock film of the present invention.
- the polymers and/or copolymers of the smooth side of the improved label stock film of the present invention are coextrudable and therefore generally rigid to semi-rigid at room temperature, forming ideal label stock and eliminating the need for a carrier web or the like.
- the lack of relative tackiness at room temperature coupled with the roughened side prevent blocking and wrinkling of the film until its use is desired.
- the adherence material is heat-activated to increase tackiness in one or several ways: some heat activated polymers merely soften and"wet out” in response to the application of heat. Upon cooling, a relatively strong bond is formed and enhanced by the filling up of microspaces and the like with softened polymer during the heat application phase. Other polymers undergo a chemical transformation in response to heat, increasing the affinity of the transformed material for the substrate and creating a bond. Still other polymers transform a portion of the heat applied to the substrate itself, melting a small amount of the substrate material as well as the polymer material and, upon cooling, creating a fusion of the two materials.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Laminated Bodies (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU13099/99A AU1309999A (en) | 1997-11-05 | 1998-11-05 | Thermally-activated label and method for producing label stock film for same |
EP98956615A EP1029319A1 (en) | 1997-11-05 | 1998-11-05 | Thermally-activated label and method for producing label stock film for same |
CA002309120A CA2309120A1 (en) | 1997-11-05 | 1998-11-05 | Thermally-activated label and method for producing label stock film for same |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US6452497P | 1997-11-05 | 1997-11-05 | |
US60/064,524 | 1997-11-05 | ||
US09/186,178 | 1998-11-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999023631A1 true WO1999023631A1 (en) | 1999-05-14 |
Family
ID=22056571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1998/023590 WO1999023631A1 (en) | 1997-11-05 | 1998-11-05 | Thermally-activated label and method for producing label stock film for same |
Country Status (2)
Country | Link |
---|---|
AU (1) | AU1309999A (en) |
WO (1) | WO1999023631A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5737534A (en) * | 1980-08-15 | 1982-03-01 | Ii Dee Emu Kk | Method and device for pasting thermo-sensitive adhesive label |
US4766301A (en) * | 1985-08-20 | 1988-08-23 | Robert A. Van der Laan | Textile fabric with woven-in bar code |
JPH08305289A (en) * | 1995-05-09 | 1996-11-22 | Mitsuko Seki | Releasable complex sheet, its manufacture, and article using the same |
JPH09281894A (en) * | 1996-04-18 | 1997-10-31 | Nitto Denko Corp | Printing sheet |
-
1998
- 1998-11-05 AU AU13099/99A patent/AU1309999A/en not_active Abandoned
- 1998-11-05 WO PCT/US1998/023590 patent/WO1999023631A1/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5737534A (en) * | 1980-08-15 | 1982-03-01 | Ii Dee Emu Kk | Method and device for pasting thermo-sensitive adhesive label |
US4766301A (en) * | 1985-08-20 | 1988-08-23 | Robert A. Van der Laan | Textile fabric with woven-in bar code |
JPH08305289A (en) * | 1995-05-09 | 1996-11-22 | Mitsuko Seki | Releasable complex sheet, its manufacture, and article using the same |
JPH09281894A (en) * | 1996-04-18 | 1997-10-31 | Nitto Denko Corp | Printing sheet |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 097, no. 003 31 March 1997 (1997-03-31) * |
PATENT ABSTRACTS OF JAPAN vol. 098, no. 002 30 January 1998 (1998-01-30) * |
Also Published As
Publication number | Publication date |
---|---|
AU1309999A (en) | 1999-05-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6663974B2 (en) | Structures containing a non-oriented multilayer film with a polyolefin core | |
US6706342B2 (en) | Polymeric labels | |
US6042930A (en) | Plastic heat-activated adhesive labels | |
US6110552A (en) | Release liners for pressure sensitive adhesive labels | |
US6576329B2 (en) | Multilayer thermoplastic film | |
US5691022A (en) | Release liner base stock for printed films or labels | |
AU2001294903A1 (en) | Protective coating for metal surfaces containing a non-oriented multilayer film with a polyolefin core | |
JPS6353032A (en) | Adhesive coating and releasable film for laminating | |
WO2000024579A1 (en) | Support and thermal transfer image receptor | |
JP3931958B2 (en) | Laminate manufacturing method and manufacturing apparatus | |
US6127032A (en) | Adhesive film for glass substrates | |
US7648608B2 (en) | Method for producing a multilayer coextrudate and a film structure produced by this method | |
JP3185590B2 (en) | Decorative sheet and method for producing the same | |
JP3332614B2 (en) | Marking film laminated sheet | |
WO1999023631A1 (en) | Thermally-activated label and method for producing label stock film for same | |
EP1029319A1 (en) | Thermally-activated label and method for producing label stock film for same | |
JP2018154100A (en) | Thermal transfer sheet, method of manufacturing decorative article, and decoration product | |
RU2447116C2 (en) | Method of fabricating laminar material for labels | |
JPH10138316A (en) | Manufacture of resin/metal laminated material | |
JP3629917B2 (en) | Roll for extrusion lamination | |
DE50114349D1 (en) | BIAXIALLY ORIENTED POLYOLEFIN FILM WITH REDUCED BLOCKS, AGAINST COLD LABELS | |
JP3191622B2 (en) | Method for producing embossed decorative sheet | |
JPH0467087A (en) | Laminate label and its manufacture | |
JP3895052B2 (en) | Release film | |
JP3961065B2 (en) | Heat-sensitive adhesive sheet and method for producing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
ENP | Entry into the national phase |
Ref document number: 2309120 Country of ref document: CA Ref country code: CA Ref document number: 2309120 Kind code of ref document: A Format of ref document f/p: F |
|
NENP | Non-entry into the national phase |
Ref country code: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1998956615 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1998956615 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998956615 Country of ref document: EP |