WO2014177754A1 - Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette - Google Patents

Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette Download PDF

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Publication number
WO2014177754A1
WO2014177754A1 PCT/FI2013/050481 FI2013050481W WO2014177754A1 WO 2014177754 A1 WO2014177754 A1 WO 2014177754A1 FI 2013050481 W FI2013050481 W FI 2013050481W WO 2014177754 A1 WO2014177754 A1 WO 2014177754A1
Authority
WO
WIPO (PCT)
Prior art keywords
plastic film
release liner
film
label
layer
Prior art date
Application number
PCT/FI2013/050481
Other languages
English (en)
Inventor
Noel Mitchell
Matti Manner
Original Assignee
Upm Raflatac Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Upm Raflatac Oy filed Critical Upm Raflatac Oy
Priority to PCT/FI2013/050481 priority Critical patent/WO2014177754A1/fr
Priority to DE112013007014.6T priority patent/DE112013007014T5/de
Publication of WO2014177754A1 publication Critical patent/WO2014177754A1/fr

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
    • G09F3/08—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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/405—Adhesives in the form of films or foils characterised by release liners characterised by the substrate of the release liner
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/22—Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/334—Applications of adhesives in processes or use of adhesives in the form of films or foils as a label
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/04—Presence of homo or copolymers of ethene
    • C09J2423/046—Presence of homo or copolymers of ethene in the substrate
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate

Definitions

  • a use of a release liner according to embodiments, wherein the release liner is used in adhesive label laminates suitable for attaching onto a surface of an article is provided.
  • a plastic film in a label laminate is provided.
  • the draw ratio of the plastic film may be at least 6.
  • the plastic film may be oriented in a machine direction.
  • the film may be further oriented in transverse direction with a draw ratio under 8, under 6, or under 2.
  • the plastic film may comprise or consist mainly of polypropylene, copolymer of propylene or combination thereof.
  • the plastic film may have a multilayer structure further comprising at least one skin layer.
  • the skin layer may have a thickness between 1 and 30% from the total thickness of the plastic film.
  • the plastic film may have 1 % secant at least 2000 MPa, at least 2200 or at least 2500 in machine direction of the film.
  • the polymer raw material for a plastic film may include recycled material, such as between 2 and 80 wt.% grinded polymer material comprising silicone particles.
  • the recycled material may be grinded from at least one of the following a spent release liner and a label laminate waste material comprising silicone coating layer.
  • Fig. 2 presents an example embodiment of a release liner 6 having a release coating layer 12 on top of the backing material 10. Further, the release liner may comprise at least one adhesive layer on top of the release coating layer 12. The release liner 6 is used to protect the adhesive layer 4 and to allow easier handling of the label web 8 up to the point where the labels 1 are die cut, dispensed and adhered to a surface of an item.
  • the backing material (substrate) 10 of the release liner 6 may consist of a polymeric (plastic) film, such as a polyester (PET) film.
  • the polyester film may biaxially oriented in both machine and transverse (cross) directions.
  • the substrate of release liner may be polyolefin based, such as polyethylene (PE) or polypropylene (PP).
  • PE polyethylene
  • PP polypropylene
  • the substrate may be a single layer plastic film (monolayer) or it may comprise several layers (multilayer).
  • the substrate consists of a multilayer structure having at least 2 plastic film layers.
  • the substrate consists of a multilayer structure having three or five layers.
  • the substrate 10 of release liner may have a multilayer structure consisting of a core layer 14, a first skin layer 16 and a second skin layer 18.
  • the multilayer structures can be made by co-extrusion, coating, or any other laminating process. In co-extrusion the layers of the multilayer structure are formed simultaneously by using a suitable co-extrusion die. The layers are adhered to each other to provide a unitary co-extrudate.
  • the multilayer films may be co-extruded through blown film extrusion technology. Alternatively, the films may be cast, i.e. produced by cast extrusion technology.
  • the plastic film composition includes particles of silicone.
  • at least 90 wt.% and more preferably at least 95 wt.% of the silicone particles are cured having cross-linked network structure.
  • the plastic film comprises under 10 wt.% or preferably under 5 wt.% silicone which is non-cured, i.e. monomers of silicone.
  • the amount of silicone is at most 20 wt.% or 10 wt.%, advantageously at most 8 wt.% or 5 wt.%, more preferably at most 2 or 1 wt.%.
  • the amount of silicone is under 2%, or under 1 .5%, preferably under 1 %.
  • machine direction refers to the running direction (S x ) of the film during manufacturing, as shown in Fig. 6.
  • the plastic film may oriented in transverse direction (TD) in direction S y or it may be oriented biaxially, i.e. in both machine direction and transverse direction.
  • polypropylene (PP) film comprising silicone mixed within the polypropylene matrix is oriented only in machine direction.
  • the silicone is in particulate form and the silicone particles are cured, i.e. have cross-linked network structure.
  • the silicone content of the film may be e.g. 1 1 wt.%.
  • An orientation ration in MDO the film may be at least 4 or 5, preferably at least 6 or 7.
  • the draw ratio in machine direction may be between 4.5 and 8. Thanks to the machine direction orientation specific mechanical properties of the film, such as sufficient modulus in machine direction and/or elongation in both machine direction and in cross direction, may be achieved providing efficient printing and subsequent application of the label.
  • the non-oriented plastic film having thickness around 200 microns and wherein the film consists mainly of PP without silicone particles may have haze around 35%.
  • the haze of non-oriented PP film may be increased.
  • haze of the film including silicone may be at least 5% or 8% higher than the haze of the film without silicone.
  • haze may be at least 15 or 30% higher when the film contains silicone particles.
  • Haze of the polypropylene based film having drawing ratio 6 (in MD) and thickness around 40 microns may also increase with increasing silicone content.
  • haze of the oriented film including silicone may be at least 10%, 30% or 40% higher than the haze of the film without silicone.
  • Haze of machine direction oriented film including silicone particles may be 160 or even 240% higher than the oriented film without silicone.
  • optical properties of the films may be controlled. Thanks to the silicone particles haze of the oriented plastic films may be increased, for example, between 10 and 250 %.
  • Table 3 and Fig. 9 present haze (%) of the films relative to thickness ( ⁇ ) of the film. Amount of reclaim containing silicone 5, 10, 20 and 30 wt.% corresponds to the silicone particle content of around 0.12, 0.24, 0.48 and 0.78 wt.%, respectively. It can be clearly observed that the orientation with draw ratio 6 further increases the haze of the films which contain silicone particles.
  • haze of propylene based films oriented at least in one direction and comprising silicone particles between 0.01 and 10 wt.% and having thickness between 10 and 40 microns may be above 20% or 45%, preferably above 30% or 40%, more preferably above 45 or 50%.
  • haze of the oriented films comprising between 0.01 and 10 wt.% silicone particles may be between 20 and 70%, between 30 and 60% or between 35 and 50%.
  • the drawing ratio in at least one direction of the film is above 4, for example at least 4.5 or 5. Due to the increase in orientation (drawing ratio) the haze of the silicone containing films may be additionally increased.
  • the re-cycling process of the film may also become easier.
  • the reduced tear resistance of the film makes the grinding of the film to smaller particles, such as flakes, more easy.
  • Grinded material may be further granulated prior to further use.
  • the grinded and granulated material is easy to be reclaimed, inter alia, in plastic film manufacturing process where the flakes and/or granulates are fed through an extruder and formed into a new film.
  • the film can be made entirely from the re-cycled film or in combination with virgin polymers.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne un film en plastique d'un stratifié pour étiquette. Selon un mode de réalisation, le film en plastique peut comprendre au moins du polyéthylène, du polypropylène ou un copolymère de propylène, ainsi qu'au moins 0,01 % en poids de particules de silicone. Le film en plastique peut être orienté au moins dans une direction avec un rapport d'étirage d'au moins 4. Selon un mode de réalisation, le film en plastique peut être un revêtement anti-adhésif d'un stratifié pour étiquette. En outre, l'invention concerne une fabrication du film en plastique.
PCT/FI2013/050481 2013-04-30 2013-04-30 Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette WO2014177754A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/FI2013/050481 WO2014177754A1 (fr) 2013-04-30 2013-04-30 Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette
DE112013007014.6T DE112013007014T5 (de) 2013-04-30 2013-04-30 Folie für ein Etikett, Etikettenlaminat und Verfahren zur Herstellung eines Etikettenlaminats

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/FI2013/050481 WO2014177754A1 (fr) 2013-04-30 2013-04-30 Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette

Publications (1)

Publication Number Publication Date
WO2014177754A1 true WO2014177754A1 (fr) 2014-11-06

Family

ID=48483103

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2013/050481 WO2014177754A1 (fr) 2013-04-30 2013-04-30 Film pour étiquette, stratifié pour étiquette et procédé de fabrication d'un stratifié pour étiquette

Country Status (2)

Country Link
DE (1) DE112013007014T5 (fr)
WO (1) WO2014177754A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242055A2 (fr) * 1986-03-17 1987-10-21 Mitsubishi Petrochemical Co., Ltd. Pellicule de polypropylène crystallin
US5981047A (en) * 1996-06-25 1999-11-09 Applied Extrusion Technologies, Inc. Matte finish biaxially oriented polypropylene film for cold seal release applications
EP2599628A1 (fr) * 2011-12-02 2013-06-05 Irplast S.p.A. Films en plastique
EP2599627A1 (fr) * 2011-12-02 2013-06-05 Irplast S.p.A. Films en plastique

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0242055A2 (fr) * 1986-03-17 1987-10-21 Mitsubishi Petrochemical Co., Ltd. Pellicule de polypropylène crystallin
US5981047A (en) * 1996-06-25 1999-11-09 Applied Extrusion Technologies, Inc. Matte finish biaxially oriented polypropylene film for cold seal release applications
EP2599628A1 (fr) * 2011-12-02 2013-06-05 Irplast S.p.A. Films en plastique
EP2599627A1 (fr) * 2011-12-02 2013-06-05 Irplast S.p.A. Films en plastique

Also Published As

Publication number Publication date
DE112013007014T5 (de) 2016-01-21

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