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EP4599006A1 - Constructions en couches ayant des couches amovibles - Google Patents

Constructions en couches ayant des couches amovibles

Info

Publication number
EP4599006A1
EP4599006A1 EP23813889.5A EP23813889A EP4599006A1 EP 4599006 A1 EP4599006 A1 EP 4599006A1 EP 23813889 A EP23813889 A EP 23813889A EP 4599006 A1 EP4599006 A1 EP 4599006A1
Authority
EP
European Patent Office
Prior art keywords
composition
combinations
group
resin
binder
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.)
Pending
Application number
EP23813889.5A
Other languages
German (de)
English (en)
Inventor
Olessya LOIKO
Jordy VAN DER HEIJDEN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Avery Dennison Corp
Original Assignee
Avery Dennison Corp
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 Avery Dennison Corp filed Critical Avery Dennison Corp
Publication of EP4599006A1 publication Critical patent/EP4599006A1/fr
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films

Definitions

  • the present invention generally relates to layered constructions. More particularly, the invention relates to layered constructions, such as those used in pressure-sensitive adhesive constructions and release liners and components parts thereof, and to methods of using the layered constructions.
  • BACKGROUND [0003] Packaging is generally marked with information and/or decoration.
  • the present invention relates to removable layers, to layered constructions, such as those used in pressure sensitive adhesive constructions, release liner constructions, or printed facestock, wherein at least one of the layers can be removed, and to methods of using the layered constructions.
  • copolymer is used herein to refer to polymers containing copolymerized units of at least two different monomers (i.e., a dipolymer).
  • facestock means a layer or multiple layers of film material (such as paper, polymeric film, fabric, metallic foil, or combinations thereof) to which printed indicia is added and which optionally be corona treated.
  • the facestock has two sides, including a side that is outward facing and that can receive printed indicia (directly or indirectly) and the other side that is inward facing and that can receive the adhesive layer.
  • Suitable facestocks include paper, polymeric film, co-extruded films, metallic films, coated versions thereof, recycled content version thereof, or combinations thereof.
  • Representative examples include, without limitation, polyester, polyethylene terephthalate, low-density polyethylene, high-density polyethylene, biaxially-oriented polypropylene, polystyrene, and polyvinyl chloride and the like.
  • the thickness of the facestock typically ranges from 10 ⁇ m to 250 ⁇ m, preferably 10 ⁇ m to 180 ⁇ m for film and 30 ⁇ m to 220 ⁇ m for paper.
  • the term “adhesive layer” means a layer or multiple layers of the same or different pressure sensitive adhesives applied to at least a portion of the surface of the facestock.
  • the thickness of the adhesive layer typically ranges from 20 ⁇ m to at least 125 ⁇ m.
  • the adhesive layer preferably comprises a pressure sensitive adhesive, which may be permanent or removable.
  • pressure sensitive adhesive refers to a material that may be identified by the Dahlquist criterion, which defines a pressure sensitive adhesive as an adhesive having a one second creep compliance of greater than 1x10 -6 cm 2 /dyne as described in Handbook of PSA Technology, Donatas Satas (Ed.), 2 nd Edition, page 172, Van Nostrand Reinhold, New York, N.Y., 1989. Since modulus is, to a first approximation, the inverse of creep compliance, pressure sensitive adhesives may also be defined as adhesives having a Young’s modulus of less than 1x10 6 dynes/cm 2 .
  • Another well-known means of identifying a pressure sensitive adhesive is an adhesive that it is aggressively and permanently tacky at room temperature and firmly adheres to a variety of dissimilar surfaces upon mere contact without the need of more than finger or hand pressure, and which may be removed from smooth surfaces without leaving a residue, as described in Glossary of Terms Used in the Pressure Sensitive Tape Industry provided by the Pressure Sensitive Tape Council, 1996.
  • a suitable pressure sensitive adhesive preferably has a room temperature storage modulus within the area defined by the following points as plotted on a graph of modulus versus frequency at 25°C: a range of moduli from about 2x10 5 to 4x10 5 dynes/cm 2 at a frequency of about 0.1 radians/sec (0.017 Hz), and a range of moduli from about 2x10 6 to 8x10 6 dynes/cm 2 at a frequency of approximately 100 radians/sec (17 Hz). See, for example, Handbook of PSA Technology (Donatas Satas, Ed.), 2 nd Edition, page 173, Van Nostrand Rheinhold, N.Y., 1989.
  • Pressure sensitive adhesives are permanently tacky in dry form and can firmly adhere to a substrate with very light pressure. The adhesive requires no activation by solvent, water, or heat to exert sufficient holding power.
  • the term “permanent” as it relates to “pressure sensitive adhesive” means a pressure sensitive adhesive that is not easily removable without total or partial destruction of the layered construction (of which it is a part) or substrate (to which the layered construction is applied). Permanent adhesives present adhesion values greater than 230 N/m, based on Finat Test Method 1 - Peel adhesion (180°) at 300 mm/minute.
  • a permanent adhesive is S0290 adhesive, available from Avery Dennison Corporation.
  • the term “removable” as it relates to “pressure sensitive adhesive” means a pressure sensitive adhesive that is removable without destruction of the layered construction (of which it is a part) or substrate (to which the layered construction is applied).
  • Removable adhesives present adhesion values greater than 30 N/m, based on Finat Test Method 1 - Peel adhesion (180°) at 300 mm/minute.
  • Such removable pressure sensitive adhesives have low adhesion to the substrate, allowing for the easy hand removal of the layered construction from the substrate to which it is applied.
  • Removable pressure sensitive adhesives include true removable adhesives, which are chemically designed for removability, and permanent adhesives that are applied at a low coat weight such that they remain removable.
  • An example of a removable adhesive is R185 adhesive, available from Avery Dennison Corporation.
  • the phrase “release liner” means film sheet (typically paper such as kraft or glassine, or polymeric film such as PET or polyolefin, usually applied during the manufacturing process) used to prevent a sticky surface from prematurely adhering. It is coated on one or both sides with a release agent, which provides a release effect against any type of a sticky material, such as an adhesive or a mastic. The release agent may be applied a coating level of 0.5-3 gsm.
  • the phrase “printed indicia” means any string of alphanumeric or special characters used to convey information (such as name, residence or mailing address, telephone number, prescription number, and the like) and/or provide aesthetic appeal.
  • the indicia may be printed in any suitable means including printing by hand, typewriter, or convention printing (such as flexographic printing, offset printing, inkjet printing, laser inkjet printing, videojet printing, thermal transfer, direct printing, gravure printing, and the like).
  • label means a two-dimensional piece of paper, fabric, plastic, or similar material configured to be attached to an object and giving information about it and/or decoration to it.
  • compositions comprising: at least 15% by weight, based on the total weight of the composition, of at least one binder that has a polymeric backbone with pendent hydroxyl or carboxyl groups that have been esterified or acetalized or ketalized to such an extent that the binder component has an acid value of 0-200 mg KOH/g or a hydroxyl value of 0-600 mg KOH/g (preferably 0-400 mg KOH/g) (preferably, wherein the polymeric backbone comprises carbon and optional heteroatoms); at least one hydrophobic resin; and at least one crosslinker.
  • the invention is also directed to layered constructions, comprising: a facestock with a first surface and a second surface; an adhesive on the first surface; and a top coat on the second surface, wherein the top coat comprises the composition disclosed herein.
  • the invention is also directed to methods of recycling, comprising: providing an article with a label adhered thereto; wherein the label comprises the layered construction disclosed herein; and wherein the layered construction further comprises printed indicia on the top coat; and exposing the label to a non-ambient stimulus for a time sufficient to separate 100% of the printed indicia from the facestock.
  • the compositions further comprise at least one antiblocking agent.
  • the compositions further comprise at least one auxiliary resin selected from the group consisting of nitrocellulose, polyester, ketonic resin, maleic resin, polyurethane, and combinations thereof, such as those disclosed in WO2021/165081, and WO2022/002734, which are incorporated herein by reference in their entirety.
  • the compositions further comprise at least one soft resin, preferably having a glass transition temperature as measured at differential scanning calorimetry at a rate of 20°C/minute.
  • UV Flexo ink adhesion was tested using lab scale flexo press: Flexiproof 100 UV Flexo Printer. Printing was done using 2 band anilox, 3 cm 3 /m 2 and 4 cm 3 /m 2 , at speed of 40mJ/cm 2 and the following three inks: ⁇ Flint Flexocure Force (conventional) ⁇ Zeller+Gmelin Y81(Low Migration) ⁇ Siegwerk-Nutriflex (Low Migration) Ink anchorage was evaluated by doing a tape test using a SCOTCH-brand 810 tape.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Adhesive Tapes (AREA)

Abstract

L'invention concerne des constructions en couches ayant des couches amovibles, telles que celles utilisées dans des constructions adhésives sensibles à la pression et des pellicules antiadhésives et des parties de composants de celles-ci. L'invention concerne également des procédés d'utilisation des constructions en couches.
EP23813889.5A 2022-12-22 2023-11-22 Constructions en couches ayant des couches amovibles Pending EP4599006A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263476746P 2022-12-22 2022-12-22
PCT/IB2023/061805 WO2024134314A1 (fr) 2022-12-22 2023-11-22 Constructions en couches ayant des couches amovibles

Publications (1)

Publication Number Publication Date
EP4599006A1 true EP4599006A1 (fr) 2025-08-13

Family

ID=88975667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23813889.5A Pending EP4599006A1 (fr) 2022-12-22 2023-11-22 Constructions en couches ayant des couches amovibles

Country Status (3)

Country Link
EP (1) EP4599006A1 (fr)
CN (1) CN120303355A (fr)
WO (1) WO2024134314A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3822738B2 (ja) * 1998-01-21 2006-09-20 大日精化工業株式会社 アルカリ処理脱離性を有するインキ組成物及び印刷物から該インキ組成物の脱離方法
JP2000214620A (ja) * 1999-01-27 2000-08-04 Minolta Co Ltd リサイクル可能な被記録材
JP2005046770A (ja) * 2003-07-30 2005-02-24 Ohashi Kagaku Kogyo Kk 塗膜剥離方法、プラスチック成形品のリサイクル方法およびこれらの方法に使用する剥離液
KR101756257B1 (ko) * 2009-02-06 2017-07-10 애버리 데니슨 코포레이션 벌크 탑코트용 수지
EP4107326A1 (fr) 2020-02-19 2022-12-28 Siegwerk Druckfarben AG & Co. KGaA Désencrage de substrats imprimés
EP3932642A1 (fr) * 2020-07-03 2022-01-05 Siegwerk Druckfarben AG & Co. KGaA Amorce de délaminage pour désencrage
WO2022259834A1 (fr) * 2021-06-09 2022-12-15 Dic株式会社 Composition pour former un film de revêtement séparable
CN114736580A (zh) * 2022-04-13 2022-07-12 滁州金桥德克新材料有限公司无锡分公司 一种水性离形胶及其制备方法和应用

Also Published As

Publication number Publication date
WO2024134314A1 (fr) 2024-06-27
CN120303355A (zh) 2025-07-11

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