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1. WO2020203214 - LAYERED FILM

Publication Number WO/2020/203214
Publication Date 08.10.2020
International Application No. PCT/JP2020/011393
International Filing Date 16.03.2020
IPC
B32B 25/14 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
25Layered products essentially comprising natural or synthetic rubber
14comprising copolymers in which synthetic rubber constituents predominate
B32B 27/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
32LAYERED PRODUCTS
BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
27Layered products essentially comprising synthetic resin
C09J 109/06 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
109Adhesives based on homopolymers or copolymers of conjugated diene hydrocarbons
06Copolymers with styrene
C09J 123/00 2006.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
123Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
C09J 7/38 2018.01
CCHEMISTRY; METALLURGY
09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
7Adhesives in the form of films or foils
30characterised by the adhesive composition
38Pressure-sensitive adhesives
Applicants
  • 東レフィルム加工株式会社 TORAY ADVANCED FILM CO., LTD. [JP]/[JP]
Inventors
  • 馬場祐輔 BABA, Yusuke
  • 町田哲也 MACHIDA, Tetsuya
  • 井上則英 INOUE, Norihide
  • 田邨奈穂子 TAMURA, Naoko
  • 大倉正寿 OHKURA, Masatoshi
  • 辰喜利海 TATSUKI, Toshiumi
Agents
  • 一條力 ICHIJO, Chikara
Priority Data
2019-06679229.03.2019JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) LAYERED FILM
(FR) FILM STRATIFIÉ
(JA) 積層フィルム
Abstract
(EN)
The present invention pertains to a layered film that provides uniform adhesive force with respect to adherend having varying surface profiles, that can be used for a wide variety of uses, and that exhibits excellent adherend dependency. This layered film has a substrate and a resin layer A disposed at least on one-surface side of the substrate, and fulfills the conditions (a), (b) and (c). (a) The resin layer A side has a probe tack maximum value F of 0.2-2.5 g/mm2 at 23°C. (b) When said layered film is subjected to a load removal test by means of nano-indentation at a maximum load of 1 mN at 26°C, the ratio of residual displacement hp (in units of μm) to maximum displacement hm (in units of μm) at the resin layer A side is 0.50-0.90. (c) The resin layer A has a melting point Tm in a range of at least 50°C.
(FR)
L'invention concerne un film stratifié doté d'excellentes propriétés d'attachement à un support, qui présente une force adhésive uniforme vis-à-vis d'un support ayant des profiles de surface différents, et qui permet une mise en œuvre de manière universelle. Plus précisément, l'invention concerne un film stratifié qui possède un substrat, et une couche de résine (A) du côté d'au moins une des faces de celui-ci, et qui satisfait les conditions (a), (b) et (c). (a) La valeur maximale d'adhérence de sonde (F) à 23°C côté couche de résine (A), est supérieure ou égale à 0,2 g/mm et inférieure ou égale à 2,5g/mm. (b) Le rapport (hp/hm) du déplacement résiduel (hp)(en μm)et du déplacement maximal (hm) (en μm) lors d'un test de charge/décharge par nanopénétration selon une charge maximale de 1mN à 26°C côté couche de résine (A), est supérieur ou égal à 0,50 et inférieur ou égal à 0,90. (c) La couche de résine (A) présente un point de fusion (Tm) supérieur ou égal à 50°C.
(JA)
本発明は、異なる表面形状をもつ被着体に対し一様な粘着力を示し、汎用的に利用できる、被着体依存性に優れた積層フィルムである。基材と、その少なくとも一方の面の側に樹脂層Aを有する積層フィルムであって、以下(a)、(b)、(c)を満たす積層フィルムである。 (a)樹脂層A側の23℃におけるプローブタック最大値Fが、0.2g/mm以上、2.5g/mm以下。 (b)樹脂層A側の26℃、最大荷重1mNでナノインデンテーションによる負荷除荷試験を行ったときの残留変位hp(単位μm)と最大変位hm(単位μm)の比(hp/hm)が、0.50以上、0.90以下。 (c)樹脂層Aが、50℃以上に融点Tmを有する。
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