MULTILAYERED FILM AND METHOD FOR MANUFACTURING THE SAME

• US 20160312076A1
• Filed: 12/19/2014
• Published: 10/27/2016
• Est. Priority Date: 12/26/2013
• Status: Abandoned Application

• Current Assignee: ZEON Corporation
• Original Assignee: ZEON Corporation
• Inventors: SHU, Hiroaki
• Application Number:
  US15/104,653
• Publication Number:
  US 20160312076A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B32B 2255/10 on synthetic resin layer or on natural or synthetic rubber layer
• CPC Class Codes: B32B 2255/26 Polymeric coating
• CPC Class Codes: B32B 2264/025 Acrylic resin particles, e.g. polymethyl methacrylate or ethylene-acrylate copolymers
• CPC Class Codes: B32B 2264/10 Inorganic particles
• CPC Class Codes: B32B 2264/102 Oxide or hydroxide
• CPC Class Codes: B32B 2264/104 Oxysalt, e.g. carbonate, sulfate, phosphate or nitrate particles
• CPC Class Codes: B32B 2307/51 Elastic
• CPC Class Codes: B32B 2307/538 Roughness
• CPC Class Codes: B32B 2307/54 Yield strength; Tensile strength
• CPC Class Codes: B32B 2405/00 Adhesive articles, e.g. adhesive tapes labels B32B2519/00
• CPC Class Codes: B32B 2457/20 Displays, e.g. liquid crystal displays, plasma displays
• CPC Class Codes: B32B 2457/202 LCD, i.e. liquid crystal displays
• CPC Class Codes: B32B 2457/204 Plasma displays
• CPC Class Codes: B32B 2457/206 Organic displays, e.g. OLED
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/16 specially treated, e.g. irradiated
• CPC Class Codes: B32B 27/18 characterised by the use of special additives
• CPC Class Codes: B32B 27/26 using curing agents
• CPC Class Codes: B32B 27/306 comprising vinyl acetate or vinyl alcohol (co)polymers
• CPC Class Codes: B32B 27/40 comprising polyurethanes
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: C08J 2323/18 : Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
• CPC Class Codes: C08J 2375/08 : from polyethers
• CPC Class Codes: C08J 2475/08 : from polyethers
• CPC Class Codes: C08J 7/0427 : with only one layer of a composition containing a polymer binder with more layers C08J7/042
• CPC Class Codes: C08J 7/043 : Improving the adhesiveness of the coatings per se, e.g. forming primers adhesives in the form of films or foils characterised by the primer layers between the polymer carriers and the adhesives C09J7/50
• CPC Class Codes: C09J 175/08 : from polyethers
• CPC Class Codes: C09J 2475/00 : Presence of polyurethane
• CPC Class Codes: C09J 7/22 : Plastics; Metallised plastics

Abstract

A multi-layer film, including: a substrate film; and an adhesion facilitating layer provided on the substrate film, wherein the adhesion facilitating layer is a cured product of a composition that contains a polyurethane, a crosslinking agent capable of crosslinking the polyurethane, and a nonvolatile base, and the polyurethane has a tensile elastic modulus of equal to or larger than 1,000 N/mm² and equal to or smaller than 5,000 N/mm².

Claims

1. A multi-layer film, comprising:

a substrate film; and

an adhesion facilitating layer provided on the substrate film, wherein

the adhesion facilitating layer is a cured product of a composition that contains a polyurethane, a crosslinking agent capable of crosslinking the polyurethane, and a nonvolatile base, and

the polyurethane has a tensile elastic modulus of equal to or larger than 1,000 N/mm² and equal to or smaller than 5,000 N/mm².

2. The multi-layer film according to claim 1, wherein the substrate film includes a layer made of a resin containing a polymer having an alicyclic structure.

3. The multi-layer film according to claim 1, wherein the crosslinking agent contains an epoxy compound.

4. The multi-layer film according to claim 1, wherein the composition contains particles.

5. The multi-layer film according to claim 1, wherein the composition contains a wetting agent.

6. The multi-layer film according to claim 1, wherein the polyurethane is a polyether-based polyurethane.

7. A method for producing a multi-layer film, the method comprising:

forming on a substrate film a film of a composition that contains a polyurethane, a crosslinking agent capable of crosslinking the polyurethane, and a nonvolatile base; and

curing the film of the composition, wherein

the polyurethane has a tensile elastic modulus of equal to or larger than 1,000 N/mm² and equal to or smaller than 5,000 N/mm².