Unlock instant, AI-driven research and patent intelligence for your innovation.

Layered body and method for manufacturing layered body

A manufacturing method, laminated body technology, applied in chemical instruments and methods, film/sheet without carrier, lamination, etc., can solve problems such as bubbles in the adhesive layer, optical performance effects, etc., and achieve excellent degassing resistance Effect

Active Publication Date: 2021-07-23
OJI HLDG CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, resin plates such as polycarbonate substrates are often used as optical members because of their excellent transparency and heat resistance. However, when an adhesive sheet is attached to a resin plate and placed in a high-temperature environment, the adhesive layer will generate air bubbles that may affect optical performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Layered body and method for manufacturing layered body
  • Layered body and method for manufacturing layered body
  • Layered body and method for manufacturing layered body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0164] [Made of laminate (A-1G)]

[0165]

[0166] According to 2-ethylhexyl acrylic (2EHA), ethyl acrylate (EA) 40% by mass, acrylate 4-hydroxybutylate (4HbA) 2% by mass, N, N-dimethylacrylamide (DMAA) The 13% by mass is mixed, and 2,2'-azo bis (2,4-dimethylanitrile) as a radical polymerization initiator is dissolved in a solution. The solution was heated to 60 ° C for random copolymer to obtain a crosslinkable acrylic copolymer (A-1). The weight average molecular weight of the crosslinkable acrylic copolymer (A-1) is 540,000.

[0167] It should be noted that the weight average molecular weight is determined by gel permeation chromatography (GPC), and the value is obtained based on the polystyrene reference.

[0168] The determination conditions for gel permeation chromatography (GPC) are as follows.

[0169] Solvent: tetrahydrofuran

[0170] Columns: Shodex KF801, KF803L, KF800L, KF800D (use 4 sho and electrical plant connections)

[0171] Column temperature: 40 ° C

[0172] Sa...

Embodiment 2

[0185]

[0186] The COSMOSHINE A4300 (PET) manufactured by the 2nd attached material is a thickness of 100 μm, and an ultraviolet ray is irradiated from the PET side, except that the laminated body (A-1P) is made in the same manner as in Example 1.

Embodiment 3

[0188]

[0189] Take the n-butyl acrylate (BA) 75% by mass, 2-hydroxyethyl acrylate (2HeA) 25% by mass, will be 2,2'-azo double (2,4-dimethyl) as a radical polymerization initiator Basedlonitrile is dissolved in a solution. The solution was heated to 60 ° C for random copolymer, thereby obtaining a crosslinkable acrylic copolymer (A-2). The weight average molecular weight of the crosslinkable acrylic copolymer (A-2) is 510,000.

[0190]

[0191] 0.1 parts by mass of toluene diisocyanate compound (Dong Cao Co., Ltd., Coronate L55), is added as a crosslinking agent, and Coronate L55, which is a single functional monomer. Ester (LA) 30 parts by mass, as a polyfunctional monomer, bisphenol A ethylene oxide modified diprown acrylate (East Asia Synthetic Co., Ltd., Aronix M211B), as a polymerization initiator double (2, 4,6-trimethylbenzoyl) phenylphosphine (BASF Japanese Co., Ltd., Irgacure819) 1.12 parts by mass, adding ethyl acetate as a solvent to a solid component concentration t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The problem to be solved by the present invention is to provide a layered body that can exhibit outstanding anti-outgassing properties with respect to any form of occurrence of outgassing. The present invention relates to a layered body, formed by layering a first adherend, an adhesive layer, and a second adherend in that order, wherein, the conditions Ft > Fv, Fi > Fv, and Fb > Fv are fulfilled if: the saturation water vapor pressure at 85 DEG C is Fv; the interface adhesion of the first adherend and the adhesive layer at 85 DEG C, measured by a measurement method (a), is Ft; the shear storage elastic modulus (G') of the adhesive layer at 85 DEG C, measured by a measurement method (b), is Fi; and the interface adhesion of the second adherend and the adhesive layer at 85 DEG C, measured by a measurement method (c), is Fb.

Description

Technical field [0001] The present invention relates to a method for producing a laminated body and the laminated body. Background technique [0002] Recently, in various fields, and liquid crystal display (LCD) display an input device like a touch panel display device used in combination used more widely. In these display devices, manufacturing, and other input device, a transparent pressure-sensitive adhesive sheet bonded in the use of the optical member, but also a transparent pressure-sensitive adhesive sheet bonded to the display device and the input device. [0003] For the pressure-sensitive adhesive sheet used in such applications, in addition to various characteristics required adhesive properties further. For example, a transparent polycarbonate base resin plate and the like, is excellent in heat resistance, it is often used as an optical member, but when the resin sheet bonded to the adhesive sheet and placed under a high temperature environment, the adhesive layer bub...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B32B17/10B32B27/36C09J4/02C09J11/06C09J133/00C09J7/10C09J7/38B32B7/12
CPCB32B7/12B32B17/10B32B27/36C09J7/38C09J7/10C09J11/06C09J133/00B32B27/365B32B37/12C09J4/00C09J151/00C08F265/06C08F220/18C08F2/50B32B2037/1253C08F220/1812
Inventor 山本真之山口贵迪
Owner OJI HLDG CORP