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Laminate

A laminated body and monomer technology, applied in the direction of layered products, synthetic resin layered products, identification devices, etc., can solve the problems of low surface hardness and easy scratches, and achieve the effect of excellent shape stability

Active Publication Date: 2019-10-01
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has the disadvantage of being easily scratched due to the low surface hardness

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0326] 100 parts by mass of a resin composition obtained by mixing 60 parts by mass of an acrylic resin (a1-1) and 40 parts by mass of a copolymer acrylic resin (a2-1), and 100 parts by mass of a polycarbonate resin (b1-1) Each part is supplied to each extruder with exhaust function and filter function, melted and kneaded at a resin temperature of 240-265°C, and co-extruded with a feed block and a T-die at 260°C to form (A layer) / (B layer) laminated structure, and then pass through the first cooling roll set at 100°C, the second cooling roll set at 110°C and the third cooling roll set at 150°C Cooling was performed to obtain a front panel having a total thickness of 0.675 mm and a thickness of each layer of (A layer) / (B layer)=0.075 mm / 0.600 mm.

[0327] Next, the curable resin composition (cf) consisting of 60 parts by mass of the curable resin composition (c-1) and 40 parts by mass of the curable resin composition (c-2) was applied to the front panel using a bar coater. T...

Embodiment 2、3

[0331] As shown in Table 1, in Example 1, the front panel and the front panel / Adhesive sheet / Adhering body of glass.

Embodiment 4

[0333] 100 parts by mass of thermoplastic resin (a3-1) and polycarbonate resin (b1-1) were supplied to each extruder with exhaust function and filter function, respectively, and melted at a resin temperature of 240 to 265°C Kneading and co-extruding through a T-die with a multi-manifold through a T-die at 240°C to form a 2-type, 3-layer laminated structure of (Af layer) / (B layer) / (Ab layer) , and then sequentially cooled by the first cooling roll set at 100°C, the second cooling roll set at 110°C and the third cooling roll set at 120°C to obtain a total thickness of 0.675mm, each layer A front panel with a thickness of (Af layer) / (B layer) / (Ab layer)=0.075mm / 0.525mm / 0.075mm was then coated with a hard coat layer in the same manner as in Example 1 to prepare a front panel / adhesive sheet / Glass fit body.

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Abstract

The present invention provides a novel laminate excellent in shape stability in a high-temperature and high-humidity environment. The laminate includes a front panel and an adhesive sheet. Resin Different thermoplastic resins. The laminate provided by the present invention includes a front panel and an adhesive sheet, wherein the front panel has a layer B mainly composed of polycarbonate resin and a thermoplastic resin different from the polycarbonate resin. In the A layer of the composition, the total thickness of the A layer is 10 μm to 250 μm, and the ratio of the thickness (A) of the A layer to the total thickness (T) of the A layer and the B layer ((A) / (T)) is 0.05 to 0.40, and the internal stress (σ) of the front panel and the adhesive sheet is 0.47 when the laminated body of the front panel and the adhesive sheet is exposed to a temperature of 85°C and a humidity of 85%RH for 120 hours. Below MPa.

Description

technical field [0001] The present invention relates to laminated bodies. Specifically, the present invention relates to a laminate that can be used as a substrate material or a protective material, and can be suitably used as, for example, a surface protection panel of an image display device, a case material for a mobile phone, a smartphone, a tablet device, a wearable terminal, and the like. Background technique [0002] Conventionally, glass has been mainly used as a casing material of an image display device. However, glass is easily broken by impact and is heavy, so research is underway to replace it with resin materials. [0003] Resin materials as such glass substitute materials are mainly required to have impact resistance, surface hardness, and shape stability under high-temperature and high-humidity environments. [0004] Polycarbonate resin sheets are transparent, have excellent impact resistance, and heat resistance, so they can be used for soundproof partitio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/36G09F9/00
CPCB32B27/36G09F9/00
Inventor 野泽大希松井纯谷口浩一郎
Owner MITSUBISHI CHEM CORP