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

Method for manufacturing laminated resin plate

A manufacturing method and technology of resin boards, applied in the field of laminated resin boards, can solve problems such as easy scratches

Inactive Publication Date: 2009-10-28
SUMITOMO CHEM CO LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the above-mentioned light-diffusing plate has a problem that it is easily scratched because the exposed surface is a polycarbonate resin surface.

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
  • Method for manufacturing laminated resin plate
  • Method for manufacturing laminated resin plate
  • Method for manufacturing laminated resin plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] By adding methyl methacrylate-styrene copolymer (content of methyl methacrylate unit: about 20% by mass, content of styrene unit: about 80% by mass) ("MS 200" manufactured by Nippon Steel Chemical Co., Ltd.) 78.55 parts by mass, acrylic polymer particles (cross-linked polymer particles) ("Sumpex XC1A" manufactured by Sumitomo Chemical Co., Ltd., volume average particle diameter is about 25 μm) 20.00 parts by mass, Adecastab LA31 (benzotriazole-based ultraviolet absorber, ADEKA Co., Ltd.) 1.00 parts by mass, Sumilaiza-GP (processing stabilizer, manufactured by Sumitomo Chemical Co., Ltd.) 0.20 parts by mass, glycerol aliphatic ester D (molding processing agent, manufactured by NOF Corporation) 0.25 parts by mass dry-mixed to obtain a surface layer of resin composition A.

[0063] The above-mentioned resin composition A for forming the surface layer was supplied to a second extruder with a screw diameter of 20 mm, melt-kneaded at 250° C., and then supplied to a multi-mani...

Embodiment 2～4

[0067] The content ratio of each component and the thickness of each layer in the resin composition (for the base layer) supplied to the first extruder were set to the conditions shown in Table 1, respectively, and a light was produced in the same manner as in Example 1. diffuser plate.

Embodiment 5

[0069] By adding 78.55 parts by mass of polystyrene (styrene unit content: 100% by mass) ("HRM40" manufactured by Toyo Schinen Co., Ltd.), acrylic polymer particles (cross-linked polymer particles) ("Sumipex XC1A" manufactured by Sumitomo Chemical Co., Ltd.), Volume average particle diameter of about 25 μm) 20.00 parts by mass, Adecastab LA31 (benzotriazole ultraviolet absorber, manufactured by ADEKA Co., Ltd.) 0.25 parts by mass of aliphatic ester D (molding agent, manufactured by NOF Corporation) was dry-blended to obtain a resin composition B for forming a surface layer.

[0070] The above-mentioned resin composition B for forming a surface layer was supplied to a second extruder having a screw diameter of 20 mm, melt-kneaded at 250° C., and then supplied to a multi-manifold die.

[0071]On the other hand, 100 parts by mass of polycarbonate resin ("Kariba-PC200-30" manufactured by Sumitomo Dow Co., Ltd.), 1.0 parts by mass of the above-mentioned resin composition B for form...

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

No PUM Login to View More

Abstract

The implementation of the manufacturing method in the invention is characterized in comprising the following steps: laminating styrene resins, which contain more than 70wt% of styrene monomer units, on at least one surface of the base containing polycarbonate resin to obtain a laminated plate; cutting off at least one part of the marginal portion of the laminated plate, separating out as scraps to obtain the scraps; mixing the scraps into polycarbonate resin to obtain a resin composition; and laminating styrene resin surface layer, which contains more than 70wt% of styrene monomer, on to at least one surface of a base containing the resin composition.

Description

technical field [0001] The present invention relates to a method for producing a laminated resin board by recycling scraps (end materials) generated during production, which can produce a laminated resin board excellent in impact resistance and scratch resistance while sufficiently suppressing coloration. Background technique [0002] As a liquid crystal display device, for example, a configuration in which a surface light source device is arranged as a backlight on the back side of a liquid crystal panel (image display unit) having a liquid crystal cell is known. As the surface light source device for the above-mentioned backlight, a surface light source device having a structure in which a plurality of light sources are arranged in a light box (casing) and a light diffusion plate is arranged in front of the light sources is known. [0003] As the above-mentioned light-diffusing plate, it is required that it is not damaged by contact during transportation and assembly, and ...

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): B32B27/30G02B5/02
CPCB32B27/08B32B27/30B32B27/365B32B2369/00
Inventor 滨松丰博坂本隆
Owner SUMITOMO CHEM CO LTD