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

Laminated resin plate for coating push switch

A resin body and switch technology, applied in electrical switches, electrical components, circuits, etc., can solve problems such as easy cracking, and achieve the effect of not easy to crack, not easy to scratch, and effectively covered

Inactive Publication Date: 2009-05-06
SUMITOMO CHEM CO LTD
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As disclosed in Patent Document 1, if an acrylic film is used as a covering member of a push button switch, it is advantageous in that it is less likely to be scratched, but there is a problem that it is easily broken when a machine is dropped or an object hits it.

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0032] Examples of the present invention are shown below, but the present invention is not limited to these examples. The configuration and evaluation method of the extruder in each example are as follows.

[0033] [Configuration of Extrusion Device]

[0034] Extruder (1): 65 mm in screw diameter, uniaxial, with ventilation holes (manufactured by Toshiba Machine Co., Ltd.).

[0035] Extruder (2): 45 mm in screw diameter, uniaxial, with ventilation holes (manufactured by Hitachi Zosen Co., Ltd.).

[0036] Feed block: Two types of three-layer and two types of two-layer distribution (manufactured by Hitachi Zosen).

[0037] Die: T-shaped die, lip width 1400mm, lip interval 1mm (manufactured by Hitachi Zosen).

[0038] Roller: three polishing rollers, horizontal type.

[0039] [Evaluation method]

[0040] A thermoforming machine (model: CUPF-1015-PWB) manufactured by Busch Vacuum Co., Ltd. is provided with an opening of 180×250 mm, and a resin plate cut into 220×310 mm (resin...

reference example 1

[0041] Reference example 1 (manufacture of rubber-like polymer)

[0042] According to the method described in Japanese Patent Publication No. 55-27576, an acrylic multilayer elastomer having a three-layer structure was produced. That is, 1700 g of ion-exchanged water, 0.7 g of sodium carbonate, and 0.3 g of sodium persulfate were charged into a glass reaction vessel with an inner volume of 5 L, and after stirring under nitrogen flow, sodium dioctyl sulfosuccinate (Kao PELEX OT-P manufactured by the company; anionic surfactant) 4.46g, ion-exchanged water 150g, methyl methacrylate 150g and allyl methacrylate 0.3g, the temperature was raised to 75°C, and stirring was continued for 150 minutes. Next, a mixture of 689 g of butyl acrylate, 162 g of styrene, and 17 g of allyl methacrylate, 0.85 g of sodium persulfate, 7.4 g of sodium dioctylsulfosuccinate (same as above) and The mixture of 50 g of ion-exchanged water was further continued for 90 minutes. Then, a mixture of 326 g of...

Embodiment 1～4

[0044] Polycarbonate resin [Caliber 301-10 manufactured by Sumitomo Dow Co., Ltd. =98 / 2 (weight ratio) copolymer] heating and melt kneading, laminated and integrated with the feed block, directly extruded from the T-shaped die in a molten state, cooled with a polishing roll, and obtained Structural two-layer resin board. Table 1 shows the evaluation results of the obtained boards.

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 present invention provides a laminated resin body for coating push-button switch, a push-button coating component and a manufacturing method thereof. The present invention provides a coating component of push-button switch which is not easily cut or rupture. The laminated resin body which is obtained through stacking acrylic resin layer on at least one surface of polycarbonate resin layer is used as the coating component of push-button switch, wherein the thickness of polycarbonate resin layer is above 50146457700f the whole thickness. The polycarbonate resin layer and acrylic resin layer can be stacked through coextrusion molding. The acrylic resin layer can comprises methacrylic acid resin and rubber-like polymer.

Description

technical field [0001] The present invention relates to a laminated resin body for covering a button switch. Background technique [0002] Such as push button switches, tactile button switches, and thin-shaped push button switches used in industrial or medical precision equipment such as mobile phones, digital cameras, electronic notebooks, remote controllers, and personal computer keyboards. With the continuous development of technology, the result is that it continues to develop in the direction of small and thin. If the push button switch becomes smaller, it becomes difficult to adjust the clearance of the movable part, and it is easy to cause problems that the push button itself is deformed by continuous use, or enters the inside of the machine. In addition, recently, in order to make waterproof specifications, research has been carried out on reducing the gap between the button and the body as much as possible, or applying rubber to the inside of the machine body. Unf...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01H13/14H01H11/00
CPCH01H13/04H01H13/14H01H13/704H01H13/705
Inventor 前川智博小山浩士
Owner SUMITOMO CHEM CO LTD