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Method for combining film switch and plastic base by intra-mode injection molding and its finished product

A membrane switch, in-mold injection technology, applied to electrical switches, circuit layouts on support structures, electrical components, etc., can solve problems such as easy separation or falling off, damage to membrane switches or electronic components, and multiple processing procedures. The effect of bond strength

Active Publication Date: 2008-08-20
昆山峰实电子外观应用科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this known method of separately manufacturing the membrane switch and the plastic base not only requires more processing procedures for packaging, transportation and assembly, which is more labor-intensive, but also uses adhesive backing to paste the membrane switch and the plastic base, and the combination is stable. The resistance is also relatively low and it is easy to separate or fall off, reducing the service life of the product
[0005] In addition, it is easier to form a gap between the membrane switch and the plastic base by sticking the membrane switch and the plastic base with adhesive, and it is easier for dust or water to enter to form dirt, and even cause the membrane switch or electronic component damage

Method used

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  • Method for combining film switch and plastic base by intra-mode injection molding and its finished product
  • Method for combining film switch and plastic base by intra-mode injection molding and its finished product
  • Method for combining film switch and plastic base by intra-mode injection molding and its finished product

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Embodiment Construction

[0030] Below in conjunction with accompanying drawing and embodiment the present invention is described in detail:

[0031] refer to figure 1 and figure 2 , in the method of combining the membrane switch and the plastic base by injection molding in the present invention, the combined membrane switch 2 includes a membrane panel 21 , an upper circuit layer 22 , a middle through-hole layer 23 and a lower circuit layer 24 . Wherein, the film panel 21 is a transparent film made of polyethylene terephthalate (hereinafter referred to as PET), but the material of the film panel 21 can also be acrylic (PMMA), polyvinyl chloride (polyvinyl chloride) , PVC), polycarbonate (polycarbonate, PC) and polyethylene (polyethlene, PE) materials, etc., the film panel 21 can be printed on the key text, patterns, patterns or colors that can transmit light. The upper and lower circuit layers 22, 24 are composed of circuits printed with conductive silver paste (or conductive silver and carbon paste...

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Abstract

The invention provides a method for combination with a membrane switch and a plastic base by mold injection molding. The membrane switch is put into the injection molding module for processing mold injection molding, and two manufacture procedures can be finished in a time that molding the plastic base and assembling with the plastic base and the membrane switch, complicated procedures such as packaging, conveying and reassemblying that generated by separation manufacturing of the membrane switch and the plastic base can be reduced, and a membrane switch device product with integrated, waterproof, dustproof functions can be obtained.

Description

【Technical field】 [0001] The invention relates to a combination method and finished product of a membrane switch and a plastic base, in particular to a method for combining a membrane switch with a plastic base through in-mold injection molding and the injection molded product. 【Background technique】 [0002] Due to the advantages of cost reduction, lightweight and convenient appearance, membrane switches are already installed on the operation panels of some electrical appliances on the market, such as washing machines and electronic cooking pots. [0003] When a membrane switch is in use, it is often necessary to assemble electronic components such as liquid crystal display elements or light-emitting elements to form the above-mentioned operating membrane panel. However, the known method of combining a membrane switch with an electronic component is to use adhesive backing or double-sided adhesive to cover the membrane. The switch is pasted on a plastic base, and then the e...

Claims

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Application Information

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IPC IPC(8): H05K7/02H01H11/00H01H13/88B29C45/14B29K55/00B29K69/00B29K23/00
Inventor 廖日兴
Owner 昆山峰实电子外观应用科技有限公司
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