CN201689807U

CN201689807U - Hard-tearing silicone rubber module

Info

Publication number: CN201689807U
Application number: CN2010202169416U
Authority: CN
Inventors: 邹志强
Original assignee: KUNSHAN DINGSHUO ELECTRON CO Ltd
Current assignee: KUNSHAN DINGSHUO ELECTRON CO Ltd
Priority date: 2010-06-07
Filing date: 2010-06-07
Publication date: 2010-12-29
Anticipated expiration: 2020-06-07

Abstract

The utility model discloses a hard-tearing silicone rubber module comprising a silicone rubber layer and a graphic layer covered by a TPU layer. The following steps are carried out: firstly, well printing the graphic layer on a transparent TPU thin film, and spraying surfactant for treatment; and secondly, applying well prepared liquid silicone rubber, and carrying out hot pressing, thereby greatly increasing the planeness of the product. The existence of the TPU layer greatly enhances the strength of the product, and when torn off, the silicone rubber layer can not be damaged after failure adhesion with a plastic surface, thereby reducing the loss caused by poor adhesion; and simultaneously, the protection of the graphic layer by the environment-friendly TPU layer effectively prolongs the service life of the product.

Description

The silica gel module that is difficult for tearing

Technical field

The utility model relates to a kind of silica gel module, particularly a kind of silica gel module that is difficult for tearing with the TPU layer.

Background technology

Figure layer on the common key-press generally is directly to be printed on the layer of silica gel, be attached on the button with combining of keytop by layer of silica gel, yet, owing in the applying process of layer of silica gel and keytop, occur deviation easily, layer of silica gel can be torn when uncovering again, thereby cause scrapping of product; On the other hand; on the figure layer of layer of silica gel and printing without any decorating and protective layer; direct exposed to air and directly contacting during use with the user; because the special environment for use of button; thereby be easy to generate the pollutant in the static absorbed air; contaminated easily in the long-term use, wearing and tearing and corrosion, be restricted useful life.

The utility model content

The purpose of this utility model provides a kind of silica gel module that is difficult for tearing, and has the high and wear-resisting characteristics of intensity.

For achieving the above object, by the following technical solutions:

A kind of silica gel module that is difficult for tearing comprises layer of silica gel and figure layer, is coated with the TPU layer on the described figure layer.

The TPU name is called thermoplastic elastomer (TPE) rubber, a kind of can be under certain temperature the plastic material of deliquescing or change repeatedly, and can keep shape invariance at normal temperatures, have that hardness range is wide, mechanical strength is high, cold resistance is outstanding, good processability, oil resistant, water-fast, anti-mould and good characteristics of regeneration.

Earlier with transparent TPU film stamp on request; Dry after the silk screen printing carrying out on the TPU film, spray interfacial agents; Carry out moulding after the oven dry; The weight of deployed liquid-state silicon gel according to the operation standard regulation is placed on the figure layer, sends into then in the mould through the HTHP moulding; After the depanning the outer carrier of TPU taken off and get product.

The utility model is by printing earlier the figure layer on the transparent TPU film, after the spray interfacial agents is handled, add deployed liquid-state silicon gel carry out hot-forming, thereby improved the evenness of product greatly; Because the existence of TPU layer, also strengthened the intensity of product in the time of the sensitivity that improves product greatly, when fitting, can layer of silica gel not torn because of pasting when uncovering again after bad with plastic rubber surface, minimizing has reduced production cost because of the bad loss that causes of fitting; Simultaneously, environmental protection TPU layer has effectively prolonged useful life of product to the protection of figure layer, has improved the fail safe that product uses.

Description of drawings

According to embodiment and accompanying drawing the utility model is described in further detail below.

Fig. 1 is the schematic cross-section of the described silica gel module that is difficult for tearing of the utility model embodiment.

Among the figure:

1, layer of silica gel; 2, figure layer; 3, TPU layer.

Embodiment

Below in conjunction with accompanying drawing, further specify the utility model by embodiment.

As shown in Figure 1, the silica gel module that is difficult for tearing described in the utility model comprises layer of silica gel 1 and figure layer 2, is coated with TPU layer 3 on the described figure layer 2.

Earlier, obtain TPU layer 3 with transparent TPU film stamp on request; On TPU layer 3, carry out silk screen printing and obtain the 2 back oven dry of figure layer, spray interfacial agents; Carry out moulding after the oven dry; The weight of deployed liquid-state silicon gel according to the operation standard regulation is placed on the figure layer 2, sends into then in the mould through the HTHP moulding; After the depanning the outer carrier of TPU taken off and get product.

Claims

1. a silica gel module that is difficult for tearing comprises layer of silica gel and figure layer, it is characterized in that, is coated with the TPU layer on the described figure layer.