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Composite film panel

A composite film and panel technology, which is applied in the field of button panels, can solve problems such as poor quality stability, insufficient transparency, and complicated manufacturing processes, and achieve the effects of convenient and diverse combinations, good flexibility, and high bonding strength

Inactive Publication Date: 2011-08-31
NANTONG MEMTECH ELECTRONIC INDUSTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The patent application number is CN200710090648.2, which discloses a method for making a thin button panel. A mold and colloidal materials are used to make a multi-layer panel with two layers of carrier, background color layer, font color layer, and reflective layer respectively. It has good elasticity, but the production process is complicated, the production efficiency is low, the quality stability is not good, the thickness is not thin enough, and the transparency is not high enough

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Select the above-mentioned TPU film printed with the key character pattern 2 as the uppermost polymer film 1, and the PC film printed with the key trademark graphic pattern 4 as the lowermost polymer film 5, and use polyurethane glue to bond the two layers of polymer film. The films are bonded together to form a composite film with a total thickness of 0.1 mm. Then according to the specification requirements of the button, it is cut into composite membrane panels of corresponding size.

Embodiment 2

[0022] Embodiment 2: as shown in the accompanying drawing, select the above-mentioned PET film that is not printed with any pattern for use as the uppermost polymer film 1, and the PP film with the button character pattern 2 printed with a three-dimensional display effect is used as the middle layer polymer film 3, The PET film printed with the button trademark graphic pattern 4 is used as the lowermost polymer film 5, and the thickness of the lowermost polymer film 5 is greater than that of other layers. The three layers of polymer films are bonded together with epoxy glue to form a composite film with a total thickness of 1.5 mm, and the light guide plate 6 is bonded to the bottom of the polymer film at the bottom. Then according to the specification requirements of the buttons, it is cut into composite film panels for supporting the buttons.

Embodiment 3

[0023] Embodiment 3: as shown in the accompanying drawing, select the above-mentioned PVC film that does not have any pattern to be printed as the uppermost polymer film 1, the PET film of the button character pattern 2 is used as the middle layer polymer film 3, and the button trademark graphic pattern is printed 4 and the PMMA film with graphic patterns of shading effect is used as the bottom polymer film 5, and other polymer films printed with patterns can also be selected for use to do other more layers. Three or more layers of polymer films are bonded together by UV light-curing polyurethane glue to form a composite film with a total thickness of 3mm. The lowermost polymer film is bonded with a luminescent sheet 6 below. Then according to the specification requirements of the buttons, it is cut into composite film panels for supporting the buttons.

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Abstract

The invention provides a composite film panel which is composited by adhering two or more layers of polymer films; and the total thickness is 0.05-3mm. The polymer films are transparent films made from TPU (Thermoplastic Polyurethane), PC (Polycarbonate), PET (Polyethylene Terephthalate), PP (Polypropylene), PVC (Polyvinyl Chloride), PMMA (Polymethyl Methacrylate) and the like; character patterns or image patterns or both the character patterns and the image patterns are printed on each layer of polymer film and the adhesive for the compositing includes epoxy glue, modified epoxy glue, polyurethane glue, modified polyurethane glue, acrylate glue and the like. The upper surface of the uppermost layer of polymer film can be free of the patterns and the lower surface of the lowermost layer of polymer film can be adhered with a light guide plate or a cold light plate. The composite film panel has good flexibility and high bonding strength; different patterns can be printed on different layers of films; the combination of the films and the patterns is convenient and diversified; and the patterns on the layers of films do not contact and do not cause abrasion. The composite film is small in thickness, good in light transmittance and easy for slitting and can be used for making the thin key panels of cell phones, computers and the like.

Description

technical field [0001] The invention relates to a button panel, in particular to a button panel composed of multi-layer films and multiple patterns. Background technique [0002] Usually, the button panels of mobile phones, computers, etc. are made by injection molding, drop molding, molding, etc., and are mostly single-layer or single material, and then printed text or graphics on the upper surface. These products are single in variety, less in pattern change, not attractive in appearance, and the buttons are thicker, so the application places are limited. [0003] There are membrane switch products on the market, which combine the printed membrane with the electrical switch, which has a certain aesthetic and safety effect. However, it only has one layer of film combined with the switch, the pattern changes less, lacks three-dimensional effect, and the pattern is easy to wear. [0004] The patent application No. 200810301519.8 discloses a button panel structure, which is ...

Claims

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Application Information

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IPC IPC(8): H01H13/14H01H13/83B32B27/00B32B7/12
Inventor 张劲松韩辉升董亚东
Owner NANTONG MEMTECH ELECTRONIC INDUSTRY CO LTD
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