Protective film for optical film
An optical film and protective film technology, applied in optics, optical components, nonlinear optics, etc., can solve problems such as contamination, residual glue, high static electricity, etc., achieve the effect of environmental protection and energy saving process, and reduce manufacturing cost
Active Publication Date: 2016-03-16
麦建进 +1
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Problems solved by technology
The protective film used in the current optical prism film is mostly made of polypropylene biaxially stretched film (BOPPFilm), and a layer of acrylic (PMMA) glue or thermoplastic (Thermalplastic) is coated on the stretched film. Adhesive, because the adhesive layer of the coating is low molecular weight, so the range of adhesive strength is wide, and it is widely used. However, when this kind of protective film is manufactured, it is necessary to use organic solvents to coat the adhesive layer to the non-adhesive layer. The manufacturing process is not an environmentally friendly process, which will produce peculiar smell, and must be baked twice to remove the organic solvent, thus causing an increase in cost. In addition, it is easy to cause residual glue and stains on the microstructure surface of the optical film, and when tearing the film It will also generate high static electricity, so that when the optical film is applied to the backlight module, the image quality will be poor, resulting in an adverse effect of increasing the defect rate.
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[0018] First, see figure 1 As shown, the protective film 1 of the present invention at least includes a non-adhesive layer 11 and an adhesive layer 12 . The non-adhesive layer 11 includes a surface layer 111 and an intermediate layer 112, wherein the material of the non-adhesive layer 11 is composed of two or more polyolefin polymer materials, and the molecular weight of this polyolefin polymer material is between Between 1,000 and 100,000, and the ratio ranges from 1:1 to 1:100. The material of the adhesive layer 12 is composed of a polyolefin polymer material and a thermoplastic rubber material. The molecular weight of the polyolefin polymer material is between 10,000-100,000, and the molecular weight of the thermoplastic material is between 50,000-200,000. Among them, the thermoplastic material contains cyclobenzene polyolefin polymer material, and the content of the cyclobenzene polyolefin polymer material accounts for 5%-45% in the thermoplastic rubber material. After t...
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Abstract
The invention discloses a protection film of an optical membrane, which is used in a backlight module of a planar liquid crystal display. The protection film is mainly provided with a non-adhesion layer and an adhesion layer; both the non-adhesion layer and the adhesion layer are made of more than two polyolefin materials, polyolefin elastomers or vinyl acetate materials; and the materials are extruded via an extruder after dosing. After being shaped, the protection film is immediately cooled and tempered so that the stability of the size of the protection film can be ensured at different temperatures.
Description
technical field [0001] The invention relates to a protective film, especially the protective film structure used in the optical film widely used in the backlight module of the flat liquid crystal display. Background technique [0002] According to the existing optical film, electronic parts transportation or processing, the parts are usually packaged in sheets, and in order to prevent the parts from being scratched or polluted during transportation, the protective film on the surface is placed on the optical film It is widely used in the field of electronic parts and electronic parts. In the manufacturing process, the optical film must be used with a protective film that is clean enough to reach the optical grade. The surface of the optical film is provided with many optical microstructures. These microstructures can effectively increase the luminance of the liquid crystal display. During the manufacturing process of the optical film, a protective film with a clean level of ...
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IPC IPC(8): G02B1/14G02F1/13357
Inventor 麦建进黄季仁王韡阊林升勋吴嘉哲
Owner 麦建进