Polarizing film stretching device and polarizing film manufacturing method

A stretching device and polarizing film technology, applied in optics, polarizing elements, nonlinear optics, etc., can solve the problems of wide film width, poor quality of the original polarizer film, and inability to achieve wet transverse stretching.

Active Publication Date: 2021-04-23
SHENZHEN SUNNYPOL OPTOELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a stretching device for a polarizing film to solve the film width required for the longitudinal extension of the polarizing film in the prior art Wider width and technical problems ...

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  • Polarizing film stretching device and polarizing film manufacturing method
  • Polarizing film stretching device and polarizing film manufacturing method
  • Polarizing film stretching device and polarizing film manufacturing method

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Embodiment Construction

[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0043]It should be noted that the terms "comprising" and "having" used in the present invention and any variations thereof are intended to cover a non-exclusive inclusion, for example, a process, method, system, product or process that includes a series of steps or units. The apparatus is not necessarily limited to those steps or units explicitly ...

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Abstract

The invention provides a polarizing film stretching device and a polarizing film manufacturing method, the polarizing film stretching device comprises a solution tank, a driving member, a conveying member and a plurality of clamps, the solution tank is used for accommodating a solution, the driving member is used for driving the conveying member to enable the conveying member to convey the polarizing film in the direction perpendicular to the stretching direction of the polarizing film, the conveying member comprises a first conveying member body and a second conveying member body, and the distance between at least part of the first conveying member body and the second conveying member body is gradually increased in the advancing path direction of the polarizing film. In the stretching process of the polaroid, the driving member, the conveying member and the fixing part of the clamp are all located above the liquid level of the solution in the solution tank, the stretching device achieves transverse stretching of the polaroid in the solution, the stretching uniformity of the polaroid is good, and the polaroid can be stretched more evenly. According to the manufacturing method of the polarizing film, the polarizing film is transversely stretched in a solution after being dyed, the dyeing effect of the polarizing film is good, and the transmittance and the polarization degree of the polarizing film are high.

Description

technical field [0001] The invention belongs to the technical field of polarizer manufacturing, and more specifically relates to a polarizing film stretching device and a manufacturing method of the polarizing film. Background technique [0002] The full name of polarizer is polarizer. The imaging of liquid crystal display must rely on polarized light. All LCD screens have two front and rear polarizers attached to the liquid crystal glass to form a liquid crystal sheet with a total thickness of about 1mm. The basic structure of the polarizer includes: the middle polyvinyl alcohol (PVA), two layers of triacetate cellulose (TAC), pressure-sensitive adhesive (PSA film), release film (Release film) and protective film (Protective film). Among them, the PVA layer plays a polarizing role, and the PVA needs to be stretched during the production process of the polarizer. Existing PVA stretching includes longitudinal stretching and transverse stretching. [0003] PVA longitudinal s...

Claims

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Application Information

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IPC IPC(8): G02F1/13G02F1/1335G02B5/30
Inventor 霍丙忠黄邓军钟铁涛孙琴李祖华张建军
Owner SHENZHEN SUNNYPOL OPTOELECTRONICS
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