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Friction method

A rubbing roller and rubbing treatment technology, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of wrinkles, non-uniform contact between the film and the belt surface, and the inability to completely reduce friction unevenness, etc.

Inactive Publication Date: 2004-06-02
NIPPON PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When rubbing in such an oblique direction, there are the following problems: the conveyed film is stressed in a direction at right angles to the rotation axis of the rubbing roller, and misalignment occurs in the width direction of the film, making the rubbing direction uneven and causing wrinkles.
In this method, a conveyor belt made of rubber is used, but since the surface accuracy of the rubber belt cannot be obtained, there are problems that the film and the belt surface cannot be uniformly contacted, film misalignment cannot be avoided, and friction unevenness cannot be completely reduced.

Method used

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Embodiment

[0033] The present invention will be specifically described below using examples, but the present invention is not limited by these examples.

[0034] Various analytical methods used in Reference Examples and Examples are as follows.

[0035] (1) Determination of logarithmic viscosity of liquid crystal polymer

[0036] Measurement was carried out at 30°C in a mixed solvent of phenol / tetrachloroethane (60 / 40 by weight) using an Ubbelode viscometer.

[0037] (2) Observation of uneven orientation and defects

[0038] Observation of uneven orientation was performed using a BH2 polarizing microscope manufactured by Olympus Optical Co., Ltd.

[0039] (3) Determination of liquid crystal polymer composition

[0040] Dissolve the liquid crystalline polyester in deuterated chloroform, using a 400MHz 1 H-NMR (JNM-GX400 manufactured by JEOL Ltd.) was measured to determine the composition.

reference example 1

[0042] Synthesize the liquid crystal polymer substance (logarithmic viscosity=0.22dl / g, Tg=61 ℃) of formula (1) and (R)-3-methylhexane-1,6-bis containing formula (2) Optically active liquid crystal polymer substance (logarithmic viscosity=0.17dl / g) of alcohol unit.

[0043] The synthesis of these polymer materials is carried out by reacting acid chlorides corresponding to dicarboxylic acid units with diol compounds in the presence of triethylamine in o-dichlorobenzene solvent.

[0044] The liquid crystalline polymer solution-1 was prepared by dissolving 18.1 g of the obtained liquid crystalline polymer of formula (1) and 1.9 g of the liquid crystalline polymer mixture of formula (2) in 80 g of N-methylpyrrolidone.

[0045] Formula 1)

[0046]

[0047] Formula (2)

[0048]

[0049] *Denotes optically active carbon

[0050] [Example]

[0051] Implemented on 60μm thick polyetheretherketone (PEEK) oriented substrate film figure 2 The friction treatment method shown. T...

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Abstract

To provide a method for stably rubbing a long film such as an alignment substrate film without producing alignment unevenness over a long period of time .The film is conveyed with a conveyer belt with a metal surface consisting of a material such as mirror finished copper, steel and copper and rubbing treated on the conveyer belt. In this case, a grade of the metal finish is kept 0.4S or higher to ensure adhesion to the film and tension of the conveyer belt is kept 2-20 kgf / mm2to prevent a film surface from loosening.(C)2004,JPO.

Description

technical field [0001] The present invention relates to a method of continuously performing rubbing treatment on the surface of a belt-shaped film for the production of optical elements and the like. Background technique [0002] When manufacturing a liquid crystal display device or the like, a substrate film in which the surface of the film is rubbed in one direction is used. Substrate films are widely used for alignment treatment of liquid crystal molecules in liquid crystal cells (see, for example, JP-A-6-110059). In addition, a plate for improving the viewing angle, a retardation plate, a color compensation plate, etc., are known by directly forming a liquid crystalline polymer layer on a substrate film, or by transferring the liquid crystalline polymer layer onto a light-transmitting substrate film. A method for manufacturing an optical element (for example, refer to JP-A No. 7-113993). When the rubbing process is performed on the substrate film, it is generally carri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1337
Inventor 清原稔和平井知生福田靖
Owner NIPPON PETROCHEMICAL CO LTD