Optical polyester film and method of manufacture thereof

An optical polyester film, polyurethane resin technology, applied in polyurea/polyurethane coatings, flat products, other household appliances, etc., can solve the problems of poor optical performance, film adhesion can not meet the needs of optical functional films, etc. Smoothness and blocking resistance, excellent adhesion and high transparency, the effect of improving high temperature and high humidity resistance

Active Publication Date: 2016-07-13
HEFEI LUCKY SCI & TECH IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing disclosed polyester film primer formula may improve one or both of the optical properties, anti-blocking and adhesion properties of the film: when the anti-blocking property of the film is improved, the optical properties are poor; At the same time, the optical properties and anti-blocking properties are improved, and the adhesion of the film cannot meet the needs of optical functional films.

Method used

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  • Optical polyester film and method of manufacture thereof
  • Optical polyester film and method of manufacture thereof
  • Optical polyester film and method of manufacture thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Preparation of primer coating solution (Ⅰ)

[0043]

[0044] Get 12.6g water-based UV-curable polyurethane UCECOAT7655 (does not contain carboxylic acid group, solid content is 35%, allnex Resin Co., Ltd.), 8.4g oxazoline crosslinking agent WS-700 (solid content is 25%, Nippon Shokubai Co., Ltd. company), 1.6g anti-blocking particles AB-S14 (solid content is 29.9%, Japan Xiai Chemical Co., Ltd.), 10g isopropanol, 77.4g deionized water, uniformly dispersed through a high-shear emulsifier to obtain a solid content of 7% base coat coating solution.

[0045] Preparation of Optical Polyester Film

[0046] The polyethylene terephthalate polyester chip is melt-extruded; the melt is cast to the casting roll and cooled to become a non-oriented cast slab, and then longitudinally stretched at a longitudinal stretching ratio of 3.5 times; then Coat the primer coating solution prepared above on one side of the longitudinal stretch sheet; stretch the longitudinal stretch sheet c...

Embodiment 2

[0048] Change the undercoat coating solution (I) in Example 1 to other than the undercoat coating solution (II), obtain the optical polyester film in the same way as in Example 1, and measure its performance (see Table 1) .

[0049] Preparation of primer coating solution (Ⅱ)

[0050]

Embodiment 3

[0052] Change the undercoat coating solution (I) in Example 1 to other than the undercoat coating solution (Ⅲ), obtain the optical polyester film in the same way as in Example 1, and measure its performance (see Table 1) .

[0053] Preparation of primer coating solution (Ⅲ)

[0054]

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Abstract

The invention discloses an optical polyester film and a method of manufacture thereof.In the optical polyester film, at least one side of a biaxially stretched basic film is coated with a bottom coating, the bottom coating is made from the components according to percent by weight: 63-96% of water-based ultraviolet-cured polyurethane resin free of carboxylic acid, 3-30% of oxazoline cross-linking agent, and 1-7% of nano-scale anti-blocking particles that are 80 to 200 nm in particle size.The optical polyester film has excellent adhesion and high transparency, has good bonding resistance and is applicable to high-end film material fields such as LCD (liquid crystal display) display device field and high-end IMD (in-mod decoration) processing.

Description

technical field [0001] The invention relates to the field of optical polyester films, in particular to an optical polyester film and a manufacturing method thereof. Background technique [0002] Biaxially oriented optical polyester film is usually used as the base of various optical functional films used in liquid crystal displays (LCD) due to its good dimensional stability, chemical resistance, high transparency and good processability compared to other plastic films. material. And it has good thermal stability, printability, impact resistance, scratch resistance and good chemical stability. It is used in the field of high-end IMD film interior decoration processing, and its application range in home appliances and decorative substrates is becoming more and more extensive. [0003] When the optical polyester film is used for the above purposes, it is required to have high transparency and good reworkability. At the same time, at least one layer of optical functional layer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C09D175/04C09D7/12B29C55/14B29L7/00
CPCB29C48/0018B29C55/143B29L2007/002C08J7/04C08K5/353C09D7/63C09D175/04
Inventor 孙月熊跃斌李超郑云霞张锐姚晔刘洋
Owner HEFEI LUCKY SCI & TECH IND
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