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Method For Manufacturing Foldable Hard Coating Film

A manufacturing method, hard coating technology, applied in the direction of chemical instruments and methods, flat products, applications, etc.

Active Publication Date: 2016-11-02
DONGWOO FINE CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The present applicant has completed the present invention after conducting multi-angle research on a method for producing a high-hardness folding hard coat film using a composition for forming a hard coat layer. In this invention, the composition for forming a hard coat layer is cured in two stages The process controls the thickness of the hard coat layer in the folded area, so that the problem of easy folding can be ensured. Under the condition that there is no material change between the folded area and the non-folded area, the obtained film has better hardness and abrasion resistance. damage, and no cracks occurred in the brutal bending test

Method used

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  • Method For Manufacturing Foldable Hard Coating Film
  • Method For Manufacturing Foldable Hard Coating Film
  • Method For Manufacturing Foldable Hard Coating Film

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0116] Production Example 1: Production of a composition for forming a high-hardness coating layer

[0117] Stir with a stirrer 10 parts by weight of urethane acrylate (decafunctional, manufactured by MIWON SPECIALTY CHEMICAL, SC2153), 10 parts by weight of pentaerythritol triacrylate and an average functional base of 6.5 organic acrylates and 50 parts by weight of nano-silica sol ( 12nm, fixed matter 40%), 20 parts by weight of methyl ethyl ketone, 7 parts by weight of propylene glycol monomethyl ether, 2.5 parts by weight of photoinitiator (manufactured by BASF JAPAN, I-184), 0.5 parts by weight of fluid A leveling agent (manufactured by BYK Chemical Co., Ltd., BYK3570) was filtered through a filter made of PP to produce a composition for forming a high-hardness coating layer.

Embodiment 1～4

[0118] Examples 1-4: Manufacture of folded hard coat film

Embodiment 1

[0120] The composition for forming a high-hardness coating layer produced according to Production Example 1 above was coated on one side of a triacetyl cellulose film (80 μm) as a base film so that the coating layer had a thickness of 20 μm.

[0121] Afterwards, after drying at 100°C for 1 minute, use a 500mJ / cm 2 The first UV curing is carried out with a UV lamp, so that a part of the coated coating layer-forming composition is not cured.

[0122] Afterwards, the masking unit is removed, and the uncured part is cured by a second UV curing method to manufacture high-hardness folding hard coating films with different surface thicknesses.

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Abstract

The invention relates to a method for manufacturing a foldable hard coating film. Particularly, the invention provides a method for manufacturing the foldable hard coating film which comprises a process for carrying out a first curing of a composition for forming a hard coating, and a process for carrying out a second curing for curing the entire body. The method for manufacturing a foldable hard coating film does not need complex thickness design and control, only a curing process is used for manufacturing the foldable hard coating film of different thicknesses and high hardness, and the film can be used as a glass substitute good of a foldable display or a high-hardness film.

Description

【Technical field】 [0001] The invention relates to a manufacturing method for forming a folded hard coating film having hard coating layers with different thicknesses by controlling the curing process. 【Background technique】 [0002] In the near future, curved smartphones with only a curved structure will gradually be eliminated, and mobile devices that can be bent and folded will gradually enter the market. [0003] The above-mentioned device is a flexible display proposed after certain improvements are made to the curved displays that are currently commercially available. The flexible display technology will develop from a bendable curved form (curved) to a bendable form (bendable) or a foldable form (foldable), and finally to a rollable form (rollable). Or a scalable form of stretchable (stretchable) development. [0004] When the display is designed to be foldable, it can be designed to be a tablet when unfolded and a smartphone when folded, so that various displays wit...

Claims

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Application Information

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IPC IPC(8): B29D7/01
CPCB29D7/01B32B27/08C08J5/18C08J7/18C08J2333/12C08L33/12C08J7/0427C08J7/046
Inventor 林巨山李正银
Owner DONGWOO FINE CHEM CO LTD
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