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High-strength transparent plastic sheet able to be used as glass substrate substitute, and production method therefor

A transparent plastic sheet, high-strength technology, applied in the direction of chemical instruments and methods, applications, household appliances, etc., can solve the problems of low bending elastic rate, external window sagging, etc., achieve strong impact resistance, light manufacturing cost, good Effects of mechanical and optical properties

Inactive Publication Date: 2014-08-13
LG HAUSYS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in this case, there is also the problem of the outer window sagging inward when pressed with a finger due to the lower bending modulus

Method used

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  • High-strength transparent plastic sheet able to be used as glass substrate substitute, and production method therefor
  • High-strength transparent plastic sheet able to be used as glass substrate substitute, and production method therefor
  • High-strength transparent plastic sheet able to be used as glass substrate substitute, and production method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] On both sides of a polyethylene terephthalate film with a thickness of 50 μm, a polyurethane-based adhesive with a thickness of 2 μm after drying by the gravure coating method was applied, and an additional extrusion process was applied on the Both sides of the polyethylene terephthalate film are co-extruded with an acrylic copolymer heat-resistant resin with a glass transition temperature of 125 degrees by T-die method. This coextruded overall thickness was prepared to be 1 mm.

[0065] Afterwards, the two sides of the co-extruded sheet are respectively coated with a polyurethane polymer with a thickness of 5 μm as a hard coat, and after curing at a temperature of 50°C for 15 minutes, it is cut into 3cm (width)*3cm (height)*1mm (thickness), and prepared a transparent plastic sheet test piece.

Embodiment 2

[0067] A transparent plastic sheet test piece was prepared in the same manner as in Example 1 except that a polyethylene terephthalate film was used instead of the polyethylene terephthalate film.

Embodiment 3

[0069] In addition to using a composite film comprising 60% by weight of polyethylene terephthalate and 40% by weight of a cycloolefin polymer instead of the polyethylene terephthalate film, the same method as in Example 1 was used. Methods A transparent plastic test piece was prepared.

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Abstract

The high-strength transparent plastic sheet according to the present invention comprises: a transparent substrate layer; first and second adhesive layers respectively formed on both surfaces of the transparent substrate layer; first and second heat-resistant resin layers respectively formed on the outside surfaces of the first and second adhesive layers; and first and second coating layers respectively formed on the outside surfaces of the first and second heat-resistant resin layers.

Description

technical field [0001] The present invention relates to a high-strength transparent plastic sheet and a preparation method thereof, in more detail, to a high-strength transparent plastic sheet suitable for the outer window of a portable display device and a preparation method thereof. Background technique [0002] Most of the transparent glass substrates used in the outer windows of portable display devices such as mobile phones, smart phones, electronic organizers (PDA, personal digital assistants), and tablet computers (tablet personal computers) have undergone chemical strengthening treatment, and have improved impact strength, surface hardness and Excellent physical properties in terms of flexural modulus. [0003] However, such transparent glass substrates have the disadvantages of being relatively expensive and relatively heavy compared to plastics. Especially recently, with the trend of lightening and thinning various portable devices, lightweight materials with low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/08B32B7/12B29C47/06B29C48/08B29C48/22
CPCB32B2250/40B32B2307/536B32B2457/20B32B2457/00Y10T428/31663B29C47/0021Y10T428/24975B32B2333/08B32B37/1284B32B7/02Y10T428/24959Y10T428/31587B32B37/02B32B2255/26B32B2307/306B32B7/12B32B27/08Y10T428/24942B32B2307/558Y10T428/31797B32B2333/12B29C47/067B32B2307/412Y10T428/31565Y10T428/31511B32B27/306B32B27/325B32B27/36B32B27/40B32B2255/10B32B37/153B32B2037/243B32B2307/584B32B2309/105B32B2310/0831B29C48/08B29C48/22B29C48/18
Inventor 李应基李敏熙申昌学朴欧逸
Owner LG HAUSYS LTD