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Barrier film

A technology of barrier film and barrier layer, which is applied in the direction of electronic equipment, types of packaging items, special packaging items, etc., and can solve problems such as deterioration of physical properties

Active Publication Date: 2020-10-30
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in a roll-to-roll process, the film is often wound and / or unwound during the manufacturing process of the barrier film, and during the process, the barrier layer or the barrier layer precursor layer often causes Deterioration of physical properties

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0128] Production of barrier layers

[0129] A coating solution obtained by dissolving polysilazane in dibutyl ether was applied to a PET (poly(ethylene terephthalate)) film (T600E50, Mitsubishi) having a thickness of 50 μm by a bar coating method , and the obtained coating film was kept at 70° C. for 1 minute and at 130° C. for 2 minutes to form a polysilazane layer with a thickness of about 300 nm.

[0130] Production of anti-blocking layers

[0131] Make pentaerythritol triacrylate (PETA, trifunctionality, molecular weight: about 298.291g / mol) and dipentaerythritol hexaacrylate (DPHA, hexafunctionality, molecular weight: about 524g / mol) in a ratio of 8:2 (PETA:DPHA) Weight ratio Dissolved in a solvent (propylene glycol monomethyl ether). Relative to the total weight of 100 parts by weight of PETA and DPHA, by adding 4 parts by weight of a polymerization initiator (Irgacure 127, Ciba) and 0.4 parts by weight of particles (average particle diameter (D50 particle diameter): ...

Embodiment 2

[0136] Example 2: Production of barrier film

[0137] A barrier film was produced in the same manner as in Example 1, except that particles (MX-2000, Soken ) instead of particles with an average particle size (D50 particle size) of 5 μm.

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Abstract

The present application provides a barrier film and a method for manufacturing same. The barrier film, as a structure including a polysilazane barrier layer, may exhibit excellent running properties in a so-called roll-to-roll process, and the performance of the barrier layer may be maintained or improved even during a unwinding and / or winding process.

Description

technical field [0001] This application claims priority based on Korean Patent Application No. 10-2018-0047791 filed on April 25, 2018, the disclosure of which is incorporated herein by reference in its entirety. [0002] The present application relates to barrier films and methods of making the same. Background technique [0003] Barrier films have been used in various applications including not only packaging materials for food or medicine, etc., but also display members such as LCD (Liquid Crystal Display) and OLED (Organic Light Emitting Display), solar cell members or electronic paper, and the like. [0004] Barrier films can be produced, for example, by forming a layer of a material having excellent gas and / or moisture barrier properties on a polymer film. For example, a dry coating method or a wet coating method can be applied to the formation of the layer. [0005] Dry coating methods include so-called physical vapor deposition (PVD), chemical vapor deposition (CVD...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/048C08J7/04C08J5/18C09D133/08C09D183/14C08L67/02
CPCC09D133/08C08J5/18C08J7/048C08J7/042C08J7/043C08J7/046C09D183/16C08G77/62Y02E10/549C08J2433/08C08J2483/14B32B27/08B32B27/18B32B27/28B32B27/308C08G77/54B32B2250/03B32B2250/04B32B2264/0235B32B2264/025B32B2264/1021B32B2264/302B32B2264/303B32B2307/538B32B2307/7244B32B2307/7246B32B2333/08B32B2439/70B32B2439/80B32B2457/202B32B2457/206
Inventor 朴宝拉孙凡权丁喜俊黄樯渊
Owner LG CHEM LTD
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