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Manufacturing method of laminated film

一种薄膜、环氧树脂的技术，应用在化学仪器和方法、层压、分层产品等方向，能够解决运转费用上升、加热烤箱长、偏振镜薄膜或保护薄膜光学补偿薄膜变形等问题，达到有效制造、简便制造的效果

Active Publication Date: 2015-10-14
KYORITSU KAGAKU SANGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] If the light of strong illuminance is irradiated, the light changes due to heat. For example, in the case of a polarizer film, iodine discharge (ョウ element) occurs from a polyvinyl alcohol film (deflector (deflector) film) dyed with iodine or the like. 抜け), or the polarizer film or protective film or optical compensation film is deformed, thereby deteriorating the quality
[0007] In addition, when heating with an oven or the like after light irradiation, a heating device such as a heating oven is required, and especially when the line speed is fast, the heating oven becomes very long, the operating cost increases, and the equipment investment cost increases.

Method used

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  • Manufacturing method of laminated film
  • Manufacturing method of laminated film
  • Manufacturing method of laminated film

Examples

Experimental program
Comparison scheme
Effect test

manufacture example A～F

[0069] Production Examples A-F Preparation of Photocurable Epoxy Resin Adhesives

[0070] The following raw materials were measured and added to a container made of polyethylene, and mixed and stirred with a mixer to obtain a uniform photocurable epoxy resin adhesive (viscosity: 150 mPa / s (25° C.)).

[0071] [Table 1]

[0072]

[0073] 100MF: Trimethylolpropane triglycidyl ether, Kyoyoung Chemical Co., Ltd.

[0074] Epichrome EXA-850S: 4,4'-diglycidyloxy-2,2'-diphenylpropane, Dainippon Ink Chemical Co., Ltd.

[0075] Epichrome N740: Phenol Novolak Type Epoxy Oligomer, Dainippon Ink Chemicals Co., Ltd.

[0076] CEL2000: 1,2-epoxy-4-vinylcyclohexane, Daicel Chemical Industry Co., Ltd.

[0077] CEL3000: 1, 2: 8, 9 Diepoxylimonene, Daicel Chemical Co., Ltd.

[0078] CEL2021P: 3,4-epoxycyclohexenylmethyl-3',4'-epoxycyclohexene carboxylate, Daicel Chemical Co., Ltd.

[0079]CPI-101A: Photopolymerization Catalyst Sunapro Co., Ltd.

[0080] SP-172: Photopolymerization catalys...

Embodiment 1～6 and comparative example 1～3

[0083] Production of Laminated Films (Polarizers) of Examples 1-6 and Comparative Examples 1-3

[0084] By means of the photocurable epoxy resin adhesive (symbol: A) prepared in the production example, a triacetyl cellulose film was bonded to one side of a polyvinyl alcohol polarizer film that was uniaxially stretched and dyed with iodine, An amorphous polyolefin-based resin film (Zionoa Film manufactured by Nippon Zeon Co., Ltd.) was bonded to the other surface to obtain a film having a three-layer structure. Using an infrared lamp, heat the obtained three-layer structure film to room temperature (25°C), 30°C, 40°C, 50°C, 60°C, 70°C, 80°C, 100°C, 120°C, and 140°C, and use it immediately Metal halide lamp (manufactured by Aigrafix Co., Ltd.), with an irradiation intensity of 200 mW / cm 2 (405nm), cumulative light intensity 1000mJ / cm 2 (405 nm), light irradiation was performed to obtain a laminated film. The adhesive layer between the laminated films has a uniform thickness o...

Embodiment 7～13

[0109] Manufacture of Laminated Films of Examples 7-13 and Comparative Examples 4-6

[0110] In the manufacture of the laminated films of Examples 1 to 6 and Comparative Examples 1 to 3, between the metal halide lamp and the adherend film, an optical filter (Aigraficus Corp. system), and irradiate light. In the same manner as in Examples 1 to 6 and Comparative Examples 1 to 3, laminated films of Examples 7 to 13 and Comparative Examples 4 to 6 were obtained, respectively.

[0111] [table 3]

[0112]

[0113] As can be seen from Table 3, if an optical filter with a cutoff wavelength below 390nm is arranged between the metal halide lamp and the adherend, then compared with the case where no arrangement is made, the polarizer and the film will have less denaturation, and an optical filter with Laminated film with good adhesion and durability characteristics. Even if instead of a filter with a cutoff wavelength of 390nm or less, a filter with a cutoff wavelength of less than...

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Abstract

A manufacturing method of the laminated film welding films is provided, which uses optical curing epoxy resin-based adhesive which has no need of optical curing epoxy resin-based adhesive. A manufacturing method of the laminated film comprises: heating an optical curing epoxy resin-based adhesive existing between films at more than 40deg.C; and sticking film by irradiating light and curing. If the resin is the generally used optical curing epoxy resin, the optical curing epoxy resin is not limited specially and includes aromatic epoxy resin, aliphatic epoxy resin, alicyclic epoxy resin etc. Bisphenol A type epoxy resin, bisphenol F type epoxy resin, naphthalene structure epoxy resin, phenolnovolac type epoxy resin etc. are included as the aromatic epoxy resin.

Description

[0001] This application is a divisional application of the application number 200810096707.1 and the title of the invention "Manufacturing Method of Laminated Film" submitted by the applicant on May 5, 2008. technical field [0002] The present invention relates to a method for producing a laminated film that can be used in a wide range of fields. Specifically, it relates to a method for producing a laminated film in which films are bonded together using a photocurable epoxy resin adhesive. Background technique [0003] Laminated films are used in a wide range of fields including automobiles, airplanes, and electric and electronic devices. Especially in recent years, multilayer films in electrical and electronic devices have become increasingly diverse and sophisticated. In addition to the diversification and sophistication of laminated films, the production method of laminated films requires improvement in productivity, improvement in yield, simplification and automation of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B37/06B32B37/10B32B37/12
CPCB32B7/12B32B37/06B32B37/12B32B2307/42
Inventor 熊仓昌义尾上慎弥
Owner KYORITSU KAGAKU SANGYO KK
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