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Laminate and method for manufacturing laminate

A technology of laminates and printed layers, applied in chemical instruments and methods, lamination, coating, etc., can solve problems such as inability to obtain gas barrier properties

Inactive Publication Date: 2018-08-03
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there is compatibility between the printed layer and the adhesive layer, and depending on the situation, the desired gas barrier properties may not be obtained

Method used

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  • Laminate and method for manufacturing laminate
  • Laminate and method for manufacturing laminate
  • Laminate and method for manufacturing laminate

Examples

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Embodiment

[0287] Hereinafter, in order to facilitate the understanding of the present invention, the present invention will be specifically described through examples, but the present invention is not limited to the examples. In addition, the parts and % in each example are based on a mass basis unless otherwise indicated.

[0288]

[0289]In a four-necked flask equipped with a stirrer, a thermometer, a reflux cooling tube, and a nitrogen gas introduction tube, the number average molecular weight obtained by reacting a mixture of ethylene glycol and neopentyl glycol (molar ratio=1 / 1) with adipic acid was 1,800 605.9 parts of polyester diol and 94.1 parts of isophorone diisocyanate were reacted at 90° C. for 10 hours under a nitrogen stream to produce a prepolymer with a free isocyanate value of 1.02% by mass, and ethyl acetate was added thereto 300 parts of ester to make a homogeneous solution of urethane prepolymer. Next, to a mixture containing 18.1 parts of isophorone diamine, 873...

manufacture example 1

[0291] (Manufacturing example 1) Manufacture of polyester polyol "EGoPA900" with a number average molecular weight of 900 consisting of ethylene glycol and phthalic acid

[0292] In the polyester reaction container equipped with stirrer, nitrogen inlet pipe, Snyder (Snyder) tube, condenser, drop into ethylene glycol 747.31 parts, phthalic anhydride 1252.70 parts and titanium tetraisopropoxide 0.02 parts, with fine Slowly heat the upper part of the distillation tube so that the temperature does not exceed 100°C, and keep the internal temperature at 220°C. When the acid value reached below 4 mgKOH / g, the esterification reaction was terminated to obtain a polyester polyol "EGoPA900" with a number average molecular weight of 900. The number of repeating units of this polyester polyol was n=3.94, and the value of the permeability factor of residues other than terminal hydroxyl groups was 54.8. The hydroxyl value is 120.9.

manufacture example 2

[0293] (Manufacture example 2) Manufacture of polyester polyol "EGoPA1100" with a number average molecular weight of 1100, which consists of ethylene glycol and phthalic acid

[0294] Add 747.31 parts of ethylene glycol, 1252.70 parts of phthalic anhydride and 0.02 part of titanium tetraisopropoxide to the polyester reaction vessel equipped with a stirrer, nitrogen inlet pipe, Snyder tube and condenser, and use the upper part of the rectification pipe Heat slowly so that the temperature does not exceed 100°C, and keep the internal temperature at 220°C. When the acid value reached below 4 mgKOH / g, the esterification reaction was terminated to obtain a polyester polyol "EGoPA 1100" with a number average molecular weight of 1100. The number of repeating units of this polyester polyol was n=4.82, and the permeability factor value of the residues other than the terminal hydroxyl group was 55.4. The hydroxyl value is 102.7.

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Abstract

Provided are: a laminate including a first substrate, a second substrate, a print layer provided on the second-substrate-side surface of the first substrate, and an adhesive layer which is disposed between the print layer and the second substrate and which bonds the first substrate and the second substrate to each other, the print layer being formed from a printing ink composition (A) that includes an urethane resin (A1) and a vinyl chloride-vinyl acetate copolymer resin (A2), and the adhesive layer being formed by applying a two-liquid-type polyurethane-based adhesive (B) that contains a polyol (B1) having a number-average molecular weight of 2,300 or less and an isocyanate compound (B2); and a method for manufacturing the laminate.

Description

technical field [0001] The present invention relates to a laminate and a method for producing the laminate. Background technique [0002] For packaging materials used in the packaging of food and daily necessities, functions such as strength, resistance to breakage, and gas barrier properties are required to protect the contents from impact during distribution, etc., and from deterioration due to oxygen or moisture. When heat-sterilizing the contents, retort resistance, heat resistance, etc. are required, and transparency may be required so that the contents can be confirmed. However, it is difficult to satisfy necessary functions with one material. For example, an unstretched polyolefin film used for sealing by heat sealing is excellent in hot workability, but has insufficient oxygen barrier properties. In contrast, nylon films are excellent in gas barrier properties but poor in heat sealing properties. [0003] Accordingly, laminates obtained by pasting different types ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/40B32B27/26B32B27/28C09D11/102C09D11/107C09J11/04C09J175/04
CPCB32B27/26B32B27/28B32B27/40C09J11/04B32B27/08B32B27/16B32B27/302B32B27/304B32B27/306B32B27/308B32B27/32B32B27/34B32B27/36B32B2250/02B32B2250/03B32B2250/04B32B2250/24B32B2255/10B32B2255/205B32B2255/28B32B2307/306B32B2307/308B32B2307/4023B32B2307/412B32B2307/54B32B2307/7244B32B2307/7246B32B2307/7248B32B2307/7265B32B2307/734B32B2307/75B32B2419/00B32B2439/00B32B2439/70B32B2457/00C08G18/7642C09D11/03C09D11/106C08G18/4211C09J175/06C08G18/73C08G18/755C08G18/8029C08G18/10C08G18/4238C08L75/06B32B38/145C09D11/102B32B7/12B32B37/1284B32B2255/26C08G18/3234C08L35/06C09D11/107C09J175/04
Inventor 新居正光下口睦弘
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