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Adhesive and packing laminated product using the adhesive

一种粘合剂、多元醇的技术，应用在层压制品领域，能够解决粘合强度降低、性能降低、粘合缺乏等问题，达到优异粘合性能、高粘合强度、粘合性能优异的效果

Active Publication Date: 2005-06-08
TOYO INK SC HOLD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if boiling or retorting is required for high-temperature sterilization, such adhesives will cause partial adhesion lack due to negligible deflection during post-retort fabrication such as stacking, causing problems with appearance defects, or causing Performance degradation over time due to inclusions and substrates
For example, if a bag made of a composite film usually comprising polyester or nylon / aluminum foil / unstretched polypropylene film is filled with highly acidic foods such as vinegar, soy or seasoning oils, oily foods, or mixtures thereof as contents, Then carry out the dry distillation treatment, the adhesive strength will decrease immediately after the dry distillation or the unfavorable phenomenon of air bubbles will occur after a period of time

Method used

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  • Adhesive and packing laminated product using the adhesive
  • Adhesive and packing laminated product using the adhesive

Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1-5

[0044] Add 13.28kg of isophthalic acid, 2.48kg of ethylene glycol, 4.16kg of neopentyl glycol and 4.72kg of 1,6-hexanediol into the container for esterification at 200-230°C for 6 hours. After a predetermined amount of water was distilled off, 2.92 kg of adipic acid was added, followed by esterification for another 6 hours. After distilling the specified amount of water, gradually reduce the pressure to 1.21×10 2 to 1×10 3 Pa, esterification reaction was carried out at this pressure and temperature range of 230-250° C. for 5 hours to obtain a polyester polyol having a number average molecular weight of 5,000, a hydroxyl value of 23 mgKOH / g and an acid value of 0.5 mgKOH / g. In addition, 0.75kg of isophorone diisocyanate was added dropwise to the above product (based on the total amount of polyester polyol, the NCO / OH molar ratio was 0.7), and then reacted at 150°C for about 2 hours to generate a number average Polyester polyurethane polyol having a molecular weight of 13,000,...

Embodiment 1-4

[0047] (Examples 1-4, and Comparative Examples 1 and 2)

[0048] Partly acid-modified polyol solutions A-E, polyisocyanate shown below, silane coupling agent and ethyl acetate were mixed according to the ratio (mass ratio) shown in Table 2, to obtain the non-volatile matter containing 25% by mass binder solution. These adhesive solutions were respectively used to produce laminates according to the following methods, and then each of the produced laminates was subjected to a lamination strength test, a hot water resistance test and an acid resistance test as described below. The results are shown in Table 3.

[0049] Polyisocyanate: CAT-RT86 (the trade name of the adduct mixture of xylylene diisocyanate and trimethylol propane and the adduct mixture of isophorone diisocyanate and trimethylol propane, a product of Japan ToyoMorton K.K. .)

[0050] Silane coupling agent:

[0051] γ-glyceryloxypropyltrimethoxysilane (product of Shin-Etsu Chemical Co., Ltd., Japan) (preparation...

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Abstract

The invention discloses an adhesive and a packaging laminate using the adhesive. The adhesive contains polyisocyanate and partially acid-modified polyol, which is the reaction product of polyol with a certain proportion of anhydrous trimellitic acid and anhydrous trimellitate, the proportion of which is For: 10-70% by mass of anhydrous trimellitic acid, 90-30% by mass of anhydrous trimellitate, and 100% by mass of the total amount of anhydrous trimellitic acid and anhydrous trimellitate . The packaging laminate has first and second sheet-like base liners and the above-described adhesive laminating the first and second sheet-like base liners.

Description

technical field [0001] The present invention relates to an adhesive having excellent adhesive properties, which is suitable for use in the manufacture of packaging food, medical supplies, Laminated products such as cosmetics. Furthermore, the present invention also relates to a laminated product used for packaging food, medical supplies, cosmetics and the like. Background technique [0002] Recently, metal foil (such as aluminum foil) or metal coating film and plastic film, such as polyethylene, polypropylene, vinyl chloride, polyester and nylon, have been used as food, medical supplies, cosmetics, etc. Packaging materials (see, for example, Japanese Patent Application Laid-Open No. 60-243182). As an adhesive for bonding a plastic film (such as the above-mentioned plastic film) with a metal foil or a metal coating film, a composition of an isocyanate compound and a polyester is known, by making a polyester polyol and an aromatic polycarboxylic acid The anhydride is reacte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D65/40B32B27/00C08G18/10C08G18/42C09J11/06C09J167/00C09J175/04C09J175/06
CPCC08G18/10C08G18/4211C09J175/06Y10S528/905Y10T428/31605C08G18/755C08G18/7642C08G18/34C09J175/04
Inventor 池田彰池田良平福田敬志中岛康喜
Owner TOYO INK SC HOLD CO LTD
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