BIODEGRADABLE ADHESIVE AND SHEET
To provide a biodegradable adhesive which has biodegradability because of use of a biodegradable material, is excellent in film formation property in a laminate method, and exhibits excellent adhesive strength and easy openability, especially, a biodegradable adhesive which has an adhesive strength...
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Main Authors | , |
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Format | Patent |
Language | English Japanese |
Published |
29.10.2020
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Subjects | |
Online Access | Get full text |
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Summary: | To provide a biodegradable adhesive which has biodegradability because of use of a biodegradable material, is excellent in film formation property in a laminate method, and exhibits excellent adhesive strength and easy openability, especially, a biodegradable adhesive which has an adhesive strength and is excellent in easy openability in low-temperature heat sealing, and a sheet having an adhesive layer formed of the adhesive.SOLUTION: A biodegradable adhesive contains at least one resin (A) selected from a group consisting of polybutylene succinate and polybutylene succinate adipate, and a polylactic acid (B). The biodegradable adhesive contains 65-80 mass% of the resin (A) and 20-35 mass% of the polylactic acid (B), and the polylactic acid (B) has a melt flow rate of 1-30 g/10 min and a melting point of 40-70°C.SELECTED DRAWING: None
【課題】本発明が解決しようとする課題は、生分解性材料を使用しているため生分解性を有しており、さらに、ラミネート法での成膜性に優れ、且つ、優れた接着強度と易開封性を示す生分解性接着剤、特に低温ヒートシール時でも接着強度を有し易開封性に優れる生分解性接着剤、及び該接着剤より形成される接着剤層を有するシートを提供することにある。【解決手段】上記課題は、ポリブチレンサクシネート及びポリブチレンサクシネートアジペートからなる群から選ばれる少なくとも1種の樹脂(A)と、ポリ乳酸(B)とを含む生分解性接着剤であって、前記生分解性接着剤は、樹脂(A)を65〜80質量%、ポリ乳酸(B)を20〜35質量%含有し、前記ポリ乳酸(B)のメルトフローレートが1〜30g/10分であり、融点が40〜70℃である、生分解性接着剤によって解決される。【選択図】なし |
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Bibliography: | Application Number: JP20190080714 |