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Multi-purpose paper folder, which is inside glued back for stapling documents
Multi-purpose paper folder, which is inside glued back for stapling documents
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机译:多功能纸文件夹,内部粘在一起用于装订文档
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摘要
Universal paper file with inside glued back for bundling documents, of the type consisting of a front cover, a back cover and a back, which at the inside contains a glue layer made of a sort of thermosetting glue, characterized thereby that both the glue of said glue layer and the back of the paper file are made of materials that upon thermal activation enter into a chemical reaction, which provides a mutual per manent bond.
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