Hot-melt adhesive for hardcover book processing, and preparation method thereof

Abstract

The present invention discloses a hot-melt adhesive for hardcover book processing, and a preparation method thereof. A purpose of the present invention is to solve the problem of easy cracking in theexisting adhesive for hardcover books. The technical scheme is that the hot-melt adhesive comprises, by weight, 15-25 parts of a thermoplastic polyurethane resin, 3-10 parts of toluene diisocyanate, 30-50 parts of polyol, 2.5-8.5 parts of an anhydride group, 2-5 parts of a filler, 12-24 parts of an epoxy resin, 3-8 parts of bentonite, and 2-8 parts of petroleum wax. According to the present invention, the hot-melt adhesive obtained by using the components through the preparation method has high toughness; and when the hot-melt adhesive is adhered between the surface of the hardcover book and the core of the hardcover book, the cracking due to brittleness is not easily generated so as to prolong the service life of the hardcover book.

Description

technical field [0001] The invention relates to the technical field of hardcover book processing and manufacturing, in particular to a hot-melt adhesive for hardcover book processing and a preparation method thereof. Background technique [0002] Hardcover is a form of book binding with a protective hardback cover. Books in mainland China are generally paperback books, but paperback books are not suitable for preservation. Hardcover books are beautiful, easy-to-preserve books, and have extremely high collection value. The book block and writing of the hardcover book need to use adhesives during the processing process. Common adhesives include hot-melt adhesives. Hot-melt adhesives are adhesives with less solvents, which are melted by heat and applied to the Sticky matter, and then hardened by cooling to show adhesiveness, and thus hot melt adhesives can bond instantly and quickly, and can be used in a wide range of different fields such as paper processing, woodworking, san...

AI Technical Summary

Problems solved by technology

[0004] This hot-melt adhesive is the same as the hot-melt adhesive for hardcover book binding in use, mainly through physical curing, which has poor flatness and poor flexibility. The adhesive is easy to tear. At the same time, after a long time, the adhesive becomes brittle. Under the action of external force, it is easy to fall off from between the writing and the book block, resulting in a low degree of adhesion between the writing and the book block. Therefore, it can be used for a long time. Finally, the writing and the book block are easy to separate, which has the disadvantage of low life

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