| 摘要 |
PROBLEM TO BE SOLVED: To improve rapid productivity by constituting an adhesive used for bookbinding in combination with a urethane reaction type hot-melt adhesive and an aqueous adhesive. SOLUTION: As a urethane reaction type hot-melt adhesive 3, a polyether polyol, a polyester polyol or the like is used. As an aqueous adhesive 4, a synthetic resin emulsion adhesive having a carboxyl group, a synthetic resin emulsion adhesive using a polyvinyl alcohol, a hydroxyethylcellulose or the like as a protective colloid can be used. In the case of bookbinding, laminating surfaces of a plurality of sheets 1 are coated with anyone of the adhesive 3 and the adhesive 4, a laminating surface of a cover 2 is coated with the other, the sheets 1 and the cover 2 are laminated and bookbound. Thus, adhesive properties and durability are improved, and raid productivity can be improved.
|
