1. The first difference is that the opening direction is different. The self-adhesive bag has an upper opening and a lower opening, and the ridge bag has a left opening and a right opening (horizontal).

2. The second difference is aesthetic difference. The spine bag is frosted, which is closer to the book, and the aesthetics after packaging is higher than that of the adhesive bag.

Self-adhesive bag is a kind of plastic bag which is improved on the basis of ordinary plastic bag.