1. According to different production processes and equipment, gel is roughly classified as follows:

A, low-speed semi-automatic equipment with gel glue: manual or semi-automatic machine with glue, this kind of glue drying speed is slow, after the face paper is glued, the glue is still sticky within 120 seconds and does not solidify. This allows enough time for the rest of the production to be done by hand. It is suitable for semi-automatic shell machine, pasting machine, glue machine and manual pasting.

B gel glue for medium-speed leather shell machine: it is used for the production of various gift boxes with fast curing speed and drying time of about 60 seconds, which is common medium-speed jelly glue. glue can strengthen the hardness of cardboard and has strong softness. it is suitable for semi-automatic leather shell machine with heating equipment, pasting machine and pasting machine.

C, high-speed shell machine gel glue: suitable for hardcover book shell production, with fast curing speed and high toughness, strong folding characteristics, the highest speed can keep up with 60-80 per minute machine, suitable for the use of automatic high-speed shell machine.

D, hardcover linkage line special gel: hardcover special spine gel is specialized for hardcover book spine configuration, with the characteristics of slow speed and strong toughness, suitable for hardcover linkage line three adhesive use.

2. According to the viscosity of glue, jelly glue is roughly classified as follows:

A: ultra-low viscosity-with a one-time temporary fixed positioning of the best

B: low viscosity-with temporary packaging positioning

C: medium viscosity-positioning with temporary packaging

d: high viscosity-can be fixed for a long time

E: super viscosity-can be permanently fixed