Strong Adhesive Book Binding Adhesive

                                                          Hot Melt Adhesive For Book

Wireless binding Hot Melt Adhesive color is milky white, transparent, light yellow, white translucent, deep yellow. Hot Melt adhesives for books and periodicals are divided into edge adhesives and back adhesives according to their use. Edge glue: Sticky cover, generally need to be softer than the back glue, color requirements are not high. High viscosity requirement. Back glue: The color requirements are slightly higher. And hardness requirements greater. According to the shape: cylindrical particles, round particles, block these three kinds are mostly. Generally speaking, the more yellow the Binding Agent, the stronger its viscosity.

Hot melt adhesive must pay attention to the following matters during use:
(1) Hot melt adhesive for book hardening time: in addition to the need for a certain opening and curing time, it is also required that the adhesive should be cooled and hardened (dry) as soon as possible, so that the finished product can be cut smoothly. This time requires fast and accurate, especially for the processing of the wireless binding linkage production line, because this production line is a linkage production line from the paging machine to the cutting of the book, and the working process of each part is consistent with each other according to the motion of the beat, therefore, the book is issued after the cover of the package, and the time of transmission to the cutting of the book must have a certain regularity and accuracy. In order to achieve the ideal effect after cutting books. That is, the time of book transmission should ensure that when the book reaches the part under the knife of the book cutting machine, the back of the book should have reached the degree of cooling hardening and drying, so that the quality of the finished product can be guaranteed after cutting. This time is generally used for 3 minutes to complete, otherwise it will cause deformation of the back of the book, size instability, sticky knives, dirty books and other phenomena. Therefore, the length of the conveyor belt of the book transmission device of the linkage production line should be selected according to the running speed.

(2) hot melt adhesive opening time: the opening time refers to the adhesive liquid applied to the adhesive (the back of the book or the time to be glued, generally 7 to 13 seconds), this time is the sewing machine after the milling back transmission, from the adhesive liquid to the cover and the back of the book, the adhesive mouth bonding, clamping until the working process (including sticky paper), that is, the Equipment must be in operation within 13S to complete the work. If the equipment is not completed within 13s in operation, then the bonding effect is certainly not ideal, and there will be poor adhesion, empty back, page drops after the book, and so on. Therefore, the opening time of hot melt adhesive should be determined according to the needs of the running speed of the gluing machine.
(3) hot melt adhesive curing time. Curing time refers to the solidification time of the liquid adhesive, that is, the process of bonding firmly to be cooled and solidified. The curing time is generally 7 to 14 seconds, which is basically the same as the opening time, and the user hopes that this time can be shortened to be more conducive to the setting and cooling of the book.