Bookbinding hot melt adhesive

Ordinary people will think that 502 glue and wood are not related to the fundamental, even if the board needs to be bonded, it will not use 502 glue, in fact, the plate in the production process, the plate will have a very small area of damage, such as some Small holes, uneven surfaces, recessed sheets, etc., all affect the quality of the sheet. Therefore, instant glue should be used for repair. Flattened and flattened parts of the sheet with wood flour, and then dripped 502 glue so that the wood flour and the sheet were stuck together. After the glue had not been cured, the board surface was polished with sandpaper because it was completely cured. Afterwards, the wood powder of the dripper glue will be very hard and it will increase the difficulty of smooth grinding and it will take time and effort. The polished plate can be processed further. It will not be used because of its small deficiencies.