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Determine whether the material used to make the box is the same as before, and whether the surface has been treated, such as copperplate paper, with completely different properties from the original one. The performance differences of hot melt adhesives for the same purpose in the market are not significant. It will be difficult to find suitable hot melt adhesive for cardboard boxes, and passive selection may increase production costs. If the bonding effect of the cardboard packaging is really poor, it is recommended to adjust the surface treatment process of the cardboard box.
Secondly, whether the temperature has changed significantly from the previous time, the external temperature will affect the curing speed of the hot melt adhesive. When the weather is cold, the curing speed will be shortened, and if the line speed cannot keep up, it will not stick firmly. There are several solutions:
Firstly, it is to improve the speed of the production line, so that the glue can complete the sealing operation with better adhesive performance; Secondly, increase the usage temperature of hot melt adhesive by 5-10 degrees Celsius to prolong the cooling time; 3. Replace the hot melt adhesive with one that dries less quickly in cold weather.Moreover, whether the quality of the cardboard box hot melt adhesive is consistent with before and how much the quality of the raw materials fluctuates have an impact on the quality of the hot melt adhesive products. If the manufacturer does not control it well, it will have a significant impact on performance. This is a matter of choosing a long-term cooperative hot melt adhesive supplier. It is important to choose a Sunlife hot melt adhesive manufacturer with research and development capabilities, rather than relying on a formula to constantly adjust the composition ratio. What happens in the application can fundamentally solve the problem.
Polyamide is a synthetic product with high tensile strength, which is very suitable for hot melt adhesives. The chemical process generates a highly effective ultra tight bond. Polyamide hot melt adhesive can be used for various applications and adheres to many surfaces; Some people even insist on using challenging PVC. Polyamide hot melt adhesive is […]
In book binding with copperplate paper as the inner page, due to the thin film covering the surface of copperplate paper, there is a high demand for the adhesive used. It is difficult for people to bind books and periodicals with white glue in order to make them more firmly attached to copperplate paper. After […]
More and more manufacturers are using EVA hot melt adhesive to process books and other materials, regardless of the size of the processing plant, there will still be an upward trend in the future. This is because using this adhesive has the advantages of fast book publishing, short cycle time, beautiful appearance of books, and […]
Direct answer: The reason for the broken glue when flipping pages in the adhesive book is that the glue layer has not penetrated into the back of the book and the glue layer is brittle. The solution needs to start from four aspects – milling and slotting should be in place, the temperature and amount […]
