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How to distinguish the quality of book binding glue? The hot melt adhesive used in books is divided into backing adhesive and edge sealing adhesive According to the thickness of different materials of paper and books, book adhesives with different viscosities and flow effects can be used to complete the bonding work of book pages.
Hot melt adhesive for books is already very mature, and both thick and thin books can be glued together. However, many people do not pay much attention to the application of hot melt adhesive in their daily lives.
How to distinguish book binding hot melt adhesive:
Firstly, the same paper can be used and different machine speeds can be used to test the glue. Through this testing method, the bonding effect and tensile strength of this hot melt adhesive can be determined. On the same machine, test the bonding effect and tensile strength of this hot melt adhesive with different papers at the same speed. Put the glued paper in the refrigerator and freeze for about 1-3 hours. Take out the paper in batches, separate the glue from the middle, observe whether the paper is damaged or brittle, and determine the weather resistance of the glue. Of course, for book hot melt adhesive itself, it is necessary to observe whether the adhesive has impurities, whether there are bubbles, and the viscosity of the adhesive during heating to determine the quality of the adhesive.Why do hot melt adhesive particles emit a lot of smoke during the heating process? When using hot melt adhesive, its viscosity can only be affected by heating. The hot melt adhesive equipment used in industry cannot do without a heating system. Sometimes, there may be a large amount of abnormal smoking during the heating […]
Answer directly The cover of the express envelope is self-adhesive, and it is recommended to use one that has fast initial adhesion, good adhesion to PE and paperHot melt adhesive granulesApply a strip-shaped adhesive line, and the sealing can be controlled by sticking or tearing. The key lies in the opening time and the balance […]
hot melt adhesive pelletsAre you afraid of ultraviolet rays? Hot melt adhesive particles are based on high molecular weight materials such as EVA, PO, PA, etc. These materials undergo photo oxidative degradation under long-term UV irradiation – molecular chain breakage, decreased cross-linking degree, resulting in yellowing and brittleness of the adhesive layer, and decreased bonding […]
Heavy calcium carbonate (CaCO3) in hot melt adhesive is a commonly used filler that can increase the hardness of colloids, improve their wear resistance and stability, and reduce costs. However, in the hot melt adhesive system, due to its high density, heavy calcium is prone to settling, leading to segregation, that is, the separation of […]
