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Analysis of Hot Melt Adhesive Particles: Reasons for High Adhesive Temperature and Bubbles.
Hot melt adhesive particlesare a type of plastic adhesive. Their physical state changes with temperature within a certain temperature range. The chemical properties of hot melt adhesive are non-toxic and odorless. It is an environmentally friendly chemical.
Hot melt adhesive is usually melted by heating the adhesive. After tuberculosis, the colloidal state changes to liquid state. It can be made through coating, spraying, and peeling.
During the production process of the hot melt adhesive machine, bubbles may sometimes appear. What is the reason for the formation of bubbles? The reason for the formation of bubbles may be due to the presence of bubbles in the colloid itself, the presence of bubbles after melting, or the presence of moisture in the colloid, which can easily form bubbles when heated.
Another type is that the hot melt adhesive is damaged due to high temperature, decomposing to produce gas and bubbles. Therefore, the reason why hot melt adhesive decomposes due to high temperature depends on the composition of the hot melt adhesive.
This type of hot melt adhesive particle is composed of thermoplastic elastomer, softener, and resin. Resin and plasticizer are small molecules. There are many unsaturated bonds in the molecule. Molecular bonds are unstable. When heated to very high temperatures, they react with oxygen in the air.
It produces gases such as carbon dioxide, which in turn creates bubbles.
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