Medium temperature hot melt adhesive is a kind of plastic adhesive. Its physical state changes with temperature in a certain temperature range, and its chemical property is invariable. It is non-toxic and tasteless, and belongs to the environmental protection type chemical product. It is one of the commonly used adhesive today, but how to choose the appropriate hot melt? The following is only for reference:
First, hot melt adhesive color: if be adhered to the color itself has no special requirements, then you can use the yellow hot melt, in general, yellow hot melt adhesive is better than the white viscous.
Two, surface treatment adhered to surface treatment: hot melt adhesive without other adhesives so strict, but by the dust, the adhesive surface of the oil should be handled properly, so as to make the hot melt bonding play a better role.
Three, bonding time: fast bonding is one of the characteristics of hot melt adhesive, hot melt adhesive time only in 15 seconds, with the modern mode of production is widely used in the production line of hot melt adhesive time requirements are higher, the shorter the better, such as bookbinding and speaker manufacturing time on thermal bonding melt requirements in 5 seconds.
Four, medium temperature hot melt adhesive sensitivity to temperature: temperature reaches a certain degree, hot melt adhesive starts softening, below a certain temperature, hot melt adhesive will become crisp, so choosing hot melt adhesive must take full account of the temperature change of the product's environment.
Five, viscosity: hot melt viscosity is divided into early and late sticky sticky, only early and late sticky sticky consistency, in order to make the hot melt adhesive and is stable.
In the course of hot melt adhesive production process, should ensure that it has antioxidant, anti acid alkali and halogen, plasticizer, the adhesive material is different, the hot melt adhesive is also different, therefore, should according to different materials, different choices of hot melt adhesive.