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What kind of hot melt adhesive film is used for PET bonding

date:29-06-2021
Summary:

PET is a common plastic product, and PET film is often […]

PET is a common plastic product, and PET film is often used for electrical insulation materials, film bases, and the application of vacuum aluminum plating to make metallized films. There are also common plastic bottles, and many are made of PET.

PET is a relatively difficult-to-stick plastic product, but its bonding can be hot melt adhesive film achieved using hot melt adhesive film. Therefore, the hot melt adhesive film plays a very important role in the bonding of PET materials, especially PET films.

What kind of hot melt adhesive film is usually used for bonding PET film? ·

Generally speaking, if the requirements for bonding strength are not very high, we usually recommend using EVA hot melt adhesive film for bonding. EVA hot melt adhesive film has a wide range of bonding capabilities, that is, material adaptability is relatively good, and it can have relatively good bonding strength to many materials, so it can also have a certain bonding to PET film. However, EVA hot melt adhesive film also has its inherent shortcomings. One is that the high temperature resistance performance is general, and the hydrolysis resistance performance is not very good. Therefore, when these performance requirements are required, EVA hot melt adhesive film is not competent for the adhesion of PET film. Up.

When there are higher requirements for the bonding of PET materials, we usually use polyester hot melt adhesive films for bonding. That is, PES type hot melt adhesive film is used. Compared with EVA hot melt adhesive film, PES hot melt adhesive film has a higher temperature, so it also has better heat resistance and water resistance. However, compared to EVA hot melt adhesive film, the cost of PES hot melt adhesive film is a bit higher.

Regarding whether to choose EVA hot melt adhesive film or PES hot melt adhesive film, another very key point is what material the PET film is bonded to. As the material adaptability of EVA hot melt adhesive film will be wider, there will be more materials that can be glued.

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