Sound insulation cotton is widely used in construction and automobile industries. Popular materials of sound insulation cotton include polyester fiber, polyurethane foam, high-density egg wool, glass fiber, gradient cotton, rock wool, etc. The use of soundproofing cotton with hot melt adhesive backing coating significantly improves work efficiency. There are also multi-layer composite soundproof cotton, and the middle composite layer also requires the use of soundproof cotton hot melt adhesive.

With the improvement of technology and processes, the use of soundproof cotton has come with self-adhesive function. The implementation of self-adhesive function comes from the soundproof cotton hot melt adhesive or soundproof cotton hot melt pressure-sensitive adhesive coated on the back of the soundproof cotton, also known as soundproof cotton adhesive block by users.

Soundproofing cotton hot melt adhesive is generally applied by spray coating, so there are requirements for the fluidity of the adhesive to ensure smooth spraying. In addition, the temperature inside the car is relatively high, especially in summer, the temperature inside the car can reach 50-60 ℃. Therefore, it is also required that the adhesive can maintain good bonding effect in high temperature environments.