Use methanol solvent to clean the surface of polyurethane PUR. Surface treatment method of polypropylene:
1. Apply 2% butyl titanate petroleum ether solution to the bonding surface, and heat and dry with a hair dryer.
Method 2. Use the combustion flame of combustible gas to burn instantly (3 seconds) at high temperature to obtain a polar surface.
Adhesive: Beijing TS801, TS802 or epoxy-polyamide glue