Usually need sewn products or objects in the Velcro, the factory has an ad hoc sub-section and high-frequency ultrasonic heating sub-section to effectively prevent the Velcro loose side. Products with the following physical properties: 
 1. Good electrical insulation, iron perm gently from the back of the press. 
 2. There is a high degree of heat and cold resistance. 
 3. Then strength testing: This product samples length 50mm, width 25mm, lateral pull under 8.5kg. 
 4. Can be washed, dry cleaning, or washing machine wash, do not fade.