Detailed Explanation of the heat Sealing Process for canopy fabric

1. High-Frequency Heat Sealing Technology

High-frequency heat sealing (high-frequency welding) uses an electromagnetic field to polarize the molecules of the film material, generating heat. After melting, pressure is applied and cooling is performed to achieve welding. Its advantages include:

High efficiency and precision: Welding speed reaches 5-10 meters/minute, supporting continuous wire bonding.

High strength: Joint strength can reach 80%-90% of the base material.

No pollution: No adhesive required, meeting medical-grade safety standards.

2. Weld Treatment

After heat sealing, the following treatments are required:

Visual inspection: Ensure the weld is smooth and free of bubbles, scorch marks, or impurities.

Strength testing: Verify the weld strength through tensile testing, ensuring it meets the base material standards.

3. Testing Methods

Destructive testing: Sampling is used for tensile and bending tests to evaluate weld strength and toughness.

Weather resistance testing: Simulating ultraviolet radiation and high-temperature environments to evaluate long-term performance changes.