What heat sealing equipment is commonly used for membrane materials in membrane buildings

In membrane architecture, commonly used membrane materials include PVC, PTFE, and ETFE. The following is a detailed analysis:

PVC Membrane Material: Material Characteristics: Made with polyester fiber as the base material, coated with a PVC layer, and partially coated with acrylic or fluoropolymer resins (such as PVDF, PVF) to improve weather resistance. Low cost and easy construction, but limited durability. Ordinary PVC membranes have a durability of 5-8 years, while PVDF coatings can extend it to 7-10 years. Long-term use is prone to discoloration and cracking.

Heat Sealing Equipment: Puxiong high-frequency heat sealing machine. Utilizing a high-frequency electromagnetic field to polarize the molecules inside the membrane material and generate heat, the coating is melted and then pressure-cooled to achieve welding. High weld strength, with joint strength reaching 80%-90% of the base material, good airtightness, suitable for inflatable structures.

Application Scenarios: Temporary buildings, low-budget projects, or short-term use scenarios.

PTFE Membrane Material

Material Characteristics: Ultra-fine glass fiber fabric coated with polytetrafluoroethylene (PTFE) resin, offering high durability, chemical stability, resistance to UV radiation and acid/alkali corrosion, and a service life exceeding 25 years. Excellent fire resistance, meeting fire standards in most countries worldwide, and a viable alternative to traditional roofing materials. Good self-cleaning properties, low surface friction coefficient, allowing rainwater to easily wash away dirt. Low flexibility, requiring special tools for installation to prevent glass fiber breakage.

Heat Sealing Equipment: Puxiong PTFE heat sealing machine. PTFE membrane material itself cannot be melted; welding is achieved by adding heat-melting materials. High weld strength, good airtightness, suitable for large-scale, long-term buildings.

Application Scenarios: Large-scale, long-term buildings (such as stadiums and exhibition centers), projects with high durability requirements.

ETFE Membrane Material

Material Characteristics: Directly made from high-strength fluoropolymer (ETFE), without a substrate. Lightweight and transparent, with a light transmittance of up to 95%, enabling natural lighting. Excellent weather resistance, with a service life of 25-35 years, adaptable to extreme climates. Strong self-cleaning ability, non-stick surface reduces dirt adhesion. Excellent mechanical properties, tear-resistant and impact-resistant, suitable for inflatable structures.

Heat sealing equipment: Puxiong ETFE heat sealing machine.

Application scenarios: Transparent buildings (such as swimming pools, greenhouses), large-span inflatable roofs.