PTFE-coated glass fabric, which is commonly referred to as Teflon® welding paper, is especially important in the welding process for UPVC window frames. PTFE, or polytetrafluoroethylene, is a non-adhesive material , resistant to high temperatures and chemicals.
Here are some of the key benefits of using PTFE fabrics when welding UPVC window frames :
PTFE fabrics and tapes provide a non-stick barrier to the hot plate, preventing the molten PVC from sticking to the surface. This results in clean welds with no residual molten PVC.
PTFE fabrics are designed to withstand high temperatures and abrasion, giving them a long service life. They can be used repeatedly without losing their non-stick properties.
PTFE-coated glass cloth prevents molten PVC from adhering, resulting in high-quality welds. This reduces downtime for machine cleaning and tape changes, improving overall production efficiency.
PTFE fabrics and tapes can be used with a wide range of welding techniques. PTFE fabrics and tapes can be used with various types of welding machines, thus making them highly adaptable, versatile and ideal for different applications.
The welding process for UPVC window frames may differ based on the tool used. Below are some of the commonly used welding methods:
Single-spot welders : Single-spot welders are equipped with a single welding head, allowing one window joint to be welded at a time. These machines are often used for customised window profiles or by small companies with relatively low production volumes.
Two-spot welders : Two-spot welders allow two window seals to be welded simultaneously. They improve production efficiency compared with single-spot welders while offering a high quality weld.
Multi-spot welders : Multi-spot welders, such as four-spot welders, are used in high-volume installations. They can seal a complete window or door assembly at four corners in a single operation. Some automated welders can even have more welding points.
Selecting the appropriate materials and adhering to the recommended practices are crucial in optimising the welding process of UPVC window frames. The following tips can improve the effectiveness and quality of the welding process :
1. Select high quality PTFE fabrics, that offer excellent heat resistance, durability and resist sticking to molten PVC. Ensure that you choose products of high quality to guarantee strong and clean welds.
2. Ensure that you have the correct tape thicknesses and widths : It is possible that various welding machines require particular tape thicknesses and widths. To achieve precise and efficient welding, you must use the appropriate tape thicknesses and widths that are compatible with your equipment.
We offer various qualities of PTFE fabrics and designs, including sleeves, endless films, pre-cuts, and self-adhesive versions. We provide pre-cut sheets of all sizes for multiple welding machine brands.
3 Regularly maintain your equipment : Regular maintenance is crucial to maintaining the optimum performance of your welding equipment. To avoid costly downtime, ensure that you clean the heating plates, replace worn ribbons, and perform any necessary repairs.
The use of PTFE coated glass fabric in the welding process of UPVC window frames offers numerous benefits, such as producing clean, strong welds, increasing production efficiency, and ensuring long-term durability. You can speed up the welding process and get excellent results by following best practices and carefully choosing the right materials.