HF welding of PVC and other plastic eyelets
HF welding is an abbreviation for high frequency welding (also often known as Radio frequency welding (RF welding) or electrical heat sealing) is a manufacturing process where two plastic parts are welded together using an electromagnetic field. You can read more on the actual process here.
Plastic eyelets made of PVC (Vinyl) and a number og other materials are ideal candidates for mounting with HF welding.
Plastic and PVC eyelets that are HF welded will partially melt and fuse together with the foil and create a strong flexible bond. This is especially true when working with mesh materials - e.g. in advertising banners, sun screens or building wraps.
Common products manufactured with high frequency welding are tarpaulins, tents, ceilings, advertising banners, waterbeds, inflatable boats, medical and especially blod and urine-bags, tensile structures, conveyor belts, rain clothing etc.
How to weld plastic eyelets with HF welding
Three main options exists for welding of PVC and plastic eyelets: Using a standalone tools, a manuel eyelet setter / punch, or using a fully automated machine:
The three main parts involved in High frequency welding are:
Carmo supplies electrodes for each of our weldable componenents and a series of machines for automatic welding of eyelets.
Advantage of HF welding PVC and plastic eyelets
The great advantage of HF welding is the speed of welding: The material is heated from the inside and fuses quickly, within few seconds.
Compared to high frequency welding, a lot of other methods (hot air, infrared radiation, laser) the energy /heat is supplied from the outside. This means that the heat must first penetrate the material in order to heat the contact-surfaces, thus risking to burn the top layer of the welded material.
You could compare this to heating your food in the microwave oven vs in a traditional oven.
Why use PVC and plastic eyelets?
Carmos HF weldable plastic eyelets are strong, flexible and do not rupture. We blend the right composition of raw materials to meet your specific demands for performance, weather conditions, UV radiation exposure, etc.
Compared to metal grommets, welded plastic eyelets will fuse together with the foil and result in a joint that is significantly stronger and can withstand significantly higher pull forces. This is especially true when working in mesh materials.
They offer offer more advantages for the outdoor vinyl banner producer, e.g.:
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