The Hot Wedge Process
The Hot Wedge heat sealing process joins together thermoplastic industrial fabrics, vinyl and films using very precise heat, speed and pressure. Hot Wedge rotary welding is a continuous process where the material pieces move across a heated metal wedge and are pulled along by a pair of drive wheels. The metal wedge delivers heat to the two sheets of material immediately before they pass between the drive wheels, where pressure is applied to seal the pieces together, producing a permanent seam that is impervious to any type of leakage. This new bond is as strong or stronger than the original material.
A heated wedge is precisely positioned at the weld point providing heat in a specific temperature range for the material that is being welded. The material is then pulled across the heated wedge where the permanent seal is made. The tightly controlled temperature of the wedge, the regulated speed and the pressure adjustments of the rotary delivery process produces a perfect weld with a constant and continuous workflow.
Hot Wedge rotary welding is a much faster sealing process than RF sealing for most products. Seam length and product size determines the wedge that is used. The wedge size increases accordingly with larger size products and longer seams allowing more flexibility for the custom manufacturing of products into unique shapes and sizes.
