How To Weld Vinyl Sheets Together

Apply a uniform bead 1 8 to 1 4 wide centered at the seam.

How to weld vinyl sheets together. Before you start the actual weld pin loose pieces of plastic together by melting the ends of the joint. Roll the edges of both sheets away from the seam. Fit a tack welding nozzle on your welding gun then apply a little bit of heat. Rapid angular oscillations are applied to heat the plastic parts to be joined.

As the needle is drawn along the seam the sheets separate slightly which will allow the fluid to flow between them. Start at a corner and slowly pull the vinyl up at an angle making sure all the parts of your design remain attached to the carrier sheet. In addition the two sheets being welded together are farther apart so the installer is filling a gap with weld rod instead of welding the edges of the two pieces together. Using the low setting on my heat gun gently heat up the two sheets till they get tacky.

If you notice part of your design lifting up you can just hold it down with your finger while you pull off the vinyl surrounding it. This will keep the plastic from moving as you complete the weld. Then apply heat again. Notice the groove in photo 5 below has a more pronounced groove on one side of this failed heat weld.

Spread vinyl floor adhesive on the floor with a 1 16 by 3 32 inch notched trowel. Allow the adhesive to sit for the set time specified on the. The heat in the extruded bead is sufficient to cause it to weld to the adjacent surfaces. Then immediately apply pressure to fuse them together allow to cool down if too hot.