TILES and ROLLS HEAT WELDING PROCESS Minimum 12 hours after gluing HEAT WELDING FOR ROLLS Leave a small gap (thickness of a credit card) between the sheets during the gluing process HEAT WELDING PROCESS: Heat welding is a three phases process after the flooring has been laid. • 1 - A GROOVING OR ROUTING FOR ISOPHONIC AND /OR FOAMBACKING PRODUCTS Groove all the Solid PVC layers until the fibreglass chamfer All solid PVC layers Foam backing FOR HOMOGENEOUS AND COMPACT PRODUCTS Grooving Groove 2/3 of ALL the compact solid PVC layers chamfer 2/3 of ALL the compact solid PVC layers GROOVING and ROUTING TOOLS MANUAL GROOVE-CUTTING Tools required: Triangular scraper and a steel rule Chamfering Width: 3.3 to 3.5 mm Depth: 1.5 to 1.8 mm Profil of a circulat saw blade ELECTRIC GROOVER / ROUTING MACHINE Electric grooving machine equipped with a 3,3 mm width circular plate • 2 - HEAT WELDING Note: Always practice on a scrap piece of material first to assure proper temperature and speed. Doing so will prevent failures. Manual weld with a SPEED NOZZLE Weld with welding robot ( required on large project) Use a Universal or Unifloor type Leister welder with electronically controlled hot air burner air with special multiple fine jets Nozzle reference: ROMUS : 95254 JANSER : 225 860 040 LEISTER : 105 407 For flooring with a photoreticulated surface treatment (Protecsol®, PU), use the Rapid Ultra nozzle, diameter 5 mm, air inlet 0.9 mm, ref.: 224 800 007 from Janser or the narrow nozzle on the automatic welder. TRIMMING WELD ROD Trimming must be done in two passes Using a trimming tool sharpen in the middle only, such as the Mozart, is recommend: First stage: Has to be done with with the thickness guide Second stage: Second trim has to be done with the trimmer only This method prevents concave welds and must be done when the rod is cold. Available from Gerflor Réf. : 0561 0001 Spare blade: Réf. : 0542 0001 HEAT WELDING THE WALL COVERING Fixing lengths Chamfering Mural Ultra: Gap between lengths: 1 mm + 0.5 - 0 mm Tools Use Ensures that joints are uniform. Eliminates traces of adhesive that prevent the welding rod from fusing Triangular scraper Angle the triangular scraper so that each edge is chamfered separately and identically. Chamfering may require several passes. Welding Hot Jet S or Leister Triac type fitted with a Rapid Ultra nozzle CR 40 rod: Air gun: Hot Jets: position 4 (80 l of air/ mn) Leister Triac:230 l of air / mn Temperature: 450 to 500°, position between 4 and 5 Trimming Slim levelling spatula Mozart levelling spatula 1/4 moon cutter + cutting guide A levelling spatula sharpened in the middle trim only the rod and avoids cutting the material Fixing lengths Taradouche Mural: Gap between lengths: 1 mm + 0.5 - 0 mm Tools Use Ensures that joints are uniform. Eliminates traces of adhesive that prevent the welding rod from fusing Triangular scraper The thikness of this material requires each selvedge to be chamfered separately with a triangular scraper Chamfering Welding Making flush Comments The Lesrecommended outils tools are available recommandés from Janser, Romus sont disponibles orchez Wolff JANSER ou ROMUS ou WOLFF Hot Jet S type fitted with a Rapid Ultra nozzle CR 41 rod. Hot air: position 4 (80 l of air/mn). Temperature: 450 to 500°, position between 4 and 5. Leister Triac fitted with a special nozzle Hot air: 230 l /mn. Temperature: position between 4 and 5. The nozzle should be cleaned after every weld. Slim or Mozart levelling spatula 1/4 moon cutter + levelling guide A levelling spatula sharpened in the middle trim only the rod and avoids cutting the material. HEAT WELDING FOR TILES Tiles must be tight Tiles must be hot welding as soon as they have a format more than 500 x 500 mm For welding tiles, proceed as follows: • Chamfer, weld and trim all in the same way eg: crossway before starting again to groove, weld and trim on the other side.eg: lengthway. This method avoid weld missing at the cross tiles.