Vertical offset flute design Over 20 years ago Hewitech developed the first welded film cooling fills in PP - shaped, extruded films in a single step from the melt. Films with a thickness distribution lead to high-strength blocks - with sharply reduced material input! Deformation of flat films is history. Today Hewitech manufactures not only film cooling fills of PP but also of welded PVC - free of adhesives and solvents. Hewitech dispenses with adhesives and solvents which pollute the environment PP up to 75°C continuous use temperature; PVC up to 55°C produced from PP/PVC granulate with high percentage of UV protection additives on-site fabrication to reduce transport costs possible thanks to automatic welders technical support for different applications German product Features and advantages: - OS21 combines the low pressure loss of vertical channels with the high thermal capacity of cross-flow fills - film thickness distribution directly from the melt - giving extremely high strengths and no possibility of reverting -to original shape at elevated temperatures - with same geometry and weight: PP -exhibits higher strength than PVC because of greater film thickness - fully automated welding - very - inexpensive and substantially greater strength than 'mechanical pressing' _

technical data effective surface width of channels material (UV-stabiiized) standard dimensions void weight of new plastic density of plastic thickness of foil < 1.5mm (average thickness before forming) PP: -20 to 75 * ; PVC: 0 to 55 *; (*): further on request Hewitech fills also have the following distinguishing features: - computer program : see www.hewitech.com - Hewitech produces in conformity with REACH: the raw materials used are listed and approved - this has been the law in Europe since 2007 - polypropylene on account of its particularly good chemical and UV resistance - PP is environmentally...