Patent ID: 6440581
Filing Date: 2002-08-27
Classification: B29C,B29K,C22C,Y10T

Abstract:
An improved performance welding bar placed within a welding machine for the welding of thermoplastic material, suitable for each of the two lower (11) and upper (12) welding bars, among said bars (11, 12) said material is moved along by at least one pair of lower (14) and upper (15) supply rollers, placed on top of each other, said two welding bars (11, 12) being moved backward and forwards between themselves by a control group (20), wherein said welding bar (11, 12) is made from a magnesium-zinc aluminum alloy, the weight percent of zinc is 5.0-6.5% and the weight percent of magnesium is 2.0-3.0%.