Welded airbag cushion comprising sewn reinforcement seams

摘要: The present invention relates to a method utilizing welds, reinforced with sewn seams, adhere two fabrics together form an inflatable airbag cushion. Although welded seams provide better and more easily produced attachment points between multiple layers of fabrics, not mention improved manners reducing air or gas permeability as such points, the utilization adjacent areas provides stronger reinforcement, thus reliable nonpermeable fabrics. Seam welding generally concerns utilisation film on underside fabric which, upon contact second, film-treated exposure high frequency energy, forms bead polymeric material at point layers. Lower numbers may be utilized permit sufficient reinforcement if size formed thorough sealing adhesion Such specific fabric, well bead-size are encompassed within this invention.