A procedure to join a first layer of a polymer laminar material, not woven, fibrous, to a second load of a thermoplastic polymeric laminar material, compatible. (Machine-translation by Google Translate, not legally binding)

摘要

A process for joining a first layer of a fibrous, nonwoven polymeric sheet material to a second layer of a compatible thermoplastic polymer sheet material, the process of which comprises the steps of: To. Superimposing, forming an overlap, the first and second layers of polymeric sheet material to form a combined sheet; B. Applying at least one jet of hot polymeric material on the surface of said second layer of polymeric sheet material to form a continuous and narrow cord of hot polymeric material and C. After a sufficient time for the hot polymeric material of said cord to begin to melt said first layer of nonwoven polymeric sheet material, to cool said cord by contacting it with a smooth solid surface, maintained at a temperature below the solidification temperature of the cord. Polymeric material in said cord, and simultaneously deforming said cord, pressing the cited solid surface against the upper surface of said cord with sufficient force for the hot polymeric material of the cord to infiltrate said first layer of nonwoven polymeric sheet material and bind to the edges of said cord to extend beyond the region where the polymeric material of the cord has infiltrated said first layer of nonwoven polymeric sheet material. (Machine-translation by Google Translate, not legally binding)