EXPANDING MATERIAL IN NONWOVEN 3 D STRUCTURE

摘要

The present application is directed at continuous filament non woven webs wherein the filaments of the web comprise an expandable thermoplastic material and mattings fabricated from said continuous filament non woven web. The web or matting can advantageously be used in sealing applications as it can be cut into the desired dimensions and inserted into a cavity. At that stage the web or matting allows for the introduction and drainage of further fluids in and from said cavity while at a later stage the extendable thermoplastic material can be activated and foamed to fill a part of or the entire cavity. The sealing prevents air water or noise from intruding into the cavity and a space behind that cavity.