Flexible web-type composite material and bags made from same

Abstract

A flexible web-shaped composite material (2) comprises a web-shaped substrate (3) containing at least in part a first thermoplastic polymer and a web-shaped nonwoven material (4) containing at least in part a second thermoplastic polymer. The web-shaped substrate (3) and the web-shaped nonwoven material (4) are connected to each other at their facing surfaces (3a, 4a), which form a connection surface, by a plurality of discrete, distributed connection points, wherein the connection points consist of particles (7) containing a third thermoplastic polymer, wherein the particles (7) adhere substantially only to the facing surfaces (3a, 4a) of the substrate (3) and the nonwoven material (4). The discrete, distributed connection points are spaced apart from each other with voids between them. The particles (7) engage positively in cavities in the nonwoven material (4).

Dependencies are inferred from the claim text.