Incrementally-stretched thermoplastic films with enhanced look and feel and methods for making the same

摘要

Methods of increasing the perceived thickness and strength of a thermoplastic film include incrementally stretching thermoplastic films in the machine direction. In one or more implementations, methods of incrementally stretching thermoplastic films include reducing the gauge of the films while increasing a loft of at least a portion of the film. The methods can involve cold stretching the films and imparting rib patterns and alternating peaks and valleys into the film. The linear ribs can have alternating thick and thin gauges.

主权项

1. A method of creating a machine-direction incrementally-stretched film with one or more of increased loft, perceived strength, and an improved tactile fee, the method comprising:
providing a film of a thermoplastic material; and passing the film through a pair of cold machine direction ring rollers in a manner that causes the pair of cold machine direction ring rollers to:
intermittingly stretch the film and thereby create a ribbed pattern including thick linear ribs and thinner stretched linear ribs, the thick linear ribs and the thinner stretched linear ribs both extending in the transverse direction across the film, the thinner stretched linear ribs being of substantially uniform thickness, andcreate a plurality of peaks and valleys only in the thinner stretched linear ribs, the plurality of peaks and valleys extending generally in the machine direction.