Process for making an embossed web

摘要

A process for making an embossed web. A precursor web is provided between a forming structure and a static pressure plenum. The forming structure has a plurality of discrete protruded elements. Pressure is provided by the static pressure plenum against the precursor web and the forming structure to conform the precursor web to the discrete protruded elements of the forming structure to form the embossed web. The resulting embossed web has a plurality of discrete extended elements having open proximal ends.

主权项

1. A process for making an embossed film web, comprising:
feeding a precursor film web between a static gas pressure plenum and a forming structure comprising a plurality of discrete protruded elements, the discrete protruded elements having a height of at least substantially equal to a thickness of the precursor web, and wherein the static gas pressure plenum creates static pressure conditions; and applying static pressure from the static gas pressure plenum against the precursor web opposite the forming structure creating a pressure differential across the precursor web sufficient to conform the precursor web to the discrete protruded elements of the forming structure, thereby forming the embossed web comprising a plurality of discrete extended elements having open proximal ends; and applying pressure from a second pressure source against the precursor web sufficient to further conform portions of the precursor web registered to the same discrete protruded elements of the forming structure, wherein the pressure from the second pressure source is applied sequentially after the static pressure is applied against the precursor web from the static gas pressure plenum.