Resilient, three dimensional polymeric film comprising open and closed capillaries

摘要

The present invention relates to resilient, three dimensional, perforated plastic webs which allow passage of water vapour, and preferably of air, and are resistant to the transmission of aqueous fluids at least in one direction. According to the present invention the perforated plastic webs consist of a liquid impervious polymeric film having open and closed capillaries. More than half of the capillaries are closed and preferably shorter than the capillaries with apertures, and provide the resilient three dimensional web with an increased resistance to crush and to collapse of the capillaries under compression. <IMAGE>