B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1054
B29C 59/00 (2006.01) A61F 13/15 (2006.01) B26F 1/26 (2006.01) B29C 59/06 (2006.01)
Patent
CA 1238168
ABSTRACT Method and apparatus for uniformly mnacroscopically expanding and, if desired, aperturing a plastic web. This is preferably accomplished by supporting the plastic web on a moving three-dimensional forming structure which is supported in a fluid pressure differential zone by a stationary support member. By providing a relationship between the size and pattern of the apertures in the stationary support member and the size and pattern of the apertures in the three-dimensional forming structure, substantially all of the apertures present in the forming structure are unobstructed by the stationary support member at some point during the forming structure's traverse of the fluid pressure differential zone. Thus the resultant plastic web is uniformly debossed and, if desired, apertured in the pattern of the three-dimensional forming structure.
465574
Sim & Mcburney
The Procter & Gamble Company
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