Network structures and methods of making same

Details Network structures and methods of making same Network structures and methods of making same

B - Operations, Transporting

29

D

18/1002, 18/547

B29D 28/00 (2006.01) D01D 5/42 (2006.01) B29C 59/04 (2006.01)

Patent

CA 1055672

Abstract of the Disclosure Methods of making network structure include forming on one side of a sheet of thermoplastic polymer a plurality of parallel continuous main ribs and forming on the other side of the sheet in a different direction a plurality of continuous parallel tie ribs, with the ratio of cross-sectional area of the main ribs to the tie ribs preferably being 1.5:1 or greater and the ratio of the height of the main ribs to the thickness of the webs between the main ribs being 3:1 or greater. The ribbed sheet thus formed is drawn in either one direction or in two preferably perpendicular directions to open the sheet into a network structure and to orient the main ribs and preferably also to orient the tie ribs.

190207

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