Winding core for webs and rolls on same
Assignee3M Innovative Properties Company
InventorsJoshua M. Retterath, Ronald W. Ausen, Ramasubramani Kuduva Raman Thanumoorthy
Life of this patent
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Abstract
A winding core comprising: (a) a cylindrical tube having an outer surface and a longitudinal axis; and (b) a core covering comprising a polymeric netting having opposing interior and exterior sides disposed on the outer surface of the cylindrical tube, wherein the polymeric netting comprises an array of a plurality of polymeric ribbons and a plurality of polymeric strands arranged in sheet form with each polymeric ribbon bonded to one or two adjacent polymeric strands and each polymeric strand bonded to one or two adjacent ribbons. Also, rolls of web material wound upon such cures in roll form.
Claims4
A film winding core comprising:
- (a) a cylindrical tube having an outer surface and a longitudinal axis;
- and (b) a core covering comprising a polymeric netting having opposing interior and exterior sides disposed on the outer surface of the cylindrical tube, wherein the polymeric netting comprises an array of a plurality of polymeric ribbons and a plurality of polymeric strands arranged in sheet form with each polymeric ribbon bonded to one or two adjacent polymeric strands and each polymeric strand bonded to one or two adjacent ribbons, wherein:
- (1) each polymeric ribbon has a width, height, and length such that the length is longer than the width and the height and is of elongate form defining a longitudinal axis;
- (2) each polymeric strand has a width, height, and length such that the length is longer than the width and the height and is intermittently bonded multiple times to one or two adjacent polymeric ribbons;
- and
- (3) the interior side of the polymeric netting is facing the outer surface of the cylindrical tube.
Dependencies are inferred from the claim text.