Method for producing a variable density, corrugated...

Details Method for producing a variable density, corrugated... Method for producing a variable density, corrugated...

B - Operations, Transporting

32

B

B32B 3/28 (2006.01) D04H 1/74 (2006.01) D04H 11/04 (2006.01) D04H 13/00 (2006.01) E04B 1/74 (2006.01) E04C 2/34 (2006.01) E04B 1/76 (2006.01)

Patent

CA 2296876

A corrugated fiberfill structure is provided including one fibrous web folded to form a plurality of pleats having alternating crests and bases. Each pleat has a pair of legs each having first and second leg surfaces. The first leg surface of one leg is in intimate contact with the first leg surface of an adjoining leg of the pleat while the second leg surface of the leg is in intimate contact with the second leg surface of an adjoining leg of an adjacent pleat over a portion of each leg. Some crests and some bases define respectively first and second structural surfaces, with a distance between the structural surfaces defining a thickness of the structure. Spaces are left between contact sites of the legs. The structure thus has a density that varies across its thickness.

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