Breathable and waterproof lining structure for footwear and...

Details Breathable and waterproof lining structure for footwear and... Breathable and waterproof lining structure for footwear and...

2008-01-08

2008-01-08

Piziali, Andrew T (Department: 1794)

Fabric (woven, knitted, or nonwoven textile or cloth, etc.)

Woven fabric

Including a foamed layer or component

C442S062000, C442S076000, C442S085000, C442S086000, C442S152000, C442S164000, C442S172000, C442S221000, C442S315000, C442S370000, C442S373000, C036S055000, C428S304400

Reexamination Certificate

active

07316985

ABSTRACT:
A waterproof and breathable lining structure includes a sheet-like waterproof and breathable foaming cushion layer made of a composition of a predetermined amount of low density polyethylene (LDPE) and a predetermined amount of foaming agent such as azodicarbonamide (ADCA), and a fabric lining layer integrally adhered to one side of the cushion layer to form the lining structure. The cushion layer is made by a process including the steps of: (a) palletizing raw materials including the low density polyethylene and the foaming agent such as Azodicarbonamide (ADCA); (b) extruding the palletized raw material to make a solid sheet; (c) cross-linking the solid sheet by an E-beam to form an irradiated matrix; (d) foaming the irradiated matrix into the sheet-like foaming cushion layer.

REFERENCES:
patent: 3608006 (1971-09-01), Hosoda et al.
patent: 4435346 (1984-03-01), Ito et al.
patent: 4446254 (1984-05-01), Nakae et al.
patent: 5169712 (1992-12-01), Tapp
patent: 5242634 (1993-09-01), Matsumoto et al.
patent: 6517764 (2003-02-01), Shibata et al.
patent: 56146732 (1981-11-01), None
patent: 56146732 (1981-11-01), None
Wikipedia information about “low-density polyethylene” (no date).

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