Stretchable nonwoven fabrics and method for producing same

Details Stretchable nonwoven fabrics and method for producing same Stretchable nonwoven fabrics and method for producing same

1989-10-12

1993-07-13

Cannon, James C.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

26 185, 28104, 428296, 428360, 428370, 156 84, D04H 146, D04H 148, D04H 150

Patent

active

052272249

ABSTRACT:
A stretchable nonwoven fabric is provided, in which a uniform web comprising 70 to 100% by weight of polypropylene base heat-bondable composite fibers and 0 to 30% by weight of other organic fibers and having a web heat shrinking percentage "A" of 50% or lower at 100.degree. C. and a web heat shrinking percentage "B" of 50% or higher at 120.degree. C. provided that a difference "B"-"A" between the latter and the former is 20% or higher, the fibers being uniformly entangled together, has been shrinked as a result of sufficient crimping and more increased entanglement of the above composite fibers imparted through further heat-treatment, and which has an elastic recovery-at-30%-elongation of 80% or higher in both the warp and weft directions. This nonwoven fabric has no density variation, no crease, and excellent stretchability.

REFERENCES:
patent: 4172172 (1979-10-01), Suzuki et al.
patent: 4211819 (1980-07-01), Kunimune et al.
patent: 4426420 (1984-01-01), Likhyani
patent: 4551378 (1985-11-01), Carey
patent: 4789592 (1988-12-01), Taniguchi
Abstract of Japanese Patent No. 76/15141.

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