Product and process for producing a stretchable nonwoven materia

Details Product and process for producing a stretchable nonwoven materia Product and process for producing a stretchable nonwoven materia

1972-08-22

1976-04-06

Kendell, Lorraine T.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

156183, 156229, 156290, 156306, 428221, 428224, 428284, 428286, 428296, 428298, B32B 300, B32B 522, D04H 104

Patent

active

039491285

ABSTRACT:
Fabric-like nonwoven, elastic materials of substantially continuous and randomly deposited, molecularly oriented filaments of a thermoplastic polymer are disclosed. Elasticity is achieved by causing the filaments to buckle either between spot bond areas disposed through out the material or as a result of a microcreping action and thereafter heat setting the filaments in their buckled configuration to provide a memory therefor, so that, on subsequent stretching and release of strain, the filaments will return to their buckled configuration. High bulk elastic laminates of the materials can also be prepared with ply attachment preferably being achieved by sonic bonding techniques.

REFERENCES:
patent: 3047444 (1962-07-01), Harwood
patent: 3059313 (1962-10-01), Harmon
patent: 3341394 (1967-09-01), Kinney
patent: 3352734 (1967-11-01), McIntyre
patent: 3438844 (1969-04-01), Kumin
patent: 3459627 (1969-08-01), Vosburgh, Sr.
patent: 3485695 (1969-12-01), Ness
patent: 3510389 (1970-05-01), Olson
patent: 3575784 (1971-04-01), Philips et al.
patent: 3695985 (1972-10-01), Brock et al.
patent: 3748216 (1973-07-01), Brock
patent: 3772417 (1973-11-01), Vogt

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