Unidirectionally stretchable elastomeric trilaminate and...

Details Unidirectionally stretchable elastomeric trilaminate and... Unidirectionally stretchable elastomeric trilaminate and...

B - Operations, Transporting

32

B

B32B 5/04 (2006.01) A61F 13/15 (2006.01) D04H 13/00 (2006.01) B32B 31/04 (1995.01)

Patent

CA 2150333

An elastomeric trilaminate fabric for use in the waist band or leg cuff of disposable diapers, training pants and other similar products. The trilaminate has a middle elastomeric web sandwiched between a pair of gatherable inelastic webs. The elastomeric web may take the form of a scrim or a film made from elastomeric material. The nonwoven webs are made from staple or bicomponent fibers which have been carded and thermal bonded or spunbond. During manufacture, the nonwoven webs are ultrasonically pattern bonded to each other while the elastomeric web is in a stretched state. The elastomeric web is sandwiched between and captured by the bonded gatherable webs. Upon release of the tension applied to the elastomeric web, it will relax to an unstretched state. As the elastomeric web contracts, the nonwoven webs gather between the bonding points. The result is a stretchable laminate which elastically returns to an unstretched state when tension is removed.

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