Back to results
US 4,789,699 AGranted
Ambient temperature bondable elastomeric nonwoven web
AssigneeKimberly-Clark Corporation
InventorsJohn S. Kieffer, Tony J. Wisneski
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeKimberly-Clark Corporation
InventorsJohn S. Kieffer, Tony J. Wisneski
Estimating the term…
An extrudable composition for forming nonwoven elastomeric material having pressure sensitive adhesive properties, nonwoven elastomeric sheet material (e.g., fibrous nonwoven webs) formed of such composition, stretch bonded laminates using such sheets, and methods of forming such sheets and such laminates, are disclosed. The composition includes an elastomeric polymer and a tackifying resin, and can also include a polyolefin. The nonwoven sheet material can be a meltblown nonwoven web. The laminate can be formed by tensioning the elastomeric sheet material and bonding a gatherable web (e.g., a spunbond polypropylene web) to the tensioned sheet material by application of pressure, the bonding being accomplished due to the adhesivity of the elastomeric sheet material and without application of heat for softening the sheet material and/or gatherable web.
A nonwoven elastomeric web comprising fibers formed from a blend including a thermoplastic elastomeric polymer and a tackifying resin, wherein said web is adapted to form a bond to a sheet of spunbonded polypropylene in the temperature range of from about 60 degrees F. to about 180 degrees F., said bond having an internal cohesion of at least about 3.9 kilograms.
A nonwoven elastomeric web comprising fibers formed from a blend including a thermoplastic elastomeric polymer and a tackifying resin, wherein said web is adapted to form a bond to a sheet of spunbonded polypropylene in the temperature range of from about 100 degrees F. to about 140 degrees F., said bond having an internal cohesion of at least about 3.9 kilograms.
A nonwoven elastomeric web comprising fibers formed from a blend including a thermoplastic elastomeric polymer and a tackifying resin, wherein said web is adapted to form a bond to a sheet of spunbonded polypropylene at about ambient temperature, said bond having an internal cohesion of at least about 3.9 kilograms.
Dependencies are inferred from the claim text.