Microfibre web products
AssigneeKimberly-Clark Corporation
InventorsMansoor A. Minto, Dennis G. Storey
Life of this patent
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Abstract
A non-woven web made from melt blown microfibres which is formed or provided with apertures by, for example, hot needling or by passing the web between differentially speeded rolls. If the web is used for wiping, the apertures help to retain fluid and enhance the wiping properties for oil.
Claims10
A nonwoven fabric consisting of a web comprising meltblown thermoplastic microfibers and including thermal bond areas formed or provided with apertures penetrating through the fabric within substantially all of the thermal bond areas wherein the fibers are bonded together around the circumference of the bond areas, said apertures constituting between 1 and 40% of the surface area of the fabric.
A nonwoven fabric consisting of a web comprising meltblown thermoplastic microfibers and including thermal bond areas formed or provided with apertures in substantially all of said bond areas, said apertures having a circular, diamond or rectangular shape and constituting between 1 and 40% of the area of the fabric and wherein the fibers are bonded together around the circumference of the apertures.
A method of making a nonwoven fabric consisting of a web comprising meltblown fibers comprising the steps of,
- extruding a molten polymeric material producing a stream of meltblown polymeric microfibers;
- cooling the fibers or allowing them to cool;
- forming or consolidating said fibers into a fabric;
- forming thermal bond areas in said fabric;
- aperturing said fabric providing apertures penetrating through the fabric in substantially of all said bond areas, said apertures constituting from 1 to 40% of the area of said fabric and being surrounded by fused fibers.
Dependencies are inferred from the claim text.