Micro-denier nonwoven materials made using modular die units

Details Micro-denier nonwoven materials made using modular die units Micro-denier nonwoven materials made using modular die units

1997-07-23

2000-09-05

Raimund, Christopher

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428219, 156167, B32B 2714, D04H 316

Patent

active

061140171

ABSTRACT:
A series of nonwoven webs and the processes for their production are disclosed. The resultant webs have equal or superior strength characteristics to conventional nonwoven fabrics made using spunbond processes but their constituent fibers are of a finer diameter. This is accomplished through a process of melt blowing a nonwoven fabric made from at least one polymer at low polymer flows per die hole and low air and polymer pressures using modular die technology to provide a die with one or more rows of die holes. The nonwoven fabric of this invention may be used in products such as diapers, feminine hygiene products, filters, progressive layer filters, adult incontinence products, wound dressings, bandages, sterilization wraps, surgical drapes, geotextiles, wipers, insulation and other related products.

REFERENCES:
patent: 4375718 (1983-03-01), Wadsworth et al.
patent: 5232770 (1993-08-01), Joseph

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