Method of making spunbonded webs from linear low density polyeth

Details Method of making spunbonded webs from linear low density polyeth Method of making spunbonded webs from linear low density polyeth

1986-03-14

1987-02-17

Bell, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

2642108, 264DIG75, 428288, 428296, 5263482, 5263486, C08F21000

Patent

active

046440453

ABSTRACT:
Spunbonded nonwoven webs having excellent properties, particularly softness, can be made from linear low density polyethylene having a critical combination of certain key properties. These properties are percent crystallinity, cone die melt flow, die swell, relation of die swell to melt index, and polymer uniformity. The polyethylene is extruded through a spinneret at a temperature between about 185.degree. and 215.degree. C. and drawn through an air gun to form the spunbonded web.

REFERENCES:
patent: 3692618 (1972-09-01), Dorschner et al.
patent: 4298713 (1981-11-01), Morita et al.
patent: 4434204 (1984-02-01), Hartman et al.
patent: 4554202 (1985-11-01), Komei et al.

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