Method of manufacturing a foam fibrillated fibrous web from an i

Details Method of manufacturing a foam fibrillated fibrous web from an i Method of manufacturing a foam fibrillated fibrous web from an i

1973-11-15

1976-07-13

Anderson, Philip

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

By mechanically introducing gas into material

156 79, 156229, 156306, 260 25E, 264 53, 264 54, 264210R, 264DIG8, 428107, 428523, 428910, B29D 724, B29D 2700

Patent

active

039694720

ABSTRACT:
Non-woven fabrics are produced from oriented foam fibrillated webs contaning 50 to 98 wt. % polypropylene and 2 to 50 wt. % polystyrene. The webs are assembled in a plurality of layers and then bonded by heat and pressure either with or without the presence of an adhesive. In a preferred aspect films especially of polyethylene or ethylenevinyl acetate copolymers are used as the bonding agent.

REFERENCES:
patent: 3231524 (1966-01-01), Simpson
patent: 3413244 (1968-11-01), Landis et al.
patent: 3539666 (1970-11-01), Schirmer
"The Naming and Indexing of Chemical Compounds from Chemical Abstracts," Introduction to the Subject Index of vol. 56, Washington, D. C., American Chemical Society, 1962, pp. 12n-15n, 37n-40n, 44n, 45n, 87n-89n, 94n, 95n.
Encyclopedia of Polymer Science and Technology, vol. 5, Section "Differential Thermal Analysis," New York, Interscience, c1966, pp. 37-57.
Miller, M. L., "The Structure of Polymers," New York, Reinhold, c1966, pp. 286-288, 479-480, 524-535.
The Condensed Chemical Dictionary, Eighth Edition, revised by Gessner G. Hawley, New York, Van Nostrand Reinhold, c1971, p. 82.
Muus, Laurits T., N. Gerard McCrum, and Frank C. McGraw, "On the Relationship of Physical Properties to Structure in Linear Polymers of Ethylene and Propylene," in SPE Journal, May 1959, pp. 368-372.

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