Stock material or miscellaneous articles – Structurally defined web or sheet – Including grain – strips – or filamentary elements in...
Patent
1978-03-22
1979-10-09
McCamish, Marion E.
Stock material or miscellaneous articles
Structurally defined web or sheet
Including grain, strips, or filamentary elements in...
28206, 28207, 428234, 428300, B32B 512
Patent
active
041706765
ABSTRACT:
Process and apparatus for producing and the resulting nonwoven fabric adaptable for use as blankets and the like is characterized by increased production speed resulting in a more economical fabric, as follows. A bottom layer of at least one carded web is deposited with the fibers thereof oriented in the lengthwise direction on a moving conveyor driven at the same speed of travel as the carded web is produced. A reinforcing middle layer is preferably formed of a plurality of yarns cross-lapped onto the bottom layer for orienting the yarns in generally the widthwise direction. A top layer of at least one carded web is deposited onto the middle layer with the fibers thereof oriented in the lengthwise direction. The three-layer fabric is needled with from one to five needling machines depending upon the speed of operation thereof compared to the speed of formation of the fabric on the conveyor for forming needled fiber entanglements in the fabric interlocking the fibers with each other and forming an integrated needled nonwoven fabric. Production of the nonwoven fabric is thus performed at the increased speed of production equal to the speed of operation of the carding machines.
REFERENCES:
patent: 3257259 (1966-06-01), Law
patent: 3260640 (1966-07-01), Owen
McCamish Marion E.
National Distillers & Chemical Corporation
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