Fabric (woven – knitted – or nonwoven textile or cloth – etc.) – Nonwoven fabric – Including an additional nonwoven fabric
Patent
1996-03-28
1998-06-02
Cannon, James C.
Fabric (woven, knitted, or nonwoven textile or cloth, etc.)
Nonwoven fabric
Including an additional nonwoven fabric
28104, 111199, 111200, 442387, 442412, 442414, 428340, A01G 1300, B32B 306, B32B 506
Patent
active
057599297
ABSTRACT:
A bio-degradable composite nonwoven fabric for plant cultivation includes a wood pulp paper sheet laminated on a bio-degradable aliphatic polyester filament nonwoven fabric, wherein the polyester filaments and the pulp fibers are entangled to each other and a plurality of spot regions which are spaced from each other, are substantially free from the pulp fibers and have a decreased distribution density of the polyester filaments of 30 to 50%, an area of 0.16 to 16 mm.sup.2 and a total area coresponding to 5 to 60% of the total surface area of the composite nonwoven fabric, are formed. The polyester filament distribution density is defined as the ratio of the total area of the polyester filaments appearing within the spot regions to the total surface area of the spot regions, determined from photographs of the spot regions.
REFERENCES:
patent: 4808467 (1989-02-01), Suskind et al.
patent: 5026587 (1991-06-01), Austin et al.
Chemical Abstracts: 125 (14) 170169d.
Ikezawa Hideo
Kadota Masaru
Miyoshi Tomotsugu
Cannon James C.
New Oji Paper Co. Ltd.
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