A - Human Necessities – 01 – G
Patent
A - Human Necessities
01
G
A01G 13/02 (2006.01) A01G 1/00 (2006.01) A01G 9/10 (2006.01) B32B 27/36 (2006.01) B32B 29/00 (2006.01) C09K 17/52 (2006.01)
Patent
CA 2172893
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 mm2 and a total area corresponding 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.
Ikezawa Hideo
Kadota Masaru
Miyoshi Tomotsugu
Goudreau Gage Dubuc
New Oji Paper Co. Ltd.
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