Nonwoven polyester fabric
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United States of America Patent
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Jun 11, 1996
Issued Date -
N/A
app pub date -
May 23, 1995
filing date -
May 13, 1992
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Nonwoven fabrics made of an aliphatic polyester having a melt viscosity of 5.0.times.10.sup.2 -2.times.10.sup.4 poises at a temperature of 190.degree. C. at a shear rate of 100 sec.sup.-1 and a melting point of 70.degree.-190.degree. C. The nonwoven fabric has biodegradability when it is buried in the ground and it is also excellent in tensile strength and tear propagation strength. Thus, the nonwoven fabric of the present invention is useful for sanitary materials, medical materials, packaging materials, agricultural covering materials, filters, oil absorption materials, materials for a daily life, padding cloth materials for clothes, cell separators, drain sheets for constructions and the like.
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