Paper making fabric woven from polyester monofilaments having hydrolytic stability and improved resistance to abrasion
AssigneeShakespeare Company
InventorsTimothy E. McKeon, James H. Moreland, Michelle Diaz-Kotti
Life of this patent
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Abstract
A polyester fabric is formed from a plurality of woven polyester monofilaments. The fabric exhibits improved hydrolytic stability and abrasion resistance. The woven polyester monofilaments are manufactured from a polymer blend comprising at least about 75 percent by weight of a polyester resin, up to about 20 percent by weight of a melt extrudable fluoropolymer resin, and more than 1.5 percent by weight and up to about 5 percent by weight of a hydrolytic stabilizing agent, to form 100 percent by weight of a polymer blend. Such fabrics have utility as fabrics for the dryer sections of paper making machines.
Claims9
A fabric having improved hydrolytic stability and abrasion resistance comprising:
- a plurality of woven polyester monofilaments;
- said polyester monofilaments being formed from a polymer blend comprising:
- at least about 75 percent by weight of polyethylene terephthalate resin;
- up to about 20 percent by weight of a melt extrudable fluoropolymer resin;
- and
- more than about 1.5 percent by weight and up to about 5 percent by weight of a hydrolytic stabilizing agent, to form 100 percent by weight of said polymer blend.
A fabric having improved hydrolytic stability and abrasion resistance comprising:
- a plurality of woven polyester monofilaments;
- said polyester monofilaments being formed from a polymer blend comprising:
- from about 75 to about 98.3 percent by weight of polyethylene terephthalate resin;
- from about 0.2 to about 20 percent by weight of a melt extrudable fluoropolymer resin;
- and
- more than about 1.5 percent by weight and up to about 5 percent by weight of a hydrolytic stabilizing agent, to form 100 percent by weight of said polymer blend.
Dependencies are inferred from the claim text.