Binder, and apparatus and method for forming fiber-based item
AssigneeSeiko Epson Corporation
InventorsTakumi SAGO, Masahiko NAKAZAWA, Yoshihiro UENO
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Abstract
A binder that is used for forming fiber-based items and that binds fibers contains a polyester and an aggregation inhibitor. The polyester contains a structural unit derived from polyethylene terephthalate, a structural unit derived from at least one polyvalent carboxylic acid, and a structural unit derived from at least one polyhydric alcohol including trimethylolpropane. The binder exhibits a viscosity coefficient higher than 3500 P at 150° C. in dynamic viscoelasticity measurement.
Claims6
A binder that is used for forming fiber-based items and that binds fibers, the binder comprising:
- a polyester containing a structural unit derived from polyethylene terephthalate, a structural unit derived from at least one polyvalent carboxylic acid, and a structural unit derived from at least one polyhydric alcohol including trimethylolpropane;
- and
- an aggregation inhibitor,
- wherein
- the binder exhibits a viscosity coefficient higher than 3500 poises at 150° C. in dynamic viscoelasticity measurement.
A method for forming a fiber-based item, comprising:
- mixing fibers and a binder containing a polyester and an aggregation inhibitor to prepare a mixture, the polyester containing a structural unit derived from polyethylene terephthalates, a structural unit derived from at least one polyvalent carboxylic acid, and a structural unit derived from at least one polyhydric alcohol including trimethylolpropane;
- and
- heating the mixture,
- wherein
- the binder exhibits a viscosity coefficient higher than 3500 poises at 150° C. in dynamic viscoelasticity measurement.
Dependencies are inferred from the claim text.