Method of producing abrasive fibers
AssigneesKanebo, Ltd., Kanebo Synthetic Fibers Ltd.
InventorsMasao Matsui, Hiroshi Naito, Takao Osagawa
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Abstract
A method of producing abrasive fibers is disclosed, which comprises providing a conjugate fiber comprising at least one abrasive layer containing abrasive particles and at least one coating layer substantially covering the abrasive layer, and removing at least a part of the coating layer from the conjugate fiber with a solvent or a decomposer to expose at least a part of the abrasive layer from the coating layer.
Claims22
A method of producing abrasive fibers, which comprises providing a conjugate fiber comprising at least one abrasive layer composed of a polymer containing at least 20% by weight of abrasive particles and at least one coating layer substantially covering the abrasive layer, said coating layer being composed of a polymer containing substantially no abrasive particles, and removing at least a part of the coating layer from the conjugate fiber with a solvent or a decomposer to expose at least a part of the abrasive layer from the coating layer.
A method of producing abrasive fibers, which comprises:
- spinning a conjugate fiber having a diameter of not more than 200 micrometers and comprising at least one internal abrasive layer substantially completely enclosed by an external coating layer, said abrasive layer consisting essentially of a blend of from 20 to 80 wt.% of abrasive particles having a particle size of not more than 100 micrometers and the balance is a binder of thermoplastic polymer, said coating layer being free of abrasive particles and consisting essentially of a thermoplastic polymer which can be dissolved or decomposed at a faster rate than said binder, the volume ratio of said coating layer in the conjugate fiber being not more than 50%;
- drawing said conjugate fiber and thereafter dissolving or decomposing said coating layer so as to expose not less than 30% of said abrasive layer.
A method of producing abrasive fibers, which comprises:
- spinning a conjugate fiber having a diameter of not more than 200 micrometers and comprising at least one internal reinforcing layer made of a thermoplastic polymer, an abrasive layer at least partially covering and adhered to said reinforcing layer and an external coating layer substantially completely enclosing said reinforcing layer and said abrasive layer, said abrasive layer consisting essentially of a blend of from 20 to 80 wt.% of abrasive particles having a particle size of not more than 100 micrometers and the balance is a binder of thermoplastic polymer, said coating layer being free of abrasive particles and consisting essentially of a thermoplastic polymer which can be dissolved or decomposed at a faster rate than said binder, the volume ratio of said coating layer in the conjugate fiber being not more than 50%;
- drawing the conjugate fiber and thereafter dissolving or decomposing said coating layer so as to expose not less than 30% of said abrasive layer.
Dependencies are inferred from the claim text.