Method for recycling nitrile rubber
AssigneeZeon Corporation
InventorsKentaro ONO, Sayaka INOUE
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Abstract
A method of recovering nitrile rubber from water-containing crumbs includes crumb-like nitrile rubber using an extruder in which a screw is disposed inside a barrel so as to be capable of being rotationally driven. The barrel is formed with at least a washing zone. The method includes supplying washing water to the washing zone at a water pressure of 0.2 MPa or higher while mixing the crumb-like nitrile rubber and the supplied washing water in the washing zone, thereby washing the crumb-like nitrile rubber.
Claims9
A method of recovering nitrile rubber from water-containing crumbs comprising crumb-like nitrile rubber using an extruder in which a screw is disposed inside a barrel so as to be capable of being rotationally driven, the barrel being formed with at least a washing/dewatering zone, the method comprising
- supplying washing water to the washing/dewatering zone at a water pressure of 0.2 MPa or higher while mixing the crumb-like nitrile rubber and the supplied washing water in the washing/dewater zone, thereby washing and dewatering the crumb-like nitrile rubber.
Dependencies are inferred from the claim text.