Title:
METHOD AND DEVICE FOR EASY PULVERIZATION OF WASTE THERMOPLASTIC RESIN
Document Type and Number:
Japanese Patent JP3145750
Kind Code:
B2
Abstract:
PURPOSE: To crush and pulverize a mixture containing waste thermoplastic resin, edible oil and a strong alkali hydroxide efficiently and easily by the mixture at the given temperature, kneading and melt fluidizing uniformly, and then quenching and solidifying the same by means of a refrigerant.
CONSTITUTION: A waste resin mixture 1-a containing waste thermoplastic resin, edible oil and a strong alkali hydroxide is fed from a feeding section 7 of an extrusion device of simple structure provided with a screw 2 installed in a cylinder 5 composed of a steel pipe and melted at the temperature of maximum 200-350°C by a heater 6 installed in the cylinder 5. Then the mixture is heat kneaded under high temperature and closed pressure to turn uniformly into the melt fluidized state, and a waste resin treated material 1-6 is discharged out of a discharge outlet 9 through a die, and while cooled water is discharged out of a water jetting outlet 10 positioned close to the die to quench the material, the material is introduced into a water tank 16, cooled and solidified therein.
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Inventors:
Shigemasa Suzuki
Akihito Watanabe
Naoshi Shiromoto
Akihito Watanabe
Naoshi Shiromoto
Application Number:
JP31732091A
Publication Date:
March 12, 2001
Filing Date:
November 06, 1991
Export Citation:
Assignee:
Chuo Chemical Co., Ltd.
International Classes:
B29B9/02; B29B11/10; B29B13/02; B29B13/04; B29B17/00; B29K105/26; (IPC1-7): B29B17/00
Domestic Patent References:
| JP5023481A | ||||
| JP55121875A | ||||
| JP633040A | ||||
| JP56122894A | ||||
| JP4118088A |
Attorney, Agent or Firm:
Heiyoshi Odashima (1 person outside)