Flow tester for thermoplastic, and strand cutting method
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United States of America Patent
Stats
-
Nov 9, 1993
Grant Date -
N/A
app pub date -
Nov 27, 1991
filing date -
Nov 27, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
According to the present invention, there is provided a flow tester for thermoplastic which uses an extrusion type plastometer including a vertically supported cylinder, a piston on which a weight is mounted at an upper portion thereof and which is inserted in the cylinder, a die mounted on a lower end of the cylinder, and a heater provided to surround the cylinder, characterized in that a sample of a thermoplastic is filled in the cylinder and is heated by the heater to melt, the molten sample is extruded from the die by the piston, a strand as an extruded material is cut, and a mass thereof is obtained, thereby testing a flow characteristic of the thermoplastic, characterized by including a strand bottle which has a cutting edge for cutting the strand and which catches the strand cut by the cutting edge, a strand bottle stocker for storing the strand bottle before and after use, a weight measuring unit for measuring a weight of the cut strand together with the strand bottle, a strand cutting unit for moving the strand bottle so that the cutting edge of the strand bottle travels along a lower end face of the die to perform cutting, and a strand bottle convey unit for transferring and conveying the strand bottle among the strand bottle stocker, the weight measuring unit, and the strand cutting unit.
First Claim
Family
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
- SUMITOMO CHEMICAL COMPANY, LIMITED;SUMITOMO CHEMICAL ENGINEERING CO., LTD.
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Ishino, Mitsumasa | Tokyo, JP | 1 | 2 |
Miura, Yasuhiro | Chiba, JP | 26 | 139 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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