| Project/Area Number |
08650249
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Thermal engineering
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| Research Institution | Fukui University |
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Principal Investigator |
KIMURA Teruo Fukui University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (00126632)
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| Project Period (FY) |
1996 – 1997
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| Project Status |
Completed (Fiscal Year 1997)
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| Budget Amount *help |
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1996: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Waste of fabrics / Recycling / Infrared heating / Heat transfer / Melting behavior of fabrics / Insulating board |
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| Research Abstract |
In recent years increased emphasis has been placed on developing recycling techniques for industrial waste products, with the goals of protecting the environment. In this paper, the sandwich-type heat insulating board with fiber. assemblage as a core layr was molded by applying a compression molding method to the fibrous waste cord assemblage whose surface layr was melted partially beforehand by an infrared heating technique.
The non-contact heating technique using infrared heaters may be advantageous to solidify the melted thermoplastic fabrics by cooling. In the present molding method, it is important to clear the melting behavior of the waste cord assemblage under the infrared heating, because the resultant thickness of the surface plastic plate largely depends on the melting behavior. Therefore, our consideration of this work focuses on the melting behavior of thermoplastic waste vords of synthetic fabrics heated by the infrared heaters.
The melting test was performed in the special closed furnace. The temperature response and distributions in the waste cord assemblage were measured by using thermocouples and the melting behavior was observed for various heating power of the infrared heaters. Moreover, the melting rate was measured for the waste cord assemblages with various void ratios.
From the experiments, the followig results are obtained ;
(1) Under the infrared heating, the temperature of the waste cord assemblage rises rapidly and also widely for the case of large void ratio.
(2) The surface temperature of the waste cord assemblage is not always uniform and exceeds the melting point locally in the case of low temperature of heater.
(3) The melted mass of the waste cord becomes almost constant independently of the void ratio under the fixed heating time.
The results obtained in this paper may contribute to the establishment of the compression molding system of the heat insulating board using a waste cord assemblage.
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