发明名称 |
Process for pelletizing ultra-high melt flow polymers |
摘要 |
Disclosed is a process for pelletizing high melt flow crystalline polymers to produce crystalline pellet products. The process includes feeding a polyolefin granular or pelleted polymer into a melting/mixing mechanism to provide a molten polymer material. The molten polymer material is optionally passed through a melt pump and through a die to form a plurality of molten polymer strands. The plurality of molten polymer strands then are passed through or along a water trough declined with respect to the direction of the horizontal arrays where they are sprayed with cool liquid a plurality of times in such a manner that the sprayed cool liquid creates turbulent flow and disturbs a thin film of hot water and/or steam that forms around each molten polymer strand as it is cooled without undesirable axial acceleration of the polymer strands. Subjecting the molten polymer strands to such a cooling procedure produces cooled polymer strands, which then are fed to a cutting mechanism and cut into pellets. The process produces ultra high melt flow crystalline polymer pellets which are uniformly compounded. |
申请公布号 |
AU2601401(A) |
申请公布日期 |
2001.07.09 |
申请号 |
AU20010026014 |
申请日期 |
2000.12.27 |
申请人 |
UNION CARBIDE CHEMICALS AND PLASTICS TECHNOLOGY CORPORATION |
发明人 |
MARIOS AVGOUSTI;EDWARD ALLEN LEACH;ALEX KHARAZI |
分类号 |
B29B9/06;B29C35/16 |
主分类号 |
B29B9/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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