发明申请
US20080211134A1 Method and apparatus for making spiral separators using sequential heating and cooling
审中-公开
使用顺序加热和冷却制造螺旋分离器的方法和装置
- 专利标题： Method and apparatus for making spiral separators using sequential heating and cooling
- 专利标题（中）： 使用顺序加热和冷却制造螺旋分离器的方法和装置
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申请号： US12151658申请日： 2008-05-08
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公开(公告)号： US20080211134A1公开(公告)日： 2008-09-04
- 发明人: Thomas J. Grey
- 申请人： Thomas J. Grey
- 专利权人： Outotec Oyj
- 当前专利权人： Outotec Oyj
- 主分类号： B29C33/40
- IPC分类号： B29C33/40 ; B28B11/24 ; B29C35/02
摘要：
A mold for the interior surfaces of one or more spirals is rotated and heated to a temperature sufficient to melt a weldable plastic such as LLDP or HDP plastic in a predetermined amount deposited thereon. Plastic powder not melted is recovered and redeposited until all the plastic powder is melted. The mold or molds are then actively cooled and the formed spiral is removed. An insulation layer is used to improve heating and cooling efficiency, and to control the areas where plastic is deposited. A cover closes the back of the mold.
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