发明名称 |
MACHINE FOR HEAT SEALING POLYMERIC SHEETS INTO A SPIRAL DRUM |
摘要 |
A heat sealing machine for producing a drum of spirally wound layers of thermoplastic polymeric sheet material heat sealed together having a rotatable horizontal shaft for receiving thermoplastic polymeric sheet material spirally wound thereon by rotation of the shaft; a heater adapted to be positioned between and adjoining a first polymeric sheet layer being spirally wound on the shaft and a prior layer wound on the shaft; and a support, for the heater, displaceable with respect to the shaft axis so that the heater can remain radially adjacent a drum surface on which another spiral layer is to be heat sealingly attached. A portion of the heater can be readily formable into cylindrical shell segments of varying radii when positioned between the two polymeric sheet layers. |
申请公布号 |
PT72699(A) |
申请公布日期 |
1981.04.01 |
申请号 |
PT19810072699 |
申请日期 |
1981.03.19 |
申请人 |
WALKER PROCESS CORPORATION |
发明人 |
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分类号 |
B29C53/00;B29C53/32;B29C53/56;B29C53/62;B29C53/78;B29C53/84;B29C65/00;B29C65/18;B29C65/20;B29D23/00;B65H75/00;C02F3/08 |
主分类号 |
B29C53/00 |
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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