发明名称 |
PROCESSO PARA FABRICAR UMA FOLHADE MATERIAL TERMOPLASTICO ESPUMOSO PELA EXTRUSAO DO MATERIAL EM FORMA TUBULAR E ARRANJO PARA EXECUTAR O PROCESSO |
摘要 |
A method and apparatus are disclosed for the manufacture of a web of foamed thermoplastic material. The material web is extruded to form a tubular member and then expanded by action of a compressed fluid so that the outside of the tubular member is forced against a calibrating element arranged adjacent the tubular member. The tubular member is then cooled to a temperature below the softening temperature of the material and then is cut and converted into web form. |
申请公布号 |
BR7905388(A) |
申请公布日期 |
1980.05.27 |
申请号 |
BR19797905388 |
申请日期 |
1979.08.21 |
申请人 |
TETRA PAK INTERNATIONAL AB |
发明人 |
ANDREN S;NILSSON L;LJUNGBERG P |
分类号 |
B29C47/88;B29B7/00;B29C44/50;B29C47/00;B29C47/20;B29C47/22;B29C47/90;B29C47/92;B29C67/20;B29D;B29D7/01;B29K105/04;B29L7/00;(IPC1-7):B29D27/00;B29D7/02 |
主分类号 |
B29C47/88 |
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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