发明名称 |
BOX FOR TRANSPORTATION AND STORAGE OF PRODUCTS USING POLYPROPYLENE PANEL FOAMED WITH HIGH MAGNIFICATION BY USING INERT GAS AS FOAMING AGENT, AND ITS PREPARATION METHOD |
摘要 |
PURPOSE: Provided are a box for transporting and storing products which uses polypropylene panel for replacing expanded polystyrene and whose thickness can be reduced, and its preparation method by extrusion molding. CONSTITUTION: The box is prepared by cutting a polypropylene panel which is compression foamed with a high magnification by using an inert gas as a foaming agent, and assembling the cut one. Preferably the polypropylene is not expandable polypropylene containing a foaming agent but common polypropylene; and the panel has an expansion magnification of 10 times or more and a specific gravity of 0.01-0.1 g/cm¬3. The method comprises the steps of supplying common propylene and melting it with heat or frictional heat; supplying carbon dioxide or nitrogen as an inert gas; mixing the molten polypropylene with the injected gas; passing the mixed polypropylene/gas solution through a die to form it; controlling the thickness of the foamed one to prepare a panel; cutting or processing the panel; and assembling the cut panel by using a binding means such as a pin or a nail or an adhesive such as a bond.
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申请公布号 |
KR20050021388(A) |
申请公布日期 |
2005.03.07 |
申请号 |
KR20050002781 |
申请日期 |
2005.01.12 |
申请人 |
DAE YOUNG CABLE CO., LTD. |
发明人 |
LEE, JONG WON |
分类号 |
C08J5/00;C08J9/04;C08J9/10;(IPC1-7):C08J9/04 |
主分类号 |
C08J5/00 |
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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