| 发明名称 |
HOLLOW BLOW-MOLDED ARTICLES AND MOLDING METHOD THEREFOR |
| 摘要 |
A blow molding method comprising introducing a hot parison of a thermoplastic crystalline olefin resin into a mold cavity and blow molding it, characterized in that the blow molding is carried out under such temperature conditions that the surface temperature, T DEG C., of the mold cavity satisfies the following expression (1), Tc-T1- DELTA T<T<Tc+T2 (1) wherein Tc is the DSC crystallizing temperature in DEG C. of the olefin resin, T1 is 20 DEG C. when the olefin resin is a C2 olefin and 30 DEG C. when it is another olefin resin, T2 is 10 DEG C., and DELTA T is a corrected value in DEG C. which is represented by the following equation (2) and holds good only when a mold having a heat insulating layer on the surface of its cavity is used, DELTA T=(-12.7 log 10 lambda -15.2+25t) (2) wherein lambda is the heat conductivity of the heat insulating layer in cal/cmxsecx DEG C., and t is the thickness in cm of the heat-insulating layer, and a hollow blow-molded article of a thermoplastic crystalline olefin resin produced by the aforesaid method. |
| 申请公布号 |
DE3269504(D1) |
申请公布日期 |
1986.04.03 |
| 申请号 |
DE19823269504 |
申请日期 |
1982.12.02 |
| 申请人 |
MITSUI PETROCHEMICAL INDUSTRIES, LTD.;YAZAKI PLASTICS INDUSTRIES CO., LTD. |
发明人 |
MASUMOTO, KAZUHIRO;FUJIMURA, MITUAKI;SAWAZAKI, MASAUKI |
| 分类号 |
B29C33/02;B29C49/64;(IPC1-7):B29C49/42;B29L22/00 |
主分类号 |
B29C33/02 |
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