发明授权
- 专利标题: Multilayer blow molded container and production process thereof
- 专利标题(中): 多层吹塑容器及其制造方法
-
申请号: US11887267申请日: 2006-03-31
-
公开(公告)号: US07976919B2公开(公告)日: 2011-07-12
- 发明人: Takashi Sato , Satoru Suzuki , Daisuke Itoh
- 申请人: Takashi Sato , Satoru Suzuki , Daisuke Itoh
- 申请人地址: JP Tokyo
- 专利权人: Kureha Corporation
- 当前专利权人: Kureha Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Reed Smith LLP
- 优先权: JP2005-106940 20050401
- 国际申请: PCT/JP2006/307387 WO 20060331
- 国际公布: WO2006/107099 WO 20061012
- 主分类号: B32B27/08
- IPC分类号: B32B27/08
摘要:
A multilayer blow molded container having a layer structure that a polyglycolic acid layer is provided as a core layer, and thermoplastic polyester resin layers are arranged as inner and outer layers, wherein the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of an opening end portion of the container, and the core layer formed of the polyglycolic acid layer is not present between the inner and outer layers in at least part of a bottom of the container, wherein the melt viscosity x of a polyglycolic acid forming the polyglycolic acid layer is 300 to 900 Pa·s as measured at a temperature of 270° C. and a shear rate of 122 sec−1, the melt viscosity y of a thermoplastic polyester resin forming the thermoplastic polyester resin layers is 250 to 600 Pa·s as measured at a temperature of 290° C. and a shear rate of 122 sec−1, and a melt viscosity ratio x/y between both melt viscosities is 0.85 to 1.80, and a production process thereof.