Title:
【発明の名称】ポリエステル樹脂製フロスト調中空容器及びその製造方法
Document Type and Number:
Japanese Patent JP3090775
Kind Code:
B2
Abstract:
PURPOSE:To obtain a massive frosty container by a method wherein the container, the haze and glossiness of the surface of which are specified, is formed out of composition, which is prepared by mixing polyester resin as main material and polycarbonate resin as sub-material with each other by the mixing ratio lying within the specified range. CONSTITUTION:Material, in which 70mol.% or more of repeating unit is made of ethylene terephthalate and the intrinsic viscosity of which is 0.65-1.5, is preferably employedas main material. Out of the composition consisting of the main material as mentioned above and polycarbonate resin as sub-material mixed with each other by the mixing ratio of main material/sub-material ranging from 98/2 to 60/40, a container having the haze of 1-50% and the glossiness of its surface of 40 or less is formed. The forming of the container is performed by forming preform, which is produced by injection molding the above-mentioned composition at the linear speed of 350mm/sec or less. The resultant preform is biaxially stretching blow molding at the elevated temperature of 155-175 deg.C. If the stretching is performed under the stretching temperature of 155 deg.C or lower, a white container is resulted. A container having uniform wall thickness can be hard to obtain, if the stretching is performed under the stretching temperature of 175 deg.C or higher.
Inventors:
Yukihiro Nakano
Hirohiko Hanada
Takeyuki Amiya
Hirohiko Hanada
Takeyuki Amiya
Application Number:
JP10988592A
Publication Date:
September 25, 2000
Filing Date:
April 28, 1992
Export Citation:
Assignee:
Kao Corporation
International Classes:
B29C49/06; B65D1/00; B65D1/02; C08L67/00; B29C49/08; C08L67/02; B29K67/00; B29L22/00; (IPC1-7): B29C49/06; B29C49/08; B65D1/09
Domestic Patent References:
| JP5132613A |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)