Document Type and Number:
Japanese Patent JPH0437763
Kind Code:
B2
Abstract:
A method is disclosed for making a three layered parison for blow molding a biaxially oriented hollow article of thermoplastic material. One end portion of an extruded tubular body is heated to welding temperature and closed to a bottom by a forming step. The central layer of the multilayered body is removed from part of the end portion before the forming step takes place to insure that the central barrier layer of the body allows for an intimate welding together of the inner and outer layer. A similar operation is used in making the finish portion of a container at the opposite end of the tubular body.
Inventors:
OTSUTOO ROOZENKURANTSU
KURAUSU HORUBEGE
NORUBERUTO HEENE
KURAUSU HORUBEGE
NORUBERUTO HEENE
Application Number:
JP3862485A
Publication Date:
June 22, 1992
Filing Date:
February 27, 1985
Export Citation:
Assignee:
KURUTSUPU KOOHOPURASUTO MASHIINENBAU GMBH
International Classes:
B29B11/10; B29B11/14; B29C49/00; B29C49/02; B29C49/08; B29C49/22; B29C49/64; B29C57/10; B29L9/00; B29L22/00
Next Patent: JPH0437764