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Patent Searching and Data


Title:
MANUFACTURE OF TRANSPARENT SATURATED POLYESTER BOTTLE
Document Type and Number:
Japanese Patent JPS5680429
Kind Code:
A
Abstract:

PURPOSE: To prevent accumulation of an olegomer component on the internal wall surface of a die and continuously manufacture the captioned bottle by applying a parting agent on the external wall surface of an intermediate material of a bottomed cylindrical shape beforehand and elongating, expanding and thermosetting the said intermediate material in a biaxial direction.

CONSTITUTION: A parting agent is applied on the external wall surface of an intermediate material of a bottomed cylindrical shape beforehand and then is blow- formed, when a transparent polyester bottle is manufactured using the said intermediate material. Edible oil, machine oil, silicon oil, liquid paraffin, vaseline, etc. are recommended as a parting agent. It is applied on the external wall surface of an intermediate material by methods such as immersion, spray, roller coating, etc. As a result, it is possible to prevent troubles such as the difficulty to remove a formed product because of its sticking to the internal wall surface of a die attributed to the accumulation of the oligomer component of saturated polyester resin components constituting an intermediate material on the internal wall surface of a die when a blow-forming is carried out or a dulling generated on the surface of a formed product.


Inventors:
KUSHIDA HIDEO
ITAKURA TAKESHI
Application Number:
JP15758579A
Publication Date:
July 01, 1981
Filing Date:
December 05, 1979
Export Citation:
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Assignee:
YOSHINO KOGYOSHO CO LTD
International Classes:
B29B11/08; B29C49/42; B29B13/00; B29C37/00; B29C49/06; B29C49/08; B29C49/64; B29C49/68; B29C49/70; B29C65/00; B29C49/22; B29K67/00; B29L22/00; (IPC1-7): B29D23/03