PREFORM INJECTION MOLDING DEVICE - YOSHINO KOGYOSHO CO LTD

Title:

PREFORM INJECTION MOLDING DEVICE

Document Type and Number:

WIPO Patent Application WO/2014/207986

Kind Code:

A1

Abstract:

This injection molding device has a nozzle (1) for injection molding a biaxial stretch blow molding preform in which at least one intermediate layer is laminated in a base layer. An inner flow channel (15) and an outer flow channel (17) for forming the base layer and a middle flow channel (16) for forming the intermediate layer are disposed coaxially. The middle flow channel (16) is divided into a specified number of flow channels by longitudinal blocking rib pieces (20). The respective upstream portions (20b) of the side walls located on the upstream side of the pairs of side walls (20a) on the two sides of the longitudinal blocking rib pieces (20) in the circumferential direction are inclined surfaces for which the distance therebetween narrows from the downstream side to the upstream side, or the downstream ends of the longitudinal blocking rib pieces (20) enter the inner flow channel (15) and/or the outer flow channel (17).

Inventors:

TOYODA TAMOTSU (JP)
HOSOKOSHIYAMA HIROSHI (JP)
SATO MAMORU (JP)
ISHIZAWA YASUHIRO (JP)

Application Number:

PCT/JP2014/002566

Publication Date:

December 31, 2014

Filing Date:

May 15, 2014

Export Citation:

Click for automatic bibliography generation Help

Assignee:

YOSHINO KOGYOSHO CO LTD (JP)
TOYODA TAMOTSU (JP)
HOSOKOSHIYAMA HIROSHI (JP)
SATO MAMORU (JP)
ISHIZAWA YASUHIRO (JP)

International Classes:

B29C45/16; B29B11/08; B29C45/26; B29C49/22

Foreign References:

JP2010012605A	2010-01-21
JP2010012606A	2010-01-21
JPS58136317U	1983-09-13
JP2013095035A	2013-05-20

Other References: