US 2003/0168782 A1Published application

Biaxial stretch blow molding method and apparatus for wide-mouthed containers

AssigneeFrontier, Inc.

InventorSaburo Suzuki

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Abstract

In a biaxial stretch blow molding apparatus (10) for wide-mouthed containers, preforms (6) that are in an inverted state are conveyed on a single plane by preform carriers (40) that go around a carrier circuit (30) in the form of a loop, are heated via a heating station (60), and are then transferred via a transfer station (80) to stretch blow molding mold assemblies (72) that go around a circular looped path (71). The molded wide-mouthed containers (1) are taken out of the stretch blow molding mold assemblies (72) along a conveying path on a same plane and collected by a collection station (90). Wide-mouthed containers can be formed continuously and at high speed, which is less wasteful and more economical than the case where wide-mouthed containers that are formed from films.

Claims25

Dependent claims

A biaxial stretch blow molding method for a wide-mouthed container that molds the wide-mouthed container, which has a shape including an opening flange that extends outwards at an opening part of a cylindrical container main body having a bottom, using biaxial stretch blow molding, comprising steps of:

providing a preform including a stretch molding part that is made into the container main body by biaxial stretch blow molding and an opening flange that is formed along an opening part of the stretch molding part, is not stretch molded, and remains as the opening flange of the wide-mouthed container;
heating the preform to a temperature suited to stretch molding while the preform is conveyed in an inverted state;
inserting the heated preform in the inverted state into a stretch blow molding mold and performing biaxial stretch blow molding;
and
taking out a wide-mouthed container out of the stretch blow molding mold after molding and collecting the wide-mouthed container.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/384,545Filed 11 Mar 2003
Priority: JP 2001-21652317 Jul 2001
Published: 11 Sep 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

B29C 49/4205
Component parts, details or accessories; Auxiliary operations: handling means, e.g. transfer, loading or discharging means
B29C 49/42069
Handling means, e.g. transfer, loading or discharging means: means explicitly adapted for transporting blown article
B29C 49/06
Combined blow-moulding and manufacture of the preform or the parison: injection blow-moulding
B29C 49/12
Using mechanical means for prestretching: stretching rods