FORMING MOLD AND INJECTION MOLD

• US 20190308362A1
• Filed: 12/28/2018
• Published: 10/10/2019
• Est. Priority Date: 06/20/2014
• Status: Active Grant

• Current Assignee: Nissei ASB Machine Company Limited
• Original Assignee: Nissei ASB Machine Company Limited
• Inventors: MIYAZAWA, Yoshiki, TSUCHIYA, Yoichi
• Granted Patent: US 10,737,428 B2
• Time in Patent Office: Days
• CPC Class Codes: B29B 11/08 Injection moulding
• CPC Class Codes: B29B 11/12 Compression moulding
• CPC Class Codes: B29B 11/14 characterised by structure or composition
• CPC Class Codes: B29C 2049/023 using inherent heat of the preform, i.e. 1 step blow moulding
• CPC Class Codes: B29C 2791/001 Shaping in several steps
• CPC Class Codes: B29C 2949/0715 the preform having one end closed
• CPC Class Codes: B29C 2949/0779 characterised by the body
• CPC Class Codes: B29C 2949/078 characterised by the bottom
• CPC Class Codes: B29C 2949/0817 of the body
• CPC Class Codes: B29C 2949/0818 of the bottom
• CPC Class Codes: B29C 2949/3056 having components being compression moulded
• CPC Class Codes: B29C 49/02 Combined blow-moulding and manufacture of the preform or the parison
• CPC Class Codes: B29C 49/06 Injection blow-moulding
• CPC Class Codes: B29C 49/061 with parison holding means displaceable between injection and blow stations
• CPC Class Codes: B29C 49/071 Preforms or parisons characterised by their configuration, e.g. geometry, dimensions or physical properties
• CPC Class Codes: B29C 49/18 using several blowing steps B29C49/16 takes precedence
• CPC Class Codes: B29C 49/28 Blow-moulding apparatus
• CPC Class Codes: B29C 49/42421 before laying into the mould
• CPC Class Codes: B29C 49/4252 Auxiliary operations prior to the blow-moulding operation not otherwise provided for
• CPC Class Codes: B29K 2067/003 PET, i.e. poylethylene terephthalate
• CPC Class Codes: B29L 2031/712 : Containers; Packaging elements or accessories, Packages closures therefor B29L2031/56; ink or toner cartridges B29L2031/7678; squeeze tubes B29L2023/20; suitcases B29L2031/7418

Abstract

A forming mold is used when forming a preform, which has a neck portion and a barrel portion, and whose barrel portion is filled with a molding material over the entire axial direction thereof, by injection molding; forming a space part in the barrel portion of the preform to convert the preform into an intermediate molded product; and blow-molding the intermediate molded product to form a hollow container which is a final molded product. The forming mold is equipped with a boring rod which is inserted from the neck portion side into the barrel portion of the preform to form the space part of at least a predetermined depth in the barrel portion.

Claims

1-11. -11. (canceled)

12. A forming mold for use in forming a preform, which has a neck portion and a barrel portion, and whose barrel portion is filled with a molding material over an entire axial direction thereof, by injection molding;

forming a space part in the barrel portion of the preform to convert the preform into an intermediate molded product; and

blow-molding the intermediate molded product to form a hollow container which is a final molded product,

wherein the forming mold is equipped with a boring rod which is inserted from a side of the neck portion into the barrel portion of the preform to form the space part of at least a predetermined depth in the barrel portion.

13. The forming mold according to claim 12, wherein the boring rod is configured to be capable of jetting air from at least a leading end thereof into the barrel portion of the preform.

14. The forming mold according to claim 13, wherein the boring rod has at the leading end thereof a ring-shaped opening for jetting air.

15. An injection mold for use in forming a preform, which has a neck portion and a barrel portion, whose barrel portion is filled with a molding material over an entire axial direction thereof, and whose neck portion has a reference hole, by injection molding;

inserting a boring rod from the reference hole to form a space part in the barrel portion of the preform, thereby converting the preform into an intermediate molded product; and

blow-molding the intermediate molded product to form a hollow container which is a final molded product,

wherein the injection mold is equipped with a neck mold for defining an outer peripheral surface of the neck portion, and an injection core mold disposed inside the neck mold for defining an inner peripheral surface of the neck portion.

16. The injection mold according to claim 15, wherein the injection core mold is formed in a length sufficient to reach the barrel portion.