Injection stretch blow molding method of a cylindrical narrow mouth container and a container

An injection stretch blow molding, cylindrical technology, applied in the field of containers, can solve the problems of cracking, deepening, lack of strength against impact, etc.
CN1572466AInactive Publication Date: 2005-02-02A K TECH LAB INC
2 Cites 9 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
A K TECH LAB INC
Publication Date
2005-02-02
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The present invention relates to an injection stretch blow molding method of forming a cylindrical narrow mouth container comprising the following steps; injection molding a preform having a body portion integrally molded with a neck portion wherein the body portion is formed thicker-wall and larger outside diameter than the neck portion from a closing surface between a neck mold and an injection cavity mold, and having a step-out portion, wherein an upper surface of the step-out portion is formed by the closing surface of the neck mold between the neck portion and the body portion and the step-out portion has a smaller outside diameter than the body of the container, and stretch blow molding the preform to the container in a blow cavity mold, wherein a body portion of the container is formed thin-wall from around the upper surface of the step-out portion, and the step-out portion and an expanded portion around the upper surface of the step-out portion form a shoulder portion of the container flat, and also the outside diameter of the step-out portion is smaller than the outside diameter of the open end of a cap.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to an injection stretch blow molding method for manufacturing a cylindrical narrow-mouth container having a flat shoulder portion and the manufactured container for cosmetics, medical instruments, etc. Background technique

[0002] According to conventional stretch-blow-molded containers, the bottom of the mouth of the formed preform is thicker than the main body as an expanded portion (step portion), and the expanded portion forms a support as a stopper for the lid (refer to patent 1: Japanese Patent Laid-Open No. 2003-011212).

[0003] Furthermore, another conventional art discloses a preform for manufacturing a small flat container, the preform having a thick-walled main body portion with a locally reduced thickness leaving a stepped portion between the neck and the main body (Reference Patent 2: Japanese Patent Laid-Open No. 2003-011211).

[0004] In a cylindrical narrow-mouth container having a flat shoulder portion...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More