Container, injection molding method of container, and mold for injection molding of container

A technology for injection molding and containers, which is applied in the field of containers, injection molding of containers and molds for injection molding of containers, which can solve the problems of gas leakage of the contents, decrease of air tightness, uneven contact pressure of sealing gaskets, etc., and achieve contact The effect of uniform pressure and high air tightness

Inactive Publication Date: 2014-10-01
ハタ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if a stretch core is used, there is a problem that a parting line is formed on the container body at a position corresponding to the split surface of the stretch core.
If a parting line is formed at the opening of the neck of the container body, especially at the end of the opening, t

Method used

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  • Container, injection molding method of container, and mold for injection molding of container
  • Container, injection molding method of container, and mold for injection molding of container
  • Container, injection molding method of container, and mold for injection molding of container

Examples

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Embodiment Construction

[0081] A container 100 as an example of an embodiment of the present invention, an injection mold 200 for injection molding the container body 110 of the container 100 , and an injection molding method will be described with reference to the drawings. First, use figure 1 The outline of the container 100 will be described.

[0082] Such as figure 1 , figure 2 As shown, the container 100 is a synthetic resin wide-mouthed container for filling cream-like cosmetic materials. The container 100 has a container body 110 , a lid portion 120 and a gasket 130 .

[0083] The container body 110 has a cylindrical portion 111 , a neck portion 112 and a shoulder portion 113 . The shoulder portion 113 is a portion where the outer diameter and inner diameter change from the neck portion 112 to the cylindrical portion 111 . On the inner peripheral surface of the shoulder portion 113 , an undercut 114 that changes from the inner diameter D1 of the opening 117 of the neck portion 112 to the...

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PUM

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Abstract

The invention discloses a container, an injection molding method of container, and a mold for injection molding of a container. The container, which is provided with a wide opening, and is disposed on the inner side of the container body in an inverted manner, can be used to improve the airtight performance of the container, and can be used to produce the container at low costs. The mold (200) is provided with a neck inside side mold (90),which is provided with a first molding surface capable of continuously molding from inner periphery of the neck part (112) of the container body (110) to the end part (118) of the opening part (117); a first sliding core (50) and a second sliding core (60), which penetrates the neck inside side mold (90), and can be used to form the continuous peripheral inverted buckles (114) facing to the inner periphery of the cylinder part (111) of the container body (110) and the inner periphery of the neck part (112); and a core block (70), which penetrates the neck inside side mold (90), and is configured to be in the area enclosed by the first sliding core (50) and the second sliding core (60).

Description

technical field [0001] The present invention relates to a container, an injection molding method of the container, and a mold for injection molding of the container. More specifically, the container of the present invention is wide-mouthed, and has an undercut (Japanese: アンダーカット) inside the container main body. The injection molding method and the mold for injection molding of the present invention are used in the manufacture of such containers. Background technique [0002] Conventionally, wide-mouthed containers have been known as cosmetic containers for filling, for example, cream-like cosmetic materials. The wide-mouth container is mainly composed of a container body, a sealing gasket and a cover. [0003] The lid is mounted on the neck of the container body. There is also known a container in which the outer diameters of the container body and the lid are substantially the same. The container body of such a container has a difference in outer diameter between the cy...

Claims

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Application Information

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IPC IPC(8): B29C45/26B29C45/33B29C45/44
CPCB29C45/26B29C45/33B65D11/06B29C45/36B29C45/4435B29C2045/14918B29C2045/363B29D99/0096B29L2031/56
Inventor 仲野克德白崎修司
Owner ハタ
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