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Plastic cap and manufacturing method thereof

A technology for plastic lids and lids, applied to other household appliances, closures, packaging, etc., can solve the problems that it is impossible to form openings easily, achieve the effects of preventing the reduction of airtightness, excellent productivity, and ensuring liquid tightness

Active Publication Date: 2020-03-06
NIPPON CLOSURES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, as mentioned above, it is not possible to easily form openings at the beginning of use

Method used

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  • Plastic cap and manufacturing method thereof
  • Plastic cap and manufacturing method thereof
  • Plastic cap and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] The plastic cap of the present invention will now be described with reference to the accompanying drawings.

[0045] Figure 1-7One example of the plastic cover of the present invention shown is a hinged cover comprising a cover body 1, a top cover 20 connected to the cover body 1 by a hinge 11, and an inner plug 30 formed to be removable from the cover body 1. Detached and can be integrated with the top cover after detachment from the cover body, the hinged cover is formed by integrally molding these parts.

[0046] A cap body 1 to be assembled and fixed to a container mouth (not shown) includes a top plate portion 2 and a skirt portion 3 depending from the periphery of the top plate portion 2 . The skirt 3 is divided into an inner cylinder wall 3 a and an outer cylinder wall 3 b formed as if surrounding the inner cylinder wall 3 a by a groove 4 extending from above to below. At the lower end of the groove 4 , a slit 12 penetrates through a local area in the circumfe...

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Abstract

The present invention provides a plastic cap formed as a highly producible one-piece type cap at the time of molding which becomes a two-piece type cap excellent in sealability and openability at thetime of use in which a small-diameter dispensing opening can be formed. The plastic cap comprises: a cap body (1) that is formed of a top plate section (2) and a skirt section (3), that has a dispensing nozzle (8) formed on the outer surface of the top plate section (2) so as to surround a part to be opened, and that is fitted and fixed to a container mouth part (60); and a top lid (20) which comprises a top surface (21) and a circumferential wall (22) hanging from the outer peripheral edge of the top surface (21). The plastic cap is characterized in that: the top lid (20) has formed thereon aprotrusion section (27) which protrudes downward from an inner surface of the top surface (21) and has an engaging part (28) on an outer surface thereof; and the cap body (1) has formed therein an inner plug (30) which comprises an annular sidewall (31) having an outer diameter that can come into close contact with the inner surface of the dispensing nozzle (8) and a bottom section (32) formed ata lower part of the annular sidewall (31), wherein the inner plug (30) is integrally formed, via a breakable weakened part (10), with the cap body (1) at a position below a seal part of the dispensing nozzle (8) that has an inner diameter that can come into close contact with the inner plug (30), and has an engageable part (33) formed on an inner surface of the annular sidewall (31) that vertically engages with the engaging part (28) of the protrusion section (27).

Description

technical field [0001] The invention relates to a plastic cap consisting of a cap body and a top cap, the cap body being fixed to the mouth of the container in use and having a pouring spout. In particular, the present invention relates to a plastic cap having openability and sealing properties and capable of forming a small-diameter pouring spout, and also to a manufacturing method capable of molding the plastic cap with good productivity. Background technique [0002] In a plastic cap composed of a cap body and a top cap for fixing to the mouth of the container, in order to ensure airtightness, it is conventional to pull up the predetermined opening formed in the top plate portion of the cap body when initially taking out the contents. Pull the ring, breaking the weakened portion to create an opening for pouring the contents. [0003] In the cap applied to the container to be filled with viscous content, the contents are poured by pressing the barrel of the container. Th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D47/36B65D47/06B65D47/08
CPCB65D47/36B65D47/106B65D47/0833B29C45/0053B29C45/0081B29L2031/565B65D47/0838
Inventor 辻口洋一杉山尚
Owner NIPPON CLOSURES
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