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Liner-provided cap and cap-provided threaded container

A liner and bottle cap technology, which is applied in the direction of bottle/container cap, container capping and capping, etc. It can solve problems such as insufficient lubricant function, large unsealing force, foreign matter, etc.

Active Publication Date: 2010-11-24
UNIVERSAL CAN CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to control the oozing amount of the lubricant, and there are the following problems: if the oozing amount is too small, the effect of the lubricant cannot be fully exerted, and a large unsealing force is required; On top of the contents, considered a foreign body
Although this liner material has excellent sealing and unsealing properties, since the liner is not tightly attached to the inner top surface of the bottle cap, the content is deteriorated by oxygen passing through the liner, so it is not suitable for products with long product cycles. , there is a problem of insufficient oxygen barrier properties

Method used

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  • Liner-provided cap and cap-provided threaded container
  • Liner-provided cap and cap-provided threaded container
  • Liner-provided cap and cap-provided threaded container

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0095] Below, for an embodiment of the bottle cap with liner of the present invention and the threaded container with bottle cap, refer to Figures 1 to 3 Be explained.

[0096] Such as figure 1 as well as figure 2 As shown, the bottle cap 1 of this embodiment is provided with: a bottomed cylindrical metal cap shell (bottle cap body) 4, composed of a top plate portion 2 and a cylindrical peripheral wall portion 3 suspended from the periphery of the top plate portion 2; The plate-shaped synthetic resin spacer 5 is provided on the inner surface of the top plate portion 2 in a state where it does not come off.

[0097] In addition, the threaded container with a cap of this embodiment, for example, the bottle (container) 6 has the cap 1 in a state where the cap 1 is fastened to the mouth portion (mouth portion) 7 . In addition, the threaded container of the present invention includes a bottle-shaped container, a PET bottle, a glass bottle, and the like.

[0098] The above-men...

Embodiment 1

[0169] Next, the results of comparative tests conducted to confirm the effects of the present invention will be described.

[0170] In this test, an aluminum alloy plate having a thickness of 0.25 mm coated on the inside and outside was molded into a cap shell 4 of a 38 mm PP cap (twist-off screw cap). This bottle cap shell 4 uses aluminum plate, and this aluminum plate uses the epoxy phenolic paint that has added polyolefin lubricant to 50mg / dm 2 Bake and coat. In addition, the polypropylene plate formed by the extruder 25 and the T-die 24 is punched into a hard sheet 5a of 37.8 mm, which is inserted into a bottle cap shell 4 with an inner diameter of φ38.05 mm. Twelve liner-locking hooks (liner-locking projections 9 ) protruding inward with a length of 1.0 mm are formed on the cap shell 4 substantially horizontally to the top surface. In addition, the position of the hook was set at a height of 1.5 mm from the top surface of the bottle cap. Also, the insertion is performe...

Embodiment 2

[0196] The gasket of the present invention was produced in the same manner as in Example 1, and compared with a conventional two-layer gasket material as a comparative example. In the present invention, the sliding layer changing the outer diameter of the sliding layer (hard thin sheet) is made, and after being inserted into the bottle cap shell, the sealing layer (soft layer) is molded by molding in the shell. In addition, the size of the sliding layer (hard sheet) was trial-manufactured by estimating the upper limit and lower limit of the present invention, and it was inserted into the bottle cap shell. About these, the same evaluation as Example 1 was performed. A conventional two-layer sheet was tested as a comparative example. In addition, for the sheet of Comparative Example, the same PP and styrene-based elastomer as in Example 1 were extruded and laminated from the double-layer extruder and T-die of the sheet forming machine, and the thickness was adjusted with coolin...

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Abstract

The present invention discloses a liner-provided cap and a cap-provided threaded container. The liner-provided cap for sealing the mouthpiece of the threaded container includes the cap shell (4) consisting of the top plate (2) and the tubular peripheral wall section (3) that hangs from the peripheral edge of the top plate (2), and the synthetic resin liner (5) provided on the inner surface of the top plate (2). The liner (5) includes the disk-shaped rigid sheet (5a) disposed in contact with the inner surface of the top plate (2), and the soft layer (5b) that is laminated to the rigid sheet (5a) and is more flexible than the rigid sheet (5a). The soft layer (5b) is concentric with the rigid sheet (5a) and is formed in an annular or disk shape with a diameter smaller than that of the rigid sheet (5a) so that the soft layer (5b) can be brought into contact with at least the mouthpiece.

Description

technical field [0001] The present invention relates to a bottle cap with a gasket and a threaded container with a bottle cap which are excellent in unsealing performance, sealing performance, gasket installation adaptability and the like. [0002] In addition, the present invention relates to a bottle cap with a gasket and a threaded container with a cap having excellent unsealing properties, sealing properties, gas barrier properties, and the like. Background technique [0003] Generally, caps (container caps) such as glass bottles, PET bottles, and aluminum bottles are widely used with synthetic resin liners. For metal bottle caps, there are the following methods: paint several times on both sides of aluminum sheet, tin-plated sheet, chrome-plated sheet (TFS), etc., and perform stamping molding, and then use it as a bottle cap shell (cap shell), In this regard, the method of inserting a disc-shaped gasket (disk molded body) in advance (disk insertion method), after inser...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D41/04B65D53/04
CPCB65D41/045
Inventor 花房达也武藤英泰
Owner UNIVERSAL CAN CORP
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