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Pressure balance composite liner and manufacturing method thereof

A balance and pressure technology, applied in packaging and other directions, can solve the problems of easy damage to the seal film, container leakage, etc., and achieve the effect of simple and easy production method, good structure impact resistance, and impact resistance requirements.

Pending Publication Date: 2018-09-28
GUANGZHOU LIBY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the problem that the film in the seal is easily damaged when the existing seal used to balance the air pressure inside and outside the container is subject to a relatively high impact force (such as vibration or drop during transportation), which makes the container have a risk of leakage, and provides A pressure-balanced composite liner used to balance the air pressure inside and outside the container, which is simple to manufacture, can withstand greater impact force, and can prevent accidental leakage of contents in the container, and a manufacturing method of the pressure-balanced composite liner

Method used

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  • Pressure balance composite liner and manufacturing method thereof
  • Pressure balance composite liner and manufacturing method thereof
  • Pressure balance composite liner and manufacturing method thereof

Examples

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Embodiment 1

[0037] This embodiment provides a pressure-balanced composite gasket and a manufacturing method of the pressure-balanced composite gasket.

[0038] refer to Figure 1-4 , the pressure-balanced composite liner of this embodiment is ring-shaped, with a ring width of 9 ± 1 mm and an outer diameter of 35 mm, including a ring-shaped bearing cushion layer 110, a breathable cushion layer 120 and a top layer that are sequentially stacked and fixed together. Cushion 130. A first perforation 111 is formed in the middle of the bearing cushion 110 , a second perforation 121 is formed in the middle of the breathable cushion 120 , and a third perforation 131 is formed in the middle of the top cushion 130 . The breathable cushion 120 is provided with 20 grooves 122 from the second perforation 121 edge to the outer edge of the breathable cushion 120 (that is, the groove 122 runs through the annulus of the breathable cushion 120), and the length of the groove 122 is 8 -12mm, the groove width...

Embodiment 2

[0045] This embodiment provides a pressure-balanced composite gasket and a manufacturing method of the pressure-balanced composite gasket.

[0046] refer to Figure 7-8 , The pressure-balanced composite liner of this embodiment is ring-shaped, with a ring width of 14-15 mm and an outer diameter of 64 mm. A first perforation 211 is formed in the middle of the bearing cushion 210 , and a second perforation 221 is formed in the middle of the air-permeable cushion 220 . The breathable cushion 220 is provided with 20 grooves 222 from the second perforation 221 edge to the outer edge of the breathable cushion 220 (that is, the groove 222 runs through the annulus of the breathable cushion 220), and the length of the groove 222 is 14 -17mm, the groove width of the groove 222 is 60 μm, and the cross-sectional area of ​​the groove 222 is about 2827 μm 2 . In this embodiment, the bearing cushion layer 210 is a foamed PE sheet with a thickness of 2 mm, and the breathable cushion layer ...

Embodiment 3

[0053] This embodiment provides a pressure-balanced composite gasket and a manufacturing method of the pressure-balanced composite gasket.

[0054] The pressure-balanced composite liner in this embodiment is ring-shaped, with a ring width of 8-10 mm and an outer diameter of 35 mm, and includes a ring-shaped bearing cushion layer and a breathable cushion layer that are sequentially stacked and fixedly bonded together. The middle part of the bearing pad is provided with a first perforation, and the middle part of the air-permeable pad is provided with a second perforation. The breathable cushion is provided with 20 grooves from the second perforated edge to the outer edge of the breathable cushion (that is, the groove runs through the annulus of the breathable cushion), and the length of the groove is 8-12mm. The width is 10 μm, and the cross-sectional area of ​​the groove is about 78.5 μm 2 . In this embodiment, the bearing cushion layer is a foamed PE sheet with a thickness ...

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Abstract

The invention relates to the technical field of container sealing, in particular to a pressure balance composite liner and a manufacturing method thereof. The pressure balance composite liner is provided with a ventilation cushion layer comprising groove and a composite liner for bearing the cushion layer; the groove on the ventilation cushion layer is used as a tunnel for communicating the internal and the external of a container for balancing internal and external air pressures of the container; and through control of the cross sectional area and the length of the tunnel, a gas penetration function can be achieved when the liquid leakage is stopped. In addition, the ventilation cushion layer and the bearing layer are both thicker than a ventilation film in a traditional sealing piece; and the composite liner is better in impact resistance compared with the film to meet the impact resisting requirement of heavy packages. The manufacturing method of the composite liner is simple and feasible; and a pre-bonded composite liner substrate can be directly carved through laser to form the groove as the tunnel, so that the composite liner with the tunnel structure can be conveniently andquickly obtained.

Description

technical field [0001] The invention relates to the technical field of container sealing, in particular to a pressure-balancing composite liner and a manufacturing method thereof. Background technique [0002] During the storage of some slowly fermented foods or some chemicals with decomposition or volatile gas properties, the pressure in the bottle is often increased due to the slow generation of gas in the bottle, which often appears as a bottle swelling on some plastic bottles. In addition, for some products that absorb the gas in the bottle, such as oxygen-consuming content, the gas pressure in the bottle will become smaller, and the bottle will be compressed by atmospheric pressure. For the content containing liquid, in order to ensure that the seal does not leak, the bottle mouth is usually completely closed, which can ensure that the liquid in the bottle does not leak, but at the same time it also causes the gas pressure in the bottle to change and produce a pressure ...

Claims

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Application Information

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IPC IPC(8): B65D81/127
CPCB65D81/1275
Inventor 王龙呈孙宜恒颜朝晖
Owner GUANGZHOU LIBY
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