Double-layer can bottle cap

Abstract

The invention relates to the technical field of food sealing, and discloses a double-layer can bottle cap. The double-layer can bottle cap comprises a glass bottle, the top of the glass bottle is fixedly sleeved with a bottle cap body, a groove is formed in the top of the bottle cap body, an opening device is fixedly installed in the groove, a sealing ring is fixedly installed at the bottom of thebottle cap body, the section of a one-way normally-closed hole is funnel-shaped, the opening diameter of the top of the one-way normally-closed hole is the largest, the one-way normally-closed hole penetrates through a sealing plate, and the bottom of the one-way normally-closed hole is of a normally-closed design. When the bottle cap is covered and the interior of the glass bottle is decompressed, the air pressure in the glass bottle starts to be reduced, the air pressure intensity between the bottle cap and the sealing plate is not changed, and the sealing plate is pushed to move towards the interior of the glass bottle, the section of the sealing plate is arc-shaped, and the bottom arc radius R1 of the section of the sealing plate is smaller than the top arc radius R2 of the section ofthe sealing plate; the sealing plate can extrude the interior of a clamping part while moving downwards, so that a connecting part is attached to the inner wall of a glass bottle opening more tightly, and the sealing effect of the sealing ring is enhanced.

Description

technical field [0001] The invention relates to the technical field of food sealing, in particular to a double-layer can bottle cap. Background technique [0002] Canned food is a kind of food that people love, and there are many kinds, such as canned fruit, canned fish, canned meat, and in the packaging of canned food, glass bottles and caps are the most used for packaging and sealing. In order to extend the shelf life during the process, vacuum packaging is used, which greatly reduces the activity of some microorganisms inside, ensuring that the taste of the canned food can be maintained for a long time. [0003] However, the vacuum packaging method makes the air pressure in the glass bottle very low, which makes the bottle cap under great pressure under the action of atmospheric pressure, and these pressures will act on the contact between the inner thread of the bottle cap and the outer thread of the glass bottle mouth. location, which makes the friction between them ve...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the shortcomings in the use of the existing can bottle caps proposed in the background technology, the present invention provides a double-layer can bottle cap, which has the advantage of being able to easily open the bottle cap, and solves the problem that the bottle cap is damaged due to vacuum packaging. Difficult to open problems due to increased pressure

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