Container sealing device and packaging container and application thereof

Abstract

The invention discloses a container sealing device and a packaging container and application thereof, a cover component is provided with a cover surrounding structure and a cavity cylinder structure, threads are arranged on the inner wall of the cover surrounding structure, the head end of the cavity cylinder structure is open, the tail end of the cavity cylinder structure is closed, or the tail end of the cavity cylinder structure is provided with a channel structure, and a release component is provided with a sealing piece with a thinning connecting structure and a breakthrough structure. The releasing component is made of a low-density polyethylene material with the tensile strength of 7.1-8.9 MPa and the elongation at break of 50%-220% in an injection molding mode through a mold, the releasing component can be installed and arranged on the outer wall of the cavity cylinder structure of the cover component in a sleeving mode, the container sealing device can be installed at a neck opening of a container, and the opening of the container can be sealed by screwing the cover component. The cavity cylinder structure bursts a thinned connecting structure of a sealing piece of the releasing component, and the sealing piece is pushed to the outside of the cavity cylinder structure, so that the materials in the cavity cylinder structure are released into the container; the invention further provides a packaging container of the container sealing device, a packaging composition, an assembling method of the container sealing device and application of the container sealing device.

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