Sealed PE plastic bottle

Abstract

The invention discloses a sealed PE plastic bottle, in particular to a sealed PE plastic bottle used for containing biological products and biological culture agents. The sealed PE plastic bottle comprises a bottle body and a bottle cap which are in thread connection, and is structurally characterized in that the inner top of the bottle cap is provided with an outer convex inner ring plug, and a groove is formed between the inner ring plug and the inner wall of the bottle cap; the inner ring plug and a bottle mouth are in gradient seal, the outer ring diameter of the inner ring plug is greaterthan the inner ring diameter of the bottle mouth; the inner top of the bottle cap and the top of the bottle mouth are in horizontal seal, and the top of the bottle mouth is located in the groove, andthe width of the groove is less than the wall thickness of the bottle mouth; the inner wall of the base portion of the bottle cap and the outer wall of a bottle shoulder are in gradient seal, and theinner ring diameter of the base portion of the bottle cap is less than the outer ring diameter of the bottle shoulder. The sealed PE plastic bottle used for containing the biological products and thebiological culture agents has the advantages that the structure design is reasonable, the sealing performance is good, and the sealed PE plastic bottle can be used for packaging the biological products and the biological culture agents.

Description

technical field [0001] The invention relates to a plastic bottle, in particular to a sealed PE plastic bottle used to contain biological products and biological culture agents. Background technique [0002] At present, the common PE plastic bottles on the market generally adopt single seal, that is, the inner top of the bottle cap is sealed with the top of the bottle mouth, and there are also double-sealed plastic bottles, that is, the inner top of the bottle cap is sealed with the top of the bottle mouth, and the bottle cap is sealed. The inner ring plug and the bottle mouth form a gradient seal. Plastic bottles using these two sealing methods are only suitable for the packaging of general liquid food and beverages. If they are used for the packaging of biological products and biological culture media, the sealing performance is not reliable enough to meet the requirements of raw materials such as biological products and bovine serum and culture fluid. Specific requirement...

AI Technical Summary

Problems solved by technology

Plastic bottles using these two sealing methods are only suitable for the packaging of general liquid food and beverages. If they are used for the packaging of biological products and biological culture media, the sealing performance is not reliable enough to meet the requirements of raw materials such as biological products and bovine serum and culture fluid. Specific requirements for sterility, pyrogen-free, and bacteriophage-free auxiliary materials

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