Double-layer plastic bottle assembly capable of preventing air from being blended into bottled liquid

Abstract

The invention provides a double-layer plastic bottle assembly capable of preventing air from being blended into bottled liquid. The double-layer plastic bottle assembly is provided with a double-layer plastic bottle consisting of an inner layer and an outer layer, and a bottle cover connected with the double-layer plastic bottle in a cooperated manner; the bottle bottom of the inner layer is connected together with the bottle bottom of the outer layer; part of the bottle wall of the inner layer is connected with part of the bottle wall of the outer layer; vent holes penetrating through the bottle wall of the outer layer are formed in positions, where the two layers are not connected, at the mouth part of the outer layer, and vent grooves are formed in threads or embedded lines; the vent grooves communicate with the vent holes (particularly when the bottle cover covers the bottle), and the vent holes communicate with an air space; the bottle cover consists of an outer cover and an inner cover; the outer cover is movably connected above the inner cover; and a solution outlet and an air communicating opening are formed in the inner cover. The double-layer plastic bottle assembly can isolate substances in the plastic bottle from air, to prevent the air from affecting the quality of the inside substances; and when the bottle lies down, a liquid substance in the bottle cannot flow out, so that waste and pollution are avoided.

Description

technical field [0001] The invention relates to a plastic container for liquid packaging. Background technique [0002] Liquid items such as beverages, seasonings, and pharmaceuticals are mostly filled in plastic packaging containers. The packaging cost is low and easy to use. However, with the liquid items being poured and taken, air, especially oxygen, will enter the remaining space inside the packaging container, making them Packaging substances are easy to change taste and even cause deterioration, especially for non-disposable liquid items. [0003] The application number is 2005100857608, a high-barrier double-layer plastic bottle with excellent comprehensive performance. The PET-based resin (outer layer) and PEN resin (inner layer) are selected in an appropriate ratio, and a double-material / two-color injection molding machine (or double-layer co-injection molding) is used. Machine) and double-layer preform mold, after two injections (or synchronous injection) into do...

AI Technical Summary

Problems solved by technology

The plastic tube is spirally coiled to form a closed bottle body. Since the plastic tube has a double-layer structure, the plastic bottle with a double-layer structure can solve the problem of temperature regulation, but it cannot effectively prevent the problem of keeping the quality and freshness of the packaging material, and it is more difficult to manufacture.

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