Vacuum 000 storage method and fresh-keeping cover thereby

Abstract

The invention discloses a vacuum storage method and a refreshing cover thereof. The method includes the following steps: a polyurethane membrane fixed at a frame is covered on a container opening, pinched inward and then released; as the membrane recovers the plane state, the inside of the container generates relative vacuum to reach the effect of enclosed vacuum refreshing. At the same time, the invention also discloses the refreshing cover, consisting of a cover surface and a circular frame, wherein, the cover surface is the polyurethane membrane fixedly arranged on the frame which is provided with a handle for opening the cover protruding out from an outer circumference. The invention provides a device adopting a high-elasticity plastic membrane with a fixed frame and a locking mechanism and a vacuum refreshing method, which greatly prolong the time of corruption and degeneration of food; at the same time, compared with the conventional method and device, the invention is more convenient and effective and has the advantages of stable and reliable work, low manufacture cost, and high economic and social benefits. The invention is applied to the objects and the packaging methods requiring vacuum storage such as medical instruments, drugs, etc.

Description

technical field [0001] The present invention relates to a vacuum storage method, especially a vacuum storage method using a container with a planar opening. [0002] The present invention also relates to a household appliance, in particular to a vacuum cover, and more particularly to a vacuum cover which can be fitted with a container having a flat opening to preserve food stored in the container or a substance that needs to be preserved for a long period of time. cover. Background technique [0003] In daily life, we all know that dry food will become damp and moldy due to absorbing moisture in the atmosphere. For example, when storing sugar, it will become agglomerated due to moisture absorption, making it difficult to use. The same wet food will dry out due to the adsorption effect of the atmosphere. For example, when storing bread and exposing it to the atmosphere, the bread will dry and gradually harden from the surface to the inside. In addition, when storing foods r...

AI Technical Summary

Problems solved by technology

Also because there is less dry and cold air to dehydrate food, frozen vacuum-packed food will be less burnt by the refrigerator and affect the quality and taste of the food

[0005] There are also some vacuum food preservation devices in the prior art, most of which are relatively complicated in structure, and some are vacuum containers, which need to be equipped with corresponding vacuum devices, such as manual or electric vacuum pumps, etc., which have complex structures, complicated operations, and high costs; made vacuum lids, but the manufacturing requirements are high and the applicability is not strong

[0006] Another method of separating the food in the container from the outside world by using plastic wrap, but it is only a simple separation method.

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