Vacuum fresh-keeping bag provided with extraction valve and sealing zipper

Abstract

Disclosed is a vacuum bag for retaining freshness with an air extraction valve (20) and a sealing fastener (40), comprising a rubber bag film (10), an air extraction valve (20) and a sealing fastener (40). The air extraction valve (20) consists of a valve sheet (21), a valve seat (22) and a valve cover (23), and is located between upper and lower films of the rubber bag. One face of the valve seat (22) is firmly adhered to the inner surface of one rubber bag film and on the surface of the other face are a plurality of grooves (221), and the valve cover (23) encircles the valve seat in a close fit. At the middle of the valve sheet (21) placed between the valve seat (22) and the rubber bag film (10) protrudes a tapered head (211), the tapered head (211) being in a close fit with a taper hole on the valve seat (22). The vacuum bag for retaining freshness can be recycled or re-used many times, thereby avoiding waste. The groove on the face of the valve seat forms a narrow airway with the close fitting valve cover, enabling air in the bag to be filtered and thereby preventing grime from entering the sealed surface of the valve sheet and the valve seat. The structure of the tapered head of the valve sheet guarantees still further the reliability of the seal. The vacuum bag for retaining freshness is suitable for use in the home, bars, canteens and when travelling outdoors, etc., and cooperating with an air extraction apparatus can enable compressed and vacuum packed storage of food and precious items, etc.

Description

technical field [0001] The invention relates to a compressed storage and fresh-keeping appliance for household food and precious ornaments, belonging to the technical field of household products, in particular to a recyclable vacuum fresh-keeping sealed bag with an air extraction valve and a sealed zipper. Background technique [0002] As people's pursuit of personal quality of life and food hygiene is getting higher and higher, vacuum-packed food bags have begun to enter the families of ordinary people, and are accepted and used by more and more consumers. However, the cost of vacuum bags sold in the international market is high, the price is expensive, and they are consumables, which are difficult for ordinary families to bear and consume. [0003] At present, some reusable vacuum-sealed plastic bags with zippers and suction nozzles have begun to appear on the market. Because of their technical immaturity and structural limitations, the air-sealing effect is not reliable a...

AI Technical Summary

Problems solved by technology

[0004] In addition, since the sealing surface of the above-mentioned plastic bag is flat and has no air filter mechanism, it is very easy to weaken or fail the sealing performance due to the dust in the food entering the sealing surface during actual use.

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