Vacuum sealed display film and its push-type vacuum fresh-keeping box

Abstract

The present invention relates to a vacuum sealing visualization film for a refreshing container, and a pressing type vacuum refreshing box with an improved structure. The box body and the box cover of the pressing type vacuum refreshing box can be in a sealed combination; a concave groove with an air ventilation hole is arranged on the box cover; the air ventilation hole extends upwards, and is sleeved with a sealing piece; a turning cover is articulated with one end of the concave groove, a stopping cap is buckled on the turning cover; a vacuum sealing visualization film that can be jointed with the upper head face of the sealing piece is arranged on the inner shoulder of the stopping cap in a limiting way; the vacuum sealing visualization film consists of a ring shaped film sheet body and a soft deformation film; the soft deformation film is an up and down revolvable conic table body that integrally extends upwards from the side of the bottom of the ring shaped film sheet body. The present invention has the advantages of simple structure, convenient application, efficient sealing keeping and excellent wearability and reliability, etc., therefore the present invention can be utilized in match with a refrigerator for refreshing and cold storage, in match with a microwave oven, or be placed on a high frame dishwasher for application.

Description

technical field [0001] The invention relates to a vacuum sealing display film used in a fresh-keeping container and a press-type vacuum fresh-keeping box with improved structure. Background technique [0002] There are many known structures for manually pressing the vacuum fresh-keeping box. For example, Chinese patent 96206090.9 discloses a hand-pressed vacuum fresh-keeping box, which is composed of a box body, a box cover, and a sealing ring, and an air intake and exhaust control device is installed on the box cover. , and can make a "flutter" sound to indicate the intake and exhaust conditions. [0003] Another example is that Chinese patent 97241858. X discloses a vacuum preservation box, which is composed of a box body, a lid, a sealing ring, a stop pad, a flip cover, and a stop cover. Vacuum, and then the stop pad is closed and sealed by atmospheric pressure to achieve the purpose of vacuum preservation. [0004] The above fresh-keeping boxes can achieve the purpose ...

AI Technical Summary

Problems solved by technology

[0004] The above fresh-keeping boxes can achieve the purpose of vacuuming without the use of additional air extraction devices to achieve the purpose of fresh-keeping, but the vacuum sealing film is a flat diaphragm, which relies on its bending deformation to achieve vacuum sealing, as shown in Figure 1, which cannot be displayed intuitively. vacuum state

[0005] Then, someone has invented a fresh-keeping box that can indicate the vacuum state of the container. For example, Chinese patent 99253000.8 discloses a kind of tea and food fresh-keeping storage container. It is to add a sealing cover on the container body mouth; Indicating film, the top wall has a suction hole and a suction pipe, the pipe is attached with a pipe clip and a pipe plug connected to the pipe with a tie, the pipe clip and pipe plug can be used to seal the air after the suction is completed, and the vacuum condition of the container can be often observed. The disadvantage is that it must be used with the exhaust device

[0006] There are also people who further combine the above-mentioned known technologies, and there are fresh-keeping boxes that can indicate the vacuum state of the container by manual pressing, such as Chinese patents 02160431.2 and 200320108228. Large, as shown in Figure 2, the flip stroke of the vacuum display film is L 1 , its turning stroke is large, and it is easy to rebound slowly due to improper turning, so that it cannot effectively maintain the seal; at the same time, its hemispherical diaphragm is connected to the top side of the sealing diaphragm body, and it is easy to be fatigued and damaged when vacuum suction

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