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

Abstract

The invention relates to a vacuum-sealed display film used in a fresh-keeping container and a press-type vacuum fresh-keeping box with improved structure; the press-type vacuum fresh-keeping box has a box body and a box cover that can be sealed and combined; a vent hole is arranged on the box cover. The groove, the air hole extends upwards and is fitted with a seal; one end of the groove is hinged with a flip cover, a stop cover is fastened on the flip cover, and a stop cover is positioned on the inner shoulder of the stop cover that can be attached to the upper surface of the seal. A combined vacuum-sealed display film, the vacuum-sealed display film includes an annular diaphragm body and a flexible deformable film; the flexible deformable film is a frustum of cone that extends upward from the bottom side of the annular diaphragm body and is integrally formed and can be turned upside down . The utility model has the advantages of simple structure, convenient use, effective sealing, reliability and durability, and can be used in conjunction with refrigerators for fresh-keeping and refrigeration, microwave ovens or high-rack dishwashers.

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 all achieve the purpose ...

AI Technical Summary

Problems solved by technology

[0004] The above fresh-keeping boxes all 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, such as figure 1 As shown, the vacuum state cannot be visually displayed

[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. big, such as figure 2 As shown, the turning 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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