CN101746550A - vacuum bag - Google Patents

Abstract

The invention relates to a vacuum packaging bag, which comprises a bag body, wherein a vacuum air extraction valve is arranged on a plastic bag body, and the vacuum packaging bag is characterized in that the vacuum air extraction valve comprises a valve bottom sheet, a switch seat, a switch and a sealing gasket; the valve bottom sheet is connected with the bag body film, and the switch seat is arranged on the valve bottom sheet; the bottom surface of the switch seat is provided with an air exhaust opening, a sealing gasket is arranged on the air exhaust opening, and a switch capable of sliding back and forth on the switch seat is arranged on the sealing gasket. The invention overcomes the defects of the technology, and provides the vacuum packaging bag which prevents air outside the bag from reversely flowing into the vacuum packaging bag after vacuum pumping, and the vacuum packaging bag has good vacuum pumping and sealing effects, reasonable structure and convenient use.

Description

vacuum bag

[technical field]

The present invention relates to a vacuum packaging bag.

[Background technique]

At present, after the exhaust valve on many vacuum packaging bags is exhausted, the air outside the vacuum packaging bag will flow reversely into the vacuum packaging bag through the exhaust valve, so that the vacuum packaging bag has been evacuated again. There is air, therefore, the vacuuming effect of the above-mentioned vacuum packaging bag is not ideal enough, in order to solve the above-mentioned problem, the inventor has designed this patent.

[Content of the invention]

The invention overcomes the disadvantages of the above-mentioned technologies, and provides a vacuum packaging bag that prevents the air outside the bag from flowing reversely into the vacuum packaging bag after vacuuming. The packaging bag has good vacuuming and sealing effects, a reasonable structure, and is easy to use.

To achieve the above object, the present invention adopts the following technical solutions:

A vacuum packaging bag, comprising a bag body, a vacuum pumping valve is arranged on the plastic bag body, characterized in that the vacuum pumping valve includes a valve film, a switch seat, a switch, and a sealing pad; the valve film and the bag body Membrane connection, the switch seat is set on the valve plate; the bottom surface of the switch seat is provided with an air suction port, the air suction port is provided with a gasket, and the gasket is provided with a switch that can slide back and forth on the switch seat;

Ribs or bosses are provided around the air suction port as mentioned above;

As mentioned above, the bottom surface of the switch seat is provided with a positioning shaft, and the sealing pad is provided with a positioning hole and is sleeved on the positioning shaft;

The two opposite vertical sides of the above-mentioned switch base are provided with convex rails, and the two opposite sides of the switch are provided with sliding grooves, and the sliding grooves of the switch cover the convex rails and can slide;

A filter screen is provided under the above-mentioned valve plate, and a number of small holes are arranged on the filter screen, and the small holes communicate with the air suction port;

The bag film as described above is attached to the upper surface of the valve back sheet.

Compared with the prior art, the beneficial effect of the present invention is: when the vacuum packaging bag is exhausted, slide the switch in the direction of the air outlet, the switch presses the gasket to block the air outlet, and the outside air cannot enter through the air outlet , the vacuum packaging bag maintains a vacuum state, so that the air outside the bag will not flow into the bag in reverse; therefore, the present invention will not flow into the bag after the bag is vacuumed, and the vacuuming and sealing effects are ideal.

[Description of drawings]

Fig. 1 is a plan view of the present invention;

Fig. 2 is a perspective view of the present invention;

Fig. 3 is the plane view of vacuum pumping valve;

Fig. 4 is A-A sectional view of Fig. 3;

Fig. 5 is a sectional view of the vacuum pumping valve in an open state;

Fig. 6 is a sectional view of the vacuum pumping valve in a closed state;

Fig. 7 is the B-B sectional view of Fig. 3;

Figure 8 is an exploded view of the vacuum pumping valve.

[Detailed ways]

A further detailed description will be made below in conjunction with the accompanying drawings and embodiments of the present invention:

The present invention is a vacuum packaging bag, comprising a bag body 1, a vacuum pumping valve 2 is arranged on the plastic bag body 1, and the vacuum pumping valve 2 includes a valve plate 3, a switch seat 4, a switch 5, and a sealing pad 6 The valve film 3 is connected with the film of the bag body, and the switch seat 4 is arranged on the valve film; the bottom surface of the switch seat is provided with an air outlet 7, and the air outlet is provided with a sealing gasket 6, and the sealing gasket is provided with a switch that can slide back and forth on the switch seat 5.

When the vacuum packaging bag needs to be pumped, the switch slides away from the suction port. At this time, the gasket does not seal the suction port. When pumping, the gasket bends upward, and the gas is drawn out from the gap between the gasket and the suction port; When the suction of the vacuum packaging bag is completed, slide the switch to the direction of the suction port, the switch presses the gasket to block the suction port, the outside air cannot enter through the suction port, and the vacuum packaging bag remains in a vacuum state.

Ribs 71 or bosses are arranged around the air outlet, so that the gasket can press the air outlet more tightly.

The bottom surface of the switch base 4 is provided with a positioning shaft 41, and the sealing pad 6 is provided with a positioning hole 61 and is sleeved on the positioning shaft. Like this, when the switch is pressed against the sealing pad and slides back and forth, the sealing pad can be positioned by the positioning shaft without running away. Lose.

Two opposite vertical sides of the switch base 4 are provided with protruding rails 42, two opposite sides of the switch 5 are provided with slide grooves 51, and the slide grooves of the switch cover the convex rails and are slidable.

The bottom plate 3 of the valve is provided with a filter screen 8, and the filter screen is provided with some apertures, and the apertures communicate with the air outlet 7. The filter screen is to prevent the debris of the bag body 1 from blocking the air inlet.

The bag body film is connected with the upper surface of the valve bottom sheet 3 . The shape of the valve base is a circular plastic sheet, of course, the valve base can also be made of other hard materials. The valve base can also be of other shapes.

The sealing sheet is a soft plastic sheet, of course, the sealing sheet can also be made of other materials.

Described plastic bag body 1 is formed by the front bag sheet 11 and the back bag sheet 12 one side retaining thing mouth and remaining edge welded together, and the place of putting thing mouth is provided with slide fastener; The inner surface is rough. The inner surface of the back pocket sheet 12 is integrally hot-pressed with a plurality of grooves 13, and the air is drawn out along the grooves during pumping, so that the pumping is easier and more thorough. The vacuum pumping valve 2 is arranged on the front pocket sheet 11 .

Claims (6)

1. A vacuum packaging bag, comprising a bag body (1), on which a vacuum pumping valve (2) is provided on the plastic bag body (1), it is characterized in that said vacuum pumping valve (2) includes a valve film (3), switch seat (4), switch (5), sealing gasket (6); the valve film (3) is connected with the bag body film, and the switch seat (4) is arranged on the valve film; the bottom surface of the switch seat is provided with an air outlet (7), the air suction port is provided with a gasket (6), and the gasket is provided with a switch (5) that can slide back and forth on the switch base. 2. A vacuum packaging bag according to claim 1, characterized in that ribs (71) or posts are provided around the air suction port. 3. A vacuum packaging bag according to claim 1 or 2, characterized in that the bottom surface of the switch seat (4) is provided with a positioning shaft (41), the gasket (6) is provided with a positioning hole (61) and Set on the positioning shaft. 4. A vacuum packaging bag according to claim 3, characterized in that two opposite vertical sides of the switch seat (4) are provided with raised rails (42), two opposite sides of the switch (5) A chute (51) is provided on the side, and the chute of the switch entangles the protruding rail and can slide. 5. A vacuum packaging bag according to claim 1, characterized in that a filter screen (8) is provided under the valve plate (3), and a number of small holes are arranged on the filter screen, and the small holes are connected with the air suction port (7). ) are connected. 6. A vacuum packaging bag according to claim 1, characterized in that the bag body film is connected to the upper surface of the valve bottom sheet (3).

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