A new type of air inlet nozzle flow channel and air column bag

Abstract

A novel air inlet nozzle flow channel and an air column bag, wherein the air inlet nozzle flow channel comprises an inlet and an outlet, and the air inlet nozzle flow channel is divided by a sealing line to form a plurality of bends, and the air column bag comprises the air inlet nozzle flow channel, and also comprises an air inlet channel and a plurality of air column bag units formed by heat-sealing an upper and a lower film, and the inlet and the outlet of the air inlet nozzle flow channel are respectively connected to the air inlet channel and the air column bag unit, and the present invention has the advantages of good air tightness and stable heat-sealing effect.

Description

Technical Field

[0001] The invention belongs to the technical field of air intake flow channels, and in particular relates to a novel air intake nozzle flow channel and an air column bag. Background Art

[0002] Air column bags, also known as cushioning air column bags, inflatable bags, bubble column bags, and columnar inflatable bags, are new packaging materials filled with natural air. Most of the air column bags currently on the market use a one-way valve inlet flow channel. The advantages of this type of air column bag are: after the high-pressure gas rushes into the air column bag, it does not need to be heat-sealed, and the gas will not leak back, thus achieving sealing. However, the disadvantages are: 1. The one-way valve area is a three-layer film, which uses more materials and is more expensive. In addition, due to the licensing fees of the one-way valve patent, the production cost is higher; 2. The one-way valve structure can lock the gas, but if it is left for a long time (such as 3 to 6 months), the gas will slowly leak from the one-way valve, resulting in insufficient internal air pressure. In addition, there are also air column bags without one-way valves on the market, which are made of heat-sealed upper and lower layers of film. The air inlet channel and the air column bag body are directly connected through a straight air inlet nozzle, such as Figure 1 The disadvantage of this air inlet nozzle structure is that high-pressure gas has been injected into the air column bag body during the compression heat sealing. After the heat sealing is completed, the compression force disappears, but the temperature of the heat seal has not cooled down at this time. The high-pressure gas will open the upper and lower layers of the heat-sealed film, resulting in heat sealing failure. Summary of the invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a novel air inlet nozzle flow channel and air column bag with good air tightness and stable heat sealing effect.

[0004] The technical solution of the present invention is as follows:

[0005] A novel air inlet nozzle flow channel comprises an inlet and an outlet, and the air inlet nozzle flow channel is divided by sealing lines to form a plurality of bends.

[0006] Preferably, the inlet and the outlet are not on the same straight line.

[0007] Preferably, there is one curve.

[0008] Preferably, there are at least two bends.

[0009] Preferably, at least one of the inlet and outlet is of an involute type.

[0010] Preferably, the bend is transitioned through a straight line or a curve.

[0011] The present invention also provides an air column bag, which includes an air inlet nozzle flow channel, an air inlet channel formed by heat-sealing upper and lower films, and a plurality of air column bag units, wherein the inlet and outlet of the air inlet nozzle flow channel are respectively connected to the air inlet channel and the air column bag unit.

[0012] Preferably, the inlet is located on one side of the air column bag unit.

[0013] Preferably, the horizontal distance between the inlet and the outlet is greater than the width of the air column bag unit.

[0014] The beneficial effects of the present invention are as follows: the air inlet nozzle flow channel is divided into several bends by the sealing line, and multiple seals are formed during the heat sealing process. In addition, the heat sealing line at the inlet is cooled earlier than the heat sealing line at the outlet, thereby avoiding the phenomenon of being opened by high-pressure gas due to insufficient heat sealing, thereby ensuring the air tightness and heat sealing effect of the air column bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Figure 1 is a background technology diagram;

[0016] Figure 2 It is a structural schematic diagram of Example 1;

[0017] Figure 3 It is a structural schematic diagram of Example 2;

[0018] Figure 4 It is a structural schematic diagram of Example 3;

[0019] Figure 5 It is a structural schematic diagram of Example 4;

[0020] Figure 6 It is a structural schematic diagram of Example 5;

[0021] Figure 7 It is a structural schematic diagram of Example 6;

[0022] Figure 8 is another structural schematic diagram of Example 6;

[0023] Fig. 9 is a schematic structural diagram of Example 7;

[0024] Fig.10 is another structural schematic diagram of Example 7;

[0025] Fig.11 It is a structural schematic diagram of Example 8;

[0026] Fig.12 is a schematic structural diagram of Example 9;

[0027] In the figure: 1. air inlet channel, 2. air column bag unit, 3. air inlet nozzle flow channel, 31. sealing line, 4. inlet, 5. outlet, 6. heat sealing line. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] Embodiment 1:

[0030] An air column bag with an air inlet nozzle flow channel, comprising an air inlet channel 1 formed by heat-sealing upper and lower films and a plurality of air column bag units 2, wherein the air inlet nozzle flow channel 3 comprises an inlet 4 and an outlet 5, the inlet 4 and the outlet 5 of the air inlet nozzle flow channel 3 are respectively connected to the air inlet channel 1 and the air column bag unit 2, and the air inlet nozzle flow channel 3 is separated by a sealing line 31 to form two right-angle bends, such as Figure 2 As shown, during the heat sealing process, after the inlet 4 area is heat sealed, the heat sealing pressing area (rectangular frame in the figure) moves to the right. At this time, the high-pressure gas is still locked in the right area, and the gas will not affect the heat sealing line 6 at the inlet 4. The heat sealing line 6 begins to cool down. When the heat pressing area moves to the right to the outlet 5 area, the high-pressure gas will flow through the air inlet nozzle flow channel 3 to the heat sealing line 6 of the inlet 4 area, and will also pass through the middle sealing line 31 on the way, so as to block the high-pressure gas and provide multiple protections.

[0031] Embodiment 2:

[0032] The difference between this embodiment and embodiment 1 is that the air inlet nozzle flow channel 3 is divided by the sealing line 31 to form four right-angle bends, such as Figure 3 As shown, increasing the number of bends can make the effect of blocking high-pressure gas more obvious.

[0033] Embodiment 3:

[0034] The difference between this embodiment and embodiment 1 is that the angle of the bend is greater than 90 degrees. Figure 4 shown.

[0035] Embodiment 4:

[0036] The difference between this embodiment and embodiment 1 is that the number of right-angle bends is 1. Figure 5 shown.

[0037] Embodiment 5:

[0038] The difference between this embodiment and embodiment 4 is that the angle of the curve is greater than 90 degrees. Figure 6 shown.

[0039] Embodiment 6:

[0040] The difference between this embodiment and embodiment 1 is that at least one of the inlet 4 and the outlet 5 is of a progressively open type, so that the air intake is smoother. Specifically, the progressively open structure is that the sealing line 31 at the progressively open inlet 4 or outlet 5 is a multi-segment line, such as Figure 7 As shown, it can also be a curve, such as Figure 8 shown.

[0041] Embodiment 7:

[0042] The difference between this embodiment and embodiment 1 is that the straight line or curve transition is used at the bend to make the air intake smoother. The specific transition structure is that the sealing line 31 at the bend is a multi-segment line, such as Fig. 9 As shown, it can also be a curve, such as Fig.10 shown.

[0043] Embodiment 8:

[0044] The difference between this embodiment and embodiment 5 is that the inlet 4 is arranged on one side of the air column bag unit 2. Fig.11 As shown, a greater offset distance is formed with the outlet 5, which can ensure that the heat sealing line 6 at the inlet 4 has enough time to cool down during heat sealing.

[0045] Embodiment 9:

[0046] The difference between this embodiment and embodiment 8 is that a right-angle bend is added in the middle of the air inlet nozzle flow channel 3, such as Fig.12 As shown, the effect of blocking high-pressure gas is more obvious.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A new type of air intake nozzle flow channel, characterized in that: The air inlet nozzle flow channel (3) comprises an inlet (4) and an outlet (5). The air inlet nozzle flow channel (3) is divided by a sealing line (31) to form a plurality of bends. During the heat sealing process, multiple seals are formed with the heat sealing line (6). The heat sealing line (6) at the inlet (4) cools down earlier than the heat sealing line (6) at the outlet (5).

2. The new air intake nozzle flow channel according to claim 1, characterized in that: The import (4) and the outlet (5) are not on the same straight line.

3. The new air intake nozzle flow channel according to claim 1, characterized in that: There is one curve.

4. The new air intake nozzle flow channel according to claim 1, characterized in that: There are at least two bends.

5. The new air intake nozzle flow channel according to claim 4, characterized in that: At least one of the inlet (4) and the outlet (5) is involute.

6. The new air intake nozzle flow channel according to claim 4, characterized in that: The bend is transitioned through a straight line or a curve.

7. An air column bag, characterized in that: It comprises the air inlet nozzle flow channel (3) as described in any one of claims 1 to 6, and also comprises an air inlet channel (1) and a plurality of air column bag units (2) formed by heat-sealing the upper and lower films, wherein the inlet (4) and the outlet (5) of the air inlet nozzle flow channel (3) are respectively connected to the air inlet channel (1) and the air column bag unit (2).

8. The air column bag according to claim 7, characterized in that: The inlet (4) is located on the side of the air column bag unit (2).

9. The air column bag of claim 8, characterized in that: The horizontal distance between the inlet (4) and outlet (5) is greater than the width of the air column bag unit (2).

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