Inflatable buffer bag

Abstract

The utility model relates to the technical field of packaging bags, in particular to an inflatable buffer bag. The film comprises a first outer film and a second outer film which are correspondingly arranged up and down, a first inner film is arranged on the side, facing the second outer film, of the first outer film, a second inner film is arranged on the side, facing the first outer film, of the second outer film, and the rear ends of the first inner film and the second inner film are connected into a whole to form an inner film layer. The rear end of the first outer film and the rear end of the second outer film are connected into a whole to form an outer film layer, a plurality of middle heat sealing lines are formed between the inner film layer and the outer film layer, a sealed middle sealing cavity is formed in the inner rings of the middle heat sealing lines, and the middle sealing cavity and the inflation cavity are separated through the middle heat sealing lines. According to the utility model, a plurality of independently sealed middle sealing cavities are formed on the inflation cavity by arranging the middle heat sealing lines, so that the inner film layer can better wrap the surface of an article, the article is stably wrapped and clamped, the wrapped article is prevented from being collided and damaged, and the packaging and using effects are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to an inflatable cushioning bag. Background Art

[0002] In order to prevent collision and shock during product packaging and transportation, most products are packaged in air-filled shockproof air column packaging bags. The air column bags used in the prior art are composed of several air columns connected together, and the air columns are separated by heat-sealed lines. During use, it is sometimes necessary to fold the air column bag into a certain shape and then wrap the items inside for protection. Although the wrapped items are not easily damaged by collision with the outside, the items in the packaging cavity are easily damaged by collision with each other, which affects the use effect. Utility Model Content

[0003] In view of the shortcomings of the above-mentioned existing production technology, the present application provides an inflatable cushioning bag, which greatly improves the wrapping properties of the packaged items, ensures that the wrapped items are not damaged by mutual collision, and improves the packaging effect.

[0004] The technical solution adopted by the utility model is as follows:

[0005] An inflatable cushioning bag comprises a first outer film and a second outer film which are arranged correspondingly in the upper and lower parts, a first inner film is arranged on a side of the first outer film facing the second outer film, and a second inner film is arranged on a side of the second outer film facing the first outer film, and left and right sides of the first outer film, the first inner film, the second outer film, and the second inner film are sealed and connected by side heat-sealing lines; the first inner film and the second inner film are connected at the rear ends to form an inner film layer as a whole, the first outer film and the second outer film are connected at the rear ends to form an outer film layer as a whole, and the first outer film and the first inner film are sealed and connected at the front end by a first front heat-sealing line; an inflation cavity is formed between the outer film layer and the inner film layer, a packaging cavity for accommodating articles is formed between the first inner film and the second inner film, and an opening is formed between the front ends of the first inner film and the second inner film, and articles can be loaded into the packaging cavity through the opening; a plurality of intermediate heat-sealing lines are formed between the inner film layer and the outer film layer, the inner circle of the intermediate heat-sealing lines forms a sealed intermediate sealing cavity, and the intermediate heat-sealing lines separate the intermediate sealing cavity and the inflation cavity from each other.

[0006] Furthermore, a second front heat seal line is formed between the second inner film and the second outer film, a heat-resistant layer is intermittently coated between the second inner film and the second outer film, the heat-resistant layer is arranged across the second front heat seal line, an air valve air inlet is formed at the position of the heat-resistant layer, an airway heat seal line is formed in front of the second inner film and the second outer film, the airway heat seal line is sealed between the second inner film and the second outer film to form an air inlet channel and an inflation port, the inflation port connects the external environment with the air inlet channel, and the air inlet channel is connected to the air valve air inlet.

[0007] Furthermore, two layers of air valve membranes are arranged between the second inner membrane and the second outer membrane. The two layers of air valve membranes are connected to the surface of the second outer membrane through air valve membrane heat sealing lines. An air valve cavity is formed between the two layers of air valve membranes. One end of the air valve cavity is connected to the air valve air inlet, and the other end of the air valve cavity is connected to the inflation cavity.

[0008] Furthermore, a plurality of intermediate heat-sealing lines are equidistantly distributed along the length direction on the surfaces of the first outer film and the second outer film.

[0009] Furthermore, the middle heat-sealing line is in a circular shape.

[0010] Furthermore, a plurality of air holes are arranged on the upper and lower end surfaces of the middle sealed cavity, and the plurality of air holes connect the packaging cavity with the external environment.

[0011] The beneficial effects of the utility model are as follows:

[0012] The utility model forms a plurality of independently sealed intermediate sealing cavities on the inflation cavity by arranging an intermediate heat-sealing line, so that the inner film layer can be better wrapped on the surface of the article, forming a stable wrapping clamp for the article, ensuring that the wrapped articles are not damaged by mutual collision, and improving the packaging effect; the utility model arranges air holes on the intermediate sealing cavity, ensuring that the air inside and outside the packaging cavity can circulate smoothly, reducing the occurrence of rotting of fresh vegetables and fruits in the packaging bag due to lack of air circulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is the front view of the utility model.

[0014] Figure 2 It is the rear view of the utility model.

[0015] Figure 3 It is a cross-sectional view of the utility model in a non-inflated state.

[0016] Figure 4 It is a cross-sectional view of the utility model in the inflated state.

[0017] Figure 5 This is a structural diagram of another embodiment of the present utility model.

[0018] Figure 6 It is a cross-sectional view of the air valve membrane of the utility model.

[0019] Among them: 1. first outer film; 2. first inner film; 3. second outer film; 4. second inner film; 5. side heat seal line; 6. first front heat seal line; 7. packaging cavity; 8. second front heat seal line; 10. inflation cavity; 11. air valve film; 12. heat-resistant layer; 13. airway heat seal line; 14. air inlet channel; 15. inflation port; 16. middle heat seal line; 17. middle sealing cavity; 18. air vent; 19. air valve cavity. DETAILED DESCRIPTION

[0020] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0021] like Figure 3 As shown, an inflatable cushion bag comprises a first outer film 1 and a second outer film 3 correspondingly arranged in the upper and lower parts, a first inner film 2 is arranged on the side of the first outer film 1 facing the second outer film 3, and a second inner film 4 is arranged on the side of the second outer film 3 facing the first outer film 1. The left and right sides of the first outer film 1, the first inner film 2, the second outer film 3 and the second inner film 4 are sealed and connected by a side heat sealing line 5 formed by a heat sealing process.

[0022] like Figure 1 and Figure 2 As shown, the rear ends of the first inner film 2 and the second inner film 4 are connected as a whole to form an inner film layer, the rear ends of the first outer film 1 and the second outer film 3 are connected as a whole to form an outer film layer, and the front ends of the first outer film 1 and the first inner film 2 are sealed and connected by a first front heat sealing line 6 formed by a heat sealing process.

[0023] like Figure 3 and Figure 4 As shown, an inflation cavity 10 is formed between the outer film layer and the inner film layer, a packaging cavity 7 for accommodating items is formed between the first inner film 2 and the second inner film 4, and an opening is formed between the front ends of the first inner film 2 and the second inner film 4, through which items can be loaded into the packaging cavity 7.

[0024] like Figure 2 and Figure 6 As shown, a second front heat seal line 8 is formed between the second inner film 4 and the second outer film 3 by heat sealing process, and a heat-resistant layer 12 is intermittently coated between the second inner film 4 and the second outer film 3 by printing. The heat-resistant layer 12 is arranged across the second front heat seal line 8, and the heat-resistant layer 12 is located at a position where it will not be heat-sealed and connected as a whole during heat sealing, thereby forming an air valve air inlet. An airway heat seal line 13 is formed by heat sealing process at the front of the second inner film 4 and the second outer film 3. The airway heat seal line 13 is sealed between the second inner film 4 and the second outer film 3 to form an air inlet channel 14 and an air charging port 15. The air charging port 15 connects the external environment with the air inlet channel 14, and the air inlet channel 14 connects with the air valve air inlet. Two layers of air valve membranes 11 are arranged between the second inner membrane 4 and the second outer membrane 3. The two layers of air valve membranes 11 are connected to the surface of the second outer membrane 3 through air valve membrane heat sealing lines. An air valve cavity 19 is formed between the two layers of air valve membranes 11. One end of the air valve cavity 19 is connected to the air valve air inlet, and the other end of the air valve cavity 19 is connected to the inflation cavity 10. When in use, an external inflation device is inserted into the inflation port 15 for inflation. Air enters the air inlet channel 14 through the inflation port 15, then enters the air valve cavity 19 through the air valve air inlet, and finally enters the inflation cavity 10. When the inflation cavity 10 is filled with air and bulged, it compresses the air valve membrane 11, so that the two layers of air valve membranes 11 fit tightly, close the air valve air inlet, and prevent the gas in the inflation cavity 10 from leaking out.

[0025] like Figure 1 and Figure 2 As shown, a plurality of annular intermediate heat-sealing lines 16 are formed between the inner film layer and the outer film layer by heat-sealing process, and the plurality of intermediate heat-sealing lines 16 are evenly distributed along the length direction on the surface of the first outer film 1 and the second outer film 3. The inner circle of the annular intermediate heat-sealing line 16 forms a sealed intermediate sealing cavity 17, and the intermediate heat-sealing line 16 separates the intermediate sealing cavity 17 and the inflation cavity 10 from each other. When the inflation cavity 10 bulges and deforms during inflation, the intermediate sealing cavity 17 remains unchanged, so that the inner film layer can be better wrapped on the surface of the article under air pressure, so that the wrapped article is more stable and is not easy to be damaged by collision during transportation.

[0026] like Figure 5 As shown, multiple air holes 18 are provided on the upper and lower end surfaces of the middle sealed cavity 17, and the multiple air holes 18 connect the packaging cavity 7 with the external environment. The air holes 18 can allow air to circulate inside and outside the packaging cavity 7, thereby reducing the occurrence of fresh fruits and vegetables in the packaging cavity 7 being rotten due to lack of air circulation.

[0027] The working principle of the utility model is as follows: when in use, fresh fruits and vegetables are placed into the packaging cavity 7 through the opening, and then the external inflator is inserted into the inflating port 15 for inflating, and the air first enters the air valve inflating cavity 14, and then enters the inflating cavity 10 along the air valve inlet. The inflating cavity 10 bulges and deforms during inflating, and the middle sealing cavity 17 remains unchanged, so that the inner film layer can be better wrapped around the surface of the object under air pressure, so that the wrapped object is more stable and is not easily damaged by collision during transportation.

[0028] The utility model can not only play a good buffering and protective role for perishable foods such as vegetables and fruits, but also play a role in air circulation, thereby reducing the occurrence of rotting of fresh vegetables and fruits in the packaging bag due to lack of air circulation.

[0029] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. An inflatable cushioning bag, comprising a first outer film (1) and a second outer film (3) arranged correspondingly above and below, characterized in that: A first inner film (2) is arranged on the side of the first outer film (1) facing the second outer film (3), and a second inner film (4) is arranged on the side of the second outer film (3) facing the first outer film (1). The left and right sides of the first outer film (1), the first inner film (2), the second outer film (3) and the second inner film (4) are sealed and connected by a side heat-sealing line (5); the rear ends of the first inner film (2) and the second inner film (4) are connected to form an inner film layer, the rear ends of the first outer film (1) and the second outer film (3) are connected to form an outer film layer, and the front ends of the first outer film (1) and the first inner film (2) are sealed and connected by a first front heat-sealing line (5). The outer film layer and the inner film layer are sealed and connected by heat sealing lines (6); an inflation cavity (10) is formed between the outer film layer and the inner film layer; a packaging cavity (7) for accommodating articles is formed between the first inner film (2) and the second inner film (4); an opening is formed between the front ends of the first inner film (2) and the second inner film (4); articles can be loaded into the packaging cavity (7) through the opening; a plurality of intermediate heat sealing lines (16) are formed between the inner film layer and the outer film layer; the inner circle of the intermediate heat sealing lines (16) forms a sealed intermediate sealing cavity (17); the intermediate heat sealing lines (16) separate the intermediate sealing cavity (17) and the inflation cavity (10) from each other.

2. An inflatable cushion bag as claimed in claim 1, characterized in that: A second front heat-sealing line (8) is formed between the second inner film (4) and the second outer film (3); a heat-resistant layer (12) is intermittently coated between the second inner film (4) and the second outer film (3); the heat-resistant layer (12) is arranged across the second front heat-sealing line (8); an air valve air inlet is formed at the position of the heat-resistant layer (12); an airway heat-sealing line (13) is formed at the front of the second inner film (4) and the second outer film (3); the airway heat-sealing line (13) is sealed between the second inner film (4) and the second outer film (3) to form an air inlet channel (14) and an inflation port (15); the inflation port (15) connects the external environment with the air inlet channel (14); and the air inlet channel (14) is connected with the air valve air inlet.

3. An inflatable cushion bag as claimed in claim 2, characterized in that: Two layers of air valve membranes (11) are arranged between the second inner membrane (4) and the second outer membrane (3); the two layers of air valve membranes (11) are connected to the surface of the second outer membrane (3) via air valve membrane heat sealing lines; an air valve cavity (19) is formed between the two layers of air valve membranes (11); one end of the air valve cavity (19) is connected to the air valve air inlet, and the other end of the air valve cavity (19) is connected to the inflation cavity (10).

4. An inflatable cushion bag as claimed in claim 1, characterized in that: The plurality of intermediate heat-sealing lines (16) are distributed equidistantly along the length direction on the surfaces of the first outer film (1) and the second outer film (3).

5. An inflatable cushion bag as claimed in claim 4, characterized in that: The middle heat-sealing line (16) is in the shape of a ring.

6. An inflatable cushion bag as claimed in claim 5, characterized in that: A plurality of air holes (18) are provided on the upper and lower end surfaces of the middle sealed cavity (17), and the plurality of air holes (18) connect the packaging cavity (7) with the external environment.

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