An airbag for use as a packing for inflated bottle-shaped items

Abstract

This utility model relates to the field of air column bag technology, and in particular to an airbag for inflating bottle-shaped items. It includes a front membrane and a back membrane arranged correspondingly at the front and back. The front membrane is formed by a front outer membrane and a front inner membrane arranged correspondingly at the front and back, creating a front air cavity. A heat-sealing line is provided at the top of the front air cavity to form a bottle top covering area. A number of heat-sealing lines are arranged longitudinally in the upper part of the front air cavity to form a bottle mouth covering area. A number of heat-sealing lines are arranged longitudinally in the lower part of the front air cavity to form a bottle body covering area. This utility model, by setting different heat-sealing lines on the surface of the air cavity, forms bottle top covering area, bottle mouth covering area, bottle body covering area, and bottle bottom covering area, ultimately achieving tight wrapping of the bottle-shaped item, providing all-round protection, avoiding damage to the bottle-shaped item caused by shaking during transportation, and improving the safety of product transportation.

Description

Technical Field

[0001] This utility model relates to the field of air column bag technology, and in particular to an airbag bag for packing bottle-shaped items after inflation. Background Technology

[0002] To protect products from impacts and shocks during transportation, air-filled shock-absorbing bags are commonly used. Current technology uses air-filled bags composed of several interconnected air columns, separated by heat-sealing lines. In practice, sometimes the air-filled bags need to be folded into a specific shape before being used to wrap the items for protection.

[0003] Bottle-shaped items, such as wine bottles and vases, have unique structures, with the mouth size being much smaller than the body size. When using existing air column bags to package bottle-shaped items, the air column bag can only fit snugly against the bottle body, leaving the mouth area unsupported. This causes the bottle to wobble during transportation and is easily damaged by external impacts. Utility Model Content

[0004] This application addresses the shortcomings of existing production technologies by providing an airbag for inflating bottle-shaped items. This airbag can form different wrapping areas that tightly wrap different parts of the bottled items, providing all-around protection and preventing damage to the bottled items caused by shaking during transportation, thus improving the safety of product transportation.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An airbag for inflating bottle-shaped items includes a front film and a back film arranged opposite each other. The left and right sides of the front film and the back film are sealed together by side heat-sealing lines. The top edge of the front film and the top edge of the back film are connected as one piece, forming a packaging space to accommodate the bottle-shaped item. The bottom edge of the front film and the bottom edge of the back film are separated to form an opening. The front film consists of a front outer film and a front inner film arranged opposite each other to form a front air cavity. A front bottle top heat-sealing line is provided at the top of the front air cavity to form a bottle top covering area. A number of heat-sealing lines are arranged longitudinally in the upper part of the front air cavity to form a bottle mouth covering area. A number of heat-sealing lines, B in number, are longitudinally arranged in the lower part of the front air cavity to form a bottle body wrapping area, where B > A, A is a natural number, and B is a positive integer. The back membrane is formed by a back outer membrane and a back inner membrane arranged correspondingly at the front and back, forming a back air cavity. The top of the back air cavity is connected to the top of the front air cavity. A back bottle top heat-sealing line is arranged in the upper part of the back air cavity to form a bottle top wrapping area. A number of heat-sealing lines, A in number, are longitudinally arranged in the upper part of the back air cavity to form a bottle mouth wrapping area. A number of heat-sealing lines, B in number, are longitudinally arranged in the lower part of the back air cavity to form a bottle body wrapping area. A bottle bottom heat-sealing line is arranged in the lower part of the back air cavity to form a bottle bottom wrapping area. The bottle bottom wrapping area can be folded to close the opening formed between the front membrane and the back membrane.

[0007] Furthermore, the left and right sides of the front air chamber are sealed by the front side heat sealing line, and the bottom of the front air chamber is sealed by the horizontally set air inlet heat sealing line. The upper end of the front side heat sealing line extends to the end connecting to the front bottle top heat sealing line, and the lower end of the front side heat sealing line extends to the end connecting to the air inlet heat sealing line.

[0008] Furthermore, a primary longitudinal heat-sealing line is longitudinally arranged in the upper part of the front air cavity, and three secondary longitudinal heat-sealing lines and two tertiary longitudinal heat-sealing lines are longitudinally arranged in the lower part of the front air cavity. The three secondary longitudinal heat-sealing lines and the two tertiary longitudinal heat-sealing lines are alternately arranged along the width direction. The length of the secondary longitudinal heat-sealing line is smaller than that of the tertiary longitudinal heat-sealing line. The upper ends of the secondary and tertiary longitudinal heat-sealing lines are flush with each other, and the lower ends of the tertiary longitudinal heat-sealing lines extend all the way to the lower part of the front air cavity.

[0009] Furthermore, the front bottle top heat seal line includes two symmetrical front arc heat seal lines. The lower ends of the two front arc heat seal lines are connected to the upper ends of the front side heat seal lines on the left and right sides, respectively. Multiple front annular heat seal lines are set at the center of the inner circle of the two front arc heat seal lines. The multiple front annular heat seal lines are distributed along the same circumferential direction. Multiple front circular heat seal lines are set in the area between the front annular heat seal lines and the front arc heat seal lines.

[0010] Furthermore, the front bottle top heat seal line includes three vertically arranged front top heat seal lines. The lower ends of the left and right front top heat seal lines are connected to the upper ends of the left and right side front heat seal lines respectively. The lower end of the middle front top heat seal line is connected to the upper end of the front first-level vertical heat seal line.

[0011] Furthermore, two valve membranes are provided between the front outer membrane and the front inner membrane. The bottom edges of the two valve membranes, the front outer membrane, and the front inner membrane are connected as one unit by the air inlet heat seal line. At least one heat-resistant layer is coated between the bottom edges of the two valve membranes by printing. The at least one heat-resistant layer is distributed along the width direction of the valve membrane and spans the air inlet heat seal line horizontally. The bottom edges of the front outer membrane and the front inner membrane are sealed by the horizontally arranged air inlet channel bottom edge heat seal line. An air inlet channel is provided between the air inlet channel bottom edge heat seal line and the air inlet heat seal line. The air inlet channel is connected to the valve air inlet. An inflation opening is provided on one side of the air inlet channel, and an air inlet channel side heat seal line is provided on the other side of the air inlet channel for sealing.

[0012] Furthermore, the left and right sides of the back air chamber are sealed by the back side heat sealing line, the upper end of the back side heat sealing line extends to the end connecting to the back bottle top heat sealing line, and the lower end of the back side heat sealing line extends to the end connecting to the ring heat sealing line.

[0013] Furthermore, a primary longitudinal heat-sealing line is longitudinally arranged in the upper part of the back air cavity, and three secondary longitudinal heat-sealing lines and two tertiary longitudinal heat-sealing lines are longitudinally arranged in the lower part of the back air cavity. The three secondary longitudinal heat-sealing lines and the two tertiary longitudinal heat-sealing lines are alternately arranged along the width direction. The length of the secondary longitudinal heat-sealing line is smaller than that of the tertiary longitudinal heat-sealing line. The upper ends of the secondary and tertiary longitudinal heat-sealing lines are flush with each other, and the lower ends of the tertiary longitudinal heat-sealing lines extend all the way to the lower part of the back air cavity.

[0014] Furthermore, the heat seal line on the top of the bottle on the back includes two symmetrical arc heat seal lines on the back. The lower ends of the two arc heat seal lines on the back are connected to the upper ends of the heat seal lines on the left and right sides of the back. The upper ends of the two arc heat seal lines on the back are connected to the upper ends of the two arc heat seal lines on the front. Multiple annular heat seal lines on the back are set at the center of the inner circle of the two arc heat seal lines on the back. The multiple annular heat seal lines on the back are distributed along the same circumference. Multiple circular heat seal lines on the back are set in the area between the annular heat seal lines and the arc heat seal lines on the back. The heat seal line on the bottom of the bottle includes a circular heat seal line. The two ends of the circular heat seal line are connected to the lower ends of the heat seal lines on the left and right sides of the back.

[0015] Furthermore, the back bottle top heat seal line includes three vertically arranged back top heat seal lines. The lower ends of the left and right back top heat seal lines are connected to the upper ends of the left and right back side heat seal lines respectively. The lower end of the middle back top heat seal line is connected to the upper end of the first-level back vertical heat seal line. The upper ends of the three back top heat seal lines are connected to the upper ends of the three front top heat seal lines one by one. The bottle bottom heat seal line includes three vertically arranged bottom vertical heat seal lines and one horizontally arranged bottom horizontal heat seal line. The lower ends of the three bottom vertical heat seal lines are connected to the bottom horizontal heat seal line respectively. The upper ends of the left and right bottom vertical heat seal lines are connected to the lower ends of the left and right back side heat seal lines respectively.

[0016] The beneficial effects of this utility model are as follows:

[0017] This invention creates a top-wrapping area, a mouth-wrapping area, a body-wrapping area, and a bottom-wrapping area by setting different heat-sealing lines on the surface of the air chamber. The top-wrapping area inflates and fits tightly against the top of the bottle-shaped item. The mouth-wrapping area inflates and fits tightly against the bottle mouth. The body-wrapping area inflates and fits tightly against the body and bottom sides of the bottle-shaped item. The bottom-wrapping area inflates and fits tightly against the bottom. Furthermore, the bottom-wrapping area can be folded to close the opening, ultimately achieving a tight wrapping of the bottle-shaped item, providing all-around protection, preventing damage caused by shaking during transportation, and improving product transport safety. This invention also allows for easy filling of bottle-shaped items after inflation, improving packaging convenience. Attached Figure Description

[0018] Figure 1 This is a front view of Embodiment 1 of the present utility model.

[0019] Figure 2 This is a front view of the membrane structure of Embodiment 1 of this utility model.

[0020] Figure 3 This is a structural diagram of the back membrane of Embodiment 1 of this utility model.

[0021] Figure 4 This is a cross-sectional view of the front membrane structure of Embodiment 1 of this utility model.

[0022] Figure 5 This is a cross-sectional structural diagram of the back membrane of Embodiment 1 of this utility model.

[0023] Figure 6 This is a cross-sectional structural diagram of the valve diaphragm in Embodiment 1 of this utility model.

[0024] Figure 7This is a front view of the membrane structure of Embodiment 2 of this utility model.

[0025] Figure 8 This is a structural diagram of the back membrane of Embodiment 2 of this utility model.

[0026] Among them: 100, front membrane; 110, front outer membrane; 120, front inner membrane; 130, front arc heat seal line; 131, front annular heat seal line; 132, front circular heat seal line; 133, front top heat seal line; 140, front primary longitudinal heat seal line; 150, front secondary longitudinal heat seal line; 160, front tertiary longitudinal heat seal line; 170, air inlet heat seal line; 180, front side heat seal line; 190, air inlet channel; 191, air inlet channel bottom edge heat seal line; 192, air inlet channel side heat seal line; 200. 210. Back membrane; 220. Back outer membrane; 230. Back arc heat seal line; 231. Back ring heat seal line; 232. Back circular heat seal line; 233. Back top heat seal line; 240. Back primary longitudinal heat seal line; 250. Back secondary longitudinal heat seal line; 260. Back tertiary longitudinal heat seal line; 270. Ring heat seal line; 271. Bottom longitudinal heat seal line; 272. Bottom transverse heat seal line; 280. Back side heat seal line; 300. Valve membrane; 400. Heat-resistant layer; 500. Side heat seal line. Detailed Implementation

[0027] The specific embodiments of this utility model are described below with reference to the accompanying drawings. Example 1:

[0028] like Figure 1 As shown, an airbag for inflating bottle-shaped items includes a front film 100 and a back film 200 arranged opposite each other. The left and right sides of the front film 100 and the back film 200 are sealed together by side heat-sealing lines 500. The top edge of the front film 100 and the top edge of the back film 200 are connected as one piece, forming a packaging space for accommodating the bottle-shaped items between the front film 100 and the back film 200. The bottom edges of the front film 100 and the back film 200 are separated to form an opening. In use, the front film 100 and the back film 200 are first inflated, and then the bottle-shaped items are inserted into the packaging space through the bottom opening.

[0029] like Figure 4 As shown, the front membrane 100 is formed by the front outer membrane 110 and the front inner membrane 120 arranged in a corresponding manner to form a front air cavity.

[0030] like Figure 2As shown, two symmetrical arc-shaped heat-sealing lines 130 are set at the upper part of the front air cavity to form the bottle top covering area. A heat-sealing lines with a number of lengths are set vertically in the upper part of the front air cavity to form the bottle mouth covering area. B heat-sealing lines with a number of lengths are set vertically in the lower part of the front air cavity to form the bottle body covering area. B > A, where A is a natural number and B is a positive integer.

[0031] like Figure 2 As shown, the left and right sides of the front air chamber are sealed by the front side heat sealing line 180, and the bottom of the front air chamber is sealed by the horizontally arranged air inlet heat sealing line 170. The upper end of the front side heat sealing line 180 extends to one end connecting to the front arc heat sealing line 130, and the lower end of the front side heat sealing line 180 extends to one end connecting to the air inlet heat sealing line 170.

[0032] To ensure the bottle top wrapping area fits more closely to the top of the bottled item, such as... Figure 2 As shown, multiple annular heat-sealing lines 131 are arranged at the center of the inner circle of the two front arc heat-sealing lines 130. These annular heat-sealing lines 131 are distributed along the same circumferential direction. Multiple circular heat-sealing lines 132 are arranged in the area between the annular heat-sealing lines 131 and the front arc heat-sealing lines 130. During wrapping, the arrangement of the annular heat-sealing lines 131 and the front arc heat-sealing lines 130 allows the wrapping area at the top of the bottle to fit more closely to the top of the bottled item.

[0033] like Figure 2 As shown, a primary longitudinal heat-sealing line 140 is longitudinally arranged in the upper part of the front air cavity. The primary longitudinal heat-sealing line 140 divides the upper part of the front air cavity into two parallel primary air cavities. In use, the two parallel primary air cavities are tightly wrapped around the bottle mouth of the bottle-shaped item. Three secondary longitudinal heat-sealing lines 150 and two tertiary longitudinal heat-sealing lines 160 are longitudinally arranged in the lower part of the front air cavity. The three secondary longitudinal heat-sealing lines 150 and the two tertiary longitudinal heat-sealing lines 160 are alternately arranged along the width direction. The length of the secondary longitudinal heat-sealing line 150 is less than the length of the tertiary longitudinal heat-sealing line 160. The upper ends of the secondary longitudinal heat-sealing lines 150 and tertiary longitudinal heat-sealing lines 160 are flush, and the lower ends of the tertiary longitudinal heat-sealing lines 160 extend to the lower part of the front air cavity. The entire section of the front secondary longitudinal heat seal line 150 and the non-extended section of the front tertiary longitudinal heat seal line 160 divide the lower part of the front air cavity into six parallel secondary air cavities. In use, the six parallel secondary air cavities are tightly wrapped around the body of the bottle-shaped item. The extended section of the front tertiary longitudinal heat seal line 160 divides the lower part of the front air cavity into three parallel tertiary air cavities. In use, the three parallel tertiary air cavities are tightly wrapped around the bottom side of the bottle-shaped item.

[0034] like Figure 2 and Figure 6 As shown, two valve membranes 300 are disposed between the front outer membrane 110 and the front inner membrane 120. The bottom edges of the two valve membranes 300, the front outer membrane 110, and the front inner membrane 120 are connected as one unit by the air inlet heat sealing line 170. At least one heat-resistant layer 400 is coated between the bottom edges of the two valve membranes 300 by printing. The at least one heat-resistant layer 400 is distributed along the width direction of the valve membrane 300. The heat-resistant layer 400 spans the air inlet heat sealing line 170 vertically. The heat-resistant layer 400 is coated before the heat sealing process of the air inlet heat sealing line 170. The heat-resistant layer 400 is not heat-sealed into one unit during the heat sealing process, thus forming the air valve inlet.

[0035] like Figure 2 As shown, the bottom edge of the outer membrane 110 and the bottom edge of the inner membrane 120 are sealed by a horizontally arranged bottom heat-sealing line 191 of the air intake channel. An air intake channel 190 is provided between the bottom heat-sealing line 191 of the air intake channel and the heat-sealing line 170 of the air inlet. The air intake channel 190 is connected to the air inlet of the air valve. An inflation opening is provided on one side of the air intake channel 190, and a side heat-sealing line 192 of the air intake channel 190 is provided on the other side of the air intake channel 190 for sealing.

[0036] During inflation, an external inflation device is inserted into the inflation opening. Air enters the air intake channel 190 through the inflation port, then enters the valve chamber between the two valve diaphragms 300 through the valve inlet, and then enters the front air chamber. When the front air chamber is full and inflated, it compresses the valve diaphragm 300, causing the two valve diaphragms 300 to fit tightly together, automatically sealing the valve inlet and preventing gas leakage from the front air chamber.

[0037] like Figure 5 As shown, the back membrane 200 is formed by a back outer membrane 210 and a back inner membrane 220 arranged correspondingly at the front and back, forming a back air cavity. The top of the back air cavity is connected to the top of the front air cavity. The top edge of the back outer membrane 210 is connected to the top edge of the front outer membrane 110 as a whole, and the top edge of the back inner membrane 220 is connected to the top edge of the front inner membrane 120 as a whole.

[0038] like Figure 3 As shown, two symmetrical arc-shaped heat-sealing lines 230 are provided on the upper part of the back air cavity to form the bottle top covering area. The upper ends of the two arc-shaped heat-sealing lines 230 and the upper ends of the two arc-shaped heat-sealing lines 130 on the front are connected one-to-one. A number of heat-sealing lines are arranged longitudinally in the upper part of the back air cavity to form the bottle mouth covering area. B number of heat-sealing lines are arranged longitudinally in the lower part of the back air cavity to form the bottle body covering area. A circular heat-sealing line 270 is provided in the lower part of the back air cavity to form the bottle bottom covering area. The bottle bottom covering area can be folded to close the opening formed between the front film 100 and the back film 200.

[0039] like Figure 3As shown, the left and right sides of the back air cavity are sealed by the back side heat sealing line 280. The upper end of the back side heat sealing line 280 extends to one end connecting to the back arc heat sealing line 230, and the lower end of the back side heat sealing line 280 extends to one end connecting to the ring heat sealing line 270.

[0040] To ensure the bottle top wrapping area fits more closely to the top of the bottled item, such as... Figure 3 As shown, multiple annular heat-sealing lines 231 are arranged at the center of the inner circle of the two back arc heat-sealing lines 230. These annular heat-sealing lines 231 are distributed along the same circumferential direction. Multiple circular heat-sealing lines 232 are arranged in the area between the annular heat-sealing lines 231 and the back arc heat-sealing lines 230. During wrapping, the arrangement of the annular heat-sealing lines 231 and the back arc heat-sealing lines 230 allows the wrapping area at the top of the bottle to fit more closely to the top of the bottled item.

[0041] like Figure 3 As shown, a primary longitudinal heat-sealing line 240 is longitudinally arranged in the upper part of the back air cavity. The primary longitudinal heat-sealing line 240 divides the upper part of the back air cavity into two parallel primary air cavities. In use, the two parallel primary air cavities are tightly wrapped around the bottle mouth of the bottle-shaped item. Three secondary longitudinal heat-sealing lines 250 and two tertiary longitudinal heat-sealing lines 260 are longitudinally arranged in the lower part of the back air cavity. The three secondary longitudinal heat-sealing lines 250 and the two tertiary longitudinal heat-sealing lines 260 are alternately arranged along the width direction. The length of the secondary longitudinal heat-sealing line 250 is less than the length of the tertiary longitudinal heat-sealing line 260. The upper ends of the secondary longitudinal heat-sealing lines 250 and tertiary longitudinal heat-sealing lines 260 are flush, and the lower ends of the tertiary longitudinal heat-sealing lines 260 extend to the lower part of the back air cavity. The entire length of the secondary longitudinal heat seal line 250 on the back and the non-extended section of the tertiary longitudinal heat seal line 260 on the back divide the lower part of the back air chamber into six parallel secondary air chambers. In use, the six parallel secondary air chambers are tightly wrapped around the body of the bottle-shaped item. The extended section of the tertiary longitudinal heat seal line 260 on the back divides the lower part of the back air chamber into three parallel tertiary air chambers. In use, the three parallel tertiary air chambers are tightly wrapped around the bottom side of the bottle-shaped item.

[0042] like Figure 7 and Figure 8 The difference between Embodiment 2 and Embodiment 1 is that:

[0043] like Figure 7As shown, three front top heat seal lines 133 are longitudinally arranged on the upper part of the front air cavity to form the bottle top wrapping area. The lower ends of the left and right front top heat seal lines 133 are connected to the upper ends of the left and right side heat seal lines 180 respectively. The lower end of the middle front top heat seal line 133 is connected to the upper end of the front first-level longitudinal heat seal line 140.

[0044] like Figure 8 As shown, three back top heat seal lines 233 are longitudinally arranged on the upper part of the back air cavity to form the bottle top wrapping area. The lower ends of the left and right back top heat seal lines 233 are connected to the upper ends of the left and right side back heat seal lines 280 respectively. The lower end of the middle back top heat seal line 233 is connected to the upper end of the first-level longitudinal heat seal line 240 on the back. The upper ends of the three back top heat seal lines 233 are connected to the upper ends of the three front top heat seal lines 133 one by one.

[0045] like Figure 8 As shown, three bottom longitudinal heat-sealing lines 271 are arranged vertically at the lower part of the back air cavity to form the bottom wrapping area of ​​the bottle. A bottom transverse heat-sealing line 272 is arranged horizontally at the lower part of the back air cavity. The lower ends of the three bottom longitudinal heat-sealing lines 271 are connected to the bottom transverse heat-sealing line 272 respectively. The upper ends of the left and right bottom longitudinal heat-sealing lines 271 are connected to the lower ends of the left and right side heat-sealing lines 280 on the back side respectively.

[0046] The working principle of this utility model is as follows: When packaging bottle-shaped items, the airbag is first inflated. During inflation, an external inflation device is inserted into the inflation port. Air enters the air inlet channel 190 through the inflation port, then enters the air valve cavity between the two layers of air valve membranes 300 through the air valve inlet, and then enters the front air cavity and the back air cavity. When the air valve cavity is filled with air and inflates, it presses the air valve membrane 300, so that the two layers of air valve membranes 300 are tightly attached, automatically sealing the air valve inlet and preventing gas from leaking out of the membrane air cavity. Bottle-shaped items are placed into an airbag through an opening. The top portion of the airbag is inflated and pressed tightly against the top of the bottle; the mouth portion is inflated and pressed tightly against the mouth of the bottle; the body portion is inflated and pressed tightly against the body and bottom of the bottle; and the bottom portion is inflated and pressed tightly against the bottom of the bottle. The bottom portion can be folded to close the opening. This achieves a tight seal around the bottle, preventing damage during transport and improving product safety.

[0047] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An airbag for inflating bottle-shaped items, comprising a front film (100) and a back film (200) arranged correspondingly at the front and back, wherein the left and right sides of the front film (100) and the left and right sides of the back film (200) are sealed and connected by side heat-sealing lines (500), the top edge of the front film (100) and the top edge of the back film (200) are connected as one piece, forming a packaging space for accommodating bottle-shaped items between the front film (100) and the back film (200), and the bottom edge of the front film (100) and the bottom edge of the back film (200) are separated to form an opening, characterized in that: The front membrane (100) is formed by a front outer membrane (110) and a front inner membrane (120) arranged correspondingly at the front and back, forming a front air cavity. A front bottle top heat-sealing line is provided at the top of the front air cavity to form a bottle top covering area. A number of heat-sealing lines are arranged vertically in the upper part of the front air cavity to form a bottle mouth covering area. B number of heat-sealing lines are arranged vertically in the lower part of the front air cavity to form a bottle body covering area, where B > A, A is a natural number, and B is a positive integer. The back membrane (200) is formed by a back outer membrane (210) and a back inner membrane (220) arranged correspondingly at the front and back. The membrane (220) forms a back air cavity, and the top of the back air cavity is connected to the top of the front air cavity; a back bottle top heat seal line is provided on the upper part of the back air cavity to form a bottle top wrapping area, A heat seal lines are provided longitudinally in the upper part of the back air cavity to form a bottle mouth wrapping area, B heat seal lines are provided longitudinally in the lower part of the back air cavity to form a bottle body wrapping area, and a bottle bottom heat seal line is provided on the lower part of the back air cavity to form a bottle bottom wrapping area. The bottle bottom wrapping area can be folded and closed to seal the opening formed between the front membrane (100) and the back membrane (200).

2. The airbag bag for inflating bottle-shaped items as described in claim 1, characterized in that: The front air chamber is sealed on both sides by a front side heat seal line (180), and the bottom of the front air chamber is sealed by a horizontally arranged air inlet heat seal line (170). The upper end of the front side heat seal line (180) extends to one end connecting to the front bottle top heat seal line, and the lower end of the front side heat seal line (180) extends to one end connecting to the air inlet heat seal line (170).

3. The airbag bag for inflating bottle-shaped items as described in claim 2, characterized in that: The upper part of the front air cavity is provided with a front primary longitudinal heat sealing line (140), and the lower part of the front air cavity is provided with three front secondary longitudinal heat sealing lines (150) and two front tertiary longitudinal heat sealing lines (160). The three front secondary longitudinal heat sealing lines (150) and the two front tertiary longitudinal heat sealing lines (160) are arranged alternately along the width direction. The length of the front secondary longitudinal heat sealing line (150) is smaller than the length of the front tertiary longitudinal heat sealing line (160). The upper end of the front secondary longitudinal heat sealing line (150) is flush with the upper end of the front tertiary longitudinal heat sealing line (160), and the lower end of the front tertiary longitudinal heat sealing line (160) extends all the way to the lower part of the front air cavity.

4. The airbag bag for inflating bottle-shaped items as described in claim 3, characterized in that: The front bottle top heat seal line includes two symmetrical front arc heat seal lines (130). The lower ends of the two front arc heat seal lines (130) and the upper ends of the front side heat seal lines (180) on the left and right sides are connected respectively. Multiple front annular heat seal lines (131) are set at the center of the inner circle of the two front arc heat seal lines (130). The multiple front annular heat seal lines (131) are distributed along the same circumferential direction. Multiple front circular heat seal lines (132) are set in the area between the front annular heat seal line (131) and the front arc heat seal line (130).

5. An airbag for inflating bottle-shaped items as described in claim 3, characterized in that: The front bottle top heat seal line includes three longitudinally arranged front top heat seal lines (133). The lower ends of the left and right front top heat seal lines (133) are connected to the upper ends of the left and right side heat seal lines (180). The lower end of the middle front top heat seal line (133) is connected to the upper end of the front first-level longitudinal heat seal line (140).

6. An airbag for inflating bottle-shaped articles as described in claim 4 or 5, characterized in that: Two valve membranes (300) are disposed between the front outer membrane (110) and the front inner membrane (120). The bottom edges of the two valve membranes (300), the front outer membrane (110), and the front inner membrane (120) are connected as one unit by the air inlet heat sealing line (170). At least one heat-resistant layer (400) is coated between the bottom edges of the two valve membranes (300) by printing. The at least one heat-resistant layer (400) is distributed along the width direction of the valve membrane (300) and spans the air inlet horizontally. The bottom edge of the outer membrane (110) and the bottom edge of the inner membrane (120) are sealed by the bottom edge heat seal line (191) of the horizontally arranged air inlet channel. An air inlet channel (190) is provided between the bottom edge heat seal line (191) of the air inlet channel and the air inlet heat seal line (170). The air inlet channel (190) is connected to the air valve inlet. An inflation opening is provided on one side of the air inlet channel (190), and an air inlet channel side heat seal line (192) is provided on the other side of the air inlet channel (190) for sealing.

7. An airbag for inflating bottle-shaped items as described in claim 6, characterized in that: The back air chamber is sealed on both sides by the back side heat sealing line (280). The upper end of the back side heat sealing line (280) extends to the end of the back bottle top heat sealing line, and the lower end of the back side heat sealing line (280) extends to the end of the ring heat sealing line (270).

8. An airbag for inflating bottle-shaped items as described in claim 7, characterized in that: The upper part of the back air cavity is provided with a primary longitudinal heat sealing line (240), and the lower part of the back air cavity is provided with three secondary longitudinal heat sealing lines (250) and two tertiary longitudinal heat sealing lines (260). The three secondary longitudinal heat sealing lines (250) and the two tertiary longitudinal heat sealing lines (260) are alternately arranged along the width direction. The length of the secondary longitudinal heat sealing line (250) is smaller than the length of the tertiary longitudinal heat sealing line (260). The upper end of the secondary longitudinal heat sealing line (250) and the upper end of the tertiary longitudinal heat sealing line (260) are flush. The lower end of the tertiary longitudinal heat sealing line (260) extends all the way to the lower part of the back air cavity.

9. An airbag for inflating bottle-shaped items as described in claim 8, characterized in that: The back bottle top heat seal line includes two symmetrical back arc heat seal lines (230). The lower ends of the two back arc heat seal lines (230) are connected to the upper ends of the back side heat seal lines (280) on the left and right sides respectively. The upper ends of the two back arc heat seal lines (230) are connected to the upper ends of the two front arc heat seal lines (130) one by one. Multiple back ring heat seal lines (231) are set at the center of the inner circle of the two back arc heat seal lines (230). The multiple back ring heat seal lines (231) are distributed along the same circumferential direction. Multiple back circular heat seal lines (232) are set in the area between the back ring heat seal line (231) and the back arc heat seal line (230). The bottle bottom heat seal line includes a ring heat seal line (270). The two ends of the ring heat seal line (270) are connected to the lower ends of the back side heat seal lines (280) on the left and right sides respectively.

10. An airbag for inflating bottle-shaped items as described in claim 8, characterized in that: The back top heat seal line includes three longitudinally arranged back top heat seal lines (233). The lower ends of the left and right back top heat seal lines (233) are connected to the upper ends of the left and right side heat seal lines (280). The lower end of the middle back top heat seal line (233) is connected to the upper end of the first-level longitudinal heat seal line (240). The upper ends of the three back top heat seal lines (233) are connected to the three... The top heat seal line (133) on the front is connected one by one. The bottom heat seal line includes three vertically arranged bottom heat seal lines (271) and one horizontally arranged bottom heat seal line (272). The lower ends of the three bottom vertical heat seal lines (271) are connected to the bottom horizontal heat seal line (272) respectively. The upper ends of the left and right bottom vertical heat seal lines (271) are connected to the lower ends of the left and right side heat seal lines (280) on the back respectively.

Images