Air bag for sleeving bottle-shaped object up and down after inflation

Abstract

The utility model relates to the technical field of air column bags, in particular to an air bag for sleeving a bottle-shaped object up and down after being inflated. The head air bag comprises a head air bag body and a tail air bag body, the head air bag body comprises a head front face film body and a head back face film body which are correspondingly arranged front and back, the head front face film body forms a head front face air cavity through a head front face outer film and a head front face inner film, and the head back face film body forms a head back face air cavity through a head back face outer film and a head back face inner film; and the head front air cavity and the head back air cavity are communicated with each other. The air bag is divided into the head air bag body and the tail air bag body which are sleeved and wrapped from the head and the tail of a bottled article respectively, and use convenience is improved; different wrapping areas are formed on the surface of the film body through the heat sealing lines and tightly attached to and wrap the bottle top, the bottle opening, the bottle body and the bottle bottom of a bottled article respectively, so that damage to the bottled article caused by shaking in the transportation process is avoided, and the safety of product transportation is improved.

Description

Technical Field

[0001] This utility model relates to the field of air column bag technology, and in particular to an airbag bag for inflating bottle-shaped items and fitting them together. 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 and then fitting them together. This airbag can form different wrapping areas that tightly wrap different parts of the bottled item, thereby preventing damage to the bottled item caused by shaking during transportation and improving the safety of product transportation. At the same time, the airbag is divided into a head airbag and a tail airbag, which wrap the bottled item from the head and tail respectively, improving the convenience of use.

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

[0006] An airbag for inflating bottle-shaped items and fitting them together, comprising a head airbag and a tail airbag. The head airbag includes a front head membrane and a back head membrane arranged correspondingly at the front and back. The left and right sides of the front head membrane and the left and right sides of the back head membrane are sealed together by a heat-sealing line. A head wrapping opening is formed between the bottom edges of the front head membrane and the back head membrane, and a packaging space for accommodating the head of the bottle-shaped item is formed between the front head membrane and the back head membrane. The front head membrane is formed by an outer front head membrane and an inner front head membrane. The front air cavity of the head has two symmetrical arc-shaped heat-sealing lines forming a bottle top covering area at its upper part, and A heat-sealing lines forming a bottle mouth covering area at its lower part, where A is a positive integer. The back membrane of the head consists of an outer back membrane and an inner back membrane forming a back air cavity. The front air cavity and the back air cavity are interconnected. The back air cavity of the head has two symmetrical arc-shaped heat-sealing lines forming a bottle top covering area at its upper part, and A heat-sealing lines forming a bottle mouth covering area at its lower part.

[0007] The tail airbag includes a front tail membrane and a back tail membrane arranged correspondingly at the front and back. The left and right sides of the front tail membrane and the left and right sides of the back tail membrane are sealed together by a tail side heat-sealing line. A tail wrapping opening is formed between the top edge of the front tail membrane and the top edge of the back tail membrane, and a packaging space for accommodating the tail of a bottle-shaped item is formed between the front tail membrane and the back tail membrane. The front tail membrane is formed by the outer front tail membrane and the inner front tail membrane to create a front tail air chamber. The upper part of the front air cavity has B heat-sealing lines arranged longitudinally to form a bottle body wrapping area, where B is a positive integer. The lower part of the rear front air cavity has multiple front bottom arc heat-sealing lines to form a bottle bottom wrapping area. The rear back membrane is formed by the rear back outer membrane and the rear back inner membrane to form the rear back air cavity, which is connected to the rear front air cavity. The upper part of the rear back air cavity has B heat-sealing lines arranged longitudinally to form a bottle body wrapping area, and the lower part of the rear back air cavity has multiple back bottom arc heat-sealing lines to form a bottle bottom wrapping area.

[0008] Furthermore, the left and right sides of the front air chamber of the head are sealed by the front side heat sealing line, and the bottom of the front air chamber of the head is sealed by the horizontally set front heat sealing line. The upper end of the front side heat sealing line is connected to the front top arc heat sealing line, and the lower end of the front side heat sealing line is connected to the front horizontal heat sealing line.

[0009] Furthermore, multiple annular heat-sealing lines are set at the center of the inner circle of the two front top arc heat-sealing lines. These annular heat-sealing lines are distributed along the same circumferential direction. Multiple circular heat-sealing lines are set in the area between the front top arc heat-sealing line and the front annular heat-sealing line. Several primary longitudinal heat-sealing lines and several secondary longitudinal heat-sealing lines are set longitudinally at the lower part of the front air cavity. The number of primary longitudinal heat-sealing lines is less than the number of secondary longitudinal heat-sealing lines. The length of the primary longitudinal heat-sealing lines is greater than the length of the secondary longitudinal heat-sealing lines. The upper end of the primary longitudinal heat-sealing lines extends to the position of the front top arc heat-sealing line. The lower ends of the primary and secondary longitudinal heat-sealing lines extend to the front transverse heat-sealing line.

[0010] Furthermore, the left and right sides of the air chamber on the back of the head are sealed by the heat sealing line on the back side, the upper end of the heat sealing line on the back side is connected to the arc heat sealing line on the top of the back, and the lower part of the air chamber on the back of the head is sealed by the heat sealing line of the air inlet of the head.

[0011] Furthermore, multiple annular heat seals are provided at the center of the inner circle of the two back top arc heat seals. These multiple annular heat seals are distributed along the same circumferential direction. Multiple circular heat seals are provided in the area between the back annular heat seal and the back top arc heat seal. Several primary longitudinal heat seals and several secondary longitudinal heat seals are provided longitudinally at the lower part of the back air cavity of the head. The number of primary longitudinal heat seals is less than the number of secondary longitudinal heat seals. The length of the primary longitudinal heat seal is greater than the length of the secondary longitudinal heat seal. The upper end of the primary longitudinal heat seal extends to the back top arc heat seal position, and the lower ends of the primary and secondary longitudinal heat seals extend to the head air inlet heat seal.

[0012] Furthermore, two head valve membranes are provided between the lower part of the outer membrane on the back of the head and the lower part of the inner membrane on the back of the head. The bottom edges of the two head valve membranes, the outer membrane on the back of the head, and the inner membrane on the back of the head are sealed together by a horizontally arranged head air inlet heat sealing line. At least one head heat-resistant layer is coated between the bottom edges of the two head valve membranes by printing. The at least one head heat-resistant layer is distributed along the width direction of the head valve membrane. The head heat-resistant layer spans the head air inlet heat sealing line vertically. The bottom edges of the outer membrane on the back of the head and the bottom edges of the inner membrane on the back of the head are sealed together by a horizontally arranged head air inlet channel heat sealing line. The head air inlet channel is formed between the head air inlet channel heat sealing line and the head air inlet heat sealing line. One end of the head air inlet channel is an air inlet, and the other end of the head air inlet channel is sealed by a vertically arranged head air inlet channel side heat sealing line.

[0013] Furthermore, the top edge of the front air chamber at the rear is sealed by a transverse heat-sealing line at the rear front, and the left and right sides of the front air chamber at the rear are sealed by side heat-sealing lines at the rear front. The upper end of the side heat-sealing line at the rear front is connected to the transverse heat-sealing line at the rear front, and the lower end of the side heat-sealing line at the rear front is connected to the arc-shaped heat-sealing line at the bottom of the front.

[0014] Furthermore, several frontal third-level longitudinal heat sealing lines and several frontal fourth-level longitudinal heat sealing lines are longitudinally arranged on the upper part of the front air cavity at the rear. The frontal third-level longitudinal heat sealing lines and the frontal fourth-level longitudinal heat sealing lines are distributed alternately. The length of the frontal fourth-level longitudinal heat sealing line is greater than that of the frontal third-level longitudinal heat sealing line. The upper ends of the frontal third-level longitudinal heat sealing lines and the upper ends of the frontal fourth-level longitudinal heat sealing lines extend to the frontal transverse heat sealing line at the rear. The lower end of the frontal fourth-level longitudinal heat sealing line extends to the frontal bottom arc heat sealing line.

[0015] Furthermore, the upper part of the rear air chamber is sealed by a horizontally arranged rear air inlet heat sealing line. The left and right sides of the rear air chamber are sealed by rear side heat sealing lines. The lower end of the rear side heat sealing line is connected to the bottom arc heat sealing line. The upper end of the rear side heat sealing line is connected to the rear air inlet heat sealing line. Several rear third-level longitudinal heat sealing lines and several rear fourth-level longitudinal heat sealing lines are arranged longitudinally on the upper part of the rear air chamber. The rear third-level and rear fourth-level longitudinal heat sealing lines are alternately distributed. The length of the rear fourth-level longitudinal heat sealing line is greater than that of the rear third-level longitudinal heat sealing line. The upper end of the rear fourth-level longitudinal heat sealing line and the upper end of the rear third-level longitudinal heat sealing line extend to the rear air inlet heat sealing line. The lower end of the rear fourth-level longitudinal heat sealing line extends to the bottom arc heat sealing line.

[0016] Furthermore, two tail valve membranes are provided between the upper part of the outer membrane on the back of the tail and the upper part of the inner membrane on the back of the tail. The top edges of the two tail valve membranes, the outer membrane on the back of the tail, and the inner membrane on the back of the tail are sealed together by a horizontally arranged tail air inlet heat sealing line. At least one tail heat-resistant layer is coated between the top edges of the two tail valve membranes by printing. The at least one tail heat-resistant layer is distributed along the width direction of the tail valve membrane. The tail heat-resistant layer spans the tail air inlet heat sealing line horizontally. The top edges of the outer membrane on the back of the tail and the top edges of the inner membrane on the back of the tail are sealed together by a horizontally arranged tail air inlet channel heat sealing line. A tail air inlet channel is formed between the tail air inlet channel heat sealing line and the tail air inlet heat sealing line. One end of the tail air inlet channel is an air inlet, and the other end of the tail air inlet channel is sealed by a vertically arranged tail air inlet channel side heat sealing line.

[0017] The beneficial effects of this utility model are as follows:

[0018] This utility model consists of a head airbag and a tail airbag, which are respectively wrapped around the head and tail of the bottled item, improving ease of use. The utility model has heat-sealed lines forming different wrapping areas on the surface of the film, which are tightly wrapped around the top, mouth, body and bottom of the bottled item, thereby avoiding damage to the bottled item caused by shaking during transportation and improving the safety of product transportation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a front view of the head airbag structure of this utility model.

[0021] Figure 3 This is a structural diagram of the back of the head airbag of this utility model.

[0022] Figure 4 This is a front view of the tail airbag structure of this utility model.

[0023] Figure 5 This is a structural diagram of the back of the tail airbag of this utility model.

[0024] Figure 6 This is a schematic diagram of the cross-section of the head front membrane of this utility model.

[0025] Figure 7 This is a schematic diagram of the cross-section of the membrane on the back of the head of this utility model.

[0026] Figure 8 This is a schematic diagram of the cross-section of the head valve diaphragm of this utility model.

[0027] Figure 9 This is a schematic diagram of the cross-section of the frontal membrane at the tail of this utility model.

[0028] Figure 10 This is a schematic diagram of the cross-section of the tail back membrane of this utility model.

[0029] Figure 11 This is a schematic diagram of the cross-section of the tail valve diaphragm of this utility model.

[0030] Among them: 100, head airbag; 110, front head membrane; 111, front top arc heat seal line; 112, front primary longitudinal heat seal line; 113, front secondary longitudinal heat seal line; 114, front annular heat seal line; 115, front circular heat seal line; 116, front side heat seal line; 117, front transverse heat seal line; 120, back head membrane; 121, back top arc heat seal line; 122, back primary longitudinal heat seal line; 1 23. Secondary longitudinal heat seal line on the back; 124. Circular heat seal line on the back; 125. Circular heat seal line on the back; 126. Side heat seal line on the back; 130. Outer membrane on the front of the head; 140. Inner membrane on the front of the head; 150. Outer membrane on the back of the head; 160. Inner membrane on the back of the head; 170. Side heat seal line on the head; 180. Air valve membrane on the head; 181. Air inlet channel on the head; 182. Heat seal line on the air inlet of the head; 183. Heat seal line on the air inlet channel of the head; 18 4. Head air intake side heat seal line; 190. Head heat-resistant layer; 200. Tail airbag; 210. Tail front membrane; 211. Front three-stage longitudinal heat seal line; 212. Front four-stage longitudinal heat seal line; 213. Front bottom arc heat seal line; 214. Tail front side heat seal line; 215. Tail front transverse heat seal line; 220. Tail back membrane; 221. Back three-stage longitudinal heat seal line; 222. Back four-stage longitudinal heat seal line; 22 3. Bottom arc heat seal line on the back; 224. Side heat seal line on the back of the tail; 230. Outer membrane on the front of the tail; 240. Inner membrane on the front of the tail; 250. Outer membrane on the back of the tail; 260. Inner membrane on the back of the tail; 270. Side heat seal line on the tail; 280. Tail valve membrane; 281. Tail air intake channel; 282. Heat seal line on the tail air intake port; 283. Heat seal line on the tail air intake channel; 284. Side heat seal line on the tail air intake channel; 290. Tail heat-resistant layer. Detailed Implementation

[0031] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0032] like Figure 1 As shown, an airbag for inflating bottle-shaped items and then fitting together includes a head airbag 100 and a tail airbag 200. The head airbag 100 and the tail airbag 200 are arranged and used in pairs. When packaging bottle-shaped items, the head airbag 100 is fitted around the head of the bottle-shaped item, and the tail airbag 200 is fitted around the tail of the bottle-shaped item.

[0033] like Figure 1 , Figure 2 and Figure 3As shown, the head airbag 100 includes a front head membrane 110 and a back head membrane 120 arranged correspondingly at the front and back. The left and right sides of the front head membrane 110 and the left and right sides of the back head membrane 120 are sealed together by a head side heat-sealing line 170. A head wrapping opening is formed between the bottom edge of the front head membrane 110 and the bottom edge of the back head membrane 120, and a packaging space for accommodating the head of a bottle-shaped item is formed between the front head membrane 110 and the back head membrane 120.

[0034] like Figure 6 As shown, the frontal membrane 110 of the head is formed by the frontal outer membrane 130 and the frontal inner membrane 140 to form the frontal air cavity of the head.

[0035] like Figure 2 As shown, two symmetrical arc-shaped heat-sealing lines 111 are provided on the upper part of the front air cavity of the head to form the top covering area of ​​the bottle. A heat-sealing lines of number A are provided on the lower part of the front air cavity of the head to form the mouth covering area. A is a positive integer.

[0036] like Figure 2 As shown, the left and right sides of the front air chamber of the head are sealed by L-shaped front side heat sealing lines 116, and the bottom of the front air chamber is sealed by a horizontally arranged front transverse heat sealing line 117. The upper end of the front side heat sealing line 116 is connected to the front top arc heat sealing line 111, and the lower end of the front side heat sealing line 116 is connected to the front transverse heat sealing line 117.

[0037] 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 114 are positioned at the center of the inner circle of the two front top arc heat-sealing lines 111. These annular heat-sealing lines 114 are distributed along the same circumferential direction. Multiple circular heat-sealing lines 115 are positioned in the area between the front top arc heat-sealing lines 111 and the annular heat-sealing lines 114. During wrapping, the annular heat-sealing lines 114 and the circular heat-sealing lines 115 ensure that the wrapping area around the bottle top fits more closely to the top of the bottled item.

[0038] like Figure 2As shown, a primary longitudinal heat-sealing line 112 and two secondary longitudinal heat-sealing lines 113 are longitudinally arranged at the lower part of the front air cavity of the head. The length of the primary longitudinal heat-sealing line 112 is greater than the length of the secondary longitudinal heat-sealing lines 113. The number of primary longitudinal heat-sealing lines 112 is less than the number of secondary longitudinal heat-sealing lines 113. The number of air cavities formed at the positions of the secondary longitudinal heat-sealing lines 113 is greater than the number of air cavities formed at the positions of the primary longitudinal heat-sealing lines 112, allowing the front air cavity of the head to fit more closely to the bottle opening of the bottled item. The upper end of the primary longitudinal heat-sealing line 112 extends to the position of the front top arc heat-sealing line 111, and the lower ends of the primary longitudinal heat-sealing line 112 and the lower ends of the secondary longitudinal heat-sealing lines 113 extend to the front transverse heat-sealing line 117.

[0039] like Figure 7 As shown, the dorsal membrane 120 of the head is formed by the dorsal outer membrane 150 and the dorsal inner membrane 160 to create a dorsal air cavity, and the frontal air cavity and the dorsal air cavity are interconnected. The top edge of the dorsal outer membrane 150 and the top edge of the frontal outer membrane 130 are connected as one piece, and the top edge of the dorsal inner membrane 160 and the top edge of the frontal inner membrane 140 are connected as one piece.

[0040] like Figure 3 As shown, two symmetrical arc-shaped heat-sealing lines 121 are set on the upper part of the air cavity on the back of the head to form the bottle top wrapping area, and A heat-sealing lines are set vertically on the lower part of the air cavity on the back of the head to form the bottle mouth wrapping area.

[0041] like Figure 3 As shown, the left and right sides of the air chamber on the back of the head are sealed by L-shaped heat-sealing lines 126 on the back side, and the upper end of the heat-sealing line 126 on the back side is connected to the arc-shaped heat-sealing line 121 on the top of the back. The lower part of the air chamber on the back of the head is sealed by the heat-sealing line 182 of the head air inlet.

[0042] 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 124 are positioned at the center of the inner circle of the two back-top arc heat-sealing lines 121. These annular heat-sealing lines 124 are distributed along the same circumferential direction. Multiple circular heat-sealing lines 125 are positioned in the area between the annular heat-sealing lines 124 and the back-top arc heat-sealing lines 121. During wrapping, the annular heat-sealing lines 124 and the circular heat-sealing lines 125 ensure that the wrapping area around the bottle top fits more closely to the top of the bottled item.

[0043] like Figure 3As shown, a primary longitudinal heat-sealing line 122 and two secondary longitudinal heat-sealing lines 123 are longitudinally arranged at the lower part of the air cavity on the back of the head. The length of the primary longitudinal heat-sealing line 122 is greater than the length of the secondary longitudinal heat-sealing lines 123. The number of primary longitudinal heat-sealing lines 122 is less than the number of secondary longitudinal heat-sealing lines 123. The number of air cavities formed at the positions of the secondary longitudinal heat-sealing lines 123 is greater than the number of air cavities formed at the positions of the primary longitudinal heat-sealing lines 122, allowing the air cavity on the back of the head to fit more closely to the bottle opening of the bottled item. The upper end of the primary longitudinal heat-sealing line 122 extends to the position of the arc-shaped heat-sealing line 121 at the top of the back, and the lower ends of the primary longitudinal heat-sealing line 122 and the lower ends of the secondary longitudinal heat-sealing lines 123 extend to the air inlet heat-sealing line 182 of the head.

[0044] like Figure 3 and Figure 8 As shown, two head valve membranes 180 are disposed between the lower part of the outer membrane 150 and the lower part of the inner membrane 160 on the back of the head. The bottom edges of the two head valve membranes 180, the outer membrane 150, and the inner membrane 160 are sealed together as one unit by a horizontally arranged head air inlet heat-sealing line 182. At least one head heat-resistant layer 190 is coated between the bottom edges of the two head valve membranes 180 by printing. The at least one head heat-resistant layer 190 is distributed along the width direction of the head valve membrane 180. The head heat-resistant layer 190 spans the head air inlet heat-sealing line 182 vertically. The head heat-resistant layer 190 is coated before the head air inlet heat-sealing line 182 is heat-sealed. The head heat-resistant layer 190 is not heat-sealed together during the heat-sealing process, thus forming the head air valve inlet.

[0045] like Figure 3 As shown, the bottom edge of the outer membrane 150 on the back of the head and the bottom edge of the inner membrane 160 on the back of the head are sealed together by a horizontally arranged heat-sealing line 183 for the head air intake channel. The heat-sealing line 183 for the head air intake channel and the heat-sealing line 182 for the head air inlet form a head air intake channel 181. One end of the head air intake channel 181 is an air inlet, and the other end of the head air intake channel 181 is sealed by a vertically arranged heat-sealing line 184 for the head air intake channel side. The head air intake channel 181 is connected to the head air valve air inlet for air intake.

[0046] When inflating the head airbag 100, an external inflation device is inserted into the inflation port for inflation. Air enters the head air intake channel 181 through the inflation port, then enters the valve chamber between the two head valve membranes 180 through the head valve inlet, then enters the air chamber on the back of the head, and finally enters the air chamber on the front of the head. When the air chamber is full and inflated, it compresses the head valve membrane 180, causing the two head valve membranes 180 to fit tightly together, automatically sealing the head valve inlet and preventing gas leakage from the membrane air chamber.

[0047] like Figure 1 , Figure 4 and Figure 5 As shown, the tail airbag 200 includes a front tail film 210 and a back tail film 220 arranged correspondingly at the front and back. The left and right sides of the front tail film 210 and the left and right sides of the back tail film 220 are sealed together by a tail side heat-sealing line 270. A tail wrapping opening is formed between the top edge of the front tail film 210 and the top edge of the back tail film 220, and a packaging space for accommodating the tail of a bottle-shaped item is formed between the front tail film 210 and the back tail film 220.

[0048] like Figure 9 As shown, the tail front membrane 210 is formed by the tail front outer membrane 230 and the tail front inner membrane 240 to form the tail front air cavity.

[0049] like Figure 4 As shown, the upper part of the front air cavity at the tail end has B longitudinally arranged heat-sealing lines to form a bottle-wrapping area, where B is a positive integer. The lower part of the front air cavity at the tail end has multiple segments of front bottom arc heat-sealing lines 213 to form a bottle bottom wrapping area. The top edge of the front air cavity at the tail end is sealed and connected by a transversely arranged front heat-sealing line 215.

[0050] like Figure 4 As shown, three frontal third-level longitudinal heat-sealing lines 211 and two frontal fourth-level longitudinal heat-sealing lines 212 are longitudinally arranged on the upper part of the frontal air cavity. The three frontal third-level longitudinal heat-sealing lines 211 and the two frontal fourth-level longitudinal heat-sealing lines 212 are alternately distributed. The length of the frontal fourth-level longitudinal heat-sealing line 212 is greater than the length of the frontal third-level longitudinal heat-sealing line 211. The upper ends of the frontal third-level longitudinal heat-sealing lines 211 and the upper ends of the frontal fourth-level longitudinal heat-sealing lines 212 extend to the rearal frontal transverse heat-sealing line 215, and the lower end of the frontal fourth-level longitudinal heat-sealing line 212 extends to the frontal bottom arc heat-sealing line 213.

[0051] like Figure 4 As shown, the left and right sides of the front air chamber at the tail are sealed by the side heat sealing line 214 at the tail. The upper end of the side heat sealing line 214 at the tail is connected to the transverse heat sealing line 215 at the tail. The lower end of the side heat sealing line 214 at the tail is connected to the bottom arc heat sealing line 213 at the front.

[0052] like Figure 10 As shown, the tail-back membrane 220 is formed by the tail-back outer membrane 250 and the tail-back inner membrane 260 to create a tail-back air chamber. The bottom edge of the tail-back outer membrane 250 is connected to the bottom edge of the tail-front outer membrane 230, and the bottom edge of the tail-back inner membrane 260 is connected to the bottom edge of the tail-front inner membrane 240. The tail-back air chamber and the tail-front air chamber are connected.

[0053] like Figure 5 As shown, the upper part of the rear air chamber is sealed by a horizontally arranged tail air inlet heat sealing line 282. The upper part of the rear air chamber has B vertically arranged heat sealing lines to form a bottle body wrapping area, and the lower part of the rear air chamber has multiple sections of bottom arc heat sealing lines 223 to form a bottle bottom wrapping area.

[0054] like Figure 5 As shown, the left and right sides of the rear air chamber are sealed by the rear side heat sealing line 224. The lower end of the rear side heat sealing line 224 is connected to the bottom arc heat sealing line 223, and the upper end of the rear side heat sealing line 224 is connected to the rear air inlet heat sealing line 282.

[0055] like Figure 5 As shown, three third-level longitudinal heat-sealing lines 221 and two fourth-level longitudinal heat-sealing lines 222 are longitudinally arranged on the upper part of the rear air chamber. The three third-level longitudinal heat-sealing lines 221 and the two fourth-level longitudinal heat-sealing lines 222 are alternately distributed. The length of the fourth-level longitudinal heat-sealing line 222 is greater than that of the third-level longitudinal heat-sealing line 221. The upper ends of the fourth-level longitudinal heat-sealing line 222 and the upper ends of the third-level longitudinal heat-sealing line 221 extend to the rear air inlet heat-sealing line 282, and the lower end of the fourth-level longitudinal heat-sealing line 222 extends to the bottom arc heat-sealing line 223.

[0056] like Figure 11 As shown, two tail valve membranes 280 are disposed between the upper part of the outer tail valve membrane 250 and the upper part of the inner tail valve membrane 260. The top edges of the two tail valve membranes 280, the outer tail valve membrane 250, and the inner tail valve membrane 260 are sealed together as one unit by a transversely arranged tail air inlet heat sealing line 282. At least one tail heat-resistant layer 290 is coated between the top edges of the two tail valve membranes 280 by printing. The at least one tail heat-resistant layer 290 is distributed along the width direction of the tail valve membrane 280. The tail heat-resistant layer 290 spans the tail air inlet heat sealing line 282 vertically. The tail heat-resistant layer 290 is coated before the tail air inlet heat sealing line 282 is heat-sealed. The tail heat-resistant layer 290 is not heat-sealed together during the heat sealing process, thus forming the tail valve air inlet.

[0057] like Figure 5 As shown, the top edge of the outer membrane 250 on the back of the tail and the top edge of the inner membrane 260 on the back of the tail are sealed together by a horizontally arranged tail air intake channel heat sealing line 283. The tail air intake channel heat sealing line 283 and the tail air inlet heat sealing line 282 form a tail air intake channel 281. One end of the tail air intake channel 281 is an air inlet, and the other end of the tail air intake channel 281 is sealed by a vertically arranged tail air intake channel side heat sealing line 284. The tail air intake channel 281 is connected to the tail air valve air inlet for air intake.

[0058] When inflating the tail airbag 200, an external inflation device is inserted into the inflation port. Air enters the tail air intake channel 281 through the inflation port, then enters the valve chamber between the two tail valve membranes 280 through the tail valve inlet, then enters the tail rear air chamber, and finally enters the tail front air chamber. When the air chamber is full and inflated, it compresses the tail valve membrane 280, causing the two tail valve membranes 280 to fit tightly together, automatically sealing the tail valve inlet and preventing gas leakage from the membrane air chamber.

[0059] The working principle of this invention is as follows: When packaging bottle-shaped items, the head airbag and the tail airbag are inflated separately. Inflation is performed through an external inflation device inserted into the inflation port. After inflation, the head airbag 100 is fitted onto the head of the bottle-shaped item, and the tail airbag 200 is fitted onto the tail. The air chambers of the head airbag 100 (bottle top area) and the mouth area are tightly fitted against the bottle mouth. The air chambers of the tail airbag 200 (bottle body area) and the bottom area are tightly fitted against the bottle bottom. This achieves tight packaging of the bottle-shaped item, preventing damage caused by shaking during transportation and improving product transport safety.

[0060] 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 and then fitting together, comprising a head airbag (100) and a tail airbag (200), characterized in that: The head airbag (100) includes a front head membrane (110) and a back head membrane (120) arranged correspondingly at the front and back. The left and right sides of the front head membrane (110) and the left and right sides of the back head membrane (120) are sealed together by a heat-sealing line (170) on the side of the head. A head wrapping opening is formed between the bottom edge of the front head membrane (110) and the bottom edge of the back head membrane (120). A packaging space for accommodating the head of a bottle-shaped item is formed between the front head membrane (110) and the back head membrane (120). The front head membrane (110) consists of a front head outer membrane (130) and a front head inner membrane (140). A front air cavity is formed, and two symmetrical arc-shaped heat-sealing lines (111) are provided on the upper part of the front air cavity to form a bottle top covering area. A number of heat-sealing lines (A) are provided vertically on the lower part of the front air cavity to form a bottle mouth covering area, where A is a positive integer. The back membrane (120) is formed by the back membrane (150) and the back membrane (160) to form a back air cavity. The front air cavity and the back air cavity are interconnected. Two symmetrical arc-shaped heat-sealing lines (121) are provided on the upper part of the back air cavity to form a bottle top covering area. A number of heat-sealing lines (A) are provided vertically on the lower part of the back air cavity to form a bottle mouth covering area. The tail airbag (200) includes a front tail film (210) and a back tail film (220) arranged correspondingly at the front and back. The left and right sides of the front tail film (210) and the left and right sides of the back tail film (220) are sealed together by a tail side heat-sealing line (270). A tail wrapping opening is formed between the top edge of the front tail film (210) and the top edge of the back tail film (220). A packaging space for accommodating the tail of a bottle-shaped item is formed between the front tail film (210) and the back tail film (220). The front tail film (210) consists of a front tail outer film (230) and a front tail inner film (220). The membrane (240) forms a front air cavity at the tail end. The upper part of the front air cavity at the tail end is provided with B heat-sealing lines in a longitudinal direction to form a bottle body wrapping area, where B is a positive integer. The lower part of the front air cavity at the tail end is provided with multiple front bottom arc heat-sealing lines (213) to form a bottle bottom wrapping area. The back membrane (220) at the tail end is formed by the back back outer membrane (250) and the back back inner membrane (260) at the tail end to form a back air cavity at the tail end. The back air cavity at the tail end is connected to the front air cavity at the tail end. The upper part of the back air cavity at the tail end is provided with B heat-sealing lines in a longitudinal direction to form a bottle body wrapping area. The lower part of the back air cavity at the tail end is provided with multiple back bottom arc heat-sealing lines (223) to form a bottle bottom wrapping area.

2. The airbag bag for inflating bottle-shaped items and fitting them together as described in claim 1, characterized in that: The front air chamber of the head is sealed on both sides by a front side heat sealing line (116), and the bottom of the front air chamber is sealed by a horizontal front heat sealing line (117). The upper end of the front side heat sealing line (116) is connected to the front top arc heat sealing line (111), and the lower end of the front side heat sealing line (116) is connected to the front horizontal heat sealing line (117).

3. The airbag bag for inflating bottle-shaped items and then fitting together, as described in claim 2, is characterized in that: Multiple frontal annular heat-sealing lines (114) are arranged at the center of the inner circle of the two frontal top arc heat-sealing lines (111). The multiple frontal annular heat-sealing lines (114) are distributed along the same circumferential direction. Multiple frontal circular heat-sealing lines (115) are arranged in the area between the frontal top arc heat-sealing line (111) and the frontal annular heat-sealing line (114). Several frontal primary longitudinal heat-sealing lines (112) and several frontal secondary longitudinal heat-sealing lines (113) are arranged longitudinally at the lower part of the frontal air cavity of the head. The number of longitudinal heat seal lines (112) is less than the number of secondary longitudinal heat seal lines (113) on the front. The length of the primary longitudinal heat seal line (112) on the front is greater than the length of the secondary longitudinal heat seal line (113) on the front. The upper end of the primary longitudinal heat seal line (112) on the front extends to the position of the top arc heat seal line (111) on the front. The lower end of the primary longitudinal heat seal line (112) on the front and the lower end of the secondary longitudinal heat seal line (113) on the front extend to the transverse heat seal line (117) on the front.

4. The airbag bag for inflating bottle-shaped items and then fitting together, as described in claim 1, is characterized in that: The air chamber on the back of the head is sealed on both sides by a heat-sealing line (126) on the back side. The upper end of the heat-sealing line (126) on the back side is connected to the arc heat-sealing line (121) on the top of the back side. The lower part of the air chamber on the back of the head is sealed by a heat-sealing line (182) on the head air inlet.

5. The airbag bag for inflating bottle-shaped items and fitting them together as described in claim 4, characterized in that: Multiple back annular heat seal lines (124) are provided at the center of the inner circle of the two back top arc heat seal lines (121). The multiple back annular heat seal lines (124) are distributed along the same circumferential direction. Multiple back circular heat seal lines (125) are provided in the area between the back annular heat seal lines (124) and the back top arc heat seal lines (121). Several back primary longitudinal heat seal lines (122) and several back secondary longitudinal heat seal lines (123) are provided longitudinally at the lower part of the back air cavity of the head. The number of heat seal lines (122) is less than the number of secondary longitudinal heat seal lines (123) on the back. The length of the primary longitudinal heat seal line (122) on the back is greater than the length of the secondary longitudinal heat seal line (123) on the back. The upper end of the primary longitudinal heat seal line (122) on the back extends to the position of the top arc heat seal line (121) on the back. The lower ends of the primary longitudinal heat seal line (122) on the back and the lower ends of the secondary longitudinal heat seal line (123) on the back extend to the head air inlet heat seal line (182).

6. The airbag bag for inflating bottle-shaped items and fitting them together as described in claim 5, characterized in that: Two head valve membranes (180) are disposed between the lower part of the outer membrane (150) and the lower part of the inner membrane (160) on the back of the head. The bottom edges of the two head valve membranes (180), the outer membrane (150) and the inner membrane (160) on the back of the head are sealed together by a horizontally arranged head air inlet heat sealing line (182). At least one head heat-resistant layer (190) is coated between the bottom edges of the two head valve membranes (180) by printing. The at least one head heat-resistant layer (190) is distributed along the width direction of the head valve membrane (180). The head heat-resistant layer (190) spans the head air inlet heat seal line (182) horizontally. The bottom edge of the head back outer membrane (150) and the bottom edge of the head back inner membrane (160) are sealed and connected by the head air inlet channel heat seal line (183) set horizontally. The head air inlet channel heat seal line (183) and the head air inlet heat seal line (182) form the head air inlet channel (181). One end of the head air inlet channel (181) is an air inlet, and the other end of the head air inlet channel (181) is sealed by the head air inlet channel side heat seal line (184) set vertically.

7. The airbag bag for inflating bottle-shaped items and fitting them together as described in claim 1, characterized in that: The top edge of the front air chamber at the tail is sealed by a transverse heat-sealing line (215) at the front of the tail. The left and right sides of the front air chamber at the tail are sealed by side heat-sealing lines (214) at the front of the tail. The upper end of the side heat-sealing line (214) at the front of the tail is connected to the transverse heat-sealing line (215) at the front of the tail. The lower end of the side heat-sealing line (214) at the front of the tail is connected to the arc heat-sealing line (213) at the bottom of the front.

8. The airbag bag for inflating bottle-shaped items and fitting together, as described in claim 7, is characterized in that: The upper part of the front air cavity at the tail end is provided with several front three-level longitudinal heat sealing lines (211) and several front four-level longitudinal heat sealing lines (212). The front three-level longitudinal heat sealing lines (211) and the front four-level longitudinal heat sealing lines (212) are distributed alternately. The length of the front four-level longitudinal heat sealing line (212) is greater than the length of the front three-level longitudinal heat sealing line (211). The upper ends of the front three-level longitudinal heat sealing line (211) and the upper ends of the front four-level longitudinal heat sealing line (212) extend to the front transverse heat sealing line (215) at the tail end. The lower end of the front four-level longitudinal heat sealing line (212) extends to the front bottom arc heat sealing line (213).

9. An airbag bag for inflating bottle-shaped items and fitting them together, as described in claim 1, characterized in that: The upper part of the rear air chamber is sealed by a horizontally arranged rear air inlet heat sealing line (282). The left and right sides of the rear air chamber are sealed by rear side heat sealing lines (224). The lower end of the rear side heat sealing line (224) is connected to the rear bottom arc heat sealing line (223), and the upper end of the rear side heat sealing line (224) is connected to the rear air inlet heat sealing line (282). The upper part of the rear air chamber is longitudinally arranged with several rear third-level longitudinal heat sealing lines (221) and several rear fourth-level longitudinal heat sealing lines (221). The heat seal line (222), the three-level longitudinal heat seal line (221) on the back and the four-level longitudinal heat seal line (222) on the back are alternately distributed. The length of the four-level longitudinal heat seal line (222) on the back is greater than the length of the three-level longitudinal heat seal line (221) on the back. The upper end of the four-level longitudinal heat seal line (222) on the back and the upper end of the three-level longitudinal heat seal line (221) on the back extend to the tail air inlet heat seal line (282). The lower end of the four-level longitudinal heat seal line (222) on the back extends to the bottom arc heat seal line (223).

10. An airbag bag for inflating bottle-shaped items and fitting them together, as described in claim 9, characterized in that: Two tail valve membranes (280) are disposed between the upper part of the outer tail back membrane (250) and the upper part of the inner tail back membrane (260). The top edges of the two tail valve membranes (280), the outer tail back membrane (250), and the inner tail back membrane (260) are sealed together by a horizontally arranged tail air inlet heat sealing line (282). At least one tail heat-resistant layer (290) is coated between the top edges of the two tail valve membranes (280) by printing. The at least one tail heat-resistant layer (290) is distributed along the width direction of the tail valve membrane (280). The tail heat-resistant layer (290) spans the tail air inlet heat seal line (282) horizontally. The top edge of the tail back outer membrane (250) and the top edge of the tail back inner membrane (260) are sealed and connected by the tail air inlet channel heat seal line (283) set horizontally. The tail air inlet channel heat seal line (283) and the tail air inlet heat seal line (282) form a tail air inlet channel (281). One end of the tail air inlet channel (281) is an air inlet, and the other end of the tail air inlet channel (281) is sealed by a tail air inlet channel side heat seal line (284).

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