CN212424049U

CN212424049U - Inflatable packaging bag with dual-protection inflatable cavity

Info

Publication number: CN212424049U
Application number: CN202022255418.0U
Authority: CN
Inventors: 戴增贤; 尹海云
Original assignee: Hangzhou Air Box Packaging Co ltd
Current assignee: Zhejiang Air Box New Materials Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-01-29
Anticipated expiration: 2030-10-12

Abstract

The utility model provides an inflatable packaging bag with a double-protection inflatable cavity, which is characterized in that the packaging bag is formed into an upper bag body by a first layer film, a third layer film, a fifth layer film and a seventh layer film, a lower bag body is formed by a second layer film, a fourth layer film, a sixth layer film and an eighth layer film, and the first layer film to the eighth layer film are fixedly connected by a first heat sealing line and a second heat sealing line which are positioned at two sides of the bag body in a heat sealing way; the container is provided with a compact cavity formed by a first layer of film and a second layer of film for placing a transported object, a first inflation cavity formed by the first layer of film to a fourth layer of film and a second inflation cavity formed by the fifth layer of film to an eighth layer of film. Through the double-layer protection of the two inflatable cavities, the phenomena that one inflatable cavity is damaged and air leaks and the transported object loses protection in the object transporting process can be prevented. Through the heat-seal point that sets up one-way inflation valve that quantity can be adjusted, vertical folding line, horizontal folding line and bag body bottom, realized the utility model discloses an inflatable packaging bag convenient and fast, product audience wide range, the high-usage.

Description

Inflatable packaging bag with dual-protection inflatable cavity

Technical Field

The utility model belongs to the technical field of the air packaging bag, concretely relates to inflatable packaging bag with dual protection aerifys chamber.

Background

The air column bag is also called buffer air column bag, air bubble column bag and column-shaped air bag, and is a new-type packaging material filled with natural air in the 21 st century. The packaging material is manufactured by using a laminating or co-extruding mode of LLDPE and NYLON, has the characteristics of tensile resistance and balance, strong flexibility, shaping along with objects and strong protection capability, and is an ideal packaging filler and a liner.

In the prior art, chinese patent 201320363496.X discloses an air bag for protecting fragile articles, chinese patent 201520086434.8 discloses a novel buffer air bag, and chinese patent 201821709803.4 discloses an air bag for automatically closing an air valve, wherein the air bags in the prior art are all an air charging chamber, although the buffer air bag disclosed in chinese patent 201520086434.8 has an outer protection layer for protecting the outer sides of an upper film and a lower film of a bag body, the buffer air bag is only an air charging chamber, and when the buffer air bag is damaged and deflated, the effect of continuously protecting objects is lost; although the air bag disclosed in chinese patent 201821709803.4 has a gas storage layer outside the gas storage cavity, and the gas storage layer is provided with the scratch-proof layer, the gas storage layer is only a very thin layer of gas layer, and it has only played the very little guard action to the gas storage cavity, and the scratch-proof action, whole technical scheme can not play the dual buffer protection effect of strengthening the transported object, also can not play the scratch-proof damage effect of preventing the internal object to the gas storage cavity. Therefore, the inflatable packaging bag with the dual-protection inflatable cavity is urgently needed, the damage effect of the inner object and the outer object to the inflatable packaging bag is prevented, the buffering protection effect on the transported object can be enhanced, the inflatable packaging bag is simple to produce, a single inflatable cavity can be selected when dual inflation protection is not needed, the audience range is wide, and the dual-protection inflatable cavity is diversified in selectivity.

SUMMERY OF THE UTILITY MODEL

To the above defect, the utility model provides a can selectively individual layer aerify chamber protection or dual inflation chamber protection, realize preventing that can also continue the buffer protection after the external object oppresses, punctures and prevent that the inside transport object that the inside object parcel bumped on the way and causes from destroying the dual protection who loses the protection of aerifing the chamber and aerifing the gas packaging bag in chamber to the individual layer aerifys the chamber.

The utility model provides a following technical scheme: an inflatable packaging bag with a double-protection inflatable cavity is characterized in that a bag body is formed by a first layer film, a third layer film, a fifth layer film and a seventh layer film, the first layer film, the third layer film, the fifth layer film and the seventh layer film form an upper layer bag body, a lower layer bag body is formed by a second layer film, a fourth layer film, a sixth layer film and an eighth layer film, and the first layer film, the fourth layer film, the sixth layer film and the eighth layer film are fixedly connected through heat sealing by a first heat sealing line and a second heat sealing line which are positioned on two sides of the bag body;

the first layer of film and the second layer of film are innermost layer films which are mutually attached and superposed to form a compact cavity; the third layer of film and the fourth layer of film are middle layer films, and a first inflation cavity is formed between the middle layer films and the innermost layer films; the fifth layer of film and the sixth layer of film form a tight wrapping layer, the tight wrapping layer tightly wraps the first inflation cavity, the fifth layer of film is tightly attached to the third layer of film, and the sixth layer of film is tightly attached to the fourth layer of film; the seventh layer of film and the eighth layer of film are outermost films, and a second inflation cavity is formed between the outermost films and the tight wrapping layer;

the first inflation cavity is provided with a plurality of first one-way air inlet valves on the upper layer or the lower layer of the bag body, and first inflation cavity heat sealing lines are arranged on the opposite sides of the first one-way air inlet valves;

the second inflatable cavity is provided with a plurality of second one-way air inlet valves on the upper layer or the lower layer of the bag body, and a second inflatable cavity heat sealing line is arranged on one side, opposite to the second one-way air inlet valves, of the plurality of second one-way air inlet valves.

Furthermore, a plurality of vertical folding lines along the direction of the object entering the bag body and a transverse folding line positioned at the lower part of the bag body are arranged between the first layer of film and the second layer of film.

Further, the number of the vertical folding lines is at least 2.

The bag body is characterized in that the first film and the second film are formed by folding a first film, the third film and the fourth film are formed by folding a second film, and the first film and the second film are fixed and folded at the bottom of the bag body through heat sealing by a plurality of first heat sealing points which are transversely arranged in parallel; the first film is a first film, and the second film is a second film.

Further, the fifth film and the sixth film are formed by folding a third film, the seventh film and the eighth film are formed by folding a fourth film, and the third film and the fourth film are fixedly folded by heat sealing; the third film is a third film, and the fourth film is a fourth film.

Further, the third film and the fourth film are heat-seal fixed and folded with the first film and the second film through the plurality of first heat-seal points.

Further, the third film and the fourth film are fixedly folded by heat sealing with a plurality of second heat sealing points which are transversely juxtaposed.

Further, the first heat sealing point and the second heat sealing point are both positioned on the folding turning line at the bottom of the bag body; or the first heat seal point is located above the fold hinge while the second heat seal point is located on the fold hinge.

Further, the number of the first heat sealing points is the same as the number of the second heat sealing points, or the number of the first heat sealing points is less than the number of the second heat sealing points.

Furthermore, the first one-way air inlet valve and the second one-way air inlet valve are both positioned on the upper layer of the bag body; or the first one-way air inlet valve and the second one-way air inlet valve are both positioned at the lower layer of the bag body; or the first one-way air inlet valve is positioned at the upper layer of the bag body and the second one-way air inlet valve is positioned at the lower layer of the bag body; or the first one-way air inlet valve is positioned at the lower layer of the bag body and the second one-way air inlet valve is positioned at the upper layer of the bag body.

The utility model has the advantages that:

1. a compact cavity formed by the first layer of film and the second layer of film for placing the transported object, a first inflation cavity formed by the first layer of film to the fourth layer of film and a second inflation cavity formed by the fifth layer of film to the eighth layer of film. Through the double-layer protection of the first inflation cavity and the second inflation cavity, the phenomenon that a certain inflation cavity is damaged and air leakage causes the loss of protection of a transported object in the object transportation process can be prevented; realized the protection to the dual inflation chamber of the object of transporting, when receiving external pressure or sharp-pointed object impact, even outermost second inflation chamber is punctured still has first inflation chamber and cushions the protection to the object, can increase the buffer capacity to external pressure with the help of inside and outside two inflation chambers of coincide simultaneously, it causes the condition that the object is pressed to be out of shape to take place to have reduced too big pressure, the object is arranged in closely the intracavity, if meet under the condition of violent jolt in the transportation process, also prevented to lead to the object to shake the condition of smashing and take place owing to by inseparable or the buffer capacity undersize of parcel.

2. The length of the first layer film to the fourth layer film for manufacturing the first inflatable cavity can be smaller than the length of the fifth layer film to the eighth layer film for manufacturing the second inflatable cavity, so that the length of the first inflatable cavity can be smaller than the length of the second inflatable cavity, the first inflatable cavity wrapped with the compact cavity of the transported object can be wrapped by the second inflatable cavity again, the surrounding double-layer inflation protection of the transported object is further realized, the object is prevented from being compressed, deformed, damaged and cracked by the outside world in an omnibearing three-dimensional mode, meanwhile, the damage of the transported object caused by the fact that the object is not tightly wrapped by the compact cavity in the transportation process to the first inflatable cavity is also prevented, the transported object is further protected by the second inflatable cavity after the first inflatable cavity leaks air, and the safety protection coefficient of the transported object is increased.

3. Through aerifing chamber and second and aerifing the chamber and set up first one-way inflation valve and the one-way inflation valve of second alone respectively, can realize aerifing when two aerify the chamber for when inflating speed and production rate, also can select to aerify a certain chamber alone, if when not needing dual inflation chamber protection, only aerify the chamber to the one deck and also can use, convenient and fast, product audience wide range, the high-usage. The quantity of first one-way admission valve and the one-way admission valve of second can be unanimous, also can be inconsistent, adjusts according to the horizontal length of the bag body, can set up a plurality of one-way admission valves of different interval intervals for the gas filling speed.

4. Through setting up two at least vertical folding lines and horizontal folding line between first rete and the second rete, can further reduce the position that the object was placed, can formulate the position of vertical folding line and horizontal folding line to the object that transports, and then inject the accommodation space of the object that transports, with the inseparable chamber of the object of formation easily parcel transport more, prevent that the object from moving everywhere along with jolting of transporting in inseparable intracavity, and then remove to marginal heat seal line department after, can be because inside object is to the rupture that the top of first inflation chamber and second inflation chamber hits and cause, guaranteed that the object of transporting is under the buffer protection of double-deck inflation chamber always in the transportation process.

5. By arranging the heat sealing points, the first film and the second film which correspond to the upper layer and the lower layer of the first inflation cavity can be formed by folding one film, the third film and the fourth film which correspond to the upper layer and the lower layer are formed by folding one film, and the first inflation cavity is formed by heat sealing and fixing at the heat sealing points; or the first film and the second film which form the first inflation cavity are respectively formed by fixing two films through heat-seal lines and then fixing the two films with the other two single films, namely the whole formed by heat-sealing and fixing the third film and the fourth film or the third film and the fourth film formed by one folded film, through heat-seal points and fixing the third film and the fourth film together with the first film and the second film, so that the first inflation cavity is formed. One method can be selected for manufacturing the second inflation cavity, the manufacturing means is various, corner waste can be effectively utilized, and the production cost is saved.

Drawings

The present invention will be described in more detail hereinafter based on embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 is a schematic top sectional view of an uninflated state of an inflatable packaging bag with a dual protection inflation cavity according to the present invention;

fig. 2 is a schematic top view of the inflatable packaging bag with the dual protection inflatable chamber according to the present invention;

fig. 3 is a schematic bottom view of the inflatable packaging bag with the dual-protection inflatable cavity provided by the present invention in an inflated state;

fig. 4 is a schematic sectional view taken along line a-a of fig. 3 illustrating an inflated state of the inflatable packaging bag with a dual protection inflation cavity according to embodiment 1 of the present invention;

fig. 5 is a schematic front view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 1 of the present invention;

fig. 6 is a schematic back view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 1 of the present invention;

fig. 7 is a schematic sectional view taken along line a-a of an inflatable packaging bag with a dual protection inflatable chamber according to embodiment 2 of the present invention in an inflated state;

fig. 8 is a schematic front view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 2 of the present invention;

fig. 9 is a schematic back view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 2 of the present invention;

fig. 10 is a schematic sectional view taken along line a-a of an inflatable packaging bag with a dual protection inflatable chamber according to embodiment 3 of the present invention in an inflated state;

fig. 11 is a schematic front view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 3 of the present invention;

fig. 12 is a schematic back view of an inflatable packaging bag with a dual protection inflatable chamber provided in embodiment 3 of the present invention.

Detailed description of the preferred embodiments

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1-6, for the air-filled packing bag with a dual-protection air-filled cavity provided by this embodiment, as shown in fig. 1 and 5, the packing bag is formed into a bag body 101 by a first layer film 1-1 to an eighth layer film 4-2, the first layer film 1-1, a third layer film 2-1, a fifth layer film 3-1 and a seventh layer film 4-1 form an upper layer bag body, the second layer film 1-2, a fourth layer film 2-2, a sixth layer film 3-2 and the eighth layer film 4-2 form a lower layer bag body, and the first layer film to the eighth layer film are fixedly connected by a first heat-sealing line 102 and a second heat-sealing line 103 which are located at two layers of the bag body;

as shown in fig. 2 and fig. 3, the first layer film 1-1 and the second layer film 1-2 are the innermost layer films which are mutually attached and overlapped to form a compact cavity 1, and an object to be transported and protected is placed in the compact cavity 1 during transportation; the third layer of film 2-1 and the fourth layer of film 2-2 are middle layer of films, form the first inflatable chamber 2 with the innermost layer of films; the fifth film 3-1 and the sixth film 3-2 form a tight wrapping layer 3, and the tight wrapping layer 3 tightly wraps the first inflation cavity 2;

the seventh layer of film 4-1 and the eighth layer of film 4-2 are the outermost layers of films, and a second inflation cavity 4 is formed between the outermost layer of film and the tight wrapping layer 3;

the fifth layer of film 3-1 is closely attached to the third layer of film 2-1, the sixth layer of film 3-2 is closely attached to the fourth layer of film 2-2, the third layer of film 2-1, the fourth layer of film 2-2, the fifth layer of film 3-1 and the sixth layer of film 3-2 can be prepared from a self-adhesive film material responsive to pressure sensitive stimulation, and further can respond to inflation and deflation pressure sensitive, so that the self adhesive force is changed, auxiliary means such as external adhesives are not needed, the fifth layer of film 3-1 is closely attached to the third layer of film 2-1, and the sixth layer of film 3-2 is closely attached to the fourth layer of film 2-2; meanwhile, the fifth layer of film 3-1 and the third layer of film 2-1, and the sixth layer of film 3-2 and the fourth layer of film 2-2 can be fixedly connected by back adhesive adhesion and heat seal breakpoint pressing, thereby realizing the internal and external superposition between the first inflation cavity 2 and the second inflation cavity 4, realizing the protection of the double inflation cavities of the transported object, when being impacted by the external pressure or a sharp object, even if the outermost second inflation chamber 4 is punctured, the first inflation chamber 2 can also be used for buffering and protecting objects, meanwhile, the buffer capacity to the external pressure is increased by means of the two air-filled cavities which are overlapped inside and outside, the situation that the object is pressed and deformed due to the overlarge pressure is reduced, the object is placed in the compact cavity 1, and in case of severe jolt during transportation, the object is prevented from being shattered due to the fact that the object is not tightly wrapped or the buffering capacity is too small.

As shown in fig. 4 and 5, the first inflation cavity 2 is provided with 1 first one-way air intake valve 2-3 on the upper layer of the bag body 101, as shown in fig. 6, a first inflation cavity heat sealing line 2-4 is provided on the opposite side of the 1 first one-way air intake valve 2-3, i.e. the lower layer of the bag body 101, so that the first film 1-1, the second film 1-2, the third film 2-1 and the fourth film 2-2 form a closed cavity, and the first inflation cavity 2 is formed after the first one-way air intake valve 2-3 is inflated; the upper part of the first one-way air inlet valve 2-3 is provided with a plurality of first air inlet guide channels 2-31;

as shown in fig. 4 and 5, the second inflation cavity 4 is provided with 1 second one-way air intake valve 4-3 on the upper layer of the bag body 101, as shown in fig. 6, a first inflation cavity heat seal line 4-4 is provided on the opposite side of the 1 second one-way air intake valve 4-3, namely, the lower layer of the bag body 101, so that the fifth layer film 3-1, the sixth layer film 3-2, the seventh layer film 4-1 and the eighth layer film 4-2 form a closed cavity, and the second inflation cavity 4 is formed after the second one-way air intake valve 4-3 is inflated; the upper part of the second one-way intake valve 4-3 is provided with a plurality of second intake port guide passages 4-31. The first one-way air intake valve 2-3 and the second one-way air intake valve 4-3 can also be located at the lower layer of the bag body 101.

The number of the first one-way air inlet valves 2-3 and the second one-way air inlet valves 4-3 can be adjusted according to the transverse length of the bag body, and a plurality of one-way air inlet valves with different intervals can be arranged to accelerate the air inflation speed. The number of first unidirectional intake valves 2-3 and second unidirectional intake valves 4-3 may or may not be uniform.

The bag comprises a bag body, and is characterized in that a first film 1-1 and a second film 1-2 are formed by folding a first film, a third film 2-1 and a fourth film 2-2 are formed by folding a second film, the first film is a first film, the second film is a second film, and the first film and the second film are fixed and folded at the bottom of the bag body through heat sealing by a plurality of first heat sealing points 5 which are transversely arranged in parallel. The fifth film 3-1 and the sixth film 3-2 are formed by folding the third film, the seventh film 4-1 and the eighth film 4-2 are formed by folding the fourth film, the third film is the third film, and the fourth film is the fourth film, as shown in fig. 3 and 5-6, the third film and the fourth film, the first film and the second film are heat-sealed and fixed and folded by 2 first heat-sealing points 5 transversely juxtaposed at the bottom of the bag body 101.

In addition, the first layer film 1-1, the second layer film 1-2, the third layer film 2-1, the fourth layer film 2-2, the fifth layer film 3-1, the sixth layer film 3-2, the seventh layer film 4-1 and the eighth layer film 4-2 can also be respectively a single film, and eight films are fixed in the first heat sealing point 5 through heat sealing together. Or when the first film 1-1 and the second film 1-2 are the first film, the third film 2-1 and the fourth film 2-2 are the second film, the fifth film 3-1 to the eighth film 4-2 are respectively a single film, and six films are heat-sealed at the first heat-sealing point 5 together; or under the condition that the first layer of film 1-1 to the fourth layer of film 2-2 are respectively independent films, the fifth layer of film 3-1 and the sixth layer of film 3-2 are the third film, the seventh layer of film 4-1 and the eighth layer of film 4-2 are the fourth film, and the six films are heat-sealed at the first heat-sealing point 5 together. Under the three conditions, the position of the first heat sealing point 5 is removed, and every two corresponding combined films are fixed by using a heat sealing line corresponding to the bottom folding turning line 7 to form a plurality of turning lines, for example, under the first condition, the first film 1-1 and the second film 1-2 are fixedly connected through the first turning line, the third film 2-1 and the fourth film 2-2 are fixedly connected through the second turning line, the fifth film 3-1 and the sixth film 3-2 are fixedly connected through the third turning line, and the seventh film 4-1 and the eighth film 4-2 are fixedly connected through the fourth turning line.

The length and the width of the first layer film 1-1 to the fourth layer film 2-2 can be respectively consistent with the length and the width of the fifth layer film 3-1 to the eighth layer film 4-2, or respectively smaller than the length and the width of the fifth layer film 3-1 to the eighth layer film 4-2, or only the length of the former is smaller than the latter, so that the height of the first inflation cavity 2 is consistent with the height of the second inflation cavity 4, or smaller than the second inflation cavity 4 and then wrapped by the second inflation cavity 4, and a stronger buffer protection effect is realized.

The heat-seal fixation through the first heat-seal point 5 can enable the first inflation cavity 2 and the second inflation cavity 3 to be fixedly connected with each other except the self-adhesive film of the pressure-sensitive stimulation response, further fixedly connected with each other, so that the transported object is fixed in the compact cavity 1, the transported object is protected by double buffering, and the phenomenon that only one layer of buffering air column bag loses buffering protection after being crushed is prevented.

Example 2

As shown in fig. 1 and 7-9, for the air-filled packing bag with a dual-protection air-filled cavity provided in this embodiment, the packing bag is formed by a first layer film 1-1 to an eighth layer film 4-2 to form a bag body 101, the first layer film 1-1, a third layer film 2-1, a fifth layer film 3-1 and a seventh layer film 4-1 to form an upper layer bag body, the second layer film 1-2, the fourth layer film 2-2, a sixth layer film 3-2 and the eighth layer film 4-2 to form a lower layer bag body, and the first layer film to the eighth layer film are fixedly connected by a first heat-sealing line 102 and a second heat-sealing line 103 which are located at two layers of the bag body;

the first layer film 1-1 and the second layer film 1-2 are the innermost layer films which are mutually attached and superposed to form a compact cavity 1; the third layer of film 2-1 and the fourth layer of film 2-2 are middle layer of films, form the first inflatable chamber 2 between the innermost layer of film and the middle layer of films; the fifth layer of film 3-1 and the sixth layer of film 3-2 form a tight wrapping layer 3, the tight wrapping layer 3 tightly wraps the first inflation cavity 2, the fifth layer of film 3-1 is tightly attached to the third layer of film 2-1, and the sixth layer of film 3-2 is tightly attached to the fourth layer of film 2-2; the seventh layer of film 4-1 and the eighth layer of film 4-2 are the outermost layers of films, and a second inflation cavity 4 is formed between the outermost layer of film and the tight wrapping layer 3;

the difference between this embodiment and embodiment 1 is that, as shown in fig. 7 and 9, the first inflation cavity 2 is provided with 3 first one-way air intake valves 2-3 at the lower layer of the bag body 101, and as shown in fig. 8, a first inflation cavity heat-seal line 2-4 is provided at the opposite side of the 3 first one-way air intake valves 2-3, i.e. the upper layer of the bag body 101;

as shown in fig. 7 and 8, the second inflation cavity 4 is provided with 2 second one-way air intake valves 4-3 on the upper layer of the bag body 101, and as shown in fig. 9, a first inflation cavity heat-sealing line 4-4 is provided on the side opposite to the 2 second one-way air intake valves 4-3, i.e. the lower layer of the bag body 101.

A plurality of 2 vertical folding lines 1-3 along the direction of an object entering the bag body and a transverse folding line 1-4 positioned at the lower part of the bag body are arranged between the first layer film 1-1 and the second layer film 1-2 to form a compact cavity 1 which is easier to wrap the transported object, the object is prevented from moving around along with the jolt of transportation in the compact cavity formed by the first layer film 1-1 and the second layer film 1-2 and further moving to the edge

heat sealing lines

102 and 103, the object can be broken due to the collision of the internal object to the first inflation cavity 2 and the second inflation cavity 4, and the transported object is ensured to be always under the buffer protection of the double-layer inflation cavity in the transportation process.

The number of the vertical folding lines 1-3 can be selected and set according to the number of transported objects and the required space of the interval package, and the objects to be transported can be placed in a cavity formed in a bag body formed by the vertical folding lines 1-3 arranged at intervals and the heat sealing line 102 or the heat sealing line 103, so that the inflatable packaging bag with the double inflatable cavities can transport a plurality of objects. The number of the transverse folding lines 1-4 can also be selected and set according to the condition of the transported object, and then a plurality of transverse folding lines and vertical folding lines and the

heat sealing lines

102 and 103 on two sides form a plurality of closed air-filled packaging cavities which are wrapped by the first air-filled cavity 2 and the second air-filled cavity 4, so that the packaging space of the transported object which can be contained by one air-filled packaging bag is further expanded.

The first film 1-1 to the eighth film 4-2 are heat-sealed and fixed and folded by 4 first heat-sealing points 5 which are transversely arranged at the bottom of the bag body. The first to eighth films 1-1 to 4-2 and the corresponding other film are folded and heat sealed at the folding hinge 7 through the first heat sealing point 5 or the folding hinge 7 at the bottom of the bag body by the two separate films, which is described in detail in embodiment 1.

Example 3

As shown in fig. 1-2, for the inflatable packaging bag with dual protection inflation cavities provided in this embodiment, the packaging bag is formed by a first layer film 1-1 to an eighth layer film 4-2 to form a bag body 101, the first layer film 1-1, a third layer film 2-1, a fifth layer film 3-1 and a seventh layer film 4-1 to form an upper layer bag body, the second layer film 1-2, a fourth layer film 2-2, a sixth layer film 3-2 and the eighth layer film 4-2 to form a lower layer bag body, and the first layer film to the eighth layer film are fixedly connected by a first heat seal line 102 and a second heat seal line 103 which are located at two layers of the bag body;

the difference between this embodiment and embodiment 1-2 is that the first inflation cavity 2 is provided with 5 first one-way air intake valves 2-3 on the upper layer of the bag body 101, and a first inflation cavity heat-seal line 2-4 on the side opposite to the 5 first one-way air intake valves 2-3, that is, the lower layer of the bag body 101;

the lower layer of the bag body 101 of the second air charging cavity 4 is provided with 2 second one-way air inlet valves 4-3, and one side of the second air charging cavity 4-3 opposite to the 2 second one-way air inlet valves is provided with a first air charging cavity heat sealing line 4-4.

A plurality of 2 vertical folding lines 1-3 along the direction of the object entering the bag body and a transverse folding line 1-4 positioned at the lower part of the bag body are arranged between the first layer film 1-1 and the second layer film 1-2.

As shown in fig. 10, the first film 1-1, the second film 1-2, the third film 2-1 and the fourth film 2-2 are heat sealed and fixed by 3 first heat sealing points 5 which are transversely arranged in parallel and located above the folding turning line 7 at the bottom of the bag body, so as to form a first inflation cavity 2; the fifth layer of film 3-1, the sixth layer of film 3-2, the seventh layer of film 4-1 and the eighth layer of film 4-1 are fixed by heat sealing through 6 second heat sealing points 6 on a folding turning line 7 at the bottom of the bag body, so as to form a second inflation cavity 4; as shown in fig. 11-12, the width of the first plenum 2 in this embodiment is the same as the width of the second plenum 4, but the length is less than the length of the second plenum, so that the first plenum 2 is completely enclosed within the second plenum 4, further preventing the lack of plenum protection of objects that are wrapped and transported too heavy due to the gravity force damaging the first plenum 2 when placed vertically, which would otherwise occur if only one layer of plenums were present. And the quantity of the first heat-seal points 5 is less than that of the second heat-seal points 6, so that the bottom of the second inflatable cavity 4 at the outermost layer has larger supporting force, and the transverse arrangement density of the second heat-seal points 6 is large, thereby further preventing the object from breaking the second inflatable cavity 4 again after breaking the first inflatable cavity 2. The number of first heat-seal points 5 and the number of second heat-seal points 6 can also be chosen to be the same according to the condition of the transported object and the required degree of tight support.

The first to eighth films 1-1 to 4-2 and the corresponding other film are folded and heat sealed at the folding hinge 7 through the first heat sealing point 5 or the folding hinge 7 at the bottom of the bag body by the two separate films, which is described in detail in embodiment 1.

It should be noted that the descriptions in this application as referring to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Next, all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present application are only used to explain the relative position relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly, and the connection may be a direct connection or an indirect connection.

While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims

1. The inflatable packaging bag with the double-protection inflatable cavity is characterized in that a bag body (101) is formed by a first layer film (1-1) to an eighth layer film (4-2) of the packaging bag, an upper layer bag body is formed by the first layer film (1-1), the third layer film (2-1), the fifth layer film (3-1) and the seventh layer film (4-1), a lower layer bag body is formed by the second layer film (1-2), the fourth layer film (2-2), the sixth layer film (3-2) and the eighth layer film (4-2), and the first layer film to the eighth layer film are fixedly connected through a first heat sealing line (102) and a second heat sealing line (103) which are positioned on two sides of the bag body in a heat sealing mode;

the first layer of film (1-1) and the second layer of film (1-2) are the innermost layer of film and are mutually attached and superposed to form a compact cavity (1); the third layer of film (2-1) and the fourth layer of film (2-2) are middle layer films, and a first inflation cavity (2) is formed between the middle layer films and the innermost layer film; the fifth layer of film (3-1) and the sixth layer of film (3-2) form a tightly wrapped layer (3), the tightly wrapped layer (3) tightly wraps the first inflation cavity (2), the fifth layer of film (3-1) is tightly attached to the third layer of film (2-1), and the sixth layer of film (3-2) is tightly attached to the fourth layer of film (2-2); the seventh layer film (4-1) and the eighth layer film (4-2) are outermost layer films, and a second inflation cavity (4) is formed between the outermost layer film and the tight wrapping layer (3);

the first inflatable cavity (2) is provided with a plurality of first one-way air inlet valves (2-3) on the upper layer or the lower layer of the bag body (101), and a first inflatable cavity heat sealing line (2-4) is arranged on one side opposite to the first one-way air inlet valves (2-3);

the second inflatable cavity (4) is provided with a plurality of second one-way air inlet valves (4-3) on the upper layer or the lower layer of the bag body (101), and a second inflatable cavity heat sealing line (4-4) is arranged on one side, opposite to the second one-way air inlet valves (4-3), of the plurality of second one-way air inlet valves.

2. The inflatable packaging bag with the double protection inflatable chamber as claimed in claim 1, wherein a plurality of vertical folding lines (1-3) along the direction of the object entering the bag body and a plurality of transverse folding lines (1-4) at the lower part of the bag body are arranged between the first layer film (1-1) and the second layer film (1-2).

3. The inflatable packaging bag with a double protection inflatable chamber as claimed in claim 2, wherein the number of the vertical folding lines (1-3) is at least 2.

4. The inflatable packaging bag with the double protection inflatable cavity is characterized in that the first film (1-1) and the second film (1-2) are formed by folding a first film, the third film (2-1) and the fourth film (2-2) are formed by folding a second film, and the first film and the second film are fixedly folded at the bottom of the bag body through heat sealing by a plurality of first heat sealing points (5) which are transversely arranged in parallel.

5. The inflatable packaging bag with the double protection inflatable chamber as claimed in claim 4, wherein the fifth film (3-1) and the sixth film (3-2) are formed by folding a third film, the seventh film (4-1) and the eighth film (4-2) are formed by folding a fourth film, and the third film and the fourth film are fixedly folded by heat sealing.

6. The inflatable packaging bag with a double protection inflatable chamber as claimed in claim 5, wherein the third film and the fourth film are heat sealed and fixed to the first film and the second film through the plurality of first heat sealing points (5).

7. An inflatable packaging bag with a double protection inflatable chamber as claimed in claim 5, characterized in that the third film and the fourth film are heat sealed and folded by a plurality of second heat sealing points (6) which are arranged in parallel in the transverse direction.

8. The inflatable packaging bag with the double protection inflatable chamber as claimed in claim 7, wherein the first heat sealing point (5) and the second heat sealing point (6) are both located on the folding break line (7) at the bottom of the bag body; or the first heat sealing point (5) is located above the folding break (7) while the second heat sealing point (6) is located on the folding break (7).

9. The inflatable packaging bag with a double protection inflation cavity of claim 8, wherein the number of the first heat-seal points (5) is the same as the number of the second heat-seal points (6), or the number of the first heat-seal points (5) is less than the number of the second heat-seal points (6).

10. The inflatable packaging bag with a double protection inflation cavity as claimed in claim 1, wherein the first one-way air intake valve (2-3) and the second one-way air intake valve (4-3) are both located on the upper layer of the bag body (101); or the first one-way air inlet valve (2-3) and the second one-way air inlet valve (4-3) are both positioned at the lower layer of the bag body (101); or the first one-way air inlet valve (2-3) is positioned at the upper layer of the bag body (101) and the second one-way air inlet valve (4-3) is positioned at the lower layer of the bag body (101); or the first one-way air inlet valve (2-3) is positioned at the lower layer of the bag body (101) and the second one-way air inlet valve (4-3) is positioned at the upper layer of the bag body (101).