A preparation process for air column bags without inflation points

Abstract

The present application discloses a process for preparing an air column bag without an inflation point, and relates to the technical field of air column bag preparation. The air column bag prepared by the process disclosed in the present application includes: a film bag, which is formed by folding a single-layer film in half and sealing the edges with a heat-sealing strip; a plurality of strip air columns, which are constructed on the film bag through a partition array of heat-sealing strips; and connecting air holes, which are used to connect two adjacent strip air columns, one of which is set at the edge of the film bag and is connected to the outside world. The present application fills the strip air columns of the film bag with rebound cotton columns, and uses connecting air holes to connect multiple strip air columns together. When the sealing tube is opened, the elasticity of the rebound cotton columns can be used to automatically expand, so that external gas is drawn into the strip air columns. It can be inflated autonomously without setting an inflation point, and can prevent the situation where it cannot be used after being damaged to a certain extent, thereby increasing functionality.

Description

Technical Field

[0001] The present application relates to the technical field of air column bag preparation, and in particular to a process for preparing an air column bag without an inflation point. Background Art

[0002] Air bags, also known as cushioning air bags, are a new type of packaging system filled with natural air and widely used for product packaging and transportation. Air bags are characterized by a single inflation, completely filling the entire row. Each air column exists independently, and if damaged, only the corresponding air column fails, leaving the others unaffected. While existing air bags vary widely in type, their overall structures are relatively similar. They quickly deflate upon contact with sharp objects, losing their protective cushioning effect. To enhance the protective capabilities of air bags, the present invention proposes a process for preparing air bags without inflation points. Summary of the Invention

[0003] The purpose of this application is to solve the problems in the above-mentioned background technology and provide a preparation process for air column bags without inflation points.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] A process for preparing an air column bag without an inflation point, wherein the air column bag prepared by the process comprises:

[0006] A film bag, wherein the film bag is formed by folding a single layer of film in half and sealing the edges with a heat seal strip;

[0007] There are multiple strip-shaped air columns and they are constructed on the film bag through a separation array of heat-sealing strips;

[0008] A communication air hole is used to connect two adjacent strip-shaped air columns, wherein one of the communication air holes is arranged at the edge of the membrane bag and is connected to the outside world;

[0009] A sealing pipe strip connected to the communicating air holes at the edge and used to seal the communicating air holes;

[0010] Rebound cotton columns are filled in multiple strip-shaped air columns;

[0011] The process includes the following steps:

[0012] S1: Loading: The film is pushed by the rotating support of multiple rollers to move to the folding device;

[0013] S2: Filling cotton columns: Push multiple rebound cotton columns into the film from the side opening of the folded film in sequence;

[0014] S3: Inserting mold rods: inserting multiple partition mold rod arrays into the film filled with rebound cotton columns;

[0015] S4: Heat sealing: The folded and filled film is fed into a heat sealing mold. The multiple rebound cotton columns in the film are separated by the pressure of the heat sealing mold, and the separation mold rod is positioned and resisted. Then, heat sealing is performed and the temperature is maintained between 160℃ and 180℃ to form multiple heat sealing strips, strip-shaped air columns and connecting air holes.

[0016] S5: Pull out the mold rod: Pull out the partition mold rod from the communicating air hole on the edge of the film bag;

[0017] S6: Pressing and exhausting: The heat-sealed film bag is passed through the upper and lower pressing rollers to exhaust the gas inside the film bag and squeeze the rebound cotton column into a flat shape;

[0018] S7: Connection and sealing: attach the sealing tube strip to the flat film bag and heat-press the sealing tube strip to connect it by heat sealing machine;

[0019] S8: Cutting: The heat sealing strips on the film bags are positioned and cut to make the cut film bags have the same size. After passing the inspection, they are packaged and put into storage.

[0020] Furthermore, the connecting air hole is L-shaped and includes a horizontal hole and a vertical hole. One end of the horizontal hole is connected to the vertical hole, and the vertical hole as a whole covers the end of the horizontal hole. The other ends of the horizontal hole and the vertical hole are respectively connected to two strip-shaped air columns.

[0021] Furthermore, the rebound cotton column is made of polyester fiber and is cylindrical in shape as a whole.

[0022] Furthermore, the partitioning mold rod is made of metal and has a smooth arc surface, and a plurality of arc corners for forming the communicating air holes are constructed in the middle of the partitioning mold rod.

[0023] Furthermore, the device for filling the resilient cotton column is arranged at the bottom end of the folding device, and the resilient cotton column is inserted therein when the film is not completely adhered after being folded in half.

[0024] Furthermore, a groove for wrapping the rebound cotton column is provided on the heat sealing mold.

[0025] Furthermore, after the film bag passes through the upper pressing roller and the lower pressing roller, the film bag is kept in a compressed state through a flat channel, and the connection and sealing process is carried out in the compressed state.

[0026] Furthermore, in the compressed state, the residual gas inside the film bag can be extracted by an air pump.

[0027] The beneficial effects of the present application are as follows: the present application fills the strip air column of the film bag with a rebound cotton column, and uses connecting air holes to connect multiple strip air columns together. When the sealing tube is opened, the elasticity of the rebound cotton column can be used to automatically expand, so that the external gas is drawn into the strip air column. It can be inflated automatically without setting an inflation point, and can prevent the situation of being unusable after damage to a certain extent, thereby increasing functionality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a three-dimensional structural diagram of the air column bag of this application;

[0029] Figure 2 This application Figure 1 Half-section view of the three-dimensional structure;

[0030] Figure 3 This application Figure 2 Enlarged view of point A in the middle;

[0031] Figure 4 This is a three-dimensional structural diagram of the rebound cotton column of this application;

[0032] Figure 5 This is a three-dimensional structural diagram of the separation mold rod of this application.

[0033] Figure numerals: 1, film bag; 2, strip air column; 3, connecting air hole; 301, horizontal hole; 302, vertical hole; 4, sealing tube strip; 5, rebound cotton column; 6, separation mold rod; 601, arc corner. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0035] like Figure 1-Figure 5 As shown, an embodiment of the present application proposes a process for preparing an air column bag without an inflation point, and the air column bag prepared by the process includes:

[0036] Film bag 1, film bag 1 is made of a single layer of film folded in half and sealed at the edges by heat sealing strips. The edges of the film bag 1 are all provided with 0.5 cm wide heat sealing strips, which can increase the sealing security of the film bag 1;

[0037] There are multiple strip-shaped air columns 2, which are constructed on the film bag 1 through a separation array of heat-sealing strips. Different numbers of strip-shaped air columns 2 can be set according to needs to increase flexibility;

[0038] The communicating air holes 3 are used to connect two adjacent strip-shaped air columns 2, wherein one communicating air hole 3 is provided at the edge of the film bag 1 and is connected to the outside world. The communicating air holes 3 are used to connect multiple strip-shaped air columns 2 to each other, and the inflation operation is performed through the communicating air holes 3 connected to the outside world;

[0039] The sealing tube strip 4 is connected to the communicating air hole 3 on the edge and is used to close the communicating air hole 3. The sealing tube strip 4 adopts a fully sealed protruding structure. When the film bag 1 needs to be inflated, the sealing tube strip 4 can be cut open to facilitate the inflation operation;

[0040] The elastic cotton columns 5 are filled in the plurality of strip-shaped air columns 2. By filling the strip-shaped air columns 2 with the elastic cotton columns 5, the elastic force of the elastic cotton columns 5 can be used to independently expand the strip-shaped air columns 2, and the external gas can be drawn into the strip-shaped air columns 2 through the connecting air holes 3. The strip-shaped air columns 2 can be expanded without setting an inflation point, and the local buffering protection capability can still be achieved when the film bag 1 is slightly broken, thereby increasing the functionality of the structure;

[0041] The process includes the following steps:

[0042] S1: Loading: The film is pushed by the rotating support of multiple rollers to move it to the folder. The loading equipment and the folder are both existing equipment. The continuous movement of the rollers can gradually transfer the film and pass it through the folder. When passing through the folder, it will bend at the sharp corners of the triangle and gradually fold and fit after leaving the folder. An extrusion shaft needs to be set behind the folder to shape the folded film.

[0043] S2: Filling with cotton columns: Push multiple elastic cotton columns 5 into the interior of the folded film from the side opening in sequence. The folded film has an opening on one side, and the elastic cotton columns 5 are pushed horizontally into the opening in sequence by a cylinder push rod. The length direction of the elastic cotton columns 5 is consistent with the length direction of the film when they are pushed, and they are distributed in an array after being pushed. The position of the elastic cotton columns 5 is wrapped and limited by the tension of the film;

[0044] S3: Inserting mold rods: The mold rods further include a separation mold rod 6 having the same shape as the plurality of communicating air holes 3. The separation mold rods 6 are arrayed and inserted into the film filled with the rebound cotton columns 5. The separation mold rods 6 are inserted between the plurality of rebound cotton columns 5 and are vertically distributed with respect to the rebound cotton columns 5.

[0045] S4: Heat sealing: The folded and filled film is fed into a heat sealing mold. The multiple resilient cotton columns 5 in the film are separated by the pressure of the heat sealing mold, and the separating mold rod 6 is positioned against the pressure. Then, heat sealing is performed and the temperature is maintained between 160°C and 180°C to form multiple heat sealing strips, strip-shaped air columns 2, and communicating air holes 3. The hot pressing part of the heat sealing mold is used to seal the film and also to form heat sealing strips between the multiple resilient cotton columns 5, thereby forming the strip-shaped air columns 2. The parts that are not heat sealed due to the pressure and support of the separating mold rod 6 will form communicating air holes 3.

[0046] S5: Extracting the mold rod: extracting the partition mold rod 6 from the communicating air hole 3 on the edge of the film bag 1. One end of the partition mold rod 6 protrudes from the film bag 1. The partition mold rod 6 is manually extracted from the film bag 1 in sequence to free up the communicating air hole 3.

[0047] S6: Pressing and exhausting: The heat-sealed film bag 1 is passed through the upper and lower pressing rollers to exhaust the gas inside the film bag 1 and compress the rebound cotton column 5 into a flat shape. The pressing and holding operation can press the gas in the strip air column 2 out from the communicating air hole 3, thereby ensuring the flatness of the film bag 1 and saving the space it occupies;

[0048] S7: Connecting and Sealing: The sealing tube strip 4 is attached to the flat film bag 1 and connected by heat-pressing the sealing tube strip 4 using a heat sealing machine. The sealing tube strip 4 is heat-sealed at the end of the communicating pore 3 to maintain the sealing of the film bag 1;

[0049] S8: Cutting: The heat sealing strips on the film bags 1 are positioned and cut. The cut film bags 1 are of the same size. After passing the inspection, they are packaged and put into storage. When cutting, the heat sealing strips need to be cut to avoid air leakage.

[0050] like Figure 2-Figure 3 As shown, in some embodiments, the connecting air hole 3 is L-shaped and includes a horizontal hole 301 and a vertical hole 302. One end of the horizontal hole 301 is connected to the vertical hole 302, and the vertical hole 302 covers the end of the horizontal hole 301 as a whole. The other ends of the horizontal hole 301 and the vertical hole 302 are respectively connected to two strip air columns 2. The horizontal hole 301 is used to connect two adjacent strip air columns 2, and the vertical hole 302 can wrap one end of the horizontal hole 301, and the wrapped end is arranged opposite to the end of the connecting air hole 3 connected to the outside world, that is, when the outside is pumped out, other air can enter the strip air column 2 through the vertical hole 302, and when the strip air column 2 is stretched to the maximum, the tension of the membrane bag 1 can close the horizontal hole 301 through the hole wall of the vertical hole 302, so that each strip air column 2 can form an independent air cavity, ensuring that the safety of other air cavities will not be affected when a single air cavity is broken, thereby increasing safety.

[0051] like Figure 4As shown, in some embodiments, the rebound cotton column 5 is made of polyester fiber and is cylindrical in shape. The polyester fiber has good elasticity and is relatively soft, which can prevent the film bag 1 from being punctured. The cylindrical rebound cotton column 5 can effectively play a supporting and buffering role. Compared with the supporting ability of the gas filling alone, it can still provide a certain local protection function after the film bag 1 is broken, thereby improving the protection function of the air column bag.

[0052] like Figure 5 As shown, in some embodiments, the partition mold rod 6 is made of metal and has a smooth arc surface. The middle part of the partition mold rod 6 is constructed with multiple arc corners 601 for forming connecting air holes 3. The partition mold rod 6 is made of steel and has a smooth and rounded surface, which is convenient for not damaging the film bag 1 during subsequent removal to increase safety. The arc corner 601 is used to form L-shaped connecting air holes 3 in the heat sealing process.

[0053] like Figure 2 As shown, in some embodiments, a device for filling the rebound cotton column 5 is set at the bottom end of the folder, and the rebound cotton column 5 is inserted into it when the film is not completely fitted after being folded. The film will have an opening of a certain distance at the bottom end of the folder before entering the squeezing roller. The rebound cotton column 5 is inserted into it through the opening, and there is no need to stretch the film and insert it later, which saves steps and improves convenience.

[0054] like Figure 2 As shown, in some embodiments, a groove for wrapping the rebound cotton column 5 is provided on the heat sealing mold, which is used to wrap and protect the rebound cotton column 5 to prevent it from being damaged by heat, increase safety, and ensure that the strip air column 2 has enough space to wrap the rebound cotton column 5 after the film bag 1 is formed.

[0055] like Figure 1 As shown, in some embodiments, after the film bag 1 passes through the upper pressure roller and the lower pressure roller, the film bag 1 is maintained in a compressed state through a flat channel, and the connection and sealing process is performed in the compressed state. In order to maintain the flat state after sealing, it is necessary to use the flat channel to limit the elastic support capacity of the film bag 1, so as to prevent external gas from being drawn into the film bag 1 and maintain the product's shape.

[0056] like Figure 1 As shown, in some embodiments, the residual gas inside the film bag 1 can be extracted by an air pump in a compressed state, and the residual gas in the film bag 1 can be further sucked back into the film bag 1 using the air pump, thereby further reducing the overall volume of the film bag 1, thereby facilitating subsequent packaging and transportation operations and increasing the convenience of the product.

[0057] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A process for preparing an air column bag without an inflation point, characterized in that: The air column bags prepared by this process include: A film bag (1), wherein the film bag (1) is formed by folding a single layer of film in half and sealing the edges with a heat seal strip; A plurality of strip-shaped air columns (2) are constructed on the film bag (1) through a separation array of heat-sealing strips; A communication air hole (3) for connecting two adjacent strip-shaped air columns (2), wherein one of the communication air holes (3) is arranged at the edge of the membrane bag (1) and is connected to the outside world; A sealing tube strip (4) connected to the communicating air hole (3) at the edge and used to seal the communicating air hole (3); Rebound cotton columns (5) are respectively filled in the plurality of strip-shaped air columns (2); The process includes the following steps: S1: Loading: The film is pushed by the rotating support of multiple rollers to move to the folding device; S2: Filling cotton columns: Push multiple rebound cotton columns (5) into the film from the side opening of the folded film in sequence, with the rebound cotton columns (5) keeping their length direction consistent with the length direction of the film when they are pushed, and forming an array distribution after being pushed; S3: Inserting mold rods: inserting a plurality of partition mold rods (6) in an array inside the film filled with the rebound cotton columns (5), the partition mold rods (6) are inserted between the plurality of rebound cotton columns (5), and are vertically distributed with the rebound cotton columns (5); S4: Heat sealing: The folded and filled film is fed into a heat sealing mold, and the multiple resilient cotton columns (5) in the film are separated by the pressure of the heat sealing mold, and the separation mold rod (6) is positioned and resisted, and then heat-sealed and heated, with the temperature maintained between 160°C and 180°C, to form multiple heat-sealing strips, strip-shaped air columns (2) and connecting air holes (3); S5: Pull out the mold rod: Pull out the partition mold rod (6) from the communicating air hole (3) at the edge of the film bag (1); S6: Pressing and exhausting: passing the heat-sealed film bag (1) through the upper pressing roller and the lower pressing roller, so that the gas inside the film bag (1) is exhausted and the rebound cotton column (5) is squeezed and compressed into a flat shape; S7: connecting and sealing: attaching the sealing tube strip (4) to the flat film bag (1) and connecting the sealing tube strip (4) by heat pressing using a heat sealing machine; S8: Cutting: The heat sealing strip on the film bag (1) is positioned and cut, and the cut film bags (1) are of the same size. After passing the inspection, they are packaged and put into storage.

2. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: The communicating air hole (3) is L-shaped and comprises a transverse hole (301) and a vertical hole (302); one end of the transverse hole (301) is connected to the vertical hole (302); the vertical hole (302) entirely covers the end of the transverse hole (301); and the other ends of the transverse hole (301) and the vertical hole (302) are respectively connected to two strip-shaped air columns (2).

3. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: The rebound cotton column (5) is made of polyester fiber and is cylindrical in shape as a whole.

4. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: The partitioning mold rod (6) is made of metal and has a smooth arc surface. The middle portion of the partitioning mold rod (6) is configured with a plurality of arc corners (601) for forming the communicating air holes (3).

5. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: The device for filling the resilient cotton column (5) is arranged at the bottom end of the folding device, and the resilient cotton column (5) is inserted into the folding device when the film is not completely attached after being folded.

6. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: The heat sealing mold is provided with a groove for wrapping the rebound cotton column (5).

7. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: After the film bag (1) passes through the upper pressing roller and the lower pressing roller, the film bag (1) is kept in a compressed state through a flat channel, and a connection and sealing process is performed in the compressed state.

8. The process for preparing an air column bag without an inflation point according to claim 1, characterized in that: In the compressed state, the residual gas inside the membrane bag (1) can be extracted by an air pump.

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