A preparation device and preparation process of air column film

Abstract

The present invention provides a preparation device and preparation process of an air column film, and the preparation process of the air column film comprises the following steps: A1, providing a semi-cylindrical film coil, wherein the semi-cylindrical film of the semi-cylindrical film coil is formed by folding a film sheet to form a double-layer film structure with one side connected and the other side open; A2, providing an air valve film coil, and feeding the air valve film of the air valve film coil into the open side of the semi-cylindrical film; A3, hot-pressing the open side of the semi-cylindrical film and the air valve film; A4, hot-pressing the product obtained in step A3 in sections in its length direction, thereby forming an air column film on the coil. This process uses a semi-cylindrical film formed by folding a film sheet, which can solve the abnormalities caused by the use of upper and lower layers of rolled material sheet film in the prior art, such as different lengths and misalignment of the upper and lower films, and different stretching degrees of the upper and lower films.

Description

Technical Field

[0001] The invention relates to the field of production technology of air column films, and in particular to a preparation technology of air column films and a preparation device for realizing the preparation technology. Background Art

[0002] Air column film, also known as air column bag, is a new type of packaging material filled with natural air. At present, the production of air column bags on the market is to load and make bags with two layers of roll film. This method requires the equipment to be equipped with a double-layer loading rack. Because there are two single rolls, the lengths of the upper and lower films will be different, resulting in production waste. In addition, during the production process, the two layers of film will inevitably be misaligned, and the upper and lower films will be stretched to different degrees. In severe cases, the bottom is not heat-sealed, resulting in a large number of unqualified products. Summary of the invention

[0003] Therefore, in order to solve the above problems, the present invention provides a preparation process of an air column film and a preparation device for realizing the preparation process.

[0004] To achieve the above purpose, the technical solution provided by the present invention is as follows:

[0005] A preparation process of an air column film comprises the following steps:

[0006] A1, providing a semi-cylindrical film coil, wherein the semi-cylindrical film of the semi-cylindrical film coil is formed by folding a film sheet to form a double-layer film structure with one side connected and the other side open;

[0007] A2, providing the air valve film coil, and feeding the air valve film of the air valve film coil into the opening side of the half-cylinder film;

[0008] A3, hot-pressing the opening side of the semi-cylindrical membrane to the air valve membrane;

[0009] A4, hot pressing the product obtained in step A3 in sections along its length, so as to form an air column film on the coil.

[0010] Furthermore, after step A4, the method further includes step A5 of making creases between two adjacent air column films.

[0011] Furthermore, in step A5, heat pressing is performed between two adjacent air column films to form a crease point.

[0012] Furthermore, in step A2, an opening mechanism is provided, which has an upper conduction roller and a lower conduction roller arranged in parallel, the upper film and the lower mold on the opening side of the semi-cylindrical film respectively bypass the upper surface of the upper conduction roller and the lower surface of the lower conduction roller, and the air valve film passes through the middle position of the upper conduction roller and the lower conduction roller, thereby delivering the air valve film into the opening side of the semi-cylindrical film.

[0013] A device for preparing an air column film comprises a frame and a semi-cylindrical film unloading rack, an air valve film unloading rack, an opening mechanism, an opening hot pressing mechanism and a segmented hot pressing mechanism arranged on the frame; the opening mechanism is arranged at the transmission rear end of the semi-cylindrical film unloading rack and the air valve film unloading rack, the opening mechanism has an upper conduction roller and a lower conduction roller arranged in parallel, the opening hot pressing mechanism is arranged at the transmission rear end of the opening mechanism, and the segmented hot pressing mechanism is arranged at the transmission rear end of the opening mechanism.

[0014] Furthermore, the opening mechanism and the half-cylinder film unloading rack are in the same plane; the air valve film unloading rack and the opening mechanism are in different planes, and a corner mechanism is also provided between the air valve film unloading rack and the opening mechanism.

[0015] Furthermore, a half-cylinder film conveying roller assembly located in the same plane is arranged between the opening mechanism and the half-cylinder film unloading rack, and the half-cylinder film conveying roller assembly has two rows of conveying rollers arranged in an alternating manner, and a correction sensor is arranged between two adjacent conveying rollers of the half-cylinder film conveying roller assembly.

[0016] Furthermore, an air valve film conveying roller assembly located in the same plane is arranged between the corner mechanism and the air valve film unloading rack, and the air valve film conveying roller assembly has two rows of conveying rollers arranged in an alternating manner.

[0017] Furthermore, a crease hot pressing mechanism is also provided at the transmission rear end of the segmented hot pressing mechanism.

[0018] Furthermore, a receiving roller is also provided on the frame, and the receiving roller is arranged at the transmission rear end of the crease hot pressing mechanism.

[0019] The technical solution provided by the present invention has the following beneficial effects:

[0020] This process uses a semi-cylindrical film formed by folding a film sheet. The semi-cylindrical film has a double-layer film and is open on one side, which effectively avoids abnormal situations caused by the different lengths, misalignment and different stretching degrees of the upper and lower films caused by the separate feeding of the double-layer film. The bottom does not need to be heat-sealed, and the heat seal and burr size of the bottom of the product are subtracted. The original film width can be saved by about 5-10 mm in the same product.

[0021] At the same time, in the preparation device, at least one set of unloading racks, one set of feeding motors and one set of edge sealing equipment in the original preparation device can be saved, making the structure simpler and the preparation cost lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a flowchart of the preparation process of the air column film in the embodiment;

[0023] Figure 2The figure shows a schematic diagram of the structure of the device for preparing the air column film in the embodiment;

[0024] Figure 3 Shown is a partial structural schematic diagram of a device for preparing an air column film in an embodiment. DETAILED DESCRIPTION

[0025] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0026] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0027] Embodiment 1

[0028] Reference Figure 1 As shown, the present embodiment provides a process for preparing an air column film, comprising the following steps:

[0029] A1, providing a semi-cylindrical film roll, wherein the semi-cylindrical film of the semi-cylindrical film roll is formed by folding a film sheet to form a double-layer film structure with one side connected and the other side open. The semi-cylindrical film has a double-layer film and one side is a closed structure.

[0030] A2, providing an air valve film coil, and feeding the air valve film of the air valve film coil into the opening side of the half-cylinder film.

[0031] Specifically, in this embodiment, in order to facilitate the delivery of the valve film of the valve film coil into the opening side of the semi-cylindrical film, the opening side of the semi-cylindrical film needs to be opened first. To this end, in this step, an opening opening mechanism is provided, specifically as follows Figure 3 As shown, the opening mechanism has an upper conductive roller 111 and a lower conductive roller 112 arranged in parallel, the upper film and the lower mold on the opening side of the semi-cylindrical film 1 respectively bypass the upper surface of the upper conductive roller 111 and the lower surface of the lower conductive roller 112, and the air valve film 2 passes through the middle position of the upper conductive roller 111 and the lower conductive roller 112, thereby realizing the delivery of the air valve film 2 to the opening side of the semi-cylindrical film 1. In this way, the opening side of the semi-cylindrical film 1 can be well opened, which is convenient for the delivery of the air valve film 2.

[0032] A3, hot-pressing the opening side of the semi-cylindrical membrane to connect the air valve membrane; so that the air valve membrane is assembled to the opening side of the semi-cylindrical membrane. Specifically, the connection structure and hot-pressing method are prior art and will not be described in detail here.

[0033] A4, the product obtained in step A3 is subjected to segmented hot pressing in the length direction thereof, so as to form an air column film on the coil. Specifically, the segmented hot pressing method is also a prior art and will not be described in detail here.

[0034] In this way, the forming of the air column film is achieved.

[0035] More specifically, the product of this embodiment is collected in the form of a roll. Therefore, in order to facilitate the subsequent acquisition of a single air column film, this embodiment further includes step A5 after step A4, in which a crease is made between two adjacent air column films. After the crease operation is completed, the film is rolled up. The crease structure is added to facilitate the subsequent separation operation. This method of rolling up the film in a roll is convenient for storage and transportation; the single air column film is cut when needed.

[0036] More specifically, the crease points are formed by hot pressing between two adjacent air column films, and the hot pressing operation is simple and easy to implement. Of course, in other embodiments, the operation can also be performed by punching and other methods.

[0037] Reference Figure 2 and Figure 3 As shown, the present embodiment also provides a device for preparing an air column film for realizing the above-mentioned process, comprising a frame 100 and a semi-cylindrical film unloading rack 11, an air valve film unloading rack 21, an opening mechanism, an opening hot pressing mechanism 401 and a segmented hot pressing mechanism 402 arranged on the frame 100; the opening mechanism is arranged at the transmission rear end of the semi-cylindrical film unloading rack 11 and the air valve film unloading rack 21, the opening mechanism has an upper conduction roller 111 and a lower conduction roller 112 arranged in parallel, the opening hot pressing mechanism 401 is arranged at the transmission rear end of the opening mechanism, and the segmented hot pressing mechanism 402 is arranged at the transmission rear end of the opening mechanism.

[0038] Specifically, the above-mentioned transmission rear end refers to the position that is passed first during the transmission of the coil as the transmission front end, and the position that is passed later as the transmission rear end; for example, the coil first passes through the opening opening mechanism and then passes through the opening hot pressing mechanism 401, therefore, the opening hot pressing mechanism 401 is arranged at the transmission rear end of the opening opening mechanism, and so on.

[0039] During the operation, the semi-cylindrical film coil is placed on the semi-cylindrical film unloading rack 11, and the semi-cylindrical film 1 passes through the opening opening mechanism. The upper film and the lower mold on the opening side of the semi-cylindrical film 1 respectively bypass the upper surface of the upper conductive roller 111 and the lower surface of the lower conductive roller 112, thereby opening the opening. The air valve film coil is placed on the air valve film unloading rack 21, and the air valve film 2 passes through the middle position of the upper conductive roller 111 and the lower conductive roller 112, thereby delivering the air valve film 2 to the opening side of the semi-cylindrical film 1. Afterwards, the film layer output by the opening opening mechanism is transmitted to the opening hot pressing mechanism 401, and the opening hot pressing mechanism 401 connects the opening side of the semi-cylindrical film 1 with the air valve film 2 by hot pressing, so that the air valve film 2 is assembled to the opening side of the semi-cylindrical film 1. The film layer output by the opening hot pressing mechanism 401 is transmitted to the segmented hot pressing mechanism 402, and is segmentedly hot pressed by the segmented hot pressing mechanism 402, thereby forming an air column film on the coil.

[0040] Specifically, the frame 100 is also provided with a crease hot-pressing mechanism 403 and a receiving roller 13. The crease hot-pressing mechanism 403 is provided at the transmission rear end of the segmented hot-pressing mechanism 402. The product outputted by the segmented hot-pressing mechanism 402 enters the crease hot-pressing mechanism 403. The crease hot-pressing mechanism 403 performs hot-pressing between two adjacent air column films to form a crease point. Afterwards, the product outputted by the crease hot-pressing mechanism 403 is received by the receiving roller 13.

[0041] Further, in this embodiment, the semi-cylindrical film unwinding rack 11 and the air valve film unwinding rack 21 both use an air expansion shaft to fix the film roll, which is firmly fixed and easy to operate. Of course, in other embodiments, other structures can also be used instead.

[0042] Furthermore, in order to prevent interference between the transmission of the semi-cylindrical film 1 and the air valve film 2 before compounding, in this embodiment, the opening mechanism and the semi-cylindrical film unloading rack 11 are in the same plane; the air valve film unloading rack 21 is in a different plane from the opening mechanism, and a corner mechanism 209 is also provided between the air valve film unloading rack 21 and the opening mechanism. In this way, the semi-cylindrical film 1 and the air valve film 2 can be transmitted in different planes, such as the semi-cylindrical film 1 is transmitted on a vertical plane located in the front, and the air valve film 2 is transmitted on a vertical plane located in the rear; they do not interfere with each other. When it is necessary to enter the opening mechanism, the air valve film 2 enters the plane where the semi-cylindrical film 1 is located through the turning of the corner mechanism 209, thereby passing through the middle position of the upper conduction roller 111 and the lower conduction roller 112, and cooperating with the opening side of the semi-cylindrical film 1.

[0043] More specifically, in this embodiment, a semi-cylindrical film conveying roller assembly located in the same plane is further provided between the opening mechanism and the semi-cylindrical film unwinding rack 11, and the semi-cylindrical film conveying roller assembly has two rows of conveying rollers arranged alternately, and the semi-cylindrical film 1 is reciprocatedly transmitted between the two rows of conveying rollers, such as Figure 3In the embodiment, the four conveying rollers 103, 105, 107 and 109 are in one row, and the four conveying rollers 104, 106, 108 and 110 are in another row. After the semi-tube film 1 is outputted through the coil, it passes through the conveying rollers 101, 102, 103, 104, 105, 106, 107, 108, 109 and 110 in sequence, forming an M-shaped winding tension structure with better tension. Then it enters the upper conductive roller 111 and the lower conductive roller 112 of the opening mechanism.

[0044] Furthermore, a deviation correction sensor 12 is provided between two adjacent conveying rollers of the semi-cylinder film conveying roller assembly (between conveying rollers 101 and 102 in this specific embodiment), and the M-shaped winding tension structure cooperates with the deviation correction sensor 12 to make the transmission of the semi-cylinder film 1 more accurate.

[0045] Similarly, a valve film conveying roller assembly located on the same plane is arranged between the corner mechanism 209 and the valve film unloading rack 21. The valve film conveying roller assembly has two rows of conveying rollers arranged alternately, and the valve film 2 is reciprocatedly transported between the two rows of conveying rollers. Figure 3 In the figure, the air valve film conveying roller assembly includes conveying rollers 201, 202, 203, 204, 205, 206, 207 and 208; wherein, the three conveying rollers 201, 203 and 205 are in one row, and the three conveying rollers 202, 204 and 206 are in another row; after the air valve film 2 is output through the coil, it passes through the conveying rollers 201, 202, 203, 204, 205 and 206 in sequence to form an M-shaped winding tension structure with better tension; then, it passes through the conveying rollers 207 and 208 and enters the corner mechanism 209.

[0046] Of course, in other embodiments, the transmission method of the half-cylinder membrane 1 and the air valve membrane 2 is not limited to this.

[0047] More specifically, a receiving and conveying roller assembly is provided between the crease hot pressing mechanism 403 and the receiving roller 13. The receiving and conveying roller assembly also has two rows of conveying rollers. The product film is reciprocatedly conveyed between the two rows of conveying rollers. Figure 2 In the embodiment, the valve film conveying roller assembly includes conveying rollers 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130 and 131, wherein the conveying rollers 121, 123, 125, 127, 129 and 131 are in one row, and the conveying rollers 120, 122, 124, 126, 128 and 130 are in another row; the product film output by the crease hot pressing mechanism 403 passes through the conveying rollers 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130 and 131 in sequence to form an M-shaped winding tension structure to maintain the winding tension. Finally, it enters the receiving roller 13 for winding.

[0048] This process uses a semi-cylindrical film 1 formed by folding a film sheet. The semi-cylindrical film 1 has a double-layer film and is open on one side, which effectively avoids abnormal conditions caused by the different lengths, misalignment and different stretching degrees of the upper and lower films caused by separate feeding of the double-layer film. The bottom does not need to be heat-sealed, and the heat seal and burr size of the bottom of the product are subtracted. The original film width can be saved by about 5-10 mm in the same product.

[0049] At the same time, in the preparation device, at least one set of unloading racks, one set of feeding motors and one set of edge sealing equipment in the original preparation device can be saved, making the structure simpler and the preparation cost lower.

[0050] Embodiment 2

[0051] The preparation process of an air column film provided in this embodiment is substantially the same as the preparation process of an air column film provided in the first embodiment, except that: in this embodiment, after the air column film is formed in step A4, step A5' is entered to directly punch and separate the single air column film by slitting to obtain a single air column film. The waste on the coil is collected by a receiving roller.

[0052] The present embodiment provides a device for preparing an air column film, which is substantially the same as the device for preparing an air column film provided in the first embodiment, except that in the present embodiment, a slitting mechanism (not shown) is provided at the rear end of the transmission of the segmented hot pressing mechanism 402, and the slitting mechanism performs slitting to cut and separate a single air column film to obtain a single air column film.

[0053] Of course, in other embodiments, other operating mechanisms may be provided at the rear end of the transmission of the segmented hot pressing mechanism 402 so as to directly perform the winding.

[0054] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A process for preparing an air column membrane, characterized in that: The steps include: A1, providing a semi-cylindrical film coil, wherein the semi-cylindrical film of the semi-cylindrical film coil is formed by folding a film sheet to form a double-layer film structure with one side connected and the other side open; A2, providing an air valve film coil, and feeding the air valve film of the air valve film coil into the opening side of the semi-cylindrical film; providing an opening opening mechanism, wherein the opening opening mechanism has an upper conduction roller and a lower conduction roller arranged in parallel, and the upper film and the lower mold on the opening side of the semi-cylindrical film respectively bypass the upper surface of the upper conduction roller and the lower surface of the lower conduction roller, and the air valve film passes through the middle position of the upper conduction roller and the lower conduction roller, thereby realizing feeding the air valve film into the opening side of the semi-cylindrical film; The opening mechanism and the semi-cylindrical film unloading rack for providing the semi-cylindrical film coil are in the same plane; the air valve film unloading rack for providing the air valve film coil is in a different plane from the opening mechanism, and a turning mechanism is further provided between the air valve film unloading rack and the opening mechanism. The air valve film enters the plane where the semi-cylindrical film is located through the turning of the turning mechanism, thereby passing through the middle position of the upper conduction roller and the lower conduction roller, and matching with the opening side of the semi-cylindrical film; A semi-cylindrical film conveying roller assembly located in the same plane is also arranged between the opening mechanism and the semi-cylindrical film unwinding rack, and the semi-cylindrical film conveying roller assembly has two rows of conveying rollers arranged in a staggered manner, and the semi-cylindrical film is reciprocatedly transmitted between the two rows of conveying rollers to form an M-shaped winding tension structure; An air valve film conveying roller assembly located in the same plane is arranged between the corner mechanism and the air valve film unwinding rack, and the air valve film conveying roller assembly has two rows of conveying rollers arranged in a staggered manner, and the air valve film is reciprocatedly transmitted between the two rows of conveying rollers to form an M-shaped winding tension structure; A3, hot-pressing the opening side of the semi-cylindrical membrane to the air valve membrane; A4, hot pressing the product obtained in step A3 in sections along its length direction, so as to form an air column film on the coil.

2. The process for preparing the air column membrane according to claim 1, characterized in that: After step A4, the method further includes step A5 of making folds between two adjacent air column films.

3. The process for preparing the air column membrane according to claim 2, characterized in that: In step A5, heat pressing is performed between two adjacent air column films to form fold points.

4. A preparation device for air column film, used for producing air column film using half-cylindrical film as raw material, wherein the half-cylindrical film is formed by folding a film sheet to form a double-layer film structure with one side connected and the other side open, characterized in that: The machine comprises a frame and a half-cylinder film unloading rack, an air valve film unloading rack, an opening mechanism, an opening hot pressing mechanism and a segmented hot pressing mechanism arranged on the frame; the opening mechanism is arranged at the transmission rear end of the half-cylinder film unloading rack and the air valve film unloading rack, the opening mechanism has an upper conduction roller and a lower conduction roller arranged in parallel, the opening hot pressing mechanism is arranged at the transmission rear end of the opening mechanism, and the segmented hot pressing mechanism is arranged at the transmission rear end of the opening mechanism; the upper film and the lower mold on the opening side of the half-cylinder film respectively bypass the upper surface of the upper conduction roller and the lower surface of the lower conduction roller, and the air valve film passes through the middle position of the upper conduction roller and the lower conduction roller, thereby realizing the delivery of the air valve film to the opening side of the half-cylinder film; the opening mechanism and the half-cylinder film unloading rack are in the same plane; the air valve film unloading rack and the opening mechanism are The planes where the mechanisms are located are different, and a turning mechanism is also arranged between the air valve film unloading rack and the opening mechanism. The air valve film enters the plane where the semi-cylinder film is located through the turning of the turning mechanism, thereby passing through the middle position of the upper conduction roller and the lower conduction roller, and cooperating with the opening side of the semi-cylinder film; a semi-cylinder film conveying roller assembly located in the same plane is also arranged between the opening mechanism and the semi-cylinder film unloading rack, and the semi-cylinder film conveying roller assembly has two rows of conveying rollers arranged in an alternating manner, and the semi-cylinder film is reciprocated between the two rows of conveying rollers to form an M-shaped winding tension structure; an air valve film conveying roller assembly located in the same plane is arranged between the turning mechanism and the air valve film unloading rack, and the air valve film conveying roller assembly has two rows of conveying rollers arranged in an alternating manner, and the air valve film is reciprocated between the two rows of conveying rollers to form an M-shaped winding tension structure.

5. The device for preparing the air column film according to claim 4, characterized in that: A deviation correction sensor is arranged between two adjacent conveying rollers of the semi-cylinder film conveying roller assembly.

6. The device for preparing the air column film according to claim 4, characterized in that: A crease hot pressing mechanism is also provided at the transmission rear end of the segmented hot pressing mechanism.

7. The device for preparing the air column film according to claim 6, characterized in that: The frame is also provided with a receiving roller, which is arranged at the transmission rear end of the crease hot pressing mechanism.

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