Process for making a stretch-resistant air column bag

Abstract

The application belongs to the technical field of composite flexible packaging, and particularly relates to a preparation process of a tensile air column bag, which comprises the following steps: film feeding, air nozzle film feeding, point sealing and heat sealing, label following, vertical sealing and heat sealing, cooling, horizontal sealing, point sealing and heat sealing, collecting, air column bag coiled material feeding, folding, air locking, edge locking, cutting, packaging and warehousing and the like. The purpose of the application is to provide a preparation process of a tensile air column bag with high production efficiency, stable product quality, simple process control, good process stability and no deformation.

Description

Technical Field

[0001] This invention belongs to the field of composite flexible packaging technology, specifically referring to a process for preparing tensile-resistant air column bags. Background Technology

[0002] Air column bags, also known as cushioning air column bags, are a new type of packaging system widely used for product packaging and transportation, filled with natural air. Air column bags are characterized by complete filling with a single inflation, with each air column existing independently; if damaged, only the corresponding air column fails, while the others remain unaffected. Currently, there are many types of air column bags. However, during the production process, the upper and lower films are heat-sealed, and cooling is achieved through natural cooling or air cooling. Air cooling, over time, causes the blown air to heat up. When the cylindrical base material is placed, the excessive internal temperature often leads to deformation. Thermal expansion and contraction alter the material of the air column bag, causing the original 10 cm length to become 15 cm or even 20 cm, significantly increasing the scrap rate. For example, the bag-making process in patent number 201710490085X uses commonly used cooling methods such as air cooling. Air column bags produced using this method are of poor quality and sometimes even deformed. Therefore, improvements in the cooling process directly determine the product quality of air column bags. Summary of the Invention

[0003] The purpose of this invention is to provide a tensile air column bag preparation process that features high production efficiency, stable product quality, simple process control, good process stability, and no deformation.

[0004] The objective of this invention is achieved as follows: a process for preparing a tensile-resistant air column bag, comprising the following steps:

[0005] Step 1: Film feeding: The film is put into the upper and lower rollers to form the upper film and the lower film. The displacement of the upper and lower films is corrected by the fully automatic correction device so that the upper and lower films are on the same plane.

[0006] Step 2: Air nozzle film feeding, spot sealing and heat sealing: The air nozzle film is put into the roller shaft, the position between the air nozzle film and the upper film is adjusted, and the air nozzle film and the upper film are heat sealed together by the heat sealing mold plate. The air inlet shape and the air inlet heat sealing line are die-cast on the air nozzle film and the upper film. The air inlet is elliptical in shape.

[0007] Step 3: Tracking: The shape of the air inlet from the die-casting in Step 2 is detected by the sensor on the bag making machine to control the quantity and detect the status;

[0008] Step 4: Vertical heat sealing: The lower film and the upper film with the air nozzle are synchronously driven to the bottom of the integrated aluminum alloy vertical sealing template by the film drive pressure roller. The high temperature of the vertical sealing template heat seals the lower film and the upper film with the air nozzle together, completing the heat pressing of the air column heat sealing line and forming an independent air column cavity.

[0009] Step 5: Cooling: The product from Step 4 is cooled by water cooling using special cooling rollers;

[0010] Step Six: Horizontal Sealing, Spot Sealing and Heat Sealing: The lower film that has been vertically sealed and the upper film with the air nozzle that has been heat-sealed continue to move forward by the film-belt pressure roller in front of them, and enter the area below the horizontal sealing and spot sealing mold plate. There are two horizontal sealing lines in total, including the upper heat sealing line and the lower heat sealing line. The horizontal sealing mold plate is made of stainless steel.

[0011] Step 7: Collection: After the above steps are completed, a roller is set at the rear end of the bag making machine to roll up the processed air column bag into a cylindrical shape, and then the air column bag roll is removed.

[0012] Step 8: Feeding the air column bag roll: Place the rolled air column bag roll onto the roller of the air column bag shearing machine, check the position, and manually pull the roll to the drive pressure roller to complete the feeding process;

[0013] Step 9: Folding: The air column bag roll after being fed is folded for the first time by an automatic shearing machine, folding one side. After the above folding, it enters the second folding and is folded to the specified width, completing the air column bag processing folding process.

[0014] Step 10: Air Locking: The air column bag roll, which has been folded twice, is passed through a hot-pressing mold plate. The hot-pressing mold plate is a single strip shape, which heat-seals the air duct opening in the main inflation channel to lock in the air.

[0015] Step 11: Sealing the edge: The air column bag with the air passage heat-sealed is automatically aligned and moved to the bottom of the side sealing mold. The side sealing mold consists of two parallel pressure strips to complete the side sealing heat sealing of the air column bag.

[0016] Step 12: Cutting: Using sensors for displacement positioning, cut the air column bag in the middle of the air column strip near the edge seal, ensuring that the cut air column bags are of uniform size.

[0017] Step 13: Packaging and Warehousing: The detector checks the number of cuts. Once a certain number is reached, the air column bags are manually packaged. After the appearance and internal quality are inspected and approved, the bags are packaged and put into storage.

[0018] Preferably, the heat sealing temperature between the air nozzle film and the upper film in step two is 195℃~230℃.

[0019] Preferably, the material of the integrated aluminum alloy vertical sealing template in step four is iron.

[0020] Preferably, in step five, the temperature of the water in the cooling roller is between 0 and -35°C. The roll material produced by water cooling will not deform into a twisted shape when placed, unlike the roll material produced by existing technology, and will not affect the normal processing and use of the product.

[0021] Preferably, in step five, the cooling roller adopts a hollow design, with one end being a water inlet and the other end being a water outlet. Both ends are connected to an industrial chiller to cool the upper and lower film layers that have passed through the cooling roller.

[0022] Preferably, step nine involves folding the air column bag on both sides. Compared to the single folding of the prior art, the double folding increases the size of the air column bag's lid, providing comprehensive protection for the product placed inside when using the air column bag.

[0023] Preferably, the strip shape on the hot press mold plate in step ten has a length of 1-7 cm.

[0024] The outstanding and beneficial technical effects of this invention compared with the prior art are: the tensile air column bag preparation process of this invention has high production efficiency, stable product quality, simple process control, good process stability, and no deformation. Detailed Implementation

[0025] The present invention will be further described below with reference to specific embodiments.

[0026] Example 1:

[0027] A process for preparing a tensile-resistant air column bag includes the following steps:

[0028] Step 1: Film feeding: The film is put into the upper and lower rollers to form the upper film and the lower film. The displacement of the upper and lower films is corrected by the fully automatic correction device so that the upper and lower films are on the same plane.

[0029] Step 2: Air nozzle diaphragm feeding, spot sealing and heat sealing: Fit the air nozzle diaphragm into the roller shaft, adjust the position between the air nozzle diaphragm and the upper film, and heat seal the air nozzle diaphragm and the upper film together through the heat sealing mold plate. The shape of the air inlet and the heat sealing line of the air inlet are die-cast on the air nozzle diaphragm and the upper film. The shape of the air inlet is elliptical. The heat sealing temperature of the air nozzle diaphragm and the upper film is 195℃.

[0030] Step 3: Tracking: The shape of the air inlet from the die-casting in Step 2 is detected by the sensor on the bag making machine to control the quantity and detect the status;

[0031] Step 4: Vertical heat sealing: The lower film and the upper film with the air nozzle are synchronously driven to the bottom of the integrated aluminum alloy vertical sealing template by the film drive pressure roller. The high temperature of the vertical sealing template heat seals the lower film and the upper film with the air nozzle together, completing the heat pressing of the air column heat sealing line and forming an independent air column cavity.

[0032] Step 5: Cooling: The product from Step 4 is cooled by water cooling using a special cooling roller, with the water temperature inside the cooling roller at 0℃.

[0033] Step Six: Horizontal Sealing, Spot Sealing and Heat Sealing: The lower film that has been vertically sealed and the upper film with the air nozzle that has been heat-sealed continue to move forward by the film-belt pressure roller in front of them, and enter the area below the horizontal sealing and spot sealing mold plate. There are two horizontal sealing lines in total, including the upper heat sealing line and the lower heat sealing line. The horizontal sealing mold plate is made of stainless steel.

[0034] Step 7: Collection: After the above steps are completed, a roller is set at the rear end of the bag making machine to roll up the processed air column bag into a cylindrical shape, and then the air column bag roll is removed.

[0035] Step 8: Feeding the air column bag roll: Place the rolled air column bag roll onto the roller of the air column bag shearing machine, check the position, and manually pull the roll to the drive pressure roller to complete the feeding process;

[0036] Step 9: Folding: The air column bag roll after being fed is folded for the first time by an automatic shearing machine, folding one side. After the above folding, it enters the second folding and is folded to the specified width, completing the air column bag processing folding process.

[0037] Step 10: Air Locking: The air column bag roll, which has been folded twice, is passed through a hot-pressing mold plate. The hot-pressing mold plate is a single strip shape, which heat-seals the air duct opening in the main inflation channel to lock in the air.

[0038] Step 11: Sealing the edge: The air column bag with the air passage heat-sealed is automatically aligned and moved to the bottom of the side sealing mold. The side sealing mold consists of two parallel pressure strips to complete the side sealing heat sealing of the air column bag.

[0039] Step 12: Cutting: Using sensors for displacement positioning, cut the air column bag in the middle of the air column strip near the edge seal, ensuring that the cut air column bags are of uniform size.

[0040] Step 13: Packaging and Warehousing: The detector checks the number of cuts. Once a certain number is reached, the air column bags are manually packaged. After the appearance and internal quality are inspected and approved, the bags are packaged and put into storage.

[0041] Example 2:

[0042] A process for preparing a tensile-resistant air column bag includes the following steps:

[0043] Step 1: Film feeding: The film is put into the upper and lower rollers to form the upper film and the lower film. The displacement of the upper and lower films is corrected by the fully automatic correction device so that the upper and lower films are on the same plane.

[0044] Step 2: Air nozzle diaphragm feeding, spot sealing and heat sealing: The air nozzle diaphragm is put into the roller shaft, the position between the air nozzle diaphragm and the upper film is adjusted, and the air nozzle diaphragm and the upper film are heat sealed together by the heat sealing mold plate. The shape of the air inlet and the heat sealing line of the air inlet are die-cast on the air nozzle diaphragm and the upper film. The shape of the air inlet is elliptical. The heat sealing temperature of the air nozzle diaphragm and the upper film is 210℃.

[0045] Step 3: Tracking: The shape of the air inlet from the die-casting in Step 2 is detected by the sensor on the bag making machine to control the quantity and detect the status;

[0046] Step 4: Vertical heat sealing: The lower film and the upper film with the air nozzle are synchronously driven to the bottom of the integrated aluminum alloy vertical sealing template by the film drive pressure roller. The high temperature of the vertical sealing template heat seals the lower film and the upper film with the air nozzle together, completing the heat pressing of the air column heat sealing line and forming an independent air column cavity.

[0047] Step 5: Cooling: The product from Step 4 is cooled by water cooling using a special cooling roller. The water temperature inside the cooling roller is -20℃.

[0048] Step Six: Horizontal Sealing, Spot Sealing and Heat Sealing: The lower film that has been vertically sealed and the upper film with the air nozzle that has been heat-sealed continue to move forward by the film-belt pressure roller in front of them, and enter the area below the horizontal sealing and spot sealing mold plate. There are two horizontal sealing lines in total, including the upper heat sealing line and the lower heat sealing line. The horizontal sealing mold plate is made of stainless steel.

[0049] Step 7: Collection: After the above steps are completed, a roller is set at the rear end of the bag making machine to roll up the processed air column bag into a cylindrical shape, and then the air column bag roll is removed.

[0050] Step 8: Feeding the air column bag roll: Place the rolled air column bag roll onto the roller of the air column bag shearing machine, check the position, and manually pull the roll to the drive pressure roller to complete the feeding process;

[0051] Step 9: Folding: The air column bag roll after being fed is folded for the first time by an automatic shearing machine, folding one side. After the above folding, it enters the second folding and is folded to the specified width, completing the air column bag processing folding process.

[0052] Step 10: Air Locking: The air column bag roll, which has been folded twice, is passed through a hot-pressing mold plate. The hot-pressing mold plate is a single strip shape, which heat-seals the air duct opening in the main inflation channel to lock in the air.

[0053] Step 11: Sealing the edge: The air column bag with the air passage heat-sealed is automatically aligned and moved to the bottom of the side sealing mold. The side sealing mold consists of two parallel pressure strips to complete the side sealing heat sealing of the air column bag.

[0054] Step 12: Cutting: Using sensors for displacement positioning, cut the air column bag in the middle of the air column strip near the edge seal, ensuring that the cut air column bags are of uniform size.

[0055] Step 13: Packaging and Warehousing: The detector checks the number of cuts. Once a certain number is reached, the air column bags are manually packaged. After the appearance and internal quality are inspected and approved, the bags are packaged and put into storage.

[0056] Example 3:

[0057] A process for preparing a tensile-resistant air column bag includes the following steps:

[0058] Step 1: Film feeding: The film is put into the upper and lower rollers to form the upper film and the lower film. The displacement of the upper and lower films is corrected by the fully automatic correction device so that the upper and lower films are on the same plane.

[0059] Step 2: Air nozzle diaphragm feeding, spot sealing and heat sealing: Fit the air nozzle diaphragm into the roller shaft, adjust the position between the air nozzle diaphragm and the upper film, and heat seal the air nozzle diaphragm and the upper film together through the heat sealing mold plate. The shape of the air inlet and the heat sealing line of the air inlet are die-cast on the air nozzle diaphragm and the upper film. The shape of the air inlet is elliptical. The heat sealing temperature of the air nozzle diaphragm and the upper film is 230℃.

[0060] Step 3: Tracking: The shape of the air inlet from the die-casting in Step 2 is detected by the sensor on the bag making machine to control the quantity and detect the status;

[0061] Step 4: Vertical heat sealing: The lower film and the upper film with the air nozzle are synchronously driven to the bottom of the integrated aluminum alloy vertical sealing template by the film drive pressure roller. The high temperature of the vertical sealing template heat seals the lower film and the upper film with the air nozzle together, completing the heat pressing of the air column heat sealing line and forming an independent air column cavity.

[0062] Step 5: Cooling: The product from Step 4 is cooled by water cooling using a special cooling roller. The water temperature inside the cooling roller is -35℃.

[0063] Step Six: Horizontal Sealing, Spot Sealing and Heat Sealing: The lower film that has been vertically sealed and the upper film with the air nozzle that has been heat-sealed continue to move forward by the film-belt pressure roller in front of them, and enter the area below the horizontal sealing and spot sealing mold plate. There are two horizontal sealing lines in total, including the upper heat sealing line and the lower heat sealing line. The horizontal sealing mold plate is made of stainless steel.

[0064] Step 7: Collection: After the above steps are completed, a roller is set at the rear end of the bag making machine to roll up the processed air column bag into a cylindrical shape, and then the air column bag roll is removed.

[0065] Step 8: Feeding the air column bag roll: Place the rolled air column bag roll onto the roller of the air column bag shearing machine, check the position, and manually pull the roll to the drive pressure roller to complete the feeding process;

[0066] Step 9: Folding: The air column bag roll after being fed is folded for the first time by an automatic shearing machine, folding one side. After the above folding, it enters the second folding and is folded to the specified width, completing the air column bag processing folding process.

[0067] Step 10: Air Locking: The air column bag roll, which has been folded twice, is passed through a hot-pressing mold plate. The hot-pressing mold plate is a single strip shape, which heat-seals the air duct opening in the main inflation channel to lock in the air.

[0068] Step 11: Sealing the edge: The air column bag with the air passage heat-sealed is automatically aligned and moved to the bottom of the side sealing mold. The side sealing mold consists of two parallel pressure strips to complete the side sealing heat sealing of the air column bag.

[0069] Step 12: Cutting: Using sensors for displacement positioning, cut the air column bag in the middle of the air column strip near the edge seal, ensuring that the cut air column bags are of uniform size.

[0070] Step 13: Packaging and Warehousing: The detector checks the number of cuts. Once a certain number is reached, the air column bags are manually packaged. After the appearance and internal quality are inspected and approved, the bags are packaged and put into storage.

[0071] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A process for preparing a tensile-resistant air column bag, characterized in that, Includes the following steps: Step 1: Film feeding: The film is put into the upper and lower rollers to form the upper film and the lower film. The displacement of the upper and lower films is corrected by the fully automatic correction device so that the upper and lower films are on the same plane. Step 2: Air nozzle diaphragm feeding and spot sealing: Fit the air nozzle diaphragm onto the roller shaft, adjust the position between the air nozzle diaphragm and the upper film, and heat seal the air nozzle diaphragm and the upper film together through the heat sealing mold plate. The shape of the air inlet and the heat sealing line of the air inlet are die-cast on the air nozzle diaphragm and the upper film. The shape of the air inlet is elliptical. The heat sealing temperature of the air nozzle diaphragm and the upper film is 195℃~230℃. Step 3: Tracking: The shape of the air inlet from the die-casting in Step 2 is detected by the sensor on the bag making machine to control the quantity and detect the status; Step 4: Vertical heat sealing: The lower film and the upper film with the air nozzle are synchronously driven to the bottom of the integrated aluminum alloy vertical sealing template by the film drive pressure roller. The high temperature of the vertical sealing template heat seals the lower film and the upper film with the air nozzle together, completing the heat pressing of the air column heat sealing line and forming an independent air column cavity. Step 5: Cooling: The product from Step 4 is cooled by water cooling rollers. The temperature of the water inside the cooling rollers is between 0 and -35℃. Step Six: Horizontal Sealing, Spot Sealing and Heat Sealing: The lower film that has been vertically sealed and the upper film with the air nozzle that has been heat-sealed continue to move forward by the film-belt pressure roller in front of them, and enter the area below the horizontal sealing and spot sealing mold plate. There are two horizontal sealing lines in total, including the upper heat sealing line and the lower heat sealing line. The horizontal sealing mold plate is made of stainless steel. Step Seven: Collection: After the above steps are completed, a roller is set at the rear end of the bag making machine to roll up the processed air column bag into a cylindrical shape, and then the air column bag roll is removed. Step 8: Feeding the air column bag roll: Place the rolled air column bag roll onto the roller of the air column bag shearing machine, check the position, and manually pull the roll to the drive pressure roller to complete the feeding process; Step Nine: Folding: The air column bag roll after being fed is folded for the first time by an automatic shearing machine, folding one side. After the above folding, it enters the second folding and is folded to the specified width, completing the air column bag processing folding process. Step 10: Air Locking: The air column bag roll, which has been folded twice, is passed through a hot-pressing mold plate. The hot-pressing mold plate is a single strip shape, which heat-seals the air duct opening in the main inflation channel to lock in the air. Step 11: Sealing the edge: The air column bag with the air passage heat-sealed is automatically aligned and moved to the bottom of the side sealing mold. The side sealing mold consists of two parallel pressure strips to complete the side sealing heat sealing of the air column bag. Step 12: Cutting: Using sensors for displacement positioning, cut the air column bag in the middle of the air column strip near the edge seal, ensuring that the cut air column bags are of uniform size. Step 13: Packaging and Warehousing: The detector checks the number of cuts. Once a certain number is reached, the air column bags are manually packaged. After the appearance and internal quality are inspected and approved, the bags are packaged and put into storage.