Packaging bag and preparation process thereof

Abstract

The invention relates to the technical field of packaging bags, in particular to a packaging bag and a preparation process thereof. The method comprises the following steps: S1, stacking two layers of outer layer films, carrying out hot melting and pressing on corners, and inflating between the two layers of outer layer films to expand the two layers of outer layer films; s2, the inner side face of the inner layer film is rubbed and roughened, so that the inner side face of the inner layer film is softer; s3, the inner layer film and the outer layer film are pasted together, three corners of the inner layer film and the outer layer film are sewn, and the preparation device is sleeved with the inner layer film and the outer layer film; s4, the expanded outer layer film is pressed, and the expanded outer layer film is divided into a plurality of uniform outer packages through hot melting; s5, sewing a sealing paste on the inner side surface of the opening end of the inner-layer film; the packaging bag prepared through the packaging bag preparation technology comprises a plastic film, a plurality of air bags formed on the outer surface of the plastic film and two open edges which are fixed to the open end of the plastic film and correspond to each other up and down, the plastic film is the outer layer film, and the air bags are wrapped outside the outer layer film. The packaging bag with the buffering capacity can be manufactured.

Description

Technical Field

[0001] This invention relates to the field of packaging bag technology, and more specifically to a packaging bag and its manufacturing process. Background Technology

[0002] Packaging bags are bags used to package various goods, making it convenient to transport and store goods during production and distribution. They are widely used in daily life and industrial production. However, current packaging bags are simply sheet-like objects with limited thickness, which limits their ability to protect the objects they package. Therefore, under limited strength, they are insufficient to protect the packaged objects. This application proposes a packaging bag and its manufacturing process, which can produce packaging bags with cushioning capabilities to improve the protection of objects. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a packaging bag and its manufacturing process, which can produce a packaging bag with cushioning capacity to improve the protection of objects.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A packaging bag manufacturing process, the process comprising the following steps:

[0006] S1: Stack the two outer membrane layers and heat-melt the corners together, then inflate the two outer membrane layers with air between them to make them expand.

[0007] S2: Rub and roughen the inner surface of the inner membrane to make the inner surface of the inner membrane softer.

[0008] S3: Attach the inner membrane to the outer membrane together, sew three corners together, and then fit it onto the preparation device;

[0009] S4: Press the expanded outer film and separate it into multiple uniform outer layers by heat melting;

[0010] S5: Sew a sealing tape onto the inside of the opening end of the inner membrane.

[0011] The packaging bag produced by the packaging bag manufacturing process includes a plastic film, several air bladders formed on the outer surface of the plastic film, and two corresponding open edges fixed to the open end of the plastic film. The plastic film is the outer film, and the outer packaging is the air bladder.

[0012] The preparation device includes a support and a lead screw A rotatably connected to the left side of the support. A slider that slides on the support is connected to the lead screw A, and an inner liner plate is fixedly connected to the inner side of the slider.

[0013] The bracket is rotatably connected to a lead screw B on its right side. The threads on the upper and lower sides of the lead screw B are in opposite directions. Both the upper and lower sides of the lead screw B are connected to clamps, and thermoplastic molds are fixedly connected to the inner sides of both clamps. Attached Figure Description

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the packaging bag manufacturing process in this invention;

[0016] Figure 2 and Figure 3 This is a schematic diagram of the packaging bag structure in this invention;

[0017] Figure 4 This is a schematic diagram of the structure of the hook and loop fastener in this invention;

[0018] Figure 5 This is a schematic diagram of the preparation apparatus in this invention;

[0019] Figure 6 This is a schematic diagram of the inner lining plate in this invention;

[0020] Figure 7 This is a schematic diagram of the internal cavity structure in this invention;

[0021] Figure 8 This is a schematic diagram of the thermoplastic mold in this invention;

[0022] Figure 9 This is a schematic diagram of the clamping plate in this invention;

[0023] In the diagram: Plastic film 01; Airbag 02; Open edge 03; Cotton cloth 04; Velcro 05; Inner liner 06; Valve 07; Slider 08; Inner cavity 09; Support 10; Lead screw A11; Lead screw B12; Clamping plate 13; Thermoplastic mold 14; Heater 15. Detailed Implementation

[0024] Through observation Figure 1 An exemplary working process for the packaging bag manufacturing process can be obtained from the figure as follows:

[0025] A packaging bag manufacturing process, the process comprising the following steps:

[0026] S1: Stack the two outer membrane layers and heat-melt the corners together, then inflate the two outer membrane layers with air between them to make them expand.

[0027] S2: Rub and roughen the inner surface of the inner membrane to make the inner surface of the inner membrane softer.

[0028] S3: Attach the inner membrane to the outer membrane together, sew three corners together, and then fit it onto the preparation device;

[0029] S4: Press the expanded outer film and separate it into multiple uniform outer layers by heat melting;

[0030] S5: Sew a sealing tape onto the inside of the opening end of the inner membrane;

[0031] Through the above process, two outer films can be stacked, inflated, and pressed into multiple uniform outer packages. The outer packages increase cushioning, providing better protection for the object placed inside the inner film and preventing damage caused by vibration or impact. At the same time, the inner film can be roughened to make the inner surface of the inner film softer, providing better protection for the object after it is wrapped and preventing scratches on the object's surface. Finally, the outer film can be quickly closed with a sealing tape to seal the contents and facilitate the removal of the object inside.

[0032] Through observation Figures 1 to 9 An exemplary working process for improving buffering capacity, as shown in the figure, is as follows:

[0033] The packaging bag produced by the packaging bag manufacturing process includes a plastic film 01, several air bladders 02 formed on the outer surface of the plastic film 01, and two corresponding upper and lower openings 03 fixed to the open end of the plastic film 01. The plastic film 01 is the outer film, and the outer layer is the air bladders 02. By wrapping the object with the plastic film 01, the thickness can be increased by the air bladders 02 on the outer surface of the plastic film 01. When the air bladders 02 receive the force generated by vibration or impact, the air in the air bladders 02 and the elastic deformation of the air bladders 02 can be used to buffer the force, thereby reducing the force acting on the object and improving the protection of the object. At the same time, the two openings 03 make it easy for the user to grasp and open the two openings 03 to take out and put in the object. Furthermore, the plastic film 01 is made of polyurethane material, which can improve the strength of the air bladders 02 after compression.

[0034] Through observation Figures 1 to 9 An exemplary working process for improving comfort, as shown in the diagram, is as follows:

[0035] The inner wall of the plastic film 01 is fixedly connected to a cotton cloth 04, which is the inner layer film. The inner side of the cotton cloth 04 is roughened by friction, making the inner side of the cotton cloth 04 softer. This allows objects to come into contact with the soft cotton cloth 04. At the same time, the cotton cloth 04 can further increase the cushioning effect against external forces, and the roughened inner side of the cotton cloth 04 can also prevent scratches on objects.

[0036] Through observation Figures 1 to 9 An exemplary working process that facilitates picking and placing can be obtained from the diagram as follows:

[0037] The inner side of the opening 03 is sewn with a sealing sticker, which is a Velcro 05. By the mutual adhesion and opening of the Velcro 05, the opening end of the plastic film 01 can be closed and opened, enabling quick packaging and opening of objects, which is convenient for users. Furthermore, the opening 03 is made of polyester material, which can enhance the strength of the opening 03, thereby improving the strength of the packaging bag.

[0038] Through observation Figures 1 to 9 An exemplary working process for the plastic film 01 in the kit, as shown in the figure, is as follows:

[0039] The preparation device includes a support 10 and a lead screw A11 rotatably connected to the left side of the support 10. A slider 08 that slides on the support 10 is connected to the lead screw A11. An inner liner plate 06 is fixedly connected to the inner side of the slider 08. The lead screw A11 is driven to rotate by a reduction motor. After the cotton cloth 04 is pasted into the plastic film 01, the three sides of the plastic film 01 can be sewn together, so that one end of the plastic film 01 is open. Then, the plastic film 01 is put on the inner liner plate 06 through the open end, thereby realizing the quick fitting of the plastic film 01 and easy removal after processing.

[0040] Through observation Figures 1 to 9 An exemplary process for manufacturing airbag 02, as shown in the figure, is as follows:

[0041] The bracket 10 is rotatably connected to a lead screw B12 on its right side. The threads on the upper and lower sides of the lead screw B12 are in opposite directions. Both the upper and lower sides of the lead screw B12 are connected to clamping plates 13. The inner sides of the two clamping plates 13 are fixedly connected to thermoplastic molds 14. The outer end of the thermoplastic mold 14 is provided with a heater 15 connected to an external power source. After the plastic film 01 is fitted onto the inner liner plate 06, the rotation of the lead screw A11 drives the inner liner plate 06 to move between the two clamping plates 13. Then, another reduction motor drives the lead screw B12 to rotate, causing the lead screw B12 to drive the two clamping plates 13 to move closer to each other. This allows the two thermoplastic molds 14 to approach the plastic film 01 from the upper and lower sides. After the temperature of the thermoplastic molds 14 is raised by the heater 15, the two thermoplastic molds 14 can be used to squeeze the plastic film 01, dividing the plastic film 01 into multiple airbags 02, thereby completing the processing operation of the airbags 02.

[0042] Through observation Figures 1 to 9 An exemplary working process for internal cooling, as shown in the figure, is as follows:

[0043] The inner lining plate 06 has an inner cavity 09, and a valve 07 connected to the inner cavity 09 is provided on the inner lining plate 06. Cold water is introduced into the inner cavity 09 through the valve 07 to lower the temperature of the inner lining plate 06 and prevent the cotton cloth 04 inside the plastic film 01 from being damaged due to high temperature when the two thermoplastic molds 14 squeeze the plastic film 01.

Claims

1. A packaging bag manufacturing process, characterized in that, This process Includes the following steps: S1: Stack the two outer membrane layers and heat-melt the corners together, then inflate the two outer membrane layers with air between them to make them expand. S2: Rub and roughen the inner surface of the inner membrane to make the inner surface of the inner membrane softer. S3: Attach the inner membrane to the outer membrane together, sew three corners together, and then fit it onto the preparation device; S4: Press the expanded outer film and separate it into multiple uniform outer layers by heat melting; S5: Sew a sealing tape onto the inside of the opening end of the inner membrane.

2. The packaging bag prepared by the packaging bag preparation process according to claim 1, characterized in that: The packaging bag includes a plastic film (01), a plurality of airbags (02) formed on the outer surface of the plastic film (01), and two open edges (03) fixed to the open end of the plastic film (01) and corresponding to each other. The plastic film (01) is the outer film, and the outer packaging is the airbags (02).

3. The packaging bag according to claim 2, characterized in that: The inner wall of the plastic film (01) is fixedly connected with cotton cloth (04), and the cotton cloth (04) is the inner layer film.

4. The packaging bag according to claim 1, characterized in that: The inner side of the open edge (03) is sewn with a sealing tape, which is a Velcro (05).

5. The packaging bag according to claim 1, characterized in that: The open edge (03) is made of polyester material.

6. The packaging bag according to claim 2, characterized in that: The plastic film (01) is made of polyurethane material.

7. The packaging bag manufacturing process according to claim 1, characterized in that: The preparation device includes a support (10) and a lead screw A (11) rotatably connected to the left side of the support (10). A slider (08) that slides on the support (10) is connected to the lead screw A (11). An inner liner plate (06) is fixedly connected to the inner side of the slider (08).

8. The packaging bag manufacturing process according to claim 7, characterized in that: The bracket (10) is rotatably connected to a lead screw B (12) on the right side. The threads on the upper and lower sides of the lead screw B (12) are opposite. Both the upper and lower sides of the lead screw B (12) are connected to clamps (13), and thermoplastic molds (14) are fixedly connected to the inner sides of the two clamps (13).

9. The packaging bag manufacturing process according to claim 8, characterized in that: The thermoplastic mold (14) is provided with a heater (15) connected to an external power source at its outer end.

10. The packaging bag manufacturing process according to claim 9, characterized in that: The inner lining plate (06) has an inner cavity (09) inside, and a valve (07) communicating with the inner cavity (09) is provided on the inner lining plate (06).

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