Octagonal edge sealed side handle bag and manufacturing process thereof

Abstract

The application relates to the technical field of packaging bags, and particularly discloses an eight-side sealing side handle bag and a manufacturing process thereof. The eight-side sealing side handle bag comprises a bag body and a handle side; the bag body comprises a printing base film layer, a printing ink layer, a fifth adhesive layer, a middle layer, a sixth adhesive layer, a barrier layer, a seventh adhesive layer and a heat sealing layer which are sequentially arranged; the handle side comprises a high-strength handle layer, a first adhesive layer, a printing ink layer, a printing base film layer, a second adhesive layer, a middle layer, a third adhesive layer, a barrier layer, a fourth adhesive layer and a heat sealing layer which are sequentially arranged; a positioning release layer is arranged in the second adhesive layer, and the positioning release layer is connected with the printing base film layer. The packaging bag in the application is provided with a handle on the side, is soft in texture, does not cause hand fatigue when heavy objects are lifted, is not easy to fall off, and is convenient and fast.

Description

Technical Field

[0001] This application relates to the technical field of packaging bags, and in particular to an eight-side sealed side handle bag and its manufacturing process. Background Technology

[0002] Currently, eight-side seal packaging on the market typically uses either a handle at the top of the opening or no handle at all. While a handle-less design may simplify production and reduce costs, it has many disadvantages, especially in pet food applications, where it can be inconvenient to carry and result in a poor user experience. Using a handle at the top of the opening, while offering many conveniences, is not without its drawbacks. It increases costs, takes up more space, affects the overall stability of the packaging, limits the design of the packaging, and can feel uncomfortable when lifting heavy items. Summary of the Invention

[0003] To improve the portability of packaging bags, this application provides an eight-side sealed side handle bag and its manufacturing process.

[0004] Firstly, this application provides an eight-side sealed side handle bag, which adopts the following technical solution:

[0005] An eight-side sealed bag with a side handle includes a bag body and a handle side. The bag body includes, in sequence, a printed base film layer, a printed ink layer, a fifth adhesive layer, an intermediate layer, a sixth adhesive layer, a barrier layer, a seventh adhesive layer, and a heat-sealing layer. The handle side includes, in sequence, a high-strength handle layer, a first adhesive layer, a printed ink layer, a printed base film layer, a second adhesive layer, an intermediate layer, a third adhesive layer, a barrier layer, a fourth adhesive layer, and a heat-sealing layer. A positioning release layer is provided in the second adhesive layer, and the positioning release layer is connected to the printed base film layer.

[0006] By adopting the above technical solution, a handle is set on the side of the packaging bag. When it is necessary to lift, the handle is pulled open using the positioning release layer. The handle is formed by the high-strength handle layer, the first adhesive layer, the printing ink layer, and the printing base film layer. It is soft in texture, does not feel rough when lifting heavy objects, is not easy to fall off, and is convenient and quick.

[0007] In one specific implementation, the high-strength handle layer is a composite film composed of one or both of PET film and PA film; and the thickness of the high-strength handle layer is 25-60 micrometers.

[0008] By adopting the above technical solution, the high-strength handle layer made of PET film and PA film can not only lift heavy objects, but also has a good feel and is not uncomfortable to hold.

[0009] In one specific implementation, the raw materials for the first adhesive layer, the second adhesive layer, the third adhesive layer, the fourth adhesive layer, the fifth adhesive layer, the sixth adhesive layer, and the seventh adhesive layer are all polyurethane adhesives.

[0010] In one specific implementation, the printed base film layer is either a PET film or a PA film.

[0011] In one specific implementation, the raw material of the positioning release layer includes an organosilicon release agent.

[0012] By adopting the above technical solution, the silicone release agent not only has excellent release effect, but also has certain temperature resistance and compatibility.

[0013] In one specific implementation, the intermediate layer is either a PET film or a PA film.

[0014] In one specific implementation, the barrier layer is one of aluminum foil, aluminized film, or alumina coating.

[0015] In one specific implementation, the material of the heat-sealing layer includes heat-sealing PE.

[0016] Secondly, the manufacturing process of an eight-side sealed side handle bag provided in this application adopts the following technical solution:

[0017] A manufacturing process for an octagonal sealed side handle bag includes the following steps:

[0018] Printing: First, a layer of ink is printed on one side of the printing base film layer to form a printing ink layer; then, a release agent is applied to a portion of the other side of the printing base film layer to form a positioning release layer.

[0019] Composite high-strength handle layer: The high-strength handle layer is laminated onto the printing ink layer using an adhesive, and the adhesive forms the first adhesive layer, resulting in a handle composite film;

[0020] Die-cutting: The handle composite film is cured at high temperature, and then a positioning die-cutting process is carried out. Cutting lines and opening windows are made at the designated positions to make it have the function of a handle, and a semi-finished composite film A is obtained.

[0021] Composite intermediate layer: An intermediate layer is laminated onto the sidewall of the printed base film layer with the positioning release layer using an adhesive. The adhesive forms a second adhesive layer, resulting in a semi-finished composite film B.

[0022] Composite barrier layer: A barrier layer is laminated onto the middle layer of the semi-finished composite film B using an adhesive. The adhesive forms a third adhesive layer, resulting in the semi-finished composite film C.

[0023] Composite heat-sealing layer: On the barrier layer of the semi-finished composite film C, a heat-sealing layer is laminated using an adhesive, and the adhesive forms a fourth adhesive layer, resulting in the handle side;

[0024] Bag making: The handle side is first cured at high temperature, and then it is made into a bag with the bag body by a bag making machine to obtain an eight-side sealed side handle bag.

[0025] By adopting the above technical solution, ink is first printed on one side of the printing base film layer, and release agent is coated on the other side. Then, a high-strength handle layer is laminated on the printing ink layer, cured at high temperature, and die-cut to obtain a semi-finished composite film A. Then, an intermediate layer, a barrier layer, and a heat-sealing layer are laminated in sequence to obtain the handle side. Finally, the bag is made with the bag body by a bag making machine to obtain an eight-side sealed side handle bag.

[0026] In one specific implementation, the high-temperature curing temperature is 40-45°C and the time is 46-50 hours.

[0027] By adopting the above technical solution, the temperature and time of curing are further limited, thereby improving the performance of the resulting tote bag.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. In this application, a handle is provided on the side of the packaging bag. When it is necessary to lift, the handle is pulled open using the positioning release layer. The handle is formed by the high-strength handle layer, the first adhesive layer, the printing ink layer, and the printing base film layer. It is soft in texture, does not feel rough when lifting heavy objects, is not easy to fall off, and is convenient and quick.

[0030] 2. The high-strength handle layer made of PET film and PA film in this application can not only lift heavy objects, but also has a good feel and is not uncomfortable to hold;

[0031] 3. The method in this application first prints ink on one side of the printing base film layer and coats the other side with a release agent. Then, a high-strength handle layer is laminated on the printing ink layer, cured at high temperature, and die-cut to obtain a semi-finished composite film A. Then, an intermediate layer, a barrier layer, and a heat-sealing layer are laminated in sequence to obtain the handle side. Finally, the bag is made with the bag body by a bag making machine to obtain an eight-side sealed side handle bag. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the overall structure of the tote bag in Embodiment 1 in this application.

[0033] Figure 2 This is a cross-sectional schematic diagram used in this application to illustrate the bag body in Embodiment 1.

[0034] Figure 3This is a cross-sectional schematic diagram used in this application to illustrate the side of the handle in Embodiment 1.

[0035] Figure 4 This is a cross-sectional schematic diagram used in this application to illustrate the side of the handle in Embodiment 2.

[0036] Figure 5 This is a cross-sectional schematic diagram used in this application to illustrate the side of the handle in Embodiment 3.

[0037] Explanation of reference numerals in the attached drawings: 1. Bag body; 11. Printed base film layer; 12. Printed ink layer; 13. Fifth adhesive layer; 14. Intermediate layer; 15. Sixth adhesive layer; 16. Barrier layer; 17. Seventh adhesive layer; 18. Heat-sealing layer; 2. Handle side; 21. High-strength handle layer; 22. First adhesive layer; 23. Second adhesive layer; 231. Positioning release layer; 24. Third adhesive layer; 25. Fourth adhesive layer. Detailed Implementation

[0038] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0039] Example 1

[0040] Example 1 discloses an octagonal sealed side handle bag.

[0041] Reference Figure 1 and Figure 2 An eight-side sealed side handle bag includes a bag body 1 and a handle side 2 connected to the bag body 1; the bag body 1 includes a printed base film layer 11, a printed ink layer 12, a fifth adhesive layer 13, an intermediate layer 14, a sixth adhesive layer 15, a barrier layer 16, a seventh adhesive layer 17, and a heat-sealing layer 18 arranged sequentially.

[0042] Reference Figure 3 The handle side 2 includes a high-strength handle layer 21, a first adhesive layer 22, a printing ink layer 12, a printing base film layer 11, a second adhesive layer 23, an intermediate layer 14, a third adhesive layer 24, a barrier layer 16, a fourth adhesive layer 25, and a heat-sealing layer 18 arranged sequentially. A positioning release layer 231 is provided in the second adhesive layer 23, and the positioning release layer 231 is connected to the printing base film layer 11. The high-strength handle layer 21 is a PET film with a thickness of 25 micrometers. The printing base film layer 11 is a PET film. The intermediate layer 14 is a PET film. The barrier layer 16 can be one of aluminum foil, aluminized film, or alumina coating. In this embodiment, it is aluminum foil. The heat-sealing layer 18 is heat-sealed PE.

[0043] The implementation principle of Example 1 is as follows: Before normal use, the handle is pulled open using the positioning release layer 231. The high-strength handle layer 21, the first adhesive layer 22, the printing ink layer 12, and the printing base film layer 11 form the handle. The handle is soft, so it is not uncomfortable to lift heavy objects, and it is not easy to fall off, making it convenient and quick.

[0044] Example 1 also discloses a manufacturing process for an octagonal sealed side handle bag.

[0045] A manufacturing process for an octagonal sealed side handle bag includes the following steps:

[0046] Printing: First, a layer of ink is printed on one side of the printing base film layer 11 using a printing press to form a printing ink layer 12; then, a release agent is applied to a portion of the other side of the printing base film layer 11 to form a positioning release layer 231.

[0047] High-strength handle layer 21: The high-strength handle layer 21 is laminated onto the printing ink layer 12 using a dry lamination process with polyurethane adhesive. The polyurethane adhesive forms the first adhesive layer 22, resulting in a handle composite film.

[0048] Die-cutting: The handle composite film is cured at 42.5℃ for 48 hours, and then the positioning die-cutting process is carried out. Cutting lines and opening windows are made at the designated positions to make it have the handle function, and the semi-finished composite film A is obtained.

[0049] Composite intermediate layer 14: On the side wall of the printed base film layer 11 with positioning release layer 231, an intermediate layer 14 is laminated using a dry lamination process with polyurethane adhesive. The polyurethane adhesive forms a second adhesive layer 23, and the positioning release layer 231 is located in the second adhesive layer 23, to obtain a semi-finished composite film B.

[0050] Composite barrier layer 16: On the middle layer 14 of the semi-finished composite film B, a barrier layer 16 is laminated with polyurethane adhesive using a dry lamination process. The polyurethane adhesive forms a third adhesive layer 24, resulting in the semi-finished composite film C.

[0051] Composite heat-sealing layer 18: On the barrier layer 16 of the semi-finished composite film C, a heat-sealing layer 18 is laminated using a dry lamination process with polyurethane adhesive. The polyurethane adhesive forms a fourth adhesive layer 25, resulting in the handle side 2.

[0052] Bag body 1 preparation: First, a layer of ink is printed on one side of the printing base film layer 11 using a printing press to form a printing ink layer 12; then, an intermediate layer 14 is laminated onto the printing ink layer 12 using a dry lamination process with polyurethane adhesive, forming a fifth adhesive layer 13; then, a barrier layer 16 is laminated onto the intermediate layer 14 using a dry lamination process with polyurethane adhesive, forming a sixth adhesive layer 15; finally, a heat-sealing layer 18 is laminated onto the barrier layer 16 using a dry lamination process with polyurethane adhesive, forming a seventh adhesive layer 17, thus obtaining bag body 1;

[0053] Bag making: First, cure the handle side 2 at 42.5℃ for 48 hours, and then make a bag with the bag body 1 through a bag making machine to obtain an eight-side sealed side handle bag.

[0054] Example 2

[0055] The difference between Example 2 and Example 1 is that, referring to... Figure 1 and Figure 4 An eight-side sealed side handle bag includes a bag body 1 and a handle side 2 connected to the bag body 1; the bag body 1 includes a printed base film layer 11, a printed ink layer 12, a fifth adhesive layer 13, an intermediate layer 14, a sixth adhesive layer 15, a barrier layer 16, a seventh adhesive layer 17, and a heat-sealing layer 18 arranged sequentially; the handle side 2 includes a high-strength handle layer 21, a first adhesive layer 22, a printed ink layer 12, a printed base film layer 11, a second adhesive layer 23, an intermediate layer 14, and a third adhesive layer 18 arranged sequentially. The adhesive layer 24, barrier layer 16, fourth adhesive layer 25, and heat-sealing layer 18 are included. A positioning release layer 231 is provided in the second adhesive layer 23, which is connected to the printed base film layer 11. The high-strength handle layer 21 is a PA film with a thickness of 25 micrometers. The printed base film layer 11 is a PA film. The intermediate layer 14 is a PA film. The barrier layer 16 can be one of aluminum foil, aluminized film, or alumina coating. In this embodiment, it is aluminum foil. The heat-sealing layer 18 is heat-sealed PE. The remaining steps are consistent with those in Example 1.

[0056] Example 3

[0057] The difference between Example 3 and Example 1 is that, referring to... Figure 1 and Figure 5An eight-side sealed side-handle bag includes a bag body 1 and a handle side 2 connected to the bag body 1; the bag body 1 includes a printed base film layer 11, a printed ink layer 12, a fifth adhesive layer 13, an intermediate layer 14, a sixth adhesive layer 15, a barrier layer 16, a seventh adhesive layer 17, and a heat-sealing layer 18 arranged sequentially; the handle side 2 includes a high-strength handle layer 21, a first adhesive layer 22, a printed ink layer 12, a printed base film layer 11, a second adhesive layer 23, an intermediate layer 14, and a third adhesive layer 24, arranged sequentially. 4. Barrier layer 16, fourth adhesive layer 25, heat-sealing layer 18; a positioning release layer 231 is provided in the second adhesive layer 23, and the positioning release layer 231 is connected to the printed base film layer 11; the high-strength handle layer 21 is a PET / PA composite film with a thickness of 60 micrometers; the printed base film layer 11 is a PA film; the intermediate layer 14 is a PA film; the barrier layer 16 can be one of aluminum foil, aluminized film, or alumina coating, and in this embodiment it is aluminum foil; the heat-sealing layer 18 is heat-sealed PE; the remaining steps are consistent with Example 1.

[0058] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. An octagonal sealed side handle bag, characterized in that: The bag includes a body (1) and a handle side (2); the bag body (1) includes a printed base film layer (11), a printed ink layer (12), a fifth adhesive layer (13), an intermediate layer (14), a sixth adhesive layer (15), a barrier layer (16), a seventh adhesive layer (17), and a heat-sealing layer (18) arranged in sequence; the handle side (2) includes a high-strength handle layer (21), a first adhesive layer (22), a printed ink layer (12), a printed base film layer (11), a second adhesive layer (23), an intermediate layer (14), a third adhesive layer (24), a barrier layer (16), a fourth adhesive layer (25), and a heat-sealing layer (18) arranged in sequence; a positioning release layer (231) is provided in the second adhesive layer (23), and the positioning release layer (231) is connected to the printed base film layer (11); The manufacturing process of the octagonal sealed side handle bag Includes the following steps: Printing: First, a layer of ink is printed on one side of the printing base film layer (11) to form a printing ink layer (12); then, a release agent is applied to a portion of the other side of the printing base film layer (11) to form a positioning release layer (231); Composite high-strength handle layer (21): The high-strength handle layer (21) is laminated onto the printing ink layer (12) using an adhesive, and the adhesive forms the first adhesive layer (22) to obtain a handle composite film; Die-cutting: The handle composite film is cured at high temperature, and then a positioning die-cutting process is carried out. Cut lines and windows are made at the designated positions to make it have the function of a handle, and a semi-finished composite film A is obtained. Composite intermediate layer (14): An intermediate layer (14) is laminated onto the sidewall of the printed base film layer (11) with a positioning release layer (231) using an adhesive. The adhesive forms a second adhesive layer (23) to obtain a semi-finished composite film B. Composite barrier layer (16): On the middle layer (14) of the semi-finished composite film B, a barrier layer (16) is laminated with an adhesive, and the adhesive forms a third adhesive layer (24) to obtain the semi-finished composite film C. Composite heat-sealing layer (18): On the barrier layer (16) of the semi-finished composite film C, a heat-sealing layer (18) is laminated with an adhesive, and the adhesive forms a fourth adhesive layer (25) to obtain the handle side (2). Bag making: The handle side (2) is first cured at high temperature, and then it is made into a bag with the bag body (1) by a bag making machine to obtain an eight-side sealed handle bag.

2. The eight-sided sealed side handle bag according to claim 1, characterized in that: The high-strength handle layer (21) is a composite film composed of one or both of PET film and PA film; and the thickness of the high-strength handle layer (21) is 25-60 micrometers.

3. The eight-sided sealed side handle bag according to claim 1, characterized in that: The first adhesive layer (22), the second adhesive layer (23), the third adhesive layer (24), the fourth adhesive layer (25), the fifth adhesive layer (13), the sixth adhesive layer (15), and the seventh adhesive layer (17) are all made of polyurethane adhesive.

4. The eight-sided sealed side handle bag according to claim 1, characterized in that: The printed base film layer (11) is one of PET film or PA film.

5. The eight-sided sealed side handle bag according to claim 1, characterized in that: The raw material of the positioning release layer (231) includes an organosilicon release agent.

6. The eight-sided sealed side handle bag according to claim 1, characterized in that: The intermediate layer (14) is either a PET film or a PA film.

7. An eight-sided sealed side-handle bag according to claim 1, characterized in that: The barrier layer (16) is one of aluminum foil, aluminized film, or alumina coating.

8. An eight-sided sealed side-handle bag according to claim 1, characterized in that: The heat-sealing layer (18) is made of heat-sealing PE.

9. An eight-sided sealed side-handle bag according to claim 1, characterized in that: The high-temperature curing temperature is 40-45℃, and the time is 46-50h.

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