Paper-plastic film tearing line mold and paper-plastic film buffer packaging material

Abstract

The utility model discloses a paper-plastic film tearing line mould and paper-plastic film buffer wrappage, the paper-plastic film tearing line mould comprises a cutter body, one side of the cutter body is provided with a first cutter tooth part, a second cutter tooth part and a third cutter tooth part, the other side of the cutter body is provided with a plurality of U-shaped mounting grooves, the first cutter tooth part comprises a plurality of first cutter teeth, the second cutter tooth part comprises a plurality of second cutter teeth, and the third cutter tooth part comprises a plurality of third cutter teeth. The first cutter tooth part comprises a plurality of first cutter teeth, the tooth width of each first cutter tooth is not larger than the tooth pitch of every two adjacent first cutter teeth, the second cutter tooth part comprises a plurality of second cutter teeth, the tooth height of each second cutter tooth is larger than that of each first cutter tooth, the third cutter tooth part comprises a plurality of third cutter teeth, the tooth width of each third cutter tooth is larger than the tooth pitch of every two adjacent third cutter teeth, and the tooth height of each second cutter tooth is larger than that of each third cutter tooth. According to the paper-plastic film tearing line mold, the tearing line is formed in the process of manufacturing the paper-plastic film buffer packing material, the risk that the paper-plastic film buffer packing material is broken in the production and use processes can be reduced, it can be guaranteed that the paper-plastic film buffer packing material is conveniently broken in the use process, and an air chamber is not prone to being broken after the paper-plastic film buffer packing material is inflated.

Description

A paper-plastic film tear line mold and a paper-plastic film cushioning packaging material Technical Field

[0001] This utility model relates to a paper-plastic film tear line mold and a paper-plastic film cushioning packaging. Background Technology

[0002] In the logistics packaging industry, traditional plastic packaging causes significant environmental pollution. More and more cushioning packaging made of kraft paper and biodegradable plastic is now being used to replace pure plastic cushioning packaging. Kraft paper and biodegradable plastic packaging material is a multi-layer composite packaging material (referred to as "paper-plastic film") made by composite process of kraft paper and biodegradable plastic film. Paper-plastic film solves the problems of low strength and low processability of pure biodegradable plastic, and at the same time reduces the use of plastic to a certain extent.

[0003] In the production and use of paper-plastic film cushioning packaging, it is necessary to cut the paper-plastic film cushioning packaging into different lengths, while ensuring that the paper-plastic film cushioning packaging can be easily torn during use (by hand or by equipment) without material damage. In the production process of existing paper-plastic film cushioning packaging, a die-cut mold is used to form tear lines on the paper-plastic film. During use, the paper-plastic film cushioning packaging needs to be inflated to form a three-dimensional cushioning packaging, which is then used to package the items.

[0004] The existing die-cutting molds generally produce tear lines on paper-plastic film cushioning packaging with poor forming quality, which makes the paper-plastic film cushioning packaging easy to break or tear during production. Moreover, the packaging strength of the paper-plastic film cushioning packaging cannot be effectively guaranteed during use.

[0005] Therefore, overcoming the aforementioned technical deficiencies is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] The purpose of this invention is to provide a paper-plastic film tear line mold and a paper-plastic film cushioning packaging.

[0007] According to one aspect of the present invention, a paper-plastic film tear line mold is provided, comprising a blade body.

[0008] The blade body has a first cutting tooth, a second cutting tooth, and a third cutting tooth on one side. The second cutting tooth is located between the first cutting tooth and the end of the blade body, and the third cutting tooth is located in the area on one side of the blade body other than the first and second cutting tooth sections. The other side of the blade body has multiple U-shaped mounting grooves.

[0009] The first cutting tooth section includes multiple first cutting teeth arranged in parallel. The tooth width of the first cutting tooth is not greater than the tooth pitch between two adjacent first cutting teeth.

[0010] The second cutting tooth section includes multiple sequentially connected second cutting teeth, the tooth height of the second cutting teeth being greater than the tooth height of the first cutting teeth.

[0011] The third cutting tooth section includes multiple parallel third cutting teeth. The tooth width of the third cutting tooth is greater than the tooth pitch of two adjacent third cutting teeth, and the tooth height of the second cutting tooth is greater than the tooth height of the third cutting tooth.

[0012] This utility model discloses a paper-plastic film tear line mold, which is installed on a device for manufacturing paper-plastic film cushioning packaging via a U-shaped mounting groove. During the manufacturing process, the cutter body forms tear lines on the paper-plastic film. Because the tooth width of the first cutter tooth is no greater than the tooth spacing between two adjacent first cutter teeth, when the first cutter tooth forms the first tear line on the paper-plastic film, it can ensure that the paper-plastic film is cut through without being severed. This makes the paper-plastic film cushioning packaging less prone to tearing and separation during production, reducing the risk of breakage during production and use. The risk of breakage during the process is mitigated because the second cutter teeth are sequentially connected, and the tooth height of the second cutter tooth is greater than that of the first cutter tooth, and the tooth height of the second cutter tooth is greater than that of the third cutter tooth. Therefore, the corresponding position between the first tear line and the end of the paper-plastic film on the second cutter tooth will completely cut the paper-plastic film (this position can be regarded as the second tear line). When the paper-plastic film cushioning packaging is fully inflated, this position is disconnected, and the stress in the air chamber at this position is released. When the fully inflated paper-plastic film cushioning packaging is pulled, the air chamber in this area will not be torn, thus ensuring the integrity of the paper-plastic film cushioning packaging. The inflation effect is better because the third cutting tooth is located on one side of the blade body, outside the first and second cutting teeth, and the tooth width of the third cutting tooth is greater than the tooth pitch of two adjacent third cutting teeth. Therefore, when the third cutting tooth forms the third tear line in the area outside the first and second tear lines of the paper-plastic film, it can ensure that the paper-plastic film is cut through by the third cutting tooth without being cut off. At the same time, it can also ensure that the paper-plastic film cushioning packaging can be easily torn during use. When it is necessary to tear the paper-plastic film cushioning packaging during use, the paper-plastic film cushioning packaging will move along the second tear line. The first, third, and fourth tear lines are easily broken in sequence. Using the paper-plastic film tear line mold of this utility model, the tear lines formed during the production of paper-plastic film cushioning packaging can reduce the risk of breakage during production and use, ensure that the paper-plastic film cushioning packaging is easy to break during use, guarantee the packaging strength during use, and prevent the air chamber of the paper-plastic film cushioning packaging from being easily broken after inflation. It can also accommodate both manual and equipment tearing.

[0013] In some embodiments, the tooth width of the first cutting tooth can be 2.5 mm, the tooth width of the first cutting tooth is equal to the tooth pitch of two adjacent first cutting teeth, the tooth height of the first cutting tooth can be 5 mm, and the distance between the first cutting tooth portion and the third cutting tooth portion can be 1 mm. Thus, the 5 mm tooth height of the first cutting tooth ensures that the first cutting tooth portion can form the first tear line on the paper-plastic film. The 2.5 mm tooth width and 2.5 mm tooth pitch of the first cutting tooth portion ensure that the paper-plastic film cushioning packaging is not easily torn apart during production, reducing the risk of breakage during production and use. The 1 mm distance between the first and third cutting teeth portion makes it easier for the connection between the first and third tear lines of the paper-plastic film cushioning packaging to break during use.

[0014] In some embodiments, the two cutting edges of the first cutter intersect at an angle of 60 degrees. This design ensures that the first cutter can cut through the paper-plastic film to form a first tear line.

[0015] In some embodiments, there can be two second cutting teeth, each located on either side of the first cutting tooth, symmetrically arranged about the center line of the blade body. Thus, the two second cutting teeth, symmetrically arranged about the center line of the blade body, can simultaneously and completely cut the paper-plastic film at two symmetrical positions on two parallel paper-plastic film cushioning packages (these positions can be considered as second tear lines), improving processing efficiency. When the paper-plastic film cushioning package needs to be broken during use, it will be easily broken starting from the second tear line, proceeding along the second tear line, the third tear line, and then the first tear line.

[0016] In some embodiments, the second cutting tooth can have a tooth width of 4.2 mm, a tooth height of 6 mm, and five cutting teeth. The distance between the second and third cutting teeth can be 1 mm. Thus, the second cutting tooth with a tooth width of 4.2 mm and a tooth height of 6 mm ensures that the second cutting tooth can completely cut the paper-plastic film at the corresponding position (this position can be considered the second tear line). The sequential connection of the five second cutting teeth ensures the length of the paper-plastic film that is completely cut, thereby ensuring that the paper-plastic film cushioning packaging can be easily torn during use. The 1 mm distance between the second and third cutting teeth also makes it easy to break the connection between the second and third tear lines during use.

[0017] In some embodiments, the two cutting edges of the second blade intersect at a 90-degree angle. This design ensures that the second blade can completely cut the corresponding position on the paper-plastic film.

[0018] In some embodiments, the width of the third cutting tooth can be 4mm, the tooth spacing between two adjacent third cutting teeth can be 1mm, and the tooth height of the third cutting tooth 131 can be 5mm. Thus, the 5mm tooth height of the third cutting tooth ensures that the third cutting tooth portion can form a third tear line on the paper-plastic film. The 4mm tooth width and 1mm tooth spacing distribution of the third cutting tooth portion ensures that the paper-plastic film is cut through by the third cutting tooth portion without being severed, while also ensuring that the paper-plastic film cushioning packaging can be easily torn during use.

[0019] In some implementations, the two cutting edges of the third cutter intersect at an angle of 60 degrees. This design ensures that the third cutter can cut through the paper-plastic film to form a third tear line.

[0020] In some implementations, the first, second, and third cutting teeth can all be single-edged. This single-edged design allows for thinner dimensions of the first, second, and third cutting teeth, reducing cutting resistance. Furthermore, the single-edged design maintains a consistent cutting angle, preventing cutting deviation and making the cutting of the paper-plastic film more stable.

[0021] In some embodiments, the first cutting tooth is located in the middle of the blade body, and there can be two first cutting teeth. The distance between the two first cutting teeth is twice the tooth width of the first cutting tooth, and the two first cutting teeth are symmetrically arranged about the center line of the blade body. Therefore, the first cutting teeth can form a first tear line in the middle of the paper-plastic film. The symmetrical arrangement of the two first cutting teeth about the center line of the blade body and the distance between them being twice the tooth width of the first cutting tooth allows for the simultaneous formation of a first tear line on two parallel paper-plastic film cushioning packages, improving processing efficiency.

[0022] According to one aspect of the present invention, a paper-plastic film cushioning packaging is also provided, which is made by forming tear lines on the paper-plastic film cushioning packaging using a paper-plastic film tear line mold.

[0023] This invention relates to a paper-plastic film cushioning packaging material made from a paper-plastic film tearing die. This reduces the risk of breakage during production and use, while ensuring the packaging is easily torn during use. The packaging strength is also guaranteed, and the inflated air chamber is not easily ruptured. ， It can be used for both manual and machine-assisted breakage.

[0024] According to one aspect of the present invention, a paper-plastic film cushioning packaging material is also provided, comprising a paper-plastic film cushioning packaging material body, wherein the film cushioning packaging material body is provided with a first tear line, a second tear line and a third tear line, the first tear line, the second tear line and the third tear line are distributed on a straight line from one side to the other side of the film cushioning packaging material body, the straight line containing the first tear line, the second tear line is located between the first tear line and one side of the film cushioning packaging material body, and the third tear line is distributed in the area other than the first tear line and the second tear line on the straight line from one side to the other side of the film cushioning packaging material body. The first tear line includes first perforations arranged at intervals, the second tear line is completely broken, and the third tear line includes second perforations arranged at intervals. The length of the first perforation is not greater than the distance between two adjacent first perforations, and the length of the second perforation is greater than the distance between two adjacent second perforations.

[0025] The paper-plastic film cushioning packaging of this invention features a first tear line. Because the length of the first perforation is no greater than the distance between two adjacent first perforations, the first tear line ensures that the paper-plastic film cushioning packaging is not easily broken during production, reducing the risk of breakage during production and use. Since the second tear line is completely open, when the paper-plastic film cushioning packaging is fully inflated, the stress in the air chamber at this location is released. Therefore, when the fully inflated paper-plastic film cushioning packaging is pulled, the air chamber in this area will not rupture, thus ensuring the paper-plastic film cushioning... The overall inflation effect of the packaging will be better. Since the third tear line is distributed in the area other than the first tear line and the second tear line on the straight line from one side to the other of the film cushioning packaging body, and the length of the second perforation is greater than the distance between two adjacent second perforations, the third tear line can ensure that the paper-plastic film cushioning packaging can be easily broken during use. When it is necessary to break the paper-plastic film cushioning packaging during use, the paper-plastic film cushioning packaging will be easily broken along the second tear line, the third tear line, and the first tear line in sequence. It also supports both manual breaking and equipment breaking. Attached Figure Description

[0026] Figure 1 is a structural schematic diagram of a paper-plastic film tear line mold according to one embodiment of the present invention;

[0027] Figure 2 is a structural schematic diagram of the paper-plastic film tear line mold shown in Figure 1 from another perspective;

[0028] Figure 3 is an enlarged structural schematic diagram of point A in the paper-plastic film tear line mold shown in Figure 2;

[0029] Figure 4 is an enlarged structural schematic diagram of point B in the paper-plastic film tear line mold shown in Figure 2;

[0030] Figure 5 is an enlarged structural schematic diagram of point C in the paper-plastic film tear line mold shown in Figure 2;

[0031] Figure 6 is a schematic diagram of the structure along the DD direction in the paper-plastic film tear line mold shown in Figure 2;

[0032] Figure 7 is a structural schematic diagram of a paper-plastic film tear line mold according to another embodiment of the present invention;

[0033] Figure 8 is a structural schematic diagram of a paper-plastic film cushioning packaging according to one embodiment of the present invention. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0035] In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated.

[0036] Example 1:

[0037] Figures 1 to 6 schematically show the structure of a paper-plastic film tearing line mold according to one embodiment of the present invention.

[0038] Referring to Figures 1 to 6, a paper-plastic film tearing line mold includes a blade body 1.

[0039] In this embodiment, the blade body 1 is made entirely of high-speed steel, which is more wear-resistant, has good toughness, and can be used repeatedly over a long period of time. In other embodiments, the blade body 1 may also be made of other hard, wear-resistant, and tough materials as needed.

[0040] Referring to Figure 2, in this embodiment, the total length L1 of the blade 1 is 840 mm. In other embodiments, the total length of the blade 1 can be adjusted according to the requirements for installing the blade 1 on the equipment used to manufacture paper-plastic film cushioning packaging.

[0041] Referring to Figures 1 and 2, a first cutting tooth 11, a second cutting tooth 12, and a third cutting tooth 13 are formed on one side of the blade body 1 (the lower side of the blade body 1 in Figure 2). The first cutting tooth 11 is located in the middle of the blade body 1, the second cutting tooth 12 is located between the first cutting tooth 11 and the end of the blade body 1, and the third cutting tooth 13 is located in the area on one side of the blade body 1 other than the first cutting tooth 11 and the second cutting tooth 12. That is, the area on one side of the blade body 1 other than the first cutting tooth 11 and the second cutting tooth 12 is the third cutting tooth 13. The first cutting tooth 11 can form a first tear line in the middle of the paper-plastic film. The second cutting tooth 12 will completely cut the paper-plastic film at the corresponding position between the middle and the end of the paper-plastic film (this position can be regarded as the second tear line). The third cutting tooth 13 forms a third tear line in the area of ​​the paper-plastic film other than the first tear line and the second tear line.

[0042] Referring to Figures 1 to 3, the first cutting tooth portion 11 includes a plurality of parallel first cutting teeth 111. The tooth width of the first cutting tooth 111 is not greater than the tooth pitch of two adjacent first cutting teeth 111 in the first cutting tooth portion 11. In this embodiment, the first cutting tooth portion 11 includes five parallel first cutting teeth 111. The tooth width of the first cutting tooth 111 is equal to the tooth pitch of two adjacent first cutting teeth 111 in the first cutting tooth portion 11. Specifically, the tooth width L7 of the first cutting tooth 111 is 2.5 mm, and the tooth height of the first cutting tooth 111 is... L8 is 5mm, the tooth pitch L6 between two adjacent first teeth 111 in the first toothed part 11 is 2.5mm, and the tooth height of the first tooth 111 is 5mm. This ensures that the first toothed part 11 can form the first tear line in the middle position of the paper-plastic film. The first toothed part 11 adopts a tooth width of 2.5mm and a tooth pitch of 2.5mm, thereby ensuring that the middle position of the paper-plastic film cushioning packaging is not easy to break during production and use, and reducing the risk of the middle position of the paper-plastic film cushioning packaging breaking during use.

[0043] Referring to Figure 3, the two cutting edges of the first cutting tooth 111 intersect, that is, the free end of the first cutting tooth 111 is pointed. The included angle α1 of the two cutting edges of the first cutting tooth 111 is 60 degrees, and the included angle α2 of the two adjacent cutting edges on two adjacent first cutting teeth 111 is also 60 degrees. This design of the first cutting tooth 111 ensures that the first cutting tooth 111 can cut through the paper-plastic film to form the first tear line.

[0044] Referring to Figures 1 to 3, in this embodiment, there are two first cutting teeth 11, which are symmetrically arranged about the center line 100 of the blade body 1. In this embodiment, the distance between the two first cutting teeth 11 is twice the tooth width of the first cutting tooth 111. Specifically, the distance L5 between the two first cutting teeth 11 is twice the tooth width L7 of the first cutting tooth 111, that is, the distance L5 between the two first cutting teeth 11 is 5mm. The length L2 of the two first cutting teeth 11 is 25mm. The two first cutting teeth 11 are symmetrically arranged about the center line 100 of the blade body 1 and the distance is twice the tooth width of the first cutting tooth 111. In this way, the first tear line can be formed on two parallel paper-plastic film cushioning packaging materials at the same time, which improves the processing efficiency.

[0045] Referring to Figure 2, the distance between the leftmost first tooth 111 of the first tooth section 11 on the left and the rightmost third tooth of the adjacent third tooth section 13 is 1 mm, and the distance between the rightmost first tooth 111 of the first tooth section 11 on the right and the leftmost third tooth of the adjacent third tooth section 13 is 1 mm. The distance between the first tooth section 11 and the third tooth section 13 is 1 mm, which makes it easier for the connection between the first tear line formed by the first tooth section 11 and the third tear line formed by the third tooth section 13 on the paper-plastic film cushioning packaging to be broken during use.

[0046] Referring to Figures 1, 2, and 4, the second cutting tooth portion 12 includes a plurality of sequentially connected second cutting teeth 121. The tooth height of the second cutting teeth 121 is greater than the tooth height of the first cutting teeth 111. In this embodiment, the second cutting tooth portion 12 includes five sequentially connected second cutting teeth 121. Specifically, the tooth width of the second cutting teeth 121 is 4.2 mm, the total width L3 of the five sequentially connected second cutting teeth 121 is 4.2 mm * 5 = 21 mm, and the tooth height L9 of the second cutting teeth 121 is 6 mm. The second cutting teeth 121 with a tooth width of 4.2 mm and a tooth height of 6 mm ensure that the second cutting tooth portion 12 can completely cut the paper-plastic film at the corresponding position on the paper-plastic film (this position can be regarded as the second tear line). The sequential connection of the five second cutting teeth 121 can ensure the length of the paper-plastic film that is completely cut off, thereby ensuring that the paper-plastic film cushioning packaging can be easily torn during use.

[0047] Referring to Figure 4, the two cutting edges of the second cutter 121 intersect, that is, the free end of the second cutter 121 is pointed. The included angle α3 of the two cutting edges of the second cutter 121 is 90 degrees, and the included angle α4 of the two adjacent cutting edges on two adjacent second cutters 121 is also 90 degrees. This design of the second cutter 121 ensures that the second cutter 121 can completely cut the corresponding position on the paper-plastic film.

[0048] Referring to Figures 1 and 2, in this embodiment, there are two second cutting teeth 12, which are located on both sides of the first cutting tooth 11. The two second cutting teeth 12 are symmetrically arranged about the center line 100 of the blade body 1. Referring to Figure 2, the distance L4 between the second cutting tooth 12 on the left and the center line 100 of the blade body 1 is 201mm, and the distance between the second cutting tooth 12 on the right and the center line 100 of the blade body 1 is also 201mm. The two second cutting teeth 12 symmetrically arranged about the center line 100 of the blade body 1 can simultaneously and completely cut the paper-plastic film at two symmetrical positions on two parallel paper-plastic film cushioning packages (this position can be regarded as the second tear line), improving processing efficiency. When it is necessary to break the paper-plastic film cushioning package during use, the paper-plastic film cushioning package will be easily broken starting from the second tear line, along the second tear line, the third tear line, and the first tear line.

[0049] Referring to Figure 4, the distance L10 between the second tooth 12 and the third tooth 13 on the left is 1mm, and the distance between the second tooth 12 and the third tooth 13 on the right is also 1mm. The 1mm distance between the second tooth 12 and the third tooth 13 makes it easier for the connection between the second tear line formed by the second tooth 12 and the third tear line formed by the third tooth 13 on the paper-plastic film cushioning packaging to be broken during use.

[0050] Referring to Figures 1, 2, and 5, the third cutting tooth section 13 includes multiple parallel third cutting teeth 131. The tooth width of the third cutting tooth 131 is greater than the tooth pitch of two adjacent third cutting teeth 131, and the tooth height of the second cutting tooth 121 is greater than the tooth height of the third cutting tooth 131. Specifically, the tooth width L11 of the third cutting tooth 131 is 4mm, the tooth pitch L13 of two adjacent third cutting teeth 131 is 1mm, the tooth height L12 of the third cutting tooth 131 is 5mm, and the tooth height of the third cutting tooth 131 is the same as the tooth height of the first cutting tooth 111. The third cutting tooth 131 with a tooth height of 5mm ensures that the third cutting tooth section 13 can form a third tear line on the paper-plastic film. The distribution of the third cutting tooth section 13 with a tooth width of 4mm and a tooth pitch of 1mm can ensure that the paper-plastic film is cut through by the third cutting tooth section 13 without being cut off, while also ensuring that the paper-plastic film cushioning packaging can be easily torn during use.

[0051] Referring to Figure 5, the two cutting edges of the third cutter 131 intersect, that is, the free end of the third cutter 131 is pointed. The included angle α5 of the two cutting edges of the third cutter 131 is 60 degrees, and the included angle α6 of the two adjacent cutting edges on two adjacent third cutters 131 is also 60 degrees. This design of the third cutter 131 ensures that the third cutter 131 can cut through the paper-plastic film to form the third tear line.

[0052] Referring to Figure 6, the first cutting tooth 111, the second cutting tooth 121, and the third cutting tooth 131 are all single-sided cutting, that is, one side of the first cutting tooth 111, the second cutting tooth 121, and the third cutting tooth 131 is flat, and the other side is formed with a cutting edge. Single-sided cutting can make the first cutting tooth 111, the second cutting tooth 121, and the third cutting tooth 131 thinner, reducing the cutting resistance. Moreover, single-sided cutting can maintain a consistent cutting angle, avoid cutting deviation, and make the cutting of paper-plastic film by the blade body 1 more stable.

[0053] Referring to Figures 1 and 2, multiple U-shaped mounting grooves 14 are formed on the other side of the blade body 1 (the upper side of the blade body 1 in Figure 2). In this embodiment, there are six U-shaped mounting grooves 14. The blade body 1 can be securely mounted on the equipment for making paper-plastic film cushioning packaging through the six U-shaped mounting grooves 14. Beveled edges 141 can be formed on both sides of the opening of the U-shaped mounting groove 14. The beveled edges 141 serve as guides, facilitating the mounting part on the equipment for making paper-plastic film cushioning packaging to engage in the U-shaped mounting groove 14. In other embodiments, the number and arrangement of the U-shaped mounting grooves 14 can be adjusted appropriately according to the length of the blade body 1.

[0054] Referring to Figures 1 to 6, the paper-plastic film tear line mold of this utility model is snapped onto the equipment for making paper-plastic film cushioning packaging through a U-shaped mounting groove 14. During the production of paper-plastic film cushioning packaging, the blade 1 can simultaneously form tear lines on two parallel paper-plastic film cushioning packaging materials. Specifically, the first blade tooth 111 with a tooth height of 5mm can form the first tear line on the paper-plastic film cushioning packaging material. The first blade tooth 11 adopts a tooth width of 2.5mm and a tooth pitch of 2.5mm to ensure that the paper-plastic film cushioning packaging material is not easily torn apart during production, reducing the risk of breakage during production and use. The two first blade teeth 11, symmetrically arranged about the center line 100 of the blade 1 and spaced at a distance twice the tooth width of the first blade tooth 111, can simultaneously form the first tear line on two parallel paper-plastic film cushioning packaging materials, improving processing efficiency. The tooth width is 4mm.The second blade 121, with a 2mm diameter and a tooth height of 6mm, can completely cut the paper-plastic film at the corresponding position (this position can be considered as the second tear line). Two second blades 12, symmetrically arranged about the center line 100 of the blade body 1, can simultaneously completely cut the paper-plastic film at two symmetrical positions on two parallel paper-plastic film cushioning packages (this position can be considered as the second tear line). When the paper-plastic film cushioning package is fully inflated, this position is disconnected, and the stress in the air chamber at this position is released. When the fully inflated paper-plastic film cushioning package is pulled, this area... The air chambers within the packaging area will not rupture, thus improving the overall inflation effect of the paper-plastic film cushioning packaging. The third blade 131, with a tooth height of 5mm, can simultaneously form a third tear line on two parallel paper-plastic film cushioning packages. The third blade 13, with a tooth width of 4mm and a tooth pitch of 1mm, ensures that the paper-plastic film is cut through by the third blade 13 without being severed, while also ensuring that the paper-plastic film cushioning packaging is easily torn during use. The 1mm distance between the first blade 11 and the third blade 13 allows the paper-plastic film cushioning packaging to... During use, the connection between the first tear line formed by the first toothed portion 11 and the third tear line formed by the third toothed portion 13 on the plastic film cushioning packaging is easily broken. The 1mm gap between the second toothed portion 12 and the third toothed portion 13 also makes the connection between the second tear line formed by the second toothed portion 12 and the third tear line formed by the third toothed portion 13 on the paper-plastic film cushioning packaging easily broken during use. When it is necessary to break the paper-plastic film cushioning packaging during use, the paper-plastic film cushioning packaging will break from the second tear line. Starting with the tear line, the packaging is easily broken along the sequence of second tear line → third tear line, second tear line → third tear line → first tear line. Using the paper-plastic film tear line mold of this invention, the tear lines formed during the production of paper-plastic film cushioning packaging can reduce the risk of breakage during production and use, ensure that the paper-plastic film cushioning packaging is easily broken during use, guarantee the packaging strength during use, and prevent the air chamber of the inflated paper-plastic film cushioning packaging from rupturing. ， It can be used for both manual and machine-assisted cutting. In addition, the first cutting tooth 111, the second cutting tooth 121, and the third cutting tooth 131 with single-sided cutting are thinner, which can reduce cutting resistance. Moreover, single-sided cutting can maintain a consistent cutting angle, avoid cutting deviation, and make the cutting of paper-plastic film by the blade body 1 more stable.

[0055] Example 2:

[0056] Figure 7 schematically shows the structure of a paper-plastic film tearing line mold according to another embodiment of the present invention.

[0057] Referring to Figure 7, a paper-plastic film tear line mold includes a blade body 1. A first blade tooth 11, a second blade tooth 12 and a third blade tooth 13 are formed on one side of the blade body 1, and a plurality of U-shaped mounting grooves 14 are formed on the other side of the blade body 1.

[0058] In this embodiment, there is one first cutting tooth 11 and one second cutting tooth 12, and three U-shaped mounting grooves 14. The structure and size parameters of the first cutting tooth 11, the second cutting tooth 12, the third cutting tooth 13, and the U-shaped mounting grooves 14 are the same as those in Embodiment 1. The paper-plastic film tearing line mold in this embodiment is the part to the left or right of the center line 100 in Figure 2. That is, the paper-plastic film tearing line mold in this embodiment is half of the paper-plastic film tearing line mold in Embodiment 1.

[0059] Referring to Figure 7, the paper-plastic film tear line mold of this utility model is installed on the equipment for making paper-plastic film cushioning packaging through the U-shaped mounting groove 14. During the production of paper-plastic film cushioning packaging, the blade 1 forms a tear line on one paper-plastic film cushioning packaging. The tear line formed during the production of paper-plastic film cushioning packaging can reduce the risk of the paper-plastic film cushioning packaging breaking during production and use, and can also ensure that the paper-plastic film cushioning packaging is easy to break during use. The packaging strength of the paper-plastic film cushioning packaging can also be guaranteed during use, and the air chamber of the paper-plastic film cushioning packaging after inflation is not easy to be torn. At the same time, it can be used for both manual tearing and equipment tearing.

[0060] In other embodiments, depending on the processing needs, the blade body 1 in Figure 7 can be connected and extended sequentially along the length direction of the blade body 1 as a repeating unit, so that multiple parallel paper-plastic film cushioning packaging materials can be formed with tear lines at the same time, thereby improving processing efficiency.

[0061] Example 3:

[0062] A paper-plastic film cushioning packaging is made by forming tear lines on the paper-plastic film cushioning packaging using a paper-plastic film tear line mold as described in Embodiment 1 or Embodiment 2. The paper-plastic film cushioning packaging made with this invention using a paper-plastic film tear line mold can reduce the risk of breakage during production and use, while ensuring that the paper-plastic film cushioning packaging is easily torn during use. The packaging strength is also guaranteed during use, and the air chamber of the inflated paper-plastic film cushioning packaging is not easily torn. ， It can be used for both manual and machine-assisted breakage.

[0063] Example 4:

[0064] Figure 8 schematically shows the structure of a paper-plastic film cushioning packaging according to one embodiment of the present invention.

[0065] Referring to Figure 8, a paper-plastic film cushioning packaging includes a paper-plastic film cushioning packaging body 10.

[0066] The paper-plastic film cushioning packaging body 10 has a first tear line 20, a second tear line 30, and a third tear line 40 formed on it. The first tear line 20, the second tear line 30, and the third tear line 40 are distributed on a straight line from the right side to the left side of the paper-plastic film cushioning packaging body 10. The straight line containing the first tear line 20, the second tear line 30, and the third tear line 40 is perpendicular to the left and right sides of the paper-plastic film cushioning packaging body 10. The second tear line 30 is located between the first tear line 20 and the left side of the paper-plastic film cushioning packaging body 10. The third tear line 40 is distributed in the area outside the first tear line 20 and the second tear line 30 on the straight line from the right side to the left side of the paper-plastic film cushioning packaging body 10. That is, on the straight line from the right side to the left side of the paper-plastic film cushioning packaging body 10, except for a certain length of the first tear line 20 and the second tear line 30, all other tear lines are the third tear line 40.

[0067] Referring to Figure 8, the first tear line 20 includes first perforations 201 arranged at intervals, the second tear line 30 is generally broken, and the third tear line 40 includes second perforations 401 arranged at intervals. The length of the first perforation 201 is not greater than the distance between two adjacent first perforations 201. In this embodiment, the length of the first perforation 201 is equal to the distance between two adjacent first perforations 201, and the length of the second perforation 401 is greater than the distance between two adjacent second perforations 401.

[0068] Referring to Figure 8, in the paper-plastic film cushioning packaging of this utility model, since the length of the first perforation 201 is equal to the distance between two adjacent first perforations 201, the first tear line 20 can ensure that the paper-plastic film cushioning packaging body 10 is not easily broken or separated longitudinally during the production process, reducing the risk of breakage during use. Since the second tear line 30 is completely open, when the paper-plastic film cushioning packaging body 10 is fully inflated, the stress in the air chamber at this location is released. When the fully inflated paper-plastic film cushioning packaging body 10 is pulled, the air chamber in this area will not be ruptured, thus improving the overall inflation effect of the paper-plastic film cushioning packaging body 10. Since the third tear line 40 is distributed in the area other than the first tear line 20 and the second tear line 30 on the straight line from one side to the other of the film cushioning packaging body 10, and the length of the second perforation 401 is greater than the distance between two adjacent second perforations 401, the third tear line 40 can ensure that the paper-plastic film cushioning packaging body 10 can be easily broken during use. When it is necessary to break the paper-plastic film cushioning packaging body 10 during use, the paper-plastic film cushioning packaging body 10 will be easily broken starting from the second tear line 30, along the sequence of second tear line 30 → third tear line 40, second tear line 30 → third tear line 40 → first tear line 20, thus accommodating both manual breaking and equipment breaking.

[0069] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A paper-plastic film tear line mold, characterized in that, The device includes a blade body. On one side of the blade body are a first cutting tooth portion, a second cutting tooth portion, and a third cutting tooth portion. The second cutting tooth portion is located between the first cutting tooth portion and the end of the blade body. The third cutting tooth portion is located in the area on one side of the blade body other than the first and second cutting tooth portions. On the other side of the blade body are multiple U-shaped mounting grooves. The first cutting tooth portion includes multiple parallel first cutting teeth, the tooth width of which is not greater than the tooth pitch of two adjacent first cutting teeth. The second cutting tooth portion includes multiple sequentially connected second cutting teeth, the tooth height of which is greater than the tooth height of the first cutting teeth. The third cutting tooth portion includes multiple parallel third cutting teeth, the tooth width of which is greater than the tooth pitch of two adjacent third cutting teeth, and the tooth height of the second cutting teeth is greater than the tooth height of the third cutting teeth.

2. The paper-plastic film tear line mold according to claim 1, characterized in that, The width of the first cutting tooth is 2.5 mm, the width of the first cutting tooth is equal to the tooth pitch of two adjacent first cutting teeth, the tooth height of the first cutting tooth is 5 mm, and the distance between the first cutting tooth portion and the third cutting tooth portion is 1 mm.

3. The paper-plastic film tear line mold according to claim 2, characterized in that, The two cutting edges of the first cutting tooth intersect at an angle of 60 degrees.

4. The paper-plastic film tear line mold according to claim 1, characterized in that, There are two second cutting teeth, which are located on both sides of the first cutting tooth and are symmetrically arranged about the center line of the blade body.

5. The paper-plastic film tear line mold according to claim 1, characterized in that, The second cutting tooth has a tooth width of 4.2 mm, a tooth height of 6 mm, and five cutting teeth. The distance between the second cutting tooth and the third cutting tooth is 1 mm.

6. The paper-plastic film tear line mold according to claim 5, characterized in that, The two cutting edges of the second cutter intersect at an angle of 90 degrees.

7. The paper-plastic film tear line mold according to claim 1, characterized in that, The third cutting tooth has a tooth width of 4mm, a tooth spacing of 1mm between two adjacent third cutting teeth, and a tooth height of 5mm.

8. The paper-plastic film tear line mold according to claim 7, characterized in that, The two cutting edges of the third cutting tooth intersect at an angle of 60 degrees.

9. The paper-plastic film tear line mold according to claim 1, characterized in that, The first, second, and third cutting teeth are all single-edged.

10. The paper-plastic film tearing line mold according to any one of claims 1 to 9, characterized in that, The first cutting tooth is located in the middle of the blade body. There are two first cutting teeth. The distance between the two first cutting teeth is twice the tooth width of the first cutting tooth. The two first cutting teeth are symmetrically arranged about the center line of the blade body.

11. A paper-plastic film cushioning packaging material, characterized in that, It is made by forming tear lines on paper-plastic film cushioning packaging using a paper-plastic film tear line mold as described in any one of claims 1 to 10.

12. A paper-plastic film cushioning packaging material, characterized in that, The product includes a paper-plastic film cushioning packaging body, which has a first tear line, a second tear line, and a third tear line. The first, second, and third tear lines are distributed on a straight line from one side of the paper-plastic film cushioning packaging body to the other side. The straight line containing the first, second, and third tear lines is perpendicular to the side of the paper-plastic film cushioning packaging body. The second tear line is located between the first tear line and one side of the paper-plastic film cushioning packaging body. The third tear line is distributed in the area outside the first and second tear lines on the straight line from one side of the paper-plastic film cushioning packaging body to the other side. The first tear line includes spaced-apart first perforations. The second tear line is completely broken. The third tear line includes spaced-apart second perforations. The length of the first perforation is not greater than the distance between two adjacent first perforations, and the length of the second perforation is greater than the distance between two adjacent second perforations.

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