Improved manufacturing method for PVC plastic sheet and cardboard combined printed wine boxes

Abstract

An improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard includes mold making, inner lining processing, outer casing installation, and end fixing steps. The mold has an n-shaped cavity that can be connected to a vacuum pump via a connecting pipe. Vacuum adsorption holes are located on the outer side of the mold. The vacuum pump creates negative pressure within the cavity, stably adsorbing the cardboard onto the outer frame. The n-shaped cavity design ensures effective cardboard adsorption while reducing its volume, making it easier for the cardboard to adhere to the outer frame. The cavity is divided into an independent upper chamber and two side chambers by protrusions. This allows the cardboard to be pre-adsorbed and fixed to the outer frame via vacuum adsorption holes on the top plate during adsorption. Then, the ends of the cardboard are pressed down onto the outer plates by hand, making the inner lining production simpler and faster.

Description

Technical Field

[0001] This invention relates to the field of paper box manufacturing technology, specifically to an improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard. Background Technology

[0002] Printed wine boxes, or packaging boxes for alcoholic beverages, provide effective protection for wine bottles during storage and transportation. The applicant's previous patent application, CN202111444676.6, disclosed a method for manufacturing a wine box combining PVC plastic sheet and cardboard. To improve the protective effect of the wine box while simplifying its production, a mold was disclosed. This mold facilitates the production of the wine box. However, in practical application, it was found that a clamping module is needed to secure the innermost lining, ensuring stable adhesion to the mold. This makes the production process still relatively cumbersome. Furthermore, the clamping module alone has limited effectiveness in securing the lining, and its placement also affects the gluing process for the lining. Therefore, the auxiliary role of the mold in wine box production remains inadequate.

[0003] The application document with application number CN202120662931.3 discloses an auxiliary tooling for pasting stickers on wine boxes. It has a cavity inside the mold body and suction holes on the outer wall of the mold. A negative pressure device can provide a negative pressure to the cavity, and then the sticker is adsorbed and fixed on the mold by the suction holes. The sticker pasting work inside the wine box is completed by placing the wine box on the mold. However, this auxiliary tooling still has limitations in use.

[0004] On the one hand, when the mold body has adsorption holes on multiple sides, the sticker needs to be applied to multiple sides simultaneously for the mold body to produce the corresponding adsorption effect. This requires that the sticker not be too hard; otherwise, gaps will exist on any adsorption surface, and the mold body will lose its adsorption function, increasing the limitations of the mold body's use. On the other hand, since the mold body has an overall hollow cavity structure and needs to ensure that the mold body's specifications can match the wine box, the negative pressure device needs to work for a long time to firmly adsorb the inner lining paper onto the mold body. If air leakage occurs during this period, the adsorption work will have to be restarted, which also limits the adsorption effect of the mold body. Summary of the Invention

[0005] To address the technical problems mentioned above, this invention provides an improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard.

[0006] The technical solution of this invention is as follows: The improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard includes the following steps: S1. Mold making The mold includes an outer frame and an inner frame. The outer frame is an n-shaped structure, which includes a horizontally arranged outer top plate and an outer side plate vertically arranged below the left and right sides of the outer top plate. The inner frame is also an n-shaped structure, which includes an inner top plate horizontally arranged below the outer top plate and an inner side plate vertically arranged below the left and right sides of the inner top plate. There are gaps between the outer top plate and the inner top plate, as well as between the outer side plate and the inner side plate next to it. A sealing strip is provided between the outer edges of the two frames. Based on this, an n-shaped cavity structure is formed between the outer frame and the inner frame. The upper surface of the inner top plate is provided with protruding strips on the left and right sides that abut against the lower surface of the outer top plate. Based on this, the cavity is divided into an independent upper chamber and side chambers on both sides of the upper chamber by the protruding strips. Both the inner top plate and the inner side plate are provided with a communication port, and the communication port is provided with a connecting pipe that can be connected to a vacuum pumping device. Both the outer top plate and the outer side plate are provided with a number of vacuum adsorption holes. S2, Lining Processing S2.1 Connect the connecting pipe to the vacuum pumping equipment and start the vacuum pumping equipment; S2.2 Select strips of cardboard with a width not greater than the front and back width of the mold. Attach the middle part of the cardboard to the upper side of the outer top plate and press both ends down to fit against the outer side plate to form the inner lining. S2.3 Apply adhesive to the outer surface of the lining; Installation of S3 and PVC plastic sheets The shape of the PVC plastic sheet matches the shape of the front and rear ends of the mold, and the edge to be bonded to the inner lining is bent to one side. The specific steps are as follows: Two PVC plastic sheets are vertically fastened to the front and back sides of the mold, and then bonded to the inner lining by bending the edges. S4, Peripheral Installation S4.1 Select a strip of cardboard with a length greater than the cardboard length, and coat one side of the cardboard with adhesive; S4.2 Attach the middle part of the outer shell to the upper end of the inner lining, and press the two ends of the outer shell down to attach them to the outer side of the inner lining. S5, End fixing S5.1 Turn off the vacuum equipment and remove the printed wine box obtained in step S4 from the mold; S5.2 Fold the portions of the outer casing that extend beyond the ends of the cardboard inward and attach them to the inside of both ends of the cardboard.

[0007] The above-described manufacturing method utilizes a vacuum system to create negative pressure within the n-shaped cavity, thereby stably adsorbing the cardboard onto the outer side of the outer frame. The n-shaped cavity design ensures effective adsorption of the cardboard by the mold while reducing its volume, making it easier for the cardboard to adhere to the outer frame. The raised strips divide the cavity into an independent upper chamber and two side chambers, allowing the cardboard to be pre-adsorbed and fixed to the outer frame via the vacuum adsorption holes on the top plate during adsorption. Then, the two ends of the cardboard can be pressed down onto the outer side plates by hand. Even with a relatively rigid cardboard, the mold can still easily and stably complete the adsorption and fixation of the cardboard, making the production of the inner lining simpler and faster.

[0008] As described above, in the improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard, in step S1, the front-to-back width of the inner frame is smaller than that of the outer frame, and the inner rings on the front and back sides of the outer frame are both inwardly inclined slope structures. On the one hand, this setting allows the PVC plastic sheet to deform inward near the bending edge when it is installed by pressing it, ensuring that it can better fit with the outer frame and preventing the edges from lifting due to compression, thus ensuring the installation effect. On the other hand, in step S4, when the printed wine box is removed, this setting also makes it easier for the printed wine box to detach from the mold.

[0009] In a preferred embodiment, the sealing strip located between the inner top plate and the outer top plate, and the sealing strip located between the front and rear sides of the outer side plate and the inner side plate are respectively the upper sealing strip and the side sealing strip. To further ensure the installation effect of the PVC plastic sheet, the outer end face of the upper sealing strip and the side sealing strip is set as an inclined structure coplanar with the inclined surface of the inner ring of the outer frame.

[0010] As described above, in the improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box, in step S1, a circular placement opening is provided in the middle of both top plates, and a sealing ring coaxial with the placement opening is provided between the two top plates. This setting enables the installation and fixing of the cap, so that when the finished printed wine box is used to hold wine, the cap can cooperate with the bottle cap, allowing the wine bottle to be placed more stably inside the printed wine box.

[0011] Based on the above structure, in order to ensure the adsorption effect of the upper chamber on the cardboard, several vacuum adsorption holes located on the outer top plate are evenly distributed around the placement opening.

[0012] In the improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard as described above, in step S1, a support plate is also provided inside the inner frame to ensure the stability of the mold structure itself.

[0013] As described above, in the improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard, in step S1, the width of the cardboard is smaller than the front and rear width of the mold. The front and rear sides of the outer side plate are vertically provided with card slots, and cards are detachably provided through the card slots. The distance between the two card slots on the same outer side plate matches the width of the cardboard. When making the inner lining, the cooperation between the cardboard and the card ensures that the adsorption positions of the two ends of the cardboard on the side plate are more accurate, thereby ensuring that the card can be more stably adsorbed on the mold, and also ensuring that subsequent processing work can proceed smoothly.

[0014] To ensure the card slot can secure the card and make it easier to insert and remove the card, a nitrile rubber strip is provided on one of the vertical side walls of the card slot.

[0015] In the improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard as described above, in step S3, after the PVC plastic sheet is installed, an adhesive is applied to the outer side of the bent edge of the PVC plastic sheet to ensure that the cardboard can better cooperate with the cardboard to complete the fixing of the PVC plastic sheet.

[0016] In the improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard as described above, in step S4, the width of the outer shell is the same as the front and rear width of the mold, so as to ensure that the two sides of the outer shell are flush with the bending position of the PVC plastic sheet, and to ensure that the PVC plastic sheet is more firmly fixed.

[0017] The beneficial effects of this invention are as follows: This invention provides an improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard. The mold used, when in use, utilizes a vacuum device to create negative pressure in the n-shaped cavity, thereby stably adsorbing the cardboard onto the outside of the outer frame. The n-shaped cavity design, while ensuring effective adsorption of the cardboard, reduces the cavity volume, making it easier for the cardboard to adhere to the outside of the outer frame. The raised strips divide the cavity into an independent upper chamber and two side chambers, allowing the cardboard to be pre-adsorbed and fixed to the outer frame via vacuum adsorption holes on the top plate during adsorption. Then, the two ends of the cardboard are pressed down onto the outer side plates by hand. Even with relatively rigid cardboard, the mold can still easily and stably complete the adsorption and fixing process, making the production of the inner lining simpler and faster. Attached Figure Description

[0018] The solutions and advantages of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

[0019] In the attached diagram: Figure 1This is a schematic diagram of the mold structure in the embodiment; Figure 2 for Figure 1 The main view; Figure 3 This is a schematic diagram of the outer frame in the embodiment; Figure 4 This is a schematic diagram of the mating structure between the side plate and the limiting member in the embodiment; Figure 5 This is a schematic diagram illustrating the installation method of the nitrile rubber strip in the embodiment; Figure 6 This is a schematic diagram of the mating structure of the inner frame, sealing strip, and sealing ring in the embodiment; Figure 7 for Figure 6 A cross-sectional view; Figure 8 This is a schematic diagram of the cross-sectional structure of the mold in the embodiment; The components represented by the various reference numerals in the diagram are: 1. Outer frame; 11. Outer top plate; 111. Placement opening; 112. Vacuum adsorption hole; 12. Outer side plate; 121. Slot; 2. Inner frame; 21. Inner top plate; 211. Connecting opening; 22. Inner side plate; 23. Raised strip; 3. Sealing strip; 31. Side sealing strip; 32. Upper sealing strip; 33. Lower sealing strip; 4. Support plate; 41. Structural plate; 42. Reinforcing plate; 5. Sealing ring; 6. Limiting component; 61. Nitrile rubber strip; 62. Card. Detailed Implementation

[0020] Exemplary embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings.

[0021] Example This embodiment provides an improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard, including mold making, inner lining processing, PVC plastic sheet installation, outer casing installation, and end fixing steps. The steps of the manufacturing method are described in detail below.

[0022] S1. Mold making Combination Figure 1 , Figure 2 and Figure 8 The mold includes an outer frame 1 and an inner frame 2 inside it; S1.1, Fabrication of outer frame 1 Combination Figures 3-5 The outer frame 1 has an n-shaped structure, which includes a horizontally arranged outer top plate 11 and an outer side plate 12 vertically arranged below the left and right sides of the outer top plate 11. The specific method for step S1.1 is as follows: Make the outer top plate 11 horizontal, and attach the two outer side plates 12 vertically and oppositely to the lower left and right sides of the outer top plate 11; S1.2, Fabrication of Inner Frame 2 Combination Figure 6 and Figure 7 The inner frame 2 is an n-shaped structure, which includes a horizontally arranged inner top plate 21 and an inner side plate 22 vertically arranged below the left and right sides of the inner top plate 21. The specific method for step S1.2 is as follows: Make the inner top plate 21 horizontal, and attach the two inner side plates 22 vertically and oppositely to the lower part of the left and right sides of the inner top plate 21. S1.3, Sealed connection between the two frames There are gaps between the outer top plate 11 and the inner top plate 21, as well as between the outer side plate 12 and the inner side plate 22 adjacent to it, and a sealing strip 3 is provided between the outer edges of the two frames. Based on this, an n-shaped cavity structure is formed between the outer frame 1 and the inner frame 2. The upper surface of the inner top plate 21 is provided with protrusions 23 on the left and right sides that abut against the lower surface of the outer top plate 11. Based on this, the cavity is divided into an independent upper chamber and side chambers on both sides of the upper chamber by the protrusions 23. Both the inner top plate 21 and the inner side plate 22 are provided with a communication port 211, and the communication port 211 is provided with a connecting pipe (not shown in the figure) that can be connected to a vacuum pumping device. Both the outer top plate 11 and the outer side plate 12 are provided with a plurality of vacuum adsorption holes 112. The specific method for step S1.3 is as follows: Sealing strips 3 are glued to the edge of the outer side of the inner frame 2 (the lower side of the outer side of the two inner side plates 22 and the front and rear sides, and the front and rear sides of the upper end face of the inner top plate 21), and protruding strips 23 are glued to the left and right sides of the upper end face of the inner top plate 21. The protruding strips 23 are set along the left and right sides of the inner top plate 21, and the front and rear ends of the protruding strips 23 abut against the sealing strips 3 on the front and rear sides of the upper end face of the inner top plate 21. The outer frame 1 is fastened onto the inner frame 2, and the sealing strip 3 is bonded to the edge of the outer frame 1 (the lower side of the inner side of the two outer side plates 12 and the front and rear sides, and the front and rear sides of the lower end face of the outer top plate 11). S2, Lining Processing S2.1 Connect the connecting pipe to the vacuum pumping equipment and start the vacuum pumping equipment; S2.2 Select strips of cardboard with a width not greater than the front and rear width of the mold, attach the middle part of the cardboard to the upper side of the outer top plate 11, and press down both ends to fit with the outer side plate 12 to make an inner lining; S2.3 Apply adhesive to the outer surface of the lining; Installation of S3 and PVC plastic sheets The shape of the PVC sheet matches the shape of the front and rear ends of the mold, and the edge to be bonded to the inner lining is bent to one side. The specific method for step S3 is as follows: Two PVC plastic sheets are vertically fastened to the front and back sides of the mold, and then bonded to the inner lining by bending the edges. To ensure that the cardboard can better cooperate with the card to fix the PVC plastic sheet, after the PVC plastic sheet is installed, an adhesive needs to be applied to the outside of the bent edge of the PVC plastic sheet. S4, Peripheral Installation S4.1 Select a strip of cardboard with a length greater than the cardboard length, and coat one side of the cardboard with adhesive; S4.2 Attach the middle part of the outer shell to the upper end of the inner lining, and press the two ends of the outer shell down to attach them to the outer side of the inner lining. It should be noted that the width of the shell in step S4 is the same as the front and back width of the mold, so as to ensure that the two sides of the shell are flush with the bending position of the PVC plastic sheet, and to ensure that the PVC plastic sheet is more firmly fixed. S5, End fixing S5.1 Turn off the vacuum equipment and remove the printed wine box obtained in step S4 from the mold; S5.2 Fold the portions of the outer casing that extend beyond the ends of the cardboard inward and attach them to the inside of both ends of the cardboard.

[0023] The above-described manufacturing method uses a vacuum device to create negative pressure in the n-shaped cavity, thereby stably adsorbing the cardboard onto the outside of the outer frame 1. The n-shaped cavity design ensures the mold's adsorption effect on the cardboard while reducing the cavity volume, making it easier for the cardboard to be adsorbed onto the outside of the outer frame 1. The protrusions 23 divide the cavity into an independent upper chamber and two side chambers, allowing the cardboard to be pre-adsorbed and fixed onto the outer frame 1 through the vacuum adsorption holes 112 on the outer top plate 11 during adsorption. Then, the two ends of the cardboard can be pressed down onto the outer side plates 12 by hand. Even if the cardboard is relatively hard, the mold can still complete the adsorption and fixation of the cardboard relatively easily and stably, making the manufacturing of the inner lining part simpler and faster.

[0024] In this embodiment, combined with Figure 1The front-to-back width of the inner frame 2 is smaller than that of the outer frame 1. The inner rings of the front and back sides of the outer frame 1 are all inclined slope structures, that is, the inner sides of the front and back sides of the outer top plate 11 and the outer side plate 12 are inclined structures. On the one hand, this setting allows the PVC plastic sheet to deform inward near the bending edge when it is installed by pressing it, ensuring that it can fit better with the outer frame 1 and preventing the edge from lifting due to the compression of the PVC plastic sheet, thus ensuring the installation effect. On the other hand, when the printed wine box is taken out in step S4, this setting also makes it easier for the printed wine box to separate from the mold.

[0025] In a preferred embodiment, the sealing strip 3 located between the inner top plate 21 and the outer top plate 11, and the sealing strip 3 located between the front and rear sides of the outer side plate 12 and the inner side plate 22, are respectively the upper sealing strip 32 and the side sealing strip 31, and the sealing strip 3 located between the lower side of the outer side plate 12 and the inner side plate 22 is the lower sealing strip 33. Figure 7 To further ensure the installation effect of the PVC plastic sheet, the outer end faces of the upper sealing strip 32 and the side sealing strip 31 are set as inclined structures that are coplanar with the inner ring inclined surface of the outer frame 1.

[0026] In this embodiment, combined with Figure 6 Both top plates have a circular placement opening 111 in the middle, and a sealing ring 5 coaxial with the placement opening 111 is provided between the two top plates. That is, in step S1.3, the sealing ring 5 is also glued and installed. This setting can complete the installation and fixing of the cap, so that when the printed wine box is used to hold wine, the cap can cooperate with the bottle cap, so that the wine bottle can be placed more stably in the printed wine box.

[0027] Based on the above structure, in order to ensure the adsorption effect of the upper chamber on the cardboard, a number of vacuum adsorption holes 112 on the outer top plate 11 are evenly distributed around the placement opening 111.

[0028] In this embodiment, combined with Figure 1 To ensure the stability of the mold's structure, the inner frame 2 is also equipped with a support plate 4. That is, after the inner top plate 21 and the inner side plate 22 are assembled in step S1.2, the support plate 4 is also installed. Specifically, the support plate 4 includes two structural plates 41 for stabilizing the n-shaped structure of the inner frame 2, which are bonded between the lower ends of the two inner side plates 22 and are located on the front and rear sides of the inner frame 2 respectively. The support plate 4 also includes two reinforcing plates 42 for stabilizing the connection between the inner top plate 21 and the inner side plate 22, which are bonded between the upper ends of the two inner side plates 22 and are located on the front and rear sides of the inner frame 2 respectively.

[0029] In this embodiment, the width of the cardboard is smaller than the front and back width of the mold, combined with Figure 4 and Figure 5 To ensure the mold's ability to adsorb and fix the cardboard, a limiting member 6 is also provided on the outer side plate 12.

[0030] Specifically, the outer side plate 12 has vertical slots 121 on both the front and rear sides of its outer side. The limiting member 6 includes a detachable card 62 inserted into the slot 121. The distance between the two slots 121 on the same outer side plate 12 matches the width of the cardboard. When making the inner lining, the cooperation between the cardboard and the card 62 ensures that the adsorption position of the two ends of the cardboard on the side plate is more accurate, thereby ensuring that the card can be more stably adsorbed on the mold. At the same time, it also ensures that subsequent processing can proceed smoothly.

[0031] To ensure the card slot 121 secures the card 62 and makes it easier to insert and remove the card 62, the limiting member 6 also includes a nitrile rubber strip 61 on one of the vertical side walls of the card slot 121.

Claims

1. An improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard, characterized in that, Includes the following steps: S1. Mold making The mold includes an outer frame (1) and an inner frame (2) inside it; The outer frame (1) is an n-shaped structure, which includes a horizontally arranged outer top plate (11) and vertically arranged outer side plates (12) below the left and right sides of the outer top plate (11). The specific manufacturing method is as follows: Make the outer top plate (11) horizontal, and attach the two outer side plates (12) vertically and oppositely to the lower left and right sides of the outer top plate (11); The inner frame (2) is also an n-shaped structure, which includes an inner top plate (21) horizontally located below the outer top plate (11), and inner side plates (22) vertically located below the left and right sides of the inner top plate (21). The specific manufacturing method is as follows: Make the inner top plate (21) horizontal and attach the two inner side plates (22) vertically and oppositely to the lower left and right sides of the inner top plate (21); There are gaps between the outer top plate (11) and the inner top plate (21), and between the outer side plate (12) and the inner side plate (22) next to it, and a sealing strip (3) is provided between the outer edges of the two frames. An n-shaped cavity structure is formed between the outer frame (1) and the inner frame (2). The upper surface of the inner top plate (21) is provided with protruding strips (23) on the left and right sides, which abut against the lower surface of the outer top plate (11). The protruding strips (23) are provided along the left and right sides of the inner top plate (21), and the front and rear ends of the protruding strips (23) abut against the sealing strips (3) on the front and rear sides of the upper surface of the inner top plate (21). The cavity is divided into an independent upper chamber and side chambers on both sides of the upper chamber by the protruding strips (23). Both the inner top plate (21) and the inner side plate (22) are provided with a communication port (211), and the communication port (211) is provided with a connecting pipe that can be connected to a vacuum pumping device; The outer top plate (11) and the outer side plate (12) are provided with a number of vacuum adsorption holes (112); S2, Lining Processing S2.1 Connect the connecting pipe to the vacuum pumping equipment and start the vacuum pumping equipment; S2.2 Select strips of cardboard with a width not greater than the front and back width of the mold, attach the middle part of the cardboard to the upper side of the outer top plate (11), and press both ends down to fit with the outer side plate (12) to make an inner lining; S2.3 Apply adhesive to the outer surface of the lining; Installation of S3 and PVC plastic sheets The shape of the PVC plastic sheet matches the shape of the front and rear ends of the mold, and the edge to be bonded to the inner lining is bent to one side. The specific steps are as follows: Two PVC plastic sheets are vertically fastened to the front and back sides of the mold, and then bonded to the inner lining by bending the edges. S4, Peripheral Installation S4.1 Select a strip of cardboard with a length greater than the cardboard length, and coat one side of the cardboard with adhesive; S4.2 Attach the middle part of the outer shell to the upper end of the inner lining, and press the two ends of the outer shell down to attach them to the outer side of the inner lining. S5, End fixing S5.1 Turn off the vacuum equipment and remove the printed wine box obtained in step S4 from the mold; S5.2 Fold the portions of the outer casing that extend beyond the ends of the cardboard inward and attach them to the inside of both ends of the cardboard.

2. The improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard according to claim 1, characterized in that, In step S1: The front and rear width of the inner frame (2) is smaller than the front and rear width of the outer frame (1), and the inner rings on the front and rear sides of the outer frame (1) are both inclined surface structures facing inward.

3. The improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard according to claim 2, characterized in that, In step S1: The sealing strip (3) located between the inner top plate (21) and the outer top plate (11), and the sealing strip (3) located between the front and rear sides of the outer side plate (12) and the inner side plate (22) are respectively the upper sealing strip (32) and the side sealing strip (31). The outer end faces of the upper seal (32) and the side seal (31) are inclined structures that are coplanar with the inner inclined surface of the outer frame (1).

4. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to any one of claims 1-3, characterized in that, In step S1: Both top plates have a circular placement opening (111) in the middle, and a sealing ring (5) coaxial with the placement opening (111) is provided between the two top plates.

5. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to claim 4, characterized in that, In step S1: A plurality of vacuum adsorption holes (112) located on the outer top plate (11) are evenly distributed around the placement opening (111).

6. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to any one of claims 1-3, characterized in that, In step S1: The inner frame (2) is also provided with a support plate (4).

7. The improved method for manufacturing a printed wine box combining PVC plastic sheet and cardboard according to any one of claims 1-3, characterized in that, In step S1: The outer side plate (12) has vertical slots (121) on both the front and rear sides, and a card (62) is detachably provided through the slots (121). The spacing between the two card slots (121) on the same outer side plate (12) is matched with the width of the card.

8. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to claim 7, characterized in that, In step S1: A nitrile rubber strip (61) is provided on one of the vertical side walls of the slot (121).

9. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to any one of claims 1-3, characterized in that, In step S3: After the PVC plastic sheet is installed, an adhesive is applied to the outside of the bent edge of the PVC plastic sheet.

10. The improved method for manufacturing a PVC plastic sheet and cardboard combined printed wine box according to any one of claims 1-3, characterized in that, In step S4: The width of the outer shell is the same as the front and back width of the mold.

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