Composite multifunctional paper box and manufacturing method

Abstract

The invention relates to the technical field of paper boxes, in particular to a composite multifunctional paper box and a manufacturing method.The composite multifunctional paper box comprises a box body, a box cover, a supporting body and linings, the linings comprise the upper lining and the lower lining, the upper lining and the lower lining are both connected with longitudinal supporting bodies and located in the space defined by the longitudinal supporting bodies, and the upper lining and the lower lining are connected with the box cover. The upper lining is located above the lower lining, grooves are formed in the upper lining and the lower lining, and when the upper lining and the lower lining are overlapped, the grooves of the upper lining and the lower lining can coincide to form a space for storing articles. The lining containing space can be attached to the contour shapes of most regular objects, so that the objects can be embedded into the lining more tightly, and damage in the transportation process is reduced. The box cover, the box body, the supporting body, the upper lining and the lower lining are designed on the same plate, integrated forming is achieved through optimized folding and connecting relations, and the production process is remarkably simplified.

Description

Technical Field

[0001] This invention relates to the field of paper box technology, and more particularly to a composite multifunctional paper box and its manufacturing method. Background Technology

[0002] Packaging boxes, as a common product container, are widely used in electronics, cosmetics, gifts, and precision instruments. To better secure and protect the contents during transportation and display, preventing damage from shaking and collisions, the industry typically incorporates an inner lining structure inside the box. Traditional lined boxes often use a pre-formed plastic tray or a separate paper structure formed through complex folding, which is then assembled into the outer box.

[0003] This type of structure has some inherent drawbacks: First, while plastic liners offer good formability, they are environmentally unfriendly and increase the cost of plasticizers and assembly. The plasticizers are physically bonded to the plastic, not chemically, making them easily released into the environment. Humans inevitably ingest these plasticizers through inhalation, ingestion, and skin contact, posing a potential threat to health. Second, paper liners often require separate manufacturing and production using multiple die-cutting plates, resulting in low production efficiency and high costs. Furthermore, existing paper liners typically have a simple structure and a fixed shape after molding. The box body and liner of traditional paper boxes are not integrated but separate, and the storage space of the liner cannot conform to the product's contours, making it difficult to flexibly adapt to products of different shapes and sizes. This is especially true for products requiring precise locking and fastening on both sides; traditional structures are insufficient in terms of molding accuracy, support stability, and product wrapping. Therefore, there is a need for a robust, simple, adaptable, and environmentally friendly integrated paper box structure and its manufacturing method. Summary of the Invention

[0004] The main objective of this invention is to provide a composite multifunctional paper box and its manufacturing method to solve the problems raised in the related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a composite multifunctional paper box is provided, comprising: The box body provides support for the entire cardboard box; A lid, which can be opened and is located on the top of the box body, is used to cover the box body; The support body includes two longitudinal supports, which are respectively located on both sides inside the box body to support the box body; The lining comprises at least two pieces, namely an upper lining and a lower lining. Both the upper and lower linings are connected to the longitudinal support and are located within the space enclosed by the longitudinal support. The upper lining is located above the lower lining, and both have grooves. When the upper and lower linings overlap, their grooves also overlap. The upper and lower linings are respectively connected to an upper holding piece, a lower holding piece, and a retrieval strip. After softening and shaping, a space for storing items is formed. The box body, lid, support, and inner lining are integrated into one unit.

[0006] Furthermore, the box body includes a body piece, on which a rear upright piece and a front outer upright piece are fixedly provided on two opposite sides respectively. A rear support ear is fixedly provided on both opposite sides of the rear upright piece. A front inner upright piece is fixedly provided on the outer edge of the front outer upright piece. A body connecting piece is fixedly provided on the outer edge of the front inner upright piece. A front support ear is fixedly provided on both opposite sides of the front outer upright piece. The lid includes a lid body, on both sides of the lid body an outer lid piece is fixedly provided, an inner lid piece is fixedly provided on the outer side of the outer lid piece, one side of the lid body is fixedly connected to the rear upright piece, the other side is fixedly provided with an outer lid upright piece, an inner lid upright piece is fixedly provided on the outer side of the outer lid upright piece, and lid support ears are fixedly provided on both sides of the outer lid upright piece.

[0007] Furthermore, the two longitudinal supports are respectively the first longitudinal support and the second longitudinal support located on two opposite sides of the box cover. The first longitudinal support includes a first longitudinal support outer piece, a first longitudinal support transverse piece, a first longitudinal support middle piece and a first longitudinal support inner piece arranged in sequence and fixedly connected. The first longitudinal support outer piece is fixedly connected to the body piece, and the first longitudinal support inner piece is used to connect to the upper liner. The second longitudinal support includes a second longitudinal support outer piece, a second longitudinal support transverse piece, a second longitudinal support middle piece, and a second longitudinal support inner piece, which are arranged in sequence and fixedly connected. The second longitudinal support outer piece is fixedly connected to the body piece, and the second longitudinal support inner piece is used to connect to the lower lining.

[0008] Furthermore, a foam sheet is provided on the back of the lower inner liner to support and elevate the lower inner liner.

[0009] Furthermore, the thickness of the foam sheet plus the inner liner and the lower inner liner is equal to or less than the height of the front outer panel.

[0010] Furthermore, the upper and lower inner linings are folded and then connected as a whole by applying adhesive and pressing or by interlocking.

[0011] Furthermore, the upper liner includes an upper liner sheet, on which a plurality of upper holding pieces are separated from the upper liner sheet, and on which a taking strip separated from the upper holding piece or the upper liner sheet is fixedly provided, and foldable upper side baffles are provided at the left and right edges of the upper liner sheet.

[0012] Furthermore, the lower liner includes a lower liner sheet, on which a plurality of lower holding pieces are provided, and foldable lower side baffles are provided at the left and right edges of the lower liner sheet, with the opening directions of the upper holding pieces and the lower holding pieces being opposite.

[0013] Furthermore, after the upper and lower containers are connected, they are pressed downward into the box to form a groove that can be embedded in the product.

[0014] Another aspect of the present invention provides a method for manufacturing a composite multifunctional paper box, comprising the following steps: S1: Design the box shape according to the product requirements so that all parts of the cardboard box are located on the same plate and are connected to each other. The depth of the holding area can be adjusted according to the length of the upper and lower holding pieces during the design. S2: Based on the box design drawing, create the die-cutting template; S3: Use a die-cutting die to die-cut and creasing the substrate. After die-cutting, remove the waste edges around the edges. S4: Attach foam sheets of equal thickness to at least two corners on the back of the lower inner lining sheet, the thickness of the foam sheets plus the inner lining and the lower inner lining being equal to or less than the height of the front outer panel. S5: Apply adhesive. Apply adhesive to the overlapping side of the upper and lower inner linings after folding and press them together to connect them into a whole. S6. Perform secondary gluing to connect the overlapping areas of the upper and lower containers. Press the connected containers downward into the box to form a groove for product embedding. S7: Soften the connected upper and lower containers; S8: Perform shaping treatment on the connected upper and lower containers; S9: Fold the various parts of the cardboard box to form the shape of the cardboard box.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. This application significantly simplifies the production process by designing the lid, body, support, and upper and lower inner linings on a single die-cutting plate and achieving integrated molding through optimized folding and connection relationships. This method requires only one die-cutting plate and one die-cutting operation to complete the preparation of all components, effectively reducing the number of die-cutting operations and mold manufacturing costs, improving production efficiency, and reducing errors and costs caused by the separate production and assembly of multiple components.

[0016] 2. This application, by setting up upper and lower inner linings with overlapping grooves, combined with subsequent softening and stamping processes, can form a customized item fixing area that closely conforms to the product's shape. This structure not only provides excellent cushioning and fixing effects, effectively protecting the product from impacts during transportation, but its shape can also be flexibly adjusted according to specific products, making it highly versatile. Simultaneously, the three-dimensional support frame composed of longitudinal supports further enhances the overall structural strength and stability of the cardboard box. Furthermore, the inner lining storage space of this invention can conform to the contours of most regular objects, allowing the objects to be embedded more tightly within the lining and reducing damage during transportation.

[0017] 3. This application eliminates the need for traditional plastic liners by folding cardboard to form an inner lining and using softening and shaping processes to form a product-containing area. The cardboard boxes made using this method do not contain plasticizers, thus avoiding the impact of plasticizers on human health. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the closed state of the present invention; Figure 2 This is a schematic diagram of the open state of the present invention; Figure 3 This is a schematic diagram of the fully deployed state of the present invention; Figure 4 This is a schematic diagram of the combined folded state of the present invention; Figure 5 This is a partially enlarged schematic diagram of the present invention. Figure 1 ; Figure 6 This is a schematic diagram of the folded state of the present invention. Figure 2 ; Figure 7 This is a partially enlarged schematic diagram of the present invention. Figure 3 .

[0019] Figure label: 1. Lid; 11. Lid body; 12. Outer lid panel; 13. Inner lid panel; 14. Outer lid panel; 15. Inner lid panel; 16. Lid lugs; 2. Box body; 21. Body piece; 22. Posterior body piece; 23. Anterior body piece; 24. Anterior body piece; 25. Body piece; 26. Posterior body auricle; 27. Anterior body auricle; 3. First longitudinal branch; 31. Outer piece of first longitudinal branch; 32. Transverse piece of first longitudinal branch; 33. Middle piece of first longitudinal branch; 34. Inner piece of first longitudinal branch; 4. Second longitudinal branch; 41. Outer piece of second longitudinal branch; 42. Transverse piece of second longitudinal branch; 43. Middle piece of second longitudinal branch; 44. Inner piece of second longitudinal branch; 7. Upper inner lining; 71. Upper lining sheet; 72. Upper serving sheet; 73. Retrieval strip; 74. Upper side baffle; 8. Lower lining; 81. Lower lining piece; 82. Lower serving piece; 83. Lower side baffle. Detailed Implementation

[0020] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0021] This embodiment provides a composite multifunctional paper box, such as Figure 1 As shown, it includes box body 2, which provides support for the entire cardboard box; Box lid 1, which can be opened and is located on the top of box body 2, is used to cover box body 2; The support body includes two longitudinal supports, which are respectively located on both sides inside the box 2 to support the box 2. The lining comprises at least two pieces, namely an upper lining 7 and a lower lining 8. Both the upper lining 7 and the lower lining 8 are connected to the longitudinal support and are located within the space enclosed by the longitudinal support. The upper lining 7 is located above the lower lining 8, and both have grooves. When the upper lining 7 and the lower lining 8 overlap, their grooves will also overlap. The upper lining 7 and the lower lining 8 are respectively connected to an upper holding piece 72, a lower holding piece 82, and a retrieval strip 73. After softening and shaping, a space for storing items is formed. A foam sheet is provided on the back of the lower inner lining 8 to support and elevate it. The thickness of the foam sheet plus the inner lining 7 and the lower inner lining 8 is equal to or less than the height of the front outer panel 23. The upper inner lining 7 and the lower inner lining 8 are folded and connected as a whole by applying adhesive and pressing or by interlocking.

[0022] The box body 2, the box lid 1, the support body, and the inner liner are integrated into one piece. The inner liner is integrated with the box body 2, so the inner liner and the box body 2 are also made of the same material, such as cardboard, corrugated paper, aluminum foil, plastic sheet, etc. In this embodiment, cardboard is selected as the material. The longitudinal stiffness of the cardboard is >8mN•m, and the transverse stiffness is >4mN•m.

[0023] The box body 2 includes a body piece 21. A rear upright piece 22 and a front outer upright piece 23 are fixedly provided on two opposite sides of the body piece 21. A rear support ear 26 is fixedly provided on both opposite sides of the rear upright piece 22. A front inner upright piece 24 is fixedly provided on the outer edge of the front outer upright piece 23. A body connecting piece 25 is fixedly provided on the outer edge of the front inner upright piece 24. A front support ear 27 is fixedly provided on both opposite sides of the front outer upright piece 23.

[0024] The lid 1 includes a lid body 11. Both sides of the lid body 11 are fixedly provided with outer lid pieces 14. The outer lid pieces 15 are fixedly provided on the outer side of the outer lid pieces 14. One side of the lid body 11 is fixedly connected to the rear upright piece 22, and the other side is fixedly provided with an outer lid upright piece 12. The outer lid upright piece 12 is fixedly provided with an inner lid upright piece 13. Both sides of the outer lid upright piece 12 are fixedly provided with lid support ears 16.

[0025] The two longitudinal supports are the first longitudinal support 3 and the second longitudinal support 4 located on opposite sides of the lid 1. The first longitudinal support 3 includes the first longitudinal support outer piece 31, the first longitudinal support cross piece 32, the first longitudinal support middle piece 33 and the first longitudinal support inner piece 34, which are fixedly connected in sequence. The first longitudinal support outer piece 31 is fixedly connected to the body piece 21, and the first longitudinal support inner piece 34 is used to connect the upper liner 7.

[0026] The second longitudinal branch 4 includes a second longitudinal branch outer piece 41, a second longitudinal branch transverse piece 42, a second longitudinal branch middle piece 43, and a second longitudinal branch inner piece 44, which are fixedly connected in sequence. The second longitudinal branch outer piece 41.

[0027] The upper inner liner 7 includes an upper liner sheet 71, on which are provided several upper holding sheets 72 separated from the upper liner sheet 71. A retrieval strip 73 separated from the upper holding sheet 72 or the upper liner sheet 71 is fixedly provided on the upper holding sheet 72. Foldable upper side baffles 74 are provided at the left and right edges of the upper liner sheet 71. After the upper liner sheet 71 overlaps with the lower liner sheet 81, the upper liner sheet 71 is on top, and the retrieval strip 73 is located on the upper surface of the overlapped upper liner sheet 71. The length of the retrieval strip 73 is greater than the arc length of the holding sheet, and one end of it is fixedly connected to the upper surface of the upper liner sheet 71, while the other end extends out of the groove formed by the holding sheet. When the product is placed in the groove, the product presses down on the retrieval strip 73, but the free end of the retrieval strip 73 protrudes outside the product. Because the product fits the groove, it is difficult to remove the product by hand. Therefore, by pulling the free end of the retrieval strip 73 to straighten it, the product can be lifted out of the groove.

[0028] The lower liner 8 includes a lower liner piece 81, on which a plurality of lower holding pieces 82 are provided. Foldable lower side baffles 83 are provided at the left and right edges of the lower liner piece 81. The opening directions of the upper holding piece 72 and the lower holding piece 82 are opposite.

[0029] After the upper container 72 and the lower container 82 are connected, they are pressed downward into the box body 2 to form a groove that can be embedded in the product.

[0030] The manufacturing method of this composite multifunctional paper box includes the following steps: S1: Design the box shape according to product requirements, including the design of the box lid 1, box body 2, first longitudinal support 3, second longitudinal support 4, upper inner liner 7, and lower inner liner 8, so that all parts of the cardboard box are located on the same printing plate and are connected to each other; the first longitudinal support 3 and the second longitudinal support 4 are located on the left and right sides of the box body 2 and are connected to the upper inner liner 7 and the lower inner liner 8 respectively, to support the upper inner liner 7 and the lower inner liner 8 from the left and right ends; for example Figure 3 As shown, the dotted lines between different parts of the cardboard box represent creases, and the solid lines represent cuts. The upper shelf 72 and the lower shelf 82 have one edge connected to their corresponding lining sheets and are folded into shape. The lengths of the upper shelf 72 and the lower shelf 82 can be adjusted according to the size of the product to adapt their shape to the product.

[0031] S2: Based on the box design drawing, make the die-cutting plate; since all parts of the cardboard box are located on the same plate, there is no need to make multiple die-cutting plates, reducing the number of die-cutting operations and the production of die-cutting plates, reducing costs and improving production efficiency.

[0032] S3: Use a die-cutting die to die-cut and creasing the substrate. After die-cutting, remove the waste edges around the edges. S4: Attach foam sheets of equal thickness (paper or other pads can also be used in this embodiment) to at least two corners on the back of the lower inner lining sheet 8. The thickness of the foam sheets plus the inner lining 7 and the lower inner lining 8 is equal to or less than the height of the front outer stand piece 23. The purpose of adding foam sheets is to support and raise the lower inner lining 8 so that there is a force point when the upper inner lining 7 and the lower inner lining 8 are pressed together. In this embodiment, at least two corners of the lower inner lining sheet 8 can also be folded according to the cutting line. The folded corners contact the body piece 21 to support the lower inner lining sheet 8. S5: Apply glue. Apply glue to the overlapping side of the upper inner liner 7 and the lower inner liner 8 after folding and press them together. In this embodiment, glue can be applied by dotting or printing glue locally to connect the two into a whole. Apply glue to the contact area between the liner and the inner side of the box body 2 to bond the liner to the box body 2. S6. Perform secondary glue application, apply glue to the overlapping area of ​​the corresponding upper container 72 and lower container 82, and press the two connected pieces downward into the box body 2 to form a groove for product embedding. S7: Soften the connected upper and lower holding sheets 72; high-temperature steam can be used to soften the connected sheets at a temperature of 100-150℃, or a softening liquid can be applied to the sheets. The inner lining is made of flexible cardboard, which has good extensibility and is easier to soften and shape.

[0033] S8: The upper holding sheet 72 and the lower holding sheet 82 are connected by extrusion using a high-temperature flexible stamping head. The extrusion pressure is 10-25MP. The connected upper holding sheet 72 and the lower holding sheet 82 are deformed by extrusion to form a shaped item fixing area that can accommodate products. S9: Fold the various parts of the cardboard box to form the shape of the cardboard box.

[0034] When folding, refer to Figures 2-4 Fold the outer cover 14, inner cover 15, outer cover stand 12, and inner cover stand 13 inwards respectively, apply glue to the folded surfaces, and insert the cover lugs 16 into the folded surfaces of the outer cover 14 and inner cover 15 and press them together to form a shape as shown. Figure 2 and Figure 4 The box lid 1 shown.

[0035] refer to Figure 4 and Figure 5 ,according to Figure 5 As shown, fold the box in half. Figure 4 Shape, reference Figure 7 Fold the first longitudinal branch 3 and the second longitudinal branch 4 into Figure 6 The shape; fold up the front support ears 27 on both sides and glue them to the first longitudinal support 3 and the second longitudinal support 4.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A composite multifunctional paper box, characterized in that, include: Box body (2), which provides support for the entire cardboard box; The lid (1) is openable and located on the top of the box body (2) to cover the box body (2). The support body includes two longitudinal supports, which are respectively located on both sides inside the box (2) to support the box (2). The lining comprises at least two pieces, namely an upper lining (7) and a lower lining (8). Both the upper lining (7) and the lower lining (8) are connected to the longitudinal support and are located within the space enclosed by the longitudinal support. The upper lining (7) is located above the lower lining (8), and both have grooves. When the upper lining (7) and the lower lining (8) overlap, their grooves will also overlap. The upper lining (7) and the lower lining (8) are respectively connected to an upper holding piece (72), a lower holding piece (82), and a picking strip (73). After softening and shaping, a space for storing items is formed. The box body (2), the lid (1), the support body, and the inner lining are integrated into one piece.

2. The composite multifunctional paper box according to claim 1, characterized in that, The box body (2) includes a body piece (21), on which a rear upright piece (22) and a front outer upright piece (23) are fixedly provided on two opposite sides respectively. A rear support ear (26) is fixedly provided on both opposite sides of the rear upright piece (22). A front inner upright piece (24) is fixedly provided on the outer edge of the front outer upright piece (23). A body connecting piece (25) is fixedly provided on the outer edge of the front inner upright piece (24). A front support ear (27) is fixedly provided on both opposite sides of the front outer upright piece (23). The lid (1) includes a lid body (11), on both sides of the lid body (11) are fixedly provided with outer lid pieces (14), and on the outside of the outer lid pieces (14) are fixedly provided with inner lid pieces (15). One side of the lid body (11) is fixedly connected to the rear upright piece (22), and on the other side is fixedly provided with an outer lid upright piece (12). On the outside of the outer lid upright piece (12) are fixedly provided with an inner lid upright piece (13), and on both sides of the outer lid upright piece (12) are fixedly provided with lid support ears (16).

3. The composite multifunctional paper box according to claim 2, characterized in that, The two longitudinal supports are the first longitudinal support (3) and the second longitudinal support (4) located on opposite sides of the lid (1). The first longitudinal support (3) includes the first longitudinal support outer piece (31), the first longitudinal support cross piece (32), the first longitudinal support middle piece (33) and the first longitudinal support inner piece (34) arranged in sequence. The first longitudinal support outer piece (31) is fixedly connected to the body piece (21), and the first longitudinal support inner piece (34) is used to connect the upper liner (7). The second longitudinal support (4) includes a second longitudinal support outer piece (41), a second longitudinal support transverse piece (42), a second longitudinal support middle piece (43), and a second longitudinal support inner piece (44) arranged in sequence and fixedly connected. The second longitudinal support outer piece (41) is fixedly connected to the body piece (21), and the second longitudinal support inner piece (44) is used to connect the lower liner (8).

4. The composite multifunctional paper box according to claim 1, characterized in that, The back of the lower inner liner (8) is provided with a foam sheet for supporting and elevating the lower inner liner (8).

5. The composite multifunctional paper box according to claim 1, characterized in that, The thickness of the foam sheet plus the inner lining (7) and the lower inner lining (8) is equal to or less than the height of the front outer panel (23).

6. The composite multifunctional paper box according to claim 1, characterized in that, The upper inner lining (7) and the lower inner lining (8) are folded and then connected as a whole by applying glue and pressing or by interlocking with each other.

7. The composite multifunctional paper box according to claim 1, characterized in that, The upper inner liner (7) includes an upper liner sheet (71), on which a plurality of upper holding sheets (72) separated from the upper liner sheet (71) are provided, and on which the upper holding sheet (72) is fixedly provided a taking strip (73) separated from the upper holding sheet (72) or the upper liner sheet (71), and foldable upper side baffles (74) are provided at the left and right edges of the upper liner sheet (71).

8. The composite multifunctional paper box according to claim 1, characterized in that, The lower liner (8) includes a lower liner piece (81), on which a plurality of lower holding pieces (82) are provided. Foldable lower side baffles (83) are provided at the left and right edges of the lower liner piece (81). The opening directions of the upper holding piece (72) and the lower holding piece (82) are opposite.

9. The composite multifunctional paper box according to claim 1, characterized in that, After the upper container (72) and the lower container (82) are connected, they are pressed downward into the box body (2) to form a groove that can be embedded in the product.

10. A method for manufacturing a composite multifunctional paper box, applicable to the composite multifunctional paper box described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1: Design the box according to the product requirements so that all parts of the box are on the same plate and there is a connection between each part. The depth of the holding area can be adjusted according to the length of the upper holding piece (72) and the lower holding piece (82) during the design. S2: Based on the box design drawing, create the die-cutting template; S3: Use a die-cutting die to die-cut and creasing the substrate. After die-cutting, remove the waste edges around the edges. S4: Attach foam sheets of equal thickness to at least two corners on the back of the lower inner lining sheet (8); S5: Apply glue to the overlapping side of the upper inner lining (7) and the lower inner lining (8) after folding and press them together to connect them into a whole. S6. Perform secondary glue application to connect the overlapping area of ​​the upper container sheet (72) and the lower container sheet (82), and press the two connected pieces downward into the box body (2) to form a groove for product embedding. S7: Soften the connected upper container (72) and lower container (82); S8: The upper container (72) and lower container (82) after connection are shaped; S9: Fold the various parts of the cardboard box to form the shape of the cardboard box.

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