Corrugated cardboard and corrugated cardboard packaging box

Abstract

The present invention discloses a corrugated paperboard and a corrugated paperboard packaging box thereof, and specifically relates to the field of corrugated paperboard box production, comprising a paper core layer and a surface layer, wherein the two sides of the paper core layer are respectively bonded with fluting layers, the outer sides of the fluting layers are bonded with the surface layer, the surface layer comprises waterproof molecules, the packaging box comprises side panels, a cover plate 1 and a cover plate 2, the upper and lower sides of the side panels are bent and connected with the cover plate 1 and the cover plate 2, the cover plate 1 and the cover plate 2 are adjacently arranged, a strip board is bonded to the cover plate 1, a plug nail is fixedly connected to the strip board, the plug nail and the strip board are respectively located on the two sides of the cover plate 1, a clamping hole is opened on the cover plate 2, and the clamping hole is located on the moving path of the corresponding plug nail, and the corrugated paperboard box made of specially made corrugated paperboard with high strength, high toughness and waterproof performance expands the use range of the paperboard box, prolongs the service life of the paperboard box, and improves the convenience of opening and closing the packaging box.

Description

Technical Field

[0001] The present invention relates to the field of corrugated paperboard production, and more specifically, to a corrugated paperboard and a corrugated paperboard packaging box thereof. Background Art

[0002] Corrugated cardboard is made into corrugated boxes through die-cutting, creasing, nailing or gluing. Corrugated boxes are the most widely used packaging products, and the usage has always been the first among all kinds of packaging products. Including calcium plastic corrugated boxes. For more than half a century, corrugated boxes have gradually replaced wooden boxes and other transport packaging containers with their superior performance and good processing performance, becoming the main force of transport packaging. In addition to protecting goods and facilitating storage and transportation, it also plays a role in beautifying and promoting goods. Corrugated boxes are green and environmentally friendly products, which are beneficial to the environment and convenient for loading and unloading.

[0003] However, the strength and toughness of existing corrugated cardboard packaging boxes are not high enough, and their waterproof performance is not good enough, which limits the scope of application of corrugated cardboard. In addition, after the existing corrugated cardboard is closed, it is often necessary to use tape to seal the cover, which is inconvenient to use. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a corrugated cardboard and a corrugated cardboard packaging box thereof. The technical problem to be solved by the present invention is that the strength and toughness of the existing corrugated cardboard packaging box are not high enough, and its waterproof performance is not good enough, which leads to the limitation of the application scope of the corrugated cardboard. Moreover, after the existing corrugated cardboard is closed, it is often necessary to use tape to seal the cover plate, which is inconvenient to use.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a corrugated paperboard, comprising a paper core layer and a surface layer, wherein the two sides of the paper core layer are respectively bonded with flute layers, and the outer side of the flute layer is bonded with a surface layer, and the surface layer includes waterproof molecules; the combination of the paper core layer, the surface layer and the flute layer can greatly improve the bending strength of the corrugated paperboard, and in addition, the combination of the surface layer and the waterproof molecules can further improve the durability of the design in a humid environment and extend the service life of the design. It can be known that the paper core layer and the flute layer are set as a main body component, and by setting a single-layer main body component, a three-layer main body component, a five-layer main body component or a seven-layer main body component, and then bonding the top layer to both sides of the main body component, corrugated paperboard with different thicknesses can be finally made.

[0006] The method for making the paper core layer comprises:

[0007] S1: Crush the waste paper into slag and remove impurities; Crush the waste paper into long strips of slag to fully retain the length of the fibers.

[0008] S2: Add water into the waste paper residue and stir to make slurry; stir the slurry into a paste.

[0009] S3: The slurry is put into a fiber separator to obtain fibers of different lengths; under continuous stirring, the fibers inside the paste-like waste paper residue will gradually disperse and become fibers or fiber bundles.

[0010] S4: Separate fibers of different lengths to obtain long fiber slurry; obtain long fibers with larger mass by centrifugal separation, and mix the long fibers with slurry without fibers to obtain long fiber slurry.

[0011] S5: adding epoxy glue to the long fiber slurry, the ratio of the long fiber slurry to the epoxy glue is 80:1; the epoxy glue can increase the hardness of the paper core layer made of the long fibers after the long fibers are dried, and the long fibers themselves can also play a certain supporting role. Therefore, compared with the prior art, the above method can obtain a paper core layer with better hardness and toughness.

[0012] S6: Stabilize the long fiber slurry and then make paper;

[0013] S7: The wet paper sheets after papermaking are sent into a paper machine to obtain a paper core layer.

[0014] The method for making the surface layer comprises:

[0015] S24: obtaining short fiber slurry from S3;

[0016] S25: adding a waterproofing agent to the short fiber slurry, mixing and stirring evenly, wherein the ratio of the short fiber slurry to the waterproofing agent is 50:1;

[0017] S26: Stabilizing the short fiber slurry and then making paper;

[0018] S27: The wet paper sheets after papermaking are sent into a paper machine to obtain a surface layer.

[0019] Preferably, the length of the long fibers is greater than 50 mm, and the length of the short fibers is greater than 20 mm and less than 50 mm.

[0020] Preferably, the packaging box includes side panels, cover panel 1 and cover panel 2, the upper and lower sides of the side panels are bent and connected with cover panel 1 and cover panel 2, cover panel 1 and cover panel 2 are arranged adjacent to each other, a strip panel is bonded to cover panel 1, a pin is fixedly connected to the strip panel, the pin and the strip panel are respectively located on both sides of cover panel 1, a card hole is opened on cover panel 2, and the card hole is located on the corresponding moving path of the pin.

[0021] Preferably, the front and rear ends of the side panels are connected by bent nails.

[0022] Preferably, a support member is fixedly connected to the strip, a pin is fixedly connected to the support member, and the support member is a bending structure.

[0023] Preferably, a clamp is fixedly connected to the plug pin, and the clamp is provided with multiple layers of stepped side edges along the busbar direction.

[0024] Preferably, the lengths of the clamping holes located on the two most sides from the two corresponding sides of the cover plate are 5 mm.

[0025] Technical effects and advantages of the present invention: The present invention expands the scope of use of the carton and prolongs the service life of the carton by making a corrugated cardboard box specially made of corrugated cardboard with high strength, high toughness and waterproof performance. In addition, through the provision of the pins, the corrugated cardboard box can achieve the purpose of closing cover plate one and cover plate two without the aid of tape, and can be opened and closed any number of times when necessary, thereby improving the convenience of opening and closing the packaging box. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a structural schematic diagram of a corrugated cardboard packaging box.

[0027] Figure 2 It is a schematic diagram of the structure of the plug nail of the present invention.

[0028] The accompanying drawings are marked as follows:

[0029] 1. Side panel; 2. Cover plate 1; 3. Cover plate 2; 4. Strip plate; 5. Clamp hole; 6. Pin; 7. Clamp head; 8. Support part. DETAILED DESCRIPTION

[0030] Embodiment 1

[0031] A corrugated paperboard comprises a paper core layer and a surface layer, wherein flute layers are respectively bonded to the two sides of the paper core layer, and a surface layer is bonded to the outer side of the flute layer, wherein the surface layer comprises waterproof molecules; the paper core layer, the surface layer and the flute layer are used in combination to greatly improve the bending strength of the corrugated paperboard, and in addition, the combination of the surface layer and the waterproof molecules can further improve the durability of the design in a humid environment and extend the service life of the design. It can be known that the paper core layer and the flute layer are set as a body component, and by arranging a single-layer body component, a three-layer body component, a five-layer body component or a seven-layer body component, and then bonding the top layer to the two sides of the body component, corrugated paperboards of different thicknesses can be finally made.

[0032] The method for making the paper core layer comprises:

[0033] S1: Crush the waste paper into slag and remove impurities; Crush the waste paper into long strips of slag to fully retain the length of the fibers.

[0034] S2: Add water into the waste paper residue and stir to make slurry; stir the slurry into a paste.

[0035] S3: The slurry is put into a fiber separator to obtain fibers of different lengths; under continuous stirring, the fibers inside the paste-like waste paper residue will gradually disperse and become fibers or fiber bundles.

[0036] S4: Separate fibers of different lengths to obtain long fiber slurry; obtain long fibers with larger mass by centrifugal separation, and mix the long fibers with slurry without fibers to obtain long fiber slurry.

[0037] S5: adding epoxy glue to the long fiber slurry, the ratio of the long fiber slurry to the epoxy glue is 80:1; the epoxy glue can increase the hardness of the paper core layer made of the long fibers after the long fibers are dried, and the long fibers themselves can also play a certain supporting role. Therefore, compared with the prior art, the above method can obtain a paper core layer with better hardness and toughness.

[0038] S6: Stabilize the long fiber slurry and then make paper;

[0039] S7: The wet paper sheets after papermaking are sent into a paper machine to obtain a paper core layer.

[0040] The method for making the surface layer comprises:

[0041] S24: obtaining short fiber slurry from S3;

[0042] S25: adding a waterproofing agent to the short fiber slurry, mixing and stirring evenly, wherein the ratio of the short fiber slurry to the waterproofing agent is 50:1;

[0043] S26: Stabilizing the short fiber slurry and then making paper;

[0044] S27: feeding the wet paper sheets after papermaking into the paper machine to obtain the surface layer. In the short fiber slurry, when the short fibers are made into the surface layer, there will be more space between adjacent short fibers to accommodate the waterproofing agent, so that the waterproofing molecules in the waterproofing agent can be accommodated in the gaps between the short fibers as much as possible, thereby improving the waterproofing effect of the surface layer.

[0045] The length of the long fiber is more than 50 mm, and the length of the short fiber is greater than 20 mm and less than 50 mm. In this design, 50 mm is the dividing point for the classification of long fibers and short fibers. In actual use, the user can choose a suitable dividing point by himself, and this embodiment does not make any specific limitation here.

[0046] Embodiment 2

[0047] See also Figure 1 and Figure 2On the basis of the above embodiment, a corrugated cardboard packaging box is made of the corrugated cardboard described in the first embodiment, and the packaging box includes a side panel 1, a cover panel 2 and a cover panel 3. The upper and lower sides of the side panel 1 are both bent and connected with the cover panel 2 and the cover panel 3. The cover panel 2 and the cover panel 3 are arranged adjacent to each other. The cover panel 2 is bonded with a strip board 4, and a plug nail 6 is fixedly connected to the strip board 4. The plug nail 6 and the strip board 4 are respectively located on both sides of the cover panel 2. The cover panel 2 is provided with a clamping hole 5, and the clamping hole 5 is located on the corresponding moving path of the plug nail 6. The adjacent edges on the upper and lower sides of the side panel 1 are respectively bent and connected with the cover panel 1 or the cover panel 2 3. First, the cover panel 2 3 is folded, and then the cover panel 1 is folded, and the cover panel 1 is folded onto the cover panel 2 3, so that the punching device punches holes in the cover panel 1 and the cover panel 2 3 at the same time, and then the cover panel 1 can drive the plug nail 6 to just fit into the corresponding clamping hole 5. During the specific production, after the side panel 1, cover panel 1 2 and cover panel 2 3 are formed, a plurality of clamping holes 5 are punched on cover panel 1 2 and cover panel 2 3 at the same time, and then the strip plate 4 is pasted on the surface of cover panel 1 2 according to a certain installation reference, so that the plug nail 6 can pass through the cover panel 1 2, and the strip plate 4 and the plug nail 6 are respectively located on both sides of the cover panel 1 2.

[0048] The front and rear ends of the side panels 1 are connected by bent nails. The bent nails can connect the front and rear ends of the side panels 1 on the one hand, and on the other hand, the bent nails have stronger connection stability than glue.

[0049] The strip plate 4 is fixedly connected with a support member 8, and the support member 8 is fixedly connected with a plug pin 6, and the support member 8 is a bent structure. After the cover plate 1 2 is covered on the cover plate 2 3, the user presses the plug pin 6 downward so that the plug pin 6 can be inserted into the card hole 5. During the downward movement of the plug pin 6, the inclination angle of the bend of the support member 8 changes, so that the plug pin 6 can move in the vertical direction, reducing the interference between the strip plate 4 and the plug pin 6. Before the plug pin 6 is pressed into the card hole 5, the support member 8 can play a role in supporting and adjusting the plug pin 6, so that the plug pin 6 can adjust its position within a small range on the upper side of the card hole 5, thereby increasing the success rate of the plug pin 6 being successfully inserted into the card hole 5.

[0050] The plug pin 6 is fixedly connected with a clamp head 7, and the clamp head 7 is provided with multiple layers of stepped side edges along the busbar direction. The clamp head 7 can be connected with the clamp hole 5, thereby improving the covering stability between the cover plate 1 2 and the cover plate 2 3, and preventing objects in the side plate 1 from pushing the cover plate 1 2 and the cover plate 2 3 apart.

[0051] The length of the clamping holes 5 located at the two most sides from the corresponding sides of the cover plate 2 3 is 5 mm. By setting a reference benchmark, the convenience and accuracy of opening the clamping holes 5 can be improved.

[0052] In summary, the present invention expands the scope of use of the carton and prolongs the service life of the carton by using a corrugated cardboard box specially made of corrugated cardboard with high strength, high toughness and waterproof performance. In addition, through the provision of the plug pin 6, the corrugated cardboard box can achieve the purpose of closing the cover plate 1 2 and the cover plate 2 3 without the aid of tape, and can be opened and closed any number of times when necessary, thereby improving the convenience of opening and closing the packaging box.

Claims

1. A corrugated cardboard packaging box, characterized in that: The packaging box comprises a side panel (1), a cover panel 1 (2) and a cover panel 2 (3); the upper and lower sides of the side panel (1) are both bent and connected to the cover panel 1 (2) and the cover panel 2 (3); the cover panel 1 (2) and the cover panel 2 (3) are arranged adjacent to each other; a strip panel (4) is bonded to the cover panel 1 (2); a plug nail (6) is fixedly connected to the strip panel (4); the plug nail (6) and the strip panel (4) are respectively located on the two sides of the cover panel 1 (2); a clamping hole (5) is opened on the cover panel 2 (3); the clamping hole (5) is located on the moving path of the corresponding plug nail (6); a support member (8) is fixedly connected to the strip panel (4); the plug nail (6) is fixedly connected to the support member (8); the support member (8) is a bent structure; The packaging box is made of corrugated paperboard, which includes a paper core layer and a surface layer. The two sides of the paper core layer are bonded with corrugated layers, and the outer side of the corrugated layer is bonded with a surface layer. The surface layer includes waterproof molecules. The method for making the paper core layer comprises: S1: crush waste paper into slag and remove impurities; S2: Add water into the waste paper residue and stir to make a slurry; S3: putting the slurry into a fiber separator to obtain fibers of different lengths; S4: Separate the fibers of different lengths to obtain long fiber slurry; S5: adding epoxy glue into the long fiber slurry, the ratio of the long fiber slurry to the epoxy glue is 80:1; S6: Stabilize the long fiber slurry and then make paper; S7: feeding the wet paper sheets after papermaking into a paper machine to obtain a paper core layer; The method for making the surface layer comprises: S24: obtaining short fiber slurry from S3; S25: adding a waterproofing agent to the short fiber slurry, mixing and stirring evenly, wherein the ratio of the short fiber slurry to the waterproofing agent is 50:1; S26: Stabilizing the short fiber slurry and then making paper; S27: feeding the wet paper sheets after papermaking into a paper machine to obtain a surface layer; The length of the long fibers is greater than 50 mm, and the length of the short fibers is greater than 20 mm and less than 50 mm.

2. A corrugated cardboard packaging box according to claim 1, characterized in that: The front and rear ends of the side panels (1) are connected via bent nails.

3. A corrugated cardboard packaging box according to claim 2, characterized in that: A clamping head (7) is fixedly connected to the plug pin (6), and the clamping head (7) is provided with multiple layers of stepped side edges along the busbar direction.

4. A corrugated cardboard packaging box according to claim 3, characterized in that: The lengths of the clamping holes (5) located at the two most sides from the two corresponding sides of the cover plate (3) are 5 mm.

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