Tear-resistant structure of paperboard

Abstract

The utility model discloses an anti-tearing structure of a paperboard, which belongs to the technical field of paper products, aims to solve the problems that the stable folding state after folding is difficult to keep and the structure is more complicated, and comprises a paperboard body, an anti-tearing mechanism is arranged in the paperboard body and comprises a reinforcing layer paperboard, the reinforcing layer paperboard is arranged in the paperboard body, second protruding parts are symmetrically arranged on the upper portion and the lower portion of the reinforcing layer paperboard, second matching grooves are formed in the reinforcing layer paperboard and formed in the joints of the second protruding parts and the reinforcing layer paperboard, and force releasing plates are arranged in the reinforcing layer paperboard and correspond to the second protruding parts; by means of the arranged anti-tearing mechanism, in the folding process of the paperboard body, the folding state can be stably kept, meanwhile, tearing of the paperboard body in the folding process is avoided, the internal structure of the paperboard is relatively simple, the production and processing cost of the paperboard is reduced, and production and use are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper products, and in particular relates to a tear-resistant structure of a paperboard. Background Art

[0002] Cardboard is a versatile and important paper product. With its unique thickness, hardness and strength, it is widely used in packaging, printing and handicrafts. Cardboard is usually made of wood pulp, waste paper or recycled fiber, and is processed by various processes such as lamination, coating and embossing to enhance its performance. Different types of cardboard, such as coated cardboard, corrugated cardboard and white cardboard, have different characteristics and uses, meeting the needs of different industries. Cardboard plays a key role in the packaging industry. It can protect goods from damage during transportation and storage, while providing beautiful display effects. In addition, cardboard is also a common substrate for printed products and handicrafts, providing solid support and rich expression for these products. With the improvement of environmental awareness, the production and recycling of cardboard has also received more and more attention. By using recyclable and environmentally friendly cardboard materials, enterprises can not only reduce production costs, but also contribute to environmental protection. Therefore, cardboard is not only a practical material, but also an important force in promoting sustainable development and environmental protection.

[0003] The patent announcement number of the prior art is CN219385811U, which is an environmentally friendly paperboard with strong tear resistance. The above patent includes an environmentally friendly paperboard with strong tear resistance, and its structure includes corrugated paperboard, a first pressure-resistant layer, a second pressure-resistant layer, and a buffer layer. The corrugated paperboard is provided with a buffer layer toward the center side, a first pressure-resistant layer is provided on one side of the buffer layer, and a second pressure-resistant layer is provided on one side of the first pressure-resistant layer. A force-bearing plate is connected to one side of the buffer layer, and an arc-shaped convex plate arranged in a curve on the force-bearing plate contacts the spring plate. When external force is applied, the arc-shaped convex plate contacts the spring plate at multiple points, thereby reducing the force on the spring plate. The invention relates to a device for making a cardboard with a plurality of spring plates made of graphene material. The cardboard can be made to rebound by its own properties even if it is bent by force. In this way, the cardboard will not be wrinkled or damaged due to the force, so as to improve the tear resistance of the cardboard. However, the invention still has the following shortcomings in actual use: from a practical point of view, when the cardboard is used, if it needs to be folded, it is difficult to keep it in a stable folded state after folding, so that it is not convenient to fold it, which reduces the practicability of the device. At the same time, its structure is relatively complicated, which increases the cost of production and processing.

[0004] Therefore, a tear-resistant structure of paperboard is needed to solve the problems existing in the prior art that it is difficult to maintain a stable folded state after folding and the structure is relatively complicated. Utility Model Content

[0005] The purpose of the utility model is to provide a tear-resistant structure of paperboard to solve the problems raised in the above background technology.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tear-resistant structure of a paperboard, comprising a paperboard body, wherein an anti-tear mechanism is arranged inside the paperboard body.

[0007] The anti-tear mechanism includes a reinforcing layer of paperboard, which is arranged inside the paperboard body. The reinforcing layer of paperboard is symmetrically provided with second protrusions at the upper and lower parts. A second matching groove is provided on the reinforcing layer of paperboard and is provided at the intersection of the second protrusion and the reinforcing layer of paperboard. A force release plate is provided inside the reinforcing layer of paperboard and is arranged corresponding to the second protrusion.

[0008] It should be noted in the scheme that the second protrusions are arranged at intervals on the upper and lower parts of the reinforcing layer of paperboard and are provided in plurality, and the second matching grooves are matched and provided at the intervals between the second protrusions to facilitate finger jointing between the upper paperboard and the bottom paperboard, thereby improving the tear resistance between the two.

[0009] It is further worth mentioning that the force release plate is provided with a folded line groove, and is vertically matched in the reinforcing layer paperboard to facilitate deformation during bending, thereby ensuring the stability of the reinforcing layer paperboard and preventing it from bending and tearing.

[0010] It should be further explained that the paperboard body includes an upper paperboard and a lower paperboard, the upper paperboard is arranged on the upper part of the reinforcing paperboard, the lower paperboard is arranged on the lower part of the reinforcing paperboard, and a waterproof layer is arranged on one side of the outer side of the upper paperboard and the lower paperboard.

[0011] As a preferred embodiment, the upper cardboard and the bottom cardboard are symmetrically arranged at the upper and lower parts of the reinforcing cardboard, and the upper cardboard and the bottom cardboard are respectively provided with first protrusions on the second matching grooves close to the reinforcing cardboard side, and a flexible board is arranged in the first protrusions, and the upper cardboard and the bottom cardboard are provided with first matching grooves on the second matching protrusions.

[0012] As a preferred implementation, the first protrusion is arranged to match the second matching groove.

[0013] Compared with the prior art, the tear-resistant structure of paperboard provided by the utility model has at least the following beneficial effects:

[0014] (1) By setting up the anti-tearing mechanism, the folded state can be maintained relatively stably during the folding process of the cardboard body, while avoiding the cardboard body from being torn during the folding process, thereby improving practicality.

[0015] (2) By combining the paperboard body with the anti-tear mechanism, the internal structure is relatively simple, so as to enhance the tear resistance and improve the bending ability, thereby reducing the cost of production and processing, and facilitating production and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal cutaway structure of the utility model;

[0018] Figure 3 for Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a schematic diagram of the split structure of the utility model.

[0020] In the figure: 1. cardboard body; 101. upper cardboard; 102. waterproof layer; 103. bottom cardboard; 104. first matching groove; 105. first protrusion; 106. flexible board; 2. anti-tear mechanism; 201. reinforcing layer cardboard; 202. second protrusion; 203. second matching groove; 204. release plate. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the embodiments.

[0022] See also Figure 1-4 The utility model provides a tear-resistant structure of a paperboard, comprising a paperboard body 1, wherein an anti-tear mechanism 2 is arranged inside the paperboard body 1.

[0023] The anti-tear mechanism 2 includes a reinforcing layer cardboard 201, which is arranged inside the cardboard body 1. The reinforcing layer cardboard 201 is symmetrically provided with a second protrusion 202 at the upper and lower parts. The reinforcing layer cardboard 201 is provided with a second matching groove 203 and is arranged at the intersection of the second protrusion 202 and the reinforcing layer cardboard 201. A force release plate 204 is arranged in the reinforcing layer cardboard 201 and is arranged corresponding to the second protrusion 202.

[0024] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth explaining in detail that the second protrusions 202 are arranged at intervals on the upper and lower parts of the reinforcing layer paperboard 201 and are provided in plurality, and the second matching grooves 203 are matched and provided at the intervals between the second protrusions 202, so as to form finger joints with the upper paperboard 101 and the bottom paperboard 103, thereby improving the tear resistance between the two.

[0025] Further as Figure 2 , Figure 3and Figure 4 As shown, it is worth explaining in detail that a fold line groove is provided on the force release plate 204 and is vertically matched in the reinforcing layer paperboard 201 to facilitate deformation during bending, thereby ensuring the stability of the reinforcing layer paperboard 201 and preventing it from bending and tearing.

[0026] The grooves provided on the force release plate 204 can help the reinforcing paperboard 201 at the bending portion to maintain its performance and prevent the reinforcing paperboard 201 from being torn at the bending portion. In addition, the second protruding portion 202 is provided, and the upper paperboard 101 and the bottom paperboard 103 are finger-jointed by the first protruding portion 105 and the second matching groove 203, respectively, to further improve their tensile resistance, thereby improving the tearing strength of the paperboard body 1.

[0027] According to the above working process, it can be known that: through the anti-tear mechanism 2, during the folding process of the cardboard body 1, the folded state can be maintained relatively stably, and at the same time, the cardboard body 1 can be prevented from being torn during the folding process, thereby improving practicality. The second protrusions 202 are arranged at intervals on the upper and lower parts of the reinforcing layer cardboard 201 and are provided in plurality. The second matching grooves 203 are matched and provided at the intervals between the second protrusions 202, so as to form finger joints with the upper cardboard 101 and the bottom cardboard 103, thereby improving the tear resistance between the two. The force release plate 204 is provided with a broken line groove, and is vertically matched and provided in the reinforcing layer cardboard 201, so as to facilitate deformation during bending, thereby ensuring the stability of the reinforcing layer cardboard 201, preventing it from bending and tearing, and further ensuring tear resistance.

[0028] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth specifically explaining that the paperboard body 1 includes an upper paperboard 101 and a bottom paperboard 103, the upper paperboard 101 is arranged on the upper part of the reinforcing paperboard 201, and the bottom paperboard 103 is arranged on the lower part of the reinforcing paperboard 201, and a waterproof layer 102 is arranged on one side of the outer side of the upper paperboard 101 and the bottom paperboard 103, and the upper paperboard 101 and the bottom paperboard 103 are symmetrically arranged at the upper and lower parts of the reinforcing paperboard 201, and the upper paperboard 101 and the bottom paperboard 103 are respectively provided with a first protrusion 105 near the second matching groove 203 on one side of the reinforcing paperboard 201, and a flexible board 106 is arranged in the first protrusion 105, and a first matching groove 104 is opened on the upper paperboard 101 and the bottom paperboard 103 to match the second protrusion 202, and the first protrusion 105 is arranged to match the second matching groove 203, and its waterproof performance is improved by the waterproof layer 102.

[0029] During the bending process of the paperboard body 1, since the flexible board 106 is arranged on the reinforcing layer paperboard 201 through the first protrusion 105 matching the second matching groove 203, the flexible board 106 of the bending part is squeezed in the first protrusion 105 by the second protrusions 202 on both sides to be flexibly bent, and at the same time, the other aligned flexible board 106 is bent by being squeezed by the reinforcing layer paperboard 201, and this bending radius is greater than the bending radius of the flexible board 106 of the bending part, thereby increasing the bending radius of the upper paperboard 101, thereby ensuring the bending property of the upper paperboard 101 and preventing tearing. At the same time, through the bending of the flexible board 106, it is easy to keep the bending stability of the paperboard body 1 after bending, so as to facilitate folding and use, thereby improving its practicality.

[0030] The scheme has the following working process: when the device is used, during the bending process of the paperboard body 1, since the flexible board 106 is arranged on the reinforcing layer paperboard 201 through the first protrusion 105 matching the second matching groove 203, the flexible board 106 of the bending part is squeezed into the first protrusion 105 by the second protrusions 202 on both sides to be flexibly bent, and at the same time, the other flexible board 106 is squeezed by the reinforcing layer paperboard 201 to be bent, and the bending radius is greater than the bending radius of the flexible board 106 of the bending part, thereby increasing the bending radius of the upper paperboard 101, thereby ensuring the upper paperboard The bendability of the board 101 prevents tearing. At the same time, the bending of the flexible board 106 facilitates the bending stability of the paperboard body 1 after bending, thereby improving its stability. The grooves provided on the force release plate 204 facilitate the performance of the reinforcing layer paperboard 201 at the bending portion, thereby preventing the reinforcing layer paperboard 201 from tearing at the bending portion. In addition, through the provision of the second protruding portion 202, the upper paperboard 101 and the bottom paperboard 103 are respectively finger-jointed by the first protruding portion 105 and the second matching groove 203, thereby further improving their tensile resistance, thereby improving the tearing strength of the paperboard body 1.

[0031] In summary: by setting up the anti-tear mechanism 2, during the folding process of the cardboard body 1, the folded state can be maintained relatively stably, while avoiding the cardboard body 1 from being torn during the folding process, thereby improving practicality; by setting up the cardboard body 1 with the anti-tear mechanism 2, its internal structure is relatively simple, so as to achieve enhanced tear resistance and improved bending ability, thereby reducing its production and processing costs, and facilitating production and use.

Claims

1. A tear-resistant structure of paperboard, comprising a paperboard body (1), characterized in that: The paperboard body (1) is provided with an anti-tearing mechanism (2) inside; The anti-tearing mechanism (2) comprises a reinforcing paperboard layer (201), the reinforcing paperboard layer (201) being arranged inside the paperboard body (1), the reinforcing paperboard layer (201) being symmetrically provided with second protruding portions (202) at the upper and lower parts, the reinforcing paperboard layer (201) being provided with a second matching groove (203) being arranged on the reinforcing paperboard layer (201) and being arranged at the intersection of the second protruding portion (202) and the reinforcing paperboard layer (201), and a force release plate (204) being arranged inside the reinforcing paperboard layer (201) and being arranged corresponding to the second protruding portion (202).

2. The tear-resistant structure of paperboard according to claim 1, characterized in that: The second protruding portions (202) are arranged at intervals on the upper and lower parts of the reinforcing layer paperboard (201), and a plurality of them are provided. The second matching grooves (203) are matched and arranged at the intervals between the second protruding portions (202).

3. The tear-resistant structure of paperboard according to claim 1, characterized in that: The force release plate (204) is provided with a folded line groove and is vertically matched in the reinforcing layer paperboard (201).

4. The tear-resistant structure of paperboard according to claim 1, characterized in that: The paperboard body (1) comprises an upper paperboard (101) and a lower paperboard (103), wherein the upper paperboard (101) is arranged on the upper part of the reinforcing paperboard (201), and the lower paperboard (103) is arranged on the lower part of the reinforcing paperboard (201), and a waterproof layer (102) is arranged on one side of the outer side of the upper paperboard (101) and the lower paperboard (103).

5. The tear-resistant structure of paperboard according to claim 4, characterized in that: The upper paperboard (101) and the bottom paperboard (103) are symmetrically arranged at the upper and lower parts of the reinforcing paperboard (201); the upper paperboard (101) and the bottom paperboard (103) are respectively provided with a first protruding portion (105) on one side of the reinforcing paperboard (201) to match the second matching groove (203); a flexible board (106) is arranged inside the first protruding portion (105); and the upper paperboard (101) and the bottom paperboard (103) are provided with a first matching groove (104) to match the second protruding portion (202).

6. The tear-resistant structure of paperboard according to claim 5, characterized in that: The first protrusion (105) is arranged to match the second matching groove (203).

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