Three-dimensional atomization sizing high-plasticization paperboard

Abstract

The utility model relates to the technical field of paperboards, in particular to a three-dimensional atomization sizing high-plasticization paperboard which comprises an upper paperboard, corrugated paper, a lower paperboard and a glue layer. The corrugated paper is arranged between the upper paperboard and the lower paperboard; the corrugated paper comprises a plurality of corrugated grooves; a plurality of pressing grooves are formed in the upper end of the upper paperboard and the lower end of the lower paperboard; the length direction of the pressing grooves is perpendicular to the length direction of corrugated grooves of the corrugated paper. The glue layers are coated on the upper end face of the upper paperboard and the lower end face of the lower paperboard, and the pressing grooves are filled with the glue layers. The warping resistance of the paperboard can be improved, and follow-up processing is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of paperboards, and specifically relates to a three-dimensional atomized glue-applied high-plasticized paperboard. Background Art

[0002] Papermaking sizing is a process in which sizing agents are added to the pulp or applied to the surface of paper and paperboard to enhance the paper and paperboard's resistance to penetration and diffusion of aqueous solutions. Spray sizing is a common method for paperboard sizing and plasticization. The specific method is to transport the glue to the nozzle, turn it into fine aerosol, and spray it on the paperboard surface through air for gluing. This method is suitable for paperboard with a small amount of glue and water and oil resistance. The amount of glue and the thickness of the glue can also be controlled according to different nozzles. The cost is also lower than the drum sizing method and the coating sizing method.

[0003] The spray sizing method requires a drying and shaping process after the paperboard is sizing. The two-sided nature of the paperboard during the drying process is that when the paperboard is drying, the fibers inside begin to shrink. If the drying conditions are not properly controlled or the drying curve is unreasonable, the time for the two sides of the paperboard to reach the critical moisture point will be different, and the drying rate will also be inconsistent, which will lead to inconsistent shrinkage of the fibers on both sides of the paperboard and warping. Especially for single-sided coated paperboard, after the paperboard reaches the paper moisture, it is coated on its surface, causing the paper sheet to absorb water on one side, and then the paperboard is heated and dried on one side in an oven. Therefore, the warping of the paperboard is inevitable. Moreover, the lighter the weight of the paperboard, the more serious the warping. The warping of the paperboard will reduce the quality of the paperboard and is not conducive to the subsequent processing of the paperboard. Therefore, how to avoid the warping of the paperboard after sizing has become a problem that needs to be solved in this field. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a three-dimensional atomized glue-applied high-plasticized paperboard, which can improve the anti-warping performance of the paperboard and facilitate subsequent processing.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a three-dimensional atomized glue-applied high-plasticized paperboard, comprising an upper paperboard, corrugated paper, a lower paperboard and a glue layer; the corrugated paper is arranged between the upper paperboard and the lower paperboard; the corrugated paper comprises a plurality of wave grooves; the upper end of the upper paperboard and the lower end of the lower paperboard are both provided with a plurality of pressing grooves; the length direction of the pressing grooves is perpendicular to the length direction of the wave grooves of the corrugated paper; the glue layer is coated on the upper end surface of the upper paperboard and the lower end surface of the lower paperboard, and the pressing grooves are filled with the glue layer.

[0006] Preferably, the upper paperboard and the lower paperboard have the same structure.

[0007] Preferably, the thickness of the upper paperboard is not less than one fifth of the flute height of the corrugated paper.

[0008] Preferably, the depth of the pressing groove is not less than half of the thickness of the upper paperboard.

[0009] Preferably, it further comprises several layers of inner paper; the corrugated paper is provided with several layers; the corrugated paper and the inner paper are distributed at intervals between the upper paperboard and the lower paperboard.

[0010] Preferably, the number of the lining papers is one layer less than the number of the corrugated papers.

[0011] Preferably, the corrugated paper is bonded to both the upper paperboard and the lower paperboard.

[0012] Preferably, the corrugated paper and the lining paper are bonded.

[0013] Compared with the prior art, the utility model has the following beneficial effects: by arranging an upper paperboard, corrugated paper, lining paper and a lower paperboard, arranging pressing grooves on the upper paperboard and the lower paperboard, spraying glue on the surface of the upper paperboard and the lower paperboard and in the pressing grooves by a spray-type gluing method to form reinforcing ribs, the length direction of the reinforcing ribs is perpendicular to the length direction of the wave grooves of the corrugated paper itself, which not only improves the physical properties of the paperboard, but also greatly improves the anti-warping performance of the paperboard, which is beneficial to the subsequent processing of the paperboard. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the paperboard cross section of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the paperboard of the utility model before gluing.

[0016] In the figure: 1 upper cardboard, 2 corrugated paper, 3 inner paper, 4 lower cardboard, 5 glue layer, 11 pressing groove. DETAILED DESCRIPTION

[0017] The following describes the specific implementation of the utility model in detail in conjunction with the accompanying drawings so that those skilled in the art can more clearly understand how to practice the utility model. Although the utility model is described in conjunction with its preferred specific embodiments, these embodiments are only illustrative, rather than limiting the scope of the utility model.

[0018] Specific embodiment 1: Please refer to Figure 1-2 A three-dimensional atomized glued high-plasticized paperboard comprises: an upper paperboard 1, corrugated paper 2, a lining paper 3, a lower paperboard 4 and a glue layer 5.

[0019] The corrugated paper 2 and the inner paper 3 are arranged as interlayers between the upper paperboard 1 and the lower paperboard 4 by bonding. The glue layer 5 is sprayed on the upper surface of the upper paperboard 1 and the lower surface of the lower paperboard 4 by a spray gluing method to form a protective layer, so that the paperboard itself is plasticized to enhance the physical properties of the paperboard, such as moisture-proof and pressure-resistant properties, and finally the quality of the paperboard is effectively improved.

[0020] In this embodiment, the corrugated paper 2 has two layers, and the inner paper 3 has one layer. The inner paper 3 is arranged between the two layers of corrugated paper 2 as a supporting layer, and the upper paperboard 1 and the lower paperboard 4 are respectively bonded to the corrugated paper 2 at corresponding positions.

[0021] In one embodiment, the number of corrugated paper 2 and lining paper 3 is not limited to the above number. For example, the corrugated paper 2 and lining paper 3 can be arranged in several layers. The corrugated paper 2 and lining paper 3 are arranged at intervals and the lining paper 3 as a supporting layer is one layer less than the number of corrugated paper 2 to ensure that the outer layer of the interlayer is always corrugated paper 2.

[0022] In this embodiment, the upper paperboard 1 and the lower paperboard 4 have the same structure. The outer end surface of the upper paperboard 1, that is, the upper end surface, is provided with a plurality of pressing grooves 11, and the pressing grooves 11 are evenly distributed; when implementing, the upper paperboard 1 needs to be placed on a machine tool first, and a plurality of pressing grooves 11 are formed on the upper paperboard 1 by rolling with a roller; with the presence of the pressing grooves 11, the position of the upper paperboard 1 at the pressing grooves 11 becomes more compact and the rigidity is improved.

[0023] After the paperboard is formed, the glue is sprayed on the surface of the upper paperboard 1 and the pressed groove 11 by the above-mentioned spray-type gluing method. After the glue solidifies to form a glue layer 5, the glue in the pressed groove 11 forms a reinforcing rib on the glue layer 5 body. In other words, the pressed groove 11 on the upper paperboard 1 can play the role of a mold. After gluing, the two main end surfaces of the paperboard are provided with reinforcing ribs. Because the length direction of the pressed groove 11 is perpendicular to the rolling direction of the corrugated paper 2, that is, the length direction of the corrugated paper 2 itself, the anti-warping performance of the paperboard is greatly improved.

[0024] In order to further improve the compression resistance of the paperboard, the thickness of the upper paperboard 1 and the lower paperboard 4 should be no less than one fifth of the height of the flute of the corrugated paper 2 .

[0025] In one embodiment, under the condition that the strength of the upper paperboard 1, the corrugated paper 2, and the lower paperboard 4 meet the standards, the inner paper 3 may not be provided.

[0026] In this embodiment, in order for the reinforcing rib to function, the depth of the pressing groove 11 should be no less than half of the thickness of the upper paperboard 1 .

[0027] Through the technical solution, by arranging the upper cardboard, corrugated paper, lining paper and lower cardboard, pressing grooves are arranged on the upper cardboard and the lower cardboard, and glue is sprayed on the surface of the upper cardboard and the lower cardboard and in the pressing grooves by a spray gluing method to form reinforcing ribs, and the length direction of the reinforcing ribs is perpendicular to the length direction of the wave grooves of the corrugated paper itself, which not only improves the physical properties of the cardboard, but also greatly improves the anti-warping performance of the cardboard, which is beneficial to the subsequent processing of the cardboard.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A three-dimensional atomized glue-applied high-plasticized paperboard, characterized in that: The invention comprises an upper paperboard (1), corrugated paper (2), a lower paperboard (4) and a glue layer (5); the corrugated paper (2) is arranged between the upper paperboard (1) and the lower paperboard (4); the corrugated paper (2) comprises a plurality of corrugated grooves; the upper end of the upper paperboard (1) and the lower end of the lower paperboard (4) are both provided with a plurality of pressed grooves; the length direction of the pressed grooves is perpendicular to the length direction of the corrugated grooves of the corrugated paper (2); the glue layer (5) is coated on the upper end surface of the upper paperboard (1) and the lower end surface of the lower paperboard (4), and the pressed grooves are filled with the glue layer (5).

2. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 1, characterized in that: The upper paperboard (1) and the lower paperboard (4) have the same structure.

3. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 1 or 2, characterized in that: The thickness of the upper paperboard (1) is not less than one fifth of the height of the flutes of the corrugated paper (2).

4. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 1, characterized in that: The depth of the pressing groove is not less than half the thickness of the upper paperboard (1).

5. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 1, characterized in that: It also includes several layers of inner paper (3); the corrugated paper (2) is provided with several layers; the corrugated paper (2) and the inner paper (3) are distributed at intervals between the upper paperboard (1) and the lower paperboard (4).

6. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 5, characterized in that: The number of the inner paper (3) is one layer less than the number of the corrugated paper (2).

7. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 1, characterized in that: The corrugated paper (2) is bonded to the upper paperboard (1) and the lower paperboard (4).

8. The three-dimensional atomized glue-applied high-plasticized paperboard according to claim 5, characterized in that: The corrugated paper (2) and the lining paper (3) are bonded together.

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