High-bursting-strength regenerated craft paper

Abstract

The utility model relates to the technical field of papermaking, and discloses a high-bursting-strength regenerated craft paper which comprises a surface layer, a tearing-resistant assembly is arranged at the bottom of the surface layer, a core layer is fixedly connected to the bottom of the tearing-resistant assembly, a plurality of longitudinal supporting strips are fixedly connected to the bottom of the core layer, and the longitudinal supporting strips are fixedly connected to the bottom of the surface layer. The tearing-resistant assembly comprises a plurality of longitudinal supporting strips, a plurality of transverse wave strips are fixedly connected to the bottoms of the longitudinal supporting strips, a bottom layer is fixedly connected to the bottoms of the transverse wave strips, an outer sealing layer is fixedly connected to the outer portion of the surface layer, the tearing-resistant assembly comprises a plurality of longitudinal wave strips, and a plurality of transverse supporting strips are fixedly connected to the bottoms of the longitudinal wave strips. The bottoms of the transverse supporting strips are fixedly connected to the top of the core layer. According to the regenerated craft paper, the paper texture is lighter, meanwhile, it can be guaranteed that the paper is not prone to being damaged and is more stable, the tearing resistance is improved, and then the service life of the regenerated craft paper can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of papermaking, in particular to a recycled kraft paper with high bursting resistance. Background Art

[0002] Papermaking is divided into two forms: mechanical and manual. The mechanical process is carried out continuously on a papermaking machine. The pulp suitable for the quality of paper is diluted with water to a certain concentration, and initially dehydrated on the wire section of the papermaking machine to form wet paper sheets, which are then pressed for dehydration and then dried into paper.

[0003] After searching, the Chinese patent document announcement number is: CN203546512U. The utility model discloses a recycled kraft paper with low gram weight, high ring pressure and high burst resistance, including a sizing layer, a surface layer, a core layer and a bottom layer, characterized in that the surface layer, the core layer and the bottom layer are compounded in sequence; the surface layer is a long fiber forming layer, the core layer is a short fiber forming layer, the bottom layer is a long fiber and short fiber mixed forming layer, and the sizing layer is arranged on the surface layer. The recycled kraft paper with low gram weight, high ring pressure and high burst resistance has low gram weight, high ring pressure and high burst resistance.

[0004] Although the above patent mentioned in the specification that "the recycled kraft paper with low grammage, high ring pressure and high burst resistance has low grammage, high ring pressure and high burst resistance", some existing recycled kraft paper not only consumes more raw materials in the preparation process, but also only uses different paper layers after the pulp is mixed to form the paper. At the same time, the paper has insufficient tear resistance after forming, and its stability is not strong and it is easy to be damaged. Therefore, in view of the above shortcomings, a recycled kraft paper with high burst resistance is proposed. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a recycled kraft paper with high burst resistance, aiming to improve the problem that some recycled kraft paper in the prior art has weak stability and insufficient tear resistance, resulting in easy damage.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A recycled kraft paper with high burst resistance comprises a surface layer, a tear-resistant component is arranged at the bottom of the surface layer, a core layer is fixedly connected to the bottom of the tear-resistant component, a plurality of longitudinal support bars are fixedly connected to the bottom of the core layer, a plurality of transverse corrugated bars are fixedly connected to the bottom of the plurality of longitudinal support bars, a bottom layer is fixedly connected to the bottom of the plurality of transverse corrugated bars, and an outer sealing layer is fixedly connected to the outside of the surface layer.

[0008] Furthermore, the tear-resistant component includes a plurality of longitudinal corrugated strips, and a plurality of transverse supporting strips are fixedly connected to the bottom of the plurality of longitudinal corrugated strips.

[0009] Furthermore, the bottoms of the plurality of transverse support strips are fixedly connected to the top of the core layer, and the front and rear sides of the longitudinal corrugated strips are fixedly connected to the inside of the outer sealing layer.

[0010] Furthermore, both left and right sides of the transverse support strip are fixedly connected to the inside of the outer sealing layer, and the outside of the core layer is fixedly connected to the inside of the outer sealing layer.

[0011] Furthermore, both front and rear sides of the longitudinal support strip are fixedly connected to the inside of the outer sealing layer, and both left and right sides of the transverse corrugated strip are fixedly connected to the inside of the outer sealing layer.

[0012] Furthermore, the outside of the bottom layer is fixedly connected to the inside of the outer cover layer, and the material of the surface layer is kraft paper.

[0013] Furthermore, the material of the longitudinal corrugated strips and the transverse corrugated strips is corrugated cardboard, and the material of the transverse support strips and the longitudinal support strips is imported US waste 11#.

[0014] Furthermore, the core layer is made of recycled pulp, and the bottom layer is made of bleached kraft pulp.

[0015] The utility model has the following beneficial effects:

[0016] 1. In the utility model, through the coordinated use of the surface layer, longitudinal corrugated strips, transverse supporting strips, core layer, longitudinal supporting strips, transverse corrugated strips, bottom layer and other structures, the recycled kraft paperboard can not only be lighter in texture, but also be less prone to damage, more stable, and have improved tear resistance, thereby greatly extending its service life.

[0017] 2. In the present invention, through the coordinated use of structures such as the surface layer, the core layer, the longitudinal support strips, the transverse corrugated strips, the bottom layer, and the outer cover layer, not only can the paper be reused, but also less raw materials can be used to prepare the paper, thereby saving resources and realizing recycling. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A three-dimensional diagram of a recycled kraft paper with high bursting strength proposed by the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the outer cover layer of a recycled kraft paper with high burst resistance proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the core layer structure of a recycled kraft paper with high burst resistance proposed by the utility model;

[0021] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0022] Legend:

[0023] 1. Surface layer; 2. Longitudinal corrugated strips; 3. Transverse supporting strips; 4. Core layer; 5. Longitudinal supporting strips; 6. Transverse corrugated strips; 7. Bottom layer; 8. Outer sealing layer. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1 - Figure 3 The utility model provides an embodiment: a recycled kraft paper with high burst resistance, including a surface layer 1, the surface layer 1 is made of kraft paper, and the surface layer 1 is the outermost layer, which is made of kraft paper. This material has good wear resistance and tear resistance, and can protect the internal structure from external physical damage. The bottom of the surface layer 1 is provided with a tear-resistant component, and the tear-resistant component includes a plurality of longitudinal corrugated strips 2. The corrugated strips increase the strength of the paper, making it more resistant to tearing when pulled by external force. The bottom of the plurality of longitudinal corrugated strips 2 is fixedly connected with a plurality of transverse support strips 3, and the longitudinal corrugated strips 2 and the transverse support strips 3 form a grid-like structure, which provides additional support and enhances the compressive resistance and stability of the entire structure. The bottom of the tear-resistant component is fixedly connected with a core layer 4, and the material of the core layer 4 is recycled pulp material. The core layer 4 is made of recycled pulp material. This ring Preserving materials not only reduces costs, but also facilitates the reuse of resources. The bottoms of the multiple transverse support bars 3 are fixedly connected to the top of the core layer 4. The bottom of the transverse support bar 3 is tightly connected to the core layer 4, ensuring the stability of the core layer 4 and providing a solid foundation for the tear-resistant assembly. The bottom of the core layer 4 is fixedly connected with multiple longitudinal support bars 5. The longitudinal support bars 5 further strengthen the supporting force of the core layer 4 and improve the overall bearing capacity. The transverse support bars 3 and the longitudinal support bars 5 are made of imported US waste 11#. The imported US waste 11# material is to improve the quality and durability of the support bars. The bottoms of the multiple longitudinal support bars 5 are fixedly connected with multiple transverse corrugated bars 6. The longitudinal corrugated bars 2 and the transverse corrugated bars 6 are made of corrugated cardboard material. The transverse corrugated bars 6 are also made of corrugated cardboard material, which enhances the toughness and impact resistance of the paper.

[0026] Reference Figure 2- Figure 4 The bottom of the plurality of transverse corrugated strips 6 is fixedly connected with a bottom layer 7, the material of the bottom layer 7 is bleached kraft pulp material, and the bleached kraft pulp material used in the bottom layer 7 has good smoothness and printability. The outside of the surface layer 1 is fixedly connected with an outer sealing layer 8, and the outer sealing layer 8 seals the internal multi-layer structure to protect the internal layers from environmental influences and provide good appearance texture. The front and rear sides of the longitudinal corrugated strips 2 are fixedly connected to the inside of the outer sealing layer 8, the left and right sides of the transverse support strips 3 are fixedly connected to the inside of the outer sealing layer 8, the outside of the core layer 4 is fixedly connected to the inside of the outer sealing layer 8, the front and rear sides of the longitudinal support strips 5 are fixedly connected to the inside of the outer sealing layer 8, the left and right sides of the transverse corrugated strips 6 are fixedly connected to the inside of the outer sealing layer 8, and the outside of the bottom layer 7 is fixedly connected to the inside of the outer sealing layer 8. The longitudinal corrugated strips 2, the transverse support strips 3, the core layer 4, the longitudinal support strips 5, the transverse corrugated strips 6 and the two sides or the outside of the bottom layer 7 are fixedly connected to the outer sealing layer 8, ensuring the integrity and consistency of the entire paper structure.

[0027] Working principle: First, the surface layer 1 is designed to use kraft paper, which uses its natural high strength and wear resistance as a protective film to resist external physical damage. The tear-resistant component at the bottom is composed of multiple longitudinal corrugated strips 2. The wave shape can disperse the force when torn and increase the tear resistance. Secondly, the combination of the longitudinal corrugated strips 2 and the transverse support strips 3 forms a grid structure, which provides additional support and enhances the overall rigidity and compressive resistance of the paper. The core layer 4 uses recycled pulp material, which is not only environmentally friendly but also reduces costs. At the same time, it plays a buffering role in the structure, absorbing and dispersing pressure. The transverse support strips 3 and the longitudinal support strips 5 use high-quality imported US waste 11# material to ensure the durability and effective bearing capacity of the supporting structure. The bottom layer 7 uses bleached kraft pulp material, which provides a smooth base for the entire structure and increases the flatness and printability of the entire paper. The outer cover 8 encapsulates the entire multi-layer structure, which protects the internal layers from environmental influences on the one hand and provides an aesthetically pleasing appearance on the other.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A recycled kraft paper with high bursting strength, comprising a surface layer (1), characterized in that: The bottom of the surface layer (1) is provided with a tear-resistant component, the bottom of the tear-resistant component is fixedly connected to a core layer (4), the bottom of the core layer (4) is fixedly connected to a plurality of longitudinal support strips (5), the bottoms of the plurality of longitudinal support strips (5) are fixedly connected to a plurality of transverse corrugated strips (6), the bottoms of the plurality of transverse corrugated strips (6) are fixedly connected to a bottom layer (7), and the outside of the surface layer (1) is fixedly connected to an outer sealing layer (8).

2. The recycled kraft paper with high bursting strength according to claim 1, characterized in that: The tear-resistant assembly comprises a plurality of longitudinal wave strips (2), and a plurality of transverse support strips (3) are fixedly connected to the bottoms of the plurality of longitudinal wave strips (2).

3. The recycled kraft paper with high bursting strength according to claim 2, characterized in that: The bottoms of the plurality of transverse support strips (3) are fixedly connected to the top of the core layer (4), and the front and rear sides of the longitudinal corrugated strips (2) are fixedly connected to the inside of the outer sealing layer (8).

4. The recycled kraft paper with high bursting strength according to claim 2, characterized in that: The left and right sides of the transverse support strip (3) are both fixedly connected to the inside of the outer sealing layer (8), and the outside of the core layer (4) is fixedly connected to the inside of the outer sealing layer (8).

5. The recycled kraft paper with high bursting strength according to claim 1, characterized in that: The front and rear sides of the longitudinal support strip (5) are both fixedly connected to the inside of the outer sealing layer (8), and the left and right sides of the transverse corrugated strip (6) are both fixedly connected to the inside of the outer sealing layer (8).

6. The recycled kraft paper with high bursting strength according to claim 1, characterized in that: The outside of the bottom layer (7) is fixedly connected to the inside of the outer sealing layer (8), and the material of the surface layer (1) is kraft paper.

7. The recycled kraft paper with high bursting strength according to claim 2, characterized in that: The material of the longitudinal corrugated strip (2) and the transverse corrugated strip (6) is corrugated cardboard, and the material of the transverse support strip (3) and the longitudinal support strip (5) is imported US waste 11#.

8. The recycled kraft paper with high bursting strength according to claim 1, characterized in that: The material of the core layer (4) is recycled paper pulp, and the material of the bottom layer (7) is bleached kraft paper pulp.

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