Dustproof environment-friendly kraft paper

Abstract

The utility model discloses dustproof environment-friendly kraft paper, which belongs to the technical field of kraft paper, and comprises a kraft paper body, both sides of the kraft paper body are respectively provided with an edge protection structure for preventing the edge of the kraft paper body from being abraded and deckle edges, and the kraft paper body comprises a middle core layer; according to the kraft paper, the middle core layer and the surface layer form the main body part of the kraft paper, and the protective layer is arranged on the surface of the surface layer and is used for protecting the surface part of the kraft paper, so that the wear resistance of the surface of the kraft paper is improved in the transportation, storage and use processes of the kraft paper, and the problem of wool residue falling caused by friction on the surface of the kraft paper is solved; the edge protection structures are arranged on the two sides of the kraft paper, so that the problem of burrs caused by edge friction in the long-time use and transportation and storage process is solved, and the kraft paper has the advantages that the wear resistance of the kraft paper can be improved, and the situation that much dust appears in the storage and use environment due to falling of wool residues can be prevented through the arrangement of the edge protection structures.

Description

Technical Field

[0001] The utility model relates to the technical field of kraft paper, in particular to a dust-proof and environment-friendly kraft paper. Background Technique

[0002] In the prior art, kraft paper can generally be used as cement bag paper, envelope paper, adhesive-sealed paper packaging, asphalt paper, cable protection paper, insulating paper, or the cover of a book, etc.

[0003] Chinese Patent with Publication Number CN220767558U discloses a composite kraft paper, including: a flame-retardant coating is provided on the outer surface of the outer kraft paper, an oil-repellent coating is provided on the outer surface of the inner kraft paper, and reinforcing bands are provided on both sides of the outer kraft paper and the inner kraft paper; the beneficial effects are: for the composite kraft paper proposed by the utility model, the reinforcing bands provided on both sides of the outer kraft paper and the inner kraft paper can ensure that the composite kraft paper is not easily torn and damaged, the anti-slip bumps on the upper surface of the outer kraft paper can prevent the composite kraft paper with items inside from slipping off easily when held by hand, the flame-retardant coating can enhance the fire resistance of the composite kraft paper, the tensile non-woven fabric can better improve the tensile performance of the composite kraft paper, the buffer cotton can play a role in buffering and protecting the items contained inside the composite kraft paper, the waterproof inner core can enhance the waterproof performance of the composite kraft paper, and the oil-repellent coating can prevent the oil stains on the surface of the items contained inside the kraft paper from soaking into the inside of the composite kraft paper.

[0004] For the kraft paper involved in the above patent, there is no protection on the surface and the side edges, resulting in the problem that during storage, transportation and use, its surface and sides are extremely likely to have frayed edges due to friction, and the fallen residues are likely to cause a lot of fluff and dust in the storage and use environment. Therefore, we need to propose a dust-proof and environment-friendly kraft paper. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust-proof and environment-friendly kraft paper, which has the advantages of improving its wear resistance and preventing fluff from falling, resulting in more dust in the storage and use environment, so as to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides a dust-proof and environment-friendly kraft paper, including a kraft paper body, and edge protection structures are provided on both sides of the kraft paper body to prevent the edges of the kraft paper body from being worn and frayed.

[0007] The kraft paper body includes a core layer, skin layers are provided on both the upper and lower sides of the core layer, a protective layer is provided on the side of the skin layer away from the core layer, and the total thickness of the core layer, the skin layer and the protective layer is the same as the thickness of the edge protection structure.

[0008] Preferably, the epidermis layer includes first connecting interlayers adhered to the upper and lower sides of the core layer. A second connecting interlayer is adhered to the side of the protective layer close to the first connecting interlayer, and the first connecting interlayer and the second connecting interlayer are adhered together.

[0009] Preferably, strip-shaped grooves are formed on the inner sides of the first connecting interlayer and the second connecting interlayer, and the strip-shaped grooves on the surfaces of the first connecting interlayer and the second connecting interlayer are arranged in a staggered manner.

[0010] Preferably, first adhesive layers are provided between the core layer, the first connecting interlayer, the second connecting interlayer and the protective layer, and the core layer, the first connecting interlayer, the second connecting interlayer and the protective layer are adhesively fixed together through the first adhesive layers.

[0011] Preferably, the edge protection structure includes protective edge strips provided on both sides of the core layer, the first connecting interlayer and the second connecting interlayer. Ninety-degree folding angles are provided at the edges on the upper and lower sides of the protective edge strips, and the protective edge strips are clamped and fixed to the surface of the second connecting interlayer through the folding angles.

[0012] Preferably, several groups of triangular clamping blocks are equidistantly installed on one side of the inner cavity of the protective edge strip. Triangular clamping grooves adapted to the triangular clamping blocks are formed on both sides of the core layer, the first connecting interlayer and the second connecting interlayer, and the surface of the triangular clamping block is attached to the inner wall of the triangular clamping groove.

[0013] Preferably, second adhesive layers are provided between the protective edge strip and the core layer, the first connecting interlayer and the second connecting interlayer, and the protective edge strip is adhesively fixed to both sides of the core layer, the first connecting interlayer and the second connecting interlayer through the second adhesive layers.

[0014] Preferably, the thickness of the folding angle part of the protective edge strip is the same as that of the protective layer, and the protective layer is a polyethylene or polypropylene film.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] The main body part of the kraft paper is composed of the core layer and the epidermis layer in the present utility model. A protective layer is arranged on the surface of the epidermis layer to protect the surface part of the kraft paper, so as to increase the wear resistance of its surface during transportation, storage and use, and prevent the problem of falling fluff on its surface due to friction. Moreover, edge protection structures are arranged on both sides of the kraft paper, so that the problem of frayed edges will not occur due to edge friction during long-term use, transportation and storage. Through the setting of this structure, the advantages of improving the wear resistance of the kraft paper and preventing the generation of a large amount of dust in the storage and use environment due to falling fluff are achieved. Description of the Drawings

[0017] Figure 1Schematic structural diagram of the present utility model;

[0018] Figure 2 Schematic split structure diagram of the kraft paper body of the present utility model;

[0019] Figure 3 For the present utility model Figure 1 Enlarged view at position A in;

[0020] Figure 4 For the present utility model Figure 2 Enlarged view at position B in;

[0021] Figure 5 For the present utility model Figure 2 Enlarged view at position C in.

[0022] In the figure: 100, kraft paper body; 110, core layer; 120, skin layer; 121, first connecting interlayer; 122, second connecting interlayer; 123, strip-shaped groove; 130, protective layer; 200, edge protection structure; 210, protective edge strip; 220, triangular clamping block; 230, triangular clamping groove; 300, first adhesive layer; 400, second adhesive layer. Specific embodiments

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5 , the present utility model provides a dust-proof and environmentally friendly kraft paper, including a kraft paper body 100. The kraft paper body 100 includes a core layer 110. Both the upper and lower sides of the core layer 110 are provided with skin layers 120. A protective layer 130 is provided on the side of the skin layer 120 away from the core layer 110. The protective layer 130 is a polyethylene or polypropylene film.

[0025] In this embodiment, the main part of the kraft paper is composed of the core layer 110 and the skin layer 120. A protective layer 130 is provided on the surface of the skin layer 120 to protect the surface part of the kraft paper, so as to increase the wear resistance of its surface during transportation, storage and use, and prevent the problem of falling fluff on its surface due to friction.

[0026] It should be noted that the main material used for the core layer 110 of the above kraft paper body 100 is recycled pulp. To improve the utilization efficiency of resources and reduce environmental impact, many manufacturers also use recycled pulp to produce kraft paper. Recycled pulp is extracted from recycled paper products and can be reused for papermaking after appropriate treatment. Using recycled pulp can not only reduce costs but also contribute to environmental protection and reduce the cutting of trees.

[0027] Among them, the main material of the skin layer 120 is wood pulp, especially sulfate softwood pulp. The quality of the wood pulp directly affects the strength and durability of the kraft paper. Sulfate softwood pulp is particularly suitable for producing kraft paper that requires high toughness due to its long fiber and high strength characteristics. The cellulose content in the wood pulp is the key factor determining the final strength of the paper.

[0028] In addition, the skin layer 120 includes a first connecting interlayer 121 bonded to the upper and lower sides of the core layer 110. A second connecting interlayer 122 is bonded to the side of the protective layer 130 close to the first connecting interlayer 121. The first connecting interlayer 121 and the second connecting interlayer 122 are bonded together. Strip-shaped grooves 123 are provided on the inner sides of both the first connecting interlayer 121 and the second connecting interlayer 122, and the strip-shaped grooves 123 on the surfaces of the first connecting interlayer 121 and the second connecting interlayer 122 are arranged in an alternating manner.

[0029] In this embodiment, the skin layer 120 is composed of the first connecting interlayer 121 and the second connecting interlayer 122. A number of groups of strip-shaped grooves 123 are alternately arranged on the inner sides of both the first connecting interlayer 121 and the second connecting interlayer 122. After bonding, the first connecting interlayer 121 and the second connecting interlayer 122 can be tightly bonded together through the strip-shaped grooves 123. By providing the strip-shaped grooves 123, the contact area between the first connecting interlayer 121 and the second connecting interlayer 122 can be increased, thereby improving the bonding effect.

[0030] Preferably, a first adhesive layer 300 is provided between the core layer 110, the first connecting interlayer 121, the second connecting interlayer 122, and the protective layer 130. The core layer 110, the first connecting interlayer 121, the second connecting interlayer 122, and the protective layer 130 are bonded and fixed together through the first adhesive layer 300.

[0031] Further, edge protection structures 200 for preventing wear and fraying at the edges of the kraft paper body 100 are provided on both sides of the kraft paper body 100. The total thickness of the core layer 110, the skin layer 120, and the protective layer 130 is the same as the thickness of the edge protection structure 200. The edge protection structure 200 includes protective edge strips 210 provided on both sides of the core layer 110, the first connection interlayer 121, and the second connection interlayer 122. At the edges on the upper and lower sides of the protective edge strips 210, there are ninety-degree folding corners. The protective edge strips 210 are clamped and fixed to the surface of the second connection interlayer 122 through the folding corners, and the thickness of the folded corner portion of the protective edge strips 210 is the same as the thickness of the protective layer 130.

[0032] Through the setting of the edge protection structure 200, the two sides of the kraft paper body 100 can be protected. Edge protection structures 200 are provided on both sides of the kraft paper, so that there will be no problem of fraying due to edge friction during long-term use, transportation, and storage. In this embodiment, ninety-degree folding corners are provided at the edges on the upper and lower sides of the protective edge strips 210. The two sets of folding corners are respectively clamped on the surfaces of the upper and lower skin layers 120, so that the core layer 110 and the skin layer 120 can be tightly bonded together, preventing the problem of warping of the core layer 110 and the skin layer 120 caused by friction at the edges of the kraft paper body 100. And in this embodiment, the thickness of the bent portion of the protective edge strips 210 is the same as the thickness of the protective layer 130, and there will be no problem of unevenness on the surface of the kraft paper body 100 due to the existence of the bent portion.

[0033] Furthermore, several groups of triangular clamping blocks 220 are equidistantly installed on one side of the inner cavity of the protective edge strips 210. Triangular clamping grooves 230 adapted to the triangular clamping blocks 220 are provided on both sides of the core layer 110, the first connection interlayer 121, and the second connection interlayer 122. The surface of the triangular clamping blocks 220 fits with the inner wall of the triangular clamping grooves 230. A second adhesive layer 400 is provided between the protective edge strips 210 and the core layer 110, the first connection interlayer 121, and the second connection interlayer 122. The protective edge strips 210 are adhesively fixed to both sides of the core layer 110, the first connection interlayer 121, and the second connection interlayer 122 through the second adhesive layer 400.

[0034] In this embodiment, a second adhesive layer 400 is provided between the protective edge strip 210 and the kraft paper body 100 for adhesively fixing the protective edge strip 210 on both sides of the kraft paper body 100. In particular, triangular locking blocks 220 are provided in the inner cavity of the protective edge strip 210, and triangular grooves 230 adapted to the triangular locking blocks 220 are formed on both sides of the core layer 110, the first connecting interlayer 121, and the second connecting interlayer 122. The cooperation of the triangular locking blocks 220 and the triangular grooves 230 can increase the contact area between the protective edge strip 210 and the kraft paper body 100, thereby improving the adhesion effect between the protective edge strip 210 and the kraft paper body 100.

[0035] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof and environmentally friendly kraft paper, characterized in that: include: Kraft paper body (100); Both sides of the kraft paper body (100) are provided with edge protection structures (200) for preventing the edges of the kraft paper body (100) from being worn and burred; The kraft paper body (100) comprises a core layer (110), and skin layers (120) are arranged on the upper and lower sides of the core layer (110). A protective layer (130) is arranged on the side of the skin layer (120) away from the core layer (110), and the total thickness of the core layer (110), the skin layer (120) and the protective layer (130) is the same as the thickness of the edge protection structure (200).

2. The dustproof and environmentally friendly kraft paper according to claim 1, characterized in that: The skin layer (120) comprises a first connecting interlayer (121) bonded to the upper and lower sides of the core layer (110); a second connecting interlayer (122) is bonded to one side of the protective layer (130) close to the first connecting interlayer (121); and the first connecting interlayer (121) and the second connecting interlayer (122) are bonded together.

3. The dustproof and environmentally friendly kraft paper according to claim 2, characterized in that: The inner sides of the first connecting interlayer (121) and the second connecting interlayer (122) are both provided with strip-shaped grooves (123), and the strip-shaped grooves (123) on the surfaces of the first connecting interlayer (121) and the second connecting interlayer (122) are arranged in a staggered manner.

4. The dustproof and environmentally friendly kraft paper according to claim 3, characterized in that: A first adhesive layer (300) is provided between the core layer (110), the first connecting interlayer (121), the second connecting interlayer (122) and the protective layer (130); the core layer (110), the first connecting interlayer (121), the second connecting interlayer (122) and the protective layer (130) are bonded and fixed together by the first adhesive layer (300).

5. The dustproof and environmentally friendly kraft paper according to claim 2, characterized in that: The edge protection structure (200) comprises protection edge strips (210) arranged on both sides of the core layer (110), the first connecting interlayer (121) and the second connecting interlayer (122); the protection edge strips (210) are provided with 90-degree folding angles at the edges on the upper and lower sides; the protection edge strips (210) are fixed to the surface of the second connecting interlayer (122) by clamping the folding angles.

6. The dustproof and environmentally friendly kraft paper according to claim 5, characterized in that: A plurality of groups of triangular clamping blocks (220) are equidistantly installed on one side of the inner cavity of the protective edge strip (210), and triangular clamping grooves (230) adapted to the triangular clamping blocks (220) are provided on both sides of the core layer (110), the first connecting interlayer (121) and the second connecting interlayer (122), and the surfaces of the triangular clamping blocks (220) are in contact with the inner walls of the triangular clamping grooves (230).

7. The dustproof and environmentally friendly kraft paper according to claim 5, characterized in that: A second adhesive layer (400) is provided between the protective edge strip (210) and the core layer (110), the first connecting interlayer (121) and the second connecting interlayer (122); the protective edge strip (210) is bonded and fixed to both sides of the core layer (110), the first connecting interlayer (121) and the second connecting interlayer (122) through the second adhesive layer (400).

8. The dustproof and environmentally friendly kraft paper according to claim 5, characterized in that: The corner portion of the protective edge strip (210) has the same thickness as the protective layer (130), and the protective layer (130) is a polyethylene or polypropylene film.

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