Anti-permeation coated paper

By introducing a cross structure and multi-layer composite materials, especially polypropylene film and corrugated support layers, into the coated paper, the problem of poor support of the coated paper is solved, enabling the production of lunch boxes with high support and heat insulation, and simplifying the manufacturing process.

CN223893151UActive Publication Date: 2026-02-10ZHEJIANG JIU SUI ENVIRONMENTAL PROTECTION TECH CO LTD
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Patent Information

Application Number
CN202520330883.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-27
Publication Date
2026-02-10
Estimated Expiration
2035-02-27

AI Technical Summary

Technical Problem

Existing coated paper has poor support and needs to be laminated with cardboard to make lunch boxes, and the manufacturing process is complicated.

Method used

The anti-permeability coated paper with a cross structure includes an inner waterproof layer, a coating layer, a support layer, a reinforcement layer, a thermal insulation layer, and an outer waterproof layer. The waterproofness and support strength are improved by using polypropylene film and corrugated structure, and a foamed polypropylene thermal insulation layer is set between the layers. The paper is folded and formed quickly using connecting strips and adhesive strips.

Benefits of technology

The coating paper has improved its support and water resistance, enhanced the heat preservation performance of the lunch box, and simplified the manufacturing process, allowing the coated paper to be quickly folded into a lunch box.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of coated paper, in particular relates to anti-permeation coated paper, and aims to solve the problems that the existing coated paper is poor in supporting performance, has no stable strength when being used for manufacturing a lunch box, so that the practicability of the coated paper is poor, and the coated paper needs to be cut when being used for manufacturing the lunch box, so that the operation is troublesome. According to the technical scheme, the laminated paper comprises a laminated paper body, the laminated paper body is of a cross-shaped structure, the laminated paper body comprises an inner waterproof layer, a laminated layer, a supporting layer, a reinforcing layer, a heat preservation layer and an outer waterproof layer, the laminated paper body has good supporting stability, the laminated paper body is of the cross-shaped structure when being manufactured into a finished product, and the laminated paper body is not prone to falling off. The manufactured coated paper body can be folded conveniently and quickly, so that the coated paper body can be folded into a lunch box, and the coated paper body has good use stability in actual use.
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Description

TECHNICAL FIELD

[0001] The utility model relates to a technology field of laminated paper, especially to a kind of anti-permeation laminated paper. BACKGROUND

[0002] Laminated paper is the composite material that plastic particles are coated on the surface of paper by flow casting machine, and its main feature is that this composite material can prevent oil, water (relatively), and can be heat sealed. Different uses take different characteristics: when used for packaging hamburg, take its oil-proof property. When used for copper plate paper packaging, take its water-proof property. When used for automatic packaging machine packaging, take its heat-sealable property. Nowadays, laminated paper is made into double-layer structure by laminated paper, laminated material is coated on both sides of original paper, and double-layer laminated paper is manufactured, so that both sides can absorb oil stains or water, greatly improving the oil stain absorption or water-proof capacity of previous laminated paper.

[0003] But the supporting property of current laminated paper is poor, when making disposable lunch box, laminated paper and hardboard need to be compounded to make lunch box, so that the practicality of laminated paper is poor, and when making lunch box by using laminated paper, laminated paper needs to be slitting, so that it is more troublesome when making lunch box by using laminated paper, so we propose a kind of anti-permeation laminated paper to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings that the supporting property of current laminated paper is poor in prior art, when making disposable lunch box, laminated paper and hardboard need to be compounded to make lunch box, so that the practicality of laminated paper is poor, and when making lunch box by using laminated paper, laminated paper needs to be slitting, so that it is more troublesome when making lunch box by using laminated paper, and proposes a kind of anti-permeation laminated paper.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A kind of anti-permeation laminated paper, including laminated paper body, laminated paper body is cross structure, the laminated paper body includes inner waterproof layer, laminated layer, support layer, reinforcing layer, heat preservation layer and outer waterproof layer;

[0007] Laminated layer is fixedly installed at the bottom of inner waterproof layer, support layer is fixedly installed at the bottom of laminated layer, reinforcing layer is fixedly installed at the bottom of support layer, heat preservation layer is fixedly installed at the bottom of reinforcing layer, and outer waterproof layer is fixedly installed at the bottom of heat preservation layer and is fixedly connected.

[0008] In a possible design, the inner waterproof layer and the outer waterproof layer are both polypropylene films, for improving the waterproofness of the laminated paper body.

[0009] In a possible design, the support layer is a corrugated structure, and the reinforcing layer is a mesh surface structure; the support layer and the reinforcing layer are connected to improve the support strength of the laminated paper body.

[0010] In a possible design, the heat preservation layer is a foamed polypropylene layer, which is used to improve the heat preservation performance of the laminated paper body.

[0011] In a possible design, four connecting strips are symmetrically connected to the laminated paper body, and four adhesive strips are symmetrically connected to the laminated paper body, and the adhesive strips are movably connected to the corresponding connecting strips.

[0012] In a possible design, four grooves are equidistantly arranged on the laminated paper body, which are used to facilitate the folding of the laminated paper body.

[0013] In a possible design, an edge strip is fixedly installed on each side of the laminated paper body, and a positioning strip is fixedly embedded in the edge strip.

[0014] In a possible design, the laminated paper body is also used to manufacture a box cover, the box cover is symmetrically provided with two first side edge strips and two second side edge strips, the first side edge strips are symmetrically provided with two adhesive portions, the second side edge strips are fixedly provided with fixing pieces on both sides, and the fixing pieces are connected to the corresponding adhesive portions.

[0015] In the laminated paper body, the inner waterproof layer, the laminated layer, the support layer, the reinforcing layer, the heat preservation layer and the outer waterproof layer are connected after being pressed, which can improve the overall strength of the laminated paper body, so that the laminated paper body has stable supportability when being used to manufacture a lunch box, the inner waterproof layer and the outer waterproof layer made of polypropylene film are pressed on both sides of the laminated paper body, which can improve the waterproof performance of the laminated paper body, so that the laminated paper body has good stability when being used, the heat preservation layer made of foamed polypropylene is arranged in the laminated paper body, which can improve the heat preservation performance of the laminated paper body, so that the lunch box manufactured by the laminated paper body can improve the heat preservation performance of the packaged lunch box, and the laminated paper body can be bent along the grooves when being folded into a lunch box, so that the adhesive strips correspond to the positions of the corresponding connecting strips, and then the laminated paper body is manufactured into a lunch box by using the adhesive strips and the connecting strips, and then the two first side edge strips and the two second side edge strips are bent, and then the adhesive portions are connected to the corresponding fixing pieces, so that the cover of the lunch box can be quickly manufactured, and the cover and the box body are stably clamped, so that the lunch box can be conveniently manufactured.

[0016] Beneficial effects: in the utility model, the supporting layer and the reinforcing layer are arranged, the supporting layer and the reinforcing layer are connected after pressing, the overall strength of the laminated paper body is improved, the laminated paper body has stable supportability when the laminated paper body is used to make a lunch box;

[0017] In the utility model, the heat preservation layer is arranged in the laminated paper body, the heat preservation layer is made of foamed polypropylene, the heat preservation characteristics of the laminated paper body are improved, and the heat preservation performance of the lunch box made of the laminated paper body is improved;

[0018] In the utility model, the connecting strip and the adhesive strip are arranged, the adhesive strip corresponds to the connecting strip after the four edges of the laminated paper body are bent, and the laminated paper body is made into a lunch box after the adhesive strip and the connecting strip are bonded;

[0019] The laminated paper body has good support stability, the laminated paper body is in a cross structure when the product is made, the laminated paper body can be folded quickly, the laminated paper body can be folded into a lunch box, and the laminated paper body has good use stability when used. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 A top view structure three-dimensional schematic view of the anti-permeation laminated paper is provided for the utility model;

[0021] Figure 2 A bottom view structure three-dimensional schematic view of the anti-permeation laminated paper is provided for the utility model;

[0022] Figure 3 A sectional view structure three-dimensional schematic view of the anti-permeation laminated paper is provided for the utility model;

[0023] Figure 4 A box body and cover body clamping structure three-dimensional schematic view of the anti-permeation laminated paper is provided for the utility model;

[0024] Figure 5 A cover body unfolding structure three-dimensional schematic view of the anti-permeation laminated paper is provided for the utility model.

[0025] In the drawing: 1, laminated paper body; 11, inner waterproof layer; 12, laminated layer; 13, supporting layer; 14, reinforcing layer; 15, heat preservation layer; 16, outer waterproof layer; 2, edge strip; 21, positioning strip; 3, connecting strip; 31, adhesive strip; 4, groove; 5, cover body; 51, first side edge strip; 52, second side edge strip; 53, adhesive part; 54, fixed sheet. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Example 1: Refer to Figures 1-3 A type of coated paper, wherein the coated paper body 1 is designed with a cross structure, which allows the coated paper body 1 to be bent into a lunchbox shape. The coated paper body 1 includes multiple layers, from top to bottom: an inner waterproof layer 11, a coated layer 12, a support layer 13, a reinforcing layer 14, a thermal insulation layer 15, and an outer waterproof layer 16. These layers are fixed together through a specific process to form a coated paper with multiple functions.

[0028] Both the inner waterproof layer 11 and the outer waterproof layer 16 are made of polypropylene film. Polypropylene film has excellent waterproof performance. By laminating polypropylene film onto both sides of the coated paper body 1, the waterproof performance of the coated paper body 1 can be significantly improved. In this way, when using the coated paper body 1, its good stability can be ensured, and it will not be damaged by moisture.

[0029] The support layer 13 is designed with a corrugated structure, which gives it excellent support performance. The reinforcing layer 14 has a mesh structure, which further strengthens the overall strength of the coated paper body 1. By pressing the support layer 13 and the reinforcing layer 14 together, the support strength of the coated paper body 1 can be significantly improved. Thus, when using the coated paper body 1 to make lunch boxes, it ensures stable support and prevents deformation.

[0030] The insulation layer 15 is made of foamed polypropylene. Foamed polypropylene has excellent heat insulation properties. By setting the insulation layer 15 made of foamed polypropylene inside the coated paper body 1, the heat insulation characteristics of the coated paper body 1 can be significantly improved. In this way, when using the coated paper body 1 to make lunch boxes, its heat insulation performance for the packaged lunch boxes can be improved, ensuring that the food maintains its temperature for a period of time.

[0031] Four connecting strips 3 and four adhesive strips 31 are symmetrically connected to the coated paper body 1. The adhesive strips 31 are pre-coated with polyacrylate adhesive. After bending the four sides of the coated paper body 1, the adhesive strips 31 can be aligned with the corresponding connecting strips 3. Then, by bonding the adhesive strips 31 to the connecting strips 3, the coated paper body 1 can be made into a lunchbox. This design makes the assembly of the coated paper body 1 simple and quick.

[0032] This application can be used in the field of coated paper technology, or in other fields applicable to this application.

[0033] Example 2: Reference Figure 1 and 3 An improvement upon Embodiment 1 is provided: an anti-permeability coated paper, applied in the field of coated paper technology, wherein four equally spaced grooves 4 are further provided on the coated paper body 1. These grooves 4 guide the corners of the coated paper body 1 during folding, ensuring that the corners of the coated paper body 1 remain straight. This results in a more aesthetically pleasing lunchbox and also contributes to improved structural stability.

[0034] Finally, edge strips 2 are fixedly installed on all four sides of the coated paper body 1. Positioning strips 21 are also fixedly embedded in the edge strips 2. The edge strips 2 can protect the edges of the coated paper body 1 and prevent the multi-layer pressing structure from detaching. The embedding of the positioning strips 21 further improves the stability of the edge strips 2, making the coated paper body 1 more reliable in use.

[0035] Example 3: Reference Figure 4 and Figure 5 Further improvements are made based on Embodiment 1: an anti-permeability coated paper, which also includes a box lid 5 made from the coated paper body 1. The box lid 5 is symmetrically provided with two first side strips 51 and two second side strips 52. Two adhesive parts 53 are symmetrically provided on the first side strips 51. The adhesive for the adhesive parts 53 is also polyacrylate adhesive. Fixing pieces 54 are fixedly installed on both sides of the second side strips 52. The fixing pieces 54 are bonded to the corresponding adhesive parts 53. By bending the two first side strips 51 and the two second side strips 52, and then bonding the adhesive parts 53 to the corresponding fixing pieces 54, the lid 5 of the lunch box can be quickly made, which provides good convenience when making the lunch box.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An anti-permeability coated paper, comprising a coated paper body (1), the coated paper body (1) having a cross structure, characterized in that, The coated paper body (1) includes an inner waterproof layer (11), a coated layer (12), a support layer (13), a reinforcing layer (14), a heat insulation layer (15), and an outer waterproof layer (16); The membrane layer (12) is fixedly installed at the bottom of the inner waterproof layer (11), the support layer (13) is fixedly installed at the bottom of the membrane layer (12), the reinforcement layer (14) is fixedly installed at the bottom of the support layer (13), the insulation layer (15) is fixedly installed at the bottom of the reinforcement layer (14), and the outer waterproof layer (16) is fixedly installed at the bottom of the insulation layer (15).

2. The anti-permeability coated paper according to claim 1, characterized in that, Both the inner waterproof layer (11) and the outer waterproof layer (16) are polypropylene films, used to improve the waterproofness of the coated paper body (1).

3. The anti-permeability coated paper according to claim 1, characterized in that, The support layer (13) is a corrugated structure and the reinforcing layer (14) is a mesh structure. After connecting the support layer (13) and the reinforcing layer (14), it is used to improve the support strength of the coated paper body (1).

4. The anti-permeation coated paper according to claim 1, characterized in that, The insulation layer (15) is a foamed polypropylene layer, which is used to improve the insulation performance of the overall coated paper body (1).

5. The anti-permeation coated paper according to claim 1, characterized in that, The coated paper body (1) is symmetrically connected with four connecting strips (3) and four adhesive strips (31) are symmetrically connected to the coated paper body (1). The adhesive strips (31) are movably bonded to the corresponding connecting strips (3).

6. The anti-permeability coated paper according to claim 5, characterized in that, The coated paper body (1) is provided with four grooves (4) at equal intervals to facilitate folding of the coated paper body (1).

7. The anti-permeability coated paper according to claim 1, characterized in that, The four sides of the coated paper body (1) are fixedly installed with edge strips (2), and positioning strips (21) are fixedly embedded in the edge strips (2).

8. The anti-permeability coated paper according to claim 1, characterized in that, It also includes a box cover (5) made of coated paper body (1). The box cover (5) has two first side strips (51) and two second side strips (52) symmetrically arranged on it. The first side strip (51) has two adhesive parts (53) symmetrically arranged on it. The second side strip (52) has a fixing piece (54) fixedly installed on both sides. The fixing piece (54) is bonded to the corresponding adhesive part (53).