Combined type paper lunch box with separation cavity grids and production process of combined type paper lunch box

Abstract

The invention discloses a combined type paper lunch box with partition cavities and a production process thereof, and belongs to the field of lunch boxes, the combined type paper lunch box comprises a paper outer box body and a paper inner box body arranged on the inner upper portion of the paper outer box body, the paper outer box body is composed of a paper layer I, a food-grade waterproof layer I and an adhesive layer I from bottom to top, the paper inner box body is sequentially composed of a second paper layer, a second food-grade waterproof layer and a second adhesive layer from top to bottom, and a plurality of middle isolation belts dividing the paper inner box body into a plurality of cavities are arranged in the middle of the paper inner box body. Two groups of pure paper materials are pressed into the food lunch box with the separation cavity, and then the food lunch box can be used after being combined and assembled, so that the problem that the separation cavity cannot be processed when the existing pure paper lunch box is processed is solved, and meanwhile, the problems that when the existing paper lunch box needs to be subjected to cavity making, paper pulp needs to be integrally poured and formed, and the production cost is low are solved. And due to addition of glue or other additive substances, the problem of unhealthy and environment-friendly effects is solved.

Description

Technical Field

[0001] The invention relates to the field of lunch boxes, in particular to a combined paper lunch box with separated cavities and a production process thereof. Background Art

[0002] With the accelerated pace of life, especially boxed fast food is very popular among people, and its sales market is all over the world. However, the white pollution formed by discarded plastic fast food boxes has seriously damaged the ecological environment and constituted a public nuisance. Although paper lunch boxes can be recycled and avoid pollution, traditional paper lunch boxes have to make a cavity and are cast in one piece with paper pulp. Due to the addition of glue or other additives, they are not healthy and environmentally friendly.

[0003] Therefore, those skilled in the art provide a combined paper lunch box with partitioned cavities and a production process thereof to solve the problems raised in the above background technology. Summary of the invention

[0004] The object of the present invention is to provide a combined paper lunch box with partitioned cavities and a production process thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A combined paper lunch box with separated cavities comprises a paper outer box body and a paper inner box body arranged above the paper outer box body, wherein the paper outer box body consists of a paper layer 1, a food-grade waterproof layer 1 and a viscose layer 1 from bottom to top, and the paper inner box body consists of a paper layer 2, a food-grade waterproof layer 2 and a viscose layer 2 in sequence from top to bottom, and the middle of the paper inner box body has a plurality of intermediate isolation belts for dividing the paper inner box body into a plurality of cavities, and the paper outer box body is bonded to the paper inner box body by a viscose layer 1 and a viscose layer 2.

[0007] As a further solution of the present invention: the first adhesive layer and the second adhesive layer are made of food-grade hot-sealing adhesive or cold-sealing adhesive.

[0008] As a further solution of the present invention: the outer wall of the paper outer box body is integrally formed with vertical raised ribs for improving strength, and the top edge of the paper outer box body is integrally formed with an outer edge.

[0009] As a further solution of the present invention: the first paper layer and the second paper layer are both made of pure paper and plastic-free material.

[0010] As a further solution of the present invention: the paper outer box body and the paper inner box body are formed by pressing with a mold.

[0011] A production process of a combined paper lunch box with partitioned cavities comprises the following steps:

[0012] Step 1), preparation of a paper outer box body and a paper inner box body: pressing the paper outer box body into shape by a paper outer box body mold, and pressing the paper inner box body into shape by a paper inner box body mold;

[0013] Step 2) Apply waterproof layer: Apply food-grade waterproof layer on the bottom of the paper inner box and the top of the paper outer box, and let it air dry;

[0014] Step 3), apply the adhesive layer, apply food-grade cold-seal glue or hot-seal glue on the food-grade waterproof layer, and set it aside after drying;

[0015] Step 4), pressing and assembling: placing the paper inner box body prepared in step 3) on top of the paper outer box body, and then placing it on a pressing mold for pressing and combining to complete the production.

[0016] Preferably, the waterproof layer and the adhesive layer in step 2) and step 3) are applied by automated coating equipment, the thickness of the waterproof layer is 0.2-0.5 mm, when cold sealing adhesive is used, the thickness of the adhesive layer is 0.2-0.3 mm, and when hot sealing adhesive is used, the thickness of the adhesive layer is 0.1-0.2 mm.

[0017] Preferably, in step 4), when heat sealing adhesive is used, the mold is heated to 120-150° C., and when cold sealing adhesive is used, the mold can be kept at room temperature.

[0018] The present invention uses two groups of pure paper materials to press into a food lunch box with a cavity, and then the food lunch box can be used after being assembled. This solves the problem that the existing pure paper lunch box cannot be processed with a cavity during processing. It also solves the problem that the existing paper lunch box needs to be cast and formed in one piece with paper pulp when making a cavity, which is unhealthy and environmentally friendly due to the addition of glue or other additives. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a partial cross-sectional view of the present invention;

[0021] Figure 3 An exploded view of the present invention;

[0022] Figure 4 It is a process flow chart of the present invention.

[0023] In the figure: 1. Paper outer box body; 101. Paper layer one; 102. Food-grade waterproof layer one; 103. Adhesive layer one; 2. Paper inner box body; 201. Paper layer two; 202. Food-grade waterproof layer two; 203. Adhesive layer two; 3. Vertical raised ribs; 4. Outer edge; 5. Middle isolation zone. DETAILED DESCRIPTION

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

[0025] See also Figures 1 to 4 In an embodiment of the present invention, a combined paper lunch box with separated cavities and a production process thereof include a paper outer box body 1 and a paper inner box body 2 arranged above the paper outer box body 1, wherein the paper outer box body 1 is composed of a paper layer 101, a food-grade waterproof layer 102 and an adhesive layer 103 from bottom to top, and the paper inner box body 2 is composed of a paper layer 201, a food-grade waterproof layer 202 and an adhesive layer 203 from top to bottom, and the middle of the paper inner box body 2 has a plurality of intermediate isolation belts 5 that divide the paper inner box body 2 into a plurality of cavities, and the paper outer box body 1 and the paper inner box body 2 are bonded by the adhesive layer 103 and the adhesive layer 203.

[0026] By adopting the above technical scheme, two groups of pure paper materials are pressed into a food lunch box with a cavity, and then the food lunch box can be used after being assembled. This solves the problem that the existing pure paper lunch box cannot be processed with a cavity during processing. At the same time, it also solves the problem that when making a cavity in the existing paper lunch box, paper pulp needs to be cast into one piece, which is unhealthy and environmentally friendly due to the addition of glue or other additives.

[0027] The first adhesive layer 103 and the second adhesive layer 203 are made of food-grade hot-sealing adhesive or cold-sealing adhesive, so as to facilitate the rapid assembly and connection of the paper outer box body 1 and the paper inner box body 2 .

[0028] A vertical raised rib 3 for improving strength is integrally formed on the outer wall of the paper outer box body 1 , and an outer edge 4 is integrally formed on the top edge of the paper outer box body 1 .

[0029] Among them, the paper layer 101 and the paper layer 201 are both made of pure paper and plastic-free material, ensuring that the lunch box is more environmentally friendly.

[0030] The paper outer box body 1 and the paper inner box body 2 are formed by pressing with a mold, which can improve efficiency.

[0031] A production process of a combined paper lunch box with partitioned cavities comprises the following steps:

[0032] Step 1, preparation of the paper outer box body 1 and the paper inner box body 2: pressing the paper outer box body 1 into shape by means of a paper outer box body 1 mold, and pressing the paper inner box body 2 into shape by means of a paper inner box body 2 mold;

[0033] Step 2: Apply a waterproof layer: Apply a food-grade waterproof layer on the bottom of the paper inner box 2 and the top of the paper outer box 1, and let it stand and air dry;

[0034] Step 3: Apply the adhesive layer, apply food-grade cold-seal glue or hot-seal glue on the food-grade waterproof layer, and set it aside after drying;

[0035] Step 4, pressing and assembling: placing the paper inner box body 2 prepared in step 3 on top of the paper outer box body 1, and then placing it on a pressing mold for pressing and combining to complete the production.

[0036] By adopting the above technical solution and processing by using mold pressing and mold pressing combination, the processing efficiency of the lunch box can be greatly improved.

[0037] In this embodiment, the waterproof layer and the adhesive layer in step 2 and step 3 are applied by automated coating equipment, the thickness of the waterproof layer is 0.2-0.5 mm, when cold sealing adhesive is used, the thickness of the adhesive layer is 0.2-0.3 mm, and when hot sealing adhesive is used, the thickness of the adhesive layer is 0.1-0.2 mm.

[0038] In this embodiment, when hot sealing adhesive is used in step 4, the mold is heated to 120-150° C., and when cold sealing adhesive is used, the mold can be kept at room temperature.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A combined paper lunch box with partitioned cavities, comprising a paper outer box body (1) and a paper inner box body (2) arranged above the paper outer box body (1), characterized in that: The paper outer box body (1) is composed of a paper layer 1 (101), a food-grade waterproof layer 1 (102) and an adhesive layer 1 (103) from bottom to top; the paper inner box body (2) is composed of a paper layer 2 (201), a food-grade waterproof layer 2 (202) and an adhesive layer 2 (203) from top to bottom; the middle of the paper inner box body (2) is provided with a plurality of intermediate isolation zones (5) for dividing the paper inner box body (2) into a plurality of cavities; the paper outer box body (1) and the paper inner box body (2) are bonded together by an adhesive layer 1 (103) and an adhesive layer 2 (203).

2. A combined paper lunch box with partitioned cavities according to claim 1, characterized in that: The adhesive layer 1 (103) and the adhesive layer 2 (203) are made of food-grade hot-sealing adhesive or cold-sealing adhesive.

3. The combined paper lunch box with partitioned cavities according to claim 1, characterized in that: The outer wall of the paper outer box body (1) is integrally formed with vertical raised ribs (3) for improving strength, and the top edge of the paper outer box body (1) is integrally formed with an outer edge ridge (4).

4. The combined paper lunch box with partitioned cavities according to claim 1, characterized in that: The paper layer 1 (101) and the paper layer 2 (201) are both made of pure paper and plastic-free material.

5. The combined paper lunch box with partitioned cavities according to claim 1, characterized in that: The paper outer box body (1) and the paper inner box body (2) are formed by pressing with a mold.

6. A production process for a combined paper lunch box with a partition cavity, applied to a combined paper lunch box with a partition cavity according to any one of claims 1 to 5, characterized in that: The steps include: Step 1), preparation of the paper outer box body (1) and the paper inner box body (2): pressing the paper outer box body (1) into shape by means of a paper outer box body (1) mold, and pressing the paper inner box body (2) into shape by means of a paper inner box body (2) mold; Step 2), applying a waterproof layer: applying a food-grade waterproof layer on the bottom of the paper inner box body (2) and the top of the paper outer box body (1), and letting it stand to air dry; Step 3), apply the adhesive layer, apply food-grade cold-seal glue or hot-seal glue on the food-grade waterproof layer, and set it aside after drying; Step 4), pressing and assembling: placing the paper inner box body (2) prepared in step 3) on top of the paper outer box body (1), and then placing it on a pressing mold for pressing and combining to complete the production.

7. The production process of a combined paper lunch box with partitioned cavities according to claim 6, characterized in that: The waterproof layer and the adhesive layer in step 2) and step 3) are applied by automated coating equipment, the thickness of the waterproof layer is 0.2-0.5 mm, when cold sealing adhesive is used, the thickness of the adhesive layer is 0.2-0.3 mm, and when hot sealing adhesive is used, the thickness of the adhesive layer is 0.1-0.2 mm.

8. The production process of a combined paper lunch box with partitioned cavities according to claim 6, characterized in that: In the step 4), when heat sealing adhesive is used, the mold is heated to 120-150° C., and when cold sealing adhesive is used, the mold can be kept at room temperature.

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