Damp-proof packaging box

Abstract

The utility model relates to the technical field of packaging, in particular to a damp-proof packaging box which comprises a box body and a box cover, the box body comprises an inner box body and an outer box body, the inner box body and the outer box body are both of a structure with the upper end open and the periphery and the bottom sealed, and the outer surface of the inner box body is bonded with the inner surface of the outer box body; the box cover comprises an inner box cover and a cover top, the inner box cover is of a structure with the lower end open and the periphery and the top sealed, and the top of the inner box cover adheres to the lower surface of the cover top. The inner box cover is matched with the upper end opening of the inner box body in an inserted mode, the outer surface of the inner box cover and the inner surface of the opening edge are covered with coherent and sealed thermal shrinkage films, and the outer surface of the inner box body and the inner surface of the opening edge are also covered with coherent and sealed thermal shrinkage films. Through the innovative double-layer structure and the thermal shrinkage film sealing technology, the problems that in the prior art, disposable plastic packaging cannot be repeatedly used, and reusable packaging is insufficient in sealing performance are effectively solved, and the packaging box has the excellent moisture-proof performance, environmental protection performance, practicability and attractiveness.

Description

TECHNICAL FIELD

[0001] The utility model relates to packaging technical field, concretely is a kind of moisture-proof packaging box. BACKGROUND

[0002] In the product field of humidity-sensitive products such as food, electronic components, moisture-proof packaging with good sealing is a key element to ensure product quality and safety. The mainstream solution on the market currently adopts disposable plastic packaging. Although these packages can provide excellent moisture-proof performance, they have obvious sustainability problems: once opened, they cannot be sealed again. For items that need to be stored for a long period of time and opened multiple times, this structure is not suitable. Reusable packaging, such as common zippered bags and flip-top boxes, often fails to achieve the desired sealing effect, especially in long-term storage or high-humidity environments, which can easily cause the contents to become damp and deteriorate.

[0003] Therefore, there is an urgent need for a new moisture-proof packaging device to provide an effective solution to the deficiencies of the prior art. SUMMARY

[0004] The utility model aims at providing a moisture-proof packaging box to solve the problems raised in the background.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] The utility model relates to packaging technical field, concretely is

[0007] A moisture-proof packaging box includes a box body and a lid. The box body includes an inner box body and an outer box body. Both the inner box body and the outer box body are open at the top, sealed on the sides and bottom. The outer surface of the inner box body is bonded to the inner surface of the outer box body. The lid includes an inner lid and a lid top. The inner lid is open at the bottom, sealed on the sides and top. The top of the inner lid is bonded to the lower surface of the lid top. The inner lid is inserted into the upper end of the inner box body. The outer surface of the inner lid and the inner surface of the mouth along are covered with a continuous and sealed heat-shrinkable film. The outer surface of the inner box body and the inner surface of the mouth along are also covered with a continuous and sealed heat-shrinkable film.

[0008] Further, a sealing ring is installed on the outer wall of the inner lid. The sealing ring is located on the outer side of the heat-shrinkable film.

[0009] Further, a sealing ring groove is provided on the outer wall of the inner lid. The heat-shrinkable film is bonded to the sealing ring groove. The sealing ring is bonded in the sealing ring groove.

[0010] Further, two sealing rings are installed on the outer wall of the inner lid.

[0011] Further, the box body and the box cover are both made of paper material.

[0012] Further, the heat-shrinkable film on the inner box cover and the inner box body is made of food-grade material.

[0013] Further, the outer contour of the top of the cover is the same as the outer contour of the outer box body.

[0014] Compared with the prior art, the utility model has the beneficial effects that:

[0015] 1. The utility model discloses a double-layer structure and heat-shrinkable film sealing, which can effectively block external moisture, ensure that the contents are not damp and deteriorate in long-term storage or high-humidity environment, and the appearance treatment material of the outer box body is more free because the outer box body does not contact the internal articles.

[0016] 2. The utility model discloses that the upper and lower two sealing rings cooperate with the heat-shrinkable film to form a multiple sealing structure, which significantly improves the moisture-proof effect of the packaging box in a high-humidity environment. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is a structure diagram of a moisture-proof packaging box.

[0018] Fig. 2 It is a structure diagram of an inner box cover and a cover top.

[0019] Fig. 3 It is a structure diagram of an inner box cover and a sealing ring.

[0020] Fig. 4 It is a structure diagram of an outer box body and an inner box body.

[0021] In the drawing: 1, outer box body; 2, inner box body; 3, inner box cover; 4, sealing ring groove; 5, sealing ring; 6, cover top; 7, box cover; 8, box body. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Embodiment 1: Please refer to Figs. 1-4 A moisture-proof packaging box comprises a box body 8 and a box cover 7. The box body 8 comprises an inner box body 2 and an outer box body 1. Both the inner box body 2 and the outer box body 1 are open at the top and sealed at the bottom. The outer surface of the inner box body 2 is bonded to the inner surface of the outer box body 1. The box cover 7 comprises an inner box cover 3 and a cover top 6. The inner box cover 3 is open at the bottom and sealed at the top. The top of the inner box cover 3 is bonded to the lower surface of the cover top 6. The inner box cover 3 is inserted into the upper end of the inner box body 2. The outer surface of the inner box cover 3 and the inner surface of the mouth along are covered with a continuous and sealed heat-shrinkable film. The outer surface of the inner box body 2 and the inner surface of the mouth along are also covered with a continuous and sealed heat-shrinkable film.

[0024] The box body 8 and the box cover 7 are both made of paper material.

[0025] The heat-shrinkable films on the inner box cover 3 and the inner box body 2 are both made of food-grade material.

[0026] The outer contour of the cover top 6 is the same in shape and size as the outer contour of the outer box body 1.

[0027] Working principle of the embodiment:

[0028] In the embodiment, the inner box cover 3 and the upper end of the inner box body 2 are preliminarily sealed by insertion fitting. In order to ensure the reliability of the sealing, the outer surface of the inner box cover 3 and the inner surface of the mouth along, and the outer surface of the inner box body 2 and the inner surface of the mouth along are all covered with a continuous and sealed heat-shrinkable film. The heat-shrinkable film will shrink after being heated, tightly adhering to the surface of the box body and the box cover, forming a good airtight sealing layer, effectively preventing moisture from entering. The box cover 7 is composed of the inner box cover 3 and the cover top 6. The inner box cover 3 is open at the bottom and sealed at the top, and its top is bonded to the lower surface of the cover top 6. The outer contour of the cover top 6 is the same in shape and size as the outer contour of the outer box body 1, ensuring the tight fit when the box cover is closed, and further enhancing the moisture-proof effect.

[0029] In the embodiment, the box body 8 and the box cover 7 are both made of paper material, which is environmentally friendly and recyclable. The heat-shrinkable films on the inner box cover 3 and the inner box body 2 are both made of food-grade material, ensuring the safety of the packaging and being suitable for products sensitive to humidity such as food and electronic components.

[0030] In the embodiment, the moisture-proof packaging box adopts a double-layer structure (the inner box body 2 and the outer box body 1) and heat-shrinkable film sealing, which not only effectively blocks external moisture, ensuring that the contents will not be damp and deteriorate in long-term storage or high-humidity environments, but also allows the outer box body 1 to be more freely treated in appearance since it does not come into contact with the internal items.

[0031] The embodiment is different from the disposable plastic packaging. The packaging box is sealed by the heat-shrinkable film and the plug-in cooperation of the inner box cover 3 and the inner box body 2, and realizes the function of repeated opening and closing. Users can open and close the packaging box for many times without damaging the packaging structure, which is suitable for items that need to be placed for a long time and opened many times.

[0032] The embodiment effectively solves the problems of the disposable plastic packaging in the prior art, such as non-reusable and insufficient sealing of reusable packaging, and has excellent moisture-proof performance, environmental protection, practicality and aesthetics through the innovative double-layer structure and heat-shrinkable film sealing technology.

[0033] Embodiment 2: Please refer to Figs. 2-3 A moisture-proof packaging box, which is different from the embodiment 1 in that the outer wall around the inner box cover 3 is provided with a sealing ring 5, and the sealing ring 5 is located outside the heat-shrinkable film.

[0034] The outer wall around the inner box cover 3 is provided with a sealing ring groove 4, the heat-shrinkable film is tightly attached to the sealing ring groove 4, and the sealing ring 5 is attached in the sealing ring groove 4.

[0035] The outer wall around the inner box cover 3 is provided with two sealing rings 5.

[0036] The working principle of the embodiment is as follows:

[0037] In the embodiment, the outer wall around the inner box cover 3 is provided with a sealing ring groove 4, the heat-shrinkable film is tightly attached to the surface of the sealing ring groove 4, and there is no gap between the sealing ring 5 and the heat-shrinkable film after the sealing ring 5 is installed, which further enhances the sealing performance. The outer wall around the inner box cover 3 is provided with two sealing rings 5, which are located outside the heat-shrinkable film. When the inner box cover 3 is plugged into the inner box body 2, the upper and lower sealing rings 5 form a double-sealing barrier with the mouth of the inner box body 2, effectively preventing the intrusion of moisture. The sealing ring 5 is fixed in the sealing ring groove 4 by adhesion, which ensures its stability and reliability in long-term use.

[0038] In the embodiment, the upper and lower sealing rings 5 cooperate with the heat-shrinkable film to form a multiple-sealing structure, which significantly improves the moisture-proof effect of the packaging box in a high-humidity environment. The stable installation and double-sealing design of the sealing ring 5 enable the packaging box to be opened and closed many times without affecting the sealing performance, thereby prolonging the service life.

Claims

1. A moisture-proof packaging box comprising a box body (8) and a box cover (7), characterized in that: the box body (8) comprises an inner box body (2) and an outer box body (1), both of which are open at the top and sealed at the periphery and the bottom, and the outer surface of the inner box body (2) is bonded to the inner surface of the outer box body (1); the box cover (7) comprises an inner box cover (3) and a cover top (6), the inner box cover (3) is open at the bottom and sealed at the periphery and the top, and the top of the inner box cover (3) is bonded to the lower surface of the cover top (6); the inner box cover (3) is inserted into the upper end of the inner box body (2), the outer surface of the inner box cover (3) and the inner surface of the mouth along are covered with a continuous and sealed heat-shrinkable film, and the outer surface of the inner box body (2) and the inner surface of the mouth along are also covered with a continuous and sealed heat-shrinkable film.

2. The moisture resistant packaging box of claim 1, wherein: A sealing ring (5) is installed on the outer wall of the periphery of the inner box cover (3), and the sealing ring (5) is located on the outside of the heat-shrinkable film.

3. The moisture resistant packaging box of claim 2, wherein: A sealing ring groove (4) is provided on the outer wall of the periphery of the inner box cover (3), the heat-shrinkable film is attached to the sealing ring groove (4), and the sealing ring (5) is bonded in the sealing ring groove (4).

4. The moisture resistant packaging box of claim 1, wherein: Two sealing rings (5) are installed on the outer wall of the periphery of the inner box cover (3).

5. The moisture resistant packaging box of claim 1, wherein: Both the box body (8) and the box cover (7) are made of paper material.

6. The moisture resistant packaging box of claim 1, wherein: Both the heat-shrinkable film on the inner box cover (3) and the inner box body (2) are made of food-grade material.

7. The moisture resistant packaging box of claim 1, wherein: The outer contour of the periphery of the cover top (6) is the same in shape and size as the outer contour of the periphery of the outer box body (1).

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