Environment-friendly oil-proof disposable meal box

Abstract

The utility model discloses an environment-friendly oil-proof disposable lunch box, which belongs to the technical field of disposable tableware and comprises a lunch box body and a lunch box cover, the interior of the lunch box body is hollow to form a lunch box cavity, the bottom of the lunch box cavity is closed to form a lunch box bottom, and a lunch box opening matched with the lunch box cover is arranged at the top of the lunch box cavity. The edge of the lunch box opening and the lunch box cover are jointly provided with a locking mechanism for fixing the lunch box body and the lunch box cover; the lunch box body and the lunch box cover are both made of multi-layer composite paper, the multi-layer composite paper is sequentially provided with a protective layer, an outer base paper layer, a heat preservation and insulation layer, an inner base paper layer and a blocking layer in the thickness direction, and the face, close to the blocking layer, of the multi-layer composite paper is located on the inner side of the lunch box body and the inner side of the lunch box cover; the disposable meal box can prevent liquid from permeating, has a certain heat preservation effect on food, and can prevent a user from being scalded due to the fact that the temperature of the food is too high.

Description

Technical Field

[0001] The utility model relates to the technical field of disposable tableware, in particular to an environmentally friendly and oil-proof disposable lunch box. Background Art

[0002] As people's pace of life becomes faster and faster, people's meal time on weekdays is very tight. Therefore, most workers now choose to order takeout or pack and take out for their work meals, which is convenient for eating at their workstations. Takeout or packed meals are served in disposable tableware. Traditional disposable lunch boxes are made of plastic. Plastic has a great impact on the environment because it is difficult to degrade and is not environmentally friendly. Therefore, disposable lunch boxes with paper as the base material have appeared. Disposable paper lunch boxes are more environmentally friendly because they are easy to degrade and have gradually become the mainstream of disposable lunch boxes. However, disposable paper lunch boxes are easily penetrated by oil and water in food, resulting in oil and water on the table during or after the meal. In addition, both disposable plastic lunch boxes and disposable paper lunch boxes have poor thermal insulation performance, which is not conducive to the insulation of food and can easily cause burns to human hands by products with higher temperatures.

[0003] The Chinese patent with publication number CN214566773U discloses a disposable paper pulp lunch box, which relates to the technical field of tableware, including a box body and a box cover, wherein the outer peripheral edge of the box body is bent outward and downward in an arc shape to form an edge portion, the outer peripheral edge of the box cover is provided with a buckling portion covering the edge portion, the outer edge of the buckling portion protrudes downward from the outer edge of the edge portion, the inner side wall of the buckling portion is provided with a clamping portion, and the box cover is provided with a pressing portion, and the outer ring side wall of the pressing portion abuts against the inner wall of the box body; the disposable paper pulp lunch box is buckled on the edge portion by the buckling portion provided on the box cover, combined with the clamping portion The clamping action between the upper and lower parts and the edge parts makes the edge parts and the buckling parts fit tightly. In addition, the pressing part on the box cover supports the edge parts from the inside, and cooperates with the buckling part to support the edge parts from the outside, so as to achieve effective compression on both sides of the edge parts, thereby improving the sealing performance of the lunch box. However, there is no structure to isolate oil and water inside the lunch box, which may easily cause the oil and water in the food to penetrate out of the lunch box. Moreover, the lunch box is made of only pulp, and its heat insulation performance is poor. If the temperature of the food contained is high, the heat may be easily transferred to the outside through the lunch box, causing scalds to the user. Therefore, there is still room for improvement. Utility Model Content

[0004] In view of the technical defects existing in the background technology, the utility model proposes an environmentally friendly and oil-proof disposable lunch box, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0005] An environmentally friendly and oil-proof disposable lunch box, comprising a lunch box body and a lunch box cover, wherein the lunch box body is hollow inside to form a lunch box cavity, the bottom of the lunch box cavity is closed to form a lunch box bottom, the top of the lunch box cavity is provided with a lunch box opening matching the lunch box cover, and the edge of the lunch box opening and the lunch box cover are jointly provided with a locking mechanism to fix the lunch box body and the lunch box cover;

[0006] The lunch box body and the lunch box cover are both made of multi-layer composite paper, and the multi-layer composite paper is provided with a protective layer, an outer base paper layer, a thermal insulation layer, an inner base paper layer, and a barrier layer in sequence along the thickness direction. The multi-layer composite paper is located on the inner side of the lunch box body and the inner side of the lunch box cover close to the barrier layer.

[0007] As a further technical solution of the utility model, a plurality of connection blocks are arranged in the thermal insulation layer, and two ends of the connection blocks are fixedly connected to the outer base paper layer and the inner base paper layer respectively.

[0008] As a further technical solution of the utility model, the outer base paper layer and the inner base paper layer are both made of wood pulp paper with a grammage of 40-120gsm.

[0009] As a further technical solution of the utility model, the outer base paper layer forms a printed surface by printing ink on the side close to the protective layer, and the protective layer is formed by coating a coating having one or more functions of waterproofing, anti-oxidation, wear resistance, and high temperature resistance on the surface of the outer base paper layer and then curing it.

[0010] As a further technical solution of the utility model, the barrier layer is formed by coating a barrier material on the surface of the inner base paper layer and then curing it.

[0011] As a further technical solution of the utility model, a partition plate is provided in the lunch box cavity to divide the lunch box cavity into at least two spaces, and the partition plate extends from the bottom of the lunch box to the lunch box opening.

[0012] As a further technical solution of the utility model, the locking mechanism includes a plurality of locking blocks and a plurality of locking slots that match each other, the locking blocks are arranged on the top edge of the lunch box body, and the locking slots are arranged on the bottom edge of the lunch box cover.

[0013] As a further technical solution of the utility model, the interior of the lunch box cover is hollow to form a lunch box cover cavity, the top of the lunch box cover cavity is closed and the bottom is provided with a lunch box cover opening that matches the top of the lunch box body.

[0014] The beneficial effects of the utility model are:

[0015] The lunch box body of the utility model is used to hold various foods. The lunch box body and the lunch box cover are fixed by a locking mechanism to form a disposable lunch box. The lunch box is made of multi-layer composite paper. The surface of the inner base paper layer close to the inside of the lunch box is coated with a barrier layer that can block liquids such as oil and water in the food, and the surface of the outer base paper layer close to the outside of the lunch box is coated with a protective layer with functions such as waterproof, anti-oxidation, wear-resistant, and high-temperature resistant, which can prevent liquids such as oil and water from penetrating into the inside of the multi-layer composite paper, thereby improving the protective performance of the lunch box. In addition, the inside of the multi-layer composite paper has a thermal insulation layer that can keep warm and insulate, so that the lunch box has a certain thermal insulation effect on the food, and can prevent the user from being scalded due to excessively high food temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a main cross-sectional view of an environmentally friendly and oil-proof disposable lunch box.

[0017] Figure 2 The schematic diagram of the structure is an environmentally friendly and oil-proof disposable lunch box.

[0018] Figure 3 It is a schematic diagram of disassembling an environmentally friendly and oil-proof disposable lunch box.

[0019] Figure 4 The present invention is a schematic diagram of the structure of a multi-layer composite paper of an environmentally friendly and oil-proof disposable lunch box.

[0020] Figure 5 The present invention is a schematic diagram of another embodiment of a lunch box body of an environmentally friendly and oil-proof disposable lunch box.

[0021] Figure 6 The present invention is a structural schematic diagram of a lunch box cover of an environmentally friendly and oil-proof disposable lunch box.

[0022] Among them: lunch box body 1, lunch box cavity 11, lunch box bottom 12, partition plate 13, lunch box cover 2, lunch box cover cavity 21, locking mechanism 3, locking card block 31, locking card slot 32, multi-layer composite paper 4, protective layer 41, outer base paper layer 42, thermal insulation layer 43, inner base paper layer 44, barrier layer 45, connecting block 46, printing surface 47. DETAILED DESCRIPTION

[0023] The implementation methods of the present invention are described below in conjunction with the accompanying drawings and relevant embodiments. The implementation methods of the present invention are not limited to the following embodiments, and the present invention involves relevant necessary components in this technical field, which should be regarded as common knowledge in this technical field and can be known and mastered by technical personnel in this technical field.

[0024] like Figure 1-4As shown, an environmentally friendly and oil-proof disposable lunch box includes a lunch box body 1 and a lunch box cover 2. The interior of the lunch box body 1 is hollow to form a lunch box cavity 11. The bottom of the lunch box cavity 11 is closed to form a lunch box bottom 12. The top of the lunch box cavity 11 is provided with a lunch box opening that matches the lunch box cover 2. The edge of the lunch box opening and the lunch box cover 2 are jointly provided with a locking mechanism 3 that fixes the lunch box body 1 and the lunch box cover 2; the lunch box body 1 and the lunch box cover 2 are both made of multi-layer composite paper 4, and the multi-layer composite paper 4 is provided with a protective layer 41, an outer base paper layer 42, a thermal insulation layer 43, an inner base paper layer 44, and a barrier layer 45 in the thickness direction. The side of the multi-layer composite paper 4 close to the barrier layer 45 is located on the inner side of the lunch box body 1 and the inner side of the lunch box cover 2.

[0025] After the lunch box body 1 and the lunch box cover 2 of the utility model are fixed by the locking mechanism 3, the internal lunch box cavity 11 forms a closed space, and the lunch box cavity 11 can be used to hold various foods. The locking mechanism 3 is preferably arranged at the edges of the lunch box body 1 and the lunch box cover 2, and the buckle and the slot match each other, so that the lunch box body 1 and the lunch box cover 2 are fixed to form a disposable lunch box; the lunch box bottom 12 is a structure at the bottom of the lunch box body 1 for bearing the weight of food. The shape of the lunch box body 1 is preferably an inverted frustum, and its cross-sectional area increases from the lunch box bottom 12 to the lunch box mouth, so that the disposable lunch box can be easier to grasp and hold in the hand, and the caliber of the lunch box mouth is larger, which is conducive to the user to take out and eat the food in the disposable lunch box.

[0026] The lunch box body 1 and the lunch box cover 2 of the utility model are both made of a multi-layer composite paper 4, and the multi-layer composite paper 4 is composited in sequence along the thickness direction by an outer base paper layer 42, a thermal insulation layer 43, and an inner base paper layer 44, wherein the protective layer 41 is formed by coating a coating having one or more functions of waterproofing, anti-oxidation, wear resistance, and high temperature resistance on the surface of the outer base paper layer 42 and then curing the coating. The functional coating is preferably a mixture of waterproofing agents, antioxidants, wear resistance agents, and high temperature resistance agents commonly used for paper on the market, so that the protective layer 41 gives the outer base paper layer 42 functions of waterproofing, anti-oxidation, wear resistance, and high temperature resistance. The outer base paper layer 42 is located near the outside of the lunch box body 1, which can improve the protective strength of the disposable lunch box; in addition, the barrier layer 45 is formed by coating the barrier material on the surface of the inner base paper layer 44 After curing, the barrier material is selected from one of starch-based barrier material, cellulose-based barrier material, and chitosan-based barrier material. The barrier material can block liquids such as oil and water in food, and prevent the liquid from penetrating into the interior of the multi-layer composite paper 4, which may reduce its strength or even break it; the thermal insulation layer 43 is selected from one of starch-based foaming material, cellulose-based foaming material, polylactic acid foaming material, and polyhydroxyalkanoate foaming material. These materials are all degradable foaming materials to ensure the environmental protection of the multi-layer composite paper 4, and many dense cavities are formed during the foaming process of the foaming material, so that the thermal insulation layer 43 has good thermal insulation effect. The disposable lunch box can have a certain insulation effect on the food contained inside, and can prevent the user from being scalded by excessive food temperature.

[0027] In summary, the lunch box body 1 of the utility model is used to hold various foods. The lunch box body 1 and the lunch box cover 2 are fixed by a locking mechanism 3 to form a disposable lunch box. The lunch box is made of a multi-layer composite paper 4. The surface of the inner base paper layer 44 close to the inside of the lunch box is coated with a barrier layer 45 that can block liquids such as oil and water in the food, and the surface of the outer base paper layer 42 close to the outside of the lunch box is coated with a protective layer 41 with functions such as waterproof, antioxidant, wear-resistant, and high-temperature resistant, which can prevent liquids such as oil and water from penetrating into the inside of the multi-layer composite paper 4, thereby improving the protective performance of the lunch box. The multi-layer composite paper 4 has a thermal insulation layer 43 that can keep warm and insulate, so that the lunch box has a certain insulation effect on the food, and can prevent the user from being scalded due to excessive food temperature.

[0028] like Figure 4 As shown, as one of the preferred embodiments of the utility model, a plurality of connection blocks 46 are provided in the thermal insulation layer 43, and the two ends of the connection blocks 46 are fixedly connected to the outer base paper layer 42 and the inner base paper layer 44 respectively.

[0029] The connection block 46 of the utility model is preferably made of natural fibers with high strength such as hemp fiber and bamboo fiber. Since the thermal insulation layer 43 is a foam material with low strength, the multi-layer composite paper 4 is prone to delamination under the action of external force. The connection block 46 serves as an intermediary for fixedly connecting the outer base paper layer 42 and the inner base paper layer 44, which can improve the stability of the internal structure of the multi-layer composite paper 4.

[0030] As one of the preferred embodiments of the present invention, both the outer base paper layer 42 and the inner base paper layer 44 are made of wood pulp paper with a grammage of 40-120 gsm.

[0031] The outer base paper layer 42 and the inner base paper layer 44 of the utility model are both made of degradable wood pulp paper to improve the environmental friendliness of the disposable lunch box. The gram weight of the wood pulp paper needs to be adaptively adjusted according to the actual amount of food contained in the lunch box. The heavier the gram weight of the wood pulp paper, the higher the strength. Then, the larger the capacity of the disposable lunch box and the heavier the food that may be contained, the more wood pulp paper with a larger gram weight needs to be used so that the disposable lunch box can stably contain food.

[0032] like Figure 4 As shown, as one of the preferred embodiments of the utility model, the outer base paper layer 42 is formed with a printing surface 47 by printing ink on the side close to the protective layer 41 .

[0033] The outer surface of the disposable lunch box may need to be printed with promotional information, decorative patterns and other contents. Therefore, a printing surface 47 is formed by printing ink on the side of the outer base paper layer 42 close to the protective layer 41. The printing surface 47 is the promotional information, decorative patterns and other contents formed by printing, and the protective layer 41 can prevent the printing ink from being penetrated by external liquids and causing discoloration, blurring and the like.

[0034] like Figure 1 , 3 As shown in FIG. 5 , as one of the preferred embodiments of the present utility model, a partition plate 13 is provided in the lunch box cavity 11 to divide the lunch box cavity 11 into at least two spaces, and the partition plate 13 extends from the lunch box bottom 12 to the lunch box opening.

[0035] The partition plate 13 of the utility model divides the lunch box cavity 11 into at least two spaces for holding food, so that at least two different types of food can be held in the lunch box cavity 11, thereby preventing different foods from mixing with each other or dry food from being soaked by wet food and affecting the flavor of the food; in addition, the shape of the partition plate 13 can be changed so that it can divide the lunch box cavity 11 into three or more spaces, thereby being able to hold more different types of food.

[0036] like Figure 1 , 2As shown in Figures 3, 5 and 6, as one of the preferred embodiments of the utility model, the locking mechanism 3 includes a plurality of locking blocks 31 and a plurality of locking slots 32 that match each other. The locking blocks 31 are arranged at the top edge of the lunch box body 1, and the locking slots 32 are arranged at the bottom edge of the lunch box cover 2.

[0037] The utility model forms a disposable lunch box after fixing the lunch box body 1 and the lunch box cover 2 through the locking mechanism 3. In the locking mechanism 3, four locking blocks 31 and four locking slots 32 are preferably arranged, and a space with a width greater than the locking slots 32 is provided between adjacent locking blocks 31. The locking slots 32 are placed in the space between adjacent locking blocks 31, so that the lunch box cover 2 covers the lunch box opening, and then the lunch box cover 2 is rotated to make the locking slots 32 sleeve on the outer surface of the locking blocks 31, thereby completing the fixing of the lunch box body 1 and the lunch box cover 2. When the lunch box cover 2 needs to be opened, the lunch box cover 2 is further rotated to disengage the locking blocks 31 from the locking slots 32. The locking mechanism 3 can firmly fix the lunch box body 1 and the lunch box cover 2 in the above manner to prevent the food inside the lunch box from falling out of the gap between the lunch box body 1 and the lunch box cover 2.

[0038] like Figure 1 , 6 As shown, as one of the preferred embodiments of the utility model, the lunch box cover 2 is hollow inside to form a lunch box cover cavity 21, the top of the lunch box cover cavity 21 is closed and the bottom is provided with a lunch box cover opening that matches the top of the lunch box body 1.

[0039] The lunch box cover 2 of the utility model can hold food through the lunch box cover cavity 21. During dining, the dishes can be divided by the lunch box cover 2 to avoid the dishes pressed at the bottom of the lunch box body 1 being difficult to pick up, or the lunch box cover 2 can be used to hold rice, thereby playing a role similar to a bowl, which is convenient for users to eat.

[0040] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An environmentally friendly and oil-proof disposable lunch box, comprising a lunch box body (1) and a lunch box cover (2), characterized in that: The lunch box body (1) is hollow inside to form a lunch box cavity (11); the bottom of the lunch box cavity (11) is closed to form a lunch box bottom (12); the top of the lunch box cavity (11) is provided with a lunch box opening that matches the lunch box cover (2); the edge of the lunch box opening and the lunch box cover (2) are jointly provided with a locking mechanism (3) for fixing the lunch box body (1) and the lunch box cover (2); The lunch box body (1) and the lunch box cover (2) are both made of a multi-layer composite paper (4), wherein the multi-layer composite paper (4) is provided with a protective layer (41), an outer base paper layer (42), a thermal insulation layer (43), an inner base paper layer (44), and a barrier layer (45) in sequence along the thickness direction, and a side of the multi-layer composite paper (4) close to the barrier layer (45) is located on the inner side of the lunch box body (1) and the inner side of the lunch box cover (2).

2. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: A plurality of connection blocks (46) are provided in the thermal insulation layer (43), and two ends of the connection blocks (46) are respectively fixedly connected to the outer base paper layer (42) and the inner base paper layer (44).

3. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: The outer base paper layer (42) and the inner base paper layer (44) are both made of wood pulp paper with a grammage of 40-120 gsm.

4. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: The side of the outer base paper layer (42) close to the protective layer (41) is formed into a printed surface (47) by printing ink.

5. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: The barrier layer (45) is formed by coating a barrier material on the surface of the inner base paper layer (44) and then curing the coating.

6. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: A partition plate (13) is provided in the lunch box cavity (11) for partitioning the lunch box cavity (11) into at least two spaces, and the partition plate (13) extends from the lunch box bottom (12) to the lunch box opening.

7. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: The locking mechanism (3) comprises a plurality of mutually matching locking blocks (31) and a plurality of locking slots (32), wherein the locking blocks (31) are arranged on the top edge of the lunch box body (1), and the locking slots (32) are arranged on the bottom edge of the lunch box cover (2).

8. The environmentally friendly and oil-proof disposable lunch box according to claim 1, characterized in that: The interior of the lunch box cover (2) is hollow to form a lunch box cover cavity (21); the top of the lunch box cover cavity (21) is closed and the bottom is provided with a lunch box cover opening that matches the top of the lunch box body (1).

Images