Multiple sealing PVC food packaging box

Abstract

The utility model discloses a multiple sealing PVC food packaging box, including box body and box cover, be equipped with the inner recessed flange on the box body, the flange upper end surface is equipped with sealing strip no.

Description

Technical Field

[0001] This utility model relates to the field of food packaging technology, and in particular to a multi-sealed PVC food packaging box. Background Technology

[0002] PVC packaging boxes are made of heat-sensitive thermoplastic plastic that is easily decomposed when heated. PVC packaging boxes have good overall performance, low cost, and are also environmentally friendly materials. Therefore, they have been widely favored by the market in recent years and are commonly used in food stores to package baked biscuits and other similar products.

[0003] However, existing PVC packaging boxes are simply assembled by snapping the box body and lid together, which is not airtight. When storing baked crispy cookies for a long time, the cookies will easily soften and affect their taste.

[0004] Therefore, we propose a multi-sealed PVC food packaging box to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a multi-sealed PVC food packaging box to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A multi-sealed PVC food packaging box includes a box body and a box lid. The box body has a concave convex edge, and a sealing strip is provided on the upper end face of the convex edge. A stepped platform is formed between the convex edge and the box body, and a sealing groove is provided on the upper end face of the stepped platform. The box lid has a cover edge, and a sealing strip is provided on the lower end face of the cover edge. The inner wall of the box lid has a stepped edge, and a sealing groove is provided on the lower end face of the stepped edge. When the box body and the box lid are fastened, the sealing strip is embedded in the sealing groove, and the sealing strip is embedded in the sealing groove.

[0008] The lid is symmetrically hinged with pull strips on both sides, and the box body is symmetrically fixed with positioning posts on both sides. The positioning posts pass through the positioning holes at the lower end of the pull strips. The box body is also provided with protruding ridges on both sides, and the inner side of the pull strips is provided with several buckling teeth for hooking the protruding ridges.

[0009] A desiccant and a getter are installed inside the top of the lid.

[0010] In a further embodiment, the pressing surfaces of the first sealing strip and the second sealing groove, as well as the pressing surfaces of the second sealing strip and the first sealing groove, both adopt a conical surface structure.

[0011] In a further embodiment, the inner circle size of the cover edge is 0.5-1 mm larger than the outer circle size of the convex edge.

[0012] In a further embodiment, the positioning post is composed of a convex rod and a convex ball, and the inner diameter of the positioning hole of the pull bar is 0.5-1mm smaller than the outer diameter of the convex ball.

[0013] In a further embodiment, a hinge seat is fixed on the side wall of the box cover, and notched rings are installed at both ends of the hinge seat. A straight rod is fixed to the top of the pull bar, and the straight rod is rotatably installed in the notched ring. The notch length of the notched ring is 0.5-1mm smaller than the diameter of the straight rod.

[0014] In a further embodiment, the drying box consists of a hollow cavity and a hollow cover that are hinged together. The outer edge of the hollow cavity is provided with a retaining strip, and the outer edge of the hollow cover is provided with a buckle that hooks onto the retaining strip.

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

[0016] This invention uses double sealing strips and double sealing grooves to form a two-way stepped embedded seal, which extends the water vapor penetration path, enhances the sealing reliability, and effectively blocks the intrusion of external moisture. In addition, the pull strip hangs on the protruding ridge through the inverted tooth hook to achieve a firm lock between the lid and the box body. At the same time, the desiccant and absorbent inside the drying box slowly release moisture-absorbing components through the hollow structure, continuously maintaining a low humidity environment inside the box and prolonging the crispy taste of biscuits and other crispy foods. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the pull bar and protruding rib structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the box structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the box lid structure of this utility model;

[0021] Figure 5 This is a side view cross-sectional structural diagram of the present invention.

[0022] In the diagram: 1. Box body; 11. Raised edge; 12. Sealing strip one; 13. Stepped platform; 14. Sealing groove one; 2. Box lid; 21. Cover edge; 22. Sealing strip two; 23. Stepped edge; 24. Sealing groove two; 3. Pull strip; 31. Backtooth tooth; 32. Straight rod; 4. Positioning post; 41. Raised rod; 42. Raised ball; 5. Raised ridge; 6. Hinge seat; 61. Notched ring; 7. Drying box; 71. Hollow cavity; 72. Hollow cover; 73. Locking strip; 74. Fastening strip. Detailed Implementation

[0023] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 A multi-seal PVC food packaging box includes a box body 1 and a box lid 2. The box body 1 and the box lid 2 are made of food-grade PVC injection molding. During the injection molding of the box body 1, a sealing strip 12 made of soft PVC is integrally formed on the upper surface of the concave convex edge 11 at the top. A stepped platform 13 is formed between the outer ring of the convex edge 11 and the box wall. A sealing groove 14 is formed on the platform along the stepped platform 13. A soft PVC sealing strip 22 is provided on the lower surface of the cover edge 21 at the bottom of the box lid 2. The inner wall extends... Extending from the stepped edge 23, a sealing groove 24 is formed. When fastened, the cover edge 21 is fitted over the outside of the raised edge 11 with a gap of 0.5-1mm between them, which facilitates the alignment and fitting of the cover edge 21. At the same time, the sealing strip 22 is pressed into the sealing groove 14, and the sealing strip 12 is pressed into the sealing groove 24. The pressing surfaces of the sealing strip 12 and the sealing groove 24, as well as the pressing surfaces of the sealing strip 22 and the sealing groove 14, all adopt a conical surface structure. The conical pressing surface generates radial compression deformation, forming a two-way airtight barrier.

[0027] A hinge seat 6 is fixed to the side of the box cover 2. Four hinge seats 6 are symmetrically arranged. Each hinge seat 6 has a notched ring 61 fixed at both ends. A straight rod 32 is rotatably installed inside the notched ring 61. The straight rod 32 is fixed to the top of the pull strip 3. The notch of the notched ring 61 faces upward. The length of the notch is 0.5-1mm smaller than the diameter of the straight rod 32. The straight rod 32 is pressed into the notch of the notched ring 61 by interference fit, which is convenient for disassembly and assembly. When the pull strip 3 moves down, its inner back teeth 31 hook onto the protruding ridge 5 on the surface of the box body 1 for locking. The protruding rod 41 of the positioning post 4 is fixed to the outer wall of the box body 1. The inner diameter of the positioning hole of the pull strip 3 is 0.5-1mm smaller than the outer diameter of the convex ball 42. The convex ball 42 is forced into the positioning hole of the pull strip 3 to prevent the pull strip 3 from shaking.

[0028] Inside the top of the lid 2, there is a silica gel desiccant pack and an iron-based deoxidizer pack in the drying box 7. The drying box 7 is made of biodegradable PLA material. The hollow cavity 71 is fixed to the lid 2. The hollow cover 72 is hinged to the lower end of the lid 2. When the hollow cover 72 is closed, the buckle 74 is fastened to the outside of the locking strip 73, locking the hollow cover 72 and the hollow cavity 71. The drying box 7 slowly absorbs water vapor and oxygen inside the box through the hollow holes.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-sealed PVC food packaging box, comprising a box body (1) and a box lid (2), characterized in that: The box body (1) is provided with a concave convex edge (11), and a sealing strip (12) is provided on the upper end face of the convex edge (11). A stepped platform (13) is formed between the convex edge (11) and the box body (1), and a sealing groove (14) is opened on the upper end face of the stepped platform (13). The box cover (2) is provided with a cover edge (21), and a sealing strip (22) is provided on the lower end face of the cover edge (21). The inner wall of the box cover (2) is provided with a stepped edge (23), and a sealing groove (24) is opened on the lower end face of the stepped edge (23). When the box body (1) and the box cover (2) are fastened, the sealing strip (22) is embedded in the sealing groove (14), and the sealing strip (12) is embedded in the sealing groove (24). The lid (2) has pull strips (3) symmetrically hinged on both sides. The box body (1) has positioning posts (4) symmetrically fixed on both sides. The positioning posts (4) pass through the positioning holes at the lower end of the pull strips (3). The box body (1) also has protruding ridges (5) on both sides. The inner side of the pull strips (3) has several buckle teeth (31) for hooking the protruding ridges (5). A desiccant and a getter are installed inside the top of the lid (2).

2. The multi-sealed PVC food packaging box according to claim 1, characterized in that: The pressing surfaces of the sealing strip one (12) and the sealing groove two (24) and the sealing strip two (22) and the sealing groove one (14) are all tapered.

3. The multi-sealed PVC food packaging box according to claim 1, characterized in that: The inner circle size of the cover edge (21) is 0.5-1 mm larger than the outer circle size of the convex edge (11).

4. A multi-sealed PVC food packaging box according to claim 1, characterized in that: The positioning post (4) is composed of a convex rod (41) and a convex ball (42), and the inner diameter of the positioning hole of the pull bar (3) is 0.5-1mm smaller than the outer diameter of the convex ball (42).

5. A multi-sealed PVC food packaging box according to claim 1, characterized in that: A hinge seat (6) is fixed on the side wall of the box cover (2), and notch rings (61) are installed at both ends of the hinge seat (6). A straight rod (32) is fixed at the top of the pull bar (3), and the straight rod (32) is rotatably installed in the notch ring (61). The notch length of the notch ring (61) is 0.5-1mm smaller than the diameter of the straight rod (32).

6. A multi-sealed PVC food packaging box according to claim 1, characterized in that: The drying box (7) consists of a hollow cavity (71) and a hollow cover (72) that are hinged to each other. The outer edge of the hollow cavity (71) is provided with a retaining strip (73), and the outer edge of the hollow cover (72) is provided with a buckle (74) that hooks to the retaining strip (73).

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