Film-coated foam packaging box convenient to exhaust and drain

Abstract

The invention discloses a film-coated foam packaging box convenient to exhaust and drain, which comprises a box cover combination body, a containing cavity is formed in the box cover combination body, and an air hole communicated with the containing cavity is further formed in the outer wall of the box cover combination body; the outer surface of the box cover assembly is further coated with a plastic film, and receding holes corresponding to all the air holes are formed in the plastic film. Compared with the prior art, the box cover assembly has the advantages that the plastic film is arranged, and the air holes are formed in the plastic film, so that the ventilation and drainage functions of the air holes are not affected while the box cover assembly has enough structural strength.

Description

Technical Field

[0001] The present invention relates to the field of packing boxes, and more particularly to a film-coated foam packing box that facilitates exhaust and drainage. Background Art

[0002] Foam packing boxes are common packaging materials and are often used for packaging vegetables. The structural strength of the packing box is affected by the wall thickness of the material. A larger wall thickness results in higher structural strength, while a smaller wall thickness results in lower structural strength. However, a larger wall thickness means a larger amount of material used.

[0003] How to reduce the amount of material used while ensuring structural strength is a key research topic for packaging material manufacturers.

[0004] In view of this, the applicant of the present invention has conducted in-depth research on the above-mentioned defects in the prior art, and thus this case has arisen. Summary of the Invention

[0005] The main object of the present invention is to provide a film-coated foam packing box that facilitates exhaust and drainage, which can ensure the structure while reducing the amount of foam material used, and at the same time retain ventilation holes for vegetables to breathe.

[0006] To achieve the above object, the solution of the present invention is: A film-coated foam packing box that facilitates exhaust and drainage, including a box cover assembly. The box cover assembly has a cavity inside, and ventilation holes communicating with the cavity are formed on the outer wall of the box cover assembly. The outer surface of the box cover assembly is also covered with a plastic film, and clearance holes corresponding to each ventilation hole are formed on the plastic film.

[0007] Further, the clearance holes and the ventilation holes are arranged in one-to-one alignment.

[0008] Further, a plurality of clearance holes are evenly distributed on the plastic film. The number of clearance holes is more than the number of ventilation holes on the box cover assembly, and the distance between the centers of adjacent clearance holes is less than the aperture of the ventilation hole.

[0009] Further, a plurality of preset clearance positions are formed on the plastic film, and there are film pieces inside the preset clearance positions. After the plastic film is covered on the box cover assembly, the film pieces corresponding to the positions of the ventilation holes are removed to form the clearance holes.

[0010] Further, the film pieces are connected to the preset clearance positions through a breakable structure, and the film pieces corresponding to the positions of the ventilation holes are removed by breaking the breakable structure.

[0011] Further, the number of preset clearance positions on the plastic film is more than the number of ventilation holes on the box cover assembly. After the plastic film is covered on the box cover assembly, each ventilation hole corresponds to at least two clearance holes.

[0012] Further, the lid assembly includes a box body and a lid. The box body has an upper opening, and the lid covers the upper opening.

[0013] Further, the box body and the lid are made of foamed plastic material.

[0014] Further, the plastic film is a heat-shrinkable film.

[0015] Further, the plastic film is adhered to the outer surface of the lid assembly, and the adhesion part avoids the ventilation holes.

[0016] After adopting the above structure, a film-covered foam packing box for facilitating exhaust and drainage according to the present invention has at least the following beneficial effects: First, by covering the lid assembly with a plastic film, the lid assembly forms an integral structure, improving the overall structural strength of the lid assembly. The clearance holes on the plastic film do not interfere with the function of the ventilation holes.

[0017] Second, the clearance holes can be pre-drilled holes, which are aligned with the ventilation holes after being covered.

[0018] Alternatively, multiple clearance holes can be pre-set, and multiple clearance holes correspond to and communicate with one ventilation hole, saving the trouble of precise alignment.

[0019] Third, by setting multiple pre-set clearance positions, a film piece connected by a point-break structure is arranged in the middle of the pre-set clearance positions. After removing the film piece corresponding to the ventilation hole position, a clearance hole corresponding to the ventilation hole position can be obtained.

[0020] Fourth, the plastic film is a heat-shrinkable film, and after being covered, it is tightly attached to the lid assembly by heating. The plastic film is adhered to the lid assembly, so that the plastic film is more tightly connected to the lid assembly, which is more conducive to improving the connection strength.

[0021] Compared with the prior art, by setting a plastic film and providing ventilation holes on the plastic film, the lid assembly of the present invention has sufficient structural strength without affecting the ventilation and drainage functions of the ventilation holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of a film-covered foam packing box for exhausting and draining water according to the present invention.

[0023] Figure 2 It is an exploded structural schematic diagram of the present invention.

[0024] Figure 3 It is a planar structural schematic diagram of a plastic film evenly distributed with a plurality of clearance holes.

[0025] Figure 4 Schematic plan view of the plastic film with a diaphragm arranged in the clearance hole.

[0026] Figure 5 For Figure 4 Enlarged structural view at position A in

[0027] In the figure: Cover assembly 10; box body 1; cavity 11; cover body 2; ventilation hole 3; plastic film 4; clearance hole 41; preset clearance position 42; diaphragm 43; interrupted structure 44. Specific embodiments

[0028] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0029] As Figures 1 to 5 shown, it is a film-covered foam packing box for facilitating exhaust and drainage according to the present invention, including a cover assembly 10. There is a cavity 11 inside the cover assembly 10. A ventilation hole 3 communicating with the cavity 11 is further formed on the outer wall of the cover assembly 10. The outer surface of the cover assembly 10 is further covered with a plastic film 4. Clearance holes 41 corresponding to each ventilation hole 3 are formed on the plastic film 4.

[0030] In this way, for a film-covered foam packing box for facilitating exhaust and drainage according to the present invention, by covering the cover assembly 10 with a film, the cover assembly 10 forms an integral structure, and the overall structural strength of the cover assembly 10 is improved. The clearance holes 41 on the plastic film 4 do not interfere with the function of the ventilation holes 3. Each ventilation hole 3 can communicate with the outside through the clearance holes 41.

[0031] As the first embodiment of the present invention, preferably, the clearance holes 41 are arranged in one-to-one alignment with the ventilation holes 3. The clearance holes 41 can be pre-set hole positions and are aligned with the ventilation holes 3 after covering. In this way, the number of clearance holes 41 corresponds to the number of ventilation holes 3 one by one, and the positions of the clearance holes 41 and the ventilation holes 3 are accurately aligned. Since the number and area of the clearance holes 41 are reduced, when the plastic film 4 is bonded to the cover assembly 10, a larger bonding area can be obtained.

[0032] As the second embodiment of the present invention, preferably, a plurality of clearance holes 41 are evenly distributed on the plastic film 4. The number of clearance holes 41 is more than the number of ventilation holes 3 on the cover assembly 10, and the distance between the centers of adjacent clearance holes 41 is less than the aperture of the ventilation holes 3. By pre-setting a plurality of clearance holes 41, one ventilation hole 3 is correspondingly communicated through a plurality of clearance holes 41, saving the trouble of accurate alignment.

[0033] Preferably, a plurality of preset avoidance positions 42 are formed on the plastic film 4, and a film piece 43 is disposed within the preset avoidance positions 42; after the plastic film 4 is wrapped around the lid assembly 10, the film piece 43 corresponding to the position of the ventilation hole 3 is removed to form the avoidance hole 41. In this way, after the plastic film 4 is wrapped, the worker then removes the film piece 43 at the position of the ventilation hole 3, so that the ventilation hole 3 is exposed. In this way, the plastic film 4 can be adapted to foam packing boxes with various different positions of the ventilation holes 3, making it more flexible and having better adaptability.

[0034] Preferably, as Figure 4 and Figure 5 shown, the film piece 43 is connected to the preset avoidance position 42 through a point-break structure 44, and the film piece 43 corresponding to the position of the ventilation hole 3 is removed by disconnecting the point-break structure 44. By providing a plurality of preset avoidance positions 42, a film piece 43 connected through a point-break structure 44 is disposed in the middle of the preset avoidance positions 42. After the film piece 43 at the position corresponding to the ventilation hole 3 is removed, the avoidance hole 41 corresponding to the position of the ventilation hole 3 can be obtained.

[0035] The film piece 43 on the avoidance position can be made relatively large and cover one or more ventilation holes 3, or one film piece 43 can correspond to one ventilation hole 3; preferably, the number of preset avoidance positions 42 on the plastic film 4 is more than the number of ventilation holes 3 on the lid assembly 10; after the plastic film 4 is wrapped around the lid assembly 10, each ventilation hole 3 corresponds to at least two avoidance holes 41.

[0036] Preferably, the lid assembly 10 includes a box body 1 and a lid 2, the box body 1 has an upper opening, and the lid 2 is covered on the upper opening. After vegetables are placed in the cavity 11 in the box body 1, the lid 2 covers the upper opening to form the lid assembly 10. Then, the plastic film 4 is used for wrapping. Further, the box body 1 and the lid 2 are made of foamed plastic material.

[0037] Preferably, the plastic film 4 is a heat-shrinkable film. Preferably, the plastic film 4 is adhered to the outer surface of the lid assembly 10, and the adhered part avoids the ventilation hole 3. For the plastic film 4 with film pieces, after removing the film pieces at the positions corresponding to the ventilation holes 3, adhesion is performed. In this way, the flat plate can be pressed against the plastic film, so that the surfaces of the box body and the lid are slightly melted, and then adhered to the plastic film.

[0038] The plastic film 4 is a heat-shrinkable film and is tightly attached to the lid assembly 10 by heating after wrapping. The plastic film 4 is adhered to the lid assembly 10, so that the plastic film 4 is more tightly connected to the lid assembly 10, which is more conducive to improving the connection strength.

[0039] Compared with the prior art, by providing the plastic film 4 and arranging the ventilation holes 3 on the plastic film 4, the lid assembly 10 has sufficient structural strength without affecting the ventilation and drainage functions of the ventilation holes 3.

[0040] The above embodiments and diagrams do not limit the product form and style of the present invention. Any appropriate changes or modifications made by those of ordinary skill in the relevant technical field shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A film-coated foam packaging box that is convenient for exhaust and drainage, characterized in that: The box cover assembly comprises a box cover assembly having a cavity inside, and an air hole communicating with the cavity is formed on the outer wall of the box cover assembly; the outer surface of the box cover assembly is also covered with a plastic film, and the plastic film is formed with an air avoidance hole corresponding to each air hole.

2. A film-coated foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: The air avoidance holes are arranged in alignment with the air vents.

3. A film-coated foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: The plastic film is evenly distributed with a plurality of air-avoiding holes, the number of which is greater than the number of the air-permeable holes on the box cover assembly, and the distance between the centers of adjacent air-avoiding holes is smaller than the aperture of the air-permeable holes.

4. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: A plurality of preset air-avoiding positions are formed on the plastic film, and a film is arranged in the preset air-avoiding positions; after the plastic film is wrapped on the box cover assembly, the film corresponding to the position of the air-permeable hole is removed to form the air-avoiding hole.

5. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 4, characterized in that: The membrane is connected to the preset avoidance position through a point-breaking structure, and the membrane corresponding to the position of the air vent is removed by disconnecting the point-breaking structure.

6. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 5, characterized in that: The number of preset air avoidance positions on the plastic film is greater than the number of air vents on the box cover assembly; after the plastic film is wrapped around the box cover assembly, each air vent corresponds to at least two air avoidance holes.

7. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: The box-cover assembly comprises a box body and a cover body, the box body has an upper opening, and the cover body is arranged to cover the upper opening.

8. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 7, characterized in that: The box body and the cover body are made of foamed plastic material.

9. A film-covered foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: The plastic film is a heat shrinkable film.

10. The film-covered foam packaging box that facilitates air and water discharge as claimed in claim 1, characterized in that: The plastic film is bonded to the outer surface of the box cover assembly, and the bonding position avoids the vent hole.

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