Packaging technology of foam packaging box

Abstract

The invention discloses a packaging process of a foam packaging box, which comprises the following steps: S100, putting a product into a box body, and covering a cover body to form a box cover assembly; s200, the outer side of the box cover assembly is coated with a heat shrinkage film; and S300, hot pressing is conducted on the heat shrinkage film, so that the heat shrinkage film is bonded with the surfaces of the box body and the cover body. The laminated box cover assembly is pressed, so that the thermal shrinkage film is bonded with the outer surfaces of the box body and the cover body, and a tighter whole is formed. Therefore, the strength of the whole foam packaging box is improved. In this way, under the condition of the same strength grade, compared with a traditional packaging box, the wall thickness can be smaller, and the using amount of materials is reduced. And the thermal shrinkage film is arranged on the outer side of the box cover assembly, so that the foam box can be effectively prevented from being damaged and dropped.

Description

Technical Field

[0001] The invention relates to the field of packaging boxes, and in particular to a foam packaging box packaging process. Background Art

[0002] Foam packaging boxes are common packaging materials that can be used to package vegetables and other items. The structural strength of the packaging box is an important indicator of use. The traditional approach is to increase the wall thickness of the foam box to improve strength. However, a thicker wall means more material usage. In this way, being able to ensure sufficient strength on the basis of a thin wall box is the focus of research for foam packaging box companies.

[0003] With the development of automation technology, automated production lines for packaging boxes can greatly improve production efficiency. How to assist in strengthening the structure of packaging boxes on automated production lines is also a problem that needs to be solved urgently.

[0004] In view of this, the applicant conducted in-depth research on the above-mentioned defects in the prior art, which resulted in the present case. Summary of the invention

[0005] The main purpose of the present invention is to provide a foam packaging box packaging process, which has the characteristics of improving the structural strength of the packaging box and is easy to implement on an automated production line.

[0006] In order to achieve the above object, the solution of the present invention is: A foam packaging box packaging process comprises the following steps: S100: placing the product into the box and covering it with a cover to form a box-cover assembly; S200: Covering the outer side of the box cover assembly with a heat shrink film; S300: The heat shrinkable film is heat-pressed to make the heat shrinkable film adhere to the surface of the box body and the cover body.

[0007] Furthermore, in step S300, the heat shrinkable film is pressed using a heating plate.

[0008] Further, in step S300, the box cover assembly after lamination in step S200 is conveyed on a conveying device, the heating plate is arranged above and on both sides of the conveyor belt, and the heat pressing plate is installed on a spatial driving mechanism, and the spatial driving mechanism drives the heat pressing plate to contact or separate from the heat shrink film.

[0009] Furthermore, in step S300, the heat shrinkable film is pressed using a heat pressing roller.

[0010] Further, in step S300, the box cover assembly after the lamination in step S200 is conveyed on a conveying device, and the hot pressing rollers are arranged above and on both sides of the conveyor belt.

[0011] Furthermore, the heat-pressing roller is installed on a spatial driving mechanism, and the spatial driving mechanism drives the heat-pressing roller to contact or separate from the heat shrinkable film.

[0012] Furthermore, the surfaces of the box body and the cover body are provided with protruding marks, which are formed when the material is squeezed into the exhaust holes of the mold during the foaming process of the box body and the cover body; in step S300, the marks are fully bonded to the heat shrink film.

[0013] Furthermore, the imprint includes a plurality of parallel dot-broken-line-shaped monomers, and two adjacent monomers are staggered.

[0014] Furthermore, the imprint includes a plurality of monomers, and the monomers are densely spread on the surface of the box body and the cover body; and a plurality of small imprints in the form of folded lines are arranged in each monomer.

[0015] Furthermore, the box cover assembly is in a rectangular parallelepiped shape.

[0016] After adopting the above structure, the foam packaging box packaging process of the present invention has at least the following beneficial effects: 1. By pressing the box cover assembly after lamination, the heat shrink film is bonded to the outer surface of the box body and the cover to form a more compact whole. This increases the strength of the overall foam packaging box. In this way, compared with traditional packaging boxes with the same strength level, the wall thickness can be thinner, saving the amount of material used. In addition, since there is a heat shrink film on the outside of the box cover assembly, it can effectively prevent the foam box from being damaged and falling off.

[0017] Second, the heat shrinkable film is bonded to the cover or box body by heat pressing, such as using a heated plate or a hot pressing roller to press the heat shrinkable film so that the surface of the foam box slightly melts and bonds to the heat shrinkable film.

[0018] 3. When the box cover assembly after lamination is being transported by a conveying device (such as a conveyor belt), the hot pressing of S300 is carried out on the conveyor belt. After the hot pressing is completed, the box cover assembly continues to be transported, thus realizing continuous production with high production efficiency.

[0019] Fourth, using the imprints produced during the production of foam materials, since the imprints are protruding from the surface of the cover and the box body, the imprints are first bonded to the heat shrink film to form a multi-point bonding structure. If the hot pressing time is longer, the surface of the cover and the box cover can be bonded as a whole.

[0020] Compared with the prior art, the present invention further bonds the heat shrinkable film to the cover body and the box cover by heat pressing the box cover assembly covered with the heat shrinkable film, thereby forming a tighter whole, ensuring structural strength while reducing the amount of foam material used. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention relates to a structural schematic diagram of a first embodiment of a foam packaging box packaging process.

[0022] Figure 2 The present invention relates to a structural schematic diagram of a second embodiment of a foam packaging box packaging process.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the foam packaging box.

[0024] Figure 4 This is a schematic diagram of the three-dimensional exploded structure of the foam packaging box.

[0025] Figure 5 This is a schematic diagram of the three-dimensional decomposition structure of the foam packaging box from another angle.

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the cover body.

[0027] Figure 7 Schematic diagram of the planar structure of another type of imprint.

[0028] In the figure: Box body 1; cover body 2; box cover assembly 3; imprint 31; heat shrink film 4; hot pressing plate 5; hot pressing roller 6; space driving mechanism 7; conveyor belt 8. DETAILED DESCRIPTION

[0029] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0030] like Figures 1 to 7 As shown, it is a foam packaging box packaging process according to the present invention, comprising the following steps: S100: placing the product into the box body 1 and covering it with the cover body 2 to form a box-cover assembly 3; S200: Wrapping the outer side of the box cover assembly 3 with a heat shrink film 4; S300: heat-pressing the heat shrinkable film 4 to make the heat shrinkable film 4 adhere to the surfaces of the box body 1 and the cover body 2.

[0031] In this way, the present invention relates to a foam packaging box packaging process, by pressing the film-coated box cover assembly 3, so that the heat shrink film 4 is bonded to the outer surface of the box body 1 and the cover body 2, forming a more compact whole. In this way, the strength of the overall foam packaging box is increased. In this way, compared with the traditional packaging box under the same strength level, the wall thickness can be thinner, saving the amount of material used. In addition, because the heat shrink film 4 is on the outside of the box cover assembly 3, the foam box can be effectively prevented from being damaged and falling off.

[0032] Preferably, as a first embodiment of the present invention, in step S300, a heating plate is used to press the heat shrink film 4. In step S300, the box cover assembly 3 after the film coating in step S200 is conveyed on a conveying device, the heating plate is arranged above and on both sides of the conveyor belt, and the heat pressing plate 5 is installed on a spatial driving mechanism 7, and the spatial driving mechanism 7 drives the heat pressing plate 5 to contact or separate from the heat shrink film 4.

[0033] The hot pressing plate 5 is suitable for a foam box with a flat outer surface, such as a rectangular packaging box. The hot pressing plate 5 has a heating device, and when the hot pressing plate 5 is pressed against the heat shrink film 4, the surface of the foam box is slightly melted and bonded to the heat shrink film 4.

[0034] like Figure 1 As shown, Figure 1 As shown, the hot pressing plate 5 is arranged above the conveyor belt 8. The hot pressing plate 5 is also arranged on both sides of the conveyor belt 8. For the hot pressing of the two sides along the conveying direction and the front and rear directions, the hot pressing plate 5 can be driven by a space driving mechanism 7 that can be lifted and moved forward and backward. It can also be achieved by rotating the box cover assembly 3 90 degrees and then passing through the hot pressing plate 5 on both sides of the conveyor belt.

[0035] Preferably, as the second embodiment of the present invention, Figure 2 As shown, in step S300, the heat shrink film 4 is pressed by using a heat pressing roller 6. The heat pressing roller 6 rolls on the outer surface of the box cover assembly 3 after the film is coated, so that the heat shrink film 4 is bonded to the box cover assembly 3. Furthermore, in step S300, the box cover assembly 3 after the film is coated in step S200 is transported on the conveying device, and the heat pressing roller 6 is arranged above and on both sides of the conveyor belt.

[0036] During the conveying process of the box cover assembly 3 after lamination by the conveying device (such as a conveyor belt), the hot pressing of S300 is performed on the conveyor belt. After the hot pressing is completed, the box cover assembly 3 continues to be conveyed, thus achieving continuous production with high production efficiency. For the bonding method of the hot pressing plate 5, during the hot pressing process, the foam packaging box needs to stop conveying, and then convey it after the hot pressing is completed. For the hot pressing method of the hot pressing roller 6, during the hot pressing process, the foam packaging box can remain in a moving state, and the hot pressing roller 6 remains stationary, thus achieving lamination. If the hot pressing roller 6 is installed on the space driving mechanism 7, the space driving mechanism 7 drives the hot pressing roller 6 to contact or separate from the heat shrink film 4.

[0037] Similarly, the hot pressing rollers 6 are arranged above and on both sides of the conveyor belt 8. For the hot pressing of the two sides along the conveying direction and the front and rear directions, the hot pressing rollers 6 can be driven by a space driving mechanism 7 that can be lifted and moved forward and backward. It can also be achieved by rotating the box cover assembly 3 90 degrees and then passing through the hot pressing rollers 6 on both sides of the conveyor belt 8.

[0038] Furthermore, the hot pressing roller 6 and the hot pressing plate 5 are installed on a numerically controlled mechanical arm, and the hot pressing roller 6 and the hot pressing plate 5 can be pressed in a follow-up manner according to the conveying speed of the conveying device.

[0039] Preferably, the surfaces of the box body 1 and the cover body 2 are provided with protruding marks 31, which are formed when the material is squeezed into the exhaust holes of the mold during the foaming process of the box body 1 and the cover body 2; in step S300, the marks 31 are fully bonded to the heat shrink film 4.

[0040] Preferably, if Figure 6 As shown, the imprint 31 includes a plurality of parallel dot-broken-line-shaped monomers, and two adjacent monomers are staggered.

[0041] Preferably, as another embodiment of the imprint 31, Figure 7 As shown, the impression 31 includes a plurality of monomers, which are densely laid on the surface of the box body 1 and the cover body 2; each monomer is provided with a plurality of small impressions 31 in a folded line. The monomers in the shape of dotted lines or hexagonal monomers are all bonded to the heat shrink film 4 through a plurality of small impressions 31, so that the impression 31 produced during the production of the foam material is used. Since the impression 31 protrudes from the surface of the cover body 2 and the box body 1, the impression 31 is first bonded to the heat shrink film 4 to form a multi-point bonding structure. If the hot pressing time is longer, the surface of the cover body 2 and the box cover can be bonded as a whole.

[0042] Compared with the prior art, the present invention further heat-presses the box cover assembly 3 coated with the heat shrink film 4 so that the heat shrink film 4 is bonded to the cover body 2 and the box cover, thereby forming a tighter whole, ensuring structural strength while reducing the use of foam materials.

[0043] The above embodiments and drawings do not limit the product form and style of the present invention. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present invention.

Claims

1. A foam packaging box packaging process, characterized in that: The following steps are involved: S100: placing the product into the box and covering it with a cover to form a box-cover assembly; S200: Covering the outer side of the box cover assembly with a heat shrink film; S300: The heat shrinkable film is heat-pressed to make the heat shrinkable film adhere to the surface of the box body and the cover body.

2. A foam packaging box packaging process as claimed in claim 1, characterized in that: In step S300, the heat shrinkable film is pressed using a heating plate.

3. A foam packaging box packaging process as claimed in claim 2, characterized in that: In step S300, the box cover assembly after the coating in step S200 is transported on the conveying device, the heating plate is arranged above and on both sides of the conveyor belt, and the heat pressing plate is installed on the space driving mechanism, and the space driving mechanism drives the heat pressing plate to contact or separate from the heat shrink film.

4. A foam packaging box packaging process as claimed in claim 1, characterized in that: In step S300, the heat shrink film is pressed using a heat pressing roller.

5. A foam packaging box packaging process as claimed in claim 4, characterized in that: In step S300, the box cover assembly after the film coating in step S200 is transported on a conveying device, and the hot pressing rollers are arranged above and on both sides of the conveyor belt.

6. A foam packaging box packaging process as claimed in claim 5, characterized in that: The heat-pressing roller is installed on a spatial driving mechanism, and the spatial driving mechanism drives the heat-pressing roller to contact or separate from the heat shrinkable film.

7. A foam packaging box packaging process as claimed in any one of claims 1 to 6, characterized in that: The surfaces of the box body and the cover body are provided with protruding marks, which are formed when the material is squeezed into the exhaust holes of the mold during the foaming process of the box body and the cover body; in step S300, the marks are fully bonded to the heat shrink film.

8. A foam packaging box packaging process as claimed in claim 7, characterized in that: The imprint comprises a plurality of parallel dot-broken-line-shaped monomers, and two adjacent monomers are staggered.

9. A foam packaging box packaging process as claimed in claim 7, characterized in that: The imprint comprises a plurality of monomers, and the monomers are densely spread on the surface of the box body and the cover body; and a plurality of small imprints in folded lines are arranged in each monomer.

10. A foam packaging box packaging process as claimed in claim 1, characterized in that: The box cover assembly is in a rectangular parallelepiped shape.

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