Production process of foam packaging box convenient to lift

Abstract

The invention discloses a production process of a foam packaging box convenient to lift, which comprises the following steps: S100, preparing a box body and a cover body, preparing a thermal shrinkage film and mounting the thermal shrinkage film on a packaging machine; s200, articles to be packaged are placed in the box body, and the box body is covered with the cover body to form a box cover combination body; s300, thickened edges or wrinkled edges are formed on the two sides of the thermal shrinkage film in the width direction; the box cover assembly is conveyed on a packaging conveying line, the heat shrinkage film is driven by a packaging machine to be wound to the upper face, the lower face, the front face and the rear face of the box cover assembly, and a packaged semi-finished product is formed; and S400, the package semi-finished product is conveyed to a heating shrinkage area through the package conveying line, the heat shrinkage film shrinks to the surface of the box cover combination body, openings are formed in the positions, on the opposite left and right side faces of the box cover combination body, of the heat shrinkage film, and the thickened edges or the wrinkled edges are located on the edges of the openings. The thickened edges are arranged on the two sides of the heat shrinkage film, after wrapping is completed, the thickened edges of the edges of the openings formed in the two sides of the foam packaging box are used for being lifted by workers, and convenience is improved.

Description

Technical Field

[0001] The present invention relates to the field of packing boxes, and particularly to a production process of a foam packing box that is convenient to lift. Background Art

[0002] Foam packing boxes are often used to pack goods, such as vegetables. When workers carry foam boxes, they need to put their two hands on the left and right sides of the packing box respectively and lift it relying on friction, which is rather laborious. Moreover, foam packing boxes are easily scratched, causing foam particles to fly everywhere.

[0003] How to enable workers to lift foam packing boxes more easily is the key research direction of packing box 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 been generated. Summary of the Invention

[0005] The main purpose of the present invention is to provide a production process of a foam packing box that is convenient to lift, which has the characteristic of reducing the labor intensity of workers when lifting the foam packing box.

[0006] To achieve the above object, the solution of the present invention is as follows: A production process of a foam packing box that is convenient to lift, comprising the following steps: S100: Prepare a box body and a cover body, prepare a heat shrinkable film and install it on a packaging machine; S200: Place the items to be packed into the box body, and cover the cover body to form a box-cover combination; S300: There are thickened edges or wrinkled edges formed on both sides in the width direction of the heat shrinkable film; the box-cover combination is conveyed on a packaging conveyor line, and the heat shrinkable film is wound around the upper and lower surfaces and the front and back surfaces of the box-cover combination under the drive of the packaging machine to form a semi-finished package; S400: The packaging conveyor line conveys the semi-finished package to a heating and shrinking area, and the heat shrinkable film shrinks to the surface of the box-cover combination. The heat shrinkable film has openings formed on the opposite left and right side surfaces of the box-cover combination, and the thickened edges or wrinkled edges are located at the edges of the openings.

[0007] Further, the openings are completely located on the side parts of the box-cover combination, and the thickened edges form closed circles.

[0008] Further, in step S300, the thickened edges or wrinkled edges are integrally formed during the conveying process of the heat shrinkable film in the packaging machine; or, the heat shrinkable film is pre-formed with thickened edges or wrinkled edges during production.

[0009] Further, the thickened edges are formed by rolling both sides of the heat shrinkable film; the wrinkled edges are formed by concave-convex pressing on the edges of the heat shrinkable film.

[0010] Furthermore, the lid assembly is in the shape of a cuboid.

[0011] Furthermore, the heat shrinkable film is made of a transparent material.

[0012] Furthermore, the upper and lower surfaces and the front and rear surfaces of the lid assembly are bonded to the heat shrinkable film.

[0013] Furthermore, imprints formed by the material squeezing into the mold vent holes during the foam molding process are convexly provided on the surfaces of the box body and the lid; the heat shrinkable film is bonded to the imprints.

[0014] Furthermore, the imprints include multiple monomers in the shape of parallel dotted lines, and adjacent monomers are staggered.

[0015] Furthermore, the imprints include multiple monomers, and the monomers are closely paved on the surfaces of the box body and the lid; multiple zigzag small imprints are arranged in each monomer.

[0016] After adopting the above structure, the production process of a foam packing box that is convenient to lift according to the present invention has at least the following beneficial effects: 1. By forming thickened edges or wrinkled edges on both sides of the heat shrinkable film, after the heat shrinkable film is wrapped around the outer surface of the lid assembly and heated and shrunk, the heat shrinkable film forms openings with thickened edges at the opposite left and right sides of the lid assembly, and the thickened edges at the opening edges are used as handles. When workers carry the foam packing box, they can hold the thickened edges at one side opening with both hands to lift the foam packing box.

[0017] 2. The thickened edges are formed by rolling during the transportation of the heat shrinkable film in the packaging machine. In this way, the heat shrinkable film can be a commercially available ready-made heat shrinkable film, with a low cost. It is also possible to pre-form thickened edges or wrinkled edges during the production of the heat shrinkable film, and pack it in a roll for standby. When film covering is required, it is then wrapped around the outer surface of the lid assembly through the packaging machine.

[0018] 3. By bonding the heat shrinkable film to the outer surfaces of the lid body and the box body, the integrity and structural strength of the heat shrinkable film and the lid assembly are further improved. In this way, the wall thickness of the foam plastics of the lid body and the box body can be further reduced, and the usage amount of the foam material can be reduced.

[0019] 4. The heat shrinkable film is bonded to the imprints on the box body and the lid body, so that the heat shrinkable film is evenly connected to the box body and the lid body at multiple points. The protruding imprints slightly melt during the heat bonding process and are bonded to the heat shrinkable film.

[0020] Compared with the prior art, by providing thickened edges on both sides of the heat shrinkable film, after the heat shrinkable film and the box cover assembly are wrapped, the thickened edges at the opening edges formed on both sides of the foam packaging box are used for workers to lift, improving the convenience of handling. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. is a perspective structural view of the foam packaging box of the present invention.

[0022] Figure 2 FIG. is an exploded structural view of the foam packaging box.

[0023] Figure 3 FIG. is a perspective structural view of the foam packaging box from another angle.

[0024] Figure 4 FIG. is a planar structural view of the heat shrinkable film.

[0025] Figure 5 FIG. is a perspective structural view of the cover body.

[0026] Figure 6 FIG. is a structural view of a monomer provided with a plurality of zigzag small imprints.

[0027] Figure 7 FIG. is a schematic working principle diagram of the production process of the foam packaging box convenient for lifting.

[0028] Figure 8 FIG. is a structural view of the heat shrinkable film with a wrinkled edge (the box cover assembly is hidden).

[0029] In the figure: Box body 1; cover body 2; box cover assembly 10; semi-finished packaging 20; imprint 11; heat shrinkable film 3; wrinkled edge 30; thickened edge 31; opening 32; packaging conveyor line 4; packaging machine 5; heating shrinkage area 6. DETAILED DESCRIPTION OF THE INVENTION

[0030] In order to further explain the technical solution of the present invention, the present invention will be elaborated in detail below through specific embodiments.

[0031] As Figures 1 to 8 shown, it is a production process of a foam packaging box convenient for lifting according to the present invention, including the following steps: S100: Prepare the box body 1 and the cover body 2, prepare the heat shrinkable film 3 and install it on the packaging machine 5; S200: Place the items to be packaged, such as vegetables, into the box body 1, and cover the cover body 2 to form the box cover assembly 10; S300: On both sides in the width direction of the heat-shrinkable film 3, thickened edges 31 are formed; the lid assembly 10 is conveyed on the packaging conveyor line 4, and the heat-shrinkable film 3 is wound around the upper and lower surfaces and the front and rear surfaces of the lid assembly 10 under the drive of the packaging machine 5 to form a semi-finished packaging product 20; S400: The packaging conveyor line 4 conveys the semi-finished packaging product 20 to the heat-shrinkage area 6, and the heat-shrinkable film 3 shrinks to the surface of the lid assembly 10. The heat-shrinkable film 3 is provided with openings 32 on the opposite left and right side surfaces of the lid assembly 10, and the thickened edges 31 or the corrugated edges 30 are located at the edges of the openings 32.

[0032] In this way, for the production process of a foam packaging box that is convenient to lift according to the present invention, by forming thickened edges 31 or corrugated edges 30 on both sides of the heat-shrinkable film 3, after the heat-shrinkable film 3 is wrapped around the outer surface of the lid assembly 10 and undergoes heat shrinkage, the heat-shrinkable film 3 is provided with openings 32 with thickened edges 31 at the edges on the opposite left and right side surfaces of the lid assembly 10, and the thickened edges 31 at the edges of the openings 32 are used as handles. When workers carry the foam packaging box, they can hold the thickened edges 31 at one side opening 32 with both hands respectively to lift the foam packaging box. The corrugated edges 30 are formed in a wave shape at the opening, and the heat-shrinkable film here will not adhere to the box body, so that it is convenient for the user to hook the corrugated edges 30 to lift the foam packaging box.

[0033] Further, the openings 32 are completely located on the side parts of the lid assembly 10, and the thickened edges 31 form closed circles. Preferably, in step S300, the thickened edges 31 or the corrugated edges 30 are integrally formed during the conveyance of the heat-shrinkable film 3 in the packaging machine 5. The thickened edges 31 are formed by rolling during the conveyance of the heat-shrinkable film 3 in the packaging machine 5. In this way, the heat-shrinkable film 3 can be a commercially available ready-made heat-shrinkable film 3, with a lower cost. It is also possible to pre-form thickened edges 31 or corrugated edges 30 during the production of the heat-shrinkable film, and after being packaged in rolls for standby, when film covering is required, it is then wrapped around the outer surface of the lid assembly through the packaging machine.

[0034] Preferably, the lid assembly 10 is in the shape of a cuboid. Further, the heat-shrinkable film 3 is made of a transparent material. The upper and lower surfaces and the front and rear surfaces of the lid assembly 10 are all adhered to the heat-shrinkable film 3. By bonding the heat-shrinkable film 3 to the outer surfaces of the lid 2 and the box body 1, the integrity and structural strength of the heat-shrinkable film 3 and the lid assembly 10 are further improved. In this way, the wall thickness of the foam plastics of the lid 2 and the box body 1 can be further reduced, and the usage amount of the foam material can be reduced.

[0035] Preferably, imprints 11 formed by the material squeezing into the mold exhaust holes during the foam molding process are convexly provided on the surfaces of the box body 1 and the lid 2; the heat-shrinkable film 3 is adhered to the imprints 11.

[0036] Preferably, the imprint 11 includes a plurality of monomers in the shape of parallel dotted lines, and adjacent monomers are arranged staggeredly. Alternatively preferably, the imprint 11 includes a plurality of monomers, and the monomers are densely paved on the surfaces of the box body 1 and the cover body 2; a plurality of zigzag small imprints 11 are arranged in each monomer. The heat shrinkable film 3 is bonded to the imprints 11 on the box body 1 and the cover body 2, so that the heat shrinkable film 3 is uniformly connected to the box body 1 and the cover body 2 at multiple points. The protruding imprints 11 slightly melt during the heat bonding process and are bonded to the heat shrinkable film.

[0037] Compared with the prior art, in the present invention, by providing thickened edges 31 or corrugated edges 30 on both sides of the heat shrinkable film 3, after the heat shrinkable film 3 and the box cover assembly 10 are wrapped, the thickened edges 31 or corrugated edges 30 at the edges of the openings 32 formed on both sides of the foam packaging box are used for workers to lift, improving the convenience of handling.

[0038] The above embodiments and drawings 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 art shall be regarded as not departing from the patent scope of the present invention.

Claims

1. A production process for a foam packaging box that is easy to lift, characterized in that: The following steps are involved: S100: Prepare the box body and cover body, prepare the heat shrink film and install it on the packaging machine; S200: placing items to be packaged into the box body, and covering the box body with a cover to form a box-cover assembly; S300: Thickened edges or wrinkled edges are formed on both sides of the heat shrink film in the width direction; the box cover assembly is conveyed on the packaging conveyor line, and the heat shrink film is wound around the upper and lower surfaces and the front and back surfaces of the box cover assembly under the driving of the packaging machine to form a semi-finished packaging product; S400: The packaging conveyor line conveys the semi-finished packaging to the heating shrinkage zone, and the heat shrink film shrinks to the surface of the box cover assembly. The heat shrink film forms openings on the opposite left and right sides of the box cover assembly, and the thickened edge or the wrinkled edge is located at the edge of the opening.

2. The production process of a foam packaging box that is easy to lift as claimed in claim 1, characterized in that: The opening is completely located at the side of the box cover assembly, and the thickened edge forms a closed circle.

3. The production process of a foam packaging box that is easy to lift as claimed in claim 1, characterized in that: In step S300, the heat shrinkable film is integrally formed with the thickened edge or the wrinkled edge during transportation in the packaging machine; or, the heat shrinkable film is pre-formed with the thickened edge or the wrinkled edge during production.

4. The production process of a foam packaging box that is easy to lift as claimed in claim 3, characterized in that: The thickened edge is formed by rolling the two sides of the heat shrink film; the wrinkled edge is formed by pressing the concave and convex edges of the heat shrink film.

5. The production process of a foam packaging box that is easy to lift as claimed in claim 1, characterized in that: The box cover assembly is in the shape of a cuboid.

6. The production process of a foam packaging box that is easy to lift as claimed in claim 1, characterized in that: The heat shrinkable film is made of transparent material.

7. The production process of a foam packaging box that is easy to lift as claimed in claim 1, characterized in that: The upper and lower surfaces and the front and rear surfaces of the box cover assembly are bonded with the heat shrink film.

8. The production process of a foam packaging box that is easy to lift as claimed in claim 7, characterized in that: The surfaces of the box body and the cover body are convexly provided with marks formed by the material squeezing into the exhaust holes of the mold during the foaming molding process; and the heat shrinkable film is bonded to the marks.

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

10. The production process of a foam packaging box that is easy to lift as claimed in claim 9, 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 folded line imprints are arranged in each monomer.

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