KR101486365B1 - Apparatus and method of manufacturing Plastic corrugated carboard - Google Patents

Abstract

An apparatus for manufacturing a corrugated plastic of the present invention has a film roller, a corrugated plastic molder and a main roller. The film roller is rotatable and winds a coating film having a printed pattern on one side thereon. The corrugated plastic molder processes a corrugated panel made of a plastic material with extrusion molding using heat. The main roller is rotatable and installed to be adjacent to the corrugated plastic molder and guides to contact the coating film discharged from the film roller on one surface of the corrugated panel discharged from the corrugated plastic molder so that the other side of the coating film is heat-welded to the corrugated panel by using the residue heat of the corrugated panel due to extrusion molding. Accordingly, the apparatus for manufacturing a corrugated plastic can heat-weld the coating film without a separate heating element, thereby reducing the manufacturing costs and enhancing the quality.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an apparatus for manufacturing a plastic corrugated cardboard,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for manufacturing a plastic corrugated cardboard, and more particularly, to an apparatus and method for manufacturing a plastic corrugated cardboard for manufacturing a plastic corrugated cardboard used for a box or the like.

The plastic corrugated board is made in a plate shape, and a plurality of holes are formed therein, and is made of a plastic material having good water resistance.

Such a plastic corrugated cardboard is easy to move because it is light in weight compared with wood, and has good water resistance, and is used for various purposes such as various storage boxes such as a garment box and a moving box.

Paper corrugated paper, which is still widely used in product packaging, is light and easy to manufacture, and is made of paper material, so it is easy to print a print pattern such as advertisement, product name, or picture on the surface. However, since paper corrugated paper is made of paper having poor water resistance, there is a disadvantage that it is difficult to carry a product having moisture on its surface or a product when it is raining.

On the other hand, plastic corrugated cardboard has good water resistance and is stronger than paper corrugated cardboard, and it is easy to carry goods that have moisture on the surface or rainy weather. However, since such a plastic corrugated cardboard is manufactured through a process of extrusion molding at a high temperature, it is difficult to directly print the print pattern on the surface of the plastic corrugated cardboard in the course of its manufacture.

In addition to printing the print pattern directly on the surface of the plastic corrugated board, there is a method of attaching a separate film printed with the print pattern to the plastic corrugated board. However, since the plastic corrugated cardboard manufacturing process is performed at a very high temperature, the heat-resistant film is easily melted or deformed during the adhering process, making it difficult to adhere the film in the course of manufacturing plastic corrugated cardboard. Therefore, it is troublesome to perform a separate process of attaching the film having the print pattern after the completion of the manufacture of the plastic corrugated cardboard.

Korean Registration Practical No. 20-0416262 (2006.05.08) "Plastic backing sheet for box making" Korean Patent Laid-Open No. 10-2008-0049889 (2008.06.05) "Method of manufacturing plastic corrugated cardboard"

An object of the present invention is to provide a plastic corrugated cardboard manufacturing apparatus capable of producing plastic corrugated cardboard of excellent print quality.

It is also an object of the present invention to provide a method of manufacturing a plastic corrugated cardboard that can simplify the process.

According to one aspect of the present invention, there is provided an apparatus for manufacturing a plastic corrugated cardboard, the apparatus comprising: a film roller rotatable and wound with a coating film having a print pattern formed on one surface thereof; A corrugator molding machine for processing corrugated panel made of plastic material through extrusion using heat; The corrugated cardboard panel according to any one of claims 1 to 3, wherein the corrugated cardboard panel comprises a corrugated cardboard panel, And a main roller guiding and contacting the coating film drawn out from the film rollers on one surface.

The main roller may be provided with cooling water from the outside to maintain the proper temperature to prevent deformation of the coating film wound on the main roller due to the temperature rise of the main roller caused by radiant heat of the corrugated cardboard molding machine.

An upper vacuum molding machine installed adjacent to the main roller on one side of the main roller and vacuum-absorbing one side of the corrugated panel having the coating film attached thereto to form the corrugated panel; And a corrugated panel panel disposed adjacent to the corrugated cardboard molding machine and spaced apart from the upper vacuum molding machine and vacuum-absorbing and cooling the other face of the corrugated cardboard panel, And may further include a lower vacuum molding machine for shaping and curing. Here, the lower vacuum molding machine may include: a body on which the corrugated panel is placed and vacuum-absorbing the corrugated panel; And a cooling line installed inside the body, through which cooling water flows.

The apparatus may further include a connection line connecting an input end to the output end of the cooling line and an output end connected to the main roller to provide cooling water introduced from the cooling line to the main roller.

Further, the distance between the corrugated cardboard molding machine and the upper vacuum molding machine is 100 mm to 130 mm.

The corrugator molding machine may further comprise: a panel manufacturing section for manufacturing a plastic panel using a plastic raw material; And a tie die part which is installed between the panel manufacturing part and the lower vacuum molding machine and which extrudes the plastic panel drawn from the panel manufacturing part to produce the corrugated panel panel.

The apparatus further includes a power brake connected to the film rollers for forcibly stopping the rotation of the film rollers to adjust the tension of the coating film located on the path from the film rollers to the main rollers .

In addition, the apparatus for manufacturing a plastic corrugated cardboard is provided with a rotatable coating film drawn out from the film rollers on a path provided to the main rollers, and at least one The above-described sub-rollers.

Here, the coating film wound on the film roller includes a printing film on which the printing pattern is printed on one side, and the fusion film laminated on the other side of the printing film, wherein either the fusion film or the printing film is stretched Film, and the other one may be a lead-free film.

According to another aspect of the present invention, there is provided a method of manufacturing a plastic corrugated cardboard, comprising the steps of: providing a main roller with a coating film on which a printing pattern is formed on a surface wound on a film roller; Processing a corrugated panel made of a plastic material by extrusion molding using a corrugated cardboard molding machine; And rotating the film roller and the main roller in a state in which the other surface of the coating film wound on the main roller is in contact with one side of the corrugated cardboard panel drawn out from the corrugated cardboard molding machine, And thermally fusing the coating film to the corrugated panel panel using the coating film.

The step of thermally fusing the coating film may include supplying cooling water to the main roller to prevent the coating film wound on the main roller from being deformed due to a rise in the temperature of the main roller due to the radiant heat of the corrugator molding machine, While maintaining the temperature of the roller at an appropriate temperature.

Further, in the method of manufacturing a plastic corrugated cardboard, after the step of thermally fusing the coating film, a corrugated cardboard panel having the coating film is placed on one side of the corrugated cardboard molding machine and drawn between an upper vacuum molding machine and a lower vacuum molding machine, The method may further include shaping and curing the corrugated panel.

In addition, in the step of shaping and curing the corrugated panel, the corrugated panel is shaped by the upper and lower vacuum molding machines through vacuum suction of the corrugated cardboard panel to which the coating film is adhered, and the cooling water supplied to the lower vacuum molding machine And is then cooled and cured.

Also, the cooling water discharged from the lower vacuum molding machine may be supplied to the main roller to maintain the temperature of the main roller at an appropriate temperature.

The step of fabricating the corrugated panel may include the steps of: fabricating a plastic panel using the plastic raw material; And a step of extruding the plastic panel drawn from the panel manufacturing portion of the corrugated cardboard molding machine to manufacture the corrugated cardboard panel. Here, at the time of corrugated panel processing, the temperature of the Ti-die portion may be maintained at 190 to 200 ° C.

Further, in the step of thermally fusing the coating film, the rotation of the film rollers is intermittently forcibly stopped and released by driving the power brake to adjust the tensile force of the coating film located on the path from the film rollers to the main rollers .

On the other hand, the coating film wound on the film rollers is provided with a print film on which the print pattern is printed on one surface and a fusion film laminated on the other surface of the print film, and any one of the fusion film and the print film is stretched A film may be provided, and the other may be provided with a lead-free film.

According to the apparatus and method for manufacturing a plastic corrugated cardboard according to an embodiment of the present invention,

First, since the main roller is provided adjacent to the corrugator molding machine, the coating film can be thermally fused by the residual heat of the corrugated cardboard panel and the main roller without the need of a separate heating member, thereby reducing the manufacturing cost of the plastic corrugated cardboard and improving the quality .

Secondly, by controlling the temperature of the main roller, the deformation of the coating film wound on the main roller is prevented, so that the yield of the product can be improved.

Third, by providing the upper and lower vacuum molding machines adjacent to the main rollers, the corrugated board panel with the coating film is immediately formed and cooled and cured, thereby improving the product yield.

Fourth, since the proper temperature of the main roller can be maintained by providing the cooling water discharged from the lower vacuum molding machine, the cooling water can be reused and the manufacturing cost can be reduced.

Fifth, by arranging the corrugated cardboard forming machine, the upper and lower vacuum forming machines, and the main roller adjacent to each other, the manufacture of the plastic corrugated cardboard can be efficiently performed.

Sixth, the pulling and pulling of the coating film located on the path from the film roller to the main roller can be controlled by using the power brake, so that the occurrence of defects in the heat welding process can be prevented.

Seventh, since a coating film in which a stretched film and a non-stretched film are laminated is used, deformation of the coating film can be prevented in the heat-sealing process.

Eighth, by using the residual heat of the corrugated cardboard panel generated during the process of corrugated panel, the coating film is heat-sealed without a separate heating device, so that the process of printing the printing pattern on the plastic corrugated cardboard can be simplified and the process time can be shortened have.

1 is a view showing an apparatus for manufacturing a plastic corrugated cardboard according to an embodiment of the present invention.
FIG. 2 is a perspective view showing a plastic corrugated board manufactured by the apparatus for manufacturing a plastic corrugated board shown in FIG. 1. FIG.
3 is a cross-sectional view taken along the line I-I 'in Fig.
FIG. 4 is a view showing the arrangement relationship between the upper and lower vacuum molding machines shown in FIG. 1, the main roller and the T-die part.
5 is a flowchart illustrating a method of manufacturing a plastic corrugated cardboard according to an embodiment of the present invention.
FIG. 6 is a process diagram showing a process of manufacturing a plastic corrugated cardboard by the apparatus for manufacturing a plastic corrugated board shown in FIG. 1;
FIG. 7 is a process chart showing a process of thermally fusing the coating film shown in FIG. 6 to the corrugated cardboard panel.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that, in the drawings, the same components are denoted by the same reference symbols as possible. Further, the detailed description of known functions and configurations that may obscure the gist of the present invention will be omitted. For the same reason, some of the components in the drawings are exaggerated, omitted, or schematically illustrated.

2 is a perspective view showing a plastic corrugated cardboard manufactured by the apparatus for manufacturing a plastic corrugated board shown in FIG. 1, and FIG. 3 is a perspective view of the corrugated cardboard of FIG. I-I '.

1 and 2, an apparatus 100 for manufacturing a plastic corrugated cardboard 200 according to the present invention is an apparatus for manufacturing a plastic corrugated cardboard 200, and is a device for manufacturing a plastic corrugated cardboard 200 printed with a printing pattern 222a.

First, before describing the construction of the plastic corrugated cardboard manufacturing apparatus 100, the structure of the plastic corrugated cardboard 200 manufactured by the plastic corrugated cardboard manufacturing apparatus 100 of the present invention will be described with reference to the drawings.

2 and 3, the plastic corrugated cardboard 200 includes a corrugated panel 210 and a coating film 220.

Specifically, the corrugated panel 210 is made of a plastic material and has a plate shape. The corrugated panel 210 is formed with a plurality of holes 211 having a square cross-section as shown in FIG. The plurality of holes 211 serve as a buffer for absorbing an external shock.

A coating film 220 is attached to one side of the corrugated panel 210 and the coating film 220 includes a fusing film 221 and a printing film 222. More specifically, the fused film 210 is thermally welded to one side of the corrugated cardboard panel 210 and is interposed between the corrugated cardboard panel 210 and the print film 222. The print film 222 has a print pattern 222a printed thereon and the print pattern 222a is a pattern in which texts or pictures or texts and pictures are mixed to advertise products or companies or decorate the appearance of a plastic corrugated cardboard . On the other hand, the other surface of the print film 222 is bonded to the other surface of the fusing film 221. 3, the plastic corrugated cardboard 200 is arranged in the order of the corrugated cardboard panel 210, the fusing film 221, and the print film 222. As shown in FIG.

Here, the fusing film 221 and the print film 222 are made of different materials. Specifically, one of the fusing film 221 and the print film 222 is made of a stretched film, and the other is made of a non-stretched film. Here, the stretched film may be provided with an oriented polypropylene (OPP) film, and the non-stretched film may be provided with a casting polypropylene (CPP) film. In particular, the fusing film 221 may be a CPP film, and the print film 222 may be an OPP film.

Hereinafter, the construction of a plastic corrugated board manufacturing apparatus 100 for manufacturing the plastic corrugated cardboard 200 described above with reference to the drawings will be described in detail.

1 and 2, the apparatus 100 for manufacturing a plastic corrugated board of the present invention includes a film roller 110, a corrugator 120, and a main roller 130, The coating film 220 is thermally fused to the corrugated cardboard panel 210 during the manufacturing process.

Specifically, the film roller 110 is rotatable, has a circular columnar shape, and is provided with a coating film 220 wound around the corrugated panel 210. The coating film 220 wound around the film roller 110 is pulled out from the film roller 110 by the rotation of the film roller 110 when the plastic corrugated cardboard 200 is manufactured.

The corrugator molding machine 120 processes the corrugated panel panel 210 through extrusion using heat. More specifically, the corrugator molding machine 120 may include a panel manufacturing section 121 and a T-die part 122. The panel manufacturing section 121 receives the plastic raw material for manufacturing the corrugated panel 210, and uses the heat to manufacture the plate-shaped plastic panel 10. The tie die portion 122 is provided adjacent to the panel manufacturing portion 121 on one side of the panel manufacturing portion 121 and is formed by molding the plastic panel 10 drawn out from the panel manufacturing portion 121 through a high temperature extrusion die A corrugated panel 210 is manufactured. That is, the plastic panel 10 processed from the panel manufacturing section 121 is not formed with a plurality of holes 211 therein. The tie die 122 receives the plastic panel 10 from the panel manufacturing section 121 and forms a plurality of holes 211 in the plastic panel 10 to complete the corrugated panel 210 .

A main roller 130 is installed at one side of the tee die 122. The main roller 130 is rotatable and has a columnar shape. The main roller 130 is partially wound with the coating film 220 drawn from the film roller 110. The main roller 130 guides the rolled coating film 220 toward the corrugated cardboard panel 210 drawn from the tie die 122 to bring the coating film 220 into contact with the one surface of the corrugated panel 210, The coating film 220 is thermally fused to one surface of the corrugated panel 210.

Here, the main roller 130 does not have a separate heating member for thermally fusing the coating film 220, and the heat required to heat-seal the coating film 220 utilizes residual heat remaining in the corrugated panel 210 .

The apparatus 100 for manufacturing a plastic corrugated cardboard according to the present invention does not have a separate heating member but thermally fuses the coating film 220 to the corrugated panel 210 using the residual heat of the corrugated panel 210. For this purpose, ) Adjacent to the corrugator molding machine (120). That is, when the temperature of the corrugated panel 210 is lowered as time elapses after being drawn out from the corrugated cardboard molding machine 120, if the temperature of the corrugated cardboard panel 110 becomes too low, heat for heat-sealing the coating film 220 is secured Can not. The main roller 130 is installed adjacent to the corrugator molding machine 120 so that the corrugated panel panel 210 is directly heated to the portion of the corrugated cardboard molding machine 120 where the coating film 220 is heat- .

Since the apparatus 100 for manufacturing a plastic corrugated cardboard according to the present invention thermally fuses the coating film 220 without providing a separate heating member for thermally fusing the coating film 220, And the process for printing the print pattern 222a on the plastic corrugated cardboard 200 can be simplified.

Meanwhile, the plastic corrugated cardboard manufacturing apparatus 100 may further include upper and lower vacuum forming machines 140 and 150. The upper and lower vacuum forming machines 140 and 150 are installed facing the tie die portion 122 with the main roller 130 interposed therebetween.

FIG. 4 is a view showing the arrangement relationship between the upper and lower vacuum molding machines shown in FIG. 1, the main roller and the T-die part.

1, 2, and 4, the upper vacuum molding machine 140 is installed on one side of the main roller 130. The lower vacuum molding machine 150 is installed to face the upper vacuum molding machine 140 under the upper vacuum molding machine 150 and is installed apart from the upper vacuum molding machine 140. The upper and lower vacuum forming machines 140 and 150 vacuum adsorb the corrugated panel panel 210 between the upper vacuum forming machine 140 and the lower vacuum forming machine 150 by attaching the coating film 220 to the corrugated panel 210 ).

In other words, since the corrugated panel 210 introduced into the gap between the upper and the vacuum forming machines 140 and 150 has not yet gone through a high-temperature extrusion molding process by the corrugated cardboard molding machine 110, the coating film 220 can be thermally fused It is easily deformed due to high temperature. In addition, since the corrugated panel 210 has a plurality of holes 211, if the corrugated cardboard panel 210 drawn out from the corrugated cardboard molding machine 122 is not cured quickly, the corrugated panel 210 tends to be deformed due to a depression.

The upper and lower vacuum molding machines 140 and 150 are provided adjacent to the main roller 130 and the corrugated panel 210 having the coating film 220 attached thereto by the main roller 130 is vacuum- Thereby correcting the shape of the corrugated panel 210. In addition, the lower vacuum forming machine 150 cools and hardens the corrugated cardboard panel 210 so that the corrugated panel panel 210 maintains a regular shape. To this end, the lower vacuum molding machine 150 has a cooling line 152 through which cooling water flows from the outside. The cooling line 152 is installed inside the body 151 of the lower vacuum molding machine 150 on which the corrugated panel 210 is placed and the corrugated panel 210 drawn between the upper and lower vacuum molding machines 140 and 150 is cooled The temperature is lowered by the cooling water flowing through the line 152 and hardened.

As described above, the process of thermally fusing the coating film 220 and the process of shaping and hardening the corrugated panel 210 are closely related to the temperature of the corrugated panel 210, and the temperature change between the two processes is large. Therefore, the arrangement structure between the corrugator molding machine 110, the main roller 120 and the upper and lower vacuum molding machines 140 and 150, and the spacing distance therebetween are important. 4, the tie die 122, the main roller 130 and the upper and lower vacuum molding machines 140 and 150 are disposed adjacent to each other, and the upper and lower vacuum molding machines 140 and 150 ) And the tee die portion 122 is about 100 mm to about 130 mm. In one example of the present invention, the distance D between the upper and lower vacuum molding machines 140 and 150 and the tie die 122 is preferably about 120 mm.

Since the corrugated cardboard forming machine 110, the main roller 120 and the upper and lower vacuum forming machines 140 and 150 are disposed adjacent to each other, the radiant heat generated from the corrugated cardboard forming machine 110 can lower the temperature of the main roller 120 Can rise. When the temperature of the main roller 120 rises, defects may occur in which the coating film 220 wound on the main roller 120 is deformed due to heat generated from the main roller 120. In order to prevent this, the main roller 120 receives cooling water from the outside and maintains the proper temperature.

The cooling water supplied to the main roller 120 may be supplied from the lower vacuum molding machine 150 and the plastic corrugator 100 may be connected to the connection line connecting the lower vacuum molding machine 150 and the main roller 120 160). The input terminal of the connection line 160 is connected to the output terminal of the cooling line 152 provided in the lower vacuum molding machine 150. The output end of the connection line 160 is connected to the main roller 130 to supply the main roller 130 with cooling water discharged to the cooling line 152.

As described above, the plastic corrugated cardboard manufacturing apparatus 100 can reuse the cooling water discharged from the lower vacuum molding machine 150 to prevent the temperature of the main roller 120 from rising, thereby reducing the manufacturing cost and improving the product yield .

The apparatus 100 for manufacturing a plastic corrugated cardboard further includes a power brake 170 for adjusting the degree of sagging and pulling of the coating film 220 located on the path leading from the film roller 110 to the main roller 130 can do.

Specifically, when the coating film on the path is excessively stretched, the coating film 220 welded to the corrugated cardboard panel 210 may be cried. Conversely, when the coating film 220 on the path is pulled too much, the coating film 220 on the path may be broken or deformed. To prevent this, the power brake 170 is connected to the film roller 110 and momentarily forcibly stops rotation of the film roller 110 and releases it. Accordingly, the tension applied to the coating film located on the path is controlled, and as a result, the degree of sagging and pulling of the coating film 220 located in the path is controlled.

In addition, the plastic corrugated cardboard manufacturing apparatus 100 may further include a plurality of sub-rollers 180. Each of the sub rollers 180 is installed on the path where the coating film 220 is drawn out from the film rollers 110 and leading to the main rollers 130 and the coating film 220 drawn out from the film rollers 110, To the roller 130 side. In an example of the present invention, the apparatus 100 for manufacturing plastic corrugated cardboard has a plurality of sub-rollers 180, but may also include one sub-roller 180.

Hereinafter, a process for manufacturing the plastic corrugated cardboard 200 printed with the print pattern 222a will be described in detail with reference to the drawings.

FIG. 5 is a flowchart illustrating a method for manufacturing a plastic corrugated cardboard according to an embodiment of the present invention, and FIG. 6 is a process diagram illustrating a process for manufacturing a plastic corrugated cardboard using the apparatus for manufacturing a plastic corrugated cardboard shown in FIG.

5 and 6, a coating film 220 wound on a film roller 110 is drawn out from the film roller 110 and provided to the main roller 120 (step S110). At this time, the coating film 220 is drawn out from the film rollers 110 and then wound on the main roller 130 via a plurality of sub-rollers 180.

Meanwhile, the corrugator molding machine 120 processes corrugated panel 210 through extrusion using heat (step S120). Specifically, when the plastic raw material is provided to the panel manufacturing portion 121, the panel manufacturing portion 121 processes the plastic panel 10 using heat. The tie die 122 receives the plastic panel 10 from the panel manufacturing section 121 and forms a plurality of holes 211 (see Fig. 2) in the plastic panel 10 through extrusion using heat , Whereby the corrugated panel 210 is formed. At this time, the temperature of the Ti die 122 is maintained at about 190 캜 to about 200 캜.

Next, the main roller 130 contacts the coating film 220 wound on the main roller 130 on one side of the corrugated cardboard panel 210 taken out from the tie die 122, so as to cover the coating film 220 with the corrugated panel 210 (Step S130).

Hereinafter, the heat-sealing process of the coating film 220 and the process of shaping and hardening the corrugated cardboard panel will be described in detail with reference to the drawings.

FIG. 7 is a process chart showing a process of thermally fusing the coating film shown in FIG. 6 to the corrugated cardboard panel.

5, 6 and 7, the coating film 220 wound on the main roller 130 is brought into contact with the corrugated cardboard panel 210 from the corrugated cardboard molding machine 120. The corrugated panel 210 is moved between the upper and lower vacuum molding machines 140 and 150 while the main film 130 is in contact with the corrugated panel 210 Rotate. That is, the thermal fusion process of the coating film 220 is performed while the corrugated cardboard panel 210 is drawn out from the tie die 122 and moving toward the upper and lower vacuum molding machines 140 and 150. In one example of the present invention, the main roller 130 rotates clockwise, and the film roller 110 rotates counterclockwise.

The coating film 220 which is in contact with the corrugated panel 210 is thermally fused using the residual heat of the corrugated panel 210 generated in the extrusion molding process. The coating film 220 wound around the main roller 130 is disposed such that the print film 222 contacts the main roller 130 and the fusing film 221 is exposed to the outside. The fused film 221 is directly contacted with the corrugated panel 210 and the fused film 221 is thermally fused to one side of the corrugated panel 210. As a result,

The step S130 for heat-sealing the coating film 220 is not performed after the corrugated panel 210 is completely drawn out from the tie die 122, but the current corrugated panel 210 The coating film 120 may be thermally fused to the drawn-out portion of the corrugated cardboard panel 210 while being drawn out from the tee die portion 122.

As described above, in the method of manufacturing the plastic corrugated panel 200 of the present invention, the extrusion molding process of the corrugated panel 210 and the thermal welding process of the coating film 220 are continuously performed, 210 may be used to heat-seal the coating film 220 to the corrugated panel 210. Particularly, the print film 220, which is in direct contact with the corrugated cardboard panel 210 and has only the print pattern 222a (see FIG. 2), does not contact the corrugated cardboard panel 210 at the time of heat fusion. Accordingly, since the heat is not directly applied to the print film 220, the plastic corrugated panel 200 having high printing quality can be provided.

Meanwhile, the power brake 170 intermittently forcibly stops the rotation of the film roller 110 while the coating film 220 is being subjected to the thermal fusion process so that the coating on the path from the film roller 110 to the main roller 130 Thereby adjusting the tensile force of the film 210.

The upper and lower vacuum molding machines 140 and 150 shape and harden the corrugated panel 210 on which the coating film 220 is thermally fused to complete the plastic corrugated cardboard 200 (Step S140).

Specifically, the corrugated panel 210 is moved between the upper and lower vacuum molding machines 140 and 150 where the heat-sealed portion of the coating film 220 is installed on one side of the main film 130. The upper vacuum molding machine 140 is in contact with the printing film 222 of the coating film 220 attached to the corrugated panel 210 and the lower vacuum molding machine 150 is in contact with the corrugated panel 210, . The upper vacuum molding machine 140 and the lower vacuum molding machine 150 shape the corrugated cardboard panel 210 by vacuum suction. At this time, the vacuum suction direction VD1 of the upper vacuum molding machine 140 and the vacuum of the lower vacuum molding machine 150 The adsorption directions VD2 are opposite to each other.

The lower vacuum molding machine 150 shapes and cools the corrugated panel 210 at a high temperature while cooling the corrugated panel 210. The cooling of the corrugated panel 210 is performed by cooling lines 152 installed inside the lower vacuum molding machine 150, . The cooling water discharged from the cooling line 152 is supplied to the main roller 130 through the connection line 160 so that the main roller 130 can be properly titled Temperature. Thus, the temperature of the main roller 130 is raised by the radiant heat of the Ti-die 122, thereby preventing the coating film 220 wound on the main roller 130 from being deformed.

As described above, the method of manufacturing the plastic corrugated board of the present invention is a method of manufacturing the corrugated panel 210, without a separate heating member for thermally fusing the coating film 220 on which the printing pattern 222a (see FIG. 2) The coating film 220 is thermally fused. This reduces the process cost of the plastic corrugated cardboard 200 and simplifies the process for printing the printed pattern 222a on the plastic corrugated cardboard 200, thereby shortening the processing time.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

100: plastic cardboard manufacturing apparatus 110: film roller
120: corrugator molding machine 130: main roller
140: upper vacuum molding machine 150: lower vacuum molding machine
160: connection line 170: power brake
180: Sub roller 200: Plastic corrugated cardboard

Claims (16)

A film roller wound around a rotatable coating film having a print pattern formed on one surface thereof;
A corrugator molding machine for processing corrugated panel made of plastic material through extrusion using heat; And
The corrugated cardboard panel being rotatably mounted adjacent to the corrugated cardboard molding machine, the corrugated cardboard panel being drawn from the corrugated cardboard panel so that the other face of the coating film is thermally fused to the corrugated cardboard panel by using the residual heat of the corrugated cardboard panel by the extrusion molding, And a main roller for guiding and contacting the coating film drawn out from the film rollers. The method according to claim 1,
The main roller
Wherein the cooling water is supplied from the outside so as to prevent the coating film wound on the main roller from being deformed due to the temperature rise of the main roller due to the radiant heat of the corrugator molding machine. The method according to claim 2,
An upper vacuum molding machine installed adjacent to the main roller at one side of the main roller and vacuum-absorbing one side of the corrugated cardboard panel to which the coating film is attached to form the corrugated cardboard panel; And
The corrugated cardboard panel according to claim 1, wherein the corrugated cardboard panel is disposed adjacent to the corrugated cardboard forming machine and spaced apart from the upper vacuum forming machine. The coating film is attached to the corrugated cardboard panel, And a lower vacuum molding machine for curing,
In the lower vacuum molding machine,
A body on which the corrugated cardboard panel is mounted and vacuum-absorbing the corrugated cardboard panel; And
And a cooling line installed inside the body for introducing cooling water. The method of claim 3,
Further comprising a connection line connected to an output end of the cooling line and having an output end connected to the main roller to provide cooling water introduced from the cooling line to the main roller. The method of claim 3,
Wherein a distance between the upper and lower vacuum molding machines and the corrugator molding machine is 100 mm to 130 mm. The method of claim 5,
In the corrugator molding machine,
A panel manufacturing section for manufacturing a plastic panel using a plastic raw material; And
And a tee die disposed adjacent to the panel manufacturing section and extruding the plastic panel drawn from the panel manufacturing section to manufacture the corrugated panel panel. The method according to claim 1,
Further comprising a power brake connected to the film rollers for forcibly stopping the rotation of the film rollers to adjust the tensile force of the coating film positioned on the path from the film rollers to the main rollers, . The method according to claim 1,
And at least one sub roller provided on a path provided to the main roller for guiding the coating film drawn from the film roller toward the main roller, Characterized in that the plastic corrugated cardboard manufacturing apparatus. The method according to claim 1,
Wherein the coating film wound on the film rollers comprises a printing film on which the printing pattern is printed on one side and the fusion film laminated on the other side of the printing film,
Wherein one of the fusing film and the print film is a stretched film and the other is a lead-free film. Providing a main roller with a coating film on which a printing pattern is formed on one surface wound on a film roller;
Processing a corrugated panel made of a plastic material by extrusion molding using a corrugated cardboard molding machine; And
The main rollers are rotated on the other side of the corrugated cardboard panel drawn from the corrugated cardboard molding machine while the other side of the coating film wound on the main rollers is in contact with the corrugated cardboard panel, And thermally fusing the coating film to the corrugated panel. The method of claim 10,
The step of thermally fusing the coating film comprises:
The main roller is heated by the radiant heat of the corrugator molding machine to prevent the coating film wound on the main roller from being deformed to maintain the temperature of the main roller at an appropriate temperature by providing cooling water to the main roller, Wherein said method comprises the steps of: The method of claim 10,
After the step of thermally fusing the coating film,
Further comprising the step of shaping and curing the corrugated cardboard panel with the corrugated cardboard panel having the coating film attached therebetween, the corrugated cardboard panel being disposed between the upper vacuum molding machine and the lower vacuum molding machine,
In the step of shaping and curing the corrugated panel,
Wherein the upper and lower vacuum molding machines are shaped through vacuum suction of the corrugated cardboard panel to which the coating film is attached and are cooled and hardened by the cooling water provided to the lower vacuum molding machine. The method of claim 12,
Wherein the cooling water discharged from the lower vacuum molding machine is supplied to the main roller to maintain the temperature of the main roller at an appropriate temperature. The method of claim 10,
Wherein the step of machining the corrugated panel comprises:
The panel manufacturing section of the corrugator molding machine manufacturing a plastic panel using a plastic raw material; And
And the step of forming the corrugated panel by extruding the plastic panel drawn out from the panel manufacturing portion by a tee portion of the corrugator molding machine,
Wherein during the corrugated panel processing, the temperature of the tie die is maintained at 190 캜 to 200 캜. The method of claim 10,
In the step of thermally fusing the coating film,
Wherein the tension of the coating film located on the path from the film roller to the main roller is controlled by intermittently forcibly stopping and releasing the rotation of the film roller by driving the power brake. The method of claim 10,
Wherein the coating film wound on the film rollers is provided with a print film on which the print pattern is printed on one side and a fusion film laminated on the other side of the print film,
Wherein one of the fused film and the print film is provided with a stretched film and the other is provided with a non-stretched film.

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