KR100816300B1 - Pet sheet and manufacture method - Google Patents

Abstract

A PET(Polyethylene Terephthalate) sheet and a manufacturing method thereof are provided to arrange a protective film on a lamination resin material and a decorative film under the lamination resin material, and press the films with an embossed roller. A protective film(71) is formed on a lamination resin material(41), and a decorative film(51,52) is formed under the lamination resin material. The decorative film is thermally rolled by a heat transfer roller having an embossed surface so that a predetermined pattern is formed on the decorative film.

Description

PETIT SHEET AND MANUFACTURE METHOD}

1 is a view for explaining a resin compounding and dehumidification process of the PET sheet manufacturing process according to the present invention,

2 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention,

3 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention,

4 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention,

5 is a view showing a cross section of the PET sheet according to the present invention manufactured through the above process,

6 is a view showing an edge product cutting device of the PET sheet manufacturing apparatus according to the present invention.

<Explanation of symbols for the main parts of the drawings>

41: lamination resin raw material, 51 (52): decoration film

71: protective film

The present invention relates to a high gloss polyethylene terephthalate (PET) sheet, and more particularly, to a polyethylene terephthalate sheet having a protective coating on its surface and a decorative film engraved on its lower surface, and a manufacturing method thereof.

When manufacturing the conventional embossed paper was adopted a method of expressing the intaglio or embossed pattern on the surface of the sheet. Sheets of this type require foreign matters to be caught on the surface when they are attached to furniture or the like, and require periodic cleaning, and are exposed to the outside, which may cause wear or damage.

If the embossed decoration film is formed on the lower portion of the sheet will be able to solve the above problems.

Therefore, an object of the present invention is to form a decoration film on the bottom of the PET sheet to protect the decoration film and to add a sense of depth of the product.

Another object of the present invention is to increase the gloss and surface hardness by performing a protective coating on the surface of the PET sheet.

According to one aspect of the present invention, there is provided a PET sheet, in which the protective film is formed on the upper surface of the resinous lamination raw material, a decoration film is formed on the lower surface of the resinous lamination raw material, the decoration film is , By a transfer device in which an embossed pattern is engraved on a surface thereof, characterized in that a predetermined pattern is formed.

Preferably, the protective film is characterized in that the UV treated film.

Preferably, the decoration film is characterized in that consisting of a raw film and a three-dimensional fabric film.

Preferably, the resinous lamination material is characterized in that the polyethylene terephthalate glycol (PETG).

According to another aspect of the present invention, there is provided a method for producing a PET sheet, the method comprising the steps of forming a resinous lamination raw material, and forming a decoration film on the bottom surface of the resinous lamination, the upper surface of the resinous lamination raw material Forming a protective film on the surface, transferring the pattern by pressing a roller having an embossed pattern on the surface from below, cutting the sheet to a predetermined width, and pressing the pattern on the decoration film Laminating a protective tape for molding on top of the sheet, applying a predetermined amount of primer (adhesive aid) to the lower surface of the sheet, drying the primer of the sheet, cutting the sheet to a predetermined length and winding up Characterized in that made.

Preferably, the resin lamination material is formed by mixing and dehumidifying the resin PETG raw material to be discharged from the T-shaped die.

Preferably, the lamination material and the decoration film is characterized in that the thermal bonding between the roller consisting of three rollers adjacent to each other.

Preferably, among the three rollers, the first and second rollers on which the lamination raw material and the decoration film are thermocompressed are operated at a temperature of 180 ° C., and the third roller is heated to a temperature of 80 ° C. It is characterized by performing the function of cooling the thermocompressed sheet.

Preferably, in the transfer step, a heater is disposed on an upper portion of the thermo-compressed sheet and a metallic roller having an embossed pattern is disposed on a lower surface thereof to apply pressure to the sheet at a predetermined pressure to transfer the pattern to the decoration film. It is characterized by.

Preferably, after cutting the sheet to a predetermined width, detecting the length of the sheet, cutting the sheet to a predetermined length, and stacking and packing the sheet cut to the predetermined length do.

Preferably, the drying step is characterized in that it is carried out in two steps.

Preferably, the first drying step is characterized in that the drying is performed by blowing only through the blowing duct without heat treatment.

Preferably, the second drying step is characterized in that the drying is performed through a blowing fan while the sheet is maintained at a constant temperature.

Preferably, the edge product cutting step is further included.

Preferably, the plurality of edge products are cut in a batch by the cutting roller, and the winding device of the edge product is disposed in two stages at the rear end of the cutting roller at every cut edge, and the edge products adjacent in the vertical direction of the cutting roller are Characterized in that arranged to cross.

(Example)

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

It is to be understood that such embodiments are intended to facilitate the description of the invention and are not intended to limit the invention to these embodiments.

In the accompanying drawings, Figure 1 is a view for explaining the resin compounding and dehumidification process of the PET sheet manufacturing process according to the present invention.

As can be seen in the drawing, first, the resin raw material is added to the blender 10 and blended. The main raw material of this resin raw material may be poly ethylene terephthalate glycol (PETG).

At this time, the blender 10 may be blended by adding a catalyst for flame retardant, flame retardant, nonflammable.

The resin raw material blended in this way is moved to the dehumidifier (Hopper) through a pipe (15) connected to the upper side of the dehumidifier 20 through the lower part of the blender. A vacuum pump (not shown) is connected to the pipe 15 so that the resin raw material blended by the suction force of the vacuum pump is moved from the blender 10 to the dehumidifier 20.

In the dehumidifier 20, dehumidification is performed by high temperature, and the dehumidification amount is about 150 Kg / hour. This amount of dehumidification can be increased further, for example to 400 Kg / hour.

2 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention.

As can be seen in the figure, the resin raw material dehumidified through the dehumidification process is melted and extruded in the extruder (30). That is, in the extruder 30, the resin raw material is preferably melted at 230 ° C. to 265 ° C. and pushed to the rear end.

The extruder 30 is subdivided into a total of five parts, and it is possible to extrude the resin raw material therein while controlling the temperature step by step.

The melt-extruded resin raw material flows into the T-shaped die 40. The T-shaped die 40 is a passive discharge amount adjusting device for discharging the resin raw material at a constant pressure, and the lamination width thereof may be preferably 1,550 mm. The T-shaped dice 40 may also be subdivided into five parts.

Meanwhile, the original film 51 and the three-dimensional fabric film 52 are supplied from two rollers disposed in the original decoration film input device 50, that is, the original roller and the three-dimensional fabric roller, so that the lamination roller 60 is applied. It is injected into). The original decoration film input device 50 is a kind of tension machine for transferring the original film 51 and the three-dimensional fabric film 52 to the lamination roller 60 while maintaining a constant smoothness.

The lamination roller 60 heat-bonds the resinous raw material (PETG) melted and discharged from the T-shaped die 40 with the decoration film supplied from the original decoration film input device 50, and then cools it to its thickness and surface. The glossiness is controlled.

 As can be seen in the figure, the lamination roller 60 may preferably consist of three rollers, namely the first to third rollers 61, 62, 63, between which the resinous lamination raw material and the decoration film are placed. Pass through them so that they adhere to each other. That is, the first roller 61 and the second roller 62 are heated to about 180 ° C., and the resin lamination raw materials and decoration films 51 and 52 of about 200 ° C. discharged from the T-shaped dice 40 are separated. It passes through and heat bonds.

The resin lamination raw material and the decoration film thermally bonded while passing through the first and second rollers are cooled to some extent, but are further cooled while passing between the second roller 62 and the third roller 62. That is, the third roller 63 is heated to about 80 ° C. to further cool the heat-bonded resin lamination raw material and the decoration film.

On the other hand, the thickness of the resin lamination raw material and the decoration film thermally bonded while passing through the lamination roller 60 is maintained at about 0.5mm to 2.0mm.

In addition, the surface glossiness of the film is adjusted while being pressed, heated and cooled in the lamination roller 60.

Thus, the protective film or UV and the transfer film 71 supplied through the protective film supply device 70 is bonded to the heat-adhesive and thickness-adjusted sheet.

 At this time, the protective film supply device 70 is supplied to the transfer device 80 by adjusting the protective film 71 to a predetermined tension, such as the original decoration input device 50.

The protective film 71 is thermally bonded again on the resin lamination raw material and the decoration film thermally bonded in the transfer device 80.

As shown in the drawing, the transfer device 80 is composed of two rollers, and the upper roller is a high temperature silicon roller, which is usually maintained at 165 ° C.

In addition, the lower roller is preferably a metallic roller, and a pattern is embossed on the surface thereof. The decoration film adhered to the lower portion of the sheet is disposed on the upper portion of the lower roller, so that the embossed pattern engraved on the lower roller is transferred to the decoration film when the lower roller is pressed while heat is applied from the upper roller.

The sheet having passed through the transfer device 80 is then adjusted by the sheet width adjusting device 90. That is, the sheet which is usually conveyed in a width of about 1500 mm is cut into a constant width, for example, a width of 1220 mm.

The sheet cut in this width may then be transferred to the length adjusting device 100 and cut to a predetermined length, for example, 2440 mm.

3 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention.

As can be seen in the figure, the length adjusting operation sensor 110 is installed at the rear end of the length adjusting device 100, when a predetermined length signal is input to the main controller (not shown) automatically cut in the length adjusting device 100 Done.

At the rear end of the length control operation sensor 110 is placed and the packing space 120 for placing and packing the sheet cut to a certain length in the length adjusting device (100). At a predetermined position of the space, a roller 121 is installed to automatically flow the sheet conveyed from the length adjusting device 100 and the length adjusting operation sensor 110 into the loading and packing space 120.

Here, in the case of a general product, a sheet is wound by 100M unit. Therefore, the length adjusting device 100, the length adjusting operation sensor 110, and the loading and packing space 120 described above are not special products such as HPM, LPM, etc. Do not use if.

As described above, assuming a general product production process, the sheet passing through the sheet width adjusting device 90 passes through the forming protective tape laminating device 130.

The molding protective tape laminating device 130 is a device for laminating the laminated tape on the sheet to prevent deformation when heat or the like is applied to the sheet.

As such, the sheet on which the forming protective tape is laminated is transferred to the primer processing device 140. In the primer processing apparatus 140, the primer (glue adjuvant) is applied to the lower surface of the product in a predetermined amount with a lower metal roller 142 while pressing at a constant pressure without damaging the surface of the product with a compression roller 141 such as silicon. Done.

At this time, the pressure applied to the product through the compression roller 141 may be, preferably, 5mg / cm ² .

As can be seen in the figure, the lower part of the product is immersed in the lower metal roller 142 in the container containing the primer, and by rotating the roller can be seen that the primer is applied to the lower surface of the product.

The sheet coated with the primer is then transferred to the primary drying apparatus 150. In the drying apparatus 150, as shown in the drawing, a blower is disposed at the bottom to simply blow the wind toward the product from the lower direction of the product without heat treatment.

Arrows in the figure indicate that the wind comes out of the blower outlet. In this way, the primer-coated product is first dried.

4 is a view for explaining a subsequent process of the PET sheet manufacturing process according to the present invention.

As can be seen in the drawing, the first dried sheet is transferred to the secondary drying device 160 via the cutting device 190. Description of the cutting device 190 will be described later.

The secondary drying apparatus 160 includes a heater 161 and a blower 162. The heater is a device for maintaining and supplying a constant temperature to the sheet to offset the sudden temperature change according to the season as a constant temperature device.

When the work room is lowered to 7 to 8 ℃, there is a possibility that a defect may occur during the work process, it is necessary to always maintain the temperature above 15 ℃, the heater 161 is about 20cm away from the product, about 60 ℃ Maintain the temperature.

Blower 162 is preferably installed in the lower portion of the heater in the form of a fan to blow the heat of the heater to the sheet product to dry the sheet product secondary.

A sheet length detection sensor 170 and a sheet winding device 180 are disposed at the rear end of the secondary drying device 160. The sheet length detection sensor 170 is connected to the sheet winding device 180 to measure the length of the product. When the sheet product of a certain length is wound on the sheet winding device 180, the sheet product is sensed and transmitted to the cutting device 190, and the cutting device 190 cuts the sheet product to a predetermined length.

The sheet winding device 180 is wound around the product to a certain length, usually about 100M, this winding device also serves to maintain a constant by adjusting the tension of the product.

Figure 5 is a view showing a cross section of the PET sheet according to the present invention manufactured through the above process.

As described above, in the PET sheet according to the present invention, the lamination resin raw material (PETG) 41 is disposed in the center, and the protective film 71 is formed on the upper surface of the sheet, and the decoration films 51 and 52 are formed on the lower surface of the sheet. You can see that. As can be seen in the figure, the decoration film can be seen that the embossed pattern formed on the surface of the lower roller of the transfer apparatus is transferred.

6 is a view showing an edge product cutting device of the PET sheet manufacturing apparatus according to the present invention.

An edge product cutting device refers to a device for winding a sheet (one roll) produced through a decoration laminating device in a thinly cut to a predetermined width. Usually it is cut as thin as 18mm, 21mm, 28mm or 33mm.

The product wound in the sheet winding device shown by reference numeral 180 in FIG. 4 is transferred to the cutting roller 210 and the sheet winding roller 220 via the sheet length detection sensor 200.

The sheet length detection sensor 200 is connected to the cutting roller 210 and the sheet winding roller 210 of the rear end to detect this when the product of a predetermined length is wound on the sheet winding roller 220, the product in the cutting roller 210 To cut.

The cutting roller 210 cuts a plurality of sheets (one roll) at the same time at a predetermined width.

As can be seen in the drawing, the sheet winding roller 220 can be seen that is arranged up and down with respect to the cutting roller (210). It can be seen that the product is cut slightly and wound so that it does not overlap with neighboring edge products.

Thus, by implementing the present invention, a protective film such as UV is disposed on the upper surface of the lamination resin raw material (PETG), and a decoration film is formed on the lower surface of the laminating resin raw material (PETG) to form an embossed pattern from the lower direction. Since the embossed pattern was transferred to the decoration film.

 Therefore, it is possible to implement a high gloss sheet, the decoration film is disposed on the lower surface of the product has the effect of adding a sense of depth of the product.

The present invention has been shown and described with reference to certain preferred embodiments, but the present invention is not limited to the above-described embodiments, and the general knowledge in the art to which the present invention pertains is not limited to the spirit of the present invention. Various alternative changes and modifications will be possible by the possessor.

Claims (15)

PET sheet, A protective film is formed on the upper surface of the resin lamination material, and a decoration film is formed on the lower surface of the resin lamination material. PET sheet characterized in that. The method of claim 1, The protective film is a PET sheet, characterized in that the UV treated film. The method of claim 1, The decoration film is a PET sheet, characterized in that consisting of a raw film and a three-dimensional fabric film. The method of claim 1, The resin lamination material is a PET sheet, characterized in that polyethylene terephthalate glycol (PETG). In the PET sheet manufacturing method, Forming a resin lamination material, and heat-bonding the decoration film on the bottom thereof and simultaneously molding the sheet into a sheet ; Forming a protective film on an upper surface of the resin lamination raw material, Pressing a roller having an embossed pattern formed on the surface thereof from the bottom to transfer the pattern onto the decoration film to which the resin lamination material is heat-bonded; Cutting the sheet to a predetermined width, Laminating a forming protective tape on an upper portion of the sheet on which the pattern is transferred to the decoration film; Applying a certain amount of primer (adhesive aid) on the lower surface of the sheet, Drying the primer of the sheet, PET sheet manufacturing method comprising the step of winding the sheet by cutting to a predetermined length. The method of claim 5, The resin lamination raw material is a PET sheet manufacturing method characterized in that the resin PETG raw material is blended and dehumidified to form a discharge from the T-shaped dice. The method of claim 5, The lamination raw material and the decoration film is a PET sheet manufacturing method characterized in that the thermal bonding between the roller consisting of three rollers adjacent to each other. The method of claim 7, wherein First and second roller of the three rollers is a heat-pressing the lamination material and the decoration film is an operate in a heated state at a temperature of 180 ℃, the third roller is heated to a temperature of 80 ℃ the thermocompression A method of producing a PET sheet, characterized by performing a function of cooling the thermocompressed sheet when the resin lamination raw material and the decoration film pass between the second and third rollers. The method of claim 5, In the step of transferring the pattern, a heater is arranged on the upper part of the thermo-compressed sheet and a metallic roller having an embossed pattern is disposed on the surface thereof to apply pressure to the sheet at a predetermined pressure to transfer the pattern to the decoration film. PET sheet production method characterized in that. The method of claim 5, After cutting the sheet to a certain width, PET sheet, characterized in that the sensing of the length of the sheet, cutting the sheet to a certain length, and stacking and packing the sheet cut to a certain length Manufacturing method . The method of claim 5, Drying the primer of the sheet is a PET sheet manufacturing method, characterized in that is carried out in two steps of the first and second drying step. The method of claim 11 , The first drying step is a PET sheet manufacturing method characterized in that the drying is performed only by blowing through the blowing duct without heat treatment. The method of claim 11 , In the second drying step, the PET sheet manufacturing method characterized in that the drying is performed through a blowing fan and the sheet is dried while maintaining at a predetermined temperature. The method of claim 5, PET sheet manufacturing method further comprises the step of cutting the edge product. The method of claim 14, The plurality of edge products are cut in a batch by the cutting roller, and the winding device of the edge product is disposed in two steps in the direction of the cutting roller at the rear end of the cutting roller at every cut edge, so that adjacent edge products cross each other. PET sheet manufacturing method, characterized in that.

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