KR20180118905A - Production method for 3d curved glass for automobile - Google Patents

Abstract

Provided is a method for producing a three-dimensional (3D) curved glass applied to automobiles, comprising the following steps: preparing a flat glass by processing a disc glass using a laser; slicing the flat glass; attaching the flat glass to a mold frame and applying heat to the same to mold the same in a curved glass; and printing the curved glass in a gravure offset manner.

Description

TECHNICAL FIELD [0001] The present invention relates to a 3D curved glass manufacturing method applicable to a car,

The present invention relates to a 3D curved glass manufacturing method applied to an automobile.

A car means a means of transporting people or cargo. In addition, a variety of curved glasses are applied to automobiles because of their design demands and the enhancement of automobile functions.

In summer, the temperature of the automobile rises rapidly due to the sunlight. For example, in the case of a dashboard of a summer automobile, the temperature goes up to about 90 ° C, the temperature of the front seat increases to about 70 ° C, and the temperature of the rear seat increases to about 60 ° C.

In winter, the temperature of the car may drop to -40 ° C in certain areas.

Therefore, the light shielding portion formed on the outline line of the curved glass applied to the automobile can not be formed using a film because of reasons such as deformability, yellowing, tearing, etc., and is directly printed with ink or the like.

Such printing can be accomplished by various methods such as screen printing, inkjet printing, tampon printing, and gravure-offset printing.

Here, the tampon printing method and the gravure-offset printing method are advantageous in that they can be printed on the surface of the curved glass.

Gravure-offset printing is a method in which ink is buried in a patterned cylindrical pattern roll to remove ink in the convex portion of the pattern roll, and then the concave And the ink of the elastic roller is transferred again to the object to be printed.

However, there is a problem in that printing of a curved glass by gravure-offset printing is difficult because the elastic roller is deformed by the curved glass, and therefore it is difficult to accurately transfer the ink to the curved glass.

On the other hand, the technology of the background of the present invention is disclosed in Korean Patent Publication No. 10-1997-0065453.

The present invention provides a 3D curved glass manufacturing method applied to an automobile which is produced in order to solve the above-mentioned problems and which has good productivity, can maintain quality at a certain level or more, and can reduce manufacturing cost and manufacturing time do.

A 3D curved glass manufacturing method applied to an automobile according to the present invention includes the steps of: fabricating a flat glass by processing a disc glass using a laser; Slicing the flat glass; Attaching the flat glass to a forming mold and applying heat thereto to form a curved glass; And printing the curved glass in a gravure offset manner.

The 3D curved glass manufacturing method applied to the automobile may further include heating the curved glass by providing heat to the curved glass and then rapidly cooling the curved glass.

In the step of taking the flat glass, the outer angle of the flat glass can be chamfered.

In the step of molding the curved glass, the molding may be performed using a molding frame made of diatomaceous earth.

And drying and then packaging the curved glass printed in the printing step.

The 3D curved glass manufacturing method applied to the automobile of the present invention is good in productivity, can maintain the quality at a certain level or more, and can reduce manufacturing cost and manufacturing time.

In addition, the 3D curved glass manufacturing method applied to automobiles of the present invention has good releasability because it forms a curved glass using a forming frame made of diatomaceous earth.

Further, the forming frame made of diatomaceous earth is not oxidized due to the characteristics of the material of the diatomaceous earth, and there is no phenomenon that the seed is stuck to the curved glass, so that the polishing process can be omitted, and manufacturing cost and manufacturing time can be reduced.

On the other hand, since the elastic part of the gravure offset printing apparatus used in the 3D curved glass manufacturing method applied to the automobile of the present invention can absorb the load applied to the curved glass, the elastic roller can be printed It is possible to ensure uniformity and straightness of the printing thickness of the printing surface of the curved glass.

The curved glass fixing jig of the gravure offset printing apparatus can adjust the angle of contact between the curved glass and the elastic roller by rotating the curved glass.

The curved glass fixing jig can stably absorb the lower surface of the curved glass.

1 is a flowchart of a 3D curved glass manufacturing method applied to an automobile according to an embodiment of the present invention,
FIG. 2 is a view showing a process of manufacturing a curved glass by the 3D curved glass manufacturing method applied to the automobile of FIG. 1,
3 is a conceptual diagram of a 3D glass molding apparatus according to another embodiment of the present invention,
Fig. 4 is a perspective view of a forming mold of the 3D glass forming apparatus of Fig. 3,
5 is a cross-sectional view taken along line AA of FIG. 3,
6 is a conceptual diagram of a gravure offset printing apparatus according to another embodiment of the present invention,
Fig. 7 is a perspective view of a curved glass fixing jig of the gravure offset printing apparatus of Fig. 6,
8A and 8B are views for explaining a suction unit of the curved glass fixing jig of FIG. 1,
Fig. 9 is a view for explaining a guide part of the curved glass fixing jig of Fig. 1,
FIG. 10 is a view for explaining a first plate and a second plate of the curved glass fixing jig of FIG. 1. FIG.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the understanding why the present invention is not intended to be a complete disclosure.

In describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), and (b) may be used. These terms are intended to distinguish the constituent elements from other constituent elements, and the terms do not limit the nature, order or order of the constituent elements.

Hereinafter, a 3D curved glass manufacturing method applied to an automobile according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a flow chart of a 3D curved glass manufacturing method applied to an automobile according to an embodiment of the present invention. FIG. 2 is a view illustrating a process of manufacturing a curved glass by the 3D curved glass manufacturing method applied to the automobile of FIG. Fig.

1 and 2, a 3D curved glass manufacturing method applied to an automobile according to the present invention includes a step S110 of processing a disc glass, a step S120 of taking a flat glass, a step of molding a curved glass, (S130) and printing (S140).

In the step of processing the original glass (S110), the original glass 10 may be cut into a predetermined shape to produce the flat glass 20.

More specifically, in step S110 of processing the disc glass, a laser beam is irradiated to the disc glass 10 by the laser cutting device 50, and the disc glass 10 is irradiated onto the flat glass (20).

At this time, the laser cutting device 50 can jet the cooling fluid for preventing the deformation of the cut portion of the flat glass 20 by the laser beam along the cutting path of the laser beam.

For example, the laser beam irradiated by the laser cutting device 50 is a CO2 laser beam, and the cooling fluid may be water, ethanol, water-soluble silicone oil, ethanol, or the like. However, the present invention is not limited thereto.

The step of processing the original glass (S110) may further include a step (S113) of checking the state of the flat glass.

In the step S113 of confirming the state of the flat glass, after confirming the defects of the flat glass 20 processed by the laser beam, it is possible to remove the flat glass 20 whose defect has been confirmed.

In step S120 of cutting the flat glass, sharp edges of the outer edge of the flat glass 20 cut by the laser can be removed.

The chamfering operation of the flat glass 20 can be performed using a CNC chamfer device.

When the chamfering operation of the flat glass 20 is completed in step S120 of skimming the flat glass, the flat glass 20 may be cleaned.

In the step of forming the curved glass into the curved glass (S130), the flat glass 20 may be mounted on the mold 110 and heated to deform the curved glass 30.

When the molding of the curved glass 30 is completed in the step S30 of forming the curved glass, the curved glass 30 may be cleaned.

More specifically, the flat glass 20 may be formed into the curved glass 30 by using the 3D glass forming apparatus 100 in the step S 130 of forming the curved glass.

Hereinafter, the 3D glass forming apparatus 100 will be described in detail.

FIG. 3 is a conceptual view of a 3D glass molding apparatus according to another embodiment of the present invention, FIG. 4 is a perspective view of a molding frame of the 3D glass molding apparatus of FIG. 3, and FIG. 5 is a sectional view of A-A of FIG.

3 to 5, the 3D glass forming apparatus 100 may include a forming die 110, a chamber 120, and a transferring unit 130.

The forming frame 110 provides the curved surface 111 so that the flat glass 20 is deformed by its own weight, and can be made of diatomaceous earth.

The forming die 110 may further include a seating part 112.

Both ends of the flat glass 20 are seated on the seating part 112 and the curved surface part 111 is disposed between the seating parts 112 to provide a curved surface curved downward.

Accordingly, when the heat provided from the chamber 120 is applied to the flat glass 20, the flat glass 20 is deformed to contact the curved surface of the curved surface 111.

The seating part 112 may include an inclined surface 1121 and a groove 1122.

The inclined surface 1121 includes a first inclined surface 1121a and a second inclined surface 1121b and the first inclined surface 1121a and the second inclined surface 1121b face each other, As shown in FIG.

The groove 1122 is formed at the lower end of the inclined surface 1121, and both ends of the flat glass 20 can be inserted and seated.

The groove 1122 may include a first groove 1122a formed at a lower end of the first inclined surface 1121a and a second groove 1122b formed at a lower end of the second inclined surface 1121b.

One end of the flat glass 20 is brought into contact with one of the first inclined surface 1121a and the second inclined surface 1121b and then slides downward so that the first groove 1122a and the second groove 1122b The other end of the flat glass 20 can be easily inserted into the other one of the first groove 1122a and the second groove 1122b.

Meanwhile, the diatomite may include aluminum oxide (Al2O3), silicon dioxide (SiO2), and ferric oxide (Fe2O3).

In more detail, the diatomite may comprise 1 to 20 parts by weight of aluminum oxide (Al2O3), 75 to 95 parts by weight of silicon dioxide (SiO2), and 1 to 10 parts by weight of ferric oxide (Fe2O3).

The chamber 120 has a heating space 120b formed therein.

The chamber 120 may provide 350 ° C to 750 ° C heat to the heating space 120b.

Therefore, the flat glass 20 and the forming die 110 transferred to the heating space 120b of the chamber 120 can be supplied with the heat of 350 ° C to 750 ° C by the chamber 120.

When heat is provided between the flat glass 20 and the forming mold 110, the heat stays between the forming mold 110 and the flat glass 20 due to the high thermal insulation property of the diatomaceous earth, 20, and the deformation time of the flat glass 20 can be shortened.

The transfer unit 130 may transfer the forming die 110 to the inside and the outside of the chamber 120. More specifically, the transfer unit 130 transfers the forming die 110 to the heating space 120b through one side of the chamber 120, and transfers the forming die 110 to the heating space 120b through the other side of the chamber 120 120b may be transferred to the outside.

The transfer unit 130 may transfer the forming die 110 in a circulating manner.

The chamber 120 may further include a first space 120a and a second space 120c and the transfer unit 130 may transfer the forming die 110 from the outside to the first space 120a. A second transfer part 132 for transferring the chamber 120 in the heating space 120b and a second transfer part 132 for transferring the chamber 120 to the outside in the second space 120c. And a third transfer unit 133. [

The mold 110 located outside is opened by the first door 121 between the first space 120a and the outside and the second door 121 between the first space 120a and the heating space 120b is opened, The first transfer part 131 moves to the first space 120a when the second transfer part 122 is closed.

When the first door 121 is closed and the second door 122 is opened, the forming frame 110 can be moved by the second transferring part 132 into the heating space 120b.

The curved glass 30 formed in the heating space 120b moves to the second space 120c when the third door 123 between the heating space 120b and the second space 120c is opened When the third door 123 is closed and the fourth door 124 between the second space 120c and the outside is opened, the forming die 110 is transferred to the outside by the third transferring unit 133 .

Example 1_Molding frame manufacture

The mold was made of diatomaceous earth containing 12.3% of aluminum oxide (Al ₂ O ₃ ), 80.1% of silicon dioxide (SiO ₂ ), 8.2% of ferric trioxide (Fe ₂ O ₃ ) and the remaining minerals, , The length and height are 40 cm * 15 cm * 10 cm, and the interval between the grooves is 30 cm.

Example 2_Molding frame manufacture

The mold was made of diatomaceous earth containing 10.2% of aluminum oxide (Al ₂ O ₃ ), 85.3% of silicon dioxide (SiO ₂ ), 5.8% of ferric trioxide (Fe ₂ O ₃ ) and the remaining minerals, , The length and height are 40 cm * 15 cm * 10 cm, and the interval between the grooves is 30 cm.

Example 3_Molding frame manufacture

The mold was made of diatomaceous earth containing 8.6% of aluminum oxide (Al ₂ O ₃ ), 89.1% of silicon dioxide (SiO ₂ ), 3.2% of ferric trioxide (Fe ₂ O ₃ ) and the remaining minerals, , The length and height are 40 cm * 15 cm * 10 cm, and the interval between the grooves is 30 cm.

Experimental Example 1_ Inspection of surface foreign matter of curved glass

A flat glass 20 of 30 cm * 10 cm * 35 mm in width, length and thickness was mounted on the forming molds prepared in Examples 1 to 3, and the mold and the flat glass were heated for 23 minutes in a heating space at a temperature of 720 캜 (20). The molded curved glass 30 was taken out of the chamber, cooled at room temperature, and then cleaned.

Unlike the molding frame made of graphite, the molding frame according to Examples 1 to 3 had no foreign substance on the surface of the manufactured curved glass 30 and was not found as a seed embedded in the curved glass 30.

EXPERIMENTAL EXAMPLE 2 Modification of Molding Frame by Temperature and Time of Exposure

The molds of Examples 1 to 3 were heated in a chamber at a temperature of 900 ° C to measure the strain of the distance from the first groove to the second groove. The heating time of the mold was changed to 20 minutes, 25 minutes, 30 minutes, 35 minutes and 40 minutes.

Table 1 shows the strain of the mold of Example 1 according to the heating time, Table 2 shows the strain of the mold of Example 2 with heating time, and Table 3 shows the strain of the mold of Example 3 And the strain rate of the mold.

Turn Heating time Strain One 20min 0.00001 2 25 min 0.00001 3 30min 0.00001 4 35min 0.00001 5 40min 0.00001

Turn Heating time Strain One 20min 0.00001 2 25 min 0.00001 3 30min 0.00001 4 35min 0.00001 5 40min 0.00001

Turn Heating time Strain One 20min 0.00001 2 25 min 0.00001 3 30min 0.00001 4 35min 0.00001 5 40min 0.00001

As shown in Tables 1 to 3, it was confirmed that the molds according to Examples 1 to 3 were hardly deformed by the temperature, and thus were suitable for a glass requiring precise molding.

Experimental Example 3_ Number of times the mold can be used

A flat glass 20 of 30 cm * 10 cm * 35 mm in width, length and thickness was mounted on the forming molds prepared in Examples 1 to 3, and the mold and the flat glass were heated for 23 minutes in a heating space at a temperature of 720 캜 Heat was applied to the curved glass plate 20, the molded curved glass plate 30 was taken out of the chamber, cooled at a normal temperature, and the curved glass plate 30 was removed from the mold.

There was hardly any change in the curvature of the curved portion of each of the forming molds manufactured in Examples 1 to 3 and the intervals between the grooves. The number of usable times was confirmed to be 3,000 times or more.

Meanwhile, the 3D curved glass manufacturing method applied to the automobile may further include a step S132 of reinforcing the curved glass.

In the step of strengthening the curved glass 30, heat is applied to the curved glass 30, and the curved glass 30 is rapidly frozen to compressively deform the curved glass 30, It is possible to increase the mechanical strength of the curved glass 30 by tensile deformation of the inside of the curved glass 30.

The 3D curved glass manufacturing method applied to the automobile may further include a step S134 of checking the state of the curved glass.

In the step S134 of confirming the state of the curved glass, it is possible to check whether the curved glass 30 is reinforced, and to remove the flat glass 20 from which the defect is confirmed.

The printing step S140 may print the curved glass 30 with the printing material 30a.

For example, the printing step S140 may print the outer periphery of the curved glass 30 as a black matrix layer.

The black matrix layer is printed with black ink on the outer periphery of the curved glass 30, thereby absorbing reflection of external light and improving contrast.

The curved glass 30 may be printed in the gravure offset printing method using the gravure offset printing apparatus 200 in the printing step S140.

FIG. 6 is a conceptual diagram of a gravure offset printing apparatus according to another embodiment of the present invention, and FIG. 7 is a perspective view of a curved glass fixing jig of the gravure offset printing apparatus of FIG.

6 and 7, a gravure offset printing apparatus 200 according to another embodiment of the present invention may print the outline lines L1 and L2 of the curved glass 30.

The gravure offset printing apparatus 200 includes a pattern roller 210, an elastic roller 220, a conveyor 230, and a curved glass fixing jig 300.

The pattern roller 210 may have a cylindrical shape and a pattern 210a may be formed on the surface thereof. The pattern 210a indicates the shape of a groove on the surface of the pattern roller 210. [

The gravure offset printing apparatus 200 may further include a blade 250.

The blade 250 is disposed adjacent to the pattern roller 210 and can remove the printing material 30a on the surface of the pattern roller 210 by scraping the surface of the rotating pattern roller 210. [

More specifically, when the blade 250 scrapes the surface of the pattern roller 210, only the print material 30a of the pattern 210a remains, and the printing material on the surface of the pattern roller 210 (30a) is removed by the blade (250).

The elastic roller 220 is disposed adjacent to the pattern roller 210 and may be rotated in contact with the pattern roller 210.

Accordingly, the printing material 30a remaining on the pattern 210a may be transferred to the elastic roller 220. [

The conveyor 230 conveys the curved glass 30 in a first direction D1 in which the elastic roller 220 is rotated to contact the surface of the curved glass 30 with the elastic roller 220, .

More specifically, the curved glass 30 is mounted on the curved glass fixing jig 300, and the curved glass fixing jig 300 is conveyed in the first direction D1 by the conveyor 230 . The curved glass 30 mounted on the curved glass fixing jig 300 is brought into contact with the elastic roller 220 and the printing material 30a transferred to the elastic roller 220 is transferred to the curved glass 30, Lt; RTI ID = 0.0 > L1, < / RTI >

The curved glass fixing jig 300 can fix, support, and transfer the curved glass 30.

The curved glass fixing jig 300 includes a suction part 310, a pair of seating parts 320, a guide part 330, and an elastic part 340.

8A and 8B are views for explaining a suction unit of the curved glass fixing jig of FIG.

8A and 8B, the adsorption unit 310 can adsorb and fix the lower surface of the curved glass 30

The adsorption unit 310 may include a mounting frame 311 and a vacuum tube 312.

The mounting frame 311 is disposed between the pair of seating portions 320 and a plurality of through holes 311a are formed on the upper surface of the curved shape of the mounting frame 311.

The vacuum tube 312 may be installed in the through holes 311a to absorb the bottom surface of the curved glass 30.

In more detail, the vacuum tube 312 may include a connection tube 3121, a contact tube 3122, and a plurality of latching pieces 3123.

The connection pipe 3121 may be connected to a vacuum pump for sucking air to provide a vacuum to the contact pipe 3122.

The contact tube 3122 extends from the upper end of the connection tube 3121 and has a contact surface 3122a having a larger diameter so as to be in contact with the lower surface of the curved glass 30.

More specifically, the contact surface 3122a refers to the inner surface of the contact tube 3122 that is in contact with the lower surface of the curved glass 30, and the contact surface 3122a corresponds to the lower surface of the curved glass 30 When the connection pipe 3121 provides a vacuum to the contact tube 3122 after the contact, the contact surface 3122a is increased in contact area with the lower surface of the curved glass 30, So that the contact tube 3122 can absorb the lower surface of the curved glass 30.

The plurality of latching pieces 3123 are formed at equal intervals below the contact surface 3122a.

The clamping piece 3123 can prevent the contact pressure between the contact surface 3122a and the bottom surface of the curved glass 30 from being reduced because the vacuum pressure applied to the contact tube 3122 becomes unnecessarily large .

7, the pair of seating portions 320 are fixed to both ends of the suction portion 310, and the lower surface of the curved glass 30, which is attracted by the suction portion 310, Respectively, as shown in Fig.

The seating surface 320a may be a curved surface corresponding to the lower surface of the curved glass 30.

The upper end of the contact surface 3122a protrudes upward from the seating surface 320a and the plurality of locking pieces 3123 are positioned below the seating surface 320a .

According to this structure, the plurality of latching pieces 3123 move finely upward at the first position and can be brought into contact with the curved glass 30, so that the plurality of latching pieces 3123 are connected to the connection pipe 3121 Can prevent the connection tube 3121 from being excessively moved to the curved glass 30 when the contact tube 3122 provides a vacuum to the contact tube 3122.

Fig. 9 is a view for explaining a guide portion of the curved glass fixing jig of Fig. 1. Fig.

9, the guide unit 330 guides movement of the adsorption unit 310 in the up-and-down direction.

The guide portion 330 may include a plurality of pipes 331 and a cylinder 332.

The plurality of pipes 331 may be fixed to the adsorption unit 310 so as to be spaced apart from each other.

For example, four of the plurality of pipes 331 may be fixed to the lower end of the adsorption unit 310 and may be arranged long in the vertical direction.

The cylinder 332 may be formed with an insertion groove 332a through which the angular pipe 331 is inserted and which guides the movement of the angular pipe 331 in the vertical direction.

That is, the plurality of pipes 331 can move up and down in the insertion groove 332a.

The elastic part 340 is installed on the guide part 330 and can be elastically deformed by the pressure applied to the upper surface of the curved glass 30 by the elastic roller 220.

For example, the elastic portion 340 may include a spring 341.

The lower end of the spring 341 is in contact with the upper part of the cylinder 332 and the upper end of the spring 341 is in contact with the upper end of the suction part 310, respectively.

Therefore, when the elastic roller 220 presses the upper surface of the curved glass 30, the pair of seating portions 320 press the suction portion 310 downward, and the suction portion 310 And presses each of the pipes 331 downward.

At this time, both ends of the spring 341 are respectively contracted by the upper end of the cylinder 332 and the lower end of the suction unit 310, and the elastic roller 220 is rotated at a constant pressure It can be pressed.

The elastic portion 340 may further include a magnetic body 142. Since the magnetic substance 142 can provide a magnetic force to the square pipe 331 to buffer the movement of the square pipe 331 by the spring 341, Precision can be increased.

Meanwhile, the guide part 330 may further include a guide plate 334.

The upper portion of the guide plate 334 is mounted on the mounting frame 311. The inner surface of the lower portion of the guide plate 334 is in surface contact with the outer surface of the cylinder 332 to guide the movement of the adsorption unit 310 in the up and down direction.

FIG. 10 is a view for explaining a first plate and a second plate of the curved glass fixing jig of FIG. 1. FIG.

10, the curved glass fixing jig 300 may further include a first plate 351 and a second plate 352. [

The first plate 351 is conveyed by the conveyor 230.

The second plate 352 is rotatably installed on the first plate 351, and the cylinder 332 is fixed.

Accordingly, when the second plate 352 rotates at a predetermined angle, the cylinder 332 and the plurality of pipes 331 rotate, and accordingly, the curved surface glass mounted on the pair of seating portions 320 (30) can also be rotated.

That is, the second plate 352 rotates the curved glass 30 to adjust the angle of contact between the curved glass 30 and the elastic roller 220.

When the printing of the curved glass 30 is completed in the printing step S140, the curved glass 30 may be dried and cleaned.

The 3D curved glass manufacturing method applied to the automobile may further include forming an anti-glare layer (S150).

In the step of forming the anti-glare layer (S150), one surface of the curved glass is etched using fluorine (F) or hydrogen fluoride (HF) to form an antiglare (AG) Glare layer can be formed.

The curved glass 30 on which the anti-glare (AG) is formed can be dried and cleaned.

The 3D curved glass manufacturing method applied to the automobile may further include forming an AR layer (S160).

In the step of forming the AR layer (S160), an anti-reflection (AR) deposition layer for preventing reflection of light may be formed.

And the curved glass 30 on which the AR layer is formed, respectively, can be dried and cleaned and then packaged.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them.

Furthermore, all terms including technical or scientific terms described above have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs, unless otherwise defined. Commonly used terms, such as predefined terms, should be interpreted to be consistent with the contextual meanings of the related art, and are not to be construed as ideal or overly formal, unless expressly defined to the contrary.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or essential characteristics thereof. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: Disc glass
20: Flat glass
30: Surface glass
100: 3D glass molding machine
200: gravure offset printing device
300: Surface glass fixing jig

Claims (5)

Fabricating a flat glass by processing a disc glass using a laser;
Slicing the flat glass;
Attaching the flat glass to a forming mold and applying heat thereto to form a curved glass; And
And printing the curved glass in a gravure offset manner.
The method according to claim 1,
Further comprising the step of: providing heat to the curved glass and then rapidly cooling the curved glass to strengthen the curved glass.
The method according to claim 1,
Wherein the step of skimming the flat glass is applied to an automobile which takes an outer angle of the flat glass.
The method of claim 3,
Wherein the molding of the curved glass is performed using a molding frame made of diatomaceous earth.
The method of claim 2,
And drying and then packaging the curved glass printed in the printing step.

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