Patent Description:
Due to the health benefits and luxurious image, use of gold is increasing for decorating food or consuming with food.

Previously for decoration purpose, gold leaf without any pattern is removed from base material and is simply attached or scattered to foods like ice cream, liquor or sashimi, etc..

On the other hand, a technique of floating gold on beverage in the form of gold leaf is known, for example, in <CIT>. However, this technology uses the gold film produced by sputtering and accordingly requires expensive equipment and processes.

In addition, very thin gold leaf is required to be used for food. In general, edible gold leaf has a thickness of <NUM>~<NUM>µm.

However, when the thickness of gold leaf is about <NUM>µm or thinner, the surface becomes sparse and holes are formed. On the contrary, if thicker than <NUM>µm, the cost of the product increases, which causes economic problems. A gold leaf with a thickness of about <NUM>~<NUM>µm transmits light of fluorescent lamp and moisture in air.

Meanwhile, the gold leaf fabric is attached to the base material by applying appropriate pressure and cut into a specific size for packaging. However, the bonding strength between the gold leaf and the base material is very weak. Accordingly, since there is a problem of damage or deformation during handling for processing or transportation.

On the other hand, despite of weak bonding with base material, existing gold leaf absorbs water from the surface of base material which is in contact with water. As a result, even if water permeates the surface of the base material in contact with the gold leaf for a long time, the gold leaf and the base material are not easily separated.

In addition, since the base material attached to the gold leaf is not premised on edible or cosmetic use, it may contain ingredients that are harmful to the human body.

As such, there is a problem that the existing gold leaf fabric is difficult to handle and is not suitable for use for edible or cosmetic purposes.

<CIT> is to provide a printed matter which can express easily a pattern or a letter on the surface of a liquid or the surface of a liquid matter such as water or hot water or a fluid matter containing moisture or a jellylike matter having moisture or a solid matter or transfer easily a pattern or a letter to a solid matter such as an uneven matter or a matter having a form of a curved surface and a transfer method of the pattern or the letter for which the printed matter is used.

For this purpose, <CIT> has the constitution as follows. A printed matter <NUM> is comprised of a metallic foil which is obtained by printing an image <NUM> comprised of a pattern or a letter to a water- soluble sheet medium <NUM> for example, by a blocking printing method. When the printed matter <NUM> is immersed into water so that the image <NUM> is positioned at the upper side, the sheet medium <NUM> is dissolved into the water or hot water and only the image <NUM> is raised to the surface of the water. The image <NUM> is made to stick to the transferred matter by bringing the transferred matter into contact with the image <NUM>.

Documents <CIT>, <CIT> and <CIT> may also be mentioned as technological background.

An object of the present invention is to provide a device and method for processing gold leaf that can be floated on tea, beverages, liquor, etc. and is suitable for drinking or used for beauty items and crafts.

In addition, the present invention is to provide a device and method capable of transferring or processing gold leaf fabric into a form that is easy to handle.

The gold leaf processing device of the present invention for achieving the above object is as follows. A gold leaf processing device for separating gold leaf from gold leaf fabric having first base material attached thereto, and attaching the separated gold leaf to second base material, the gold leaf processing device comprising:.

The gold leaf attaching part includes a bath for containing the aqueous solution, a tray for receiving the gold leaf fabric provided from the gold leaf fabric transfer part, and an ultrasonic generator for applying ultrasonic waves to the aqueous solution.

The tray has an L-shaped side cross-section and is configured so that the gold leaf fabric can be placed on the bottom surface. In addition, it is preferable that the tray is divided into a plurality of spaces by side walls so that a plurality of gold leaf fabrics can be processed at the same time. Also, it is preferable that slits are formed on the bottom and vertical surfaces of the tray.

The tray is preferably coupled to the tray transfer means to be movable horizontally or vertically on the bath.

An ultrasonic generator is located below the bottom of the bath and generates ultrasonic waves to separate gold leaf of gold leaf fabric from first base material.

The gold leaf fabric transfer part is a device for transferring the gold leaf fabric to the gold leaf attaching part. Also, gold leaf fabric transfer part retrieves the first base material which is separated from gold leaf fabric.

The gold leaf fabric transfer part includes a gold leaf fabric transfer unit, a fabric storage unit, and a first base material retrieving unit.

The gold leaf fabric transfer unit adsorbs the gold leaf fabric and transfers the gold leaf fabric for subsequent processing. For processing of the gold leaf fabric, the gold leaf fabric transfer unit is transferred into the bath by the gold leaf fabric transfer unit conveying means.

The gold leaf fabric storage unit is a container in which gold leaf fabric cut into a certain size is stacked and stored.

In addition, the gold leaf fabric transfer part may further include a transfer means for transferring the gold leaf fabric transfer unit between the location of the gold leaf fabric storage unit and the bath.

The first base material retrieving unit stores the first base material which is to be discarded after separation from gold leaf fabric. It is preferable that the first base material retrieving unit is disposed between the gold leaf fabric transfer part and the bath.

It is preferable that hooks protrude from the inner walls of the first base material retrieving unit.

In addition, in the present invention, a cartridge supply part may be further included for receiving the second base material in the cartridge, and for easily and continuously providing the cartridge into the process. Also, it is preferable to further include a cartridge collecting part to continuously retrieve and collect the cartridges including the second base material to which the gold leaf is attached.

In addition, the present invention provides a gold leaf processing method comprising of the following steps to achieve the above object as follows.

The gold leaf processing method comprises the steps of separating the gold leaf from the gold leaf fabric to which the first base material is attached, and attaching the separated gold leaf to the second base material by dipping the gold leaf fabric in aqueous solution to allow the gold leaf to float on the surface of the aqueous solution and allow the first base material to be separated and sink; and attaching the second base material to the gold leaf remaining in floating state on the surface of the aqueous solution, the first base material and the gold leaf being separated by ultrasonic waves.

In addition, the step of attaching the second base material to the gold leaf comprises providing the second base material to the aqueous solution, bringing the gold leaf into contact with second base material for attachment, and then raising the second base material and gold leaf together.

The second base material is dipped into the aqueous solution to the depth that a part of it is exposed on the water surface.

According to the gold leaf processing device and processing method of the present invention, it is possible to effectively produce gold leaf that can be used for drinking by floating on teas, beverages or liquors, and the like or for beauty items, craft, etc..

In addition, gold leaf fabric can be processed into a form that is easy to transport or handle.

In addition, the gold leaf fabric can be easily processed so that gold leaf can be combined with second base material harmless to the human body, allowing the applications for food or beauty.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. The same components in the accompanying drawings are indicated by the same reference numbers as possible. In addition, detailed descriptions of known functions and configurations that may obscure the subject matter of the invention will be omitted. Also, the drawings to facilitate the understanding of some of the components are shown exaggerated, omitted or schematically.

First, the configuration of the gold leaf processing device according to the present embodiment will be described.

In <FIG>, the gold leaf processing device <NUM> is a device that separates gold leaf G from the first base material B1 of the gold leaf fabric O and attaches it to the second base material B2. The gold leaf processing device <NUM> includes a gold leaf attaching part <NUM>, gold leaf fabric transfer part <NUM>, a cartridge supply part <NUM>, and a cartridge collecting part <NUM>.

Each component will be described in detail with reference to <FIG>.

The gold leaf processing device <NUM> is a device to dip the gold leaf fabric O in an aqueous solution W to allow the first base material B1 to be separated from the gold leaf G and sink, and to attach the second base material B2 to the gold leaf remaining in a floating state on the surface of the aqueous solution W.

The gold leaf attaching part <NUM> includes a bath <NUM>, a tray <NUM>, and an ultrasonic generator <NUM>.

The bath <NUM> is in the form of a container in which an aqueous solution, preferably water, can be accommodated.

In <FIG>, the tray <NUM> has an L-shaped side cross-section and includes bottom surface <NUM>, vertical surface <NUM>, and side wall <NUM>. During operation, the gold leaf fabric O is placed on the bottom surface <NUM>. In the illustrated tray <NUM>, side walls <NUM> are formed to separate the accommodation spaces so that six gold leaf fabrics O can be processed simultaneously.

In addition, a slit h is formed on the bottom surface <NUM> and the vertical surface <NUM>, which is to facilitate the retrieval and disposal of the separated first base material B1.

In <FIG>, the tray <NUM> is coupled to the tray transfer means <NUM> and is movable horizontally and vertically over the bath <NUM>. In <FIG>, the tray transfer means <NUM> comprises connection arm <NUM>, horizontal tray transfer means <NUM>, and vertical tray transfer means <NUM>. Tray connection arm <NUM> is coupled with the tray <NUM> and can be moved by horizontal tray transfer means <NUM> or vertical tray transfer means <NUM>. The horizontal tray transfer means <NUM> is coupled to the outer wall of the bath <NUM>, and the vertical tray transfer means <NUM> is coupled to the horizontal tray transfer means <NUM>. Each of the horizontal tray transfer means <NUM> and the vertical tray transfer means <NUM> may be driven by a motor. In this embodiment, the motor can be a stepping motor.

The ultrasonic generator <NUM> is located under the bath <NUM>. The ultrasonic generator <NUM> is a device that generates ultrasonic waves to separate the gold leaf G from the gold leaf fabric O.

Gold leaf fabric transfer part <NUM> is located at the side of gold leaf attaching part <NUM> and conveys the gold leaf fabric O to gold leaf attaching part <NUM>. Also, the gold leaf fabric transfer part <NUM> performs a function of retrieving the first base material B1 separated from the gold leaf fabric O.

Gold leaf fabric transfer part <NUM> comprises gold leaf fabric transfer unit <NUM>, gold leaf fabric transfer unit conveying means <NUM>, gold leaf fabric storage unit <NUM> and first base material retrieving unit <NUM>.

The gold leaf fabric transfer unit <NUM> includes an adsorption unit <NUM> and air cylinders <NUM> driving the same as shown in <FIG>. The gold leaf fabric transfer unit <NUM> sucks air from the air cylinder <NUM>. Accordingly, the gold leaf fabrics O stored in the gold leaf fabric storage unit <NUM> are sucked up one by one to the adsorption units <NUM>.

The gold leaf fabric transfer unit conveying means <NUM> transfers the gold leaf fabric O attached to the adsorption unit <NUM> of the gold leaf fabric transfer unit <NUM> into the bath <NUM> for processing. The gold leaf fabric transfer unit conveying means <NUM> is coupled to the frame <NUM> and includes rails and a motor capable of moving the gold leaf fabric transfer unit <NUM>.

The gold leaf fabric storage unit <NUM> is a container in which gold leaf fabric O cut to a predetermined size is stacked and stored. It is preferable that several fabric storage units <NUM> are arranged so that several fabrics can be processed at the same time, and in this embodiment, six fabric storage units <NUM> are arranged in parallel.

The first base material retrieving unit <NUM> has the form of open rectangular box and stores the first base materials B1 which are to be discarded after processing is finished.

L-shaped hooks <NUM> protrude from the inner wall of the first base material retrieving unit <NUM> (see <FIG>). The number of hooks <NUM> is determined to correspond to the number of spaces separated by the side wall in the tray <NUM>, the number of adsorption units <NUM> and fabric storage units <NUM>.

Cartridge supply part <NUM> is located at lateral and upper position of the gold leaf attaching part <NUM> and the gold leaf fabric transfer part <NUM>, and supplies the second base material B2 to the gold leaf fabric transfer part <NUM>.

The cartridge supply part <NUM> is an element for supplying the cartridge C including the second base material B2 to the bath <NUM> by the cartridge transfer means <NUM> to which the cartridge holder (not shown) is connected.

The cartridge collecting part <NUM> is an element for retrieving and storing the cartridge C having the second base material B2 to which the gold leaf G is attached.

The cartridge C for handling the second base material B2 will be described with reference to <FIG>.

The second base material B2 is coupled to the base plate C1 and the guide plate C2 of the cartridge C in a form in which the edge portion is pierced and fixed. In the illustrated embodiment, for coupling, the base plate C1 has pins at four corners and the guide plate C2 has coupling holes at four corners. The base plate C1 and the guide plate C2 are coupled with the second base material B2 being pinned between them.

However, since the illustrated embodiment is only one of various forms that can be implemented, the shape of the cartridge C may be appropriately modified according to the embodiment.

The second base material B2 is in the form of film containing paper or paper component and is composed of materials that are not harmful to the human body even if it is added to beverage. If only the second base material B2 is added to the aqueous solution W, handling becomes difficult, such as deformation occurs in the second base material B2 due to absorption of the aqueous solution W. Therefore, the second base material B2 is handled in a form coupled to the cartridge C.

Since the second base material B2 is to be put into food such as teas, beverages or alcoholic beverages, it is preferable to select paper material to which no harmful substances are added. For example, Korean paper, edible film, white paper or washi paper can be used as the second base material B2. However, the second base material B2 is not limited to the listed materials, and it is also possible to select a material such as non-woven fabric, pure cotton, wood, PET film, and metal foil as the second base material B2.

In addition, it is preferable that coating is formed on the surface of the second base material B2. Also, it is preferable to increase the surface roughness of the second base material B2 through laser irradiation to facilitate bonding with the gold leaf G.

The operation process of this embodiment will be described as follows.

The tray <NUM> is positioned so that the surface of the aqueous solution W contacts with the gold leaf fabric O, and the ultrasonic generator <NUM> is operated to separate the first base material B1 from the gold leaf G. Then put the cartridge C containing the second base material B2 into the bath <NUM>. And make second base material B2 contact with the gold leaf G which is floating on the surface of the aqueous solution W after separation. After contact, by raising the cartridge C, the gold leaf G is also raised with the second base material B2 while being attached to the second base material B2, and then the attachment process is completed. Then, the cartridge collecting part <NUM> retrieves the gold leaf on which the second base material B2 is attached, and the cartridge supply part <NUM> supplies the next second base material B2 to the gold leaf attaching part <NUM>.

Hereinafter, the gold leaf processing method according to this embodiment will be described in more detail.

The gold leaf processing method separates gold leaf G from the gold leaf fabric O to which the first base material B1 is attached, and attaching the separated gold leaf G to the second base material B2, comprising: dipping the gold leaf fabric O in aqueous solution W to allow the gold leaf G to float on the surface of the aqueous solution and allow the first base material B1 to be separated and sink; and attaching the second base material B2 to the gold leaf G remaining in a floating state on the surface of the aqueous solution W.

First, a step of transferring the gold leaf fabric O from the gold leaf fabric transfer part <NUM> to the gold leaf attaching part <NUM> is performed.

As shown in <FIG>, the gold leaf fabric O is stored in a stacked state in the gold leaf fabric storage unit <NUM>. For reference, the term gold leaf fabric used in the present disclosure means that a fabric cut to a certain size by processing the original gold leaf fabric made a gold leaf fabric manufacturer.

Here, the gold leaf processing device <NUM> of the present embodiment is a form of processing six gold leaf fabrics O in parallel and has six gold leaf fabric storage unit <NUM>. Accordingly, six gold leaf fabric transfer units <NUM> are also provided. However, this is only one of the possible embodiments, and the number of each component may be appropriately increased or decreased according to the number of gold leaf fabrics O to be processed at the same time according to the implementer.

The gold leaf fabric O located at the top of the gold leaf fabrics O stored in the gold leaf fabric storage unit <NUM> is picked up by the gold leaf fabric transfer unit <NUM> by adsorption.

Since the gold leaf fabric O is attached to the gold leaf fabric transfer unit <NUM> by air suction, more than one gold leaf fabric O may be attached in some cases. In order to prevent such malfunction, the gold leaf fabric transfer unit <NUM> adsorbs the gold leaf fabric O and rises to a certain height. Then a minute vibration is applied to the gold leaf fabric transfer unit <NUM> before leaving the gold leaf fabric storage unit <NUM> and accordingly gold leaf fabric O that may have been additionally adsorbed can fall off.

The adsorbed gold leaf fabric O is located at the top of the tray <NUM> by moving the gold leaf fabric transfer unit <NUM> or the tray <NUM>. In this state, the gold leaf fabric transfer unit <NUM> is lowered or the tray <NUM> is raised to be close to each other, and the operation of the air cylinder <NUM> is stopped to release adsorption. Then, the gold leaf fabric O is positioned on the bottom <NUM> of the tray <NUM>.

At this time, the movement of the tray <NUM> is made by the tray transfer means <NUM>, and the movement of the gold leaf fabric transfer unit <NUM> is made by gold leaf fabric transfer unit conveying means <NUM>. The driving method of each conveying means is not particularly limited, but in this embodiment, a method of moving along rails by driving stepping motor is employed.

The relative position of the gold leaf fabric transfer unit <NUM> and the tray <NUM> is controlled by an encoder built in the stepping motor with the control precision of <NUM>. Therefore, the gold leaf fabric O placed on the tray <NUM> by releasing of adsorption from the gold leaf fabric transfer unit <NUM> has its end portion protruded from the end portion of the tray <NUM> by about <NUM> to <NUM> as shown in <FIG>.

Next, the tray <NUM> on which the gold leaf fabric O is placed is horizontally transferred to one end of the bath <NUM> and is stopped at a pre-programmed position, and then is descended into the bath <NUM> and is dipped.

The vertical or horizontal movement of the tray <NUM> in the bath is controlled to be quietly performed at a constant speed. Accordingly, since the fluctuation of water is prevented, the gold leaf fabric O on the tray <NUM> does not fall off or sink in water.

The descent of the tray <NUM> is programmed so that the gold leaf fabric O floats in contact with the water surface and the tray <NUM> itself stops at a position directly below the water surface. Therefore, gold leaf fabric O maintains a floating state on the water surface closely above the tray <NUM>, while being separated slightly from the bottom of the tray <NUM>.

This position control is performed by an encoder built in the stepping motor driving the tray transfer means <NUM>. Since the encoder is programmed to control the motor movement with the precision of <NUM> level, it is possible to control the lowering position of the tray <NUM> in consideration of the predetermined level of the water surface. In addition, the level of water surface in the bath <NUM> is measured by a water level sensor, and when the level change occurs due to evaporation of water or the like, the water is supplied to maintain a constant water level. Therefore, the dipping depth of the tray <NUM> can be precisely controlled.

In this state, the process of separating the gold leaf G and the first base material B1 constituting the gold leaf fabric O is performed by ultrasonic waves.

That is, ultrasonic vibration is applied to the bath <NUM> by the ultrasonic generator <NUM> located under the bath <NUM>, and as a result, the first base material B1 and the gold leaf G are separated according to the principle of the ultrasonic generator.

Specifically, the ultrasonic generator can be a device that removes contaminants from an object by applying vibrations of <NUM>, <NUM>, <NUM> or more by means of an ultrasonic vibrator using water as a medium. The ultrasonic generator operates on the principle of exfoliating and removing contaminants when fine bubbles generated by decrease and increase of pressure by the ultrasonic vibrator overcome the surface tension of the solution, shrink and explode and generate a large shock wave.

A process in which this principle is applied to the present invention will be described. Water penetrates between the first base material B1 and the gold leaf G of the gold leaf fabric O in contact with the water surface. However, in this state, as in the prior art, the gold leaf G and the first base material B1 remain unseparated. When ultrasonic vibration is applied, as shown in <FIG>, the water penetrated between the first base material B1 and the gold leaf G vibrates finely to generate air bubbles, and as a result, the base material B1 is separated from the gold leaf G.

If the temperature of water is maintained at <NUM>~<NUM>, gold leaf can be separated more quickly.

The separated first base material B1 is settled down by its own weight as shown <FIG> and is placed on the surface of the tray <NUM>. On the other hand, the gold leaf G maintains a state of floating on the water surface above the tray <NUM> because its surface area is large and the weight is light.

After the gold leaf G is separated in this way, the operation of combining the gold leaf G with the second base material B2 is then performed.

First, the cartridge C to which the second base material B2 is attached is put into the aqueous solution W. The cartridge C may be put into the aqueous solution W before the tray <NUM> is put into the bath <NUM>. This is preferable because the fluctuation of the water surface during the input of the cartridge C is not transmitted to the separated gold leaf G so that the gold leaf G does not sink.

The cartridge C is attached to the cartridge transfer arm (not shown) connected to the cartridge transfer means <NUM> and introduced into the bath <NUM>. Specifically, the cartridges C are stored in cartridge supply part <NUM> which is located at the side upper position of gold leaf attaching part <NUM> and gold leaf fabric transfer part <NUM>, and one of the cartridges C is withdrawn from the cartridge supply part <NUM> by a constant pitch by cartridge transfer means <NUM>. Then, the cartridge C is put into the bath <NUM> by a downward motion of the cartridge transfer means <NUM>. The detailed configuration and process for transferring the cartridge C may be performed using a known technology, and thus the explanation will be omitted.

At this time, the cartridge C is put into the bath <NUM> at a depth at which the portion of the second base material B2 to which the gold leaf G will be attached is dipped in the bath, and this depth is determined by motor and encoder which operates the cartridge transfer means <NUM>.

The dipping angle of the cartridge C is about <NUM>° to the water surface in this embodiment, but the angle is not limited to this angle and may be dipped at an inclined angle.

In this state, as shown in <FIG>, by tray transfer means <NUM>, the tray <NUM> is moved horizontally toward the cartridge C while maintaining a state in which the gold leaf G floats on the water surface. In the drawings, in order to facilitate explanation, the guide plate C2 is omitted from the side of the cartridge C so that the side of the second base material B2 is exposed.

When the tray <NUM> reaches to a position at which the gold leaf G protruded from the tray <NUM> contact the surface of the second base material B2, the movement of the tray <NUM> is controlled to stop. Since the position of the tray <NUM> before transport and the position of the cartridge C dipped into the bath <NUM> are set in advance, the transport distance of the tray <NUM> can be precisely controlled.

After the tip of the gold leaf G contacts the surface of the second base material B2, the cartridge C to which the second base material B2 is attached is gradually raised as shown in <FIG>. At this time, since the second base material B2 is in a wet state, the gold leaf G of which tip is in contact with the second base material B2 is also raised together with the second base material B2. As gold is a metal having excellent ductility, and in the present invention and is the form of very thin foil, it naturally deforms as the second base material B2 rises. That is, the gold leaf G is folded to vertical direction from horizontally lying state on the water surface and rises while being attached to the surface of the base material B2.

When the cartridge C continues to rise, the gold leaf G is entirely attached to the second base material B2 by the action of water. As described above, the cartridge C to which the gold leaf G is attached to the second base material B2 is shown in <FIG>.

The cartridge C to which the gold leaf G and the second base B2 are attached continues to rise and is accommodated in the cartridge collecting part <NUM>. Thereafter, the cartridge C undergoes drying process by infrared rays and hot air, and finally, an object of combined gold leaf G and second base material B2 is obtained.

The first base material B1 separated from the gold leaf G by ultrasonic wave absorbs the aqueous solution W and sink on the bottom surface <NUM> of tray <NUM> by its own weight. This may be an obstacle for the next process. Therefore, it is necessary to retrieve the first base material B1.

To this end, the first base material retrieving unit <NUM> functions to retrieve and discharge the first base material B1 left on the tray <NUM>, and the process is shown in <FIG>.

In the drawing, the first base material retrieving unit <NUM> has the shape of a square box including L-shaped hook <NUM>. Meanwhile, slits h are formed in the tray <NUM>.

As shown in <FIG>, after the cartridge C is raised, the tray <NUM> moves toward the first base material retrieving unit <NUM> and the hook <NUM> is inserted to the slit h of the tray <NUM>. Accordingly, the first base material B1 placed on the bottom surface <NUM> of the tray <NUM> is caught by the hook <NUM> of the first base material retrieving unit <NUM> and is prevented from moving.

Therefore, the first base material B1 is removed from the tray <NUM> and placed on the hook <NUM> as shown in <FIG>. Since the hook <NUM> has the shape of wire that is thinner than the area of the first base material B1, the first base material B1 does not remain on the hook <NUM> and falls to be accommodated in the retrieving unit <NUM>.

In order to facilitate the fall of the first base material B1, vibration may be applied by connecting a motor to the first base material retrieving unit <NUM> or the hook <NUM>.

As such, when one cycle of the entire process is completed, each component is transferred to its original position to perform the next operation. Accordingly, a process of attaching the gold leaf G and the second base material B2 may be continuously performed.

A specific pattern can be formed on the produced gold leaf. Then the gold leaf is combined with a carrier and packed for sale.

<FIG> is a photograph showing a usage example of the gold leaf produced according to an embodiment of the present invention.

Claim 1:
A gold leaf processing device (<NUM>) for separating gold leaf (G) from gold leaf fabric (O) having first base material (B1) attached thereto, and attaching the separated gold leaf (G) to second base material (B2), the gold leaf processing device (<NUM>) comprising:
a gold leaf attaching part (<NUM>) which dips the gold leaf fabric (O) in an aqueous solution (W) to allow the first base material (B1) to be separated from the gold leaf (G) and sink, and attaches the second base material (B2) to the gold leaf (G) remaining in a floating state on the surface of the aqueous solution (W); and
a gold leaf fabric transfer part (<NUM>) which transfers the gold leaf fabric (O) to the gold leaf attaching part (<NUM>);
wherein the gold leaf attaching part (<NUM>) comprises:
a bath (<NUM>) for containing an aqueous solution (W);
a tray (<NUM>) for receiving the gold leaf fabric (O) provided from the gold leaf fabric transfer part (<NUM>); and
an ultrasonic generator (<NUM>) for applying ultrasonic waves to the aqueous solution (W).