JP7383401B2 - Method for producing arbitrarily dyed plants, apparatus for producing arbitrarily dyed plants, and vacuum chamber - Google Patents

Description

The present invention relates to a method for producing arbitrarily dyed plants, an apparatus for producing arbitrarily dyed plants, and a vacuum chamber for producing arbitrarily dyed plants in which flower petals and the like are colored so as to enjoy colors not found in the plants themselves, including fresh flowers, branches, and leaves. Here, arbitrarily dyed plants mean plants dyed in any color.

Preserved flowers are popular as optionally dyed plants whose petals are colored so that you can enjoy colors that are not available in fresh flowers. Preserved flowers are manufactured through the following steps: decolorizing fresh flowers with a decolorizing solution, coloring the fresh flowers with a dyeing solution, and drying the colored fresh flowers.

The main component of the decolorizing solution is alcohol such as ethanol. Fresh flowers are decolorized by soaking them in a decolorizing solution for 5 to 6 hours. The staining solution is a mixture of glycerin, water, and any color pigment, and can be made into any color. The bleached fresh flowers are then soaked in a dye solution for 12 to 24 hours to be colored. The colored fresh flowers are dried in a well-ventilated place for about three days to complete the preserved flowers.

Patent Document 1 describes a preserved flower manufacturing method that allows each of a plurality of petals to be easily colored with a different color. In the preserved flower manufacturing method described in Patent Document 1, prior to coloring the fresh flower, the stem is divided into a plurality of pieces along the axial direction. Each end of the divided stem is immersed in a different colored dye solution. In this way, each petal is colored a different color.

Patent No. 6058462

Preserved flowers, including the method for producing preserved flowers described in Patent Document 1, are colored by a dyeing solution oozing out onto the surface of the petals over a period of, for example, 12 hours or more. Therefore, traditional methods of producing preserved flowers have poor productivity. This is one reason why preserved flowers are so expensive. In addition, fresh flowers with petals that are too thick are not suitable for arbitrarily dyed plants such as preserved flowers, as the dye solution does not easily ooze out onto the surface of the petals, which not only takes time to color, but also prevents coloring to the desired color. becomes. As mentioned above, arbitrarily dyed plants refer to plants dyed in any color. Preserved flowers are a type of arbitrarily dyed plants.

An object of the present invention is to provide a method for producing arbitrarily dyed plants and an apparatus for producing arbitrarily dyed plants, which enable coloring of various fresh flowers in a short time.
Another object of the present invention is to provide a vacuum chamber that can be used in various devices including a device for producing arbitrarily dyed plants, and is difficult to deform.

The method for producing arbitrarily dyed plants according to the present invention includes the steps of soaking the plant before bleaching in a bleaching solution stored in a container, soaking the plant after bleaching in the dyeing solution stored in the container, and vacuuming. a step of setting the container in a vacuum chamber where the container is placed, and after soaking the plant before decolorization in the decolorization liquid stored in the set container, or after decolorization in the dyeing liquid stored in the set container. After pickling the plants, the method includes a step of creating a high vacuum in the vacuum chamber.

The apparatus for producing arbitrarily dyed plants according to the present invention includes a vacuum chamber in which a container is set for storing a decolorizing solution in which plants are soaked before bleaching, or a dyeing solution in which plants are soaked after bleaching; Evacuation means for creating a high vacuum atmosphere.

In the apparatus for producing optionally dyed plants, the vacuum chamber includes a bottom plate, a side plate that stands up on the outer peripheral edge of the bottom plate and has a top opening, and a top plate that opens and closes the top opening. .
In this case, it is preferable that the vacuum chamber includes a support member for supporting the top plate.

The vacuum chamber according to the present invention is a vacuum chamber having a high vacuum atmosphere, and includes a bottom plate, a side plate erected on the outer periphery of the bottom plate and having a top opening, and a top plate that opens and closes the top opening. The device includes a plate and a supporting member that supports the top plate with the upper opening closed.

According to the present invention, it is possible to provide a method for producing arbitrarily dyed plants and an apparatus for producing arbitrarily dyed plants that enable coloring of various plants in a short time.
Further, according to the present invention, it is possible to provide a vacuum chamber that is applicable not only to an apparatus for producing optionally dyed plants but also to apparatuses for various purposes, and is difficult to deform.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing an embodiment of an optionally dyed plant manufacturing apparatus according to the present invention, including a vacuum chamber according to the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a vacuum chamber according to the present invention, which is included in an optionally dyed plant manufacturing apparatus according to the present invention. One embodiment of the clamper attached to the vacuum chamber according to the present invention, (a) is a front view showing a state in which the top plate is open, and (b) is a front view showing a state in which the top plate is closed. It is a diagram.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a method for producing optionally dyed plants, an apparatus for producing arbitrarily dyed plants, and a vacuum chamber according to the present invention will be described with reference to the drawings. In one embodiment, preserved flowers will be described as an example of arbitrarily dyed plants. Preserved flowers are cut flowers whose petals are colored so that you can enjoy colors not found in fresh flowers. Fresh flowers have multiple petals attached to the tip or middle of the flower axis, such as a stem or branch, via a calyx.

Preserved flowers are manufactured through processes such as bleaching and coloring fresh flowers whose flower stalks have been cut short. In the process of decolorizing fresh flowers, a decolorizing liquid is used. A dyeing solution is used in the process of coloring fresh flowers. The decolorizing solution and the dyeing solution are stored in a container 131 (see FIG. 1) that is large enough to hold, for example, at least two to three fresh flowers. The top surface of the container 131 is covered with a breathable lid (not shown) to prevent fresh flowers from floating up.

As the decolorizing liquid, for example, ethanol is used. A dye solution is made by mixing glycerin, water, and a pigment of any color. Fresh flowers are soaked in a bleaching solution or dyeing solution, and then the petals and flower stems are bleached and colored using preserved flower production equipment.

As shown in FIG. 1, the apparatus 1 for producing arbitrarily dyed plants includes a vacuum chamber (hereinafter referred to as "chamber") 11 in which a plurality of containers 131 (two containers are shown in FIG. 1) are set; A vacuum evacuation means 12 is provided to create a high vacuum atmosphere inside. High vacuum refers to a state where the pressure is lower than the surroundings, preferably in the range of 10 ⁻⁵ Pa to 0.1 Pa.

As shown in FIGS. 2 and 3, the chamber 11 includes a pair of flat plates facing each other (for example, a bottom plate 111 and a top plate 112), and a side plate 113 erected on the periphery of the bottom plate 111. . The bottom plate 111 and the top plate 112 are, for example, formed in a square shape. The side plate 113 is formed in a rectangular shape. The short side of the side plate 113 is, for example, half the length of the long side. If the material (manufacturing member) forming the bottom plate 111 or the top plate 112 is a square flat plate, the side plate 113 can be obtained by dividing this flat plate into two, which increases manufacturing costs by not increasing the number of manufacturing members. You can prevent it from happening. If the bottom plate 111 is square, the side plate 113 is naturally composed of four pieces.

The four side plates 113 erected on the periphery of the bottom plate 111 are formed into a square shape with the edges of adjacent side plates 113 joined to each other and having an upper opening 110a. The bottom plate 111, each side plate 113, and each side plate 113 are welded together so that the inside of the chamber 11 is airtight. The bottom plate 111 and side plates 113 welded in a square shape in this manner will be referred to as the "main body 110" hereinafter. The bottom plate 111, the top plate 112, and the side plates 113 are made of stainless steel, for example.

The top plate 112 opens and closes the top opening 110a of the main body 110 by being raised and lowered by a load lifting device (described in detail later) 20. A packing (not shown) having a rectangular shape in plan view is fixed to the lower surface of the top plate 112 along the outer periphery. When the top plate 112 is lowered and the opening on the top surface of the main body 110 is closed, the packing is attached to the side plate 113 by tightening the clamper 140 (not shown in FIGS. 1 and 2) as shown in FIG. It comes into close contact with the upper end surface, making the inside of the chamber 11 airtight.

The clamper 140 is attached to the chamber 11 and includes a fixing member 141, a pressing member 142, a shaft portion 143, and a fastening member 144. In FIG. 3, the clamper 140 is shown only on a pair of opposing side plates 113, but in reality, it is provided on four side plates 113. Further, each side plate may be provided with one clamper 140, but it is preferable that a plurality of clampers 140 be provided.

The fixing member 141 includes a base (not numbered) fixed to the upper end of the side plate 113, and a projecting portion (not numbered) projecting outward from the upper edge of the base. The base may be fixed to the side plate 113 by welding, adhesive, or the like, or may be detachably fixed by a magnet or the like. The holding member 142 is connected to the protruding portion of the fixing member 141 by a shaft portion 143, and has two positions: a downward position facing the fixing member 141, and a sideways position overlapping the top surface of the top plate 112 with the top opening of the main body 110 closed. Change your posture. The fastening member 144 pinches the pressing member 142 and the protruding portion of the fixing member 141 so that the pressing member 142 maintains a state in which the pressing member 142 is in a horizontal position and pressing the top plate 112.

In order to prevent the top plate 112 from bending downward due to the weight of the top plate 112 or the vacuum inside the chamber 11 when the top plate 112 closes the top opening 110a of the main body 110, there is a hole in the center of the bottom plate 111. A support member (hereinafter referred to as a "stay") 114 serving as a support is erected. The top of the stay 114 supports the lower surface of the closed top plate 112. The stay 114 may have a predetermined length (height) so that the top plate 112 does not bend, or may have a short length so that the top plate 112 bends slightly. In other words, the length of the stay 114 is not required to have such strict precision that it causes an increase in cost.

An exhaust port 115 for evacuation and an air supply port 116 for breaking the vacuum are provided at an arbitrary position on one side plate 113. In FIGS. 1 and 2, the exhaust port 115 and the air supply port 116 are provided at different positions (the positional relationship does not correspond), but they may be located at either position, and may be located at different positions on the side plate 113. may be provided. The evacuation means 12 is connected to the exhaust port 115 .

The evacuation means 12 includes a vacuum generator 121 with a vacuum ejector, an exhaust pipe 122 connecting the vacuum generator 121 and the exhaust port 115 of the chamber 11, and a vacuum gauge 123 attached in the middle of the exhaust pipe 122. and an exhaust opening/closing valve 124. As the vacuum generator 121, for example, a vacuum pump is used.

An air supply pipe 125 is connected to the air supply port 116 . An air supply opening/closing valve 126 is connected to the terminal of the air supply pipe 125 . The air supply opening/closing valve 126 is normally closed, and is opened when the vacuum state in the chamber 11 is released to break the vacuum. A vacuum switch 127 is connected between the air supply on-off valve 126 and the chamber. Vacuum switch 127 and vacuum generator 121 are connected by signal line 128. The vacuum generator 121 is automatically operated by a vacuum switch 127 connected by a signal line 128. That is, the vacuum switch 127 is turned on when the degree of vacuum in the chamber 11 becomes lower than the set value A due to vacuum breakdown due to leakage, and is turned off when the vacuum becomes higher than the set value B. Set value A and set value B are determined during the driving process.

On the bottom plate 111 of the main body 110, a container 131 that stores a decoloring liquid in the decoloring process is set, and further, a container 131 that stores a dyeing liquid in the dyeing process is set.

The apparatus 1 for producing arbitrarily dyed plants configured as described above is installed in a work room 2. As shown in FIG. 1, a fixed load lifting device 20 is installed in the work room 2. The load lifting device 20 is a winch, and includes a main body 211 fixed to the ceiling 3 of the work room 2, and a wire or chain that is wound inside the main body 211 and pulled out. It includes a cable-like body 212 and a hook 214 attached to the lower end of the cable-like body 212.

When the cable-like body 212 is pulled out from inside the main body 211 or unwound, the hook 214 is lowered or raised. A hanging piece 117 like an eye bolt that is hooked onto a hook 214 is attached to the upper surface of the top plate 112 of the chamber 11 . Therefore, the top plate 112 of the chamber 11 is raised above the main body 110 by operating the load lifting device 20, or lowered so as to close the top opening 110a.

Here, a method for manufacturing preserved flowers using such an arbitrarily dyed plant manufacturing apparatus 1 will be described. First, the top plate 112 of the chamber 11 is placed in a state where the top opening 110a of the main body 110 is opened, and the container 131 that does not store the decolorizing liquid L1 is set in the chamber 11. At this time, as shown in FIG. 3(a), the fastening member 144 of the clamper 140 is removed, and the pressing member 142 is in a downward position.

Next, the decolorizing liquid L1 is stored in the container 131. Fresh flowers F1 before bleaching are soaked in a bleaching solution L1. However, after the fresh flower F1 before bleaching is placed in the container 131, the bleaching liquid L1 may be stored in the container 131. In any case, the top surface of the container 131 is covered with a breathable lid.

Next, using the load lifting device 20, the top plate 112 hooked on the hook 214 is lowered, and the top plate 112 closes the top opening 110a of the main body 110. Then, as shown in FIG. 3B, the holding member 142 of the clamper 140 is placed in a horizontal position, and the holding member 142 is pressed against the upper surface of the top plate 112 by the fastening member 144. At this time, the top plate 112 and the main body 110 are brought into close contact with each other without any gaps due to the packing. The center of the lower surface of the top plate 112 hits the top of the stay 114, so that it does not bend downward.

Next, the vacuum generator 121 of the vacuum evacuation means 12 is activated to evacuate the chamber 11 . The chamber 11 has a high vacuum atmosphere because the main body 110 is made airtight by welding and the top plate 112 is in close contact with the main body 110 by packing. A vacuum gauge 123 monitors whether the chamber 11 is at a predetermined high vacuum. A predetermined high vacuum state is maintained in the chamber 11 by automatically operating the vacuum generator 121 using the vacuum switch 127.

In the chamber 11 having a high vacuum atmosphere in this way, the unbleached fresh flower F1 immersed in the bleaching liquid L1 is bleached as water and pigments escape. By creating a high vacuum atmosphere in the chamber 11, the fresh flowers F1 before bleaching are bleached in a shorter time than when immersed in a bleaching solution in an atmosphere of atmospheric pressure, for example, 1 atmosphere. Since the container 131 is covered with a lid, the fresh flowers F1 before bleaching do not stand out from the bleaching liquid. Since the lid is breathable, it does not become an obstacle to vacuuming the fresh flower F1 before bleaching.

When the fresh flower F1 before bleaching is bleached in this way, the vacuum generator 121 is stopped and the vacuum is broken. That is, by opening the air supply opening/closing valve 126 connected to the air supply pipe 125, air in the work chamber 2 is caused to flow into the chamber 11 from the air supply pipe 125. Then, the fastening member 144 of the clamper 140 is removed, and the pressing member 142 in the horizontal position is turned downward, so that the pressing member 142 does not press the top plate 112. Next, the chamber 11 is opened by operating the load lifting device 20 and lifting the top plate 112 above the main body 110.

Next, the fresh flower F2 after decolorization is taken out from the chamber 11. After removing the lid covering the container 131, the bleached fresh flower F2 may be removed from the bleaching liquid L1, or the bleached fresh flower F2, which is still immersed in the bleaching liquid L1, can be removed together with the container 131 from inside the chamber 11. You can take it out.

Next, the fresh flower F2 after decolorization is dyed with the staining solution L2. Therefore, with the top plate 112 of the chamber 11 opening the top opening 110a of the main body 110, the container 131 that does not store the staining liquid L2 is set in the chamber 11.

The staining liquid L2 is stored in the container 131. Fresh flowers F2 after decolorization are soaked in the dyeing solution L2. However, after the fresh flower F2 after decolorization is placed in the container 131, the dyeing liquid L2 may be stored in the container 131. In any case, the top surface of the container 131 is covered with a breathable lid.

Next, the top opening 110a of the main body 110 is closed by the top plate 112. Next, the inside of the chamber 11 is brought into a high vacuum atmosphere by the vacuum evacuation means 12. Even if the inside of the chamber 11 is in a high vacuum atmosphere, the top of the stay 114 hits the top plate 112, so that the top plate 112 does not bend downward.

The decolorized fresh flower F2 immersed in the dyeing solution L2 in the container 131 in the chamber 11 is colored by the dyeing solution L2. Due to the high vacuum atmosphere in the chamber 11, the staining liquid L2 permeates into the decolorized fresh flower F2 in, for example, 1 to 2 hours. In this way, fresh flowers can be colored in any desired color.

When the fresh flower F2 after decolorization is colored in this way, the vacuum generator 121 is stopped and the vacuum is broken. After the top plate 112 of the chamber 11 is opened, colored fresh flowers (not numbered) are taken out from inside the chamber 11. After removing the lid covering the container 131, the colored fresh flowers may be removed from the dyeing liquid L2, or the colored fresh flowers soaked in the dyeing liquid L2 may be removed from the chamber 11 along with the container 131. Good too.

The colored fresh flowers are dried in a well-ventilated place for about three days to complete the preserved flowers.

Although one embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and modifications and improvements within the scope that can achieve the purpose of the present invention are included in the present invention. be.

For example, the chamber 11 is not limited to a combination of a square-shaped main body 110 and a square-shaped top plate 112, but may be a combination of a bottomed cylindrical main body 110 and a disc-shaped top plate 112. good. By forming the bottom plate 111 and the top plate 112 of the main body 110 into dome-shaped mirror plates, the stay 114 can be omitted.

When the stay 114 is provided, the stay 114 is not limited to a pillar-like one, and may be a beam spanning from one side plate 113 to the other side plate 113, or may be a beam suspended from the top plate 112. good. Even if the top plate 112 and the bottom plate 111 are square, the apparatus 1 for producing optionally dyed plants does not need to include the stay 114 as long as the rigidity is large.

The chamber 11 may be configured such that one side plate 113 opens and closes without the top plate 112 moving up and down. In this case, the supporting member may be sandwiched between one side plate 113 that opens and closes and a side plate 113 that faces this side plate 113. By doing so, even if the inside of the chamber 11 is set to a high vacuum atmosphere, the side plate 113 that opens and closes can be prevented from being significantly bent inward.

In the embodiment, after the container 131 was set in the chamber 11, the decolorizing liquid L1 and the staining liquid L2 were stored in the container 131. However, a container 131 storing the decolorizing liquid L1 and the staining liquid L2 may be set inside the chamber 11.

In the embodiment, the decolorizing liquid L1 and the staining liquid L2 are stored in all the containers 131 in the chamber 11. However, when the time for decoloring and the time for coloring are the same, the decolorizing liquid L1 is left stored in one container 131 in the chamber 11, and the staining liquid L2 is stored in the other container 131. You can leave it as is. In this case, the decolorizing liquid L1 and the staining liquid L2 can be reused until they deteriorate.

In the embodiment, after bleaching the fresh flower F1 before bleaching, the fresh flower F2 after bleaching was colored. However, this arbitrarily dyed plant manufacturing apparatus 1 may be used only for bleaching fresh flowers F1 before bleaching, or only for coloring fresh flowers F2 after bleaching.

In the embodiment, preserved flowers were produced from fresh flowers F1 before bleaching and fresh flowers F2 after bleaching. However, the apparatus 1 for producing arbitrarily dyed plants and the method for producing arbitrarily dyed plants can color not only fresh flowers F1 before bleaching and fresh flowers F2 after bleaching, but also various plants including branches and leaves.

In the embodiment, chamber 11 was used to produce preserved flowers. However, the chamber 11 can be used in various devices that require evacuation (for example, devices that manufacture or store foods, medicines, etc.) other than devices that manufacture preserved flowers.

In summary, the method for producing arbitrarily dyed plants and the apparatus 1 for producing arbitrarily dyed plants to which the present invention is applied need only have the following configuration, and can take various embodiments.

That is, the method for producing arbitrarily dyed plants according to the present invention includes:
A step of soaking the plant F1 before bleaching in the bleaching liquid L1 stored in the container 131;
immersing the decolorized plant F2 in the dyeing solution L2 stored in the container 131;
a step of setting the container 131 in the vacuum chamber 11 to be evacuated;
After soaking the plant F1 before bleaching in the bleaching liquid L1 stored in the container 131 set, or after soaking the plant F2 after bleaching in the dyeing solution L2 stored in the container 131 set, a step of creating a high vacuum in the vacuum chamber 11;
Contains.

According to this method for producing arbitrarily dyed plants, by immersing the plant F1 before bleaching in the decolorizing liquid L1, components such as polyphenols contained in the plant F1 before bleaching can be extracted and bleached. From the decolorized plant F2, it is possible not only to produce arbitrarily dyed plants colored in a desired color, but also to maintain the beauty of the arbitrarily dyed plants for a long period of time.

Further, according to this method for producing arbitrarily dyed plants, a container 131 is set in the vacuum chamber 11 for storing a decolorizing solution L1 in which the plant F1 before bleaching is soaked, or a dyeing solution L2 in which the plant F2 after bleaching is soaked. By creating a high vacuum inside the vacuum chamber 11, the unbleached plant F1 soaked in the bleaching solution L1 can be bleached in a short time, or the bleached plant F2 soaked in the dyeing solution L2 can be bleached. It can be colored in a short time.

The apparatus for producing arbitrarily dyed plants according to the present invention includes:
A vacuum chamber 11 in which a container 131 is set for storing a decolorizing solution L1 in which the plant F1 before bleaching is soaked or a dyeing solution L2 in which the plant F2 after bleaching is soaked;
evacuation means 12 for creating a high vacuum atmosphere in the vacuum chamber 11;
We are prepared.

According to this arbitrarily dyed plant manufacturing apparatus, a container 131 for storing the decolorizing liquid L1 in which the plant F1 before decolorizing is soaked, or a container 131 for storing the dyeing liquid L2 in which the plant F2 after decolorizing is soaked. The inside of the vacuum chamber 11 to be set is brought to a high vacuum by the vacuum evacuation means 12.

In the apparatus for producing arbitrarily dyed plants according to the present invention,
The vacuum chamber 11 includes a bottom plate 111, a side plate 113 that stands upright on the outer peripheral edge of the bottom plate 111 and has a top opening 110a, and a top plate 112 that opens and closes the top opening 110a.

According to this apparatus for producing arbitrarily dyed plants, the chamber 11 can be easily produced using the bottom plate 111, the side plates 113, and the top plate 112.

In the apparatus for producing arbitrarily dyed plants according to the present invention,
The vacuum chamber 11 may include a support member 114 for supporting the top plate.

According to this apparatus for producing arbitrarily dyed plants, the interior of the chamber 11 is kept in a high vacuum atmosphere, so that even if a stress that causes the bottom plate 111 and the top plate 112 to bend inward is applied, the supporting members can 114 is sandwiched between the bottom plate 111 and the top plate 112, so that the bottom plate 111 and the top plate 112 can be prevented from bending inward (making it difficult to deform). Therefore, even if the inside of the chamber 11 is repeatedly evacuated and not evacuated, the bottom plate 111 and the top plate 112 do not get fatigued, and their lifespan can be extended.

The vacuum chamber 11 according to the present invention includes:
A vacuum chamber 11 having a high vacuum atmosphere,
A bottom plate 111, a side plate 113 that stands up on the outer peripheral edge of the bottom plate 111 and has a top opening 110a, a top plate 112 that opens and closes the top opening 110a, and a top plate 112 that closes the top opening 110a. A support member 114 is provided.

According to the vacuum chamber 11 according to the present invention, since the interior of the chamber 11 is in a high vacuum atmosphere, even if a stress that causes the bottom plate 111 and the top plate 112 to bend inward is applied, the supporting member 114 is sandwiched between the bottom plate 111 and the top plate 112, so that the bottom plate 111 and the top plate 112 can be prevented from bending inward (making it difficult to deform). Therefore, even if the inside of the vacuum chamber 11 is repeatedly evacuated and not evacuated, the bottom plate 111 and the top plate 112 do not get fatigued, and their lifespan can be extended. The chamber 11 can be used in various devices that require evacuation (for example, devices that manufacture or store foods, medicines, etc.) in addition to devices that manufacture preserved flowers.

1... Apparatus for producing arbitrarily dyed plants 11... Vacuum chamber 110a for producing arbitrarily dyed plants... Top opening 111... Bottom plate (flat plate)
112...Top plate (flat plate)
113... Side plate 114... Supporting member (stay)
12...Vacuum pulling means 131...Container 2...Working room F1...Fresh flowers (plants) before bleaching
F2... Fresh flowers (plants) after bleaching
L1...Decolorizing solution L2...Staining solution

Claims (2)

A step of soaking the plant before bleaching in a bleaching solution stored in a container;
A step of soaking the decolorized plant in a dyeing solution stored in a container;
A vacuum chamber to be evacuated, comprising: a bottom plate; a side plate standing upright on the outer periphery of the bottom plate and having a top opening; a top plate for opening and closing the top opening; and a protrusion for supporting the top plate. a step of setting the container in a vacuum chamber comprising a support member;
After immersing a plant before bleaching in the decolorizing liquid stored in the set container, or after immersing a plant after bleaching in the dyeing liquid stored in the set container, the inside of the vacuum chamber ^is After decolorizing in a vacuum of ⁵ Pa to 0.1 Pa, coloring in a vacuum of 10 ⁻⁵ Pa to 0.1 Pa;
A method for producing optionally dyed plants comprising: A base plate, a side plate erected on the outer periphery of the bottom plate and provided with a top opening, a top plate for opening and closing the top opening, and a supporting member for supporting the top plate, a vacuum chamber in which a container is set for storing a bleaching solution in which the plants are soaked, or a dyeing solution in which the plants are soaked after bleaching;
evacuation means for creating an atmosphere of 10 ⁻⁵ Pa to 0.1 Pa in the vacuum chamber;
Equipment for producing optionally dyed plants.

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