Gradation coloring method of paper for artificial flower

Abstract

To provide a gradation coloring method of paper for artificial flower which can give directivity to color density and a color tone change, by a combination of a flow direction of paper fibers and a direction of dyeing using capillary force.SOLUTION: A gradation coloring method of paper for artificial flower includes a step of preparing a container of a dyeing liquid containing a dye to be dyed, a heater, colorless or an arbitrary color of paper to be dyed, and a liftable jig, a step of heating the container of the dyeing liquid to a predetermined temperature by a heater, a step of fixing the paper to be dyed to a jig capable of lifting the paper to be dyed, a step of immersing the paper to be dyed in a dyeing liquid by the liftable jig, and a step of pulling up the paper to be dyed after a predetermined time during which it has been immersed in the dyeing liquid, and dyes the paper to be dyed by capillary force of the paper to be dyed.SELECTED DRAWING: Figure 14

Description

[Technical field]

[0001] The present invention relates to a gradation coloring method for paper for artificial flowers, which is used to give paper an arbitrary gradation of shade or color, and more particularly, to a gradation coloring method for paper for artificial flowers, which can easily produce a natural and subtle gradation of "fluctuation" that cannot be obtained by applying normal dyes, by combining capillary force and the flow direction of paper fibers. The paper gradation colored by the present invention is particularly suitable for paper for producing artificial flowers that are desired to have a wide variety of natural color tones, and further, reproduce flowers with natural shades and natural color variations. [Background technology]

[0002] Colored paper of various colors is required for printed matter, wrapping paper, etc. Colored paper used for such purposes is generally produced by applying various dyes to colorless paper. Currently, a wide variety of dyes have been developed using chemical synthesis technology, making it possible to produce paper of any color upon request. In recent years, advances in digital printing technology that combines application technology using finely processed nozzles with the digital technology to control this have led to the disclosure of an image forming device that can reproduce a variety of finely controlled gradations of shade and color (Patent Document 1), making it possible to create plates for multi-color printing of paintings with gradations of shade and color.

[0003] With the influence of the application of digital printing technology that enables mass production and duplication, there is an increasing demand for the development of a gradation coloring method that produces shades and colors that are closer to nature. In flower arrangements of flowers with a wide variety of colors, artificial flowers are provided that artificially reproduce short-lived fresh flowers and allow for continuous appreciation. However, while it is possible to manufacture resin artificial flowers with shapes close to the real thing using resin processing technology, it is difficult to reproduce the natural coloring required to approximate fresh flowers. To this end, instead of coloring in natural colors, a flower arrangement has been proposed in which artificial flowers are colored in white using LED lighting built into them, controlled by the coloring of digitally controllable LED lighting (Patent Document 2). However, digital technology using such electronic devices requires specialized knowledge, techniques, and equipment, and therefore poses problems in allowing many users to use them easily for a variety of purposes.

[0004] On the other hand, if paper, which has been widely used as a convenient material, could be made into color paper with natural gradation of light and shade and color, it would be expected to be used in a variety of applications. The applicant has provided a paper coloring method that can be easily applied to any color (Patent Document 3). However, it was difficult to achieve gradation, particularly natural shades and natural color tone changes, and to impart directionality to these shades and color tone changes with conventional methods.

[0005] As for the paper gradation coloring method suitable for artificial flowers with natural shading and natural color tone changes, which is the object of the present invention, the prior art has the above problems. To this end, the applicant has focused on the colors of plant leaves and flowers and has sought a method of gradation coloring of paper for artificial flowers. Plants absorb water from the soil through the root hairs of their roots by capillary action, and transport the water to the stems and leaves through xylem. Some of the water is evaporated from the stomata of the leaves. The nutrients absorbed from the roots along with the water are used for respiration, growth, and flowering, and the colors of plant leaves and flowers are expressed mainly by four types of pigment components: flavonoids, carotenoids, betalains, and chlorophyll.

[0006] Currently, a wide variety of paper materials are used depending on the purpose, including Japanese paper made from natural cellulose, various coated papers, processed papers, printing papers, and even sanitary and sanitary papers that focus on water absorption. In the present invention, we focused on the capillary phenomenon, which is closely related to the transport of water in plants and the coloring of leaves and flowers, and further focused on the directionality of capillary force observed in plant xylems to explore a method for gradation coloring of paper for artificial flowers. In an application of paper that focuses on the capillary phenomenon, a water supply device for plants has been proposed that uses rayon string that contains a large amount of cellulose components, taking advantage of the directional nature of capillary force (Patent Document 4). Also, an absorbent body for absorbent articles containing various cellulose-based water-absorbent fibers has been disclosed (Patent Document 5). However, there has been no proposal for a method of gradation coloring of paper for artificial flowers utilizing capillary action. In view of the above-mentioned prior art, the applicant focused on the color development of leaves and flowers in plants due to capillary action, and conducted intensive research, leading to the completion of the present invention. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2012-195727 A [Patent Document 2] JP 2016-102281 A [Patent Document 3] Patent No. 4058714 [Patent Document 4] Patent No. 4615341 [Patent Document 5] Patent Publication No. 2022-031459 Summary of the Invention [Problem to be solved by the invention]

[0008] An object of the present invention is to provide a gradation coloring method for paper for artificial flowers which gives natural shading and natural color tone changes in coloring of paper and gives directionality to these shading and color tone changes. More specifically, the object is to provide a gradation coloring method for paper for artificial flowers that can impart directional changes in shade and color tone by combining the flow direction of the paper fibers with the direction of dyeing using capillary force. [Means for solving the problem]

[0009] In order to solve the above problems, the gradation coloring method for artificial flower paper of the present invention is as follows: A step of preparing a container of a dyeing solution containing a dye to be dyed, a heater, colorless or any color of dyed paper, and a jig that can be raised and lowered; Heating the dyeing solution container to a predetermined temperature with a heater; A step of fixing the dyed paper to a jig that can be raised and lowered so that the angle between the flow direction of the fibers of the dyed paper and the immersion direction is between 0 degrees and 90 degrees; A step of immersing one end of the paper to be dyed in the dyeing solution by a liftable jig; The dyed paper is then removed from the dyeing solution after a predetermined time has elapsed since the dyeing solution was first immersed in the dyeing solution. It is characterized by dyeing using the capillary force of the paper being dyed.

[0010] The gradation color paper of the present invention is characterized in that it has natural shading and natural color tone changes due to being dyed by capillary force, and these shading and color tone changes have a directionality that follows the capillary force, making it suitable for use in artificial flowers and flower arrangements. Effect of the Invention

[0011] According to the present invention, a method for gradation coloring of paper for artificial flowers can be provided that achieves natural shading and natural color tone changes as well as provides directionality to these shading and color tone changes by combining the flow direction of the paper fibers, the immersion direction, and capillary force. [Brief description of the drawings]

[0012] [Figure 1]This is a gradation color paper obtained by the gradation coloring method for paper for artificial flowers of the present invention, and the A1-A1' end was immersed in a dye solution. [Diagram 2] This is a gradient color paper obtained by the gradient coloring method for artificial flower paper of the present invention. The A1-A1' edge is immersed in a dye solution containing two dye components, and the dye components are separated and appear as a band structure. [Diagram 3] This is a gradation color paper obtained by the gradation coloring method for paper for artificial flowers of the present invention, and appears as a fan shape when the apex (A1) of the dyed paper cut into an equilateral triangle is immersed in a dye solution. [Figure 4] This is a two-color gradation color paper obtained by further immersing the B1-B1' edge of the first gradation color paper shown in FIG. 1 in a second dye solution. [Diagram 5] This is a plan view of a two-color gradation color paper obtained by immersing the B1-B1' edge of a dyed paper folded in half at B1-B1' in a dyeing solution, and then immersing the A1-A1' and A2-A2' edges of the first gradation color paper in a second dyeing solution, with the B1-B1' fold unfolded. [Figure 6] This is a plan view of a two-color gradation paper folded in half along B1-B1' in Figure 5, glued on the inside along line C1-C1', and with a 1 / 2 flag leaf drawn for cutting. [Figure 7] This is a plan view of the flag (a) after the half of the flag cut out from the folded two-color gradation color paper in Figure 6 is unfolded. It shows how the cut outline is partially divided and pulled in both directions of the arrows to create the "crinkles." [Figure 8] 6 is a diagram showing how the two-color gradation color paper of FIG. 5 is folded inward along line C2-C2', and then folded further inward along line C3-C3' to make a third fold. [Figure 9]This is a plan view of the two-color gradation paper folded in thirds in Figure 8, with the outlines of the wing petals (b) in the center and the two keel petals (c) on the outside drawn along lines D1-D1' and D2-D2'. From this, three wing petals (b) and two keel petals (c) folded in half along lines C2-C2' and C3-C3' are obtained. [Figure 10] This is a plan view of the wing valve (b) cut from the center of Figure 9. It shows how the cut outline is partially divided and pulled in both directions of the arrows to provide "curls." [Figure 11] This figure explains how the paper is folded in half along line C3-C3' to wrap a wire stem rolled into a small bean shape, and then joined along line C3-C3' to obtain a keel petal with a bulge in the middle. [Figure 12] FIG. 5 is a plan view showing the flag petal (a), wing petal (b), and keel petal (c) made from the two-color gradation color paper of FIG. 4. [Figure 13] This is a photograph of an artificial sweet pea made from the standard petals (a), wing petals (b), keel petals (c), and stem (e) in Figure 12. [Figure 14] This is a photograph of a flower arrangement using the artificial sweet pea shown in Figure 13. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] Hereinafter, the embodiments of the present invention will be described in detail. This description is for the purpose of explaining the present invention, and is not intended to limit the technical scope of the present invention. The present invention can be implemented in various modifications without departing from the technical scope of the present invention.

[0014] The gradation coloring method for artificial flower paper of the present invention comprises the steps of: A step of preparing a container of a dyeing solution containing a dye to be dyed, a heater, colorless or any color of dyed paper, and a jig that can be raised and lowered; Heating the dyeing solution container to a predetermined temperature with a heater; A step of fixing the dyed paper to a jig that can raise and lower the dyed paper; A step of immersing the paper to be dyed in the dyeing solution by a liftable jig; and The dyed paper is then removed from the dyeing solution after a predetermined time has elapsed since the dyeing solution was first immersed in the dyeing solution. Dyeing can be achieved by the capillary force of the paper to be dyed.

[0015] According to one embodiment of the method for gradation coloring of paper for artificial flowers of the present invention, the method may further include a step of pre-immersing a part or the whole of the paper to be dyed in water for a predetermined period of time before immersing the paper to be dyed in the dye solution.

[0016] The paper to be dyed in the gradation coloring method for artificial flowers of the present invention can be any paper containing absorbent natural pulp, such as fine paper, matte paper, art post paper, kraft paper, matte post paper, Kent paper, Japanese paper, crepe paper, or paper with an embossed surface, or nonwoven paper.

[0017] Furthermore, the paper to be dyed may be folded and further creased before gradation coloring. Gradation coloring can be achieved by immersing the fold edge of the paper to be dyed in a dyeing solution.

[0018] The gradation coloring method obtained by one embodiment of the paper for artificial flowers of the present invention will be described with reference to the drawings. When one end of a white piece of dyed paper, for example the A1-A1' end in Figure 1, is immersed in a dye solution (for example, red), the dyeing water is sucked up against gravity by capillary action, resulting in a dye gradation as shown in Figure 1.

[0019] The direction in which the paper to be dyed is immersed in the dyeing liquid can be any angle relative to the surface of the dyeing liquid, but in this invention, when the direction in which the paper to be dyed is immersed in the dyeing liquid is referred to as the "immersion direction," it means immersion in a direction perpendicular to one edge of the paper to be dyed and perpendicular to the surface of the dyeing liquid, unless otherwise specified.

[0020] Dyed paper is made up of an accumulation of cellulose fibers, and the hydrophilic cellulose fibers absorb water. Furthermore, the accumulation of cellulose fibers creates a porous structure with tiny gaps between adjacent cellulose fibers. These correspond to capillaries, and the dye solution is absorbed by capillary force. Because there is a distribution of variation in the tiny gaps within the paper, the dye contained in the water is transported as the dye solution is absorbed (transported), resulting in a natural and subtle "fluctuation" in the concentration distribution.

[0021] The spread of the dye gradation concentration distribution is due to the difference in transport speed caused by adsorption and desorption based on the interaction between the dye components and the cellulose fiber. For example, when using a dye solution containing two or more dye components, if the transport speeds of the dye components differ significantly, the position of the uptake front may differ for each dye component, and this may appear as a band structure as shown in Figure 2.

[0022] Depending on the combination of the dye components, dye concentration, dye solution temperature, immersion time, and paper to be dyed used, the resulting gradation may have a higher concentration at the tip of the wicking. In particular, when the interaction between the dye components and the cellulose fiber is weak and the transport rate is high, a band structure appears as shown in Figure 2. This phenomenon that appears as a band structure is applied to the separation and identification of each component from a mixed component liquid in paper chromatography.

[0023] Since paper is made by mechanically moving fibers extracted from pulp in a fixed direction, the fibers tend to align in the direction of papermaking, creating the flow of fibers (grain). For example, paper with fibers flowing parallel to the long side of the cut paper (whole paper) is called "vertical grain." The relationship between the flow direction of the fibers of the dyed paper and the immersion direction is important in the gradation coloring method of the present invention, which utilizes capillary force. When the fiber flow direction of the dyed paper is parallel to the immersion direction, and the angle between the fiber flow direction and the immersion direction is 0 degrees, the dye solution is efficiently absorbed by the capillary force along the fiber flow direction, resulting in a gradation along the fiber flow direction.

[0024] On the other hand, when the fiber flow direction and the immersion direction are not parallel, or the angle between them is between 0 and 90 degrees, the dye solution is sucked up macroscopically by capillary forces along the immersion direction, and also sucked up microscopically by capillary forces along the fiber flow, resulting in a gradation that is different from when the fiber flow direction of the dyed paper is parallel to the immersion direction.

[0025] For example, when the fiber flow direction and the immersion direction are not parallel, and the angle between them is 45 degrees, the speed at which the dye solution is pulled up is slower than when the fiber flow direction and the immersion direction are parallel, and the shape of the tip of the dye solution sucked up is more deviated from a straight line than when the fiber flow direction and the immersion direction are parallel, resulting in a darker color gradation than when the dye solution is sucked up to the same position. As described above, depending on the angle between the direction of fiber flow and the direction of immersion, color changes and gradation coloring of the paper with different shades and color changes can be achieved.

[0026] The gradation color obtained by the gradation coloring method of the present invention for paper for artificial flowers depends not only on the angle between the direction of fiber flow and the direction of immersion, but also on the shape of the paper in the area immersed in the dye solution. According to one embodiment of the gradation coloring method for paper for artificial flowers of the present invention, the shape of the paper in the area to be immersed in the dye liquid can be such that the edge of one end of the paper to be immersed in the dye liquid is straight or has a linear or curved peak-valley shape.

[0027] According to one embodiment of the gradation coloring method for paper for artificial flowers of the present invention, when the edge of one end of the paper to be dyed that is immersed in the dye solution is not straight, but has linear or curved peaks and valleys, the entire area of ​​the peak-and-valley shape can be immersed in the dye solution, or only a portion of it can be immersed in the dye solution.

[0028] If the edge of one end of the paper to be immersed in the dye solution is not straight, but has a linear or curved valley shape, and only part of the valley shape of the edge is immersed in the dye solution, the transport of the dye solution (uptake of the dye solution) by capillary force will not be uniform depending on the shape of the valley. In particular, in the initial stage of immersion, the shape of the tip of the dye solution being sucked up may have a pattern that varies depending on the shape of the peaks and valleys in the immersed area.

[0029] For example, when a dyed paper is cut into an equilateral triangle in which the perpendicular line from the apex (Fig. 3 A1) to the base (Fig. 3 B1-B1') is parallel to the direction of fiber flow, and the paper is immersed in the dye solution from the apex (Fig. 3 A1) so that the immersion direction is parallel to the direction of fiber flow, a gradation in the shape of the wicking tip opening out into a fan shape from the apex, as shown in Fig. 3, is obtained.

[0030] As shown in Figure 3, the tip of the dye solution that is sucked up can form a gradation that depends on the shape of the edge of one end of the paper to be dyed that is immersed in the dye solution, and it is possible to obtain gradation coloring paper with a pattern that is suitable for the petals of an artificial flower. In particular, by combining the conditions under which the dyeing components of the dye solution separate and appear as a band structure, as shown in Figure 2, with the shape of one edge of the dyed paper that is immersed in the dye solution, it can be applied as a gradation coloring method that reproduces the complex patterns of artificial flower petals.

[0031] According to another aspect of the present invention, gradation color paper (hereinafter referred to as "first gradation color paper") dyed by the gradation coloring method of the present invention (hereinafter referred to as "first gradation coloring method") can be used as the dyed paper.

[0032] If a dye of a different color is used as the gradation coloring method using the first gradation color paper (hereinafter referred to as the "second gradation coloring method"), a two-color gradation color paper (hereinafter referred to as the "second gradation color paper") can be produced. In this case, the direction of the gradation obtained along the immersion direction may be different from or the same as that of the first gradation coloring method.

[0033] A case where the direction of the gradation in the second gradation coloring method is different from that in the first gradation coloring method will be described. Figure 4 shows an example of a second gradation color with two colors (red and willow) with different gradation directions obtained by immersing the B1-B1' end of the first gradation color paper (e.g. red gradation) shown in Figure 1 in a dyeing solution of a different color (e.g. willow). In Figure 4, an undyed area (white in the case of white dyed paper) is left in the center. The two-color second gradation color in Figure 4 can be used as the petals of various artificial flowers, as shown in the example of making artificial flowers described later. For example, the red color can be the tip of the petal and the willow color can be the calyx.

[0034] If the second gradation coloring method is performed so that the two colors are mixed without leaving any undyed area in the center as shown in Figure 4, the center will become a gradation area of ​​a mixed color where the two colors are mixed, and a three-color color gradation will be obtained.

[0035] Furthermore, if colored paper is used as the dyed paper instead of white paper, a color gradation of a mixed color in which two colors are unevenly mixed depending on the location of the dyed paper can be obtained by the second gradation coloring method.

[0036] Furthermore, when the second gradation coloring method uses a dye of a different color from that of the first gradation coloring method, and the first gradation coloring method and the second gradation coloring method are performed in the same immersion direction from the same edge, a mixed color gradation of two colors having the same gradation direction can be obtained. Depending on the dye, a gradation color having a band structure as shown in Figure 2 may be obtained.

[0037] As illustrated above in the embodiments of the present invention, the method for gradation coloring of paper for artificial flowers of the present invention can be applied to a wide variety of combinations, such as the presence or absence of coloring of the dyed paper, the angle between the flow direction of the fibers and the immersion direction, the gradation direction, multi-color gradation coloring, and the shape of the immersion area.

[0038] The procedure for gradation coloring according to the method of the present invention will be described using paper for artificial flowers as an example.

[0039] <dye> The dye used in the present invention may be a commercially available water-soluble dye, provided that it is suitable for the purpose. Alternatively, a dye extracted from colored drawing paper may be used. As the colored drawing paper for color development (hereinafter referred to as "color development base paper"), for example, a dye extracted from New Color R (manufactured by Lintec Corporation) may be used. The relationship between New Color R and the color of the extracted dye is shown in Table 1 below. These color development base papers can be used for color development and can also be used as dyed paper for the gradation coloring method.

[0040] [Table 1]

[0041] We will explain two typical types of gradation color dyed paper for artificial flowers: pink to orange gradation color dyed paper for petals and green gradation color dyed paper for leaves. First, the color-producing base paper is folded to an appropriate size, then submerged in a container of water and the water in the container is heated. Shortly after it boils, the dye dissolves into the water, creating a dye solution, which can then be kept at boiling temperature to create a gradation color.

[0042] The dyed paper to be colored in a gradation is selected according to the use of the paper after dyeing. For example, when using it as a material for artificial flowers, a paper suitable for making flowers and leaves, such as crepe paper or soft paper, is selected, and the dyed paper is fixed to a fixture for immersion. At this time, the paper is fixed so that the angle between the direction of fiber flow and the direction of immersion is kept at a specified angle between 0 degrees and 90 degrees. The paper is fixed not only by spreading it out on a flat surface, but also by preparing a fixture that can fix it while folded or rolled into a cylinder. The important function of the fixture is that it can be raised and lowered while keeping the angle between the direction of fiber flow and the direction of immersion at a specified angle.

[0043] The lifting mechanism is used to immerse the edge of the paper to be dyed in the boiling colored dyeing solution. When the edge of the paper to be dyed is submerged in the colored water, the dye dissolved in the water is sucked up by capillary action and absorbed into the paper in a few seconds to a few minutes, resulting in gradation coloring. If the paper to be dyed has folds, wrinkles, crepes, or embossing, for example, the folds of the wrinkles have a different degree of capillary action because the paper structure is destroyed, making it easier for the dye to penetrate and resulting in a darker coloring in the areas where the wrinkles are formed, and the paper after dyeing has wrinkles in a pattern, giving it a subtle look. The paper to be dyed is then pulled out of the dyeing solution, spread out, and dried to obtain the desired color gradation.

[0044] When colored dyed paper is used, the color tone of the dyed paper after gradation coloring is a combination of the original color tone of the dyed paper and the color tone of the dye dissolved from the color base paper, and this final color tone is unique and different from both the color base paper and the dyed paper. For example, if you use dark red colored construction paper as the base paper and light cream colored crepe paper as the dyed paper, the color tone of the dyed paper after gradation coloring will be a pale orange color. Moreover, this pale orange gradation has a subtle color tone close to that of natural flowers. Even if the combination of base paper and dyed paper is the same, you can create gradations with different hues, values, and saturations by changing the time of immersion in the dye solution and the temperature of the dye solution.

[0045] Dyed paper that has been colored in this way has a unique gradation of color tones, and can therefore be used for a wide variety of purposes such as wrapping paper and greeting cards, but a particularly suitable use is as a material for artificial flowers. According to the present invention, it is possible to obtain extremely subtle gradations in color tone by adjusting the combination of the dye and the color tone of the dyed paper and the conditions of the gradation coloring process, and it is possible to not only easily produce colors close to those of natural flowers, but also to create artificial flowers with original colors that do not exist in nature. Furthermore, by changing the direction of the gradient coloring, it is possible to create patterns like those seen on flower petals.

[0046] An example of making artificial flowers according to the gradation coloring method of the present invention for paper for artificial flowers will be described below. The gradation color paper made by the present invention is suitable for making artificial flowers, but is not limited to making artificial flowers. EXAMPLES

[0047] [Staining solution 1] As the color base paper, a quarter cut New Color R Dark Red (manufactured by Lintec Corporation) was selected, folded into quarters, and placed at the bottom of a 500 mL container. Next, 300 mL of water was added to the container, heated to boiling, and maintained at boiling temperature. During heating, the color of the water gradually turned red, producing a red dye solution.

[0048] [Manufacture of the first gradation color paper] First, an example of single-color gradation coloring as shown in FIG. 1 will be described. As the dyed paper that will become the petals of the artificial flower, there can be used high-quality paper containing absorbent natural pulp, matte paper, art post paper, craft paper, matte post paper, Kent paper, Japanese paper, crepe paper, or paper with an embossed surface or nonwoven paper. As an example, a Salva (registered trademark) 30 cm x 34 cm (manufactured by Hakujuji Co., Ltd.) was prepared, rolled into a cylinder, and fixed to a jig that could be raised and lowered so that the direction of immersion was parallel to the direction of fiber flow, and immersed in a red dyeing solution (Dyeing solution 1) to perform gradation coloring. The immersion time can be set appropriately depending on the color tone and concentration of the dyeing solution, the color tone of the paper to be dyed, and the concentration of the desired color, but generally 2 seconds to 1 minute is sufficient. In addition, the paper to be dyed was rubbed prior to immersion, but coloring may be performed without rubbing. The process was completed when 1 / 3 of the immersed area of ​​the dyed paper had been colored in a gradation and only white areas remained. After the dyeing, the paper was taken out of the dyeing solution, loosely spread while still wet, and then air-dried to obtain a paper for dyeing petals. This paper changed to a deep pink color after 30 seconds of gradation coloring. The first gradation color paper shown in Figure 1 was obtained. EXAMPLES

[0049] [Staining solution 2] Next, a willow-colored dye solution was prepared in the same manner as in [Dyeing solution 1], using New Color R Willow (manufactured by Lintec Corporation) as the color base paper.

[0050] [Manufacture of the second gradation color paper] A manufacturing example of the second gradation color paper having two colors shown in FIG. 4 will be described. The pink gradient-colored dyed paper (first gradient color paper) of [Example 1] was rolled into a cylindrical shape so that the fiber flow direction and the immersion direction were parallel, and the other undyed white end edge (the B1-B1' end edge shown in Figure 1) was fixed to a jig that could be raised and lowered so that it was immersed. The second gradation coloring method was carried out using the willow-colored dyeing solution [Dyeing solution 2]. The process was completed when 1 / 3 of the immersed area of ​​the dyed paper was gradation colored. The important thing at the end is that the white area in the center remains, with no gradation coloring in any color. After the dyeing, the paper was taken out of the dyeing solution, loosely spread while still wet, and then air-dried to obtain a paper for dyeing petals. The areas of the paper that had been immersed in the dye for 30 seconds turned a deep willow color. A two-color second gradation color paper was obtained, as shown in Figure 4.

[0051] An example of manufacturing two-color gradation color paper of a dyed paper folded in half by folding the dyed paper shown in FIG. 5 in the center (FIG. 5 B1-B1') will be described. First, following the procedure in [Manufacturing the first gradient color paper], the non-folded edges of the dyed paper folded in half (Figure 5 A1-A1', A2-A2') were immersed in [Dyeing solution 1] to obtain the first pink gradient color paper. Next, following the procedure in [Manufacturing the second gradation color paper], the edge of the fold (FIG. 5 B1-B1') was immersed in [Dyeing solution 2] to obtain the second gradation color paper in pink and willow green. The two-color gradation-colored folded dyed paper was unfolded to obtain a second gradation color paper having two colors, pink and willow, for the petals, as shown in FIG. We will explain the process of making three types of petals - standard petals, wing petals, and keel petals - using the second gradation color paper in two colors, pink and willow green.

[0052] Figure 6 shows the second two-color gradient color paper folded in half along B1-B1' in Figure 5, glued linearly on the inside along line C1-C1', and then drawing half a flag petal to cut out after folding in half.

[0053] Figure 7 shows the process of recreating the "crinkle" of the flag (a) by cutting along the glue at C1-C1' in Figure 6, cutting along the outline of the flag, spreading it out, partially dividing the periphery of the cut flag, and pulling it in the direction of the arrow.

[0054] Next, we will explain the process of manufacturing the wing petals and keel petals using a second gradation color paper of two colors, pink and willow, folded in thirds. The second gradation color paper of the two colors in FIG. 8 is folded inward along line C2-C2', and then folded further inward along line C3-C3' in FIG. 8 to create a third fold as shown in FIG.

[0055] As shown in Figure 9, Figure 8 was folded in thirds on a two-color gradient color paper, and the outline of the wing petal (b) was drawn in the center along lines D1-D1' and D2-D2', and the outline of two keel petals (c) was further drawn on the outside. By cutting out the wing petals (b) and keel petals (c) drawn on the two-color gradient color paper folded in thirds as shown in Figure 9, three wing petals (b) and two keel petals (c) folded in half along the lines C2-C2' and C3-C3' are obtained.

[0056] The "curl" of the cut wing petal (b) can be reproduced by partially dividing and pulling the cut peripheral area as shown in Figure 10.

[0057] Figure 11 is a plan view of the (c) keel flap folded in half along line C3-C3', of the triangle formed by cutting the third fold in Figure 8 along lines D1-D1' and D2-D2', depicting two (c) keel flap parts.

[0058] A small bean-shaped rolled piece of paper (d) is fixed to the tip of a wire (e), and the wire (e) with the bean-shaped rolled paper (d) fixed to it is placed on the keel petal (c) along line C3-C3' in Figure 10. The wire is then folded along line C3-C3' to encase the bean-shaped rolled paper (d), joined, and cut, resulting in a keel petal with a bulge in the center and fixed to the tip of the wire (e). The wire is wrapped in willow-colored paper and fluffed to make the stem.

[0059] Figure 12 shows the standard petals (a), wing petals (b), and keel petals (c) obtained from two-color second gradation color paper.

[0060] The willow-green gradation-colored parts of the two wing petals (b) are overlapped and joined to the keel petal attached to the stem and fixed in place. Finally, the standard petal (a) is fixed to the opposite side of the two wing petals (b) to produce the artificial sweet pea flower shown in Figure 13.

[0061] As shown in Figure 13, the base of the petal is a deep willow color, which forms a natural gradation from the base of the sepals to the end of the petal, while the end of the petal is a deep pink, which forms a natural gradation from the base of the petal to the end of the petal. As described above, the two-color second gradation color paper can be widely used for the petals of various artificial flowers.

[0062] In the above Examples 1 and 2, the flow direction of the fibers of the dyed paper and the immersion direction are parallel to each other. As shown in Figures 6 and 9, the resulting flag (a) and wing (b) are cut out along lines C1-C1' in Figure 6 and D2-D2' in Figure 9, respectively. That is, the C1' side in the flag (a) and the D2' side in the wing (b) are the sides attached to the calyx.

[0063] In order to obtain a color gradation from the calyx to the tip of the petals, in another embodiment, the gradation coloring can be performed in which the direction of immersion is not parallel to the fiber flow direction of the dyed paper. For example, when producing a flag valve (a), by using a dye whose fiber flow direction and immersion direction are pre-set so that the flow direction of the dyed fibers is parallel to the C1-C1' line in Figure 6, and using a second gradient color paper of two colors obtained by the first and second gradient coloring methods, a flag valve (a) with a more natural gradation color can be obtained because the fibers flow from the calyx toward the periphery of the flag valve (a) (from C1' to C1 in Figure 7). When manufacturing the wing petal (b), if the fiber flow direction and immersion direction are set in advance so that the flow direction of the dyed fibers is parallel to the D2-D2' line in Figure 9, then, as in the case of the flag petal (a), the fibers will flow from the calyx toward the periphery of the wing petal (b) (from D2' to D2 in Figure 9), and a more natural gradation color of the wing petal (b) can be obtained.

[0064] The gradation coloring method uses not only white dyed paper but also pre-colored dyed paper, thereby obtaining not only a single-color gradation of the dye but also a mixed color gradation with the pre-colored dyed paper. Table 2 below shows examples of color mixing with various colored papers using the red dye of [Dyeing Solution 1].

[0065] [Table 2]

[0066] Next, we will describe an example of gradation coloring using pre-colored dyed paper to create leaves for artificial flowers. EXAMPLES

[0067] [Manufacturing mixed color gradation paper] The dyed paper for the leaves of the artificial flowers was New Color R Pale Green (manufactured by Lintec Corporation), which was immersed in the dye solution [Dyeing Solution 1] for about 1 minute and then removed. It was then lightly spread out and allowed to dry naturally, resulting in a mixed-color gradation color paper for the leaves that was olive green with a reddish gradation color.

[0068] In addition, New Color R Willow (manufactured by Lintec Corporation) was used as the dyed paper and gradient coloring was performed using [Dyeing Solution 1] to obtain a willow-colored leaf gradient coloring paper with a reddish gradient. In order to create artificial flowers with a richer color variation, various types of dyed paper can be used while varying the immersion time to reproduce artificial flowers of various colors, and the flower arrangement shown in Figure 14 can be created.

[0069] It should be noted that the above-described process for producing artificial flowers is merely an example, and the present invention is not limited thereto. [Industrial Applicability]

[0070] The gradation coloring method for paper for artificial flowers of the present invention does not require special equipment or knowledge of digital technology, and can produce colored paper with natural shading and color gradation using paper that has been widely used as a convenient material, and can easily express a natural and subtle gradation of "fluctuation" that cannot be obtained by applying normal dyes. Paper with gradation coloring according to the present invention is not only ideal for artificial flower paper, which is particularly desired for its wide variety of natural color tones and reproduces flowers with natural shading and natural color changes, but is also expected to be used in a variety of different applications, and has great potential for industrial use. [Explanation of symbols]

[0071] (a) Flag valve (b) Wing valve (c) Keel flap (e) Stem

Claims

1. A step of preparing a container of a dyeing solution containing a dye to be dyed, a heater, colorless or any color of dyed paper, and a jig that can be raised and lowered; heating the dyeing solution container to a predetermined temperature by a heater; A step of fixing the dyed paper to the raising and lowering jig so that the angle between the flow direction of the fibers of the dyed paper and the immersion direction is 0 degrees or more and 90 degrees or less; A step of immersing one end of the dyed paper in the dyeing solution by the liftable jig; and The dyed paper is then removed from the dyeing solution after a predetermined time has elapsed since the dyeing solution was first immersed in the dyeing solution. This is a method for gradation coloring of paper for artificial flowers, characterized in that the paper is dyed by the capillary force of the paper.

2. 2. The method for gradation coloring of paper for artificial flowers according to claim 1, further comprising the step of immersing a part or the whole of the paper in water for a predetermined time before immersing the paper in the dyeing solution.

3. 3. The method for gradation coloring of paper for artificial flowers according to claim 1 or 2, characterized in that the dyed paper is high-quality paper, matte paper, art post paper, craft paper, matte post paper, Kent paper, Japanese paper, crepe paper, non-woven paper, or paper containing absorbent natural pulp with an embossed surface.

4. 4. The method for gradation coloring of paper for artificial flowers according to claim 3, wherein the end of the paper to be dyed, which is to be immersed in the dyeing solution, is a straight line or has a linear or curved peak-valley shape.

5. 4. The method for gradation coloring of paper for artificial flowers according to claim 3, wherein when the end side of the paper to be dyed that is immersed in the dyeing liquid is not a straight line but has linear or curved peaks and valleys, the entire peak and valley shape is immersed in the dyeing liquid or only a part of the peak and valley shape is immersed in the dyeing liquid.

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