JP5386741B2 - Manufacturing method of Japanese paper three-dimensional object and Japanese paper three-dimensional object - Google Patents

Description

  The present invention relates to a method for producing a Japanese paper three-dimensional shape suitable for a shade for a lighting fixture such as a stationary electric lighting fixture, a desk lamp, a line lamp, a lantern, a ceiling hanging lighting fixture, or an interior object. . The present invention also relates to a Japanese paper three-dimensional object manufactured using such a method.

In recent years, old Japanese items such as traditional crafts have been reviewed, and products using Japanese paper materials tend to be preferred as lamp shades for electric lighting equipment. As a lamp shade using a Japanese paper material, a structure in which a framework such as a bamboo string is formed and a Japanese paper material which is a translucent coating material is pasted on the outer peripheral surface of the framework is conventionally known. If the bamboo frame is used as a framework, the shapes that can be formed are limited. Therefore, a technique using a string member as a framework to enable more flexible modeling is disclosed in, for example, Patent Document 1 (Japanese Patent Laid-Open No. 5-156594). In Patent Document 1, a plurality of string-like members 2 having a fluffy surface are arranged to intersect with a surface of a prototype 1 made of a destructible material and having a desired three-dimensional shape. 3 and a paste-containing liquid material are adhered, the string-like member 2 and the plant fiber 3 are dried to form a Japanese paper molded body corresponding to the appearance of the prototype 1, and then the prototype 1 is broken to A method for producing a Japanese paper molded product, characterized in that it is taken out from the interior of the Japanese paper molded product, is disclosed.
JP-A-5-156594

  In the conventional technology, members that become a framework, such as string members, are assembled in advance, and strength is secured by attaching a paper material liquid to such a framework member, thereby maintaining the three-dimensional shape of the Japanese paper molded body. Like to do. However, in the process for assembling such a framework, it is necessary to arrange a plurality of string-like members having a fluffy surface on the surface of the prototype so that a great deal of labor is required by professional technicians for manufacturing. This is a problem because it becomes a bottleneck in mass production and increases costs.

  In order to solve the problems as described above, the invention according to claim 1 includes a stock solution adjusting step for adjusting a stock solution containing a Japanese paper raw material, water and a viscous agent, and a hydrogel in the stock solution. A hydrogel-dispersed stock solution adjusting step for dispersing the hydrogel-dispersed stock solution, a deposition step for depositing the hydrogel-dispersed stock solution on a mold, and the hydrogel dispersion deposited on the die It is a manufacturing method of a Japanese paper three-dimensional product characterized by comprising a drying step of drying a paper stock liquid to obtain a Japanese paper three-dimensional product.

  Moreover, the invention which concerns on Claim 2 further has the antibacterial agent application | coating process which apply | coats an antibacterial agent to the said Japanese paper three-dimensionally shaped object obtained by the said drying process in the manufacturing method of the Japanese paper three-dimensionally shaped object of Claim 1. It is characterized by that.

  Moreover, the invention which concerns on Claim 3 is a manufacturing method of the Japanese paper solid shaped article of Claim 1 or Claim 2, The glassy application | coating which apply | coats a glassy substance to the said Japanese paper solid shaped article obtained by the said drying process It further has a process.

The invention according to claim 4 is a method of manufacturing a paper three-dimensional object according to any one of claims 1 to 3, wherein the deposition step is be carried out by blowing hydrogel dispersion stock solution It is characterized by.

The invention according to claim 5 is a method of manufacturing a paper three-dimensional object according to any one of claims 1 to 4, by encapsulating and discharge of air in the mold, which can be reshaped It is characterized by using a thing.

The invention according to claim 6 is a method of manufacturing a paper three-dimensional object according to any one of claims 1 to 4, characterized by using as the said type which is blocked .

  The invention according to claim 7 is a Japanese paper three-dimensional product manufactured by the method for manufacturing a Japanese paper three-dimensional product according to any one of claims 1 to 6.

  According to the method for manufacturing a Japanese paper three-dimensional object of the present invention, a Japanese paper three-dimensional object is manufactured by directly depositing a hydrogel-dispersed paper stock liquid on a mold without performing a process for assembling a framework. Therefore, it is possible to carry out mass production while suppressing the cost without the need for specialized technicians, simple manufacturing, and cost reduction. In addition, the paper liquid in which the hydrogel used in the method for producing a Japanese paper three-dimensional product of the present invention is dispersed has a characteristic to maintain the state when it is deposited when it is deposited on a three-dimensional mold. Therefore, according to the method for producing a three-dimensional Japanese paper product of the present invention, a seamless three-dimensional Japanese paper product can be produced without taking time and effort. Moreover, since the manufacturing cost is suppressed, the Japanese paper three-dimensional product of the present invention can be provided at a low cost.

It is a figure which shows the flow of the process in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure explaining the structure of the type | mold in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure which shows the mode of the type | mold set in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure which shows a mode that the hydrogel dispersion | distribution paper stock liquid (product P300) is deposited on a type | mold in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure which shows the state which the deposition of the hydrogel dispersion paper stock liquid (product P300) completed in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure which shows the mode of the die cutting process in the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure explaining the concept of the antibacterial agent application process and the glassy application process in the manufacturing method of the Japanese paper solid shape thing concerning the embodiment of the present invention. It is a figure which shows an example of the utilization form of the Japanese paper solid shape manufactured by the manufacturing method of the Japanese paper solid shape thing which concerns on embodiment of this invention. It is a figure which shows a mode that the hydrogel dispersion | distribution paper stock liquid (product P300) is deposited on a type | mold in the manufacturing method of the Japanese paper solid shape thing which concerns on other embodiment of this invention. It is a figure explaining the structure of the type | mold in the manufacturing method of the Japanese paper solid shape thing which concerns on other embodiment of this invention. It is a figure which shows a mode that the hydrogel dispersion | distribution paper stock liquid (product P300) is deposited on a type | mold in the manufacturing method of the Japanese paper solid shape thing which concerns on other embodiment of this invention. It is a figure which shows the Japanese paper solid shape thing (product P400) manufactured by the manufacturing method of the Japanese paper solid shape thing which concerns on other embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a flow of steps in a method for producing a Japanese paper three-dimensional object according to an embodiment of the present invention.

  Step S100 in the manufacturing process is a process of adjusting a stock solution for making Japanese paper with a general paper basket. In this step S100, the Japanese paper raw material koji, pulp lump, and bend water in which a viscous agent is dispersed in water are put into a stirring tank and stirred, and are generated after a predetermined stirring process. It is possible to obtain a paper solution that is the product P100. In the present embodiment, 500 g of cocoon lump, 500 g of pulp lump, and beating water in which 10 g or less of a viscous agent is dissolved in 100 L of water are used. In addition, Alcox K-2 manufactured by Meisei Chemical Co., Ltd. was used as the above-mentioned adhesive. This Alcox K-2 is a synthetic viscosity agent for Japanese paper making, and is mainly composed of a polyethylene oxide-acrylamide copolymer. In addition, as a viscous agent melt | dissolved in paper stock liquid, it is not limited to this, A thing other than this can also be used.

  In addition, in the manufacturing process in the field related to Japanese paper such as the present embodiment, it is possible to slightly change the blending depending on the experience of the craftsman without performing strict component blending as in the general chemical field. It should be noted that the composition of each component as described above is only a reference value.

  Step S200 in the manufacturing process is a process in which CMC hydrogel is dissolved in water (warm water) to obtain a CMC hydrogel solution (product P200). Here, the CMC hydrogel used in the present embodiment is obtained by irradiating ionizing radiation in a paste state in which purified water is added to carboxymethyl cellulose (CMC) and kneaded well. This CMC hydrogel has the property of being an environmentally friendly biodegradable polymer water-absorbing gel that is biodegradable by microorganisms in the soil. Moreover, since CMC hydrogel has a characteristic that it can absorb and retain a large amount of water, it can be used in the medical and cosmetic fields as a sanitary product such as disposable diapers and a moisturizing material. Such hydrogels are described in JP 2008-11857 A, JP 2008-1111027 A, JP 2007-277491 A, JP 2004-43543 A, JP 2003-48997 A, and the like. Can be used. In this embodiment, as the CMC hydrogel, a gel fraction having a gel fraction of 10% to 80%, more preferably 40% to 70% is used.

  Now, since the CMC hydrogel as described above is relatively difficult to disperse in water, in the adjustment step in Step S200, warm water at a room temperature to 80 ° C. and powdered CMC hydrogel are added to a predetermined stirring tank. It is put in and stirred well. Here, 1 L of warm water used is 10 g of CMC hydrogel dispersed therein. In addition, in the adjustment process of step S200, it is possible to use a CMC hydrogel solution having a concentration range of about 0.1 to 10%.

  In the adjustment process of step S300, the paper gel liquid that is the product P100 and the CMC hydrogel solution that is the product P200 are stirred in a stirring tank to adjust the hydrogel-dispersed paper stock liquid in which the hydrogel is dispersed. To do. In this step S300, the concentration of CMC hydrogel in the hydrogel-dispersed paper stock liquid is about 0.01%.

In the water removal process in the subsequent step S301, about 90% of water is removed by a mesh member of about 18-20 mesh.

  If the viscosity of the hydrogel-dispersed paper material liquid that has undergone the water removal step is low, high-concentration boiled water for adjustment is added and stirred in step S302. It should be noted that the adhesive concentration is increased by about 0.01 to 0.1% by adjusting the viscosity in step S302.

  Through the steps as described above, a hydrogel-dispersed paper stock liquid (product P300) having an appropriate viscosity can be obtained. In this embodiment, a Japanese paper three-dimensional object is modeled by depositing a paper material liquid in which a CMC hydrogel such as the product P300 is dispersed in a mold having a predetermined three-dimensional shape. Since the stock liquid in which the hydrogel is dispersed has the property of maintaining the state when deposited, it is possible to form a three-dimensional shape without using a base material such as a framework. It becomes. In addition, since CMC hydrogel is a naturally-derived substance and a biodegradable substance, it can be said that the Japanese paper three-dimensional product produced according to the present invention is environmentally friendly when discarded.

  Next, a process for manufacturing a three-dimensional Japanese paper structure using the hydrogel-dispersed paper stock liquid (product P300) as described above will be described. In the following embodiment, a process for manufacturing a substantially spherical Japanese paper three-dimensional object having an opening will be described. FIG. 2 is a diagram for explaining a configuration of a mold in the method for producing a three-dimensional Japanese paper according to the embodiment of the present invention. In FIG. 2, 10 is a mold, 11 is a mold main body, 12 is a tubular portion, 20 is a shielding member, and 21 is an opening.

  The mold 10 is schematically composed of a substantially spherical mold body 11 and a tubular section 12 used for introducing air into the mold body 11 and discharging air introduced into the mold body 11. Has been. The mold body 11 is made of a resin material or rubber material having a thickness of several millimeters, and the shape of the mold body 11 can be reduced by introducing air into the mold body 11 or exhausting air from the mold body 11. It is configured to be changeable. The tubular portion 12 is provided with a valve (not shown) and the like. By closing the valve, the air introduced into the mold main body 11 is enclosed in the mold main body 11 to maintain the substantially spherical shape of the mold main body 11. Alternatively, the mold body 11 can be contracted by opening the valve and discharging the air introduced into the mold body 11.

  The state shown in FIG. 2 shows a state where the mold main body 11 is filled with air and the mold main body 11 has a substantially spherical shape. When a Japanese paper three-dimensional shaped product is formed by depositing the hydrogel-dispersed paper stock liquid (product P300) on the die 10, the shape when air is sealed in the die body 11 as shown in FIG. 2 is used.

  The shielding member 20 is a plate-like member having a circular opening 21, and the hydrogel-dispersed paper stock liquid (product P300) adheres to the bottom of the mold body 11 by shielding the bottom of the mold body 11. It is something to avoid.

  In the method for manufacturing a Japanese paper three-dimensional object according to the embodiment of the present invention, when modeling a Japanese paper three-dimensional object, first, air is introduced from the tubular portion 12 into the mold main body 11 to be expanded to maintain a substantially spherical shape. I will let you. Then, the shielding member 20 is set by fitting the opening 21 into the bottom of the mold body 11. FIG. 3 shows a state after the shielding member 20 is set on the bottom of the mold body 11 and ready for modeling with the hydrogel-dispersed paper stock liquid (product P300). FIG. 3 is a view showing a state of a mold set in the method for manufacturing a Japanese paper three-dimensional object according to the embodiment of the present invention.

Next, as shown in FIGS. 1 and 4, the hydrogel-dispersed paper stock liquid (product P300) adjusted in steps S300 to S302 is set in the spray gun 30. The spray gun 30 can be used for mortar spraying, and in this embodiment, FR-300 manufactured by VOYLET is used. The spray gun 30 used in the spraying step in step S400 is not limited to this, and other types can be used.

  As shown in FIG. 4, the hydrogel-dispersed paper stock liquid (product P300) set in the spray gun 30 is deposited so as to be as uniform as possible in the mold body 11. In addition, before the process of depositing the hydrogel-dispersed paper stock liquid (product P300) on the mold body 11, a mold release agent can be applied to the surface of the mold body 11 as necessary. However, as in this embodiment, when a paper material liquid in which CMC hydrogel is dispersed is used, there is a tendency that the releasability is good without using a release agent. FIG. 4 is a view showing a state in which a hydrogel-dispersed paper stock liquid (product P300) is deposited on a mold in the method for producing a Japanese paper three-dimensional product according to an embodiment of the present invention. FIG. 4 also shows step S400 in FIG. Even if the hydrogel-dispersed stock liquid (product P300), which is a stock liquid in which CMC hydrogel is dispersed, is deposited on the mold main body 11 by spraying of the spray gun 30, the state when it is deposited is shown. It has characteristics to be maintained and hardly falls off from the mold main body 11, and therefore, it is possible to form a three-dimensional shape without using an aggregate such as a framework. Further, the hydrogel-dispersed paper stock liquid (product P300) according to the present embodiment has a characteristic to maintain the state when deposited when it is deposited on the mold 10 having a three-dimensional shape. It becomes possible to manufacture a shape object without taking time and effort.

  FIG. 5 shows a state where the spraying step (step S400) by the spray gun 30 for depositing the hydrogel-dispersed paper stock liquid (product P300) on the mold 10 is completed. After the deposition is thus completed, a drying process (step S401) is performed. As this drying step, both natural drying and forced drying with warm air can be used, but it goes without saying that the latter can complete the drying step earlier than the former, and has good mass productivity. When the drying process in step S401 is completed, the Japanese paper three-dimensional shape is completed.

  Next, the process of removing the Japanese paper solid-shaped object which the drying process was completed from a type | mold is implemented. The die cutting process of step S402 is the process, and FIG. 6 specifically shows the state. FIG. 6 is a diagram showing a state of a die cutting process in the method for manufacturing a Japanese paper three-dimensional object according to the embodiment of the present invention. In the die-cutting process in step S402, a valve (not shown) in the tubular portion 12 is opened, and the air introduced into the mold main body 11 is exhausted, whereby the mold main body 11 is contracted, and the opening 21 of the shielding member 20 is used. The mold body 11 is removed from the opening at the bottom of the formed Japanese paper three-dimensional object.

The three-dimensional Japanese paper shaped article that has undergone the die-cutting process of step S402 is an antibacterial agent, if necessary, as shown in FIG. Both the coating process (step S403) and the glassy coating process (step S404) are performed. An antibacterial agent application process (step S403) is a process of apply | coating antibacterial materials, such as a photocatalyst, to the outer surface and inner surface of a Japanese paper solid-shaped thing, for example. Further, in the glassy coating step (step S404), the strength of the Japanese paper three-dimensional object is improved by applying a glass material mainly composed of polysiloxane to the outer surface of the Japanese paper three-dimensional object. This improves the light transmittance of the film and imparts water repellency. In the present embodiment, a butanol / ethanol solution having a tetraethoxysilane concentration of about 5 to 10% was applied to the outer surface of the three-dimensional Japanese paper and then dried. For this drying, any method of natural drying at normal temperature or forced drying at 40 ° C. to 80 ° C. can be used. In addition, if the concentration of tetraethoxysilane is made higher, the strength of the Japanese paper solid shape can be further improved, but in order to maintain the texture of the Japanese paper of the Japanese paper solid shape, the concentration of tetraethoxysilane Is preferably 5 to 10%.

  Through the above steps, a Japanese paper three-dimensional shape as shown in the product P400 in FIG. 1 can be finally obtained. According to such a method for manufacturing a Japanese paper three-dimensional product, the hydrogel-dispersed paper stock liquid (product P300) is directly deposited on a mold without performing a process for assembling a framework, and the like. Since it becomes possible to manufacture a thing, manufacture becomes easy and it becomes possible to implement mass production, suppressing cost. An example of the utilization form of such a Japanese paper three-dimensional shape is shown in FIG. FIG. 8 is a diagram showing an example of a utilization form of a Japanese paper solid shape manufactured by the method of manufacturing a Japanese paper solid shape according to the embodiment of the present invention. FIG. 8 shows a case where an electric lighting device 50 in which an electric lamp unit 52 is provided on a base unit 51 having a predetermined area is used by utilizing a bottom opening of a Japanese paper three-dimensional object (product P400). The usage mode is shown in such a manner that it is used in such a manner that it is covered. According to such a utilization form, it becomes possible to provide a warm lighting fixture made of Japanese paper material.

  Next, another embodiment of the present invention will be described. In the previous embodiment, the hydrogel-dispersed paper stock liquid (product P300) was deposited on the mold 10 and then the mold 10 was removed from the Japanese paper three-dimensional object. However, the present embodiment is a shaped Japanese paper. This is an example in which the three-dimensionally shaped product is finished as a final product without removing it from the mold. This embodiment is different from the previous embodiment only in the usage pattern of such a mold, and the other points are the same, so only the differences related to the mold will be described.

  FIG. 9 is a diagram showing a state in which a hydrogel-dispersed paper stock liquid (product P300) is deposited on a mold in the method for producing a Japanese paper three-dimensional product according to another embodiment of the present invention. The mold 60 used in the present embodiment is a transparent glass hollow body having an opening 61 at the bottom and having a substantially spherical shape. In the present embodiment, the hydrogel-dispersed paper stock liquid (product P300) is deposited on the mold 60 that is such a glass hollow body by spraying the spray gun 30 (step S400). And after that, step S401 which is a drying process is implemented, and it omits about the die cutting process of step S402. As in the previous embodiment, the three-dimensional Japanese paper shaped article that has undergone the drying process (step S401) is either an antibacterial agent application process (step S403) or a glassy application process (step S404), as required. Both the agent coating process (step S403) and the glassy coating process (step S404) are performed, and a Japanese paper three-dimensionally shaped product (product P400) as a final product can be obtained. Also by such an embodiment, it is possible to receive the same effect as the previous embodiment.

  Next, another embodiment of the present invention will be described. In the first embodiment, a mold 10 whose shape can be changed by enclosing and discharging air is used. However, in this embodiment, a mold that is blocked is used. The present embodiment is different from the first embodiment only in the usage pattern of such a mold, and the other points are the same. Therefore, only the differences related to the mold will be described.

  FIG. 10 is a view for explaining the structure of a mold in the method for producing a Japanese paper three-dimensional object according to another embodiment of the present invention. The mold 70 in the present embodiment is configured so that it can be divided into block units as indicated by hatching in the drawing. The seam in block units is indicated by a dotted line in FIG.

When such a blocked mold 70 is used, a block unit is assembled as shown in FIG. 10 when forming a three-dimensional Japanese paper by depositing a hydrogel-dispersed paper stock liquid (product P300). The shape to be shaped is made.
In the present embodiment, the hydrogel-dispersed paper stock liquid (product P300) is deposited by spraying the spray gun 30 on the mold 70 in which such block units are assembled (step S400). FIG. 11 is a view showing a state in which a hydrogel-dispersed paper stock liquid (product P300) is deposited on a mold 70 in the method for producing a Japanese paper three-dimensional product according to another embodiment of the present invention. Note that the spray of the hydrogel-dispersed paper stock liquid (product P300) by the spray gun 30 is not performed on the bottom of the mold 70, and the mold 70 is removed from the bottom.

  When step S401, which is a drying process, is performed through the process of step S400, the mold 70 is separated into block units, and the separated block units are taken out from the bottom of the Japanese paper three-dimensional object. A punching process is performed.

  The Japanese paper three-dimensionally shaped article that has undergone the die cutting process (step S402) is either the antibacterial agent application process (step S403) or the glassy application process (step S404) as necessary, as in the previous embodiments. The antibacterial agent application process (step S403) and the glassy application process (step S404) are both performed, and a Japanese paper three-dimensional shape product (product P400) as shown in FIG. 12, which is the final product, can be obtained. . Also by such an embodiment, it is possible to receive the same effect as the previous embodiment.

  As mentioned above, according to the manufacturing method of the Japanese paper three-dimensional shaped article of the present invention, the Japanese paper three-dimensional shaped article is produced by directly depositing the hydrogel-dispersed paper stock liquid on the mold without performing the steps for assembling the framework. Therefore, it is possible to carry out mass production while suppressing the cost without requiring a specialized technician, simple manufacturing, and cost reduction. In addition, the paper liquid in which the hydrogel used in the method for producing a Japanese paper three-dimensional product of the present invention is dispersed has a characteristic to maintain the state when it is deposited when it is deposited on a three-dimensional mold. Therefore, according to the method for producing a three-dimensional Japanese paper product of the present invention, a seamless three-dimensional Japanese paper product can be produced without taking time and effort. Moreover, since the manufacturing cost is suppressed, the Japanese paper three-dimensional product of the present invention can be provided at a low cost.

DESCRIPTION OF SYMBOLS 10 ... type | mold, 11 ... type | mold main-body part, 12 ... tubular part, 20 ... shielding member, 21 ... opening part, 30 ... spray gun, 50 ... electric lighting apparatus, 51 ... Base unit, 52 ... Electric lamp unit, 60 ... Mold, 61 ... Opening, 70 ... Mold

Claims (7)

A stock solution adjusting process for adjusting a stock solution containing a Japanese paper raw material, water, and a sticking agent;
A hydrogel-dispersed paper material liquid adjusting step of dispersing hydrogel in the paper material liquid and adjusting the hydrogel-dispersed paper material liquid;
A deposition step of depositing the hydrogel-dispersed paper stock liquid on a mold;
And a drying step of drying the hydrogel-dispersed paper stock deposited on the mold to form a Japanese paper three-dimensional product. The method for producing a Japanese paper three-dimensional product according to claim 1, further comprising an antibacterial agent application step of applying an antibacterial agent to the Japanese paper three-dimensional product obtained by the drying step. The method for producing a Japanese paper three-dimensional product according to claim 1 or 2, further comprising a glassy coating step of applying a glassy material to the Japanese paper three-dimensional product obtained by the drying step. Method for manufacturing a deposition step washi three-dimensional object according to any one of claims 1 to 3, characterized in that conducted by blowing hydrogel dispersion stock solution. By encapsulation and discharge of air in the mold, the production method of Japanese paper three-dimensional object according to any one of claims 1 to 4, characterized by using the one capable of shape changes. Method for producing paper three-dimensional object according to any one of claims 1 to 4, characterized in that used as the type that has been blocked. A Japanese paper three-dimensional product manufactured by the method for manufacturing a Japanese paper three-dimensional product according to any one of claims 1 to 6.

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