JP2011162923A - Method for manufacturing three-dimensional paper surface object - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a three-dimensional paper surface object which varied appearance of the object with various intricately complex concavities and convexities can be recreated with seamless paper with soft and warm touch unique to paper material. <P>SOLUTION: The method includes a plaster mold creating process (A) for creating a hollow plaster mode with the entire surface formed thin, a paper attaching process (B) for attaching paper material obtained from slurry containing fiber material and joining material on the entire surface of the plaster mold, a paper drying process (C) for drying the paper material attached on the surface of the plaster mold, and a plaster discharging process (D) for applying force on the dried paper surface which covers the plaster mold to finely crush the plaster mold inside and discharge pieces of crushed plaster from a hole or a cut provided at a part of the paper. By such processes a three-dimensional seamless paper surface object with various intricately complex concavities and convexities is manufactured. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a method for producing a three-dimensional shaped surface shaped article seamlessly from a paper material.

As a method for forming a paper three-dimensionally without a joint and obtaining a shaped article having a hollow inside, the following Patent Document 1 discloses a “Japanese paper forming body manufacturing method”, and the following Patent Document 2 describes “Paper forming body manufacturing”. Method "is disclosed.
In the method for producing a Japanese paper forming body of Patent Document 1, a three-dimensional prototype made of an easily breakable material such as a rubber balloon or gypsum is used, and fluffy string members are crossed on the surface of the prototype. Wrapping and adhering the paper material liquid on it, drying it, destroying the original part and taking it out, it is described that the interior is hollow and a seamless Japanese paper formed body is obtained. Yes.
In Patent Document 2, a three-dimensional net is immersed in a paper raw material solution, the solution is removed from the inside of the net to deposit the paper raw material on the surface of the net, and after drying, the net is extracted, It is described to obtain a seamless paper former.

JP-A-5-156594 Japanese Patent Laid-Open No. 2006-9203

In the “Washi paper forming body manufacturing method” described in Patent Document 1, the string-like member attached to the surface of the original pattern is obtained while remaining in the Japanese paper-forming body. There is a problem that the flavor of Japanese paper with a beautiful background surface is lost due to the bone shape that appears upon irradiation, which is a major limitation in designing, and it was difficult to obtain free and diverse shapes .
In addition, when the prototype itself is a three-dimensional surface that is intricately intricate, if the string is hung on it, the string does not enter the recessed part and the string is stretched linearly. There was a problem that the expression could not be expressed, and as a result, the entire model was collapsed like a balloon.
Further, in the “Paper Forming Method” described in Patent Document 2, the shape of the model is determined by the net, and after drying, the net is crushed and extracted, so that the net cannot be formed into a complicated three-dimensional shape. There was a difficulty that it was not possible to produce a model with complicated irregularities.

  Therefore, the present invention provides a method for producing a three-dimensional surface product made of paper that can be reproduced on seamless paper with the soft and warm feel unique to the paper material, with the appearance of various shaped objects with various intricately large and small irregularities. The purpose is to provide.

  In order to solve the above problems, the paper surface three-dimensional structure manufacturing method of the present invention is a gypsum mold that forms a hollow gypsum mold in which the entire surface is thinly formed. The paper raw material obtained from the slurry including the preparation step A, the fibrous material and the binder, the paper adhering step B for adhering to the entire surface of the plaster mold, and the paper raw material adhering to the surface of the plaster mold Paper drying step C to cover and cover the gypsum mold Applying force from the surface of the dried paper to finely crush the gypsum mold inside, discharging small pieces of gypsum crushed from holes or cuts provided in a part of the paper And a gypsum discharging step D.

  In the invention according to claim 2, in the above-mentioned invention, in the gypsum mold creating step A, the protruding portion is separated from the main body of the molded object, and the protruding portion and the main body are temporarily separated. Produce a gypsum mold that is thin from the surface and has a hollow interior, and that each gypsum mold is integrally fixed to the position of the original mold to restore the original three-dimensional model. It is characterized by.

  In the invention according to claim 3, in each of the above-mentioned inventions, in the gypsum mold creating step A, the main body of the three-dimensional structure to be a prototype is divided into a plurality of parts, and once from the divided parts of the main body and the main body, respectively. Separately, the gypsum mold with the entire surface thinly formed is manufactured, and each gypsum mold is integrally fixed to the original prototype position to obtain a gypsum mold that is restored to the original three-dimensional model. To do.

  In the invention according to claim 4, in each of the above inventions, in the gypsum mold creation step A, when a gypsum mold having a hollow inside is formed to form a gypsum mold having a hollow inside, a three-dimensional modeled object that becomes a gypsum mold Is buried in a liquid silicone resin in the container, and after the silicone resin is cured, the silicon resin is taken out of the container, and this is opened to take out the original three-dimensional modeled object to simulate the outer shape of the three-dimensional modeled object. Create an inner silicone resin mold, pour gypsum into the silicone resin mold in less than half the volume of the inner cavity, and slowly add the plaster film over the entire surface of the cavity. It is characterized in that the silicone resin mold is continuously rotated in all directions for several minutes and left to stand after the fluidity of the gypsum is stopped, and a gypsum mold having a hollow inside is formed with the entire surface being thinly formed.

  In the invention according to claim 5, in each of the above-mentioned inventions, in the paper attaching step B, the paper raw material is a paper raw material obtained by draining a slurry containing a fibrous material and a connecting material with a net. A small piece of paper peeled off from the net is attached to a plurality of layers so as to have a substantially uniform thickness over the entire surface of the plaster mold while being wet.

  In the invention according to claim 6, in each of the above inventions, in the paper attaching step B, the paper raw material is a paper raw material obtained by draining mud containing a fibrous material and a binder, and the wet paper raw material It is characterized by spraying on the plaster mold.

  In the invention according to claim 7, in each of the above inventions, in the paper attaching step B, a part of the paper raw material attached to the gypsum mold is formed in a thinner layer or a thicker layer than the surroundings. To do.

  The invention according to claim 8 is characterized in that, in each of the above inventions, in the paper adhering step B, a paper raw material colored in a single color or a plurality of colors using a colored slurry is used.

  In the invention according to claim 9, in each of the above inventions, in the paper adhesion step B, any one of paper, metal, plastic, and plant different from the paper raw material is provided between the adhesion layers of the paper raw material to be attached. It is characterized by containing the material.

  The invention according to claim 10 is characterized in that, in each of the above inventions, in the gypsum discharging step D, a crushing tool is inserted from a hole or a cut provided in the paper, and a small piece of gypsum is further crushed and discharged. And

  In the invention according to claim 11, in the method for producing a paper surface three-dimensional object according to any one of claims 1 to 10, a gypsum mold after the paper adhering step B or after the paper drying step C. A part or all of the surface of the paper adhering to the paper is leveled and pressed with a leveling tool, and the paper surface of the leveled and pressed portion is thinly and smoothly formed.

  In invention of Claim 12, in the manufacturing method of the paper surface three-dimensional molded item in any one of the said Claims 1-11, it dried after the paper drying process C or the gypsum discharge process D. It is characterized by printing on the surface of paper.

  In invention of Claim 13, in the manufacturing method of the paper surface three-dimensional molded item in any one of said Claims 1-12, after gypsum discharge process D, a part or all of the surface of paper It is characterized by applying paint.

In the method for producing the paper surface three-dimensional object of the present invention, the surface of the gypsum mold is thinly formed in the gypsum mold creation step A, so that the gypsum in the gypsum discharge step D can be pulverized easily with a small force. The gypsum inside can be easily removed from the holes and cuts formed in the paper so as not to stand out.
Further, in the paper adhering step B, the entire paper surface three-dimensional structure obtained by discharging the gypsum mold by adhering the wet paper raw material to the entire surface of the gypsum mold so as to have a substantially uniform thickness. However, it is possible to obtain a beautiful three-dimensional model of a piece of seamless paper.

In particular, in the paper adhering step B, even if the unevenness of the gypsum mold surface of the three-dimensional model is larger than the unevenness of the material surface of the paper itself, it is possible to express even very fine unevenness. This makes it possible to seamlessly reproduce the outlines of various shaped objects with various intricately large and small irregularities with a soft and warm feel unique to paper materials.
If this is used as a lighting fixture and light is emitted inside it, a seamless model will create an elegant and gentle atmosphere while expressing the gradation of light due to the unevenness of the natural fibers unique to paper fibers. It can be brewed.

  In the invention according to claim 2, in the gypsum mold creation step A, a small protruding portion is separated from the main body of the modeled object in the three-dimensional modeled object to be a prototype, and once again has a cavity inside. The thin gypsum molds that have been formed can be manufactured, and if these gypsum molds are restored and integrated with the original prototype, there will be cavities in any complex irregular shape. The gypsum mold that can be easily crushed and the small piece of the part can be discharged to the outside is obtained. Can be easily crushed.

In the invention according to claim 3, in the gypsum mold creating step A, the main body of the three-dimensional structure to be a prototype is divided into a plurality of parts, and once the entire surface is thinned separately from the divided part of the main body and the main body A gypsum mold with a hollow inside can be produced, and these gypsum molds are integrally fixed to the position of the original prototype to obtain a gypsum mold restored to include a large luminaire such as the prototype.
Therefore, even a very large three-dimensional model can be easily manufactured by dividing it into small parts.
Further, if a split hole is provided in the joint surface before joining the divided parts, a plaster mold in which a large object such as a lighting tool is placed in the restored cavity of the main body can be obtained. In this way, if a large object such as a lighting fixture is put inside the cavity, there is no need to make a large cut for putting the lighting fixture etc. on the surface of the finished paper three-dimensional object. It can prevent losing aesthetics.

In the invention according to claim 4, in the gypsum mold creation step A, if the original three-dimensional object is submerged in the liquid silicone resin, the three-dimensional object silicon resin almost equal to the original three-dimensional object is obtained. A mold is obtained, and from the silicon resin mold, a gypsum mold in which a gypsum dissolved in water is flowed thinly on the surface to form a thin surface inside can be easily obtained.
From the gypsum mold, a paper three-dimensional model almost equal to the original model is obtained. Even if the original pattern is finely concavo-convex, it is possible to easily restore and manufacture a complicated shape as it is.

In the invention according to claim 5, in the paper adhering step B, the paper raw material obtained by draining and draining the slurry containing the fibrous material and the connecting material with a net is peeled off from the net, and the paper is cut into pieces. Are attached to the plurality of layers so as to have a substantially uniform thickness over the entire surface of the plaster mold while being wet, so that the pieces of paper that are wet and the raw fibers remain loose. The boundary becomes inconspicuous, and as a result, it is possible to finally obtain a seamless paper surface three-dimensional object that is a sheet of paper as a whole.
In addition, if the paper is cut into pieces, the smaller the piece, the smaller the surface of the gypsum mold can be. If it is larger than the unevenness of its own material, it is possible to express even very small unevenness.

In the invention according to claim 6, in the paper adhering step B, the wet paper raw material is sprayed and adhered to the gypsum mold after draining the slurry containing the fibrous material and the binder. In addition, it is possible to obtain a paper surface three-dimensional object that is entirely seamless.
Further, since there is no need for paper making or cutting, the paper attaching process B can be completed quickly and easily.
In this case, the paper surface obtained by spraying produces softer cushioning properties than the paper made, and this soft texture can be utilized depending on the application.

  In the invention according to claim 7, in the paper attaching step B, a part of the paper raw material attached to the gypsum mold is formed in a thinner layer or a thicker layer than the surroundings, so that the restored shaped article An arbitrarily thin watermark or shadow can be formed on a part of the surface.

  In the invention according to claim 8, in the paper attaching step B, a colorful shaped article can be obtained by using a colored raw slurry and a paper raw material colored in a single color or a plurality of colors.

In the invention according to claim 9, in the paper adhesion step B, any material of paper, metal, plastic, or plant that is different from the paper material contained between the adhesion layers of the paper material to be adhered Appears as a faint shadow.
This design portion does not clearly distinguish the surroundings so that the seal can be applied to the surface, and the entire design is integrated so as to fit the paper, and there is no possibility of peeling off later.
By using planar natural objects such as plant leaves and petals, you can easily enjoy a natural atmosphere different from that drawn with a brush.
In addition, when enclosing metal or plastic, embedding a wire or plate at the bottom makes it possible to stably install it on the top of the table that decorates the paper surface three-dimensional object. Depending on the position of use of such materials, Reinforcement becomes possible.
In addition, when the main body of a paper surface three-dimensional object is divided into multiple parts, metal wires and plates are embedded in the opposite sides of the parts that are to be connected later, so that they can be fitted, or metal such as iron By using a permanent magnet together with a permanent magnet, it is possible to achieve a stronger and stronger bond than when using paper.

  In the invention according to claim 10, in the gypsum discharging step D, the surface of the paper that has been applied to the gypsum mold and dried is struck with a mallet or the like to apply force by crushing. Even if you want to make a small hole or cut small by inserting a thin crushing tool with a tip such as pliers from a small hole or cut in a piece of paper after breaking and crushing the plaster mold of According to the size of the cut, it is possible to further break up and discharge the small pieces of gypsum inside.

  In the invention described in claim 11, after the paper adhering step B or after the paper drying step C, part or all of the surface of the paper adhering to the gypsum mold is averaged with a leveling tool such as a ridge. By pressing, it is possible to level the unevenness of the fibers in the leveled and pressed portion and form the paper surface thin and smooth, and to express finer and smaller unevenness.

In the invention described in claim 12, after the paper drying step C or the gypsum discharge step D, printing is performed on the surface of the dried paper. Can be obtained.
At that time, if there is a plaster mold inside, it is possible to print on the surface of the paper by pressing, and from the surface of the hollow paper, it is possible to print various designs by ink spraying dots Become.

  In invention of Claim 13, after the said gypsum discharge process D, the surface of paper is coated with resin etc., the fiber of paper is hardened with the resin, and the intensity | strength and water resistance of paper are improved. It becomes possible to color with the color of the paint. And it can be decorated outdoors exposed to rainwater.

It is a flowchart which shows the manufacturing process of the paper surface three-dimensional molded item of this invention. It is a flowchart which shows a gypsum type | mold creation process. (A) of a paper adhesion process is each flowchart which shows the form which uses a normal slurry and (b) uses a colored slurry, respectively. It is a flowchart which shows the paper adhesion process of the form which sprays. It is a flowchart which shows a gypsum discharge | emission process. It is a flowchart of the gypsum discharge process of the form using a crushing tool. It is a flowchart of a gypsum mold creation process. It is a flowchart which shows a paper adhesion process. It is a flowchart which shows another paper adhesion process. It is a flowchart which shows the process after a drying process. It is a flowchart which shows the case where it prints after a gypsum discharge process. It is a flowchart which shows the case where it coats after a gypsum discharge process. It is each perspective view which shows the three-dimensional molded item (I) used as a prototype, and a container (B). It is a perspective view which shows the state which made the three-dimensional molded item embed | buried in silicon resin. It is a perspective view which shows the state which took out the silicon resin which put the three-dimensional molded item from the container. It is a perspective view which shows the silicon resin type | mold from which the three-dimensional molded item was extracted. It is a perspective view which shows the state which provided the gypsum pouring hole in the silicone resin type | mold. It is a perspective view which shows the state which takes out a gypsum type | mold from a silicon resin type | mold. It is each perspective view which shows the state which has attached (b) which shows the state which has adhered the small piece of wet paper to the plaster mold, and (b) has completed the attachment. It is a perspective view which shows the state which provided the cut | interruption in the bottom part of the three-dimensional molded item of paper adhering to the plaster mold. (A) shows the state which provided the hole in the bottom part of the three-dimensional molded article of paper adhering to the gypsum mold, (b) is each perspective view which shows the state which has taken out the small piece of gypsum from the hole in the bottom part. It is a perspective view which shows the state which isolate | separated the main body and protrusion part of the three-dimensional molded item. It is a perspective view which shows the state which divided | segmented the main body of the three-dimensional molded item. It is a perspective view which shows the state which put the light bulb in the plaster mold. It is a perspective view which shows the state in which the metal is embedded in paper. It is a perspective view which shows the example which used this invention as illumination.

The form for implementing the manufacturing method of the paper surface three-dimensional molded item of this invention is demonstrated with a figure below.
As shown in FIG. 1, the production process of the present invention is a paper raw material obtained from a slurry containing a gypsum mold creating process A for forming a gypsum mold having a hollow inside and a fiber material and a binder. From the surface of the dried paper that covers the gypsum mold, and the paper drying process C that dries the paper raw material that adheres to the surface of the gypsum mold. Is added to the gypsum discharging step D in which the gypsum mold in the inside is finely crushed and a small piece of gypsum crushed from a hole or cut formed in a part of the paper is discharged.
A paper surface three-dimensional model is obtained at the end of the above process.

Next, the above steps will be described in detail.
In the gypsum mold creating step A, a method using a silicon resin and other methods are possible.
In the method using a silicon resin, as shown in FIG. 2, the three-dimensional object to be a prototype is submerged in a liquid silicon resin placed in a container to promote curing, and the cured silicon resin is taken out from the container. The resin is cut open and the original three-dimensional model is taken out to obtain a silicon resin mold.
This will be described with reference to an example in which the three-dimensional object is a pot. As shown in FIG. 13, the three-dimensional object 1, which is the original pot, is accommodated in a larger number of containers 2. Then, as shown in FIG. 14, the container 2 is filled with the liquid silicone resin 3a, and the curing is waited for a while. Thereafter, as shown in FIG. 15, the cured silicon resin 3 b is taken out from the container 2.
Next, as shown in FIG. 16, the silicon resin 3 b is cut open by dividing it into half or the like, and the original pot is taken out to obtain the silicon resin mold 4. Reference numeral 5 in FIG. 16 denotes an inner mold cavity portion 5 that is made hollow by taking out the pot.

Next, as shown in FIG. 17, the silicon resin molds 4 a and 4 b divided into two parts are merged in their original positions, and gypsum connected to the inside of the inner mold cavity 5 from outside is partly attached to the silicon resin mold 4. A gypsum pouring hole 6 for pouring is provided, and gypsum dissolved in water is poured from the gypsum pouring hole 6 into the inside.
FIG. 17 shows that the position of the gypsum pouring hole 6 is provided in the lid portion of the pot, but when it is completed by subsequent excision, it may appear like a step or a seam. For example, it may be provided on the bottom part (such as the bottom of the pot) of the three-dimensional model.
At this time, in order to form a gypsum dissolved in water on the surface with a hollow inside, stop pouring in a small amount of gypsum that is about 1/4 or less than the volume of the inner cavity 5 and slowly Rotate in all directions and continue to rotate for several minutes so that the entire surface is plastered with gypsum.
Then, gypsum hardens in the state where the surface was thinly formed, and when it is left to stand after rotating, the gypsum mold 8 cured with the thin surface remaining is obtained.
Then, after waiting for the strength of the cured gypsum to develop, the silicon resin mold 4 is separated from the cracks, and the gypsum mold 8 inside is taken out as shown in FIG.
The gypsum pouring hole filling portion 7 formed by the gypsum pouring hole 6 is cut off to complete the gypsum mold 8 in the gypsum mold creation step A.

In the method using the silicon resin, the original model of the three-dimensional object 1 is completely submerged in the liquid silicon resin 3a, so that the silicon resin mold 4 of the three-dimensional object 1 that is almost the same as the original is obtained. A pot gypsum mold 8 formed on the surface is obtained.
The gypsum mold 8 obtained in this way is a three-dimensional shaped object 1 having a finely concavo-convex asperity, and it is possible to produce a three-dimensional and complicatedly shaped unevenness in a realistic manner. Become.

Also, in the method that does not use silicon resin, as shown in FIG. 2, the original three-dimensional object is manufactured with a wax that can be melted by heating, and a thin plaster is applied to the surface of the three-dimensional object. After the gypsum is cured, it can be heated to melt the wax inside, and a gypsum mold with a hollow inside and a thin surface can be obtained.
In addition, the original three-dimensional model is made of clay, thinly plastered on the surface of the three-dimensional model of the clay, and after the gypsum has hardened, the clay inside is scraped to produce a gypsum mold with a hollow interior. It is also possible.

Next, the paper adhering step B in which the paper raw material obtained from the slurry containing the fibrous material and the binder is adhered to the entire surface of the gypsum mold will be described.
The paper adhering step B can be performed either when using the paper as shown in FIGS. 3A and 3B or when spraying the paper material as shown in FIG.

In the case of using the paper that has been made, Japanese paper made from mud mixed with bark, which is a raw material of Japanese paper, such as Kozo, Mitsumata and Ganpi, and a binder is suitable for use.
Also, it is only necessary to obtain a wet piece of paper such as pulp or glue, so that paper products such as waste paper are returned with water to make a slurry, and this slurry is drawn on a net. It can be used.
Then, as shown in FIG. 3A, the paper that has been made is removed from the net while being wet and cut into small pieces. Then, when cutting, the paper that has been peeled off from the net is cut into small pieces and then drained, or the water is drained and then cut into small pieces. A small piece is obtained.
It can be cut with a pinch, but if you cut it by hand, the cut will not be straight, so the seam will be less noticeable when pasted.

Then, as shown in FIG. 19A, a plurality of layers of wet paper pieces 9a are pasted on the entire surface of the plaster mold 8 so as to have a substantially uniform thickness.
At this time, the first layer is affixed to the entire surface so that a part of the small pieces of paper 9a overlap each other, and then the second and subsequent layers are overlapped in the same manner.
When pasted in several layers in this way, as shown in FIG. 19B, the joints between the small pieces 9a cannot be made, and the surface is stretched in a uniform state.
At that time, if the paper is cut into pieces and stretched, the smaller the cut-out size, the denser the lamination corresponding to the fine irregularities on the surface of the gypsum mold. As a result, even extremely small irregularities can be expressed.

  In addition, in the case of spraying the paper raw material shown in FIG. 4, by using a slurry of the same raw material as that of the above-mentioned Japanese paper, or a slurry mixed with pulp, glue, etc., the spraying device can cause unevenness on the entire surface of the plaster mold. It is possible to spray mud evenly so that there is no. In this way, the paper raw material adheres naturally without a joint.

Next, a paper drying process C for drying the paper raw material attached to the surface of the gypsum mold will be described.
This drying method can be left to dry naturally and forced to dry with a dryer.
In any of the drying methods, the paper layer is thinned and dried so that the paper to be shrunk as the paper dries, and the gypsum mold is tightened, and fine irregularities appear more clearly at this time.
At this time, as shown in FIG. 3 (b), if a coloring material is mixed in the slurry, a paper material colored in a single color or a plurality of colors can be obtained at this time, and the whole can be colored. Can be obtained.

  Next, the gypsum discharging step of applying a force from the surface of the dried paper to cover the gypsum mold and finely crushing the gypsum mold inside, and discharging small pieces of gypsum crushed from holes or cuts provided in a part of the paper D will be described.

  In this step, as shown in FIG. 5, a force is applied from the surface of the dried paper 9b to finely crush the gypsum mold 8 inside, and then a hole 10 (in FIG. 21 (a)) opened in a part of the paper 9b. Or a crushed plaster piece 8a from the cut 11 (shown in FIG. 20), or a force is applied from the surface of the dried paper 9b after making a hole 10 or cut 11 in a part of the paper 9b. The gypsum mold 8 may be finely crushed and all of the crushed gypsum pieces 8a may be discharged as shown in FIG.

Further, in the gypsum discharging step D, as shown in FIG. 6, when a hole 10 or cut 11 is opened in a part of paper and crushed, a crushing tool such as a thin pliers is inserted through the hole 10 or cut 11 to form gypsum. By crushing into small pieces, it becomes possible to pulverize the gypsum in the small holes 10 or cuts 11 that are not conspicuous so that the tip of the pulverizing tool can enter.
This method is particularly effective when it is desired to make the hole 10 and the cut line 11 as small as possible.

In the present invention, the gypsum mold is crushed and discharged in the above steps, and a paper surface three-dimensional model is completed.
The paper surface three-dimensional object of the present invention thus produced not only has a seamless finish on the whole, but also has the unique soft and warm feel of the paper material and can reproduce the various shapes of the object.
At that time, even a variety of shaped objects having various shapes of large and small shapes in which the prototype of the three-dimensional shaped object is intricately complicated can be reproduced in detail.
For this reason, the application of the present invention is most suitable for an object in an ornamental room, and in particular, as shown in FIG. 26, if a light source such as an electric lamp provided inside is used to emit light as shown in FIG. A variety of beautiful and seamless objects, which express the gradation of light transmitted through the skin peculiar to natural fibers of paper, makes it possible to create a refined and gentle atmosphere in the indoor space.

  Next, in the present invention, the following various forms are possible.

One of them is as shown in FIG. 7, in the gypsum mold creating step A, as shown in FIG. 22, the small projection portion 1b of the three-dimensional model 1 to be a prototype is separated from the main body 1a of the model, All the cuts are closed with clay, etc., once each thin gypsum mold with cavities formed is produced, and those gypsum molds can be restored and integrated with the original prototype It is.
This method is suitable for a case where it is desired to reproduce various details of a three-dimensional object having irregularities of various shapes of large and small shapes in which the prototype is complicated.
If the original three-dimensional model has a small protrusion as shown in FIG. 22, when it is integral with the main body 1a, it is difficult to form a cavity inside the protrusion due to clogging of the protrusion. It becomes. If there is no cavity, the plaster clogged in the protruding portion cannot be easily removed.
This is because when the gypsum is crushed, damage such as deformation or tearing of the paper occurs, and when trying to avoid the damage, the gypsum cannot be crushed.
Therefore, if the protruding portion 1b is separated from the main body 1a of the modeled object and the protruding portion 1b is made of another gypsum mold, it is easy to form a thin surface and provide a cavity inside the protruding portion 1b even if the protruding portion 1b is small. Become.
Thus, the gypsum whose inside is hollow and thinly formed can be easily crushed into small pieces or powder, and even if the base of the protruding portion 1b is thinly connected, it is finely crushed. A small piece of plaster can be discharged to the outside.

Further, as shown in FIG. 23, the three-dimensional model 1 as a prototype is divided into a main body 1a and a divided portion 1c of the main body into a plurality of parts, and all cuts are closed with clay or the like, and once separated separately. It is also possible to produce a gypsum mold with a hollow inside whose entire surface is thin, and restore and integrate these gypsum molds by aligning them with the original prototype.
In this method, a lighting tool such as a light bulb 14 larger than the hole 10 for discharging a small piece of gypsum in a cavity of a finished three-dimensional model of paper is adjusted to the size of the lighting tool. The paper can be stored without cutting it into large pieces. In this way, a beautiful three-dimensional model made of paper can be obtained which has no seam on the surface where a large illuminating device or the like is stored in the cavity.

In other words, in this step, a three-dimensionally shaped object is created by combining the joint surfaces of the gypsum mold 8 of the main body 1a and the divided portion 1c, and the three-dimensional model is created, but when connecting the gypsum molds, as shown in FIG. As described above, the split hole 13 is created by destroying the plaster on the boundary surface to be joined so as to have a size for inserting a light bulb or the like.
Then, after the lighting device such as the light bulb 14 is accommodated through the split hole 13, as shown in FIG. Create a three-dimensional model.
Thereafter, paper is attached to the surface of the gypsum mold in the paper adhering step B, and then the paper is dried. Thereafter, the gypsum mold is crushed with care so as not to damage the lighting device such as the light bulb 14. When the fine gypsum in the inside is discharged from the hole 10, a beautiful paper surface three-dimensional object with a large lighting fixture is obtained.
Further, in this method of obtaining a divided gypsum mold, even a very large three-dimensional model can be easily manufactured by dividing it into small pieces.

Further, in the paper attaching step B, as shown in FIG. 8, by forming a part of the paper raw material adhering to the gypsum mold in a thinner layer or a thicker layer than the surroundings, It is possible to form an arbitrarily thin watermark or shadow on the part.
When the watermark part and the shadow part are used with illumination in them, the watermark part becomes brighter than the surroundings, and the shadow part becomes darker than the surroundings, and the change in the shading can be enjoyed.
At that time, when a pattern or a pattern is put in the watermark portion, it rises from the surroundings and looks beautiful.
When a part is formed in a thick layer, the strength of the elongated part or the part that protrudes to the side and easily bends can be increased. Can be prevented.

Furthermore, in the paper adhesion step B, it is also possible to enclose different kinds of paper or design materials other than different kinds of paper between the adhesion layers of the adhering paper raw material, and this part has a clear periphery so that the seal can be attached to the surface. They are not distinguished from each other, and the entire design of these materials can be integrated so as to become familiar with the paper, and can be formed so as to emerge as a light shade. Since this material is sealed between paper layers, there is no risk of peeling off later.
For example, if a material such as a plant leaf or a petal is used as a material, it is possible to enjoy a natural atmosphere different from that drawn with a brush.
In addition, when the material to be contained is a strong material of metal, plastic, or plant, it is possible to reinforce the used portion and reinforce the weak portion of the paper that is thin and easily deformed.
In addition, when enclosing metal, as shown in FIG. 25, if an annular metal plate 12 is embedded in the bottom, it becomes possible to stably install it on the top of the table that decorates the paper surface three-dimensional object. Depending on the position of use, partial reinforcement is possible.
FIG. 25A shows that the first layer of the paper 9a wetted on the plaster mold 8 is being adhered. FIG. 25 (b) shows a process in which the metal plate 12 is placed on the first layer, and the second layer of paper 9a is attached and embedded from above.
In addition, when the main body of a paper surface three-dimensional object is divided into multiple parts, metal wires and plates are embedded in the opposite sides of the parts that are to be connected later, so that they can be fitted, or metal such as iron By using a permanent magnet together with a permanent magnet, it is possible to achieve a stronger and stronger bond than paper.

  Further, as shown in FIG. 9, after the paper adhering step B or as shown in FIG. 10, after the paper drying step C, a part or all of the surface of the paper adhering to the gypsum mold is averaged such as wrinkles. By pressurizing with a tool, it becomes possible to level the unevenness of the fibers of the leveled and pressed portion and form the paper surface thin and smooth, and to express the paper surface with finer and smaller unevenness. It becomes possible.

  Furthermore, as shown in FIG. 11, it is possible to obtain more various designs by printing on the surface of the dried three-dimensional paper after the paper drying step C or the gypsum discharging step D. At that time, if there is a plaster mold inside, it is possible to print on the surface of the paper by pressing, and from the surface of the hollow paper, it is possible to print various designs by ink spraying dots Become.

  And as shown in FIG. 12, after the said gypsum discharge | emission process D, the surface of paper can be painted with resin. Since it is a paper coating, a wide variety of coating materials can be selected, but by applying acrylic resin or the like to harden the paper fibers, the strength and water resistance of the paper can be increased, and the color of the paint can also be colored. It becomes possible. The finished product can be installed even outside the room exposed to rainwater.

  The method for manufacturing a paper surface three-dimensional object according to the present invention relates to a method for manufacturing a three-dimensional paper object with a hollow inside and a three-dimensional surface. It is also possible to apply it to the production of a surface three-dimensional object using an object.

DESCRIPTION OF SYMBOLS 1 3D modeling object used as a prototype 1a 3D modeling body part 1b 3D modeling projection part 1c 3D modeling body separation part 2 Container 3a Liquid silicone resin 3b Cured silicone resin 4 Silicone resin mold 4a Silicone resin mold 4b Silicone resin mold 5 Internal mold cavity 6 Plaster pouring hole 7 Plaster pouring hole filling part 8 Plaster mold 8a Plaster piece 9 Paper piece 9a Wet piece of paper 9b Dry paper 10 Hole 11 Cut 12 Metal plate 13 Split hole 14 Light bulb A Gypsum mold creation process B Paper adhesion process C Paper drying process D Gypsum discharge process

Claims (13)

  A paper in which a gypsum mold forming step (A) for forming a gypsum mold with a thin inside formed on the entire surface, and a paper raw material obtained from a slurry containing a fibrous material and a binder is attached to the entire surface of the gypsum mold. An adhesion step (B), a paper drying step (C) for drying the paper raw material attached to the surface of the gypsum mold, and a gypsum mold inside by applying force from the surface of the dried paper covering the gypsum mold A gypsum discharge step (D) for finely crushing and discharging small pieces of gypsum crushed from holes or cuts provided in a part of paper, and a method for producing a paper surface three-dimensional structure.   In the gypsum mold creation step (A), the projection part is separated from the main body of the modeled object, and once the whole surface is formed thinly separately from the projection part and the main body part, the inside is hollow gypsum 2. The paper surface three-dimensional modeling according to claim 1, wherein a mold is manufactured, and each gypsum mold is integrally fixed to a position of the original prototype to obtain a gypsum mold that is restored to a three-dimensional modeled object. 3. How to make things.   In the gypsum mold creation step (A), the main body of the three-dimensional structure to be the prototype is divided into a plurality of parts, and once separated from the main body and the divided part of the main body, the entire surface is thinned to form a hollow gypsum mold 3. The paper surface solid body according to claim 1, wherein each of the gypsum molds is integrally fixed to a position of the original prototype to obtain a gypsum mold restored to the original three-dimensional model. How to make a model.   In the gypsum mold creation step (A), when creating a gypsum mold having a hollow interior with the entire surface thinly formed, the three-dimensional modeled object that becomes the prototype of the gypsum mold is buried in a liquid silicone resin in a container, and the silicon After the resin is cured, the silicon resin is taken out of the container, and is cut open to take out the original three-dimensional modeled object, and an internal silicon resin mold that imitates the outer shape of the three-dimensional modeled object is created. Pour in a small amount less than half of the volume of the inner cavity, and slowly rotate the silicone resin mold for several minutes so that the entire surface of the cavity is covered with gypsum film. The paper surface three-dimensional structure according to any one of claims 1 to 3, wherein the inside of the thinly formed entire surface is made into a hollow gypsum mold after the fluidity of the liquid is stopped. Method.   In the paper adhering step (B), the paper raw material is a paper raw material obtained by drawing a slurry of a slurry containing a fibrous material and a tie material with a net and draining it. The method for producing a paper surface three-dimensional structure according to any one of claims 1 to 4, wherein the plurality of layers are attached to the entire surface of the gypsum mold so as to have a substantially uniform thickness.   The paper raw material is a paper raw material obtained by draining a slurry containing a fibrous material and a binder in the paper adhering step (B), and the wet paper raw material is sprayed onto a gypsum mold to attach the paper raw material. The manufacturing method of the paper surface three-dimensional molded item in any one of -4.   The paper surface according to any one of claims 1 to 6, wherein in the paper adhering step (B), a part of the paper raw material adhering to the gypsum mold is formed in a thinner layer or a thicker layer than the surroundings. Production method of 3D objects.   The paper surface three-dimensional modeling according to any one of claims 1 to 7, wherein, in the paper adhering step (B), a paper raw material colored in a single color or a plurality of colors using a colored slurry is used. How to make things.   9. The paper adhering step (B), wherein any material of paper, metal, plastic, or plant different from the paper raw material is contained between the adhering layers of the paper raw material to be attached. The manufacturing method of the paper surface three-dimensional molded item in any one.   The paper product according to any one of claims 1 to 9, wherein, in the gypsum discharge step (D), a crushing tool is inserted through a hole or a cut provided in the paper, and a small piece of gypsum is further crushed and discharged. Manufacturing method of surface solid modeling.   The method for producing a paper surface three-dimensional structure according to any one of claims 1 to 10, wherein a part of the surface of the paper attached to the plaster mold after the paper attaching step (B) or after the paper drying step (C). Alternatively, a method for producing a three-dimensional surface product made of paper, characterized in that the whole surface is smoothed and pressed with a leveling tool, and the surface of the leveled and pressed portion is formed thin and smooth.   In the manufacturing method of the paper surface three-dimensional molded item in any one of Claims 1-11, printing is performed on the surface of the dried paper after a paper drying process (C) or a gypsum discharge process (D). A method for producing a featured three-dimensional paper surface.   13. The method for producing a paper surface three-dimensional structure according to claim 1, wherein a part or all of the surface of the paper is coated after the gypsum discharging step (D). Manufacturing method of surface solid modeling.

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