JP4716211B2 - Paper molded body manufacturing method and paper molded body manufacturing apparatus - Google Patents

Description

   The present invention relates to a paper molded body manufacturing method, a paper molded body manufacturing, and a paper molded body, and in particular, a paper molded body manufacturing method and paper molding capable of easily and repeatedly manufacturing a seamless paper molded body. The present invention relates to a body manufacturing apparatus and a paper molded body.

  As a method for producing a paper molded body, for example, a method as shown in FIG. 4 has already been proposed.

In this method, a plurality of string-like members 102 having a fluffy surface are arranged on the surface of a prototype 101 made of a destructible material and having a desired three-dimensional shape. A paper solution containing vegetative fiber, and a paper solution containing vegetable fiber 103 and velvet on the surface, drying the string-like member 102 and the vegetable fiber 103 to destroy the original 101 and forming a Japanese paper product. The prototype 101 that has been destroyed is taken out from the inside of the machine.
Japanese Patent Laid-Open No. 05-156594 (2nd to 3rd pages, FIG. 1)

  Moreover, when manufacturing something like “Dharma”, there is an outer screen paper making method. In this method, first, a pair of molding dies formed by molding a half part of a Dharma shape (when a pair of molded bodies are closed, a recess having a Dharma outer shape is formed therein. ). The pair of molds are provided with a stock liquid injection pipe and a stock liquid discharge pipe. The pair of molds are closed, and the pair of molds are closed from the stock liquid injection pipe. The stock liquid can be poured into the pair of molding dies, or the stock liquid injected into the pair of molding dies in a closed state can be discharged from the stock liquid discharge pipe.

  Next, after attaching a net to the inside of each of the pair of molds so as to extend along the recesses of the mold, the pair of molds is closed.

  Next, the stock liquid is poured into the space between the pair of molds and the net that are in a closed state, the liquid stock is sucked and discharged from the inside of the net, and the net attached to the pair of molds. After the stock liquid is adhered to the surface of the paper and dried, a pair of molds are opened to take out a paper dharma.

  In addition, conventionally, a cylindrical paper molded body forms a marginal surface on one surface of a pair of sides of a plane-shaped paper (ordinary paper) arranged opposite to each other, and the surface of one side and / or the other side. It is produced by a method in which a paste is attached to the back surface of one side, and the back surface of the other side is bonded to a marginal surface on the surface of one side.

  However, when a paper molded body is manufactured by the method shown in FIG. 4, there is a problem that nonuniform overlap of fibers and / or fiber bundles occurs in the paper molded body.

  Further, when a paper molded body is manufactured using the dharma manufacturing method, there is a problem that a line is formed at a location corresponding to the contact surfaces of the pair of molds.

In addition, for example, when the above-described conventional cylindrical paper molded body is used as a shade of a lighting fixture, when the lamp of the lighting fixture is turned on, the marginal surface portion when the paper is turned into a cylindrical shape is different. There is a problem that it appears different from the side surface of, and looks bad,
The present invention has been made to solve the above-described problems, and can produce not only a small molded body but also a large paper molded body. In addition, fibers and / or fiber bundles can be produced on the paper molded body. Non-uniform overlap does not occur, and no line is formed on the surface thereof, and a method for producing a paper molded body capable of easily and repeatedly producing a seamless paper molded body, and such a paper molded body easily An object of the present invention is to provide a paper molded body manufacturing apparatus suitable for repeated manufacturing.

The method for producing a paper molded body according to claim 1 is a state in which a net made of a three-dimensional shape and made of a shape memory material is immersed in a solution in which a paper raw material is dispersed in a solution storage tank. A method for producing a paper molded body in which paper is made on the surface of the net, the paper molded body having a desired three-dimensional shape on the surface of the net that is three-dimensionally formed and made of a shape memory material From the inside of the desired three-dimensional shape paper molded body made on the surface of the net made of a shape memory material, the volume of the net shape is made smaller, and the shape is made of a shape memory material. When the three-dimensional shape and the net made of the shape memory material are taken out and the next paper molded body is manufactured, the shape is crushed, the three-dimensional shape and the shape memory material The net made in (1) is restored to its original shape, and the following paper compacts are sequentially manufactured .
Method for producing a molded paper body according to claim 2 is the method for producing a molded paper body of the mounting serial to claim 1, the solution storage tank, upon starting the injection of the dispersed solution paper stock, solid The water level in the net made of shape memory material and the water level of the solution in which the paper raw material injected into the solution storage tank is dispersed are maintained in substantially the same manner, and is formed into a three-dimensional shape. , Until the net made of the shape memory material is submerged in the solution in which the paper raw material in the solution storage tank is dispersed, and the paper is put on the surface of the net made of the shape memory material. When drawing, the water level in the net made of three-dimensional shape and made of shape memory material is always adjusted to be the same or slightly lower than the water level of the solution in which the paper raw material in the solution storage tank is dispersed. I did it .

  Here, the term “making paper on the surface of a net” used in the present specification includes a step of depositing a paper raw material on the net using a net and / or a net in a solution in which the paper raw material is dispersed in advance. The process of making the state immersed.

  In addition, the term “making paper on the surface of a net” used in the present specification includes a step of depositing a paper raw material on the net using a net and filtering water under the net at that time.

  In addition, the term “paper” used in this specification includes Japanese paper, Western paper, mixed paper of Japanese paper and Western paper, or resin fibers, metal fibers, glass fibers, ceramic fibers, carbon fibers, etc. Includes mixed paper and other mixed paper.

  In the method for manufacturing a paper molded body according to claim 2, the three-dimensional net used in the method for manufacturing a paper molded body according to claim 1 is a bag shape or a cylindrical shape.

  Here, the term “bag shape” used in the present specification is a spherical shape, a substantially ellipsoidal shape when viewed in plan, such as a rugby ball or egg shape, and also a cubic shape, a rectangular parallelepiped shape, other polygonal shapes, a triangular shape, etc. Cavity, quadrangular pyramid, other polygonal cones, cones, elliptical cones, other cones whose bottom surface is formed with a free curve, and hollow parts whose side surface is formed with a free curve such as a glove shape It means the shape you have.

  In addition, the term “cylindrical shape” used in the present specification is a circular shape that is elongated and hollow, and its external shape is a quadrangular prism, a cylindrical shape, a substantially cylindrical shape, or a side peripheral surface is free. It means a shape having a hollow portion formed by a curve.

The paper molded body manufacturing method according to claim 3 is a three-dimensional shape of the paper molded body manufacturing method according to claim 1 or claim 2, and the net made of a shape memory material is a bag shape. Or it is a cylindrical shape.

  The net is not particularly limited as long as it is made of a shape memory material, and is preferably one that is restored to a spherical or other bag shape, a cylindrical shape, or other three-dimensional shape in the paper making process.

  Further, the term “shape memory material” used in the present specification may be a shape memory resin or a shape memory alloy.

In the method for producing a paper molded body according to claim 4, the shape memory material of the method for producing a paper molded body according to any one of claims 1 to 3 is a shape memory alloy or a shape memory resin.

The method for manufacturing a paper molded body according to claim 5 is the method of manufacturing a paper molded body according to any one of claims 1 to 4 , wherein the net is made into a three-dimensional shape and made of a shape memory material . It is composed of multiple parts and can be assembled and disassembled.

The apparatus for producing a paper molded body according to claim 6 includes a solution storage tank for storing a solution in which paper raw materials are dispersed;
A net attaching portion for attaching a net provided in the solution storage tank;
To the net attachment portion, a net is made into a three-dimensional shape and made of a shape memory material, and then
In the solution storage tank, a solution in which paper raw materials are dispersed is stored,
After the desired three-dimensional shape paper molding is made on the surface of the mesh made of the shape memory material, the shape of the mesh made of the shape memory material is made. The shape is made to be a three-dimensional shape from the inside of the desired three-dimensional shape paper molded body made on the surface of the net made of the three-dimensional shape and made of the shape memory material so that the volume becomes small, and the shape memory material When taking out the net made in the process and manufacturing the next paper molded body, the net is made into a three-dimensional shape and made of a shape memory material. Then, the original paper shape is restored, and the following paper compacts are sequentially manufactured.
The paper molded body manufacturing apparatus according to claim 7 is provided in a solution storage tank for storing a solution in which a paper raw material is dispersed and a lower position of the solution storage tank, and discharges the solution stored in the solution storage tank. A first drain pipe, a drain valve in the solution storage tank provided in the first drain pipe, a supply drain pipe for supplying and draining water, and the first, second and second A supply drainage pipe having a T-shaped joint having 3 connection ports, a second drainage pipe, and a water supply pipe, for supplying and draining water, has one end portion in the solution storage tank. Inside the solution storage tank of the supply drainage pipe that is provided so as to protrude, is formed into a three-dimensional shape, attaches a net attachment part for attaching a net made of shape memory material, and supplies and drains water Attach a net made of shape memory material, which is provided so as to protrude into the three-dimensional shape The end opposite to the net attachment part is connected to the first connection port of the T-shaped joint, the second drain pipe is connected to the second connection port of the T-shaped joint, and the water supply pipe is Connected to the third connection port of the character joint, the second drainage pipe is provided with a drainage amount adjustment valve for stopping drainage of the solution stored in the solution storage tank and adjusting the drainage amount The water supply pipe is provided with a water supply amount adjustment valve for stopping the supply of water into the solution storage tank and adjusting the water supply amount.

The paper molded body manufacturing apparatus according to claim 8 is a three-dimensional mesh used for the paper molded body manufacturing apparatus according to claim 6 or 7 and made of a shape memory material. It is a shape or a cylindrical shape.

In the paper molded body manufacturing apparatus according to claim 9 , the shape memory material used in the paper molded body manufacturing apparatus according to any of claims 6 to 8 is a shape memory alloy or a shape memory resin.

The paper molded body manufacturing apparatus according to claim 10 is an assembly in which a three-dimensional net used in the paper molded body manufacturing apparatus according to any one of claims 6 to 9 is composed of a plurality of parts.・ It can be disassembled.

  Here, the term “seamless” used in the present specification means that the paper molded body does not have a joint or a joining surface for making a three-dimensional shape.

  In addition, since the paper molded body according to the present invention is formed by a paper making process in which a solution in which a paper raw material is dispersed is made using a net, the paper raw material fibers are formed in the thickness direction of the paper to be formed. On the other hand, they are stacked vertically or substantially vertically.

In the manufacturing method of the paper molded object of Claim 1 or Claim 2 , in the process of making a paper using the net made into a three-dimensional shape and made of a shape memory material, the net is made into a spherical or other three-dimensional shape. Since the paper material is made to be held and immersed in a solution in which the paper raw material is dispersed, and the paper is made on the surface of the net, the desired three-dimensional paper molding is formed on the surface of the net. Can be manufactured.
That is, in the method for producing a paper molded body according to claim 1 or 2 , since the mesh is made into a three-dimensional shape and is made of a shape memory material, the paper molded body is formed on the surface of the mesh. The paper molded body can be obtained by folding, crushing, or pulling the net so that its volume is reduced, and taking it out of the paper molded body.
In addition, in this method for producing a paper molded body, a three-dimensional net is made of a shape memory material, and thus a desired three-dimensional paper molded body is manufactured on the surface of the desired three-dimensional net. After that, the shape of the net is crushed so that the volume is reduced, and it can be taken out from the inside of the desired three-dimensional shaped paper molded body, and when the next paper molded body is produced, the shape is crushed. The net in the state can be restored to its original shape, and the following paper moldings can be produced sequentially according to the present invention.
That is, in this method of manufacturing a paper molded body, a three-dimensional shape and a net made of a shape memory material are used. Therefore, by repeatedly using a net made of a shape memory material, a three-dimensional shape paper is obtained. The molded body can be easily and repeatedly manufactured.

  Further, since paper is made on the surface of the net, a seamless paper molded body can be manufactured.

In the method for manufacturing a paper molded body according to claim 3 , since a bag-shaped or cylindrical net is used, a seamless bag-shaped or cylindrical paper molded body can be manufactured.

In the method for producing a paper molded body according to claim 4 , as a net made into a three-dimensional shape and made of a shape memory material, a net made into a three-dimensional shape and made of a shape memory alloy or a shape memory resin is used. Therefore, by repeatedly using a net made of a shape memory alloy or a shape memory resin, a three-dimensional paper molding can be easily manufactured.

  That is, when a shape memory alloy is used as a net, the net that has been folded, crushed, or pulled so as to reduce its volume is heated from room temperature and allowed to pass through the transformation start temperature. Again, the desired three-dimensional shape is restored, and then a paper molded body is produced according to the present invention.

  Further, when the shape memory material is a shape memory resin, after forming a three-dimensional paper molded body on the surface of the net, heating to a predetermined temperature causes the net to be plastically deformed, and the volume of the net is reduced. The paper molded body can be obtained by folding, crushing, or pulling it down so as to be taken out from the inside of the paper molded body.

  In addition, when using a shape memory resin as a net, by raising the net that is folded, crushed or pulled so as to reduce its volume from room temperature to a high temperature (glass transition temperature Tg) or more, The net can be returned to the original three-dimensional shape.

  In the method for manufacturing a paper molded body according to claim 5, the net is composed of a plurality of parts.

That is, in the method for producing a paper molded body according to claim 5 , when paper is made, a plurality of meshes are assembled into a three-dimensional net, and the paper is made. After the molded body is prepared and the paper molded body is manufactured, the net can be taken out from the inside of the desired three-dimensional paper molded body by disassembling the net into a plurality of parts, and the next paper molded body is At the time of manufacturing, the net in a state of being disassembled into a plurality of parts can be assembled into the original shape, and the following paper molded bodies can be manufactured sequentially.

  In other words, in this method of manufacturing a paper molded body, a three-dimensional shape is formed, and the net is composed of a plurality of parts, which can be assembled and disassembled. By repeatedly using such as assembling the net or disassembling into a plurality of parts, A three-dimensional paper molding can be easily and repeatedly manufactured.

In the apparatus for manufacturing a paper molded body according to claim 6 or 7 , since a three-dimensional mesh is used as the net, it is held in a spherical or other three-dimensional shape in the paper making process. It is possible to produce a desired three-dimensional shaped paper molded article on the surface of a desired three-dimensional net by soaking it in a solution in which the paper raw material is dispersed and making paper on the surface of the net. Further, in the paper molded body manufacturing apparatus according to claim 6 or 7 , since the net is made into a three-dimensional shape and made of a shape memory material, the net made of the shape memory material is repeatedly used. By using it, a three-dimensional paper molding can be easily and repeatedly manufactured.
In the paper molded body manufacturing apparatus according to claim 6 or 7 , since paper is made on the surface of the net, a seamless paper molded body can be manufactured.

In the manufacturing apparatus of a paper molded product according to claim 6 or claim 7 is a three-dimensional shape, as the network that have been manufactured of a shape memory material, because of the use of net bag-shaped or tubular shape, seamless A bag-shaped or tubular-shaped paper molded body can be manufactured.

  Further, since paper is made on the surface of the net, a seamless paper molded body can be manufactured.

The paper molded body manufacturing apparatus according to claim 9 uses a net made of a three-dimensional shape and made of a shape memory alloy or a shape memory resin as a net made of a three-dimensional shape and made of a shape memory material. Therefore, by repeatedly using a net made of a shape memory alloy or a shape memory resin, a three-dimensional shaped paper molded body can be easily manufactured.

  In the paper molded body manufacturing apparatus according to the tenth aspect, the net is composed of a plurality of parts.

That is, in the paper molded body manufacturing apparatus according to claim 10 , when paper is made, a plurality of nets are assembled into a three-dimensional net, and the paper is made. After the molded body is prepared and the paper molded body is manufactured, the net can be taken out from the inside of the desired three-dimensional paper molded body by disassembling the net into a plurality of parts, and the next paper molded body is At the time of manufacturing, the net in a state of being disassembled into a plurality of parts can be assembled into the original shape, and the following paper molded bodies can be manufactured sequentially.

  That is, in this paper molded body manufacturing apparatus, the net is made into a three-dimensional shape, and the mesh is composed of a plurality of parts, which can be assembled and disassembled. By repeatedly using such as assembling the net or disassembling into a plurality of parts A three-dimensional paper molding can be easily and repeatedly manufactured.

  The paper molded body manufacturing method and paper molded body manufacturing apparatus according to the present invention will be described below in more detail with reference to the drawings.

  FIG. 1 is a configuration diagram schematically showing a paper molded body manufacturing apparatus according to the present invention. FIG. 1 shows a state in which the net 3 is immersed in a solution M in which paper materials prepared in advance are dispersed in order to make paper using the net 3.

  The net 3 is made of a shape memory material.

  As the net 3, when a three-dimensional paper molded body is manufactured, a three-dimensional shape is used.

  Further, the net 3 is configured so as to be able to maintain a desired three-dimensional shape in a paper making process.

  The paper molded body manufacturing apparatus 1 includes a solution storage tank 2 that stores a solution M in which paper raw materials are dispersed, and a net attachment portion 4 that is provided in the solution storage tank 2.

  The net attachment portion 4 is a stand for attaching the net 3.

  The net 3 is detachably attached to the net attachment portion 4.

  In this example, the mesh mounting portion 4 has a cylindrical shape or a substantially cylindrical shape, but the shape of the mesh mounting portion 4 is not particularly limited, and is a triangular prism shape, a quadrangular prism shape, or the like. It may be a prismatic shape such as a shape or other shapes.

  The opening of the net attachment portion 4 is connected to a supply drain pipe t1 that supplies and drains water.

  The supply drain pipe t1 is connected to the drain pipe t2, and the drain pipe t2 has a drainage amount adjustment valve for stopping drainage of the solution stored in the solution storage tank 2 and adjusting the drainage amount. v1 is provided.

  Further, a water supply pipe t3 is connected between the supply drain pipe t1 and the drain pipe t2 via a T-shaped joint C.

  The water supply pipe t3 is provided with a water supply amount adjustment valve v2 for stopping the supply of water into the solution storage tank 2 and adjusting the water supply amount.

  The solution storage tank 2 of the paper molded body manufacturing apparatus 1 includes a drain pipe t4 for discharging the liquid stored in the solution storage tank 2.

  The drain pipe t4 is provided with a solution storage tank drain valve v3.

  Next, a method for manufacturing a paper molded body according to the present invention will be described by taking as an example a case where a paper molded body is manufactured using the paper molded body manufacturing apparatus 1.

  Here, for ease of explanation, a case where a spherical paper molded body is manufactured will be described as an example.

  First, when a paper molded body is manufactured using the paper molded body manufacturing apparatus 1, the cross section is schematically shown in FIG. 2A made of a shape memory material as the net 3. Prepare a spherical net.

  Further, if necessary, the surface of the net 3 is covered with a paper net 3c used for making ordinary paper having a three-dimensional shape (in this example, a spherical shape).

  Next, the net 3 is attached to the fixture 4.

  Next, injection of the solution M in which the paper raw material that has been adjusted in advance is started into the solution storage tank 2 is started.

  Further, when the water supply amount adjusting valve v2 is set to a desired opening amount and the injection of the solution M in which the paper raw material adjusted in advance is started into the solution storage tank 2, the water level of the net 3 and the solution storage tank 2 are started. Keep the water level in the same way.

  This operation is performed until the net 3 is submerged in the solution M in the solution storage tank 2.

  The water supply amount adjustment valve v2 is closed after the net 3 is submerged in the solution M in the solution storage tank 2.

  Through the above steps, the paper molded body manufacturing apparatus 1 is in a state as shown in FIG.

  Next, the water flow adjusting valve v <b> 1 is set to a predetermined opening amount so that water is discharged from the inside of the net 3.

  When the solution M in which the paper raw material is dispersed passes through the mesh 3, the paper layer (the paper layer P shown in FIG. 3) is formed on the surface of the mesh 3 (or the paper making mesh 3c that forms the paper covered on the surface of the mesh 3). For example).

  When the paper layer (see the paper layer P shown in FIG. 3) is exposed on the surface of the mesh 3 from the solution M in which the paper raw material stored in the solution storage tank 2 is dispersed, the mesh 3 ( Alternatively, if the paper layer (see the paper layer P shown in FIG. 3) is thinner than the desired thickness on the surface of the papermaking net 3c) that forms the paper covered on the surface of the net 3, the solution is stored in the solution storage tank 2. A solution M in which the stored paper raw materials are dispersed is added, and a paper layer (refer to the paper layer P shown in FIG. 3) is formed on the surface of the net 3 (or the paper making net 3c for making paper covered on the surface of the net 3). ) Repeat the paper making process until the desired thickness is reached.

  Moreover, this process can also be performed continuously.

  When the paper layer (refer to the paper layer P shown in FIG. 3) reaches the desired thickness on the surface of the net 3 (or the paper making net 3c for making paper covered on the surface of the net 3), the solution storage is performed. The tank drainage valve v3 is opened and adjusted so as to obtain a desired drainage amount. As a result, the solution M in which the paper raw material stored in the solution storage tank 2 is dispersed is discharged from the drain pipe t4.

  Then, as soon as the solution M in which the paper raw material in the solution storage tank 2 is dispersed becomes empty, the solution storage tank drain valve v3 provided in the drain pipe t4 is closed.

  In the step of discharging the solution M, in which the paper raw material stored in the solution storage tank 2 is dispersed, from the drain pipe t4 with the drain valve v3 in the solution storage tank opened, the water level in the net 3 is discharged. However, it is always adjusted to be the same or slightly lower than the water level in the solution storage tank 2, and a paper layer (see FIG. 3c) is formed on the surface of the net 3 (or the paper making net 3c for making paper covered on the surface of the net 3). The paper layer P shown in FIG. 3 is prevented from peeling off from the net 3 (or the paper making net 3c that forms the paper covered on the surface of the net 3).

  Next, after the paper layer P is dried, the volume of the net 3 (the net 3 and the net 3c in the case where the net 3 is covered with a paper net 3c) is made to be small in volume. By crushing and removing the net 3 (the net 3 and the net 3c in the case of covering the surface of the net 3 with the net 3c) from the inside of the paper layer P, a paper molded body is obtained.

  When the next paper molded body is manufactured, if the mesh 3 is made of a shape memory alloy, the mesh 3 in a crushed shape is cooled from a high temperature to set the transformation start temperature. By letting it pass, it is restored again to a desired three-dimensional shape, and then a paper molded body is manufactured according to the present invention.

  Further, when the net 3 is made of shape memory resin, the paper layer P is dried and then the net 3 on which the paper layer P is formed (making paper on the surface of the net 3). When the net 3c is covered, the net 3 and the papermaking net 3c) are heated to a predetermined temperature so that the net 3 has plasticity, and then the net 3 (paper making paper on the surface of the net 3). When the net 3c is covered, the net 3 and the paper making net 3c are crushed so that the volume is reduced, and the net 3 (paper making the paper 3 on the surface of the net 3 is covered with the net 3c from the inside of the paper layer P). In such a case, a paper molded body is obtained by taking out the net 3 and the papermaking net 3c).

  When the next paper molded body is manufactured, if the net 3 is made of shape memory resin, the net 3 in a collapsed shape is changed from room temperature to a predetermined high temperature, and transformed. By passing the start temperature, the desired three-dimensional shape is restored again, and then a paper molded body is manufactured according to the present invention.

  If the paper molded body manufacturing apparatus and / or the paper molded body manufacturing method according to the present invention is used, when the shape of the net 3 is a spherical shape, a rugby ball or an egg shape in plan view, A seamless paper molded body having such a three-dimensional shape can be produced by adopting various shapes such as a glove-like shape.

  Furthermore, if the shape of the net 3 is a cylindrical shape, a seamless paper molded body having a cylindrical shape can be manufactured.

  Further, if the shape of the mesh 3 is changed to a shape having irregularities and various curved surfaces (free curved surface shape), a paper molded body having irregularities and shapes having various curved surfaces (free curved surface shapes) corresponding to the shape of the mesh 3 is obtained. Can be manufactured.

  Moreover, in the best mode for carrying out the invention described above, the example using the shape memory material made of the net 3 has been mainly described. However, in the present invention, a plurality of nets are used as the net 3. You may use the net | network which comprised by parts and enabled the assembly and disassembly by the fitting means etc.

  In the best mode for carrying out the invention, the term “paper” is used. However, in the paper molded body manufacturing apparatus and / or the paper molded body manufacturing method according to the present invention, “paper” is used. Includes Japanese paper, Western paper, mixed paper of Japanese paper and Western paper, or mixed paper or other paper in which resin fiber, metal fiber, glass fiber, ceramic fiber, carbon fiber or the like is mixed.

  Further, it goes without saying that the paper molded body obtained by the above-described method for producing a paper molded body may be further bent or painted for use.

  By using the paper molded body manufacturing apparatus according to the present invention and the paper molded body manufacturing method according to the present invention, a seamless thing utilizing the unique texture of Japanese paper or other paper can be used for shades of lighting fixtures, mannequins and other dolls. Can be provided to the market.

  Further, the raw material such as plastic is a fossil fuel such as petroleum products, and the present invention uses paper raw material, whereas the raw material is limited and depleted. Since the main raw materials are those obtained by growing plants, there is an advantage in that the raw materials are not depleted and are recyclable, renewable resources and environmentally friendly.

  By using the paper molded body manufacturing apparatus and the paper molded body manufacturing method according to the present invention, a seamless paper molded body can be manufactured.

It is a block diagram which shows roughly the manufacturing apparatus of the paper molded object which concerns on this invention. It is explanatory drawing which illustrates typically the principal part of the manufacturing method of the paper molded object which concerns on this invention, FIG.2 (a) shows the case where paper is made on a net | network, and FIG.2 (b). Shows a case where paper is further made on a net and a paper net is provided to make paper. It is explanatory drawing which illustrates typically the principal part of the manufacturing method of the paper molded object which concerns on this invention. It is a figure which shows schematically the manufacturing method of the conventional paper molded object.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Manufacturing apparatus of paper molded object 2 Solution storage tank 3 Net | network 4 Net | network attachment part

Claims (10)

In a state where the net made into a three-dimensional shape and made of a shape memory material is immersed in a solution in which a paper raw material is dispersed, housed in a solution storage tank, paper is made on the surface of the net, A method for producing a paper molded body,
After the desired three-dimensional shaped paper molding is made on the surface of the mesh made of the shape memory material, the volume of the mesh is reduced to make the three-dimensional shape. Taking out the net made of the shape memory material from the inside of the desired three-dimensional paper molded body made on the surface of the net made of shape memory material, and
When the next paper compact is manufactured, the net that is in a three-dimensional shape and made of a shape memory material is restored to its original shape, and the next paper is A method for producing a paper molded body, wherein the molded body is sequentially manufactured. When the injection of the solution in which the paper raw material is dispersed is started in the solution storage tank, the water level in the net made of the shape memory material and the paper which is injected into the solution storage tank is formed into the three-dimensional shape. The water level of the solution in which the raw material is dispersed is maintained substantially the same, and the mesh made of the shape memory material is submerged in the solution in which the paper raw material is dispersed in the solution storage tank. Do until
When the paper is made on the surface of the mesh made of the shape memory material, the water level in the mesh made of the shape memory material is made into the solution storage tank The method for producing a paper molded body according to claim 1, wherein the paper level is always adjusted to be the same or slightly lower than the water level of the solution in which the paper raw material is dispersed . The method for producing a paper molded body according to claim 1 or 2 , wherein the net made of the three-dimensional shape and made of a shape memory material has a bag shape or a cylindrical shape. The method for producing a paper molded body according to any one of claims 1 to 3, wherein the shape memory material is a shape memory alloy or a shape memory resin. The method for producing a paper molded body according to any one of claims 1 to 4, wherein the net made of a three-dimensional shape and made of a shape memory material is composed of a plurality of parts, and can be assembled and disassembled. . A solution storage tank for storing a solution in which paper raw materials are dispersed;
A net attaching portion for attaching a net provided in the solution storage tank;
To the net attachment portion, a net is made into a three-dimensional shape and made of a shape memory material, and then
In the solution storage tank, a solution in which paper raw materials are dispersed is stored,
After the desired three-dimensional shape paper molding is made on the surface of the mesh made of the shape memory material, the shape of the mesh made of the shape memory material is made. The shape is made to be a three-dimensional shape from the inside of the desired three-dimensional shape paper molded body made on the surface of the net made of the three-dimensional shape and made of the shape memory material so that the volume becomes small, and the shape memory material When taking out the net made in the process and manufacturing the next paper molded body, the net is made into a three-dimensional shape and made of a shape memory material. An apparatus for manufacturing a paper molded body that restores the original shape and sequentially manufactures the next paper molded body . A solution storage tank for storing a solution in which paper raw materials are dispersed;
A first drain pipe provided at a lower position of the solution storage tank, for discharging the solution stored in the solution storage tank;
A drain valve in the solution storage tank provided in the first drain pipe;
A supply drainage pipe for supplying and draining water,
A T-shaped joint having first, second and third connection ports;
A second drain pipe;
A water supply pipe,
The supply drainage pipe for supplying and draining the water is
One end portion thereof is provided so as to protrude into the solution storage tank, is formed into a three-dimensional shape, and forms a net attachment portion for attaching a net made of a shape memory material,
The supply drainage pipe for supplying and draining the water is provided so as to protrude into the solution storage tank, and is opposite to the net attachment part for attaching the net made of a shape memory material to a three-dimensional shape. Is connected to the first connection port of the T-joint,
The second drain pipe is connected to a second connection port of the T-shaped joint;
The water supply pipe is connected to a third connection port of the T-joint;
The second drainage pipe is provided with a drainage amount adjustment valve for stopping drainage of the solution stored in the solution storage tank or adjusting the drainage amount,
The apparatus for producing a paper molded body, wherein the water supply pipe is provided with a water supply amount adjustment valve for stopping the supply of water into the solution storage tank or adjusting the water supply amount. The paper molded body manufacturing apparatus according to claim 6 or 7 , wherein the net made of a three-dimensional shape and made of a shape memory material has a bag shape or a cylindrical shape. The apparatus for producing a paper molded body according to any one of claims 6 to 8, wherein the shape memory material is a shape memory alloy or a shape memory resin. The apparatus for producing a paper molded body according to any one of claims 6 to 9, wherein the net made of a three-dimensional shape and made of a shape memory material is composed of a plurality of parts, and can be assembled and disassembled. .

Images