JP2000027091A - Production of paper and apparatus therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit rapid and inexpensive production of hand-made paper or the paper made via similar process by saving the labor and the time needed for draining and pressing processes. SOLUTION: The screening frame 16 is surrounded at its lower part with a box 20 having an aspiration opening 23 that is connected to the sucking pipe 22, the pulp slurry 4 is cast on the screening frame 16 or moistened paper before draining is placed thereon, a sucking force is applied to the lower box 20 and a negative pressure is applied from the lower side, the paper stock 25 staying on the screening plate (for example, a draining board) 18 set on the girders of the screening frame 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing paper.

[0002]

2. Description of the Related Art Paper is made by suspending plant fibers and other fibers in water, rubbing the water, and tangling the fibers thinly and flatly. And then disperse it in water, rub it off with a cage, and dodge the thin layers (sheets) that result.

[0003] If a suspension of the above-mentioned plant fibers and other fibers in water is used as a pulp solution (paper stock solution), a method for producing paper called so-called paper pruning is roughly divided into two steps, a plowing step and a water cutting step. Pass.

[0004] Fig. 6 shows an example of such a case. In the figure, reference numeral 1 denotes a plow frame, which is formed by placing a net 3 or the like as a plow on a girder 2.

[0005] As a plowing process unique to Japanese paper called "sashizuki", the plow frame 1 is put into a tank 5 filled with a pulp solution 4 as shown in FIG. The scoop 1 is moved so as to scoop the stock (pulp) of the solution 4.

[0006] Once scooped, paper (pulp) is added to the net 3.
Is accumulated more than necessary, so that the excess paper is discarded and the plow 1 is moved to evenly flatten the paper (pulp) on the net 3. This operation is repeated, and the laminated stock (pulp)
The stock (pulp) is uniformly collected on the net 3 so that the thickness of the stock becomes appropriate.

[0009] In the worm cutting step, as shown in FIG. 9, the rake frame 1 is taken out and worm cutting is performed, and as shown in FIG. 10, a net 3 on which a stock (pulp) 25 is placed from the rake frame 1. Is removed, and only the stock (pulp) 25 is transferred onto the plate 6a, on which a thin gauze 7 is placed. Similarly, transfer the next stock and layer the gauze. After stacking the required number of sheets,
Water is slowly squeezed out by applying pressure to a and 6b.

Further, as shown in FIG. 12, the water is completely removed by pressing strongly with a counterweight 8 or the like.

The gauze 7 and the paper material (pulp) are taken out together, and only the paper material (pulp) is attached to a metal plate heated with warm water or the like and dried. Large-sized paper is stuck on a drying board such as a ginkgo board and dried in a greenhouse.

As another method of plowing, there is a method called “reservoir”, in which a pulp solution 4 is poured into a plow frame 1 as shown in FIG. Shake and spread evenly, and the stock (pulp)
So that it accumulates evenly.

The subsequent cutting step is the same as in the first method.

The above is a manual method for producing paper. A brief description of a method for mechanization in a paper mill or the like is a machine called a so-called paper machine, as shown in FIG. 10, blanket (felt) 11, press roll 12, dryer 13, doctor 14, etc.

The circular net 10 is made of stainless steel, rotates at high speed, and pulp (paper material) diluted with a large amount of water is supplied to the flow box 9.
Is jetted onto the circular net 10. A dewatering zone 15 for draining water is provided inside the circular net 10, which is provided with narrow slits, and instantaneously sucks moisture from the raw material spread on the net using a vacuum state.

At this time, a layer of paper containing a large amount of water is formed on the net, and a blanket (felt) 11 formed into a loop comes close to the circular net 10 and comes into contact with the net. The upper layer moves towards the finer blanket (felt) 11.

The wet paper layer moves about the blanket, and is pressed by press rolls 12 composed of upper and lower rollers to reduce the water content.

The dryer 13 is a huge iron having a cylindrical shape, and has a smooth surface like a mirror.
When the blanket (felt) 11 touches the layer, the wet paper layer separates from the blanket (felt) 11 and is pressed onto the dryer 13 and wound.

Hot air from a hot air stove is blown onto the entire surface of the dryer 13, and steam is also blown into the interior of the dryer 13, so that the moisture contained in the paper layer evaporates instantaneously, and at the same time, sterilization is performed.

The wound paper advances as the dryer 13 rotates, is peeled off by a doctor 14 as a nail, and is wound into a roll.

[0019]

As described above, in the case of manual papermaking, not only the post-processing but also the cutting and pressing steps require considerable time and labor. Also in the case of a paper machine, a dewatering zone 15 is provided, but this is a small portion with respect to the circular net, and although some water can be removed, complete dehydration cannot be performed with this. A heat drying step at 13 is required.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to reduce the labor and time required for the process of wiping and pressing when producing paper by hand or a method similar thereto, quickly and An object of the present invention is to provide a method and an apparatus for manufacturing paper which can be manufactured at low cost.

[0021]

In order to achieve the above object, the present invention provides a method for producing paper, which comprises surrounding a lower part of a plow frame with a box provided with a suction port for connecting a suction pipe, and forming a pulp in the plow frame. Pour the solution or place the wet paper before dehydration, apply suction to the lower box, and lower the paper stock collected on a water-permeable plow such as a cage laid on the girder of the plow frame. By applying a negative pressure from, to simultaneously dewater and squeeze the entire paper surface, and a water-permeable plow such as a cage has a concave and convex pattern that becomes a mold itself, by applying a negative pressure from below ,
The gist of the invention is to emboss the stock with this uneven pattern.

As a paper manufacturing apparatus, first, a lower part of a plow frame in which a water-permeable plow such as a cage is laid on a girder is surrounded by a box, and a suction pipe is connected to the box. The provision of a suction port, secondly, a water-permeable plow board such as a cage provided in a plow frame itself has a concavo-convex pattern serving as a mold, and thirdly, a water-permeable plow such as a cage. The main purpose of the plow is to lay a permeable reinforcing plate thereunder.

According to the first and third aspects of the present invention, the pulp solution is poured into the plow frame portion, or the wet paper before dehydration is placed, and the pulp solution is dewatered by applying a negative pressure from below. The process can be automatically shifted from the plowing process to the water cutting and pressing process without any work, and the paper can be dried without any hand work. Moreover, since the negative pressure from below is poured into the stationary plow frame and the pulp solution is flattened by self-leveling, it is applied to the plow frame at the same time and on the entire surface of the plow plate. In addition to efficient dewatering depending on the surface, there is no possibility that the stock (pulp) evenly spread on the plow is uneven.

According to the second and fourth aspects of the present invention, in addition to the above-mentioned effects, a water-permeable plow such as a cage has a concave-convex pattern which itself becomes a mold, so that it can be shaded from below. When pressure is applied, the pulp is simultaneously embossed with this uneven pattern, and paper having an expression on the surface can be obtained as the uneven pattern without going through a pressing step using a press machine or the like. Further, unlike the embossing by the press, the back surface becomes a substantially flat paper due to self-leveling regardless of the unevenness of the surface. For this reason, the uneven pattern on the surface has the property of not easily disappearing.

According to the fifth aspect of the present invention, when a water-permeable plow such as a cage is not strong, even if it is laid on a girder, it is deformed when dewatering by applying a negative pressure. However, such deformation can be prevented by laying a water-permeable reinforcing plate under the plow plate, and a negative pressure can be stably applied.

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the paper manufacturing method and apparatus of the present invention, and FIG. 2 is a vertical sectional side view of the same, and 16 is a plow frame.

First, the paper manufacturing apparatus of the present invention will be described. The plow frame 16 is one in which a plow plate 18 is laid on a girder 17 installed in a frame body 16a. As shown in the figure, it has a water-permeable gap (slit), and has a concave-convex pattern itself. In the case of a blind, this uneven pattern is a horizontal stripe formed by an array of thin bamboos knitted with string.

The plow plate 18 has many gaps.
There is no particular limitation as long as it has a concavo-convex pattern, and a member woven from bamboo is suitable as the plow 18. In addition to the screen,
As shown in FIG. 3, various types such as a four-knitted one (a), a basket-knitted one (b), and other nets can be used.

The material of the plow plate 18 is not particularly limited.
A synthetic resin such as a vinyl sheet having holes or a metal such as a wire net is also possible.

The lower part of the plow frame 16 is surrounded by a box 20 of the same diameter, and a suction port 23 for connecting a suction pipe (hose) 22 from a vacuum pump 21 to a side of the box 20. Provided. The position of the suction port 23 is set to a height in consideration of a dimension enough to store water on the bottom 20a of the box 20. The suction port 23 is a box
A plurality may be provided so as to face front, back, left, and right around the periphery of 20.

Further, although the plow frame 16 and the box body 20 can be integrated, they can be separated as separate bodies in the example shown.

Next, the method of the present invention using such an apparatus will be described. The pulp solution 4 or the like is poured into the plow frame 16 so as to be flat. Or put wet paper before dehydration.

Then, the vacuum pump 21 is operated, and the box 20 is turned on.
Apply suction force inside. In this way, a negative pressure is applied to the stock (pulp) 25 accumulated on the plow plate 18 stretched over the plow frame 16 from below, and water falls into the box 20 and accumulates on the bottom 20a, and the stock Dewatering (pulp) and pressing of (pulp) 25 are performed.

In order to obtain a stronger negative pressure, after dehydration by suction, a non-permeable sheet such as vinyl is placed on the stock (pulp) 25, and suction is performed again to make full use of the atmospheric pressure.

At the same time, the plow 18 itself has a concave and convex pattern which becomes a mold. When a negative pressure is applied from below as described above, the concave and convex pattern presses the stock (pulp),
Paper with an expression on the surface as an uneven pattern as shown in FIG.
You can get 26. In FIG. 4, the leftmost is the case of the blind-shaped plow plate 18 in FIG. 1, the center is the fourth case of FIG. 3A, and the right is the case of the basket of FIG.

If the paper does not need an uneven pattern, the plow 18 may be made of a flat material having no mold uneven pattern.

As shown in FIG. 5, the plow frame 16 is
a water-permeable reinforcing plate provided with small holes 19a on the girder 17 instead of directly laying the plow 18 on the girder 17 installed in a
19 may be laid, and the plow 18 may be laid thereon.

This makes it possible to prevent deformation even when the water-permeable plow 18 such as a pond does not have sufficient strength.
Negative pressure can be applied stably.

The reinforcing plate 19 may be made of any material made of wood, synthetic resin, or metal as long as it is thin and has some strength.

[0040]

As described above, the method and apparatus for producing paper according to the present invention reduce the labor and time required for the wiping and squeezing steps when producing paper by handmaking or a method similar thereto. It can be manufactured quickly and at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a paper manufacturing method and apparatus of the present invention.

FIG. 2 is a vertical sectional side view of the paper manufacturing method and apparatus of the present invention.

FIG. 3 is a plan view showing another example of a plow plate.

FIG. 4 is a plan view of the completed paper.

FIG. 5 is a perspective view showing an example of a plow frame.

FIG. 6 is a perspective view of a plow frame in a conventional example.

FIG. 7 is an explanatory view of a first step of a conventional example.

FIG. 8 is an explanatory view of a second step of the conventional example.

FIG. 9 is an explanatory view of a third step of the conventional example.

FIG. 10 is an explanatory view of a fourth step of the conventional example.

FIG. 11 is an explanatory view of a fifth step of the conventional example.

FIG. 12 is an explanatory view of a sixth step of the conventional example.

FIG. 13 is an explanatory view of a first step of another conventional example.

FIG. 14 is an explanatory view of a second step of another conventional example.

FIG. 15 is an explanatory view of a third step of another conventional example.

FIG. 16 is an explanatory diagram of a paper machine.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Plow frame 2 ... Girder 3 ... Net 4 ... Pulp solution 5 ... Tank 6a, 6b ... Plate 7 ... Shaft 8 ... Counter weight 9 ... Flow box 10 ... Circle net 11 ... Blanket (felt) 12 ... Press roll 13 ... Dryer 14 ... Doctor 15 ... Dehydration zone 16 ... Plow frame 16a ... Frame 17 ... Girder 18 ... Plow plate 19 ... Reinforcement plate 19a ... Small hole 20 ... Box 20a ... Bottom 21 ... Vacuum pump 22 ... Suction tube (hose) 23 ... Suction port 24… Tank 25… Paper (pulp) 26… Paper

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[Procedure amendment]

[Submission date] May 28, 1999 (1999.5.2
8)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

Patent application title: Method and apparatus for producing paper

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing paper.

[0002]

2. Description of the Related Art Paper is made by suspending plant fibers and other fibers in water, rubbing the water, and tangling the fibers thinly and flatly. And then disperse it in water, rub it off with a cage, and dry the resulting thin layer (sheet).

[0003] If a suspension of the above-mentioned plant fibers and other fibers in water is used as a pulp solution (paper stock solution), a method for producing paper called so-called paper pruning is roughly divided into two steps, a plowing step and a water cutting step. Pass.

[0004] Fig. 6 shows an example of such a case. In the figure, reference numeral 1 denotes a plow frame, which is formed by placing a net 3 or the like as a plow on a girder 2.

[0005] As a plowing process unique to Japanese paper called "sashizuki", the plow frame 1 is put into a tank 5 filled with a pulp solution 4 as shown in FIG. The scoop 1 is moved so as to scoop the stock (pulp) of the solution 4.

[0006] Once scooped, paper (pulp) is added to the net 3.
Is accumulated more than necessary, so that the excess paper is discarded and the plow 1 is moved to evenly flatten the paper (pulp) on the net 3. This operation is repeated, and the laminated stock (pulp)
The stock (pulp) is uniformly collected on the net 3 so that the thickness of the stock becomes appropriate.

[0009] In the worm cutting step, as shown in FIG. 9, the rake frame 1 is taken out and worm cutting is performed, and as shown in FIG. 10, a net 3 on which a stock (pulp) 25 is placed from the rake frame 1. Is removed, and only the stock (pulp) 25 is transferred onto the plate 6a, on which a thin gauze 7 is placed. Similarly, transfer the next stock and layer the gauze. After stacking the required number of sheets,
Water is slowly squeezed out by applying pressure to a and 6b.

Further, as shown in FIG. 12, the water is completely removed by pressing strongly with a counterweight 8 or the like.

The gauze 7 and the paper material (pulp) are taken out together, and only the paper material (pulp) is attached to a metal plate heated with warm water or the like and dried. Large-sized paper is stuck on a drying board such as a ginkgo board and dried in a greenhouse.

As another method of plowing, there is a method called “reservoir”, in which a pulp solution 4 is poured into a plow frame 1 as shown in FIG. Shake and spread evenly, and the stock (pulp)
So that it accumulates evenly.

The subsequent cutting step is the same as in the first method.

The above is a manual method for producing paper. A brief description of a method for mechanization in a paper mill or the like is a machine called a so-called paper machine, as shown in FIG. 10, blanket (felt) 11, press roll 12, dryer 13, doctor 14, etc.

The circular net 10 is made of stainless steel, rotates at high speed, and pulp (paper material) diluted with a large amount of water is supplied to the flow box 9.
Is jetted onto the circular net 10. A dewatering zone 15 for draining water is provided inside the circular net 10, which is provided with narrow slits, and instantaneously sucks moisture from the raw material spread on the net using a vacuum state.

At this time, a layer of paper containing a large amount of water is formed on the net, and a blanket (felt) 11 formed into a loop comes close to the circular net 10 and comes into contact with the net. The upper layer moves towards the finer blanket (felt) 11.

The wet paper layer moves about the blanket, and is pressed by press rolls 12 composed of upper and lower rollers to reduce the water content.

The dryer 13 is a huge iron having a cylindrical shape, and has a smooth surface like a mirror.
When the blanket (felt) 11 touches the layer, the wet paper layer separates from the blanket (felt) 11 and is pressed onto the dryer 13 and wound.

Hot air from a hot air stove is blown onto the entire surface of the dryer 13, and steam is also blown into the interior of the dryer 13, so that the moisture contained in the paper layer evaporates instantaneously, and at the same time, sterilization is performed.

The wound paper advances as the dryer 13 rotates, is peeled off by a doctor 14 as a nail, and is wound into a roll.

[0019]

As described above, in the case of manual papermaking, not only the post-processing but also the cutting and pressing steps require considerable time and labor. Also in the case of a paper machine, a dewatering zone 15 is provided, but this is a small portion with respect to the circular net, and although some water can be removed, complete dehydration cannot be performed with this. A heat drying step at 13 is required.

An object of the present invention is to solve the above-mentioned disadvantages of the prior art, and to reduce the labor and time required for the process of wiping and pressing when producing paper by hand or a method similar thereto, quickly and An object of the present invention is to provide a method and an apparatus for manufacturing paper which can be manufactured at low cost.

[0021]

According to the present invention, in order to achieve the above object, as a method for producing paper, a water-permeable plow board such as a cage has a concave and convex pattern which itself becomes a mold. By applying a negative pressure from above, embossing is performed on the stock with this uneven pattern.The lower part of the plow frame is surrounded by a box provided with a suction port for connecting a suction pipe, and the pulp solution is poured into the plow frame. Alternatively, place wet paper before dehydration, apply suction to the lower box, and apply negative pressure from below to the paper stock that accumulates on a water-permeable plow board such as a cage laid on the girder of the plow frame. Over
The gist of the present invention is to dewater and squeeze the entire paper surface at the same time and to emboss the stock with the concavo-convex pattern of the board.

As a paper manufacturing apparatus, firstly, a water-permeable plow plate such as a cage provided in a plow frame has a concave and convex pattern which itself becomes a mold. The lower part of the plow frame in which a stiff board is laid on a girder is surrounded by a box, and the box is provided with a suction port for connecting a suction pipe. The gist of the board is to lay a permeable reinforcing plate below it.

According to the first and second aspects of the present invention, a special pulp solution is poured into the plow frame portion, or a wet paper web is placed before dehydration, and dewatered by applying a negative pressure from below. The process can be automatically shifted from the plowing process to the water cutting and pressing process without any work, and the paper can be dried without any hand work. Moreover, since the negative pressure from below is poured into the stationary plow frame and the pulp solution is flattened by self-leveling, it is applied to the plow frame at the same time and on the entire surface of the plow plate. In addition to efficient dewatering depending on the surface, there is no possibility that the stock (pulp) evenly spread on the plow is uneven.

Also, a water-permeable plowboard such as a cage has an uneven pattern which itself becomes a mold. When negative pressure is applied from below, the pulp is simultaneously embossed with the uneven pattern. A paper having an expression on the surface as a concavo-convex pattern can be obtained without passing through a pressing step using a press machine or the like.
Further, unlike embossing by a press, the back surface of the paper becomes almost flat due to self-leveling regardless of the unevenness of the front surface. For this reason, the uneven pattern on the surface has the property of not easily disappearing.

According to the third aspect of the present invention, when a water-permeable plow such as a cage is not strong, it can be deformed when a negative pressure is applied to dewater it even if it is laid on a girder. However, such deformation can be prevented by laying a water-permeable reinforcing plate under the plow plate, and a negative pressure can be stably applied.

[0026]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a perspective view showing an embodiment of the paper manufacturing method and apparatus of the present invention, and FIG. 2 is a vertical sectional side view of the same, and 16 is a plow frame.

First, the paper manufacturing apparatus of the present invention will be described. The plow frame 16 is one in which a plow plate 18 is laid on a girder 17 installed in a frame body 16a. As shown in the figure, it has a water-permeable gap (slit), and has a concave-convex pattern itself. In the case of a blind, this uneven pattern is a horizontal stripe formed by an array of thin bamboos knitted with string.

The plow plate 18 has many gaps.
There is no particular limitation as long as it has a concavo-convex pattern, and a member woven from bamboo is suitable as the plow 18. In addition to the screen,
As shown in FIG. 3, various types such as a four-knitted one (a), a basket-knitted one (b), and other nets can be used.

The material of the plow plate 18 is not particularly limited.
A synthetic resin such as a vinyl sheet having holes or a metal such as a wire net is also possible.

The lower part of the plow frame 16 is surrounded by a box 20 of the same diameter, and a suction port 23 for connecting a suction pipe (hose) 22 from a vacuum pump 21 to a side of the box 20. Provided. The position of the suction port 23 is set to a height in consideration of a dimension enough to store water on the bottom 20a of the box 20. The suction port 23 is a box
A plurality may be provided so as to face front, back, left, and right around the periphery of 20.

Further, although the plow frame 16 and the box body 20 can be integrated, they can be separated as separate bodies in the example shown.

Next, the method of the present invention using such an apparatus will be described. The pulp solution 4 or the like is poured into the plow frame 16 so as to be flat. Or put wet paper before dehydration.

Then, the vacuum pump 21 is operated, and the box 20 is turned on.
Apply suction force inside. In this way, a negative pressure is applied to the stock (pulp) 25 accumulated on the plow plate 18 stretched over the plow frame 16 from below, and water falls into the box 20 and accumulates on the bottom 20a, and the stock Dewatering (pulp) and pressing of (pulp) 25 are performed.

In order to obtain a stronger negative pressure, after dehydration by suction, a non-permeable sheet such as vinyl is placed on the stock (pulp) 25, and suction is performed again to make full use of the atmospheric pressure.

At the same time, the plow 18 itself has a concave and convex pattern which becomes a mold. When a negative pressure is applied from below as described above, the concave and convex pattern presses the stock (pulp),
Paper with an expression on the surface as an uneven pattern as shown in FIG.
You can get 26. In FIG. 4, the leftmost is the case of the blind-shaped plow plate 18 in FIG. 1, the center is the fourth case of FIG. 3A, and the right is the case of the basket of FIG.

If the paper does not need an uneven pattern, the plow 18 may be made of a flat material having no mold uneven pattern.

As shown in FIG. 5, the plow frame 16 is
a water-permeable reinforcing plate provided with small holes 19a on the girder 17 instead of directly laying the plow 18 on the girder 17 installed in a
19 may be laid, and the plow 18 may be laid thereon.

This makes it possible to prevent deformation even when the water-permeable plow 18 such as a pond does not have sufficient strength.
Negative pressure can be applied stably.

The reinforcing plate 19 may be made of any material made of wood, synthetic resin, or metal as long as it is thin and has some strength.

[0040]

As described above, the method and apparatus for producing paper according to the present invention reduce the labor and time required for the wiping and squeezing steps when producing paper by handmaking or a method similar thereto. It can be manufactured quickly and at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a paper manufacturing method and apparatus of the present invention.

FIG. 2 is a vertical sectional side view of the paper manufacturing method and apparatus of the present invention.

FIG. 3 is a plan view showing another example of a plow plate.

FIG. 4 is a plan view of the completed paper.

FIG. 5 is a perspective view showing an example of a plow frame.

FIG. 6 is a perspective view of a plow frame in a conventional example.

FIG. 7 is an explanatory view of a first step of a conventional example.

FIG. 8 is an explanatory view of a second step of the conventional example.

FIG. 9 is an explanatory view of a third step of the conventional example.

FIG. 10 is an explanatory view of a fourth step of the conventional example.

FIG. 11 is an explanatory view of a fifth step of the conventional example.

FIG. 12 is an explanatory view of a sixth step of the conventional example.

FIG. 13 is an explanatory view of a first step of another conventional example.

FIG. 14 is an explanatory view of a second step of another conventional example.

FIG. 15 is an explanatory view of a third step of another conventional example.

FIG. 16 is an explanatory diagram of a paper machine.

[Explanation of Signs] 1 ... Plow frame 2 ... Girder 3 ... Net 4 ... Pulp solution 5 ... Tank 6a, 6b ... Plate 7 ... Shaft 8 ... Counter weight 9 ... Flow box 10 ... Circle net 11 ... Blanket (felt) 12 ... Press roll 13 Dryer 14 Doctor 15 Dewatering zone 16 Plow frame 16a Frame 17 Beam 18 Plow board 19 Reinforcement plate 19a Small hole 20 Box 20a Bottom 21 Vacuum pump 22 Suction pipe (Hose) 23 ... Suction port 24 ... Tank 25 ... Paper (pulp) 26 ... Paper

Claims (5)

[Claims] 1. A lower part of a plow frame is surrounded by a box provided with a suction port for connecting a suction tube, and a pulp solution is poured into the plow frame.
Alternatively, place the wet paper before dewatering, apply suction to the lower box, and apply negative pressure from below to the stock collected on a permeable board such as a cage laid on the girder of the plow frame. A method for producing paper, comprising simultaneously dehydrating and pressing the entire surface of the paper. 2. A permeable board such as a basin has a rugged pattern which itself becomes a mold, and the stock is embossed with the rugged pattern by applying a negative pressure from below. 2. The method for producing paper according to 1. 3. A lower part of a plow frame in which a permeable board such as a cage is laid on a girder is surrounded by a box, and a suction port for connecting a suction pipe is provided in the box. Paper manufacturing equipment. 4. The paper manufacturing apparatus according to claim 3, wherein the water-permeable plow board provided in the plow frame has a concavo-convex pattern serving as a mold. 5. The paper manufacturing apparatus according to claim 4, wherein a water-permeable slab such as a pens is laid under the water-permeable reinforcing plate.