Deodorizing paper manufacturing device and method for manufacturing deodorizing paper

Abstract

Provided are a deodorizing paper manufacturing device for efficiently incorporating a substance having a deodorizing effect into paper stock, and a method for manufacturing deodorizing paper using the deodorizing paper manufacturing device. [Solution] The deodorizing paper manufacturing device 1 comprises a cylindrical cylinder 3 with a circular mesh 3A formed on its outer periphery, a papermaking tank 2A ​​that is provided above the axis 3B of the cylindrical cylinder 3 in the height direction Y and to which paper stock liquid 4A is supplied, and a deodorizing liquid supply unit 9 that is provided inside the papermaking tank 2A ​​and supplies deodorizing particle-containing liquid 9A. In this deodorizing paper manufacturing device 1, the paper stock liquid 4A is supplied to the circular mesh 3A while the cylindrical cylinder 3 is rotating, so that the paper stock is layered on the circular mesh 3B, and before the paper stock leaves the papermaking tank 2A, the deodorizing liquid supply unit 9 supplies the deodorizing particle-containing liquid 9A to the paper stock.

Description

[Technical Field]

[0001] The present invention relates to a deodorizing paper manufacturing apparatus and a deodorizing paper manufacturing method. [Background technology]

[0002] Deodorizing paper is used to eliminate odors from garbage bags containing odorous waste and from the inside of shoes. Some deodorizing papers contain particles of binchotan charcoal, activated carbon, or other deodorizing agents in tissue paper. Many manufacturing devices and methods for deodorizing paper have been disclosed (for example, Patent Document 1).

[0003] The method for producing deodorizing paper described in Patent Document 1 includes a first process for dewatering a strip of stock placed on or attached to a transfer means in the wire section after papermaking; a second process for transferring the dewatered strip of stock to a transfer means in the press section for further dewatering; and a third process for drying the dewatered strip of stock using a drying means in the dryer section. One of the first, second, and third processes includes a fourth process for injecting a particle-containing liquid containing deodorizing particles onto the stock strip from multiple injection units. The fourth process is characterized by arranging multiple injection units in a row so that the particle-containing liquid is applied across the width of the stock strip, and sequentially injecting the particle-containing liquid from each injection unit with a predetermined time difference to prevent uneven distribution or damage to the stock fibers. This method for producing deodorizing paper allows deodorizing particles to be applied to the stock at a desired ratio, and thin deodorizing paper can be produced with reduced tearing and ripping. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6553320 Summary of the Invention [Problem to be solved by the invention]

[0005] Conventional paper manufacturing methods use a cylinder installed in a papermaking tank. The paper stock solution supplied to the papermaking tank is drawn up using the cylinder, and the drawn-up paper stock is dried to obtain the desired paper product. When producing deodorizing paper, for example, the paper stock is drawn up using the cylinder, and a liquid containing a deodorizing substance (deodorizing particle-containing liquid) is injected onto the paper stock immediately after the paper stock is exposed above the surface of the paper stock solution, or the deodorizing particle-containing liquid is injected onto the paper stock when the paper stock is relatively dry. Immediately after the paper stock is drawn up using the cylinder, the liquid components in the paper stock solution fall due to gravity, and the deodorizing particle-containing liquid also falls along with the liquid components. As a result, the desired concentration of deodorizing particles cannot be incorporated into the paper stock, making it difficult to achieve the desired deodorizing function. In this case, a large amount of deodorizing particle-containing liquid must be injected to achieve the desired deodorizing function.

[0006] On the other hand, if the deodorizing particle-containing liquid is injected into the paper stock when the paper raw material is relatively dry, a layer of deodorizing particles is formed on the surface of the paper stock, making it difficult to incorporate the deodorizing particles into the interior of the paper stock. The surface layer of the paper stock may come into contact with other materials when it is wound up, or may be rubbed by external factors. This may result in the deodorizing particle layer being scraped off, making it impossible to obtain the deodorizing function. For these reasons, there has been a demand for a deodorizing paper manufacturing apparatus and method for efficiently incorporating deodorizing substances into the deodorizing paper base paper and manufacturing deodorizing paper with the desired deodorizing effect.

[0007] Therefore, an object of the present invention is to provide a deodorizing paper manufacturing apparatus for efficiently incorporating substances having deodorizing effects into paper stock, and a method for manufacturing deodorizing paper using the deodorizing paper manufacturing apparatus. [Means for solving the problem]

[0008] The deodorizing paper manufacturing apparatus according to the present invention is an apparatus for manufacturing deodorizing paper using paper stock liquid, and includes a rotor with a cylindrical mesh formed on its outer periphery, a papermaking tank located above the shaft of the rotor in the height direction and to which the paper stock liquid is supplied, and a deodorizing liquid supply unit located inside the papermaking tank and supplying a deodorizing particle-containing liquid. This deodorizing paper manufacturing apparatus is characterized in that, while the rotor is rotating, the paper stock liquid is supplied to the cylindrical mesh, causing the paper stock to be stacked on the cylindrical mesh, and before the paper stock leaves the papermaking tank, the deodorizing particle-containing liquid is supplied from the deodorizing liquid supply unit to the paper stock.

[0009] The deodorizing paper manufacturing device of the present invention is characterized in that the position at which the deodorizing particle-containing liquid is supplied is on an extension line that forms an angle of 25 to 45 degrees with the horizontal portion extending horizontally from the shaft portion of the rotating body when viewed from the side.

[0010] The deodorizing paper manufacturing device according to the present invention is characterized in that the upper portion and one side portion of the rotor are in contact with the papermaking tank.

[0011] The deodorizing paper manufacturing device according to the present invention is characterized by having an outer tub that is open at the top, and a rotor and a papermaking tub provided inside the outer tub.

[0012] The method for manufacturing deodorizing paper according to the present invention is a method for manufacturing deodorizing paper using the above-mentioned deodorizing paper manufacturing apparatus, and is characterized by including a paper raw material liquid supplying step for supplying paper raw material liquid to a papermaking tank, a paper stock stacking step for rotating a rotor and stacking paper stock on a cylindrical mesh, a deodorizing liquid supplying step for supplying a liquid containing deodorizing particles from a deodorizing liquid supply unit to the paper stock, and a drying step for obtaining deodorizing paper base paper by drying the paper stock after the deodorizing liquid supplying step. [Effects of the Invention]

[0013] In the deodorizing paper manufacturing apparatus according to the present invention, a liquid containing deodorizing particles is supplied to the stock stacked on the cylinder before the stock rises above the surface of the paper stock liquid in the papermaking tank, so that the deodorizing particles can be efficiently incorporated into the stock, and deodorizing paper with the desired deodorizing function can be manufactured.

[0014] In addition, in the deodorizing paper manufacturing device according to the present invention, the position at which the deodorizing particle-containing liquid is supplied is, in a side view, on an extension line that forms an angle of 25 to 45 degrees with the horizontal section that extends horizontally from the shaft section of the rotor, and by supplying the deodorizing particle-containing liquid to the stock at a position in this range, the amount of deodorizing particle-containing liquid that falls can be reduced, thereby cutting costs.Furthermore, by having the upper part and one side part of the rotor contact the papermaking tank to which the paper stock liquid has been supplied, and by having part of the rotor come into contact with the paper stock liquid to stack the stock, the object can be achieved with a smaller amount of paper stock liquid supplied.

[0015] In the method for producing deodorizing paper according to the present invention, a deodorizing particle-containing liquid is supplied to the stock from a deodorizing liquid supply unit located on an extension of the horizontal section extending horizontally from the rotation axis at an angle θ of 25 to 45 degrees, thereby making it possible to incorporate a certain amount of deodorizing particles into the stock and imparting the desired deodorizing effect to the deodorizing base paper. Furthermore, the deodorizing particles can be incorporated not only into the surface layer of the stock but also into the interior, thereby stabilizing quality and improving reliability. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic diagram of a deodorizing paper manufacturing device according to an embodiment of the present invention. [Figure 2] 1 is a side view of a rotor (cylinder) of a deodorizing paper manufacturing device according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] The deodorizing paper manufacturing apparatus and the deodorizing paper manufacturing method according to this embodiment will be described with reference to FIGS.

[0018] As shown in Fig. 1, the deodorizing paper manufacturing apparatus 1 according to this embodiment includes an outer tub 2 that is open at the top, a cylindrical cylinder (rotor) 3 that is provided inside the outer tub 2 and has a mesh 3A formed on its outer periphery, a papermaking tank 2A ​​that is provided inside the outer tub 2 and to which paper stock liquid 4A is supplied from a paper stock liquid supply tank 4, a deodorizing liquid supply unit 9 that is provided inside the papermaking tank 2A ​​and supplies a deodorizing particle-containing liquid 9A, a couch roller 5, a press roller 6, and a take-up roller 7. The paper stock liquid 4A is, for example, obtained by disintegrating pulp material and mixing it with white water. A wet felt 10 is hung on the couch roller 5, and the surface of the wet felt 10 is in contact with the part of the cylindrical cylinder 3 that is exposed above the liquid surface in the papermaking tank 2A. The wet felt 10 is used as a means for transporting the paper stock.

[0019] The outer tank 2 is open at the top, and a cylindrical cylinder 3 is fixed above the bottom of the papermaking tank 2A ​​at a specified distance. Paper stock liquid 4A is supplied to the papermaking tank 2A ​​from a paper stock liquid supply tank 4, and the upper part and one side of the cylindrical cylinder 3 are in contact with the papermaking tank 2A. As a result, part of the cylindrical cylinder 3 is in contact with the paper stock liquid 4A. The outer periphery of the cylindrical cylinder 3 is made up of a circular mesh 3A, and the rotation shaft 3B is connected to a rotation drive unit. When the cylindrical cylinder 3 rotates around the rotation shaft 3B, the paper stock in the paper stock liquid 4A is layered on the circular mesh 3A. When the paper is drawn above the liquid level of the paper stock liquid 4A in the papermaking tank 2A, a certain amount of the liquid components contained in the paper stock liquid 4A falls into the cylindrical cylinder 3 due to gravity.

[0020] The deodorizing liquid supply unit 9 is used to supply a deodorizing particle-containing liquid 9A to the stacked paper stock. The deodorizing particle-containing liquid 9A is, for example, a liquid containing particles such as binchotan charcoal or activated carbon. The deodorizing liquid supply unit 9 is provided above the rotation axis 3B of the cylindrical cylinder 3 in the height direction Y, and has a supply port 9B. The deodorizing particle-containing liquid 9A is supplied to the paper stock through this supply port 9B. Specifically, the deodorizing particle-containing liquid 9A is supplied to the paper stock from the deodorizing liquid supply unit 9 before the paper stock stacked on the cylindrical mesh 3A rises above the liquid surface of the paper stock liquid 4A in the papermaking tank 2A ​​(before it is exposed to the atmosphere).

[0021] As shown in Figure 2, when viewed from the side in the direction in which the rotation axis 3B extends, the supply port 9B of the deodorizing liquid supply unit 9 is located on an extension line that forms an angle θ of 35 degrees with a horizontal portion 3C that extends horizontally in the left-right direction X from the rotation axis 3B of the cylindrical cylinder 3. The position of the supply port 9B that supplies the deodorizing particle-containing liquid 9A is preferably such that the angle θ is between 25 and 45 degrees. The deodorizing paper manufacturing device 1 is equipped with a supply control unit connected to the deodorizing liquid supply unit 9, and this supply control unit can control the supply speed and supply amount of the deodorizing particle-containing liquid 9A supplied from the supply port 9B.

[0022] Next, a method for manufacturing deodorizing paper according to this embodiment will be described. This method for manufacturing deodorizing paper is carried out using a deodorizing paper manufacturing apparatus 1.

[0023] The method for manufacturing deodorizing paper according to this embodiment includes a paper stock liquid supplying step of supplying paper stock liquid 4A to papermaking tank 2A, a stock stacking step of rotating cylindrical cylinder 3 to stack the stock in paper stock liquid 4A on cylindrical mesh 3A, a deodorizing liquid supplying step of supplying deodorizing particle-containing liquid 9A toward the stock from a supply port 9B of deodorizing liquid supply unit 9 provided at a predetermined position, and a drying step of drying the stock after the deodorizing liquid supplying step to obtain deodorizing roll paper (deodorizing base paper) 12. Each step will be explained below.

[0024] [Paper raw material liquid supply process] A paper stock liquid 4A, which is a mixture of disintegrated pulp material and white water, is stored in the paper stock liquid supply tank 4. In the paper stock liquid supply process, this paper stock liquid 4A is supplied appropriately from the paper stock liquid supply tank 4 to the paper making tank 2A. It is also possible to supply the liquid containing pulp material and the white water separately to the paper stock liquid supply tank 4 and mix them in the paper making tank 2A.

[0025] [Paper material stacking process] When the cylindrical cylinder 3 is rotated around the rotation axis 3B, the paper stock liquid 4A adheres to the web 3A, and the paper stock in the paper stock liquid is piled up. If the paper is drawn up above the liquid level of the paper stock liquid 4A, the liquid component of the paper stock liquid 4A falls downward, and the paper stock remains on the web 3A.

[0026] [Deodorizing liquid supply process] In the deodorizing liquid supply process, deodorizing particle-containing liquid 9A is supplied to the stock from supply port 9B of deodorizing liquid supply unit 9. At this time, the deodorizing particle-containing liquid 9A is supplied to the stock while the stock is in contact with the liquid in stock liquid 4A, and the supplied deodorizing particle-containing liquid 9A is dispersed throughout the stock. In a side view seen from the direction in which rotation axis 3B extends, supply port 9B is provided on an extension line that forms an angle θ of 35 degrees with a horizontal portion 3C that extends horizontally in the left-right direction X from rotation axis 3B of cylindrical cylinder 3. When the stock has rotated to the position of supply port 9B, a predetermined amount of liquid component has been removed from paper stock liquid 4A, and a large amount of liquid component does not fall due to gravity as would occur immediately after paper is made up.

[0027] [Drying process] After the deodorizing liquid process, the stock is attached to a wet felt 10, which serves as a transport means. The wet felt 10 is made of a material that is water-absorbent or water-squeezing, and is hung between a couch roller 5 and a press roller 6 and moved. A suction box is provided at an appropriate position, and this suction box dehydrates the stock attached to the wet felt 10. The stock and wet felt 10 are then sandwiched between the press rollers 6, and the stock is attached to and transported from the wet felt 10 to a dry felt. The dry felt then transports the stock to a dryer part (not shown), where it is dried using a Yankee dryer or the like.

[0028] [Winding process] After the drying process, a winding process is carried out. In the winding process, the strip-shaped thin paper that has been completely dried in the drying process is wound up by a winding roller 7. The wound thin paper becomes deodorizing roll paper (deodorizing base paper) 12.

[0029] Next, the effects of the deodorizing paper manufacturing device 1 and the deodorizing paper manufacturing method according to this embodiment will be described.

[0030] In the deodorizing paper manufacturing apparatus 1 according to this embodiment, before the stock stacked on the cylinder 3A emerges from the liquid surface of the paper stock liquid 4A in the papermaking tank 2A, a deodorizing particle-containing liquid 9A is supplied to the stock from the deodorizing liquid supply unit 9. This allows the deodorizing particles to be efficiently contained in the stock, making it possible to produce deodorizing paper with the desired deodorizing function.

[0031] In the deodorizing paper manufacturing device 1 according to this embodiment, the upper part and one side of the cylindrical cylinder 3 contact the papermaking tank 2A ​​to which the paper stock liquid 4A has been supplied, and part of the cylindrical cylinder 3 comes into contact with the paper stock liquid 4A to laminate the stock. In this way, compared to when the paper stock liquid 4A is supplied to the outer tank 2 and the stock is laminated, the object can be achieved with a smaller supply of paper stock liquid 4A.

[0032] In the method for manufacturing deodorizing paper according to this embodiment, in the deodorizing liquid supply step, deodorizing particle-containing liquid 9A is supplied to the stock from a supply port 9B of a deodorizing liquid supply unit 9 provided on an extension line that forms an angle θ of 35 degrees with a horizontal portion 3C that extends horizontally in the left-right direction X from the rotation axis 3B of the cylindrical cylinder 3. The stock that has moved to the position corresponding to the supply port 9B has lost a certain amount of liquid components and is stacked, thereby reducing the amount of deodorizing particle-containing liquid 9A that falls into the cylindrical cylinder 3. This makes it possible to reduce costs, and to include a certain amount of deodorizing particles in the stock, thereby imparting the desired deodorizing effect to the deodorizing base paper 12.

[0033] Furthermore, in the method for manufacturing deodorizing paper according to this embodiment, supplying the deodorizing particle-containing liquid 9A to the stock at the above-mentioned position allows the deodorizing particles to be contained not only in the surface layer of the stock but also in the interior, and makes it easy to attach the deodorizing particles without unevenness in concentration. Therefore, even if the surface of the deodorizing base paper 12 is rubbed, the deodorizing effect can be maintained, stabilizing quality and improving reliability. Furthermore, preventing uneven distribution of the deodorizing particles can prevent localized tears and rips.

[0034] It has been found that when the supply port 9B is positioned at an angle θ between 25 and 45 degrees, the amount of liquid components that fall into the cylindrical cylinder 3 can be reduced, and deodorizing particles can be contained inside the paper stock.

[0035] Although the present embodiment has been described above, it is possible to select and / or change the configurations described in the above embodiment as appropriate without departing from the spirit of the present invention. For example, it is also possible to color or add patterns to the deodorizing paper. The method for manufacturing deodorizing paper can be applied to various paper products such as toilet paper. [Explanation of symbols]

[0036] 1. Deodorizing paper manufacturing equipment 2 Outer tank 2A Paper tank 3. Cylinder (rotating body) 3A circular mesh 3B Rotating shaft (shaft) 3C Horizontal part 4. Paper stock liquid supply tank (paper stock supply section) 4A Paper raw material liquid 5. Couch Roller 6 Press Roller 7 Winding roller 9 Deodorizing liquid supply unit 9A Deodorizing particle-containing liquid 9B Supply port 10 Wet felt 11 Laura 12 Deodorizing roll paper (deodorizing base paper) θ angle X vertical direction Y left / right direction

Claims

1. A deodorizing paper manufacturing apparatus for manufacturing deodorizing paper using a paper raw material liquid, a rotating body having a circular mesh formed on its outer periphery; a papermaking tank provided above the shaft of the rotor in the height direction and into which the paper stock liquid is supplied; a deodorizing liquid supply unit provided inside the papermaking tank and supplying a liquid containing deodorizing particles, The paper stock liquid is supplied to the cylindrical mesh while the rotor is rotating, so that the paper stock is piled up on the cylindrical mesh, and the deodorizing particle-containing liquid is supplied from the deodorizing liquid supply unit to the paper stock before the paper stock is discharged from the papermaking tank. A deodorizing paper manufacturing device characterized by the above.

2. a position where the deodorizing particle-containing liquid is supplied is on an extension line that forms an angle of 25 degrees to 45 degrees with a horizontal portion that extends horizontally from the shaft portion of the rotating body in a side view; 2. The deodorizing paper manufacturing apparatus according to claim 1.

3. an upper portion and one side portion of the rotor are in contact with the papermaking tank; 3. The deodorizing paper manufacturing apparatus according to claim 1 or 2.

4. An outer tub is provided with an opening at the top, and the rotor and the papermaking tub are provided inside the outer tub.

3. The deodorizing paper manufacturing apparatus according to claim 1 or 2.

5. A method for producing deodorizing paper using the deodorizing paper manufacturing apparatus according to claim 1, a paper stock liquid supplying step of supplying the paper stock liquid to the papermaking tank; a stock stacking step of rotating the rotor and stacking stock on the cylinder; a deodorizing liquid supplying step of supplying the deodorizing particle-containing liquid from the deodorizing liquid supply unit to the paper stock; and a drying step of drying the paper stock after the deodorizing liquid supply step to obtain deodorizing paper base paper. A method for producing deodorizing paper.

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