JPH0638160Y2 - A device for attaching colored patterns to paper - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention is based on the fact that a color liquid is supplied onto a wet paper web in a papermaking process, and various delicate patterns rich in three-dimensional appearance of color can be freely displayed on a base paper. Yes, and therefore a good quality colored patterned paper (wallpaper, fusuma paper, shoji paper, booth paper,
The present invention relates to a device for providing a colored pattern on paper, which enables efficient and low-cost production of (for various uses such as wrapping paper).

[0002]

2. Description of the Related Art There are various conventional methods for coloring paper, but the most common method is to make a paper using a colored paper stock obtained by coloring a paper stock.

Taking a case of producing a colored pattern paper having a color-coded pattern using such a colored paper stock, for example, a plurality of colored paper stocks are poured into a comb and mixed to form a paper layer having a desired paper layer. Stripped from the key, it is dried to form a colored pattern paper, and this work is generally performed manually.

[0004]

However, the coloring method has the following various problems. That is, the color-coded pattern in the coloring method is formed by the entanglement of the colored stock materials, but the colored fibers are difficult to be entangled with each other because of the different specific gravities of the colored stock materials. Therefore, although the appearance of a new color due to the entanglement of the colored fiber can be expected, the expressed color is
It was inevitable that mixed colors would lack clarity and, of course, it could not be expected to develop new colors such as when mixed with different color dyes.
Therefore, the forms of patterns that can appear on colored paper are extremely limited, and it has not been possible to satisfy the demand for diversification of design effects in recent years, which demands delicate pattern expression. In addition, the colored pattern paper formed by the entanglement of the colored stock material has not only the above-mentioned problems in terms of the hue but also a natural state in terms of the coloring state and the feel. There was a lack of problems.

In addition, in the method of using the colored paper stock, it is necessary to prepare the colored paper stock of a plurality of colors prior to the production of the colored pattern paper. In addition to requiring skill, there was a problem that it required a corresponding space for the stock, and when mixing colored paper stock, it was necessary to prepare a colored paper stock according to the paper thickness to be formed for each paper making. There is also the problem that the work efficiency is extremely poor and the manufacturing cost rises because of the troublesomeness of having to consider the required amount.

Further, in forming a colored stock, since it is necessary to color the stock uniformly, it is possible that the colorants used for coloring and various chemicals are squeezed out to some extent after the completion of coloring. It's unavoidable,
If there are many types of colored paper materials, the amount of the squeezing liquid will be considerable, and if it is discharged as factory wastewater, it will cause pollution problems, and color materials and chemicals will be wasted. It was also uneconomical.

Other conventional methods for coloring paper include a roll coating method in which a required amount of color material is applied to the surface of the paper according to the rotation of a roll, and a spray dyeing method in which the color material liquid is sprayed onto the paper surface with a spray nozzle. However, there are many methods such as the sinking method, but it is difficult to express a delicate pattern with a gentle natural color by any of these methods. As in the case of Ai, when the coloring is performed by the secondary processing, the number of manufacturing processes is increased, and there is room for improvement in view of the improvement in productivity.

The present invention is based on the novel means of applying a colored pattern in the papermaking process, and is an apparatus for applying a colored pattern to paper (hereinafter referred to as an apparatus, which can solve the above-mentioned various problems all at once. It is intended to provide).

[0009]

The device 1 according to the present invention comprises:
A flow path 12 for flowing a dispersion liquid for colorant dispersion is provided above the wire cloth 2 that conveys wet paper, and a portion 12a near the downstream end of the flow path 12 has an upper surface 12b.
Is an inclined surface that inclines downward and the downstream end 1
2c has a linear shape or a state close to the linear shape, the downstream end 12c of the flow path is made to be slightly lifted from the wet paper web 14, and the upper side of the flow path 12 is
A plurality of color material liquid discharge ports 13 for discharging and mixing the color material (dye / pigment) liquid into the dispersion liquid flowing through the flow path 12 are provided at required intervals in the width direction of the wet paper web (for example (Provided over the entire width), and each color material liquid discharge port 13 is the flow path 1
2 is formed so as to obliquely discharge the color material liquid toward the upstream end direction, and each color material liquid discharge port 13 ...
It is characterized in that the wet paper web 14 can be reciprocally moved relative to the width direction of the wet paper web 2.

Here, "relatively reciprocally movable" means that the flow path 12 is stationary and the color material liquid discharge port 13 reciprocates, and that the color material liquid discharge port 13 is stationary and the flow path 12 is not. It is a concept that includes the case of reciprocating.

[0011]

In the dispersion liquid flowing through the flow passage, however, from the plurality of color material liquid discharge ports that relatively reciprocate in the width direction of the wet paper web,
When the color liquids of different colors, the color liquids of the same color, or the color liquids of the same color but having different concentrations are discharged, the color liquids are discharged obliquely toward the upstream end direction of the flow path. When viewed immediately after the liquid is discharged into the dispersion liquid, a certain amount of the colorant liquid goes back through the flow path as shown in FIG.

By the action of the turbulent flow generated during the retrogression, or when the dispersion liquid overflowing from the barrier plate 18a is allowed to flow through the flow path 12, the traced color liquid is traced back to the barrier plate. By colliding with 18a, the traced color material liquid easily dissolves in the dispersion liquid. For this reason, the traced color material liquid A has a greater degree of dispersion in the dispersion liquid on the flow path than the color material liquid B that has been discharged in the downstream end direction of the flow path and then washed away.

The color liquid obtained by primarily dispersing and containing the color material liquid in the dispersion liquid as described above has a small drop at the flow path downstream end 12c with respect to the wet paper web 14, and therefore the downstream end of the flow path 12 is small. It is gently supplied from 12c onto the wet paper web 14 so as to cover almost the entire width thereof. Then, on the conveyed wet paper, the color liquid freely spreads while being dissolved in the dispersion liquid while being dissolved in the dispersion liquid, whereby the colorant liquid is secondarily widely dispersed, and the free color By mixing
It means that a clear new color completely different from the original color of the supplied color material liquid is developed.

Due to the spread of colors and the development of a new color, the flow pattern formed in the dispersion liquid appears as it is on the base paper as the dispersion liquid gradually passes through the wet paper web. It will be. At that time, the viscosity of the dispersion liquid is directly related to the wet paper web permeation suppression rate of the dispersion liquid poured onto the conveyed wet paper web, and the viscosity of the color material liquid is directly related to the sedimentation prevention ratio of the color liquid material. Therefore, the dispersion of the supplied color material liquid can be finely controlled by finely adjusting the viscosity of the dispersion liquid or the color material liquid.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 2 exemplify a device 1 according to the present invention, and FIG. 3 shows a papermaking line incorporating the device 1. In FIG. 3, reference numeral 2 is a wire cloth, reference numeral 3 is a paper bat, reference numeral 5 is a suction box, reference numeral 6
Is a blanket, reference numeral 7 is a dryer, and reference numeral 9 is a winding roll.

1 and 2, the device 1 according to the present invention
Is provided above the wire cloth 2 that conveys the paper material, and is provided with a flow path 12 for flowing the dispersion liquid 10 for dispersing the color material. Above the flow path 12, for example, color material liquids of different colors are provided. Is provided with a plurality of color material liquid discharge ports 13 for discharging and mixing the same into the dispersion liquid 10 flowing through the flow path 12.

In the present embodiment, the flow passage 12 is arranged over the substantially entire width of the wet paper web 14 to be conveyed by the wire cloth 2, and the storage tank 17 having the bent flow passage 16 is provided in front of the conveying direction. The side surface 18 is continuously provided at the lower end of the side surface 18 in a state of being gently inclined downward in the transport direction, and a portion 12a near the downstream end thereof has an upper surface 12b which is an inclined surface further inclined downward and The end 12c has a linear shape or a shape close to the linear shape. The downstream end 12c of the flow path 12 has a wet paper web 14
It is in a state of being lifted up, preferably about 3 to 5 mm. A hose 19 for supplying the dispersion liquid is connected to the rear side of the storage tank 17. When the dispersion liquid is supplied to the storage tank 17 via the hose 19, the supplied dispersion liquid is It flows through the curved flow path 16, overflows from the front upper edge 20 of the storage tank 17, flows down through the flow path 12, and is supplied onto the wet paper web 14. Note that the degree of overflow from the storage tank 17, the inclined state of the flow path 12, and the distance between the downstream end 12c of the flow path 12 and the wet paper web 14 are set in consideration of the thickness of the wet paper web 14 and the like. When the dispersion liquid (color liquid) containing the colorant liquid is supplied from the flow path 12 onto the wet paper web 14 it is set so that the liquid does not damage the formation of the wet paper web 14. The dispersion liquid has a function of dispersing the color material discharged from the color material liquid discharge port 13 on the wet paper web 14 in a desired state, and has a required amount of "nerve (vegetative mucus)" or "synthetic glue". Boiled water in which is mixed is preferable.

In the present embodiment, the color material liquid discharge port 13 is formed as an opening at the lower end of an elongated discharge pipe 22, and a plurality of discharge pipes 22 (for example, around 10) are conveyed wet paper webs. 14 are provided at the lower end of a support cylinder 23 extending in the width direction at a predetermined interval. Inside the support cylinder 23, a colorant liquid pressure feed pipe 24 is provided continuously to the upper end of each discharge pipe 22. Has been paid. In the support cylinder 23, the color material liquid discharge port 13 as the lower end portion of each discharge pipe 22 has, for example, an inclined channel 12.
So that the colorant liquid discharge port 13 is slightly lifted from the flow path 12 so as to face the substantially central portion in the width direction of
The color material liquid discharge ports 13 ... Are arranged on the upper side of the flow path 12 and reciprocate in a constant cycle in the width direction of the wet paper web 14 in a state of facing the flow path 12 by a reciprocating device (not shown). See arrow F). The concentration of the colorant liquid is
It is assumed to be appropriate considering the condition of the pattern to be formed on the base paper. As an example of the color material liquid, for example, 0.1
Examples thereof include a colorant liquid in which a dye is dissolved at about 10%, and a colorant liquid in which an appropriate amount of "blur" or "synthetic bead" is added. Then, the color material liquids of, for example, 2 to 3 colors thus adjusted are made to correspond to the respective discharge pipes 22 so that the same color does not adjoin.

Next, an explanation will be given of how to apply a colored pattern to the paper by the apparatus 1 having such a configuration. Now, in the state where the wet paper web is being conveyed by the wire cloth 2, when the dispersion liquid as the "brush water" containing the "concentration" of the required concentration is supplied from the hose 19 into the storage tank 17, the dispersion liquid becomes Flowing through the curved flow path 16 of the storage tank 17 and gently overflowing from the front upper edge 20 of the storage tank 17 in a uniform state, the flow path 1
Run down 2. In addition to supplying the dispersed liquid to the storage tank 17, the supporting cylinder 23 is reciprocated and the supporting cylinder 2 is
When the color material liquid is pressure-fed to the discharge pipe 22 protruding from the lower end portion of 3, the color material liquid is discharged from each color material liquid discharge port 13 into the dispersion liquid 10 flowing through the flow path 12. It will be discharged toward. The color liquid containing the color material liquid in the flow path 12 is the downstream end 1 of the flow path with respect to the wet paper web 14.
Since the drop of 2c is small, it is gently supplied from the downstream end 12a of the flow path 12 onto the wet paper web 14 over the substantially entire width thereof. The supplied color liquid is in a state in which the color liquid containing "grid" is primarily dispersed and mixed in the dispersion liquid as "gripping water", as described in the above "Function". Therefore, in the portion of the required distance from the downstream end 12c of the flow path 12 toward the transport direction, the dispersed liquid (brake water) is
The action of "bending" keeps the wet paper web 14 impermeable to the utmost, and the action of "bending" suppresses the settling as much as possible. Therefore, in the portion of the required distance, It freely spreads while being dissolved in the dispersion on the conveyed wet paper or in a state close to it in the state of being floated, whereby the colorant liquid is secondarily widely dispersed, and by the mixing of the free colors at that time, A new color completely different from the original color of the discharged color material liquid is developed. Then, when the required dispersion of the color material liquid on the wet paper web 14 is completed, the viscosity of the liquid dispersion (brush water) decreases, and the liquid dispersion (brush water) permeates the wet paper web and the wire cloth. Drop from 2. As a result, the color material in the dispersed state dyes the wet paper web 14, whereby the flow pattern formed in the dispersion is directly displayed on the base paper as a delicate pattern with a gentle natural color. The Rukoto.

The concentration of "blur" in the dispersion liquid is directly related to the wet paper web permeation suppression rate of the dispersion liquid supplied on the conveyed wet paper, and the concentration of "blur" in the colorant liquid is the colorant. Since it is directly related to the settling suppression rate of the liquid, it is possible to finely control the dispersion of the discharged color material liquid by finely adjusting the concentration of "blur" in the dispersion liquid or the color material liquid. Become.

[0021]

With the device according to the present invention, various delicate patterns rich in three-dimensional color can be freely displayed on the ground paper, and therefore, it has a gentle natural colored surface, hue and feel. High-quality colored patterned paper (used for various purposes such as wallpaper, fusuma paper, shoji paper, booth paper, and wrapping paper) can be efficiently and inexpensively manufactured. Therefore, according to the present invention, it is possible to satisfy the demand for the diversification of design effects in recent years, which demands delicate pattern expression.

This will be specifically described as follows. A plurality of color material liquid discharge ports that reciprocate in the width direction of the wet paper web to be discharged into the dispersion liquid that flows through the flow path that is arranged on the upper side of the wet paper web. When the colorant liquids of different colors, the colorant liquids of the same color, or the colorant liquids of the same color but having different concentrations are discharged, the colorant liquids are temporarily The color liquid that is dispersed and contained (primary dispersion due to the action of turbulence and the action of collision with the weir plate described in the above section “Action”) has a small drop at the downstream end of the flow path with respect to the wet paper web. , Is gently supplied from the downstream end of the flow path onto the wet paper web over its entire width. The colorant liquid in the color liquid thus supplied is
It floats in the dispersion liquid on the wet paper web and freely spreads while being dissolved in the dispersion liquid, whereby the colorant liquid is secondarily widely dispersed. Then, by mixing the colors freely in that case, a clear new color completely different from the original color of the supplied color material liquid is developed.

Due to the spread of colors and the development of new colors as described above, the flow pattern formed in the dispersion liquid appears on the base paper as it is.

The viscosity of the dispersion is directly related to the wet paper permeation suppression rate of the dispersion poured onto the wet paper web, and the viscosity of the colorant liquid is directly related to the sedimentation suppression rate of the colorant liquid. Therefore, the dispersion of the supplied color material liquid can be finely controlled by finely adjusting the viscosity of the dispersion liquid or the color material liquid.

From the above, when the device of the present invention is used, various delicate patterns rich in three-dimensional color can be freely displayed on the base paper, and the colored pattern paper is entangled with the colored pattern paper. It is possible to obtain a high-quality colored patterned paper having a gentle natural colored surface, hue and feel, which is essentially different from that obtained by the conventional method of obtaining

In the device according to the present invention, the colorant liquid discharge port is provided so as to open toward the flow path,
In addition, the portion near the downstream end of the flow path has an upper surface inclined toward the lower side, and the downstream end is configured to have a linear shape or a state close to it, and the downstream end is brought close to the wet paper web. Therefore, the drop of the downstream end of the flow path with respect to the wet paper web is small. Therefore, it is possible to mix the color material liquid into the dispersion liquid without causing the formation damage of the wet paper web to be conveyed.

In the device according to the present invention, since the colorant liquid discharge port is configured to be capable of reciprocating relative to the flow path in the width direction of the wet paper web, its amplitude and reciprocating speed. A colored pattern can be freely attached to the base paper by making the required.

In addition, when the apparatus according to the present invention is used, unlike the case where a colored patterned paper is entangled to obtain a colored patterned paper, there is no waste of the colored material, and the economy can be improved. Further, since coloring is performed in the paper making process, it is possible to improve the productivity without requiring the work of preparing the colored stock material and the operation of mixing the colored stock material.

[Brief description of drawings]

FIG. 1 is a perspective view showing an apparatus according to the present invention.

FIG. 2 is a sectional view showing the operation of the device according to the present invention.

FIG. 3 is an explanatory view for explaining a papermaking line incorporating the device according to the present invention.

FIG. 4 is an explanatory diagram illustrating a primary dispersion state of a discharged color material liquid on a flow path.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Device 2 Wire cloth 12 Flow path 12a Portion near the downstream end of the flow path 12b Upper surface of the portion near the downstream end of the flow path 12c Downstream end of the flow path 13 Color liquid discharge port 14 Conveying wet paper

Claims (1)

[Scope of utility model registration request] 1. A flow path 12 for arranging a dispersion liquid for dispersing a colorant, which is located above a wire cloth 2 which conveys a wet paper web.
And a portion 12a near the downstream end of the flow path 12 is
The upper surface 12b is an inclined surface that inclines downward, and the downstream end 12c is formed so as to have a linear shape or a state close to that.
4 and the flow path 12
A plurality of colorant liquid discharge ports 13 for discharging and mixing the colorant liquid into the dispersion liquid flowing in the flow path 12 are provided at predetermined intervals in the width direction of the wet paper web to be conveyed, and each color liquid Outlet 1
3 is formed so as to obliquely discharge the color material liquid toward the upstream end direction of the flow path 12, and each color material liquid discharge port 13 is formed.
An apparatus for imparting a colored pattern to paper, characterized in that it is capable of reciprocating relative to the flow path 12 in the width direction of the wet paper web 14.