JPS5818210B2 - Surface coloring method and device for inorganic board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for coloring the surface of an inorganic board, and more specifically, after forming a slurry 1 to form an inorganic board substrate 2, a pigment 3 is added to the slurry 1. The mixed colored slurry 4 is made into paper to form a colored layer 5 on the inorganic plate substrate 2, and immediately after this, a shaking device 34 is applied to the surface of the colored layer 5 to break large blocks of the colored slurry 4. An endless belt 6 for forming a slurry 1,
The starting end side of the endless belt 6 is used as a slurry outflow part 7, and the end side is used as a slurry flow part 8, and a slurry back flow path 9 flows on the endless belt 6 in a direction opposite to the moving direction of the endless belt 6.
a slurry settling section 10 located on the terminal end side of the endless belt 6 from the slurry inflow section 8; a shielding plate 11 separating the slurry settling section 10 and the slurry inflow section 8; and a pigment supplying the pigment 3 to the slurry settling section 10. The combined invention is a surface coloring and cosmetic device for an inorganic board, which is comprised of a supply device 12 and a shaking device 34 for breaking large blocks of colored slurry 1)-4 colored with pigments.

Conventionally, in order to form a color ply (colored layer) on the surface of a cement inorganic board, there was a method of applying a different coloring agent to the substrate immediately after it was removed from the paper making machine and attaching the colored layer to the surface. The coloring agent used in this case was a mixture of pigments, gicrite, and fibers (pulp, rock wool, or asbestos) and was applied using a mortar gun or applied with a brush using a spring.

However, in this case, a different colored layer is attached to the substrate, so if the colored layer is made thicker, cracks will occur in the colored layer when it is formed using a press roll of a paper machine or an embossing plate press.
Therefore, it was not possible to make the colored layer thicker.

In addition, since the colored layer cannot be thickened in this way, the color of the substrate is likely to appear due to scratches, and furthermore, since the colored layer and the substrate are different, there is a disadvantage that delamination may occur between the colored layer and the substrate due to frost damage. there were.

In addition, a separate coating device is required, and the colorant scatters, creating a poor working environment.

The present invention was made in view of the drawbacks of the conventional example, and
The purpose of this is to form a colored slurry mixed with a pigment on an inorganic plate substrate formed by paper-making the slurry and form a colored layer, so that the inorganic temporary substrate and the colored layer are of the same quality, and coloring due to frost damage is achieved. Peeling of the layers can be prevented, and since the colored layer is formed by papermaking, the working environment will not be worsened (also, the colored layer of the same quality can be thickened to prevent cracks or scratches on the colored layer during embossing or press rolling. To provide a surface coloring cosmetic method for an inorganic board in which the ground color does not appear due to scratches, and an apparatus therefor.

The present invention will be described in detail below according to illustrated embodiments.

The endless belt 6 is made of felt and rotates in the direction of arrow A in FIG.

The endless belt 6 moves in an upwardly inclined direction from the roller 13 to the roller 14, and this portion is referred to as an upwardly inclined portion 18, and a number of suction boxes 15 are disposed below the endless belt 6 in this portion.

Further, a pressure belt 16 made of felt is disposed above the rear horizontal portion of the endless belt 6.
A press roll 17 is disposed behind the press roll 17.

A slurry supply section 19 is arranged above the ascending slope section 18.

Further, a slurry backflow path 9 through which the slurry 1 flows in a direction opposite to that of the endless belt 6 is provided on the upward slope portion 18 of the endless belt 6, and the starting end side of the upward slope portion 18 serves as the slurry outflow portion 7 of the slurry backflow path 9. The terminal side is a slurry flow part 8.

A slurry supply pipe 20 led out from the slurry supply part 19 is connected to an inlet box 21 connected to the slurry flow part 8, and a slurry recovery pipe 22 led out from the slurry outflow part 7 supplies slurry through a pump 23. It is connected to section 19.

Next, the terminal end portion of the ascending slope portion 19 will be described in detail according to FIG.

Reference numeral 11 denotes a shielding plate that divides the slurry into a slurry flower section 8 and a slurry settling section 10 , and the slurry settling section 10 is located to the right of the slurry inlet section 8 .

An impeller 24 is rotatably disposed within the slurry inlet 8 to agitate the slurry.

Further, a pigment supply device 12 is provided above the slurry settling section 10.

The pigment supply device 12 is composed of a mixing tank 25 and a supply tank 26, and a pigment supply pipe 2 is installed in the mixing tank 25.
7. A water pipe 28 and a binder supply pipe 29 for supplying a binder 30 such as gicrite or cement are inserted, and after the pigment 3, binder 30, and water are mixed by the propeller 34 in the mixing tank 25, It is designed to be sent to a supply tank 26.

The bottom of the supply tank 26 is sloped downward, partition walls 31 are vertically arranged alternately, and a mixture 33 of the pigment 3, water, and binder 30 is stirred by a rotary impeller 32 in the supply tank 26. is flowing down,
The mixture 33 that has flowed down is supplied to the slurry settling section 10.

Note that only the pigment 3 may be supplied.

Further, a spindle-shaped shaking device 34 is disposed within the slurry settling section 10.

Next, a method for manufacturing the inorganic plate A will be explained.

The slurry 1 flowing downward from the inlet box 21 through the slurry reverse flow path 9 is formed into paper on the endless belt 6 during that time, and its thickness gradually increases.

Inorganic plate substrate 2 with a certain thickness (approximately 9 mm thickness)
passes below the shielding plate 11 and enters the slurry sedimentation section 10, where a colored slurry 4 colored with a pigment is formed on the inorganic substrate 2 with a constant thickness (thickness of about 31 W),
A colored layer 5 is formed and leaves the slurry settling section 10.

Immediately after this, in the slurry settling section 10, the shaking device 34 is applied to the surface of the colored layer 5, as shown in FIG. The purpose of providing the shielding plate 11 and the impeller 24 at the boundary between the slurry inflow section 8 and the slurry settling section 10 is to prevent the slurry 1 blown out from the inlet box 21 from flowing into the slurry settling section 10. This is to prevent

Note that by moving the position of the shielding plate 11 back and forth, the thickness and position of the colored layer 5 can be changed arbitrarily.

Next, the composition of the inorganic plate substrate 2 and the colored layer 5 is as follows.

(a) Inorganic board cement 40%MSH
(Calcium aluminum monosulfate idrate) 30% gypsum
15% pulp
4% glass fiber
1% other inorganic fillers 1
0% (b) Materials supplied to the slurry sedimentation section (5) Example: Pigment cement or gicrite water (B) Example: The inorganic plate A produced in the pigment ascending slope section 18 is pressed by the press belt 16 and the press roll 11. After that, it is discharged outside.

In this way, in the present invention, since the colored layer of the same quality as the inorganic plate substrate 2 is formed on the inorganic plate substrate, there is no difference in physical properties between the two, and therefore, even if pressed or embossed, The colored layer will not crack or peel off due to frost damage, and since the colored layer is formed by papermaking, the colored layer can be thickened, and some scratches will not cause the colored layer to peel off. Even if it occurs, the background color will not be present.

In addition, immediately after forming a colored layer using colored slurry on an inorganic plate substrate, a shaking device is applied to the surface of the colored layer to break large blocks of the colored slurry, which makes it possible to improve the formation of the colored layer surface. There is an effect that can be done.

Furthermore, since the colored layer is formed by papermaking, there is no need for a special coating device unlike in the past, and there is no scattering of the coloring agent, which has the advantage of providing an excellent working environment.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a paper making machine used in the present invention, Fig. 2 is a schematic diagram of a colored layer forming part of the present invention, and Fig. 3 is a longitudinal cross-sectional view of a part of an inorganic board of the present invention. , 2 is an inorganic plate substrate, 3 is a pigment, 4 is a colored slurry, 5 is a colored layer, 6
1 is an endless belt, 7 is a slurry outflow section, 8 is a slurry inflow section, 9 is a slurry reverse flow path, 10 is a slurry settling section, 11
12 is a pigment supply device, and 34 is a shaking device.

Claims (1)

[Claims] 1. After forming an inorganic plate substrate by paper-making the slurry,
An inorganic material characterized by forming a colored slurry by mixing a pigment into a slurry to form a colored layer on an inorganic plate substrate, and immediately applying a shaking device to the surface of the colored layer to break large blocks of the colored slurry. A method for coloring the surface of a board. 2. An endless belt for making slurry; a slurry reverse flow path that flows on the endless belt in a direction opposite to the moving direction of the endless belt, with the starting end of the endless belt serving as a slurry outflow port and the ending end serving as a slurry inflow port; A slurry settling section located on the terminal end side of the endless belt from the inflow section, a shielding plate separating the slurry settling section and the slurry inflow section, a pigment supply device supplying pigment to the slurry settling section, and a coloring device colored with the pigment. A device for coloring the surface of an inorganic board, consisting of a shaking device that destroys large blocks of slurry.