JPS5943301B2 - Glass fiber-containing laminate and its manufacturing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a glass fiber-containing laminate and a method for manufacturing the same.

Conventional glass fiber-containing composite boards are composites of glass fiber bundles (hereinafter simply referred to as glass fibers) and cement, and were developed as an alternative to concrete boards by improving the tensile strength of concrete boards.

Therefore, thin interiors such as asbestos slate boards and pulp cement boards are recommended. It is much thicker than the exterior material. Only products with relatively large surface irregularities could be manufactured. However, there are spray methods, spray suction methods, premix methods, etc., but no matter which method is used, the thickness tends to be uneven when producing a product with a practical thickness, and glass fibers tend to be uneven. The glass fibers were oriented in three dimensions, resulting in uneven surfaces and protruding glass fibers, which required time and effort to finish the surface. In addition, the three-dimensional orientation of the fibers reduces the effective area of the glass fibers, leading to a decrease in strength. This prevents increases in density and strength due to pressurization. Among them, the premix method is concerned with the dispersion curve of the glass fiber matrix. Even if the fiber length was limited to 10 m/WL or less, fiber clumps were still likely to occur and sufficient strength could not be exhibited. Furthermore, methods other than the premix method have disadvantages in that they are not suitable for mass production and cannot utilize the selvage produced by cutting after curing, resulting in loss of glass fibers and cannot be used effectively. In view of the fact that appearance is originally more important than strength for building materials, the present invention aims to improve the drawbacks of conventional products and provide a glass fiber-containing laminate that is excellent in both strength and appearance. below. The structure of the glass fiber-containing laminate of the present invention will be explained in detail with reference to the drawings.

In FIG. 1, 1 is a glass fiber-containing laminate of the present invention;
2 is a short fiber containing layer, 3 is a short fiber containing layer, 4 is a glass fiber containing layer, 5 is a glass fiber, and 6 is a small matrix.

Although any type of short fiber can be used, preferred examples include asbestos, pulp, organic synthetic fibers, and inorganic synthetic fibers.

When using these fibers, they may be used alone, or 1j
Two or more types may be mixed and used. The length of short fiber is 10
m/TL or less, preferably 3 m/RrL to 8 m/m. If the short fibers are too short, the strength of the glass fiber-containing laminate will be reduced, and if they are too long, the fibers will clump together, making it difficult to manufacture the laminate. As the glass fiber, a glass fiber bundle is used with a length of 201 m or more, preferably 20 m/m or more.
50mj, optimally cut to 25m/m to 35m/m.

If the glass fiber is too long, the dispersion will be poor. It becomes easy to bend, and if it is too short, the range of strength development will be poor. Any type of glass fiber can be used.
For example, alkali-resistant glass is suitable. E-glass and ordinary glass can be used. As the matrix in which the short fibers or glass fibers are dispersed, an inorganic self-hardening (hydraulic bending) or air-hardening (4) matrix can be used, such as cement (Portland cement, fly ash cement, etc.).
silica cement, blast furnace cement, etc.), calcium silicate. Gypsum can be used.

The same matrix is used for the glass fiber-containing layer and the short fiber-containing layer, and since both layers are laminated in a wet state, the matrix is continuous at the interface between the two layers. As a result, the glass fiber-containing laminate of the present invention has an integral structure in which two types of fiber-containing layers are alternately formed in one type of matrix. The thickness of each fiber-containing layer is 1.5 m/m or less, preferably 0.5 m/m or less.
1m/m~1.

5 m/M, optimally 0.3 m/TrL to 1.0 m/m.

When the thickness is 1.5 m/m or more, the fiber orientation becomes three-dimensional. If the strength is lower than 0.1 m/m, it will be difficult to manufacture. In Figure 1. 4. The outer surface has a glass fiber-containing layer on one side. A glass fiber-containing laminate whose other side is a short fiber-containing layer 2 is shown. The present invention is not limited to this combination. It is also possible to finish both outer surfaces with short fiber-containing layers or both outer surfaces with glass fiber-containing layers.

In this case, if a short fiber-containing layer is formed on the outer surface, a glass fiber-containing laminate that is particularly excellent in terms of secondary processing can be obtained. As mentioned above. Each of the glass fiber-containing layer and the short fiber-containing layer is formed into a relatively thin layer with a thickness of 1.5770 mm or less. The fibers in the valley layer are two-dimensionally oriented.

moreover. Each fiber is approximately 60% vertical. A horizontal 40% directional enclosure is maintained. Next, the manufacturing method of the present invention will be explained.

The present invention provides a method for producing a glass fiber-containing laminate having various excellent features. Let me summarize the manufacturing method. On a rotating endless belt, a length of 10 m/RrL is applied to an inorganic autorigid matrix.
A short fiber-containing layer with a thickness of 1.5 m or less in which the following short fibers are dispersed. A matrix with a thickness of 1.5 m in which glass fibers with a length of 20 m/m or more are dispersed in a matrix of the same quality as the above matrix.
/m or less of glass fiber-containing layers are stacked on top of each other. This manufacturing method includes applying pressure to both layers in an uncured state using a formation adjusting roll to make the fibers in each layer two-dimensionally oriented, and further stacking the layers. Typical features of the manufacturing method of the present invention will be explained below.

1 Production on an endless plate allows continuous production.

2. When pressurized with a formation adjustment roll. Due to the relative motion between the rolls and the endless belt, the fibers are two-dimensionally oriented and biased toward the running direction of the belt, and a consolidation effect is also produced.

Such an effect cannot be obtained simply by vertically pressing the stationary lying fiber layer with a pressing machine or the like without using a texture adjusting roll. 3 A layer containing glass fibers and a layer containing short fibers are stacked on top of each other, and both layers are in an uncured state. By applying pressure with the formation adjusting roll, the above 2 effect appears and both layers become integrated. Even without using an adhesive, no delamination occurs after curing.

In this case, there are no restrictions on how the two layers are stacked, whether they are placed on top or on the bottom. Below, the manufacturing method of the present invention will be explained in detail with reference to the drawings.

Since the glass fiber-containing laminate of the present invention is a lamination of a long fiber-containing layer and a short fiber-containing layer, in the manufacturing method of the present invention, each fiber-containing layer is formed by a method suitable for each fiber, and then laminated. By doing so, glass fiber-containing laminates of excellent quality can be manufactured efficiently.

The second aspect of the manufacturing method of the present invention is a manufacturing method that combines a papermaking method and a spray suction method.

FIG. 2 is a schematic diagram showing the entire glass fiber-containing laminate manufacturing machine used in the method of the first embodiment. In the following explanation, cement is used as the matrix. An example using asbestos as the short fiber is shown below. Pour the raw material slurry in which asbestos is dispersed into cement into vat 15. Cylinder mold 15a
As a result, the raw material slurry is rolled onto a rotating endless belt 16 made of felt to form an asbestos fiber-containing layer.

Glass fibers are spread in a thin layer on the asbestos fiber-containing layer using a glass fiber spreader 11, and cement paste is uniformly spread thereon using a matrix spreader 12 to form a glass fiber-containing layer. Next, while the asbestos fiber-containing layer and the glass fiber-containing layer are both uncured and under pressure from above with the formation adjusting roll 13, the suction box 14a is used from below the endless belt 16 to remove air and Remove excess water. As a result, the cement paste fills the gaps between the glass fibers, forming a double layer in the cement matrix, consisting of a lower layer containing asbestos fibers and an upper layer containing glass fibers. The orientation of the glass fibers is vertical:horizontal = 50:50 as they are scattered, and includes three-dimensional orientation. Appropriate pressure is applied with a formation adjusting roll to obtain a two-dimensional and ideal orientation in terms of strength, with length: width = approximately 60:40. This orientation can be confirmed by bending strength tests. The thus formed double layer is further applied to the second suction box 14b, and after adjusting the moisture content, it is laminated on the forming roll 18 while being pressurized by the under roll 17 until the desired thickness is reached, and then cut. After being developed into a board shape on the development belt 25, the material is further dehydrated under pressure on an iron plate using a pressure machine (not shown) to obtain the glass fiber-containing laminate 1 of the present invention. In the above-mentioned operation, the method that forms a layer containing asbestos fibers is called the papermaking method. A method of forming a glass fiber-containing layer using a spreader is called a spray method, and a suction device such as a suction box is used to remove air and excess moisture from the layer to form a glass fiber-containing layer. This method of forming is called the spray suction method.

FIG. 2 shows the spray suction method. The suction device (suction box 14a) can be installed at an appropriately selected position, but as shown in the figure, the suction box 14a
It is most effective to place the roll 13 in the position shown in FIG. In addition, in the manufacturing method according to the above embodiment, if the water content of the asbestos fiber-containing layer that has been extracted is high, cement powder may be sprinkled on the glass fibers instead of using a matrix sprayer to spread the cement paste. Also, in order to speed up the dispersion of glass fibers, a small amount of cement can be simultaneously spread at the same location as the glass fiber spreader. Furthermore, in this method, by stopping the dispersion of the glass fibers and cement paste or cement powder for the length of one roll of the first forming roll, it is possible to obtain a product with no front or back surface, which has asbestos fiber-containing layers on both outer surfaces. I can do it.

Furthermore, this method can be similarly applied to cases where calcium silicate or the like is used as the matrix, and when pulp, organic synthetic fibers, or inorganic synthetic fibers are used as the short fibers. Using this method, it is possible to continuously mass-produce glass fiber-containing laminates at low cost by simply adding glass fiber spray suction equipment to a conventional paper-making machine.

FIG. 3 is a schematic diagram of a glass fiber-containing laminate manufacturing machine used in the second embodiment of the manufacturing method of the present invention.

An example of using asbestos as the short fiber and cement as the matrix is shown below, but it is not limited to this.
This method is also suitable when using pulp, organic synthetic fibers or inorganic synthetic fibers as the short fibers, and calcium silicate, for example, as the matrix. Cement paste mixed with asbestos is transferred from the paste supply device 19 to the transfer roll 20
A rotating endless belt 16 made of felt
A thin layer of glass fibers is then spread on top of the film using a glass fiber spreader 11, and a cement paste is evenly spread thereon using a matrix spreader 12.

The subsequent treatment is exactly the same as the method according to the first aspect. As the transfer roll 20, those used in printing technology can be used. However. By using a transfer roll. It becomes possible to transfer the paste as a thin layer of uniform thickness onto the endless belt. The major advantages of using transfer rolls are:

By adjusting the gaps between the 12 transfer rolls, the thickness of the formed thin layer can be easily and freely adjusted.

2. Since the paste has a relatively high concentration and can form a thin layer, there is less excess water and power is saved. It is also advantageous in terms of pollution control.

3. Equipment is simple and can be downsized.

The short fibers used in this method are not limited to asbestos;
pulp. Any type of material that can be premixed, such as organic synthetic fibers and inorganic synthetic fibers, may be used.

In addition, one of the common advantages of the above manufacturing methods is that raw boards are cut in a lying state and finished into products, so by mixing cutting waste into the short fiber paste raw material, there is no loss of expensive glass fibers. be. Incorporation of this amount of glass fiber does not pose any problem to the manufacturing process or the product. FIG. 4 schematically shows a manufacturing machine for a glass fiber-containing laminate used in the third embodiment of the manufacturing method of the present invention.

This method is suitable when a matrix with a short curing time, such as plaster, is used and it is difficult to wind the product onto a forming roll. In FIG. 4, reference numeral 21 indicates an endless belt made of a comb or plastic, which rotates in the direction of the arrow.

A paste feeder 19 is mounted on the endless belt in the direction of belt movement. Transfer roll 20, glass fiber spreader 11. Matrix spreader 12, vibration generator 22. There are four sets of ground adjustment rolls 13 from 41 to 44, and the highest? A paste feeder 19, a transfer roll 20, and a texture adjustment roll 13 are lined up. 41 gypsum paste mixed with asbestos
The paste is transferred from the paste feeder 19 onto the endless belt 21 in a thin layer by the transfer roll 20, and the glass fiber is spread on top of it in a thin layer by the glass fiber spreader 11. While uniformly distributing the gypsum paste, a vibration generator 22 applies local vibrations to the fiber layer on the belt. Applying vibration has the effect of promoting the removal of air between the glass fibers, making it easier to fill the gypsum paste with light into the gaps between the glass fibers, and also removing air from the paste. Next, pressure is applied using a formation adjusting roll 13.
Further bilayers are deposited on the thus formed bilayer using no more than 42 devices until the desired thickness is reached.
In this case, if the uppermost layer of the stack is to be an asbestos fiber-containing layer, the last device (device Il45 in FIG. 4) may be used to form the asbestos fiber-containing layer. The thus produced laminate is passed through a curing device 23 to promote curing, cut with a cutter 24 and dried to obtain a product. In the operation described above, the glass fiber-containing layer is applied by a spray method using a spreader. Previously, gypsum was soluble in water and had a short curing time, so it could only be molded using the batten method using molds, and thin pieces could not be made. However, using transfer rolls A thin layer can be produced continuously and with a relatively low water content. This method enables continuous mass production of glass fiber-containing laminates with a matrix of gypsum or the like. The short fibers used in this method are not limited to asbestos, and any fibers that can be premixed such as pulp, organic synthetic fibers, and inorganic synthetic fibers may be used. In FIG. 4, four sets of devices 41 to 44 are shown, and these devices are designed so that the thickness of the laminate to be formed becomes a desired thickness. It can be increased or decreased as appropriate.

The features of the glass fiber-containing laminate of the present invention constructed as described above are listed below in comparison with conventional glass fiber-containing composite boards.

(1) Conventional glass fiber-containing composite boards have extremely high strength due to the special curvature of the glass fibers, but on the other hand, the surface is not smooth. It has drawbacks such as secondary processing, poor paint markings, and high price.

By combining a glass fiber-containing layer and another fiber-containing layer, the glass fiber-containing laminate of the present invention takes advantage of the respective advantages of both fiber layers, and has a new curve as a whole. Moreover, the fibers used in the short fiber-containing layer are not limited to one type, but can be used depending on the purpose, or a mixture of two or more types of fibers can be used.Also, the matrix for dispersing the fibers can be used in cement. The present invention is not limited to any inorganic self-hardening material such as calcium silicate or gypsum, and can be selected from these materials depending on the purpose. (2) In the present invention, a glass fiber-containing layer is used. , Since the thickness of each short fiber-containing layer is 1.5 m/m or less, two-dimensional orientation of the fibers is ensured, and in the manufacturing process, the orientation of the fibers is approximately 60% vertically and 40% horizontally.
%, the effect of the fiber is reduced by 1 in terms of strength.
00%, and 20% as glass fiber.
Since long fibers of m/m to 50m/7rL are used. Compared to conventional composite plates made solely of glass fibers, the strength is equivalent to or greater than that of conventional glass fiber composite plates.

(3) As mentioned above, the fibers in each layer of the glass fiber-containing laminate of the present invention are two-dimensionally oriented and are thin layers of 1.5 m/m or less, so the thickness is uniform and the surface is microscopically smooth. It is.

Moreover, it is composed of alternating layers of glass fiber-containing layers and short fiber-containing layers. Even if some thickness non-uniformity occurs in the glass fiber-containing layer. When pressurizing this with a formation adjustment roll. Due to movement of short fibers. The non-uniformity in the thickness of the glass fiber-containing layer is absorbed by the short fiber-containing layer, resulting in a glass fiber-containing laminate having an extremely uniform thickness as a whole. (4) Another drawback of conventional glass fiber-containing composite boards is that the surface coating curve is poor, but by using a short fiber-containing layer on the surface using fibers with a good surface coating curve, the surface coating curve can be reduced. Greatly improved. (5)
This is because the layers are made up of alternating layers containing different fibers. sound. It exhibits a layering effect (laminate effect) for absorbing heat and impact energy and for bending. (6) Since the matrices constituting the glass fiber-containing layer and the short fiber-containing layer of the glass fiber-containing laminate according to the present invention are of the same quality, the glass fiber-containing laminate as a whole is completely integrated, and no adhesive is needed. Also, no delamination occurs. Next, we will explain the differences in the glass fiber-containing laminates of the present invention due to the differences in the matrices used. Let's talk about Vf notes.

The following describes the cases of typical matrices such as cement, calcium silicate, and gypsum. (1) When cement is used as a matrix, it has high specific gravity, excellent sound insulation, and high strength. It has high impact resistance and excellent freeze-thaw range.
Suitable for exterior materials. (2) When calcium silicate is used as a matrix, it has excellent sound-absorbing curves, heat-insulating curves, heat resistance notes, and processing curves, and is lightweight, making it not only an ideal interior material but also suitable for exterior use.

(3) When gypsum is used as a matrix, a laminate suitable for interior materials with excellent sound absorption, heat insulation, and processing properties can be obtained.

In the future, flue gas desulfurization gypsum is likely to become a by-product. Glass fiber-containing laminates with gypsum as a matrix are also of great significance from the perspective of waste utilization. Another feature when the matrix is calcium silicate or gypsum is that relatively inexpensive E-glass fibers or ordinary glass fibers can be used instead of expensive alkali-resistant glass fibers. Another factor that determines the characteristics of the glass fiber-containing laminate of the present invention is the type of short fibers used in the short fiber-containing layer.

The special features of glass fiber-containing laminates based on typical short fiber types are listed below. (1) When the short fiber is asbestos, it has a heat-resistant envelope and becomes a completely heat-resistant material. It is durable and does not change over time.

By adjusting the ratio of the thickness of the glass fiber-containing layer and the asbestos-containing layer, the asbestos content can be suppressed to 5% or less of the total, and the product can be made without coming into contact with the special chemical barrier barrier coral. I can do it. (2) If the short fibers are pulp, paint them. It is particularly good in secondary processing such as cutting and gluing, and is lightweight and has good heat insulation properties, making it an excellent interior material.

or. Since the material is alternately layered with non-combustible glass fiber-containing layers, it can be certified as a non-combustible material when the amount of pulp is kept below 5% of the total. (3) When the short fibers are organic synthetic fibers. Organic synthetic fibers are very bulky, so they are suitable for weight reduction, and they have excellent impact resistance, and they also have special walls that do not scatter fragments even if they break, and their strength is equal to or higher than that of asbestos, so they are lightweight and high-strength materials. product is obtained.

As the organic synthetic fiber, for example, fibers such as nylon, polypropylene, polyester, acrylic, reinforced rayon, vinylon, carbon, etc. can be used. (4)
When the short fibers are inorganic synthetic fibers, a completely noncombustible material and a laminate with excellent heat resistance and bending can be obtained.

Suitable examples of inorganic synthetic fibers include glass fiber, rock wool, slag wool, shirasu fiber, and mullite fiber. There are alumina fiber and silica fiber. The present invention will be described in detail below with reference to examples.

The fibers described below. The proportions and concentrations of pastes, etc. are all calculated by weight, and the concentrations indicate internal divisions. Implementation 1 Alkali-resistant glass fibers with a length of 25 m/7 TL as raw materials for the glass fiber-containing layer, Portland cement paste with a water-cement ratio W/C = 50%, and Portland cement and fiber length of 6 m as raw materials for the short fiber-containing layer. A slurry with a solid content concentration of 10% was prepared, in which chrysotile asbestos of /r or less was blended in a ratio of 90:10.

The target layer thickness is 0 by the manufacturing method according to the aspect (Fig. 2).
．． A short fiber containing layer of 5 m/m is formed, and a glass fiber containing layer is stacked on top of it to a thickness of 1.0 m/m to form a double layer, and the double layer is stacked 4 times and cut. death. It was expanded to Itabushi. The thickness of the glass fiber-containing laminate thus obtained was 6,4771/771. This laminate is processed by a processing machine (
(not shown) 120kg/CT! Pressure is applied to 20
IZ curing was carried out at ℃ and normal pressure.

The mortality values of the glass fiber-containing laminate thus obtained are shown in Table 2 (?). Examples 2 to 5 The manufacturing conditions of Examples 2 to 5, in which the blend of short fibers was changed from Example 1, are shown in Table 1, and the physical values of the products are shown in Table 2.Example row 6 Glass fiber E glass fibers with a length of 30 m/m and calcium silicate paste with a solid content concentration of 30% are used as raw materials for the containing layer.
A paste with a solid content concentration of 35% was prepared by blending calcium silicate and chrysotile asbestos with a fiber length of 6 m/m or less in a ratio of 90/10 as raw materials for the short fiber-containing layer.

The target layer thickness is 0 by the manufacturing method according to the second aspect (Fig. 3).
, a layer containing short fibers of 5 m/m is formed, a layer containing glass fibers is stacked on top of it to a thickness of 1.0 m/RrL to form a double layer, and the double layer is stacked four times to obtain a thickness of 1.0 m/RrL. 6.5m/m
A glass fiber-containing laminate was obtained. This was cut, spread out on a board, and dried in a trowel dryer pressurized at a pressure of 80 kg/CTl. The physical properties of the glass fiber-containing laminate thus obtained are shown in Table 4 (described later). Implementation Ff!
07-10 Examples 7-10 in which the composition of short fibers was changed in Example 6
The manufacturing conditions of the product are shown in Table 3 (?), and the physical properties of the product are shown in Table 4.
Shown below.

Implementation row 11 Fiber length 25m/MOE as raw material for glass fiber-containing layer
Glass fibers, gypsum hemihydrate (β type) paste with a concentration of 40%, and a paste with a solid content concentration of 50%, which is a mixture of gypsum hemihydrate, asbestos, and pulp in a ratio of 92/6/2 as raw materials for the layer containing short fibers. Got ready.

The target layer thickness is 0 by the manufacturing method according to the third aspect (Figure A).
．． A layer containing short fibers of 5 m/m was formed. A glass fiber-containing laminate having a thickness of 6.0 m/m was obtained by laminating four double layers on top of which a glass fiber-containing layer was stacked to a thickness of 1.0 m/m. This was passed through a curing device at a temperature of 38°C, cut, and dried at low temperature to obtain a product. The circumference values of the products thus obtained are shown in Table 6 (described later). Example rows 12 to 14 Example rows 12 to 14 in which the blend of short fibers was changed in Example 11
The manufacturing conditions for 14 are shown in Table 5 (?), and the product enclosure values are shown in Table 6.
Shown below.

Tables 1 to 6 are listed below.

Table 2. Table 4 shows that cement-based and calcium silicate-based glass fiber-containing laminates are compared to conventional GRC products and flexible boards, and Table 6 shows that gypsum-based glass fiber-containing laminates are compared to conventional GRG products. Bending fracture strength,
It can be seen that the notes on various aspects such as deflection, resistance to southern blows, and close coverage of paint are excellent.

[Brief explanation of the drawing]

FIG. 1 is a perspective view including a partial cross section of a glass fiber-containing laminate according to the present invention. Figure 2 (a schematic diagram of a glass fiber-containing laminate manufacturing machine used in the first embodiment of the manufacturing method of the present invention, Figure 3)
The figure is a schematic diagram of a glass fiber-containing laminate manufacturing machine used in the second embodiment of the manufacturing method of the present invention. FIG. 4 is a schematic diagram of a glass fiber-containing laminate manufacturing machine used in the third embodiment of the manufacturing method of the present invention. In the figure, 1...Glass fiber-containing laminate. 2
... Short fiber containing layer, 3 ... Short fiber, 4
...Glass fiber containing layer. 5...Glass fiber, 6...Matrix. 11゛・゜・・
・Glass fiber spreader, 12... Matrix spreader, 13... Form adjustment roll 14a, 1
4b...Suction box, 15...
...Bat. 15a...Cylinder mold V
l6... Endless belt. 17...
・Under roll, 18...Four sink roll. 19...Paste supply device. 20...
"...Transfer roll. 21... Endless belt, 22... Belt vibrator. 23...
Curing device, 24...Katsuta 1 25...
・It is a deployable belt.

Claims (1)

[Claims] 1. Glass fiber with a length of 20 m/m or more and a glass fiber with a length of 10 m/m or more.
m or less short fibers are dispersed and integrated in alternating layers consisting of a glass fiber-containing layer and a short fiber-containing layer each having a thickness of 1.5 m/m or less in the same inorganic self-hardening matrix, and each layer A glass fiber-containing laminate characterized in that the fibers therein are two-dimensionally oriented. 2. The glass fiber-containing laminate according to claim 1, wherein the fiber orientation is biased in a certain direction. 3. The glass fiber-containing laminate according to claim 1, wherein the inorganic self-hardening matrix is cement and the glass fibers are alkali-resistant glass fibers. 4. The glass fiber-containing laminate according to claim 1, wherein the inorganic self-hardening matrix is calcium silicate, and the glass fibers are E glass fibers or ordinary glass fibers. 5. The glass fiber-containing laminate according to claim 1, wherein the inorganic self-hardening matrix is gypsum, and the glass fibers are E glass fibers or ordinary glass fibers. 6. The glass fiber-containing laminate according to claim 1, wherein the short fibers are asbestos. 7. The glass fiber-containing laminate according to claim 1, wherein the short fibers are pulp. 8. The glass fiber-containing laminate according to claim 1, wherein the short fibers are organic synthetic fibers. 9. The glass fiber-containing laminate according to claim 1, wherein the short fibers are inorganic synthetic fibers. 10 On a rotating endless belt, a short fiber-containing layer with a thickness of 1.5 m/m or less in which short fibers with a length of 10 m/m or less are dispersed in an inorganic self-hardening matrix and a matrix with a length of 20 m in the same material as the matrix. Glass fiber-containing layers with a thickness of 1.5 m/m or less in which glass fibers of 1.5 m/m or more are dispersed are stacked, and the fibers in each layer are oriented two-dimensionally by applying pressure with a formation adjusting roll. A method for producing a glass fiber-containing laminate, characterized by further layering. 11. Claim 10, characterized in that the short fiber-containing layer is formed by a papermaking method, the glass fiber-containing layer is formed by a spray suction method, and the layering is performed by a forming roll. manufacturing method. 12 Forming the short fiber-containing layer using a transfer roll, forming the glass fiber-containing layer using a spray suction method,
11. The manufacturing method according to claim 10, characterized in that the layering is carried out using forming rolls. 13. Claim 10, characterized in that the short fiber-containing layer is formed by a transfer roll, the glass fiber-containing layer is formed by a spray method, and the layering is performed by repeating the above steps. manufacturing method.