JP2001073543A - Inorganic composite finishing material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain excellent durability by forming a finishing material in which ligneous plates and inorganic plates having an inorganic foamed body as a core layer on the obverse and reverse layers of mineral fiber, inorganic powdery material, and a binder, are integrally laminated alternately through an adhesive. SOLUTION: An inorganic composite finishing material A in which inorganic plates 1 and ligneous plates 2 are alternately laminated and the inorganic plates are arranged in the uppermost layer and the lowermost layer is formed. The ligneous plate 2 is made of veneer or MDF, etc. The inorganic plate 1 is constituted of three layers that obverse and reverse layers composed of a mineral fiber, an inorganic powdery material, and a binder as essential components and a core layer having an inorganic foamed body and a binder as essential components are integrally laminated and the specific gravity is set within a range of 0.6-0.9 as a whole. Then, the inorganic plates 1 are disposed in the uppermost layer, the central layer, and the lowermost layer and veneers 2 are disposed between mutual inorganic plates 1 to adhere the inorganic plate 1 and the veneers 2 and mutual veneers 2 with a melamine adhesive. Therefore, this composite finishing material excellent in bending strength and nail-retentive force and also water-absorbing size-stability can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an inorganic composite construction material obtained by laminating an inorganic board and a wood board and having excellent water resistance, durability, nail holding power, workability, and the like.

[0002]

2. Description of the Related Art Conventionally, as a base material of a construction material used outside such as an opening frame such as a window frame or a door frame or a parting edge, a plywood, an LVL (single-layer laminated material), Glued lumber, particle board, MDF (medium fiber board) and the like are used, and are subjected to surface processing such as painting and applying a decorative sheet. However, since the base material is made of a wooden material, the base material may be stained by mold, discoloration, corrosion, or the like due to dew or rainwater, or the decorative portion on the surface may be peeled off. In addition, there are drawbacks such as warping and twisting and cracking due to repeated moisture absorption and drying.

In order to solve these drawbacks, it is conceivable to use an inorganic material made of a material such as calcium silicate or cement. However, these inorganic materials are hard and brittle, so that the surface processing is difficult, and the working materials are also difficult. Generally, there are many elongated shapes, so that they are easily broken, and furthermore, the holding power of nails and the like is weak. Therefore, these materials cannot be said to be suitable materials for these construction materials.

In view of the above problems, the present invention has a water resistance and durability as a work material by arranging an inorganic board and a wood board in a specific configuration and integrally integrating them, and has a nail holding power and a workability. An object of the present invention is to provide an inorganic composite working material having excellent properties.

[0005]

According to the first aspect of the present invention, an inorganic foam and a binder are essential for a wood board, a front and back layer containing mineral fibers, an inorganic powder and a binder as essential components. A three-layer inorganic plate having a specific gravity of 0.6 to 0.9 obtained by laminating and integrating core layers as components is alternately laminated and integrated via an adhesive, and the inorganic plate is disposed on the uppermost layer and the lowermost layer. The configuration is made up of

According to this structure, the inorganic plate having a low nail holding force and being vulnerable to an impact and the wooden plate having a high toughness and a high nail holding force are alternately bonded and integrated to provide an impact strength,
Bending strength and nail holding power are improved. In particular, when the fiber direction of the wooden board is parallel to the long side direction of the inorganic composite construction material, the bending strength in the long side direction is improved, and as is generally applied to this kind of construction material, Cutting is preferable because a smooth surface can be obtained without exposing the rough surface of the wood board fiber.

[0007] Since the inorganic plates are arranged on the uppermost layer and the lowermost layer, the wooden boards having poor water resistance and fire resistance are not directly exposed to the outside. It is possible to prevent the occurrence of peeling or cracking, to improve the fire resistance as compared with a wood material, and to prevent decay and deterioration due to termites. In addition, since it is sandwiched and integrated from both sides by an inorganic plate that has excellent water absorption dimensional stability, it suppresses expansion, contraction, warping, and twisting of wooden boards that have poor water absorption dimensional stability, and is less likely to be warped or twisted and has good dimensional stability. Is obtained.

[0008] The inorganic plate has a specific gravity of 0.6 to 0.9, which is close to the specific gravity of the wooden material. Unlike the case where the wooden plate is combined with the calcium silicate plate or the cement plate, the blade is not used when cutting or other processing. Since the cuttability is similar, cracking and fuzzing are unlikely to occur, and the workability of the surface is as excellent as wood materials.

According to the second aspect of the present invention, both sides of the wooden board have mineral fibers, an inorganic powder and a binder as essential components, and a front and back layer having an inorganic foam and a binder as essential components. A three-layer inorganic plate having a specific gravity of 0.6 to 0.9 in which the layers are laminated and integrated is laminated and integrated via an adhesive.

According to this structure, in addition to the effect of claim 1,
Since the central part of the construction material is made of wood, it is fixed directly to the wood when nails or screws are driven into the mouth of the wood, so it has excellent holding power and is damaged even if a joint such as male fruit is provided. hard. This configuration is suitable for a relatively thin working material.

According to the third aspect of the invention, the inorganic fiber, the inorganic powder, and the front and back layers containing a binder as an essential component are laminated and integrated with a core layer containing an inorganic foam and a binder as an essential component. A three-layer inorganic plate having a specific gravity of 0.6 to 0.9 is disposed on the uppermost layer, the center layer, and the lowermost layer, and a wooden plate is laminated and integrated between the inorganic plates via an adhesive. It has a configuration.

According to this structure, in addition to the effect of the first aspect, since the central portion of the construction material is made of an inorganic material, when driving in with nails or screws, external rainwater penetrates through the nails or screws. Even if it does, it does not penetrate directly into wood, so it is more water resistant. As compared with the configuration of the second aspect, although the holding force at the time of driving a nail or a screw into the edge of the wood is weak, the holding force is relatively small, and the holding force necessary for practical use can be maintained.

That is, since the inorganic plate is usually a brittle material, when the nail or screw is driven, the inorganic plate is pushed and spread in the thickness direction around the axis, so that the peripheral portion in contact with the axis is weakened and held. Although the force is reduced, when the wooden boards are laminated and fixed on both sides of the inorganic board as in this configuration, the wooden boards on both sides hold down the spread of the inorganic board and tightening action against nails and screws driven in occurs. The decrease in holding power is small. This configuration is suitable for a relatively thick work material.

According to a fourth aspect of the present invention, in the inorganic composite construction material according to the first, second, or third aspect, the wooden board is formed by laminating two or more veneers.

According to this configuration, in addition to the effects of the first, second, and third aspects, the bending strength and the nail holding force are further improved. The fiber direction of the wooden board laminated in plural layers is not particularly limited, and can be changed according to use conditions. In the case of construction materials, cutting is often performed in the long side direction for decoration, and if the fiber direction of the veneer is orthogonal to the long side direction, the rough surface of the fiber will be exposed during cutting, so the fiber direction of the veneer Are preferably arranged in parallel to the long side direction.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment according to the present invention will be described with reference to FIG. The inorganic composite construction material (A) of the present invention has a configuration in which the inorganic plates (1) and the wooden plates (2) are alternately laminated, and the inorganic plates (1) are arranged in the uppermost layer and the lowermost layer.

The wood board (2) is made of a wood veneer, and may be two or more layers depending on the required performance other than the single wood board. By laminating the veneers with the fiber directions orthogonal to each other, the bending strength in both long side and short side directions can be improved. In addition, when the fiber direction is aligned parallel to the long side direction of the plate, a work material resistant to bending and the like can be obtained, and a beautiful surface can be obtained when cutting is performed in the long side direction.
As wood board, besides veneer, MDF (medium fiber board), O
SB (oriented board), particle board, or the like can be used.

The inorganic plate (1) has a three-layer structure in which a mineral fiber, an inorganic powder, a front and back layer containing a binder as an essential component, and an inorganic foam and a core layer containing a binder as an essential component are laminated and integrated. The specific gravity is in the range of 0.6 to 0.9, and specifically, is referred to as a volcanic vitreous multilayer plate.

Here, the composition and manufacturing method of the volcanic glassy multilayer plate will be described. Rock mineral, slag wool, glass wool, or the like can be used as the mineral fiber that mainly forms the front and back layers 1a and 1b and develops strength, and the addition amount is 20 to 80% by weight. The inorganic powder is used to increase the surface hardness and smoothness, and aluminum hydroxide, calcium carbonate, silica sand and the like can be used, and the added amount is 10 to 65% by weight. Starch, polyvinyl alcohol or the like can be used as a binder for binding and integrating these. In addition, it is preferable to add a water-resistant binder such as a phenol resin and an acrylic resin in order to impart water resistance. The added amount of these binders is 5 to 30% by weight in total. Organic fibers such as pulp and polypropylene may be added in an amount of 2 to 15% by weight to increase the strength. These were poured into water and stirred to obtain a slurry, and a wet mat to be the front and back layers was obtained.

On the other hand, as the inorganic foam which becomes the main component of the core layer 1c and is effective in reducing the weight of the plate material, pearlite, shirasu foam, glass foam and the like can be used. is there. As the binder for binding the inorganic foam, the same binder as the front and back layers can be used, and the total amount of the binder is 5 to 30% by weight. 4 ~ 3 organic fibers such as pulp and polypropylene to increase strength
0% by weight may be added. An inorganic powder such as aluminum hydroxide, calcium carbonate, silica sand or the like may be added as necessary.
Must be: These are mixed by atomization of water,
The surface mat is spread and deposited on the wet mat of the back layer, the surface wet mat is disposed thereon, heated and pressed by a hot press, and then dried by a drier, and the specific gravity of the front and back layers is 0.8 to 1.
2. The specific gravity of the core layer is 0.2 to 0.7, and the total specific gravity is 0.4
~ 0.9 inorganic plates (1) were obtained.

Next, a method for producing the inorganic composite working material (A) will be described. As shown in FIG. 1, the inorganic plate (1)
And a wooden board (2). At this time, the adhesive is cured through a heat and pressure process through a thermosetting adhesive (melamine, urea melamine, etc.) between the plates to form a composite and integrated, then cured, sanding to adjust the thickness, desired dimensions And lapping and painting were performed as necessary.

The inorganic composite construction material of the present invention is particularly suitable for a construction material used outside such as an opening frame such as a window frame and a door frame, a parting edge, and a decorative frame.
It can also be used for parting edges, skirting boards, peripheral edges, stair members, etc.

[0023]

(Example 1) As shown in FIG. 1, an inorganic plate (volcanic glassy multilayer plate (trade name: Dylite)) having a thickness of 6.0 mm was formed on the uppermost layer, the center layer, and the lowermost layer. ), And the fiber direction between the inorganic plates is 3.4 mm in the long side direction.
Veneer (2) was placed. The same melamine adhesive was applied at 400 g / m ² to the inorganic plate and the veneer and veneer to each other. Then, after cooling with a press for 30 minutes,
Heat-pressed for 0 seconds. After curing for about half a day, the front and back surfaces were sanded to obtain a 24 mm working material (A).

The composition of the inorganic plate used in this example (hereinafter the same inorganic plate was used in Examples 2, 3 and 4) is as follows. The front and back layers are rock wool 65 as mineral fibers.
% By weight, 20% by weight of aluminum hydroxide as an inorganic powder, 5% by weight of pulp as an organic fiber, 5% by weight of starch as a binder, and 5% by weight of powdered phenol as a water-resistant binder. 65% by weight of pearlite as a foam, aluminum hydroxide 20 as an inorganic powder
Inorganic board (volcanic glassy multi-layer board) consisting of 5% by weight of organic fiber, 5% by weight of pulp as organic fiber, 5% by weight of starch as binder, 5% by weight of powdered phenol as water resistant binder (Trade name: Dyelite)).

(Embodiment 2) As shown in FIG.
A 6.0 mm-thick inorganic plate (trade name:
Dyelite) (11), and two single plates (12) each having a thickness of 3.4 mm in the long side direction were arranged between the inorganic plates. According to the same manufacturing method as in Example 1, 30
mm of the inorganic composite working material (B) was obtained.

(Embodiment 3) As shown in FIG.
A 6.0 mm-thick inorganic plate (trade name:
Dyelite) (21), and a veneer (22a) having a thickness of 3.4 mm in the long side direction and a veneer (3.4 mm in the short side direction) between the inorganic plates. 22b)
Were placed one on top of another. A 30 mm inorganic composite working material (C) was obtained by the same manufacturing method as in Example 1.

(Embodiment 4) As shown in FIG.
A single plate (32 mm) having a thickness of 3.4 mm in the long side direction between the 0 mm inorganic plate (trade name: Dylite) (31)
a), a single plate (3) having a thickness of 1.6 mm in the fiber direction in the short side direction
2b), three single plates (32a) having a thickness of 3.4 mm in the fiber direction in the long side direction were stacked and arranged. By the same manufacturing method as in Example 1, a 20 mm inorganic composite working material (D) was obtained.

Comparative Example 1 A commercially available softwood plywood having a thickness of 24 mm was used. (Comparative Example 2) A commercially available MDF (medium fiber board) having a thickness of 24 mm was used.

Specimens were cut out from the working materials of Examples and Comparative Examples and subjected to a screw pull-out test and a water absorption dimensional change test as described below.

Screw pull-out test According to JIS A 5905, a) Surface pull-out strength: A screw having a diameter of 3.5 mm and a length of 38 mm was placed 15 m from the surface (top or bottom layer) of the test piece.
m, and a pull-out test was performed at a pull-out speed of 1 mm / min. b) Pull-out strength at tip end: 3.5 mm diameter and 38 mm length
Of the test piece was driven into the test piece to a depth of 15 mm from the tip end thereof, and a pull-out test was performed at a pull-out speed of 1 mm / min. Water absorption dimensional change rate Using a test specimen of width 100 mm x length 300 mm, JI
In accordance with SA 5905, it was immersed in water at 20 ° C. for 24 hours, and the dimensional change was measured with a dial gauge.

Table 1 shows the results of the screw pull-out test, and Table 2 shows the results of the water absorption dimensional change.

(Table 1) Surface pull-out strength (kgf) Cut edge pull-out strength (kgf) Example 1 84.6 66.3 Example 2 86.4 75.0 Example 3 84.9 68.3 Example 4 100.7 141.9 Comparative Example 1 95.3 91.4 Comparative Example 2 91.8 87.1

(Table 2) Length dimension change rate (%) Width dimension change rate (%) Thickness dimension change rate (%) Example 1 0.12 0.25 1.65 Example 4 0.16 27 1.82 Comparative Example 1 0.22 0.28 3.40 Comparative Example 2 0.16 0.24 4.80

As shown in Table 1, in Examples 1, 2, and 3, the surface pullout strength is about 90% of that of the comparative example, and there is no practical problem. Example 4 has strength higher than that of the comparative example due to the effect of the three laminated single plates.
In Examples 1, 2, and 3, the screws are driven into the inorganic plate portion in terms of the pull-out strength, but the wooden plates on both sides suppress the spread of the inorganic plate and cause a tightening action on the screw that is driven. The strength was maintained at about 70 to 90%, which was a practically usable level. Example 4 has a higher strength than the comparative example because screws are driven into the central veneer portion. Example 4 similarly shows superior results as compared with the plywood of Comparative Example 1 using a veneer in the case of a commercially available plywood because the strength varies greatly depending on the veneer used and the manufacturing conditions. It seems to be.

As shown in Table 2, in Examples 1 and 4, the rate of change in length and width was equal to or less than that of the comparative example, and the rate of change in thickness was less than that of the plywood of Comparative Example 1. The value is about ２ as compared with the MDF of Comparative Example 2, and the problem such as warping and twisting hardly occurs even when exposed outdoors. The reason why the rate of change in Example 4 is larger than that in Example 1 is that the proportion of the wood board used for the construction material is large. When the proportion of the inorganic board is increased, the dimensional stability of water absorption is improved.

[0036]

According to the present invention, an inorganic composite structure having excellent bending strength and nail holding power, excellent water absorption dimensional stability, and low warpage and twisting is obtained by alternately laminating and integrating a wooden board and an inorganic board. Wood is obtained. In addition, since the inorganic boards are arranged on the uppermost layer and the lowermost layer, the wooden boards are not directly exposed to the outside, and it is possible to prevent mold, discoloration, corrosion due to water absorption, and the occurrence of peeling or cracking of the surface decorative portion. . Further, since the inorganic plate approximates the specific gravity and the cutting ability of the wooden plate, the cutting and surface workability are as excellent as the wooden material.

According to the second aspect of the present invention, since the central portion of the construction material is made of a wooden board, it is excellent in the nail holding force on the wooden surface.

According to the third aspect of the present invention, since the central portion of the construction material is made of an inorganic material, even if external rainwater penetrates through the nail or screw when the nail or screw is driven in, the wood material is directly It is more water resistant because it does not penetrate into the material.

According to the invention of claim 4, the bending strength and the nail holding force are further improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of an inorganic composite working material according to Example 1 of the present invention.

FIG. 2 is a sectional view of an inorganic composite working material according to Example 2 of the present invention.

FIG. 3 is a sectional view of an inorganic composite working material according to Example 3 of the present invention.

FIG. 4 is a sectional view of an inorganic composite working material according to Example 4 of the present invention.

[Explanation of symbols]

 1, 11, 21, 31 ... inorganic board 2, 12, 22, 32 ... wood board A, B, C, D ... inorganic composite building material

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) E06B 1/32 E06B 1/32 (72) Inventor Hiroaki Kuniya 1-to-1 Inami-cho, Inami-cho, Higashi Tonami-gun, Toyama Prefecture F term in Industrial Co., Ltd. (reference) 2E011 CA03 CA05 CA06 CB00 4F100 AA00A AA00B AA00C AA00E AC00A AC00C AC00E AP01D AP03D AS00A AS00C AS00E BA05 BA06 BA08 BA10A BA10E DE01A DE01C DE01E DG00E DG00E DG00E DG00E DG00B JL04 JN28 YY00A YY00B YY00C YY00E

Claims (4)

[Claims] 1. A specific gravity of 0.6 obtained by laminating and integrating a wood board, a mineral fiber, an inorganic powder, and a front and back layer containing a binder as an essential component and a core layer containing an inorganic foam and a binder as an essential component. ~ 0.
9. An inorganic composite construction material, wherein the three-layered inorganic plates are alternately laminated and integrated via an adhesive, and the uppermost layer and the lowermost layer are disposed with the inorganic plates. 2. A specific gravity of 0 in which a core layer containing an inorganic foam and a binder as essential components and a core layer containing an inorganic foam and a binder as essential components are laminated and integrated on both surfaces of a wooden board on both sides of a mineral fiber, an inorganic powder and a binder. .6
An inorganic composite working material characterized in that a three-layer inorganic plate having a thickness of 0.9 to 0.9 is laminated and integrated via an adhesive. 3. A specific gravity of 0.6 to 0.9 in which a core layer containing an inorganic foam and a binder as essential components is integrally laminated on a front and back layer containing mineral fibers, an inorganic powder and a binder as essential components. The three-layer inorganic plate is disposed on the uppermost layer, the central layer, and the lowermost layer, and the wooden plate is laminated and integrated between the inorganic plates with an adhesive therebetween. Wood. 4. The inorganic composite construction material according to claim 1, wherein the wooden board is formed by laminating two or more veneers.