JPH03112602A - Woody floor material - Google Patents

Abstract

PURPOSE:To manufacture a floor material, hard to burn, hard to be marked and not generating color change or corrosion and with rich woody feeling, by using a material consisting of a floor material timber for a section exposed on the surface and a modified timber including an insoluble, non-combustible inorganic substance inside for the timber portion constituting the section exposed on the surface of the timber section. CONSTITUTION:The surface section of a woody heating floow material A is constituted by arranging plywoods 3 including an insoluble non-combustible substance inside, and an electrical heater channel 6 is disposed below said plywoods and laminated on a base 5. As for the insoluble non-combustible inorganic substance, alkali metal such as Na or K, alkaline earth metal such as Ca, Ba, Mg or Sr, transition element such as Mn, Ni or Cd, carbon group element such as Si or Pb, and Zn or Al is used. The insoluble non-combustible inorganic substance is composed and fixed in the timber by impregnation and, if necessary, the timber surface is washed with water and dried to manufacture a modified timber. The modified timber thus manufactured is provided with the woody feeling which is not damaged at all, superior appearance and also superior resistance to corrosion, mothproof properties, dimension stability, dynamic strength, resistance to wear, non-flammable properties, resistance to water, resistance to weather and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wooden flooring material used in general houses, housing complexes, public facilities, etc.

(Conventional technology) In recent years, wooden flooring materials used in general houses, apartment complexes, public facilities, etc. have been treated with WPC, which generates plastic inside the wood, or are coated with urethane on the surface. Abrasion resistance (surface hardness) of wood,
Flooring materials with improved dimensional stability, antiseptic properties, etc. have become mainstream (problems to be solved by the invention). ), dimensional stability, antiseptic properties, etc., but on the other hand, the presence of resin (organic matter) inside WPC-treated wood impairs the softness and warmth characteristic of wood. In addition, because it is easily flammable, it cannot be used in areas that require flame retardancy (fire protection).Therefore, in recent years, wood flooring treated with WPC has been used in buildings that are becoming increasingly high-rise. It is no longer suitable for flooring materials that require flammability (fire retardant).

Furthermore, there is a problem in that flooring materials used for floors for footwear in entrances and the like and floors in kitchens and the like are required to have water resistance, weather resistance, and the like. Furthermore, it goes without saying that flooring materials that are generally desired to have sufficient insect repellency, mechanical strength, and the like.

In view of the above circumstances, this invention has excellent antiseptic and insect repellent properties, dimensional stability, mechanical strength, abrasion resistance (surface hardness), flame retardance (fire retardant properties), water resistance, weather resistance, etc., and is difficult to burn. safe and
To provide a flooring material with a rich wood feel that is resistant to scratches and does not discolor or rot over time.

[Means to solve the problem]

As a result of repeated studies to solve the above problems, the inventors discovered the effectiveness of using modified wood containing insoluble and nonflammable inorganic substances, and completed the present invention.

That is, the present invention is a flooring material in which at least a portion that appears on the surface is made of wood, and that the wood that constitutes at least the portion that appears on the surface of the wood portion is a modified wood that contains an insoluble nonflammable inorganic substance inside. Features.

The method for producing the modified wood used in the wooden flooring material according to the present invention is not particularly limited, but the method described below is preferred.

There are no particular limitations on the raw material wood for the above-mentioned modified wood.
Examples include raw wood logs, sawn timber products, sliced veneers, and plywood. There are no limitations on the tree species, etc.

In addition, the insoluble, nonflammable inorganic substances (insoluble products) that are generated in wood and dispersed and fixed in the wood structure are not particularly limited, but include, for example, borates, phosphates, hydrogen phosphates, carbonates, etc. salts, sulfates, hydrogen sulfates, silicates,
Examples include various salts such as nitrates and hydroxides. Among these salts, specific examples of carbonates include Ba
CO! , CaC0*, FeCO5, MgCOx,
MnC0x, N iCO! , Z n C01, etc. Two or more of these may coexist in the wood. The insoluble, nonflammable inorganic substance within the wood may be fixed in the form of a reaction with wood cellulose.

Note that one type of insoluble nonflammable inorganic substance may contain two or more types of each of the cation and/or anion moieties described below.

In order to generate the above-mentioned insoluble non-combustible inorganic substance in the wood tissue, an aqueous solution prepared with a group of inorganic compounds constituting the cationic part of the insoluble non-combustible inorganic substance, that is, a cation-containing treatment liquid, and an anionic part constituting the insoluble non-combustible inorganic substance are used. An aqueous solution prepared with another group of inorganic compounds, that is, an anion-containing treatment solution, is separately and sequentially impregnated into the wood structure. The cation-containing treatment liquid and the anion-containing treatment liquid can be impregnated alternately once or multiple times. When impregnating multiple times, the impregnation may be performed not alternately but continuously.

The cation moiety of the insoluble nonflammable inorganic substance includes, for example, alkali metals such as Na and C;
Alkaline earth metals such as a, Ba, Mg, Sr, Mn,
Transition elements such as Ni and Cd, carbon group elements such as St and Pb,
Examples include ZnXAA. Among these, Ca
, Ba, MgZn and Al are preferred.

Examples of the anion portion of the insoluble nonflammable inorganic substance include B4 ot and BO.

, PO4, CO8, SO4, NO8, 0H1C1! , B
Examples include r, F, ■, and OH. Among these, BO,, PO,, Cot, SO4 and OH anions are preferred. Furthermore, among the anions, B,
O,, BO, and PO4 have a flame retardant effect by promoting carbonization, CO, has a flame retardant effect by generating nonflammable gas, and C
Halogens such as 1, F, and Br can be expected to have flame retardant effects by inhibiting chain reactions in flaming combustion and generating nonflammable gas, respectively. In addition, CI! , F, and Br have excellent flame retardant effects, but they generate a large amount of smoke, so care must be taken when using them.

The above cations and anions are arbitrarily selected depending on the composition of the desired insoluble, nonflammable inorganic substance to be produced in the wood, and by dissolving the water-soluble inorganic substances containing each of these ions in water separately, the desired A cation-containing treatment liquid containing cations and an anion-containing treatment liquid containing desired anions are prepared. However, since not all combinations of cations and anions are possible, it is preferable to select an appropriate combination that can be used, taking into consideration constraints such as the ionic radius.

As the inorganic substance that dissolves in water to produce the above-mentioned desired cation, M g CI! z, MgBrz,
Mg S04' Hg O, Mg (NOs)t
' 6 Hg 01CaC1z , Ca]3r,
, Ca (NOs)z , BaCf1・2H20, B
aBrx, Ba (Now)z, AIc! ! s
,AIBrt ,Alz(SOa)t ,,AI! (
Examples include, but are not limited to, N 0x)s ・9 Hz OlZnClg and the like. however,
Drugs other than halides have low solubility and are difficult to obtain at the required concentration, but halides are preferred because they have high solubility and are easy to obtain at the required concentration. Examples of inorganic substances that dissolve in water to produce the above-mentioned desired anions include Na t COs, (NH4)! COs, Hg
SO4, NalSO4, (NH4)z Sot
, Hz PO4, Nat HPO4, (NHa)t
HPO4, Hz Bow, Na Box,
Examples include, but are not limited to, NH4B Oz and the like. Each of the above water-soluble inorganic substances may be used alone, or a plurality of types may be used in combination in one treatment liquid within the range where a uniform aqueous solution can be formed without reacting with each other.

The inorganic substance impregnation treatment of the raw material wood using the above-mentioned cation-containing treatment liquid and anion-containing treatment liquid is performed, for example, as follows.

First, one of the two treatment liquids (the first liquid) is impregnated into the wood by immersing the raw material wood in the same treatment liquid. After impregnating with the first liquid, a treatment liquid (second liquid) containing ions of a partner that reacts with the first liquid is similarly impregnated to generate insoluble and nonflammable inorganic substances inside the wood.

Next, as described above (after the two liquids, an anion-containing treatment liquid and a cation-containing treatment liquid, are impregnated), a third liquid, a fourth liquid, etc. are prepared as necessary. The product layer may be densified by repeated impregnation.

The cation/anion-containing side treatment liquids used at this time may be of the same type or 1jAM, and their concentration is not particularly limited.

The impregnation treatment method for each liquid, the impregnation treatment time, etc. are not particularly limited, and impregnation can be carried out under reduced pressure or by coating.

In addition, prior to the impregnation treatment with the first liquid, it is recommended that the raw material wood be subjected to a water saturation treatment so that the wood is sufficiently saturated with water. This is because the ions contained in the first liquid can be rapidly diffused using the water in the wood as a medium, and the processing time can be shortened. The water saturation treatment method is not particularly limited, but may be carried out by submerged wood storage, steaming, impregnation under reduced pressure, impregnation under pressure, or the like. In addition, the first
When the liquid is impregnated under reduced pressure, it is not necessarily necessary to carry out this water saturation treatment.

After the impregnation treatment, curing can be performed as necessary to promote the production reaction of insoluble and nonflammable inorganic substances.

After the insoluble, nonflammable inorganic substance is generated and fixed in the wood by the above impregnation treatment, the surface of the wood is washed with water, if necessary, and dried to obtain a modified wood.

The ratio between the amount of bath used for the water saturation treatment, impregnation treatment, etc. and the amount of wood is not particularly limited, but for example, the amount of bath is about 10 times the weight of the untreated wood.

Through each of the above treatments, it is possible to efficiently obtain modified wood that has excellent antiseptic and insect repellent properties, dimensional stability, etc., and is flame retardant.The obtained modified wood has inorganic substances impregnated inside the wood.・Because it is fixed, the wood texture is not impaired, and in addition to the above performance, the wood has an excellent appearance.

By using the modified wood containing an insoluble non-combustible inorganic substance inside or in whole, it is possible to improve the antiseptic and insect repellent properties, dimensional stability, mechanical strength, abrasion resistance, It is possible to obtain a wooden flooring material with excellent flame retardancy, water resistance, weather resistance, etc.

FIG. 1 shows a wooden heated flooring material which is an embodiment of the wooden flooring material according to the present invention. As shown in this figure, in this wooden heating floor material A, plywood 3 containing insoluble and non-combustible inorganic substances is lined up to form the surface part, and the bottom side of these plywood sheets is used for heating. For this purpose, an electric heater panel 6 (inside of which an electric heater 7 is stretched) is arranged, and the electric heater panel 6 is laminated on the substrate 5.

It goes without saying that the wooden flooring material according to the present invention is not limited to the embodiments described above, and its shape, processing, assembly method, etc. are not particularly limited.

Furthermore, in the wooden flooring according to the present invention, it is not necessary that all of the material is wood, and as in the above embodiment, in order to create a woody feel, at least the portion that appears on the surface may be made of wood. There are no restrictions on the species of wood. In addition, it is not necessary that all of the wood parts be modified wood containing insoluble, nonflammable inorganic substances inside, and the wood that constitutes at least the portion that appears on the surface of the wood part may be the above-mentioned modified wood. As the material, for example, in addition to using a thick solid board made of modified wood, plywood, etc., which is made by gluing and laminating a thin veneer made of modified wood (such as rotary veneer) as the outermost layer, can also be used. can. In that case, the inside of the plywood may be untreated wood (species, thickness, etc. are arbitrary) that does not contain insoluble, nonflammable inorganic substances, or conventional wp wood.
Modified wood such as C can be used. Of course, in the case of plywood, modified wood containing insoluble, non-combustible inorganic materials can also be used for all the veneers.

[For production]

The modified wood used in the wood flooring material of this invention is one in which the voids such as conduits inside the wood, the internal cavities, and the wood cell walls are filled with insoluble, nonflammable, hard inorganic substances. It has characteristics.

First, water resistance is improved because the voids are eliminated, preventing water from penetrating into the wood.

Second, the interior of the wood cell walls is occupied by the filler, producing a bulk effect, which makes it difficult for the wood itself to expand or contract. As a result, dimensional stability is improved and various mechanical strengths are also excellent.

Thirdly, the wood cells are reinforced, which increases the surface hardness, among other things.

Fourth, this insoluble, non-combustible inorganic material that fills the internal cavity of the wood does not provide nutrients for fungi and living things, so it prevents fungi and insects from entering the wood, and it has antiseptic and insect repellent properties. improve.

Furthermore, in addition to the fact that the wood is composited with nonflammable inorganic substances (inorganic coating), depending on the type of inorganic substance, it can also have the effect of improving flame retardancy, making the wood highly flame retardant. become.

Here, once the insoluble and nonflammable inorganic substances are fixed in the wood structure, there is little possibility that they will be dissolved out of the wood thereafter, so there is little worry that their effects will be diminished.

Moreover, since this modified wood contains inorganic substances only inside it, the woody appearance is not impaired.

In the wooden flooring material according to the present invention, at least the portion that appears on the surface is made of wood, and the wood constituting at least the portion that appears on the surface of the wood portion has the above-mentioned characteristics including an insoluble, nonflammable inorganic substance inside. It is a modified wood with Therefore, the wooden flooring material according to the present invention has excellent antiseptic and insect repellent properties, dimensional stability, mechanical strength, abrasion resistance (surface hardness), flame retardancy (fire retardancy), water resistance, weather resistance, etc. It is free from discoloration, rot, mold growth, and dimensional changes (blackness), and is flammable, safe, scratch-resistant, and has a rich wood texture.

〔Example〕

Specific examples and comparative examples of the present invention are shown below, but the present invention is not limited to these examples.

First, a rotary veneer of Agatis wood with a thickness of 3 km was heated to 80°C.
It was saturated with water. Next, BaCl t and HBO,
An aqueous solution at 80°C containing 2 mol/l of
) f HPO, H, BO, 4 mol/l each 80
After immersing the veneer saturated with water in the aqueous solution at ℃ for 4 hours each, the veneer was washed in running water for 24 hours and dried to obtain a veneer containing insoluble nonflammable inorganic substances inside. Ta. Thereafter, as shown in Fig. 2, the obtained veneer 1 was laminated with a water-resistant adhesive 2 (resorcinol type).
A 5-ply plywood 3 as shown in A1 and a 9-ply plywood 4 as shown in BL were prepared.

Using the thus obtained 5-ply plywood 3 and 9-ply plywood 4, the following examples were obtained.

Embodiment 1 - As shown in FIG. 1, an electric heater panel 6 is laminated on a substrate 5, and 5-ply plywood 3 that has undergone a predetermined processing is laminated side by side on the surface of the electric heater panel 6. Wooden heating floor material A was obtained.

Embodiment 2 - As shown in Fig. 3, a wooden heating floor material B is obtained by layering 5-ply plywood 3, which has been subjected to a predetermined process, on the surface of a heat equalizing plate 8. Ta. A hot water vibrator 9 is passed through the heat equalizing plate 8 inside.

Example 3 - Using two 5-ply plywood boards 3 that have been processed in a specified manner, the fourth
As shown in the figure, a wooden flooring material C for shoes on was obtained by stacking the inorganic boards 10 between them.

Example 4 - Using two 5-ply plywood boards 3 that have been processed in a specified manner, the fifth
As shown in the figure, by sandwiching the preservative plywood 11 between these and stacking them, a wooden flooring material for shoes to be worn was obtained.

Example 5 - Using three pieces of 9-ply plywood 4 that have undergone a predetermined process, the sixth
As shown in the figure, by arranging these pieces horizontally, a wooden flooring material E for shoes on shoes was obtained.

- Comparative Example 1 - In Example 3, the procedure was the same as in Example 3, except that untreated wood containing no inorganic substance inside was used instead of modified wood containing an insoluble nonflammable inorganic substance inside. A wooden flooring material for shoes was obtained.

The wood flooring materials of Examples 1 to 5 and Comparative Example 1 thus obtained were subjected to a decay resistance test.
The weight loss rate of the floor material after 6 weeks in a decay test using an agar medium with a nutrient solution composition specified in WPA Standard No. 1 is as follows:
For the wooden flooring materials of Examples 1 to 5, it was 0%, and for the wooden flooring material of Comparative Example 1, it was 30%.

〔Effect of the invention〕

The wooden flooring material according to the present invention has a rich wood feel because at least the surface portion thereof is made of wood, and the wood constituting at least the surface portion of the wood portion has weather resistance, water resistance, and antiseptic properties.・Since it is a modified wood with excellent insect repellency, dimensional stability, mechanical strength, abrasion resistance (surface hardness), flame retardancy (fire retardancy), etc., it is free from rot, mold growth, termite damage, and dimensional changes.・It is safe, non-flammable, resistant to scratches, and maintains a good wood quality over a long period of time.

[Brief explanation of drawings]

1 and 3 are perspective views of two types of wooden heating floor materials according to embodiments of the present invention, and FIG. 2(a) is a
A cross-sectional view showing the lamination specifications of a 5-ply plywood made of a veneer containing an insoluble non-combustible inorganic substance inside, Figure 2 (b) is a sectional view showing the lamination specification of a 9-ply plywood made of a veneer containing an insoluble non-combustible inorganic substance inside. The cross-sectional diagrams and Figures 4 to 6 showing the specifications are all
1 is a perspective view of three types of wooden flooring materials for footwear according to embodiments of the present invention. 1... A veneer containing an insoluble non-combustible inorganic substance inside 3... A 5-ply plywood veneer 4... A veneer 9-ply plywood 5... Board 6... Electric heater panel 8
... Soaking board 9 ... Hot water vibrator 10 ... Inorganic board 11 ... Preservative plywood A, B ... Wooden heating flooring material C, D, E ... Wooden flooring material for shoes on feet

Claims (1)

[Scope of Claims] 1. A flooring material in which at least a portion exposed on the surface is made of wood, and the wood constituting at least the portion exposed on the surface of the wood portion is a modified wood containing an insoluble incombustible inorganic substance inside. A wooden flooring material featuring: 2 Modified wood containing an insoluble non-combustible inorganic substance inside is impregnated with one of a cation-containing treatment liquid and an anion-containing treatment liquid that produce the same insoluble non-combustible inorganic substance by mixing, and then impregnating the other. The wooden flooring material according to claim 1, which is obtained by fixing an insoluble, nonflammable inorganic substance inside the raw material wood.