JP2006028968A - Paulownia member for house - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent discoloration with the lapse of time of a paulownia member for a house. <P>SOLUTION: A floor material 10 on this embodiment is composed of a floor material body 1 as the paulownia member, and an impervious coating film 2 for covering its all exposed surfaces. A male tongue part 3 and a female tongue part 4 are respectively formed on respective end surfaces along an edge part in the longitudinal direction. While, soft removing processing, that is, a wood grain is applied to a surface 5 being the indoor side among a surface of the floor material body 1 for constituting the floor material 10. The impervious coating film 2 is properly and desirably selected from paint without producing a toxic substance, though what material is selected is optional if the coating film is impervious. For example, linseed oil having the mildew-proofing effect and being a natural raw material superior in water repellency and also a material of mixing the linseed oil and glycerin for further enhancing the water repellency, can be selected. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  TECHNICAL FIELD The present invention relates to a residential paulownia member mainly applied as residential wood.

  In wooden houses, laminated timber and plywood are used for various parts such as pillars and flooring from the viewpoint of material cost.

  However, in recent years, harmful substances such as formaldehyde contained in adhesives used to manufacture laminated timber and plywood have become a problem, and solid wood that does not use adhesives containing such harmful substances is used for housing. It attracts attention as a timber again.

JP2002-172603 JP 10-2097

  Common solid wood used as residential wood is cedar, camellia, zelkova, etc., but recently, paulownia has been reviewed. In other words, paulownia has been used almost only for furniture in the past, but it is easy to construct because of its low specific gravity, and has excellent heat insulation properties. Also, the stretch rate is 0.06%, which is very high compared to other wood. Because of its small size, it is also highly airtight.

  In addition, paulownia has the feature that it is very soft, and when paulownia is used as a flooring, it is hard to be injured even if it falls, so it can be used with peace of mind even in a home with elderly people.

  Furthermore, paulownia grows quickly, and the diameter is 30-40cm in 15-20 years, and cedar takes 80 years. Compared with timber, paulownia has a fast growth cycle in wood and can be repeatedly produced on flat ground. Therefore, it can be said that it is an environmentally friendly material without affecting the forest.

  However, paulownia is very white in color and has the disadvantage of discoloration to gray-black or blue-black over time. To use paulownia as residential wood, this discoloration is a complaint of residents. There is a big problem of becoming a target.

  The present invention has been made in consideration of the above-described circumstances, and an object thereof is to provide a residential paulownia member capable of preventing discoloration with time.

  In order to achieve the above object, a residential paulownia member according to the present invention is a residential paulownia member comprising a paulownia member and a water-shielding coating coated on all exposed surfaces thereof as described in claim 1. The residential paulownia member is a flooring material, an inner wall material or a ceiling material.

  In addition, the residential paulownia member according to the present invention, as described in claim 2, is a residential paulownia comprising a paulownia member whose surface is subjected to a soft removal treatment and a water-shielding coating coated on all exposed surfaces thereof. It is a member, and the paulownia member for housing is a flooring material, an inner wall material or a ceiling material.

  Further, the residential paulownia member according to the present invention comprises a paulownia member having a surface impregnated with a strongly acidic aqueous solution, and a water-shielding coating coated on all exposed surfaces of the paulownia member. A paulownia member, wherein the paulownia member for housing is a floor material, an inner wall material, or a ceiling material.

  In addition, the paulownia member for housing according to the present invention is formed on the paulownia member formed by softly removing the surface and impregnating the surface with a strongly acidic aqueous solution, and on all exposed surfaces thereof, as described in claim 4. A residential paulownia member comprising a water-impervious coating to be coated, wherein the residential paulownia member is a floor material, an inner wall material, or a ceiling material.

  Conventionally, when using a paulownia member as a residential wood, the paulownia member turns gray-black or blue-black over time, and this discoloration becomes a subject of complaints from residents. It was.

  In view of such problems, the present applicant focused on whether tannin contained in a large amount in paulownia is a cause of discoloration, and as a result of earnestly conducting numerous investigations, It has the property of forming a chelate compound by the reaction of the phenolic hydroxyl group and heavy metal ions. In particular, the reaction of the phenolic hydroxyl group with iron ions forms gray-black or blue-black chelate compounds called tannin iron. And it turned out that this tannin iron causes the discoloration of paulownia.

  In addition, when the paulownia is cut with an iron saw, or when the paulownia member is fastened to a joist or a stud using a steel screw or nail, the paulownia cut surface or screw Iron is mixed into the paulownia member from the hole or nail hole, and the iron and tannin contained in the paulownia react in the presence of water vapor sucked in by the humidity control of the paulownia. It is a new finding that iron is produced.

  In the paulownia member for houses which concerns on Claim 1, it is comprised from the paulownia member and the water-shielding film coat | covered on all the exposed surfaces.

  In this way, when the residential paulownia member according to the present invention is used as a flooring material, an inner wall material or a ceiling material, all exposed surfaces of the paulownia member are covered with a water-shielding film, so Water vapor from inside or ceiling pockets is not absorbed into the housing paulownia member. On the other hand, the reaction between tannin and iron, which is the cause of discoloration of paulownia, is naturally indispensable because of the chemical reaction, but in the present invention, as described above, the water-shielding film is formed on all exposed surfaces of the paulownia member. Covering.

  Therefore, even if iron is contained in the housing paulownia member due to various factors, the reaction between the tannin and the iron content does not occur as described above, thus preventing discoloration of the housing paulownia member. It becomes possible to do.

  The reason why iron is contained in the paulownia member for housing is not only when it is originally contained in the paulownia member, but also when cutting the paulownia with an iron saw as described above, or when the paulownia member is made of iron. When screws or nails are used to fasten to joists or studs, iron may be mixed into the paulownia member from the cut surfaces of paulownia, screw holes, or nail holes.

  By the way, paulownia has the property of easily absorbing water vapor, and when the indoor humidity is high such as summer, there is a tendency to absorb the moisture, but in the present invention, all exposed surfaces of the paulownia member Since the water-shielding coating is coated, there is no concern that water vapor enters the house paulownia member even when the humidity is high.

  Moreover, since all the exposed surfaces of the paulownia member are covered with a water-shielding coating, when the paulownia member for houses is used as a flooring material, an inner wall material or a ceiling material, it is possible to prevent the surface from being stained. Become.

  Any material can be selected for the water-proof coating as long as it has water-blocking properties, but it is desirable that the material be appropriately selected from paints that do not emit harmful substances. For example, linseed oil, which is a natural material having an antifungal effect and excellent in water repellency, or a mixture of linseed oil and glycerin to further improve water repellency can be selected.

  Moreover, in the residential paulownia member which concerns on Claim 2, it comprises from the paulownia member formed by carrying out the soft removal process of the surface, and the water-shielding film coat | covered on all the exposed surfaces.

  In this way, when the residential paulownia member according to the present invention is used as a flooring material, an inner wall material or a ceiling material, all exposed surfaces of the paulownia member are covered with a water-shielding film, so Water vapor from inside or ceiling pockets is not absorbed into the housing paulownia member. On the other hand, the reaction between tannin and iron, which is the cause of discoloration of paulownia, is naturally indispensable because of the chemical reaction, but in the present invention, as described above, the water-shielding film is formed on all exposed surfaces of the paulownia member. Covering.

  Therefore, even if iron is contained in the housing paulownia member due to various factors, the reaction between the tannin and the iron content does not occur as described above, thus preventing discoloration of the housing paulownia member. It becomes possible to do.

  The reason why iron is contained in the house paulownia member and the effect of the present invention when the room humidity is high, such as in summer, and the prevention of surface contamination are the same as in claim 1; Although omitted, in the residential paulownia member according to the present invention, the surface of the paulownia member constituting the residential paulownia member has been subjected to soft removal treatment, so-called tingling, so that the surface has an appropriate hardness. .

  Therefore, when the residential paulownia member is used as a flooring material, an inner wall material, or a ceiling material, the surface which becomes the indoor side is not easily damaged. Thus, in the present invention, the effect described in claim 1 is achieved. In addition, there is an effect that it is possible to prevent the surface of the paulownia member from being damaged.

  Here, it is not necessary to perform the soft removal treatment on all surfaces of the paulownia member, and when the paulownia member for houses is used as a flooring material, an inner wall material or a ceiling material, at least the surface on the indoor side is subjected to the soft removal treatment. Just give it.

  Since the description regarding the water-impervious coating is the same as in claim 1, the description thereof is omitted here.

  In addition, the residential paulownia member according to claim 3 is composed of a paulownia member having a surface impregnated with a strong acidic aqueous solution, and a water-shielding coating coated on all exposed surfaces thereof.

  In this case, when the residential paulownia member according to the present invention is used as a flooring material, an inner wall material or a ceiling material, all exposed surfaces of the paulownia member are covered with a water-shielding film. Similarly to the second aspect, water vapor in the room, in the cross section of the wall, or in the ceiling is not absorbed into the paulownia member for housing. On the other hand, the reaction between tannin and iron, which is the cause of discoloration of paulownia, is naturally indispensable because of the chemical reaction, but in the present invention, as described above, the water-shielding film is formed on all exposed surfaces of the paulownia member. Covering.

  Therefore, even if iron is contained in the housing paulownia member due to various factors, the reaction between the tannin and the iron content does not occur as described above, thus preventing discoloration of the housing paulownia member. It becomes possible to do.

  Since the action of the present invention and the prevention of soiling of the surface when the indoor humidity is high, such as the cause of iron contained in the house paulownia member or summer, are the same as in claims 1 and 2, here In the housing paulownia member according to the present invention, since the description is omitted, since the surface of the paulownia member constituting the housing paulownia member is impregnated with a strong acidic aqueous solution, the pH in the housing paulownia member is A strong acid will be exhibited, and the chemical reaction between tannin and iron ions contained in the paulownia member will be less likely to occur.

  Therefore, it is possible to prevent tannin discoloration more reliably.

  Since the description regarding the water-impervious coating is the same as in claims 1 and 2, the description thereof is omitted here.

  About a strongly acidic aqueous solution, what has pH 1-2 may be selected suitably, for example, there exists oxalic acid aqueous solution.

  Further, in the residential paulownia member according to claim 4, the paulownia member formed by softly removing the surface and impregnating the surface with a strongly acidic aqueous solution, and the water-impervious coating coated on all exposed surfaces thereof It is composed of.

  In this case, when the residential paulownia member according to the present invention is used as a flooring material, an inner wall material, or a ceiling material, since all the exposed surfaces of the paulownia member are covered with a water-shielding film, the claims 1 to Similarly to the third aspect, water vapor in the room, in the cross section of the wall, or in the ceiling is not absorbed into the paulownia member for housing. On the other hand, the reaction between tannin and iron, which is the cause of discoloration of paulownia, is naturally indispensable because of the chemical reaction, but in the present invention, as described above, the water-shielding film is formed on all exposed surfaces of the paulownia member. Covering.

  Therefore, even if iron is contained in the housing paulownia member due to various factors, the reaction between the tannin and the iron content does not occur as described above, thus preventing discoloration of the housing paulownia member. It becomes possible to do.

  The reason why iron is contained in the house paulownia member and the effect of the present invention when the room humidity is high such as in summer and the prevention of surface contamination are the same as in claims 1 to 3, so here However, in the housing paulownia member according to the present invention, the surface of the paulownia member constituting the housing paulownia member is subjected to soft removal treatment, so-called tingling, so that the surface is moderate. Has hardness.

  Therefore, when the residential paulownia member is used as a flooring material, an inner wall material or a ceiling material, the surface which is on the indoor side is not easily damaged as in the case of Claim 2, and thus in the present invention, the claim 1 is provided. In addition to the function and effect described above, there is also an effect that the surface of the paulownia member can be prevented from being damaged.

  Here, it is not necessary to perform the soft removal treatment on all surfaces of the paulownia member, and when the paulownia member for houses is used as a flooring material, an inner wall material or a ceiling material, at least the surface on the indoor side is subjected to the soft removal treatment. Just give it.

  Further, in the housing paulownia member according to the present invention, as described in claim 3, since the surface of the paulownia member constituting the housing paulownia member is impregnated with a strong acidic aqueous solution, The pH of the material exhibits a strong acid, and a chemical reaction between tannin and iron ions contained in the paulownia member is less likely to occur.

  Therefore, it is possible to prevent tannin discoloration more reliably.

  Since the description regarding the water-impervious coating is the same as in claims 1 to 3, the description thereof is omitted here.

  About strongly acidic aqueous solution, what is necessary is just to select the thing of pH 1-2 similarly to Claim 3, for example, there exists oxalic acid aqueous solution.

  Hereinafter, embodiments of a residential paulownia member according to the present invention will be described with reference to the accompanying drawings. Note that components that are substantially the same as those of the prior art are assigned the same reference numerals, and descriptions thereof are omitted.

  Fig.1 (a) and FIG.1 (b) are the perspective views and sectional drawings which showed the flooring 10 as a paulownia member for houses concerning this embodiment.

  As can be seen from these drawings, the flooring 10 according to this embodiment is composed of a flooring main body 1 as a paulownia member and a water-shielding coating 2 covered on all exposed surfaces thereof.

  The flooring 10 has a male part 3 and a female part 4 formed on each end face along the edge in the longitudinal direction.

  As can be seen in FIG. 2B, the water barrier coating 2 constituting the flooring 10 is coated on all exposed surfaces of the flooring main body 1, but the thickness thereof is in the flooring main body 1. Adjust appropriately so that moisture does not enter.

  Any material can be selected for the water-shielding coating 2 as long as it has water-blocking properties, but it is desirable to select appropriately from paints that do not emit harmful substances. For example, linseed oil, which is a natural material that has an antifungal effect and is excellent in water barrier properties, or a mixture of linseed oil and glycerin to further improve water barrier properties can be selected.

  On the other hand, among the surfaces of the floor material main body 1 constituting the floor material 10, the surface 5 which is the indoor side is subjected to a soft removal process, so-called vortex.

  Here, Uzukuri is a technique that has been used in the past to make the beautiful texture with the three-dimensional feeling inherent in wood stand out. This is a technique for creating irregularities.

  In order to apply squeezing, a soft layer existing on the surface of the flooring main body 1, that is, a soft and hollow layer may be scraped off with a wire brush or the like to obtain a grain. If it does in this way, the surface 5 of the flooring main body 1 will become moderate hardness.

  FIG. 2 is a plan view of a state in which the flooring 10 according to the present embodiment has been constructed. As can be seen from the figure, when the flooring 10 according to the present embodiment is constructed, a plurality of joists 12 are respectively bridged on the upper surfaces of the beams 13a and 13b whose ends are joined to the columns 11a and 11b, respectively. Then, a plurality of flooring materials 10 are spread so as to be orthogonal to the joists 12.

  Here, in laying the flooring 10 on the upper surface of the joist 12, according to the conventional method, the flooring 10 is applied to the joist 12 so that the female part 4 is fitted into the male part 3 of the flooring 10 on which the female part 4 has been laid in advance. After laying, after that, a nail is driven in an oblique direction from the root of the male part 3 of the floor material 10 that has been newly laid and fixed to the joist 12, and then the same procedure may be repeated.

  In addition, when joining the flooring 10 to the joist 12, as described above, nails are driven into the male part 3 at a driving angle of 50 to 60 degrees. However, the water-impervious coating is applied to all surfaces of the flooring 10 according to the present embodiment. 2 is coated, there is no problem even if iron is mixed into the flooring material 10 from the iron nails that are driven into the flooring material when the flooring material 10 is applied.

  In the flooring 10 according to the present embodiment, all the exposed surfaces of the flooring main body 1 are covered with the water shielding coating 2.

  If it does in this way, it will not be absorbed in the flooring 10 from the room | chamber interior or under the floor whether it is a liquid form or a water vapor | steam form.

  Further, the surface 5 of the flooring main body 1 has been subjected to a soft removal process in advance.

  Therefore, the surface 5 has moderate hardness.

  As described above, according to the flooring 10 according to the present embodiment, since all the exposed surfaces of the flooring main body 1 are covered with the water-impervious coating 2, moisture is contained in the flooring 10. Will not be absorbed, and the chemical reaction in the flooring 10 will be suppressed or prevented.

  Therefore, when the iron is originally contained in the paulownia, when the paulownia is cut with an iron saw, or when the flooring 10 is fastened to the joist 12 using the iron screws or nails, Even if iron is mixed into the flooring 10 from the cut surface, screw holes, or nail holes, the chemical reaction of tannin and iron does not occur as described above. Discoloration can be prevented.

  In addition, after the flooring 10 is constructed, there is an effect of preventing the surface 5 on the indoor side from being contaminated.

  Moreover, according to the flooring 10 according to the present embodiment, the soft-removal process is performed on the surface of the flooring main body 1 constituting the flooring in advance, so that the indoor side surface 5 of the flooring main body 1 is moderate. It will have hardness.

  Therefore, when the flooring 10 is constructed so that the surface 5 subjected to the soft removal treatment is on the indoor side, it is possible to prevent the surface 5 from being damaged.

  In the present embodiment, the soft removal process is performed on the surface 5 on the indoor side of the surface of the flooring main body 1. However, when there is no possibility that the surface of the flooring 10 is damaged, the soft removal process is performed. May be omitted, and the water-proof coating 2 may be directly coated on the flooring main body 1. Even in such a configuration, there is no change in exhibiting the above-described discoloration preventing effect based on the water-blocking action of the water-blocking coating 2.

  In the present embodiment, since the purpose is to prevent damage to the surface of the flooring 10, the surface 5 of the flooring main body 1 is subjected to the soft removal treatment on the surface 5 on the indoor side as described above. If it is desired to emphasize the softness inherent to the flooring 10 that is a residential paulownia member, the soft removal process may be omitted.

  Although not particularly mentioned in this embodiment, under strong acidity, a chemical reaction between tannin and iron ions contained in the paulownia member is less likely to occur, so that the residential paulownia member according to the present invention is on the surface. You may make it comprise the paulownia member made to impregnate the strong acidic aqueous solution, and the water-shielding film coat | covered on all the exposed surfaces.

  In addition, the paulownia member for housing according to the present invention is a paulownia member obtained by softening the surface and impregnating the surface with a strongly acidic aqueous solution, and a water-impervious coating coated on all exposed surfaces thereof You may make it comprise. In such a configuration, the reaction between tannin and iron ions is suppressed by lowering the pH, but since the details have already been described, the following description is omitted here.

  About a strongly acidic aqueous solution, what has pH 1-2 may be selected suitably, for example, there exists oxalic acid aqueous solution.

  In the above-described embodiment and modification, the residential paulownia member is used as a flooring material. However, instead of this, it may be used as an inner wall material or a ceiling material. Even in such a configuration, the same effects as the above-described flooring can be obtained, and in addition to this, the inner wall material and the ceiling material can be reliably prevented from being discolored against the condensation occurring on the wall section and the condensation on the ceiling wall. Is possible.

It is the figure which showed the flooring 10 which concerns on this embodiment, (a) is the perspective view, (b) is sectional drawing. Sectional drawing which showed the state which constructed the flooring 10 which concerns on this embodiment.

Explanation of symbols

1 Floor material (paulownia materials)
2 Water-impervious coating 5 Surface 10 Floor material (paulownia member for housing)

Claims (4)

A residential paulownia member comprising a paulownia member and a water-impervious coating coated on all exposed surfaces thereof, wherein the residential paulownia member is a flooring material, an inner wall material, or a ceiling material. Paulownia material. A paulownia member for housing composed of a paulownia member formed by removing the surface softly and a water-impervious coating coated on all exposed surfaces of the paulownia member for flooring, inner wall material or ceiling material. A paulownia member for housing, characterized by: A residential paulownia member comprising a paulownia member impregnated with a strongly acidic aqueous solution on the surface and a water-impervious coating coated on all exposed surfaces thereof, wherein the residential paulownia member is a floor material, an inner wall material, or a ceiling A paulownia member for housing, characterized by being made of wood. A housing paulownia member comprising a paulownia member formed by softly removing the surface and impregnating the surface with a strongly acidic aqueous solution, and a water barrier coating coated on all exposed surfaces of the paulownia member. A paulownia member for housing, wherein the paulownia member is a flooring material, an inner wall material or a ceiling material.

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