JP5524818B2

JP5524818B2 - Woody synthetic building material and manufacturing method thereof

Info

Publication number: JP5524818B2
Application number: JP2010282003A
Authority: JP
Inventors: 正行上手
Original assignee: Handy Techno Co Ltd
Current assignee: Handy Techno Co Ltd
Priority date: 2010-12-17
Filing date: 2010-12-17
Publication date: 2014-06-18
Anticipated expiration: 2030-12-17
Also published as: JP2012126102A

Description

本発明は、建築物のデッキ、テラス、フェンス、手摺り、柱、ルーバー、ベンチなどに使用される建築資材のうち、特に、建築建材系廃材等を利用した木粉と熱可塑性樹脂との混合材を原料として成形される木質合成建材、及び、その製造方法に関する。 Of the building materials used for building decks, terraces, fences, handrails, pillars, louvers, benches, etc., the present invention is particularly a mixture of wood powder and thermoplastic resin utilizing building materials waste materials, etc. The present invention relates to a woody synthetic building material formed from a material as a raw material and a method for producing the same.

従来、建築資材としては、木材などの天然の材料が主流であったが、最近では、建築廃材等を利用した木粉と熱可塑性樹脂とを混合して成形した建築用の木質合成建材が知られるようになり、デッキ材等のエクステリア建材や、内装造作材等のインテリア建材として使用されるようになっている。 Conventionally, natural materials such as wood have been the mainstream as building materials, but recently, wood-based synthetic building materials for building formed by mixing wood powder using building waste materials and thermoplastic resin are known. It is used as exterior building materials such as deck materials and interior building materials such as interior construction materials.

特開２００６−１９２７４１号公報JP 2006-192741 A 特開２００６−３０５９８１号公報JP 2006-305981 A 特開２００３−３６６０号公報Japanese Patent Laid-Open No. 2003-3660 特開２００２−１８７１１６号公報JP 2002-187116 A 特開平９−２１６５００号公報JP-A-9-216500

上記特許文献等に記載されている木質合成建材の製造方法によれば、木粉の色と原料樹脂の色との混合した色調と、凹状谷部の切削の強さ加減が調整された結果表出する豊かな原料樹脂層の色調とが対照的に表現されて、木質感のある合成建材を製造することができる。しかしながら、依然として人工的な雰囲気が残存しており、より天然木材の風合いを有する木質合成建材の実現が望まれる。 According to the method for producing a woody synthetic building material described in the above-mentioned patent documents, etc., a result table in which the color tone mixed with the color of the wood powder and the color of the raw material resin and the cutting strength adjustment of the concave valley portion are adjusted. By contrasting with the rich color tone of the raw material resin layer, a synthetic building material with a wood texture can be manufactured. However, an artificial atmosphere still remains, and realization of a woody synthetic building material having a texture of natural wood is desired.

本発明は、上記のような課題を解決すべくなされたものであって、より天然木材に近い風合いを有する木質合成建材、及び、その製造方法を提供することを目的とする。 The present invention has been made to solve the above-described problems, and an object thereof is to provide a wooden synthetic building material having a texture closer to that of natural wood and a method for producing the same.

本発明の木質合成建材は、熱可塑性合成樹脂と、木粉と、副原料と、を混合した原料樹脂を型から押し出して、又は、型内に流し込み或いは射出して成形した木質合成建材であって、表側面には、長手方向に延在する多数の凸条、及び、凹条が形成され、凸条の頂部と当該凸条に隣接する凹条の最深部との間に、表側面に対する傾斜角度が１０〜４５°の範囲内のいずれかの角度に設定された緩傾斜部、又は、表側面に対する傾斜角度が４６〜９０°の範囲内のいずれかの角度に設定された急傾斜部が形成され、一つの表側面に形成されているすべての凸条のうち３０％以上の凸条において、その頂部の両側に緩傾斜部と急傾斜部とが一つずつ形成されることにより、頂部の中心を基準とする左右の形状が非対称的な形状となっていることを特徴としている。 The woody synthetic building material of the present invention is a woody synthetic building material formed by extruding a raw material resin, which is a mixture of thermoplastic synthetic resin, wood powder, and auxiliary materials, from a mold, or by pouring or injecting it into a mold. In the front side surface, a large number of ridges and recesses extending in the longitudinal direction are formed, and between the top of the ridge and the deepest part of the recess adjacent to the ridge, Slowly inclined portion whose inclination angle is set to any angle within the range of 10 to 45 °, or steeply inclined portion whose inclination angle to the front side is set to any angle within the range of 46 to 90 ° In the ridges of 30% or more of all the ridges formed on one front side, one gentle slope and one steep slope are formed on both sides of the top, The left and right shapes with respect to the center of the top are asymmetrical. It is a sign.

尚、一つの表側面に形成されているすべての凹条のうち３０％以上の凹条において、その最深部の両側に緩傾斜部と急傾斜部とが一つずつ形成されることにより、最深部を基準とする左右の形状が非対称的な形状となっていることが好ましく、また、緩傾斜部については１０〜４５°の範囲で、また、急傾斜部については４６〜９０°の範囲で、それぞれ傾斜角度について複数のバリエーションが設定され、それらが横幅方向について不規則に配置されていることが好ましい。 In addition, 30% or more of all the grooves formed on one front side surface are formed with one gentle slope part and one steep slope part on both sides of the deepest part. It is preferable that the left and right shapes with respect to the part are asymmetrical, and the gentle slope part is in the range of 10 to 45 °, and the steep slope part is in the range of 46 to 90 °. It is preferable that a plurality of variations are set for the respective inclination angles, and they are irregularly arranged in the lateral width direction.

更に、隣接する二つの凸条の頂部間の間隔寸法について、２〜１０ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凸条の頂部の幅寸法について、０．５〜５ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凸条の頂部から凹条の最深部までの深さ寸法について、０．５〜２．５ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凹条の最深部を中心とする凹状の湾曲面の曲率について、複数のバリエーションが設定され、それらが横幅方向について不規則に配置されていることが好ましい。 Further, a plurality of variations are set in the range of 2 to 10 mm with respect to the distance between the tops of two adjacent ridges, and they are irregularly arranged in the lateral width direction. A plurality of variations are set in the range of 5 to 5 mm, they are irregularly arranged in the width direction, and the depth dimension from the top of the ridge to the deepest part of the ridge is 0.5 to 2.5 mm. Multiple variations are set in the range, they are arranged irregularly in the width direction, and multiple variations are set for the curvature of the concave curved surface centering on the deepest part of the groove, and they are not in the width direction. It is preferable that they are arranged in a rule.

また、本発明の木質合成建材は、熱可塑性合成樹脂と、木粉と、副原料と、を混合した原料樹脂を型から押し出して、又は、型内に流し込み或いは射出して成形した木質合成建材であって、表側面には、長手方向に延在する多数の凸条、及び、凹条が形成され、一つの表側面に形成されているすべての凸条のうち３０％以上の凸条において、凸条の頂部と当該凸条に隣接する凹条の最深部との間に湾曲面のみが形成され、湾曲面の曲率について複数のバリエーションが設定され、それらが不規則に配置され、一つの表側面に形成されているすべての凸条のうち３０％以上の凸条において、その頂部の中心を基準とする左右の形状が非対称的な形状となっていることを特徴としている。 The woody synthetic building material of the present invention is a woody synthetic building material formed by extruding a raw material resin, which is a mixture of thermoplastic synthetic resin, wood powder, and auxiliary materials, from a mold, or by pouring or injecting into a mold. In the front side surface, a large number of ridges and recesses extending in the longitudinal direction are formed, and in all the ridges formed on one front side surface, 30% or more of the ridges Only the curved surface is formed between the top of the ridge and the deepest portion of the groove adjacent to the ridge, a plurality of variations are set for the curvature of the curved surface, and they are arranged irregularly, Of all the ridges formed on the front side, 30% or more of the ridges are characterized in that the left and right shapes based on the center of the top are asymmetrical.

本発明の木質合成建材の製造方法は、熱可塑性合成樹脂と、木粉と、副原料と、を混合した原料樹脂を、表側面に多数の凸条、及び、凹条が形成されるような型から押し出して、又は、そのような型内に流し込み或いは射出して基板を成型し、その後、基板の表側面に形成された多数の凸条、及び、凹条のうち、各凸条の先端部分を、一定の基準線に沿って除去する研削工程を実行することによって木質合成建材を製造する方法において、基板の成型に際し、長手方向に延在する多数の凸条、及び、凹条が表側面に形成され、凸条と当該凸条に隣接する凹条の最深部との間に、表側面に対する傾斜角度が１０〜４５°の範囲内のいずれかの角度に設定された緩傾斜部、又は、表側面に対する傾斜角度が４６〜９０°の範囲内のいずれかの角度に設定された急傾斜部のいずれか一方が形成され、一つの表側面に形成されるすべての凸条のうち３０％以上の凸条において、その頂部の両側に緩傾斜部と急傾斜部とが一つずつ形成されることにより、頂部の中心を基準とする左右の形状が非対称的な形状となるような型を用いることを特徴としている。 In the method for producing a woody synthetic building material of the present invention, a raw material resin in which a thermoplastic synthetic resin, wood powder, and auxiliary materials are mixed, a large number of ridges and ridges are formed on the front side surface. Extruded from the mold, or cast or injected into such a mold to mold the substrate, and then, among the numerous ridges and ridges formed on the front side of the substrate, the tip of each ridge In the method of manufacturing a wooden synthetic building material by performing a grinding process for removing a portion along a certain reference line, a large number of ridges and ridges extending in the longitudinal direction appear when molding a substrate. A gently inclined portion that is formed on the side surface and has an inclination angle with respect to the front side surface set to any angle within a range of 10 to 45 ° between the protruding item and the deepest portion of the protruding item adjacent to the protruding item. Or, the angle of inclination with respect to the front side is any angle within the range of 46 to 90 ° Either one of the set steep slopes is formed, and 30% or more of all the ridges formed on one front side face have a gentle slope part and a steep slope part on both sides of the top part. It is characterized by using a mold that is formed one by one so that the left and right shapes with respect to the center of the top are asymmetrical.

尚、基板の成型に際し、一つの表側面に形成されるすべての凹条のうち３０％以上の凹条において、その最深部の両側に緩傾斜部と急傾斜部とが一つずつ形成されることにより、最深部を基準とする左右の形状が非対称的な形状となるような型を用いることが好ましく、緩傾斜部については１０〜４５°の範囲で、また、急傾斜部については４６〜９０°の範囲で、それぞれ傾斜角度について複数のバリエーションが設定され、それらが横幅方向について不規則に配置されるような型を用いることが好ましい。 When molding the substrate, 30% or more of all the grooves formed on one front side are formed with one gentle slope and one steep slope on both sides of the deepest part. Accordingly, it is preferable to use a mold in which the left and right shapes with respect to the deepest portion are asymmetrical shapes, in the range of 10 to 45 ° for the gently inclined portion, and 46 to about the steeply inclined portion. It is preferable to use a mold in which a plurality of variations are set for the respective inclination angles within a range of 90 °, and they are irregularly arranged in the width direction.

更に、隣接する二つの凸条の頂部間の間隔寸法について、２〜１０ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凸条の頂部の幅寸法について、０．５〜５ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凸条の頂部から凹条の最深部までの深さ寸法について、０．５〜２．５ｍｍの範囲で複数のバリエーションが設定され、それらが横幅方向について不規則に配置され、凹条の最深部を中心とする凹状の湾曲面の曲率について、複数のバリエーションが設定され、それらが横幅方向について不規則に配置されるような型を用いることが好ましい。 Further, a plurality of variations are set in the range of 2 to 10 mm with respect to the distance between the tops of two adjacent ridges, and they are irregularly arranged in the lateral width direction. A plurality of variations are set in the range of 5 to 5 mm, they are irregularly arranged in the width direction, and the depth dimension from the top of the ridge to the deepest part of the ridge is 0.5 to 2.5 mm. Multiple variations are set in the range, they are arranged irregularly in the width direction, and multiple variations are set for the curvature of the concave curved surface centering on the deepest part of the groove, and they are not in the width direction. It is preferable to use a mold that is arranged in a rule.

また、本発明の木質合成建材の製造方法は、熱可塑性合成樹脂と、木粉と、副原料と、を混合した原料樹脂を、表側面に多数の凸条、及び、凹条が形成されるような型から押し出して、又は、そのような型内に流し込み或いは射出して基板を成型し、その後、基板の表側面に形成された多数の凸条、及び、凹条のうち、各凸条の先端部分を、一定の基準線に沿って除去する研削工程を実行することによって木質合成建材を製造する方法において、基板の成型に際し、長手方向に延在する多数の凸条、及び、凹条が表側面に形成され、一つの表側面に形成されているすべての凸条のうち３０％以上の凸条において、凸条と当該凸条に隣接する凹条の最深部との間に、湾曲面のみが形成され、湾曲面の曲率について複数のバリエーションが設定され、それらが不規則に配置され、一つの表側面に形成されているすべての凸条のうち３０％以上の凸条において、その頂部の中心を基準とする左右の形状が非対称的な形状となるような型を用いることを特徴としている。 In the method for producing a woody synthetic building material of the present invention, a raw material resin in which a thermoplastic synthetic resin, wood powder, and auxiliary materials are mixed is formed with a large number of ridges and ridges on the front side. Extruded from such a mold, or cast or injected into such a mold to mold a substrate, and then each of the plurality of ridges and ridges formed on the front side of the substrate. In the method of manufacturing a wood composite building material by executing a grinding process for removing the tip portion of the substrate along a certain reference line, a large number of ridges and ridges extending in the longitudinal direction when the substrate is molded Is formed on the front side, and in 30% or more of the ridges formed on one front side, the curve is between the ridge and the deepest part of the ridge adjacent to the ridge. Only the surface is formed, and multiple variations are set for the curvature of the curved surface. , They are irregularly arranged, and in 30% or more of the ridges formed on one front side, the left and right shapes with respect to the center of the top are asymmetrical It is characterized by using such a mold.

本発明の木質合成建材においては、表側面に凹条、緩傾斜部、及び、急傾斜部が形成されることにより、異なる色調（光沢があり、視線角度によって多彩に変化する色調）と、凸条の頂部における光沢のない色調が、対照的に表れるようになっており、その結果、表側面を木質感のある平面とすることができ、更に、二つの凸条５の間、或いは、二つの凹条の間に、比較的角度が緩やかな緩傾斜部と、それらよりも角度がきつい急傾斜部と、二種類の傾斜部が一つずつ組み合わされて配置され、その結果、凸条及び凹条は、頂部の中心或いは最深部を基準として左右が非対称的な形状となっているため、従来の木質合成建材と比較して、より天然木材に近い風合いを有する表側面とすることができる。 In the woody synthetic building material of the present invention, a concave color, a gently inclined part, and a steeply inclined part are formed on the front side surface, so that different color tones (color tone that has gloss and changes variously depending on the viewing angle) and convexity The matte color tone at the top of the strip appears in contrast, and as a result, the front side surface can be a plane with a wood texture, and between the two ridges 5 or two Between the two ridges, a moderately inclined portion with a relatively gentle angle, a steeply inclined portion with a tighter angle than them, and two types of inclined portions are arranged one by one. Since the concave stripe has an asymmetric shape on the left and right with respect to the center or deepest part of the top, it can be a front side having a texture closer to that of natural wood compared to conventional wood synthetic building materials. .

図１は、本発明の第一実施形態に係る木質合成建材１の斜視図である。FIG. 1 is a perspective view of a wooden synthetic building material 1 according to a first embodiment of the present invention. 図２は、図１の木質合成建材１の端面２の部分拡大図である。FIG. 2 is a partially enlarged view of the end surface 2 of the woody synthetic building material 1 of FIG. 図３は、図１の木質合成建材１の端面２の部分拡大図である。FIG. 3 is a partially enlarged view of the end face 2 of the woody synthetic building material 1 of FIG. 図４は、本発明の第二実施形態に係る木質合成建材１の製造方法の説明図であり、成形後における基板１１の形状の一例を示す部分拡大図である。FIG. 4 is an explanatory view of the method for manufacturing the wooden synthetic building material 1 according to the second embodiment of the present invention, and is a partially enlarged view showing an example of the shape of the substrate 11 after molding. 図５は、本発明の第二実施形態に係る木質合成建材１の製造方法の説明図であり、成形後における基板１１の形状の一例を示す部分拡大図である。FIG. 5 is an explanatory view of the method for manufacturing the wooden synthetic building material 1 according to the second embodiment of the present invention, and is a partially enlarged view showing an example of the shape of the substrate 11 after molding. 図６は、本発明の第二実施形態に係る木質合成建材１の製造方法の説明図であり、基板１１の表面に形成される凸条５の断面図である。FIG. 6 is an explanatory view of the method for manufacturing the wooden synthetic building material 1 according to the second embodiment of the present invention, and is a cross-sectional view of the ridge 5 formed on the surface of the substrate 11. 図７は、本発明の第二実施形態に係る木質合成建材１の製造方法の説明図であり、基板１１の表面に形成される凸条５の断面図である。FIG. 7 is an explanatory view of the method for manufacturing the wooden synthetic building material 1 according to the second embodiment of the present invention, and is a cross-sectional view of the ridge 5 formed on the surface of the substrate 11. 図８は、本発明の第二実施形態に係る木質合成建材１の製造方法の説明図であり、基板１１の表面に形成される凸条５の断面図である。FIG. 8 is an explanatory view of the method for manufacturing the wooden synthetic building material 1 according to the second embodiment of the present invention, and is a cross-sectional view of the ridge 5 formed on the surface of the substrate 11. 図９は、本発明の第三実施形態に係る木質合成建材１の端面２の部分拡大図である。FIG. 9 is a partially enlarged view of the end surface 2 of the wood composite building material 1 according to the third embodiment of the present invention. 図１０は、本発明に係る木質合成建材１の他の構成例を示す斜視図である。FIG. 10 is a perspective view showing another configuration example of the synthetic wood building material 1 according to the present invention.

以下、本発明「木質合成建材」と「木質合成建材の製造方法」の実施形態（第一〜三実施形態）についてそれぞれ説明する。図１は、本発明の第一実施形態に係る木質合成建材１の斜視図である。この木質合成建材１は、原料樹脂を型から押し出して成形したものであり、原料樹脂として、再生熱可塑性合成樹脂又はＰＶＣを含む一般熱可塑性合成樹脂を４５（４０〜６０）重量％、建築建材系廃材等の木材を粉砕して得た２００〜３００μｍ程度、或いは、それ以下の大きさの木粉を４０（３０〜５０）重量％、及び、副原料（カルシウムステイン、ポリエチレンワックス、炭カル、タルク、流動パラフィン、或いは、グリセリン等の相溶化剤、及び、成型性改良剤、並びに、顔料等）を１５（１０〜２０）重量％混合したものが使用されている。 Hereinafter, embodiments (first to third embodiments) of the present invention “woody synthetic building material” and “woody synthetic building material manufacturing method” will be described respectively. FIG. 1 is a perspective view of a wooden synthetic building material 1 according to a first embodiment of the present invention. This woody synthetic building material 1 is formed by extruding a raw material resin from a mold. As a raw material resin, 45 (40-60)% by weight of a general thermoplastic synthetic resin including recycled thermoplastic synthetic resin or PVC, and building material 40 (30-50)% by weight of wood powder with a size of about 200 to 300 μm obtained by pulverizing wood such as system waste materials or less, and auxiliary materials (calcium stain, polyethylene wax, charcoal, A mixture of 15 (10 to 20) wt% of a compatibilizer such as talc, liquid paraffin, or glycerin, a moldability improver, and a pigment is used.

本実施形態の木質合成建材１は、幅１４．５ｃｍ、厚さ２．５ｃｍ、長さ９０ｃｍに設定されているが、大きさについては特に限定されず、用途に合わせて適宜の寸法に設定することができる。 The woody synthetic building material 1 of the present embodiment is set to a width of 14.5 cm, a thickness of 2.5 cm, and a length of 90 cm, but the size is not particularly limited, and is set to an appropriate size according to the application. be able to.

上述の通りこの木質合成建材１は、押出成形法によって成形されているため、長手方向と直交する断面の形状は、長手方向について一定であり、長手方向両端の各端面２と同一の形状となる。そして、図１に示すように、内部には、複数の中空部３（大中空部３ａ、及び、小中空部３ｂ）が形成されている。これらの中空部３は、図１に示す端面２から反対側の端面（図示せず）までそれぞれ貫通しており、木質合成建材１の横幅方向へ所定の間隔（均等な間隔、或いは、不均等な間隔）を置いて平行に配列されている。 Since the wood composite building material 1 is formed by the extrusion molding method as described above, the shape of the cross section orthogonal to the longitudinal direction is constant in the longitudinal direction and is the same shape as each end face 2 at both ends in the longitudinal direction. . As shown in FIG. 1, a plurality of hollow portions 3 (a large hollow portion 3a and a small hollow portion 3b) are formed inside. These hollow portions 3 penetrate from the end surface 2 shown in FIG. 1 to the opposite end surface (not shown), respectively, and have a predetermined interval (equal interval or non-uniform interval) in the lateral width direction of the wooden synthetic building material 1. Are arranged in parallel at a certain interval.

中空部３は、木質合成建材１の強度を低下させることなく、軽量化を図ることができ、成型品の歩留まりを向上させることができる。また、この木質合成建材１を根太材等に対して固定する際、小中空部３ｂにネジを挿入することにより、表面側から裏面側までネジを容易に貫通させることができ、根太材等に対してネジを好適に締め付けることができる。 The hollow portion 3 can reduce the weight without reducing the strength of the wooden synthetic building material 1 and can improve the yield of the molded product. Moreover, when this wooden synthetic building material 1 is fixed to a joist or the like, the screw can be easily penetrated from the front surface side to the rear surface side by inserting a screw into the small hollow portion 3b. On the other hand, the screw can be suitably tightened.

図示されているように、この木質合成建材１の表側面４には、長手方向に延在する多数の凸条５、及び、凹条６が形成されている。これらの凸条５、及び、凹条６はいずれも平行で、長手方向と直交する断面に表れる表側面４の凹凸形状は、長手方向について一定であり、長手方向両端の各端面２に表れる表側面４の凹凸形状と同一の或いは対称的な形状となる。 As shown in the drawing, a large number of ridges 5 and ridges 6 extending in the longitudinal direction are formed on the front side surface 4 of the wooden synthetic building material 1. The ridges 5 and the ridges 6 are both parallel, and the concavo-convex shape of the front side surface 4 appearing in the cross section orthogonal to the longitudinal direction is constant in the longitudinal direction, and appears on each end face 2 at both ends in the longitudinal direction. It becomes the same or symmetrical shape as the uneven shape of the side surface 4.

但し、端面２、及び、長手方向と直交する断面に表れる表側面４の凹凸形状は、隣接する二つの凸条５の頂部間の間隔、凸条５の頂部の幅、凹条６の最深部の深さ（凸条５の頂部から凹条６の最深部までの深さ）、傾斜部の角度、湾曲面の曲率等が、横幅方向について不規則に配置される構成となっている。 However, the concavo-convex shape of the end surface 2 and the front side surface 4 appearing in the cross section orthogonal to the longitudinal direction is the distance between the tops of the adjacent two ridges 5, the width of the tops of the ridges 5, and the deepest part of the ridges 6. The depth (the depth from the top of the ridge 5 to the deepest portion of the ridge 6), the angle of the inclined portion, the curvature of the curved surface, and the like are irregularly arranged in the lateral width direction.

より具体的には、図２（図１の木質合成建材１の端面２の部分拡大図）に示すように、凸条５の頂部７ｂと、これに隣接する凸条５の頂部７ｃとの間隔寸法Ｗ１が３．７ｍｍとなっているのに対し、凸条５の頂部７ｃと、これに隣接する凸条５の頂部７ｄとの間隔寸法Ｗ２は２．８ｍｍとなっている。本実施形態においては、隣接する二つの凸条５の頂部７間の間隔寸法が一定ではなく、２〜１０ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。 More specifically, as shown in FIG. 2 (partial enlarged view of the end surface 2 of the woody synthetic building material 1 in FIG. 1), the distance between the top 7b of the ridge 5 and the top 7c of the ridge 5 adjacent thereto. Whereas the dimension W1 is 3.7 mm, the interval dimension W2 between the top 7c of the ridge 5 and the top 7d of the ridge 5 adjacent thereto is 2.8 mm. In this embodiment, the space | interval dimension between the top parts 7 of the adjacent two protruding item | lines 5 is not fixed, but it becomes a structure by which a some variation is set in the range of 2-10 mm, and they are arrange | positioned irregularly. Yes.

また、凸条５の頂部７ｅの幅寸法Ｗ３が１．４ｍｍとなっているのに対し、凸条５の頂部７ｆの幅寸法Ｗ４は２ｍｍとなっている。このように、凸条５の頂部７の幅寸法も一定ではなく、０．５〜５ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。 Further, the width dimension W3 of the top portion 7e of the ridge 5 is 1.4 mm, whereas the width dimension W4 of the top portion 7f of the ridge 5 is 2 mm. Thus, the width dimension of the top portion 7 of the ridge 5 is not constant, and a plurality of variations are set in a range of 0.5 to 5 mm, and they are irregularly arranged.

更に、図３（図１の木質合成建材１の端面２の部分拡大図）に示すように、凸条５の頂部７ｃから凹条６の最深部８ｃまでの深さ寸法Ｄ１が１．５ｍｍとなっているのに対し、凸条５の頂部７ｅから凹条６の最深部８ｅまでの深さ寸法Ｄ２は１．０ｍｍとなっている。このように、凹条６の最深部８の深さ寸法も一定ではなく、０．５〜２．５ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。 Furthermore, as shown in FIG. 3 (partially enlarged view of the end surface 2 of the woody synthetic building material 1 in FIG. 1), the depth dimension D1 from the top 7c of the ridge 5 to the deepest part 8c of the ridge 6 is 1.5 mm. On the other hand, the depth dimension D2 from the top portion 7e of the ridge 5 to the deepest portion 8e of the ridge 6 is 1.0 mm. Thus, the depth dimension of the deepest part 8 of the groove 6 is not constant, and a plurality of variations are set in a range of 0.5 to 2.5 mm, and they are irregularly arranged. .

凸条５と凹条６との間の傾斜部については、図３に示すように、比較的緩やかな角度の緩傾斜部９と、それらよりも角度がきつい急傾斜部１０と、二種類のものが形成されている。そして、緩傾斜部９及び急傾斜部１０の傾斜角度（表側面４に対する角度）も一定ではなく、緩傾斜部９については１０〜４５°の範囲で、急傾斜部１０については４６〜９０°の範囲で、それぞれ複数のバリエーションが設定され、それらが不規則に配置される構成となっている。また、緩傾斜部９の横幅寸法（凸条５の頂部７から凹条６の最深部８までの水平方向の寸法）は、２〜１０ｍｍの範囲に設定することが好ましく、また、急傾斜部１０の横幅寸法は、０〜２ｍｍの範囲に設定することが好ましい。 As shown in FIG. 3, the inclined portion between the ridge 5 and the concave ridge 6 has two types, a gently inclined portion 9 having a relatively gentle angle, and a steeply inclined portion 10 having a tighter angle than them. Things are formed. And the inclination angle (angle with respect to the front side surface 4) of the gently inclined part 9 and the steeply inclined part 10 is not constant, the range of 10 to 45 degrees for the gently inclined part 9, and 46 to 90 degrees for the suddenly inclined part 10. In this range, a plurality of variations are set, and they are arranged irregularly. Moreover, it is preferable to set the horizontal width dimension (horizontal dimension from the top part 7 of the protruding item | line 5 to the deepest part 8 of the recessed item | line 6) of the gentle inclination part 9 in the range of 2-10 mm, and a steep inclination part The width dimension of 10 is preferably set in the range of 0 to 2 mm.

尚、緩傾斜部９と急傾斜部１０は、基本的には、木質合成建材１の横幅方向へ向かって交互に配置される構成となっている。つまり、一つの凸条５の頂部７の両側（或いは、一つの凹条６の最深部８の両側）には、緩傾斜部９と急傾斜部１０とがそれぞれ一つずつ配置されている。 In addition, the gentle inclination part 9 and the steep inclination part 10 become a structure arrange | positioned alternately toward the width direction of the wooden synthetic building material 1 fundamentally. That is, on each side of the top portion 7 of one ridge 5 (or on both sides of the deepest portion 8 of one recess 6), one gently inclined portion 9 and one steeply inclined portion 10 are arranged.

例えば、凸条５の頂部７の右側に緩傾斜部９が形成されている場合には、左側に急傾斜部１０が形成され、また同様に、凹条６の最深部８の左側に緩傾斜部９が形成されている場合には、右側に急傾斜部１０が形成される。また、隣接する二つの凸条５の間には、一つの緩傾斜部９と一つの急傾斜部１０とが組み合わされて、凹条６の最深部８を挟んで連なった状態となり、二つの隣接する凹条６の最深部８の間にも、一つの緩傾斜部９と一つの急傾斜部１０とが組み合わされて、凸条５を挟んで連なった状態となる。 For example, when the gently inclined portion 9 is formed on the right side of the top portion 7 of the ridge 5, the steeply inclined portion 10 is formed on the left side, and similarly, gently inclined on the left side of the deepest portion 8 of the recessed strip 6. When the portion 9 is formed, the steeply inclined portion 10 is formed on the right side. In addition, between two adjacent ridges 5, one gently inclined portion 9 and one steeply inclined portion 10 are combined to form a state in which the deepest portion 8 of the groove 6 is sandwiched between the two ridges 5. Also between the deepest portions 8 of the adjacent recesses 6, one gently inclined portion 9 and one steeply inclined portion 10 are combined to form a state in which the protruding strips 5 are sandwiched.

このように、凸条５（一つの表側面４に形成されているすべての凸条５の３０％以上（より好ましくは５０％以上））は、頂部７の両側に緩傾斜部９と急傾斜部１０とがそれぞれ一つずつ配置されることにより、頂部７の中心を基準として左右の形状が非対称的な形状となっており、また、凹条６（一つの表側面４に形成されているすべての凹条６の３０％以上（より好ましくは５０％以上））についても、最深部８の両側に緩傾斜部９と急傾斜部１０とがそれぞれ一つずつ配置されることにより、最深部８を基準として左右の形状が非対称的な形状となっている。 In this way, the ridges 5 (30% or more (more preferably 50% or more) of all the ridges 5 formed on one front side surface 4) are gently inclined with the gently inclined portions 9 on both sides of the top portion 7. By arranging each of the portions 10 one by one, the left and right shapes are asymmetrical with respect to the center of the top portion 7, and the recess 6 (formed on one front side surface 4 is formed. Even for 30% or more (more preferably 50% or more) of all the concave strips 6, one deep inclined portion 9 and one steeply inclined portion 10 are arranged on both sides of the deepest portion 8, respectively. With reference to 8, the left and right shapes are asymmetrical.

但し、緩傾斜部９と急傾斜部１０とが交互に配置されるという規則は、木質合成建材１の横幅方向全体にわたって貫徹している必要はなく、複数箇所において、緩傾斜部９、或いは、急傾斜部１０が、それぞれ二つ（或いは三つ以上）連続するような構成としてもよい。 However, the rule that the gently inclined portions 9 and the steeply inclined portions 10 are alternately arranged does not need to be penetrated throughout the entire width direction of the wooden synthetic building material 1, and in a plurality of places, the gently inclined portions 9 or It is good also as a structure where the steep inclination part 10 continues two (or three or more), respectively.

また、図２及び図３においては、緩傾斜部９がいずれも左上がり傾斜面となっており、急傾斜部１０はいずれも右上がり傾斜面となっているが、傾斜する向きについても、必ずしも一方向に固定する必要はなく、右上がりの緩傾斜部、及び、左上がりの急傾斜部が、いずれかの位置に配置される構成としてもよい。 In FIGS. 2 and 3, each of the gently inclined portions 9 is an upwardly inclined surface and each of the steeply inclined portions 10 is an upwardly inclined surface. It is not necessary to fix in one direction, and a configuration in which a slowly rising portion that rises to the right and a steep inclination portion that rises to the left may be arranged at any position.

更に、各凹条６の最深部８を中心とする一定の範囲の領域は、図３に示すように、凹状の湾曲面として構成されているが、各凹条６を構成する湾曲面の曲率についても複数のバリエーションが設定され、それらが不規則に配置される構成となっている。 Furthermore, as shown in FIG. 3, the region in a certain range centered on the deepest portion 8 of each concave strip 6 is configured as a concave curved surface, but the curvature of the curved surface constituting each concave strip 6 is the same. A plurality of variations are also set for, and these are arranged irregularly.

次に、図１に示した木質合成建材１の製造方法を、本発明の第二実施形態として説明する。まず、十分に加熱した原料樹脂（熱可塑性合成樹脂と木粉とを混合したもの）を金型から押し出して、押出成形法により、木質合成建材１の基板１１を成形する。 Next, a method for manufacturing the woody synthetic building material 1 shown in FIG. 1 will be described as a second embodiment of the present invention. First, a sufficiently heated raw material resin (a mixture of thermoplastic synthetic resin and wood powder) is extruded from a mold, and the substrate 11 of the wooden synthetic building material 1 is formed by an extrusion molding method.

尚、成形に際しては、内部に大中空部３ａ、及び、小中空部３ｂ（図１参照）が形成されるとともに、表側面に多数の凸条、及び、凹条が形成されるような金型であって、後述する研削工程を実施した後において、図２及び図３に示すような、凸条５、凹条６、頂部７、最深部８、緩傾斜部９、及び、急傾斜部１０が形成され、かつ、隣接する二つの凸条５の頂部７間の間隔、凸条５の頂部７の幅、凹条６の最深部８の深さ、緩傾斜部９及び急傾斜部１０の角度、凹条６の湾曲面の曲率等が、横幅方向について不規則に配置されるように設計された金型を用いる。 In molding, a mold in which a large hollow portion 3a and a small hollow portion 3b (see FIG. 1) are formed inside, and a large number of ridges and ridges are formed on the front side surface. Then, after carrying out the grinding process described later, as shown in FIG. 2 and FIG. 3, the ridge 5, the ridge 6, the top 7, the deepest part 8, the gently inclined part 9, and the steeply inclined part 10 And the distance between the tops 7 of the two adjacent ridges 5, the width of the top 7 of the ridges 5, the depth of the deepest part 8 of the ridges 6, the gently inclined parts 9 and the steeply inclined parts 10. A mold designed so that the angle, the curvature of the curved surface of the concave strip 6 and the like are irregularly arranged in the lateral width direction is used.

そして、成型温度１６０〜２２０℃で成型された基板１１は、所定時間を置いて冷却される。基板１１は冷却されて常温状態になると、「ヒケ」と呼ばれる変形（原料樹脂の冷却に伴う収縮に起因する変形）が生じる。図４は、成形後における基板１１の形状の一例を示す部分拡大図である。この図において、破線は、金型１２の輪郭線を示している。図示されているように、冷却された基板１１の表面形状は、「ヒケ」が生じる結果、必ずしも金型１２の輪郭とは一致しない。 Then, the substrate 11 molded at a molding temperature of 160 to 220 ° C. is cooled after a predetermined time. When the substrate 11 is cooled to a room temperature, a deformation called “sink” (deformation due to shrinkage accompanying cooling of the raw material resin) occurs. FIG. 4 is a partially enlarged view showing an example of the shape of the substrate 11 after molding. In this figure, the broken line indicates the outline of the mold 12. As shown in the figure, the surface shape of the cooled substrate 11 does not necessarily match the contour of the mold 12 as a result of “sinking”.

このような変形は、収縮が生じにくい原料樹脂を適宜選択して使用したり、原料の質を均一にすること等によって、ある程度は回避することができる。また、収縮量を予測し、これを考慮に入れた上で金型を設計することにより、ある程度対応することができる。しかしながら、本実施形態のように合成樹脂に木粉を混合しているような場合や、内部に中空部（図１に示す大中空部３ａ、小中空部３ｂ等）を形成しているような場合、また、合成樹脂として再生原料を使用するような場合には、「ヒケ」による収縮変形が、各部位毎に異なる態様、異なる度合いで生じる可能性があり、それらの収縮量、或いは、変形の具合を予測することは非常に難しい。このため、基板１１の表面に形成される凸条５の先端部分の高さ位置は、図５に示すように区々となってしまう可能性がある。 Such deformation can be avoided to some extent by appropriately selecting and using a raw material resin that is unlikely to shrink, or by making the quality of the raw material uniform. Further, it is possible to cope with the problem by predicting the shrinkage amount and designing the mold after taking this into consideration. However, when wood powder is mixed with synthetic resin as in the present embodiment, or hollow portions (large hollow portion 3a, small hollow portion 3b, etc. shown in FIG. 1) are formed inside. In this case, when a recycled material is used as a synthetic resin, shrinkage deformation due to “sink” may occur in different modes and different degrees for each part. It is very difficult to predict the condition. For this reason, the height position of the front-end | tip part of the protruding item | line 5 formed in the surface of the board | substrate 11 may become uneven as shown in FIG.

そこで本実施形態においては、基板１１の成型後、表側面に形成される多数の凸条５、及び、凹条６のうち、各凸条５の先端部分を、一定の基準線Ｌ（図５参照）に沿って除去する工程（凸条先端部分の研削工程）が実施される。尚、凸条５の先端部分の除去は、サンダー、グラインダー、電動カンナ装置、或いは、ワイヤブラシロール等の研削装置（又は切削装置）を用いて、基板１１の凸条５の先端部分（図５の基準線Ｌよりも上の部分）を研削（又は切削）することによって行う。この工程を実施することにより、表面において「ヒケ」による収縮変形が生じた場合でも、また、収縮変形の態様や度合いが部位によって区々であっても、全体として歪みのない平らな表側面４を有する木質合成建材１を製造することができる。 Therefore, in the present embodiment, after the substrate 11 is molded, among the many ridges 5 and the ridges 6 formed on the front side, the tip portions of the ridges 5 are connected to a certain reference line L (FIG. 5). The step of removing along the reference (the step of grinding the tip of the ridge) is performed. In addition, the removal of the front-end | tip part of the protruding item | line 5 uses the grinding device (or cutting device), such as a sander, a grinder, an electric plane apparatus, or a wire brush roll, and the front-end | tip part of the protruding item | line 5 of the board | substrate 11 (FIG. 5). The portion above the reference line L) is ground (or cut). By carrying out this process, even when shrinkage deformation due to “sink” occurs on the surface, or even if the mode and degree of shrinkage deformation vary depending on the part, the flat front surface 4 with no distortion as a whole. A woody synthetic building material 1 having

尚、木粉が混合された合成樹脂を金型から押し出して基板１１の成形を行うと、基板１１の表面付近には、木粉の分布密度が比較的低く、合成樹脂の分布密度が高い層（表層１１ａ）（図６参照）が形成される。一方、基板１１の内部（表面付近以外の部分）においては、合成樹脂と木粉とが均等に混ざり合った層（内層１１ｂ）が形成される。 When the synthetic resin mixed with wood powder is extruded from the mold and the substrate 11 is molded, a layer having a relatively low distribution density of the wood powder and a high distribution density of the synthetic resin is formed near the surface of the substrate 11. (Surface layer 11a) (see FIG. 6) is formed. On the other hand, a layer (inner layer 11b) in which the synthetic resin and the wood flour are evenly mixed is formed inside the substrate 11 (portion other than the vicinity of the surface).

基板１１の凸条５の先端部分（図６に示す基準線Ｌよりも上の部分）を切削して除去すると、図７に示すように、凸条５の頂部７において内層１１ｂが露出することになり、それ以外の部分（凹条６、緩傾斜部９、及び、急傾斜部１０）には、表層１１ａが残存することになる。 When the tip portion of the ridge 5 of the substrate 11 (the portion above the reference line L shown in FIG. 6) is cut and removed, the inner layer 11b is exposed at the top 7 of the ridge 5 as shown in FIG. Thus, the surface layer 11a remains in the other portions (the concave strip 6, the gently inclined portion 9, and the steeply inclined portion 10).

この表層１１ａは、上述の通り合成樹脂の分布密度が高いため、表面が平滑面となり、光の反射率が高くなる。従って、表層１１ａが残存する凹条６、緩傾斜部９、及び、急傾斜部１０は、光沢があり、視線角度によって色調が変化するような外観となる。特に、凹条６の最深部８付近は、凹状の湾曲面として構成されているため、多方向からの光が映り込み、多彩な色調となる。 Since the surface layer 11a has a high distribution density of the synthetic resin as described above, the surface becomes a smooth surface and the reflectance of light increases. Therefore, the concave strip 6, the gently inclined portion 9 and the steeply inclined portion 10 in which the surface layer 11a remains are glossy and have an appearance in which the color tone changes depending on the viewing angle. Particularly, since the vicinity of the deepest portion 8 of the groove 6 is configured as a concave curved surface, light from multiple directions is reflected, and various colors are obtained.

一方、内層１１ｂは、表層１１ａと比べて木粉の分布密度が高いため、内層１１ｂが外方へ向かって露出した場合、合成樹脂と混ざり合った状態の多量の木粉がその表面に出現することになる。そして、これらの木粉の表面は平滑ではないため、光の反射率が低く、従って、内層１１ｂが露出する凸条５の頂部７は、木粉の色と合成樹脂の色とが混ざった光沢のない色調となり、視線角度が変わっても色調があまり変化しないような外観となる。 On the other hand, since the inner layer 11b has a higher wood powder distribution density than the surface layer 11a, when the inner layer 11b is exposed outward, a large amount of wood powder mixed with the synthetic resin appears on the surface. It will be. And since the surface of these wood powders is not smooth, the reflectance of light is low. Therefore, the top part 7 of the ridge 5 where the inner layer 11b is exposed is a luster in which the color of wood powder and the color of synthetic resin are mixed. The color tone does not change so much even if the line-of-sight angle changes.

本実施形態の方法によって製造した木質合成建材１においては、上述の通り、表側面４において、異なる色調、即ち、光沢があり、視線角度によって多彩に変化する色調（凹条６、緩傾斜部９、及び、急傾斜部１０）と、木粉の色が混ざった光沢のない色調（凸条５の頂部７）が、対照的に表れるようになっており、その結果、木質合成建材１の表側面４を、不均一な色調、即ち、不均一な光の反射による自然な木質感のある平面とすることができる。 In the woody synthetic building material 1 manufactured by the method of the present embodiment, as described above, the front side surface 4 has a different color tone, that is, a glossy color tone that changes variously depending on the line-of-sight angle (concave 6, gently inclined portion 9. , And the steeply inclined portion 10) and the lusterless color tone (the top portion 7 of the ridge 5) in which the color of the wood powder is mixed, appear as a contrast, and as a result, the surface of the wooden synthetic building material 1 The side surface 4 can be a flat surface with a non-uniform color tone, that is, a natural wood texture due to non-uniform light reflection.

また、この木質合成建材１においては、二つの凸条５の間、或いは、二つの凹条６の間に、比較的角度が緩やかな緩傾斜部９と、それらよりも角度がきつい急傾斜部１０と、二種類の傾斜部が一つずつ組み合わされて配置され、その結果、凸条５及び凹条６は、頂部７の中心或いは最深部８を基準として左右が非対称的な形状となっているため、従来の木質合成建材と比較して、より不均一な色調、形状による不均一な光の反射による外観の、より天然木材に近い風合いを有する表側面４が形成される。 Moreover, in this wooden composite building material 1, between the two ridges 5 or between the two ridges 6, a gently inclined portion 9 having a relatively gentle angle and a steeply inclined portion having a tighter angle than those. 10 and two kinds of inclined portions are arranged one by one, and as a result, the ridges 5 and the ridges 6 have asymmetric shapes on the left and right with respect to the center of the top portion 7 or the deepest portion 8. Therefore, as compared with the conventional woody synthetic building material, the front side surface 4 having a more non-uniform color tone and appearance by non-uniform light reflection due to the shape and having a texture closer to natural wood is formed.

この点についてより具体的に説明すると、天然木の板材は、製材時において表面が平滑面となるように加工された場合であっても、風雨或いは日光に晒された状態で長い時間が経過すると、木目部分（年輪の境界部分）に沿って表面に凹凸が生じてくる。この表面の凹凸形状は、木目と木目の間の部分が痩せて凹状にへこみ、木目部分が相対的に凸状に尖ることによって形成される。そして、木目の凸条の一方側の傾斜は比較的緩やかな角度になるのに対し、反対側の傾斜は急な角度となることが多い。この傾向は、柾目材よりも板目材において顕著に表れる。 This point will be explained more specifically. When a natural wood board is processed so that the surface becomes a smooth surface at the time of lumbering, a long time elapses in a state exposed to wind and rain or sunlight. The surface becomes uneven along the grain (boundary part of the annual ring). The uneven shape on the surface is formed by thinning and denting the portion between the grain and the grain, and the point of the grain being relatively convex. And while the slope on one side of the ridges of the grain is a relatively gentle angle, the slope on the opposite side is often a steep angle. This tendency appears more markedly in the grain material than in the mesh material.

本実施形態の方法によって製造された木質合成建材１は、上述の通り、二つの凸条５の間、或いは、二つの凹条６の間に、比較的角度が緩やかな緩傾斜部９と、それらよりも角度がきつい急傾斜部１０と、二種類の傾斜部が一つずつ組み合わされて配置され、上記のような天然木材において表れる経年変化の形状を模した形状となっている。また、緩傾斜部９と急傾斜部１０とでは、一つの視線角度に対する光の入射角度が異なり、異なる色調の外観を呈することになる。このため、従来の木質合成建材と比較して、より天然木材に近い風合いを有している。 As described above, the wood composite building material 1 manufactured by the method of the present embodiment has a gentle slope portion 9 having a relatively gentle angle between the two ridges 5 or between the two ridges 6, and The steeply inclined portion 10 with a tighter angle than those and two types of inclined portions are arranged in combination, and have a shape imitating the shape of secular change that appears in natural wood as described above. In addition, the lightly inclined portion 9 and the steeply inclined portion 10 have different incident angles of light with respect to one line-of-sight angle, and exhibit different colors. For this reason, compared with the conventional wood synthetic building material, it has a texture closer to natural wood.

また、隣接する二つの凸条５の頂部７間の間隔寸法、凸条５の頂部７の幅寸法、凹条６の最深部８の深さ寸法、緩傾斜部９の傾斜角度、急傾斜部１０の傾斜角度、及び、凹条６を構成する湾曲面の曲率が一定ではなく、各ファクターについてそれぞれ複数のバリエーションが設定され、それらが不規則に配置される構成となっているため、本実施形態の方法によって製造した木質合成建材１は、表側面４において、様々な色調が複雑に組み合わされた外観を呈することになり、一種類の樹脂原料（熱可塑性合成樹脂と木粉と副原料とを混合した一種類の材料）のみを使用した場合であっても、天然木材の風合いを備えた平面を構成することができる。 Also, the distance between the tops 7 of the two adjacent ridges 5, the width of the top 7 of the ridges 5, the depth of the deepest part 8 of the ridges 6, the inclination angle of the gently inclined part 9, the steeply inclined part Since the inclination angle of 10 and the curvature of the curved surface constituting the recess 6 are not constant, a plurality of variations are set for each factor, and these are irregularly arranged. The wood synthetic building material 1 manufactured by the method of the form will exhibit an appearance in which various color tones are intricately combined on the front side surface 4, and one kind of resin raw material (thermoplastic synthetic resin, wood powder and auxiliary raw material) Even when only one kind of material is used, a plane having a natural wood texture can be formed.

また、凸条先端部分の研削工程を実施することにより、図７に示すような頂部７を形成した後、更に、ワイヤブラシロール等のように、研削部分に可撓性を有する研削装置を用いて、凸条５の頂部７の両肩部１３，１３を、図８に示すような状態となるように削る工程（凸条肩部の研削工程）を実施した場合には、ある程度表層１１ａが削られる結果、表層１１ａと内層１１ｂの中間的な特徴を呈する外観となる。より具体的には、図８に示す両肩部１３，１３をワイヤブラシロール等で削ることによって出現する層は、木粉の分布密度が、内層１１ｂよりも低く、表層１１ａの表面側よりも高くなる。従って、光沢の度合いも、表層１１ａの表面側と内層１１ｂとの中間となり、このため、より多彩な色調が複雑に組み合わされた外観を呈することになり、木質合成建材１の表側面４において、より天然木材に近い風合いを備えた平面を構成することができる。 Moreover, after forming the top part 7 as shown in FIG. 7 by carrying out the grinding process of the ridge tip part, a grinding device having flexibility in the grinding part, such as a wire brush roll, is used. Then, when the step of grinding the shoulders 13 and 13 of the top 7 of the ridge 5 so as to be in the state shown in FIG. 8 (grinding step of the ridge shoulder) is carried out, the surface layer 11a is to some extent. As a result of the cutting, an appearance having intermediate characteristics between the surface layer 11a and the inner layer 11b is obtained. More specifically, the layer appearing by scraping the shoulder portions 13 and 13 shown in FIG. 8 with a wire brush roll or the like has a wood powder distribution density lower than that of the inner layer 11b and higher than the surface side of the surface layer 11a. Get higher. Accordingly, the degree of gloss is also intermediate between the surface side of the surface layer 11a and the inner layer 11b, and therefore, an appearance in which more various color tones are combined in a complicated manner is exhibited. In the front side surface 4 of the wooden synthetic building material 1, A plane having a texture closer to that of natural wood can be formed.

尚、凸条先端部分の研削工程を実施した後に凸条肩部の研削工程を行うのではなく、ワイヤブラシロール等の研削装置を用いて、凸条５の先端部分の除去と、凸条５の両肩部７ａ，７ａの切削を、一つの工程で同時に実施してもよい。 In addition, after performing the grinding process of the protruding item | line front-end | tip part, the grinding process of a protruding item | line shoulder part is not performed, but removal of the front-end | tip part of the protruding item | line 5 and the protruding item | line 5 are performed using grinding devices, such as a wire brush roll. The both shoulder portions 7a and 7a may be simultaneously cut in one step.

最後に、本発明の第三実施形態について説明する。図９は、本発明の第三実施形態に係る木質合成建材１の端面２の部分拡大図である。この木質合成建材１は、表側面４において長手方向に延在する凸条５と凹条６の間の基本形状が、傾斜面ではなく、湾曲面として形成される点で、第一実施形態の木質合成建材と相違しているが、その他の点については、第一実施形態の木質合成建材と同一である。 Finally, a third embodiment of the present invention will be described. FIG. 9 is a partially enlarged view of the end surface 2 of the wood composite building material 1 according to the third embodiment of the present invention. This wooden synthetic building material 1 is the first embodiment in that the basic shape between the ridges 5 and 6 extending in the longitudinal direction on the front side surface 4 is formed as a curved surface instead of an inclined surface. Although it is different from the woody synthetic building material, the other points are the same as the woody synthetic building material of the first embodiment.

即ち、本実施形態の木質合成建材１も、端面２、及び、長手方向と直交する断面に表れる表側面４の凹凸形状が、隣接する二つの凸条５の頂部７間の間隔、凸条５の頂部の幅、凹条６の最深部８の深さ（凸条５の頂部から凹条６の最深部８までの深さ）等が、横幅方向について不規則に配置される構成となっている。 That is, also in the woody synthetic building material 1 of this embodiment, the uneven shape of the end surface 2 and the front side surface 4 appearing in the cross section orthogonal to the longitudinal direction is the distance between the tops 7 of the two adjacent protruding ridges 5, the protruding ridge 5 And the depth of the deepest portion 8 of the concave strip 6 (depth from the top of the convex strip 5 to the deepest portion 8 of the concave strip 6) are irregularly arranged in the lateral width direction. Yes.

より具体的には、隣接する二つの凸条５の頂部７間の間隔寸法が一定ではなく、２〜１０ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。また、凸条５の頂部７の幅寸法も一定ではなく、０．５〜５ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。更に、凹条６の最深部８の深さ寸法も一定ではなく、０．５〜２．５ｍｍの範囲で複数のバリエーションが設定され、それらが不規則に配置される構成となっている。 More specifically, the distance between the tops 7 of the two adjacent ridges 5 is not constant, and a plurality of variations are set in the range of 2 to 10 mm, and they are arranged irregularly. Yes. Moreover, the width dimension of the top part 7 of the ridge 5 is not constant, and a plurality of variations are set in a range of 0.5 to 5 mm, and they are arranged irregularly. Furthermore, the depth dimension of the deepest part 8 of the recess 6 is not constant, and a plurality of variations are set in a range of 0.5 to 2.5 mm, and they are arranged irregularly.

そして、凸条５の頂部７から凹条６の最深部８までの部分には、上述の通り、傾斜部は形成されておらず、湾曲面のみが形成されている。これらの湾曲面の曲率についても複数のバリエーションが設定され、それらが不規則に配置される構成となっている。その結果、凸条５（一つの表側面４に形成されているすべての凸条５の３０％以上（より好ましくは５０５以上））は、頂部７の中心を基準として左右の形状が非対称的な形状となっている。 And as above-mentioned, the inclination part is not formed in the part from the top part 7 of the protruding item | line 5 to the deepest part 8 of the protruding item | line 6, but only the curved surface is formed. A plurality of variations are also set for the curvature of these curved surfaces, and they are arranged irregularly. As a result, the ridges 5 (30% or more (more preferably 505 or more) of all the ridges 5 formed on one front side surface 4) are asymmetric in the left and right shapes with respect to the center of the top portion 7. It has a shape.

この木質合成建材１も、第二実施形態として説明した方法によって製造することができ、光沢があり、視線角度によって多彩に変化する色調と、木粉の色が混ざった光沢のない色調が、対照的に表れるような特徴を有し、木質感のある表側面４を形成することができる。 This woody synthetic building material 1 can also be manufactured by the method described as the second embodiment, and is contrasting with a glossy color tone that varies in various ways depending on the viewing angle, and a non-glossy color tone mixed with the color of wood powder. It is possible to form a front side surface 4 having a characteristic that appears like a wood and having a wood texture.

また、この木質合成建材１においては、凸条５の頂部７から凹条６の最深部８までの湾曲面として、異なる曲率の湾曲面が不規則に配置され、凸条５及び凹条６が、頂部７の中心或いは最深部８を基準として左右非対称的な形状となっているため、従来の木質合成建材と比較して、より天然木材に近い風合いを有する表側面４が形成されている。 Moreover, in this wood synthetic building material 1, the curved surface of a different curvature is irregularly arrange | positioned as a curved surface from the top part 7 of the protruding item | line 5 to the deepest part 8 of the recessed item | line 6, and the protruding item | line 5 and the protruding item | line 6 are provided. Since the shape is asymmetrical with respect to the center of the top portion 7 or the deepest portion 8, the front side surface 4 having a texture closer to that of natural wood is formed as compared with the conventional woody synthetic building material.

また、隣接する二つの凸条５の頂部７間の間隔寸法、凸条５の頂部７の幅寸法、凹条６の最深部８の深さ寸法等が一定ではなく、各ファクターについてそれぞれ複数のバリエーションが設定され、それらが不規則に配置される構成となっているため、本実施形態の方法によって製造した木質合成建材１は、表側面４において、様々な色調が複雑に組み合わされた外観を呈することになり、一種類の樹脂原料（熱可塑性合成樹脂と木粉と副原料とを混合した一種類の材料）のみを使用した場合であっても、天然木材の風合いを備えた平面を構成することができる。 Further, the distance between the tops 7 of the two adjacent ridges 5, the width of the top 7 of the ridges 5, the depth of the deepest part 8 of the recesses 6, etc. are not constant, and there are a plurality of factors for each factor. Since the variations are set and they are arranged irregularly, the wood composite building material 1 manufactured by the method of this embodiment has an appearance in which various color tones are combined in a complex manner on the front side surface 4. Even if only one type of resin raw material (one type of material that is a mixture of thermoplastic synthetic resin, wood flour, and auxiliary materials) is used, a plane with the texture of natural wood is constructed. can do.

尚、第一実施形態、及び、第三実施形態においては、木質合成建材１の内部に複数の中空部３（大中空部３ａ、及び、小中空部３ｂ）が形成されているが（図１、図９参照）、図１０に示すように、中空部が形成されないソリッドな構造とすることもできる。また、基板１１の成型は、押出成形法には限定されず、型内に樹脂を流し込む注型成型法、或いは、樹脂を射出する射出成型法によって行うこともできる。 In the first embodiment and the third embodiment, a plurality of hollow portions 3 (a large hollow portion 3a and a small hollow portion 3b) are formed inside the wooden synthetic building material 1 (FIG. 1). As shown in FIG. 10, a solid structure in which a hollow portion is not formed can also be used. Further, the molding of the substrate 11 is not limited to the extrusion molding method, and can be performed by a casting molding method in which a resin is poured into a mold or an injection molding method in which a resin is injected.

１：木質合成建材、
２：端面、
３：中空部、
３ａ：大中空部、
３ｂ：小中空部、
４：表側面、
５：凸条、
６：凹条、
７，７ａ〜７ｆ：頂部、
８，８ｃ，８ｅ：最深部、
９：緩傾斜部、
１０：急傾斜部、
１１：基板、
１２：金型、
１１ａ：表層、
１１ｂ：内層、
１３：肩部 1: Woody synthetic building material,
2: end face,
3: Hollow part,
3a: Large hollow part,
3b: small hollow part,
4: Front side,
5: ridges,
6: Concave,
7, 7a-7f: top,
8, 8c, 8e: deepest part,
9: Slightly inclined part,
10: Steeply inclined part,
11: substrate
12: Mold,
11a: surface layer,
11b: inner layer,
13: Shoulder

Claims

A wooden synthetic building material formed by extruding a raw material resin, which is a mixture of thermoplastic synthetic resin, wood powder, and auxiliary materials, from a mold or by pouring or injecting into a mold,
On the front side surface, a large number of ridges and recesses extending in the longitudinal direction are formed,
Between the top of the ridge and the deepest part of the ridge adjacent to the ridge, a gently inclined part or a table whose inclination angle to the front side surface is set to any angle within the range of 10 to 45 ° A steeply inclined portion is formed with an inclination angle with respect to the side surface set to any angle within the range of 46 to 90 °
Of all the ridges formed on one front side, 30% or more of the ridges are formed with one gently inclined portion and one steeply inclined portion on both sides of the top portion, so that the center of the top portion is A wooden synthetic building material characterized in that the left and right shapes as a reference are asymmetrical.

30% or more of all the grooves formed on one front side are formed with one gentle slope part and one steep slope part on both sides of the deepest part. The woody synthetic building material according to claim 1, wherein the left and right shapes as a reference are asymmetrical.

In the range of 10 to 45 ° for the gently inclined portion and in the range of 46 to 90 ° for the steeply inclined portion, a plurality of variations are set for the respective inclination angles, and these are irregularly arranged in the width direction. The woody synthetic building material according to claim 1 or 2, wherein

A plurality of variations are set in the range of 2 to 10 mm for the distance between the tops of two adjacent ridges, and they are arranged irregularly in the width direction,
For the width dimension of the top of the ridge, a plurality of variations are set in the range of 0.5 to 5 mm, and they are irregularly arranged in the width direction,
About the depth dimension from the top of the ridge to the deepest part of the ridge, a plurality of variations are set in the range of 0.5 to 2.5 mm, and they are irregularly arranged in the width direction. The woody synthetic building material according to any one of claims 1 to 3.

The curvature of the concave curved surface centering on the deepest part of the concave stripe is set with a plurality of variations, and they are irregularly arranged in the lateral width direction. Woody synthetic building materials described in 1.

A wooden synthetic building material formed by extruding a raw material resin, which is a mixture of thermoplastic synthetic resin, wood powder, and auxiliary materials, from a mold or by pouring or injecting into a mold,
On the front side surface, a large number of ridges and recesses extending in the longitudinal direction are formed,
In 30% or more of the ridges formed on one front side, only a curved surface is formed between the top of the ridge and the deepest part of the groove adjacent to the ridge. ,
Multiple variations are set for the curvature of the curved surface, they are arranged irregularly,
30% or more of all the ridges formed on one front side, and the left and right shapes with respect to the center of the top are asymmetrical shapes. Building materials.

A raw material resin in which a thermoplastic synthetic resin, wood flour, and auxiliary materials are mixed is extruded from a mold in which a large number of ridges and ridges are formed on the front side surface, or such a mold. After casting or injecting into the substrate, the substrate is molded, and then, among the many ridges formed on the front side of the substrate and the ridges, the tip of each ridge is removed along a certain reference line A method of manufacturing a wood composite building material by executing a grinding process,
When molding the substrate, a large number of ridges and recesses extending in the longitudinal direction are formed on the front side surface, and the inclination with respect to the front side surface is between the ridge and the deepest part of the recess adjacent to the ridges. A gently inclined portion set to any angle within the range of 10 to 45 °, or a steeply inclined portion set to any angle within the range of 46 to 90 ° with respect to the front side surface 30% or more of all the ridges formed on one front side are formed with one gently inclined portion and one steeply inclined portion on both sides of the top portion, A method for producing a woody synthetic building material, wherein a mold is used in which the left and right shapes with respect to the center are asymmetrical.

When molding the substrate, 30% or more of all the grooves formed on one front side surface are formed with one gently inclined portion and one steeply inclined portion on both sides of the deepest portion. The method for producing a woody synthetic building material according to claim 7, wherein a mold is used in which the left and right shapes with respect to the deepest part are asymmetrical.

In forming the substrate, a plurality of variations are set for the inclination angle in the range of 10 to 45 ° for the gently inclined portion and in the range of 46 to 90 ° for the steeply inclined portion. The method for producing a woody synthetic building material according to claim 7 or 8, wherein a mold that is regularly arranged is used.

A plurality of variations are set in the range of 2 to 10 mm for the distance between the tops of two adjacent ridges, and they are arranged irregularly in the width direction,
For the width dimension of the top of the ridge, a plurality of variations are set in the range of 0.5 to 5 mm, and they are irregularly arranged in the width direction,
About the depth dimension from the top of the ridge to the deepest part of the ridge, a plurality of variations are set in the range of 0.5 to 2.5 mm, and they are irregularly arranged in the width direction. The manufacturing method of the woody synthetic building material in any one of Claims 7-9.

A plurality of variations are set for the curvature of the concave curved surface centering on the deepest part of the concave stripe, and a mold is used in which they are irregularly arranged in the lateral width direction. The manufacturing method of the woody synthetic building material in any one of 10.

A raw material resin in which a thermoplastic synthetic resin, wood flour, and auxiliary materials are mixed is extruded from a mold in which a large number of ridges and ridges are formed on the front side surface, or such a mold. After casting or injecting into the substrate, the substrate is molded, and then, among the many ridges formed on the front side of the substrate and the ridges, the tip of each ridge is removed along a certain reference line A method of manufacturing a wood composite building material by executing a grinding process,
In forming the substrate, a large number of ridges extending in the longitudinal direction, and concave ridges are formed on the front side, and among all the ridges formed on one front side, over 30% of the ridges, Only the curved surface is formed between the ridges and the deepest part of the ridges adjacent to the ridges, a plurality of variations are set for the curvature of the curved surface, they are arranged irregularly, and one front side surface 30% or more of all the ridges formed in the above, using a mold in which the left and right shapes with respect to the center of the top are asymmetrical shapes are used. Manufacturing method.