JP6486296B2 - Manufacturing method of plate material - Google Patents
Manufacturing method of plate material Download PDFInfo
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- JP6486296B2 JP6486296B2 JP2016091046A JP2016091046A JP6486296B2 JP 6486296 B2 JP6486296 B2 JP 6486296B2 JP 2016091046 A JP2016091046 A JP 2016091046A JP 2016091046 A JP2016091046 A JP 2016091046A JP 6486296 B2 JP6486296 B2 JP 6486296B2
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- 239000000463 material Substances 0.000 title claims description 66
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000001035 drying Methods 0.000 claims description 19
- 239000013070 direct material Substances 0.000 claims description 11
- 238000009408 flooring Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000002023 wood Substances 0.000 description 8
- 241000219492 Quercus Species 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000002648 laminated material Substances 0.000 description 5
- 238000003860 storage Methods 0.000 description 3
- 241001070941 Castanea Species 0.000 description 2
- 235000014036 Castanea Nutrition 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241000218645 Cedrus Species 0.000 description 1
- 240000000731 Fagus sylvatica Species 0.000 description 1
- 235000010099 Fagus sylvatica Nutrition 0.000 description 1
- 240000000599 Lentinula edodes Species 0.000 description 1
- 241000039951 Lithocarpus glaber Species 0.000 description 1
- 241000282376 Panthera tigris Species 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 240000002871 Tectona grandis Species 0.000 description 1
- 241000190021 Zelkova Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 210000001145 finger joint Anatomy 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
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- 239000007787 solid Substances 0.000 description 1
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Description
本発明は板材の製造方法に関する。 The present invention relates to a method for manufacturing a plate material.
例えば、兵庫県内の民有林のうち、ほぼ４０％が広葉樹林であり、その広葉樹林のうちほぼ４０％がコナラやクヌギであるとの統計がある。広葉樹のうち、クリ、タモ、ケヤキ、ミズナラ等は木材の原料として広く利用されているが、成長に長い時間を必要とし、樹齢の古い木を使用する必要があることから、わが国では豊富な資源とはいえず、専ら輸入に頼っていた。
他方、広葉樹のうち、コナラやクヌギは成長が早く、資源としても豊富であり、杉や檜と同様に大量に使用が可能である。
For example, there are statistics that about 40% of the private forests in Hyogo Prefecture are broad-leaved forests, and about 40% of the broad-leaved forests are Quercus or Kunugi. Among broad-leaved trees, chestnuts, tammo, zelkova, mizunara, etc. are widely used as raw materials for timber. That said, it relied solely on imports.
On the other hand, among broad-leaved trees, Quercus and Kunugi grow fast and are abundant as resources, and can be used in large quantities, like cedar and bamboo.
ところで、木材を３０°Ｃ〜５０°Ｃの範囲の温度で、反り、歪み、変色を生じることなく低温乾燥するようにした技術が提案されているが（特許文献１）、この低温乾燥技術によってコナラやクヌギを乾燥させても反りや捩じれが発生して板材の用途には使用し難く、薪炭や椎茸のほだ木として利用されるに止まっていた（特許文献２）。 By the way, although the technique of drying low temperature without producing a curvature, distortion, and discoloration at the temperature of the range of 30 degreeC-50 degreeC is proposed (patent document 1), this low temperature drying technique is proposed. Even when dried konara and kunugi, warping and twisting occur, making it difficult to use for plate materials, and it has only been used as a charcoal or shiitake mushroom (Patent Document 2).
最近、薪炭やほだ木への需要が減少し、又里山が手入れされずに放置され、ほだ木を生産する場合にも樹齢６０〜８０年の大木を切ってその枝をほだ木に使用することが行われており、コナラやクヌギの用途の開発が求められていた。 Recently, the demand for wood charcoal and wood has decreased, and satoyama has been left unmaintained, and even when producing wood, it is used to cut large trees of 60 to 80 years old and use their branches for wood. There was a need to develop applications for Quercus and Kunugi.
本発明はかかる点に鑑み、コナラやクヌギから建築材などの板材を製造できるようにした板材の製造方法を提供することを課題とする。 This invention makes it a subject to provide the manufacturing method of the board | plate material which enabled it to manufacture board | plate materials, such as a building material, from a Japanese oak and a kunugi in view of this point.
そこで、本発明に係る板材の製造方法は、フローリング材を製造するにあたり、コナラ又はクヌギの幹から直材を切り出す工程と、直材から仕上げ幅及び仕上げ厚さよりも大きな粗板を製材する工程と、粗板を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１０％を超え２０％以下の範囲内の含水率となるまで低温乾燥する工程と、低温乾燥済みの粗板を仕上げ幅及び仕上げ厚さより大きな素板材に粗仕上げする工程と、粗仕上げ済みの素板材を遮光防湿シートで覆って養生する工程と、養生された素板材を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１０％以下の含水率になるまで低温再乾燥する工程と、低温再乾燥済みの素板材を仕上げ幅及び仕上げ厚みのフローリング材に仕上げる工程と、を備えたことを特徴とする。 Therefore, in the production method of the plate material according to the present invention, in producing the flooring material, a step of cutting out a direct material from the trunk of konara or kunugi, and a step of producing a rough plate larger than the finishing width and the finishing thickness from the direct material, A step of low-temperature drying the rough plate at a temperature in the range of 35 ° C. to 60 ° C. until the moisture content is in the range of more than 10% and 20% or less; The step of rough finishing to a base material larger than the finished thickness, the step of covering the rough finished base material with a light-proof moisture-proof sheet and curing, and the temperature of the cured base material within a range of 35 ° C to 60 ° C And a step of finishing the low-temperature re-dried base material into a flooring material having a finished width and a finished thickness.
本発明の特徴はコナラ又はクヌギから粗材を製材し、これを３５°Ｃ〜６０°Ｃの範囲内の温度で１５％〜２０％の範囲内の含水率となるまで低温乾燥し、遮光防湿シートで覆って養生した後、３５°Ｃ〜６０°Ｃの範囲内の温度で１０％以下の含水率となるまで低温再乾燥し、板材に仕上げるようにした点にある。 A feature of the present invention is that a rough material is sawn from Quercus or Kunugi, and this is dried at a low temperature until the moisture content is within a range of 15% to 20% at a temperature within a range of 35 ° C. to 60 ° C. After covering and curing with a sheet, it is re-dried at a low temperature until a moisture content of 10% or less at a temperature in the range of 35 ° C. to 60 ° C. to finish the plate.
３５°Ｃ〜６０°Ｃの範囲内の温度で１０％〜２０％の範囲内の含水率になるまで低温乾燥することによって反りや捩じれが少ない粗板が得られ、これを養生することによって粗板の含有水分が粗板全体で均一となり、その後に１０％以下の含水率になるまで低温再乾燥することによって反りや捩じれのない素板材が得られ、これを所定の寸法の板材に仕上げることによって、ブナやチークよりも高密度で高磨耗性の板材が得られ、家具材や床材に最適な板材を製造することができる。 A rough plate with less warping and twisting is obtained by drying at a low temperature until the moisture content is within the range of 10% to 20% at a temperature within the range of 35 ° C to 60 ° C. A base plate material free from warping and twisting is obtained by re-drying at a low temperature until the moisture content of the plate becomes uniform throughout the rough plate and then reaches a moisture content of 10% or less, and this is finished into a plate material of a predetermined size. As a result, a plate material having higher density and higher wear than beech and teak can be obtained, and a plate material optimal for furniture and flooring can be produced.
また、コナラ又はクヌギの特性として虎班などの杢があり、ナラやクリにも相当する高級な質感で意匠性にも優れ、釘の保持力が高く、施工性に優れた板材が得られる。 In addition, the characteristics of the oak or kunugi include tigers and the like, and a high-quality texture equivalent to oak and chestnut, excellent design, high nail holding power, and excellent workability can be obtained.
コナラやクヌギの幹から直材を切り出す場合、末口が２５ｃｍ以上、好ましくは２８ｃｍ以上のコナラ又はクヌギの幹から曲がり部分で切断して１〜５ｍの範囲内の長さ、好ましくは２ｍ〜４ｍの範囲内の長さの直材を切り出すのがよい。 When cutting straight wood from konara or kunugi trunks, the end is 25 cm or more, preferably 28 cm or more, and the length is in the range of 1 to 5 m, preferably 2 m to 4 m. It is better to cut out straight wood with a length within the range.
直材を製材して得られる粗板は板材の仕上げ幅よりも１５ｍｍ以上、好ましくは２０ｍｍ以上大きく、仕上げ厚さよりも５ｍｍ以上大きな粗板とするのがよい。直材は帯鋸台車とテーブルソーを用いて粗板に製材する。 The rough plate obtained by producing the direct material is preferably a rough plate that is 15 mm or more, preferably 20 mm or more larger than the finished width of the plate material, and 5 mm or more larger than the finished thickness. The direct material is made into a rough plate using a band saw carriage and a table saw.
粗板や素板材は低温乾燥機を用い、３５°Ｃ〜６０°Ｃの範囲内の温度にて低温乾燥する。３５°Ｃ以上としたのは３５°Ｃ未満の温度では粗板を１０％〜２０％の範囲内の含水率又は素板材を１０％以下の含水率まで乾燥するのに長い時間を必要とし、６０°Ｃを超えると、乾燥によって反りや捩じれが大きくなるおそれがあるからである。 The rough plate and the base plate material are dried at a low temperature at a temperature in the range of 35 ° C. to 60 ° C. using a low temperature dryer. The reason why the temperature is set to 35 ° C. or more is that it takes a long time to dry the rough plate to a moisture content in the range of 10% to 20% or a base plate material to a moisture content of 10% or less at a temperature below 35 ° C. This is because if it exceeds 60 ° C, warping and twisting may increase due to drying.
粗板はフィンガーシェーバーによってフィンガージョイントを加工し、接着して必要な長さにする。 The rough plate is processed by finger joint with a finger shaver and bonded to the required length.
板材は例えば木実はぎによって幅方向に接合してフローリング板に使用することができ、又板材を厚み方向に接着して集成材の用途にも利用できる。 The plate material can be used in a flooring plate by joining it in the width direction with, for example, tree nuts, and can also be used for laminated wood applications by bonding the plate material in the thickness direction.
そこで、本発明に係る板材の製造方法は、集成材又は幅はぎ材を製造するにあたり、コナラ又はクヌギの幹から直材を切り出す工程と、直材から仕上げ幅及び仕上げ厚さよりも大きな粗板を製材する工程と、粗板を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１２％を超え２０％以下の範囲内の含水率となるまで低温乾燥する工程と、低温乾燥済みの粗板を仕上げ幅及び仕上げ厚さより大きな素板材に粗仕上げする工程と、粗仕上げ済みの素板材を遮光防湿シートで覆って養生する工程と、養生された素板材を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１２％以下の含水率になるまで低温再乾燥する工程と、低温再乾燥済みの素板材を仕上げ幅及び仕上げ厚みの集成材又は幅はぎ材に仕上げる工程と、を備えたことを特徴とする。 Therefore, in the production method of the plate material according to the present invention, in producing the laminated material or the width strip material, a step of cutting out the direct material from the trunk of the oak or kunugi, and a rough plate larger than the finishing width and the finishing thickness from the direct material. A step of lumbering, a step of low-temperature drying the rough plate at a temperature in the range of 35 ° C. to 60 ° C. until the moisture content is in the range of more than 12% and 20% or less; Rough finishing to a base material larger than the finishing width and finish thickness, covering the rough finished base material with a light-proof moisture-proof sheet, curing, and curing the base material from 35 ° C to 60 ° C A step of low-temperature re-drying until a moisture content of 12% or less at a temperature within the range, and a step of finishing the low-temperature re-dried base plate material into a finished width and finished thickness of laminated material or width strip material It is characterized by.
以下、本発明を図面に示す具体例に基づいて詳細に説明する。図１は本発明に係る板材の製造方法の好ましい実施形態を示す。本例の方法によって板材を製造する場合、図１の工程１に示されるように、まずコナラ又はクヌギを伐採する。末口２８ｃｍ以上の幹を曲がり部で切って直材とする。２ｍ〜４ｍで造材とする。 Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. FIG. 1 shows a preferred embodiment of a method for producing a plate material according to the present invention. When manufacturing a board | plate material with the method of this example, as shown in the process 1 of FIG. Cut the trunk at the end of 28cm or more at the bend to make a direct material. The lumber is made from 2 m to 4 m.
次に、図１の工程２に示されるように、粗板の製材を行う。帯鋸台車とテーブルソーによって仕上がり幅よりも＋２０ｍｍ、仕上がり厚みよりも＋５ｍｍ以上に製材する。辺材、かびやシミや虫食いがあるものはチップにする。製材した後は速やかに「べた積」をし、かびの侵入を防ぐ。また、反りや捩じれがでないように、直射日光を避け、風雨にあてないようにする。 Next, as shown in step 2 of FIG. With a band saw carriage and a table saw, the lumber is sawed to + 20mm from the finished width and + 5mm from the finished thickness. Chips with sapwood, mold, stains, and worms. Immediately after lumbering, “solid” is applied to prevent mold from entering. Also, avoid direct sunlight and avoid being exposed to wind and rain to avoid warping or twisting.
次の図１の工程３では人工乾燥を行う。低温乾燥機内にて２４ｍｍ以上の厚みの桟木を６０ｃｍピッチ以下で入れ、幅方向には１ｃｍ以上の隙間をあけて粗板を桟積みにし、３５°Ｃ〜６０°Ｃの範囲内の温度で１０％を超え２０％以下の範囲内の含水率になるまで低温乾燥する。乾燥時間は粗板の含水率によって変動する。粗板の含水率が多ければ長い時間を必要とする。 In the next step 3 of FIG. 1, artificial drying is performed. In a low-temperature dryer, a slab with a thickness of 24 mm or more is put at a pitch of 60 cm or less, and a rough board is stacked with a gap of 1 cm or more in the width direction, and the temperature is within a range of 35 ° C. to 60 ° C. Dry at low temperature until the water content is in the range of more than 20% and not more than 20%. The drying time varies depending on the moisture content of the rough plate. If the moisture content of the rough plate is high, a long time is required.
次に、図１の工程４に示されるように、低温乾燥済みの粗板の欠点除去を行う。まず、仕上がり幅よりも＋１０ｍｍ、仕上がり厚みよりも＋４ｍｍとなるように、荒かんなをかける。その後、虫食い、割れ、かび、曲がり、折れ節などの欠点をカットソーにて取り除き、素板材とする。その際、１ユニットが４０ｃｍ以上になるようにする。 Next, as shown in Step 4 of FIG. 1, the defect removal of the low-temperature dried rough plate is performed. First, roughing is applied so that the finished width is +10 mm and the finished thickness is +4 mm. Thereafter, defects such as worm-eaten, cracks, mold, bends, and bent nodes are removed with a cut-and-sew, and a base plate material is obtained. At that time, 1 unit should be 40 cm or more.
得られた素板材は図１の工程５に示されるフィンガー加工を行う。フィンガー加工はフィンガーシェーバーを使用し、素板材１０Ａ、１０Ｂの対向する端面に図２の（ｂ）に示されるようにフィンガー１０Ｃを形成する。フィンガー加工が済むと、接着剤、例えば水性塩化ビニル系接着剤にて素板材１０Ａ、１０Ｂを長手方向に接着した後、必要な長さに切り揃える。接着の際、ピンホールができないように調整した圧力でプレスする。 The obtained base material is subjected to finger processing shown in step 5 of FIG. For finger processing, a finger shaver is used, and the fingers 10C are formed on the opposing end surfaces of the base plate materials 10A and 10B as shown in FIG. When the finger processing is completed, the base plate materials 10A and 10B are bonded in the longitudinal direction with an adhesive, for example, an aqueous vinyl chloride-based adhesive, and then trimmed to a required length. When bonding, press with pressure adjusted so that pinholes are not formed.
次に、図１の工程６に示されるように、保管・養生を行う。２４ｍｍ以上の厚みの桟木を６０ｃｍピッチ以下で入れて桟積みし、湿気を吸わないように遮光防湿シート、例えばポリシートをかぶせて保管養生する。この養生によって素板材の含有水分が素板材の全体に均一となる。保管・養生の時間は製品の受注があるまでであるが、品質の安定性のためには長期間の保管・養生が好ましい。 Next, as shown in step 6 of FIG. 1, storage and curing are performed. A pedestal having a thickness of 24 mm or more is put at a pitch of 60 cm or less and stacked and covered with a light-proof moisture-proof sheet such as a poly sheet so as not to absorb moisture. By this curing, the moisture content of the base material becomes uniform throughout the base material. The storage / curing time is until a product is ordered, but long-term storage / curing is preferred for quality stability.
受注があると、図１の工程７に示される再乾燥を行う。低温乾燥機内にて２４ｍｍ以上の厚みの桟木を６０ｃｍピッチ以下で入れ、幅方向には１ｃｍ以上の隙間をあけて粗板を桟積みにし、３５°Ｃ〜６０°Ｃの範囲内の温度で１０％以下の含水率になるまで低温再乾燥する。これによって反りや捩じれの少ない安定した品質の素板材が得られる。 When an order is received, the re-drying shown in step 7 of FIG. 1 is performed. In a low-temperature dryer, a slab with a thickness of 24 mm or more is put at a pitch of 60 cm or less, and a rough board is stacked with a gap of 1 cm or more in the width direction, and the temperature is within a range of 35 ° C. to 60 ° C. Re-dry at low temperature until water content is less than 10%. As a result, a stable quality base material with less warping and twisting can be obtained.
こうして素板材の低温再乾燥が済むと、図１の工程８に示されるように、仕上げ加工を行って板材を製造する。すなわち、モルダーを用いて木実加工を行い、素板材１０の一方の側面にさね１０Ｄ、他方の側面に溝１０Ｅを形成するとともに、ダブルエンドテノーナーにてエンドマッチ加工を施し、節や割れなどをパテと接着剤で補修し、ワイドサンダーにて♯２４０の粗さに仕上げる。
When the low-temperature re-drying of the base plate material is completed in this way, as shown in Step 8 of FIG. 1, finishing is performed to manufacture the plate material. In other words, the wood is machined using a molder, and a
この板材にロールコーターで均等に天然系塗料を塗布し、十分に乾燥させると、製品のフローリング材が得られる。塗布回数は塗料の仕様書による。最後に、空気を吸わないように、フローリング材を遮光不通気性の袋、例えばポリエチレン袋に入れて密封して輸送する。 When a natural coating material is evenly applied to the plate material with a roll coater and sufficiently dried, a product flooring material is obtained. The number of applications depends on the paint specifications. Finally, the flooring material is sealed and transported in a light-shielding and impermeable bag, for example, a polyethylene bag, so as not to inhale air.
以上はフローリング材の製造方法であったが、集成材や幅はぎ材を製造する場合、低温再乾燥（工程７）まではフローリング材の場合と同様である。ただし、低温再乾燥は含水率１２％以下までとする。低温再乾燥が済むと、事前加工を行う。つまり、モルダーを用い、幅はぎ材は直材加工を行い、積層材は引き割り加工を行う。 The above is the manufacturing method of a flooring material, but when manufacturing a laminated material and a width | variety strip material, it is the same as that of the case of a flooring material until low temperature re-drying (process 7). However, low-temperature re-drying is limited to a moisture content of 12% or less. After low temperature re-drying, pre-processing is performed. That is, using a molder, the width strip material is processed directly, and the laminated material is split.
その後、プレス機にかけ、接着剤、例えば水性塩化ビニル系接着剤にて接着し、必要寸法に成型し、プレナーで仕上げ寸法よりも０．５ｍｍ大きくかんながけをし、ワイドサンダーで♯２４０の粗さに仕上げ、幅はぎ材や図３に示される集成材２０を製造し、遮光不通気性の袋、例えばポリエチレン袋に入れて密封して輸送する。
After that, it is put on a press machine, glued with an adhesive such as an aqueous vinyl chloride adhesive, molded to the required size, and finished with a planer that is 0.5 mm larger than the finished dimension, and a # 240 roughness with a wide sander. After finishing, the stripping material and the
１０ 素板材
２０ 集成材
10
Claims (2)
コナラ又はクヌギの幹から直材を切り出す工程と、
直材から仕上げ幅及び仕上げ厚さよりも大きな粗板を製材する工程と、
粗板を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１０％を超え２０％以下の範囲内の含水率となるまで低温乾燥する工程と、
低温乾燥済みの粗板を仕上げ幅及び仕上げ厚さより大きな素板材に粗仕上げする工程と、
粗仕上げ済みの素板材を遮光防湿シートで覆って養生する工程と、
養生された素板材を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１０％以下の含水率になるまで低温再乾燥する工程と、
低温再乾燥済みの素板材を仕上げ幅及び仕上げ厚みのフローリング材に仕上げる工程と、を備えたことを特徴とする板材の製造方法。 In producing flooring materials,
Cutting out a direct material from the trunk of konara or kunugi;
The process of sawing a rough plate larger than the finish width and finish thickness from the direct material,
A step of low-temperature drying the rough plate at a temperature in the range of 35 ° C. or more and 60 ° C. or less until the moisture content is in the range of more than 10% and 20% or less;
Rough finishing the low-temperature-dried rough board into a base material larger than the finishing width and finishing thickness;
Covering the rough-finished base material with a light-proof moisture-proof sheet and curing,
A step of re-drying the cured base material at a temperature in the range of 35 ° C. or more and 60 ° C. or less until a moisture content of 10% or less is obtained;
And a step of finishing the low-temperature re-dried base plate material into a flooring material having a finished width and a finished thickness.
コナラ又はクヌギの幹から直材を切り出す工程と、
直材から仕上げ幅及び仕上げ厚さよりも大きな粗板を製材する工程と、
粗板を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１２％を超え２０％以下の範囲内の含水率となるまで低温乾燥する工程と、
低温乾燥済みの粗板を仕上げ幅及び仕上げ厚さより大きな素板材に粗仕上げする工程と、
粗仕上げ済みの素板材を遮光防湿シートで覆って養生する工程と、
養生された素板材を３５°Ｃ以上６０°Ｃ以下の範囲内の温度で１２％以下の含水率になるまで低温再乾燥する工程と、
低温再乾燥済みの素板材を仕上げ幅及び仕上げ厚みの集成材又は幅はぎ材に仕上げる工程と、
を備えたことを特徴とする板材の製造方法。
In manufacturing laminated or width strips,
Cutting out a direct material from the trunk of konara or kunugi;
The process of sawing a rough plate larger than the finish width and finish thickness from the direct material,
A step of low-temperature drying the rough plate at a temperature in the range of 35 ° C. or more and 60 ° C. or less until the moisture content is in the range of more than 12% and 20% or less;
Rough finishing the low-temperature-dried rough board into a base material larger than the finishing width and finishing thickness;
Covering the rough-finished base material with a light-proof moisture-proof sheet and curing,
A step of re-drying the cured base material at a low temperature until a moisture content of 12% or less at a temperature in the range of 35 ° C. or more and 60 ° C. or less;
Finishing the low-temperature re-dried base material into a finished width or finished thickness laminated or stripped material,
A method for producing a plate material, comprising:
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| US4182048A (en) * | 1978-02-21 | 1980-01-08 | U.S. Natural Resources, Inc. | Method of drying lumber |
| JPS58179602A (en) * | 1982-04-14 | 1983-10-20 | 株式会社甲州屋 | Warehouse for taking custody of wood |
| JP2516450Y2 (en) * | 1993-04-05 | 1996-11-06 | 有限会社フジカンソー | Wood dryer |
| JP2607564Y2 (en) * | 1993-09-14 | 2001-11-12 | 段谷産業株式会社 | Floorboard |
| JPH09318251A (en) * | 1996-05-27 | 1997-12-12 | Hakusan Seisakusho:Kk | Lumber drier |
| JP2003170405A (en) * | 2001-12-05 | 2003-06-17 | Kitosugi Shuseizai Kako Kyodo Kumiai | Method and apparatus for drying by steam heating of lumber |
| JP2009184228A (en) * | 2008-02-06 | 2009-08-20 | Try Wood:Kk | Drying method for lumber |
| JP5288873B2 (en) * | 2008-05-02 | 2013-09-11 | 独立行政法人森林総合研究所 | Method for measuring moisture in wood |
| JP4199824B1 (en) * | 2008-06-10 | 2008-12-24 | 株式会社コシイプレザービング | Method for producing modified wood |
| CN101628440B (en) * | 2009-08-07 | 2011-02-09 | 广东省宜华木业股份有限公司 | Production method of weather-proof multilayer composite wood floor |
| JP4754027B1 (en) * | 2010-05-27 | 2011-08-24 | 貫一 福井 | Manufacturing method of cedar medium grain laminated lumber |
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