JPS58188602A - Manufacture of decorative veneer - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明上化粧単板の製造方法に関すｂものである。[Detailed description of the invention] This invention relates to a method for manufacturing a decorative veneer.

従来の化粧単板の製造方法は、第１図に示すように、素
材単板１（１１１図（１））を讐着剤を介して複数枚積
層しく同図（ｂ）　’）　、これを凹凸ｍ２　、３Ｋ”
より圧接・接着して集成フリフナ４を得（同図（Ｃ））
、この集成フリッチ番をその積層面と交差する所定方向
よりナイフ５によりスライスして（同図（ｄ））、第１
図（・）に示す化粧単板６をＩＩ為。こうして形成した
化粧単板６の表１ｉＫｉｌわれる木目模様は、素材単板
１０切断面によ勤春材部が表現され、素材単板１間に介
装した濃き接着剤７の切断＃により夏材部が表現され為
。As shown in Fig. 1, the conventional method for manufacturing decorative veneers is to laminate a plurality of raw veneers 1 (Fig. 111 (1)) with adhesives in between (Fig. 111 (b) '), and then Unevenness m2, 3K”
By pressing and gluing, the assembled fringe 4 was obtained ((C) in the same figure).
, this assembled flitch number is sliced with a knife 5 from a predetermined direction intersecting the laminated surface (FIG. 5(d)), and the first
The decorative veneer 6 shown in the figure (-) is for II purposes. The wood grain pattern of the decorative veneer 6 formed in this way is expressed by the cutting surface of the material veneer 10, and the summer material is expressed by the cut # of the dark adhesive 7 interposed between the material veneers 1. Because the part is expressed.

ところが、第１．８ｉ１１　（ｂ）　Ｋ示すように、素
材単板ｌを平板状態で複数枚積層して凹凸ＷＩ２．３に
よ動圧締・湾曲するため、圧−途中の湾曲速度が各素材
単板ｌごとに異なって空気が素材単板ｌ相亙聞に閉じこ
められ、この空気によ勤素材単板１相互０＃着不良が生
じて、製品としてで自上った化粧単板６は、木目模様（
接着剤７０部分）Ｋ沿って分離しやすくなるという問題
を有していた。また、素材単板ｌを凹凸型２．３により
急激に湾曲させるため、素材単板ＩＫ無環な力が加わっ
て強度の弱い部分に割れを生じ、この割れが化粧単板６
の表ｍＫ亀裂８となって現われて製品価値を低下させる
という問題も有していた。However, as shown in No. 1.8i11 (b) K, since a plurality of single sheets of material l are stacked in a flat state and dynamically pressed and bent by unevenness WI2.3, the bending speed during pressing is different from that of each material. Different air is trapped between the material veneers 1 and 1, depending on the veneer 1, and this air causes poor adhesion between the material veneers 1 and 0#, and the decorative veneer 6 produced by itself as a product is , wood grain pattern (
Adhesive 70) had a problem in that it easily separated along K. In addition, since the material veneer 1 is sharply curved by the uneven mold 2.3, an uncircular force is applied to the material veneer IK, causing cracks in the weaker parts, and these cracks are caused by the decorative veneer 6.
There was also a problem in that surface mK cracks 8 appeared on the surface, reducing the product value.

したがって、この発明の目的は、木目模様に沿−た分離
や亀裂の発生を防止できて製品価値の高い化粧単板を得
ることがで自為化粧単板の製造方法を提供することであ
る。Therefore, an object of the present invention is to provide a method for manufacturing an artificial decorative veneer by which a decorative veneer with high product value can be obtained by preventing separation and cracking along the wood grain pattern.

この発明の概要を第２図を用いて説明する。すなわち、
この化粧単板の製造方法は、つぎに述べる順序で行なう
ものである。The outline of this invention will be explained using FIG. 2. That is,
This decorative veneer manufacturing method is carried out in the following order.

（１）　　木質素材単板９（第２図（１））を乾燥して
一次含水率を絶乾値５０〜−〇％程度にし、その素材単
板ｌの表面全体にノズｆｉ／１０等で水１１を塗布して
表面側の含水率を６０〜７０％程度とし、これを乾燥室
１２（第２図（ｂ）■で乾燥する。こうして、葉材単板
９０表裏面の含水率に差異を設けることにより、素材単
板９を幅方向へ湾曲させて湾曲単板９′（第２図（Ｃ）
）を得る。この場合、乾燥室１２内での乾燥は、湾曲単
板９′の表面側の含水率が４０〜５０％、裏面側の含水
率が３０〜４０％程度になるまで行なう。(1) Dry the wood veneer 9 (Fig. 2 (1)) to a primary moisture content of about 50% to -0% on an absolute dry basis, and then apply a nozzle such as fi/10 to the entire surface of the veneer l. Water 11 is applied to bring the moisture content on the front side to about 60 to 70%, and this is dried in the drying chamber 12 (Fig. 2 (b) ■).In this way, the moisture content on the front and back sides of the leaf veneer 90 differs. By providing this, the material veneer 9 is curved in the width direction to form a curved veneer 9' (Fig. 2 (C)
). In this case, drying in the drying chamber 12 is carried out until the moisture content on the front side of the curved veneer 9' reaches about 40 to 50%, and the moisture content on the back side reaches about 30 to 40%.

（２）　ついで上記湾曲単板９′を、第２図（ｄ）に示
すように接着剤塗布ロール１３間に通して単板９′の両
面に接着剤を塗布し、この単板９′を断面円弧状湾曲型
面をもつ凹！ｌＩ！１４上に複数枚積層する。この場合
、各単板９′の湾曲方向は、凹型１４の湾曲型面の湾曲
方向と同一方向に揃えて積層する。(2) Next, as shown in FIG. 2(d), the curved veneer 9' is passed between adhesive application rolls 13 to coat both sides of the veneer 9' with adhesive. Concave with a curved surface with an arcuate cross section! lI! A plurality of sheets are stacked on 14. In this case, the veneers 9' are laminated so that the curvature direction of each veneer 9' is aligned in the same direction as the curvature direction of the curved surface of the concave mold 14.

（３）こうして、積層した複数枚の湾曲単板９′を、第
２図（・）Ｋ示すように凹凸型１４．１５により圧接・
接着して集成フリッチ１６を得、以下従来例と同様の工
程で上記集成フリッチ１６をその積層面と交差する所定
方向よシスライスして化粧単板（図示省略）を得る。(3) As shown in FIG.
The flitch assembly 16 is obtained by bonding, and then the flitch assembly 16 is sliced in a predetermined direction intersecting the laminated surface in the same process as in the conventional example to obtain a decorative veneer (not shown).

このように、素材単板９を予め湾曲しておいて、その湾
曲単板９′を接着剤を介し複数枚積層して凹凸ａｌｌ　
４　、１５によシ、圧締・接着するようにしたため、圧
締途中においても各単板９′が相互に密接して単板９′
間に空電が閉じ込めるようなことはなくなシ、したがっ
て単板９′相互間の接着を確実に行なえて、化粧単板の
木目模様に沿った分離を防止できる。また、素材単板９
の湾曲は、その表裏面の含水率に差異を設けることによ
シ行なうため、素材単板９がゆっくシと自然に湾曲し、
湾曲途中において素材単板９に無理な力が加わることが
ないので単板９内での割れ発生を防止でき、したがって
化粧単板に上紀割れに帰因する亀裂の発生を防止できる
。In this way, the raw material veneer 9 is curved in advance, and a plurality of curved veneers 9' are laminated with an adhesive to form all the uneven surfaces.
4 and 15, the veneers 9' are closely connected to each other even during pressing, and the veneers 9'
There is no possibility that static electricity will be trapped between the veneers 9', and therefore the veneers 9' can be reliably bonded to each other, and separation of the decorative veneers along the wood grain pattern can be prevented. In addition, the material veneer 9
The curving is done by creating a difference in the moisture content on the front and back surfaces, so the material veneer 9 curves slowly and naturally.
Since no unreasonable force is applied to the material veneer 9 during the bending process, it is possible to prevent cracks from occurring within the veneer 9, and therefore to prevent the occurrence of cracks in the decorative veneer due to cracks.

実施例 素材単板二使用樹種ヲプフ ３００　ｍ　Ｘ　２４４０■Ｘ　ｌ、　Ｑ　ｓｗ１次含
水含水率０〜６０％（絶乾値） ２次含水率二上面（水打面）４０〜５０％（絶乾値） 下面　　　　　３０〜４０％（絶乾 値） 上記条件で、集成フリッチを形成したところ、接着不良
の割合は０％であった。すなわち単板相互間の接着が確
実になされ、化粧単板は、その木目模様に沿った分離を
確実に防止できるとともに、亀裂の発生も防止できた。Example material veneer 2 Wood species used: 300 m Value) Lower surface 30-40% (absolutely dry value) When an assembled flitch was formed under the above conditions, the rate of poor adhesion was 0%. In other words, the veneers were reliably bonded to each other, and the decorative veneers could be reliably prevented from separating along the wood grain pattern, and also prevented from cracking.

ち表みに、従来法により、素材単板の含水率が４０〜５
０％のもとて集成７リツチを形成したところ、接着不良
が３％星じた。By the way, according to the conventional method, the moisture content of the material veneer is 40 to 5.
When a 7-rich composite was formed using 0%, adhesion failure was 3%.

以上のように、この発明の化粧単板の製造方法は、素材
単板の表裏面の含水率に差異を設けることにより素材単
板を幅方向に湾曲させる素材単板湾曲工程と、湾曲した
素材単板を湾曲方向を同一方向に揃えた状しで接着剤を
介し複数枚積層しその湾曲方向と同一方向に湾曲した湾
曲型面をもつ凹凸型によシ圧締・接着して集成フリッチ
を得る集成フリフチ形成工程と、この集成フリッチをそ
の積層面と交差する所定方向よシスライスするスライス
工程とを含むため、化粧単板の木目模様に沿った分離や
亀裂の発生を防止できて製品価値の極めて高い化粧単板
を得ることができるという効果がある。As described above, the method for manufacturing a decorative veneer of the present invention includes a material veneer curving step in which the material veneer is curved in the width direction by providing a difference in moisture content on the front and back surfaces of the material veneer, and a material veneer curving step in which the material veneer is curved in the width direction A composite flitch is created by laminating multiple veneers with their curving directions aligned in the same direction using an adhesive, and then pressing and gluing them into a concave-convex mold with a curved surface curved in the same direction as the curving direction. This process includes a process of forming a flitch to obtain a laminated flitch, and a slicing process of slicing the flitch in a predetermined direction that intersects the laminated surface of the flitch, thereby preventing separation and cracking along the grain pattern of the decorative veneer and increasing product value. This has the effect of making it possible to obtain a highly decorative veneer.

【図面の簡単な説明】[Brief explanation of drawings]

第１図（相〜（・）は従来例の説明図、第２図（ａ）〜
（Ｃ）はこの発明の一実施例の説明図である。 ９・・・素材単板、９′・・・湾曲単板、１４・・・凹
型、１５・・・凸型、１６・・・集成フリッチ （ｅ）　　　　　　　　　　第　１　図（ｅ）　　　　
　第２図Figure 1 (phase~(・) is an explanatory diagram of the conventional example, Figure 2(a)~
(C) is an explanatory diagram of one embodiment of the present invention. 9...Material veneer, 9'...Curved veneer, 14...Concave type, 15...Convex type, 16...Glue flitch (e) Figure 1 (e)
Figure 2

Claims (1)

【特許請求の範囲】[Claims] 素材線板の表裏面の含水率に差異を殴けることＫより素
材単板を幅方向に湾曲させ為素材単板湾曲工程と、湾曲
した素材単板を湾曲方向を同一方向に揃えた状■で接着
剤を介し複数枚積層しその湾曲方向と同一方向に湾曲し
た湾曲型面をもつ凹凸ＷＫより圧締・接着して集成フリ
フチを得る集成フリッチ形成工程と、この集成フリッチ
をその積層面と交差する所定方向よりスライスするスラ
イス工程とを含む化粧単板の製造方法。To overcome the difference in moisture content between the front and back sides of the material wire board, the material veneer is curved in the width direction by the material veneer curving process, and the curved material veneer is aligned in the same direction ■ An assembly flitch forming process in which a composite flitch is obtained by laminating a plurality of flitches using an adhesive and pressing and bonding them from the uneven WK having a curved surface curved in the same direction as the curved direction; A method for manufacturing a decorative veneer, including a slicing step of slicing from intersecting predetermined directions.