JPS60145802A - 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】 〔技術分野〕 この発明は化粧単板の製造方法に関するものである。[Detailed description of the invention] 〔Technical field〕 This invention relates to a method for manufacturing decorative veneers.

〔背景技術〕[Background technology]

従来の化粧単板の製造方法は、ロータリーまたはスライ
ス単板の複数枚を接着剤を介して積層し圧締接着して集
成フリッチを得、これを所定方向からスライスして板面
に天然木に近似した木目模様を表現した化粧単板を得る
ものであった。The conventional manufacturing method for decorative veneers is to laminate multiple pieces of rotary or sliced veneer using an adhesive and press-bond them to obtain a laminated flitch, which is then sliced in a predetermined direction to create a natural wood surface on the board surface. The objective was to obtain a decorative veneer that expressed an approximate wood grain pattern.

前記素材単板の圧締接着には、多列成形型を使−用する
。このものはフリッチをスライスすると木目模様が多列
に並設された化粧単板が得られる。A multi-row mold is used to press and bond the veneer material. When this flitch is sliced, a decorative veneer with multiple rows of wood grain patterns is obtained.

ところが、多列成形型に厚みの均一な素材単板を積層し
た場合は、圧締時に圧力ばらつきが大きく、接着不良を
生じる原因となっていた。このため、圧力ばらつきに対
応して素材単板の厚みに変化をもたせることは非常に回
帰であるし限界がある。同様の問題は小曲率半径の圧接
面を有する成形型にもある。However, when veneers of uniform thickness are laminated in a multi-row mold, there is a large variation in pressure during pressing, which causes poor adhesion. For this reason, changing the thickness of the veneer material in response to pressure variations is extremely regressive and has its limits. A similar problem exists with molds having pressure contact surfaces with a small radius of curvature.

また、従来の化粧単板の製造方法では、素材単板は均一
に春−材部色に染色されるため、天然木にみられる春材
部の色ばらつきがなく、天然感に劣ったものであった。In addition, in the conventional manufacturing method for decorative veneers, the material veneer is uniformly dyed in the color of the spring wood, so there is no color variation in the spring wood that is seen in natural wood, and the material is less natural. there were.

このため、単板染色時に濃淡をつけるなどの方法が提案
されているが、手間がかかるという問題があった。For this reason, methods have been proposed in which shading is applied during dyeing of the veneer, but this method is time-consuming.

〔発明の目的〕[Purpose of the invention]

この発明は多列成形型等を用いて成形時の接着不良を低
減させ、しかも春材部に色ばらつきを表現した天然感に
すぐれた化粧単板の製造方法を提供することを目的とす
る。An object of the present invention is to provide a method for manufacturing a decorative veneer that uses a multi-row mold or the like to reduce adhesion failure during molding, and that also expresses color variation in the spring material and has an excellent natural feel.

〔発明の開示〕[Disclosure of the invention]

この発明の化粧単板の製造方法は、素材単板の両面をそ
れぞれ凹凸プレスし、ついで前記素材単板の複数枚を接
着剤を介して積層し成形型で圧締接着してフリッチを得
、これをスライスすることを特徴とするものである。The method for manufacturing a decorative veneer of the present invention includes pressing both sides of a material veneer into irregularities, then laminating a plurality of the material veneers via an adhesive and press-bonding them with a mold to obtain a flitch. This is characterized by slicing it.

第１図および第２図はそれぞれこの発明の製造方法を示
す工程図であり、第１図は素材単板を加圧プレス後、染
色し、ついで成形してフリッチを得るものである。また
、第２図は素材単板を染色後、加圧プレスし、ついで成
形してフリッチを得るものである。FIG. 1 and FIG. 2 are process diagrams showing the manufacturing method of the present invention, respectively, and FIG. 1 shows a material veneer being pressed under pressure, dyed, and then molded to obtain a flitch. Moreover, FIG. 2 shows a material veneer that is dyed, pressed under pressure, and then molded to obtain a flitch.

これら第１図および第２図の各工程の詳細を第３図（Ａ
ｔないしくＥｌに示す。すなわち、素材単板１番染色後
または染色前に一対のプレスロール２　”　ｔ２ｂ間を
通して加圧プレスする。各プレスロール２ａ、２ｂの外
周面には第４図に示すように微小な凹凸が形成されてい
る。加圧プレスした素材単板１は、ついで第３図（Ｃ１
に示すように多列成形型３内に接着剤を介して積層され
、圧締接層して成形し同図（Ｄｌに示すような７リツチ
４を得る。このフリッチ４をスライスして（スライス方
向を二点鎖線で示す）、同図（Ｅｌにボすように木目模
様が多列に並設された化粧単板５を得る。The details of each process in Figures 1 and 2 are shown in Figure 3 (A
It is shown in t or El. That is, after or before dyeing the material veneer No. 1, it is pressed under pressure through a pair of press rolls 2'' t2b.Minute irregularities are formed on the outer circumferential surface of each press roll 2a, 2b as shown in Fig. 4. The pressure-pressed material veneer 1 is then shown in Figure 3 (C1
As shown in the figure, the flitches 4 are laminated with an adhesive in a multi-row mold 3 and molded by pressing layers to obtain a 7-rich flitch 4 as shown in the same figure (Dl).This flitch 4 is sliced. A decorative veneer 5 is obtained in which the wood grain pattern is arranged in multiple rows in such a way that the direction is shown by a two-dot chain line) and the same figure (El).

このように、素材単板１の両面に一対のプレスロールで
凹凸を付与するので、単板１の圧縮ヤング率が低下し、
多列成形型３の複雑な圧接面に沿いやすくなって圧力ば
らつきがなくなシ、接着不良が低減される。その際、片
１面にのみ凹凸が成形され、他面が７”ｊットなプレス
ロールを用いた場合には、単板の成形型への沿いが充分
でなく、成形時に割れや接着不良が生じるおそれがある
。In this way, since the unevenness is imparted to both sides of the material veneer 1 by a pair of press rolls, the compressive Young's modulus of the veneer 1 is reduced,
It becomes easier to follow the complicated pressure contact surface of the multi-row mold 3, eliminating pressure variations and reducing adhesion defects. At that time, if a press roll with unevenness formed on only one side and a 7" cut on the other side is used, the veneer will not fit well into the mold, resulting in cracks and poor adhesion during molding. may occur.

また、高含水量の素材単板１を一対のプレスロー／Ｉ／
２ａ、２ｂ間に１出すことによシ、プレス両面に凹凸が
あるため、加圧力の分布によシ単板間の水分移行が単板
両面でスムーズに行なわれ、その結果、含水率を均一に
かつかなシの低含水率にまで容易に下げることができる
。このため、従来のように加熱、真空、遠心操作等の水
分除去装置を用いずに、安価な設備で均一に低含水率単
板を得ることができる。また、前述のように片面にのみ
凹凸が形成されたプレスによって加圧した場合は、フラ
ット面側の含水率が高く、不均一になり、含水率も４０
〜５０％程度の低下が限度である。In addition, a pair of press rows/I/
By applying 1 between 2a and 2b, since there are unevenness on both sides of the press, the moisture transfer between the veneers is carried out smoothly on both sides of the veneer due to the distribution of pressure, and as a result, the moisture content is uniform. The water content can be easily lowered to the low water content of sensitive Kana. Therefore, it is possible to uniformly obtain a low moisture content veneer using inexpensive equipment without using conventional moisture removal devices such as heating, vacuum, and centrifugation. In addition, when pressure is applied using a press with unevenness formed on only one side as described above, the moisture content on the flat side is high and uneven, and the moisture content is 40%.
The limit is a decrease of about 50%.

さらに、染色後の素材単板を加圧プレスして凹凸を付与
した場合、素材単板表面の凹部での染料が隣接する凸部
へ移行し、単板両面の凸部が濃色にま−た凹部が淡色と
なり、春材部の色ばらつきを表現することができる。一
方、素材単板を加圧プレス後に染色する場合も、単板の
凹部形成部位は高密度となっているので染料の浸透が抑
制され、凸部形成部位と比較して染料の浸透が少なくな
り、色の濃淡ができる。その際、単板両面の全面にわた
って微小な凹凸を付与することができ、また単板間の凹
凸形状の組合せによっても各種のばらつきをもたせるこ
とができるため、春材部での種々な色ばらつきが表現さ
れ、天然感が著しく向上する。Furthermore, when the material veneer is pressure-pressed after dyeing to give unevenness, the dye in the depressions on the surface of the material veneer transfers to the adjacent convexities, and the convexities on both sides of the veneer become dark colored. The concave portions are light-colored, making it possible to express color variations in the spring wood. On the other hand, when dyeing a material veneer after pressure pressing, the penetration of the dye is suppressed because the concave portions of the veneer are highly dense, and the penetration of the dye is reduced compared to the convex portions. , you can create shades of color. At that time, minute irregularities can be applied to the entire surface of both sides of the veneer, and various variations can be created by combining the irregularities between the veneers, so various color variations in the spring material can be reduced. expression, and the natural feel is significantly improved.

つぎに、実施例をあげて説明する。Next, examples will be given and explained.

実施例：　厚さ１．０　ｍの南洋材（シナ）単板（含水
率１００％）を染色浴に浸漬して春材部色に染色した。Example: A 1.0 m thick South Sea wood (China) veneer (moisture content 100%) was immersed in a dye bath and dyed to a spring wood color.

ついで、第３図（Ｂｌに示す一対のプレスロール間に単
板を通して加圧プレスし、表面に凹凸を形成した。各プ
レスロールは直径４００　ｒｒａｎで、ロール間の間隙
は０．１　ｔｍとして室温下で単板を１０Ｖ分の速度で
ロール間を通した。ローμ表面の凹凸は第４因に示すＬ
が２．０ｍｎ５Ｈが０．５笥である。Next, the veneer was passed between a pair of press rolls shown in Figure 3 (Bl) and pressed under pressure to form unevenness on the surface. Below, the veneer was passed between the rolls at a speed of 10V.The unevenness of the low μ surface is due to L shown in the fourth factor.
is 2.0mn5H is 0.5m.

得られた単板は含水率が２５チに低減されていた。つい
で、この単板の複数枚を乾式接着剤を介して積層し第３
図に示す多列取り成形型で圧締接着した。この成形型は
？４３図に示すａ、ｂおよびＣの曲率半径がそれぞれ２
００　ｒｒｒｍ　＋　１００　ｙｎｍ　ｅ　５００　ｒ
ａｎである。接着剤塗布量は１０８．９　ｆ／ｌｒ？　
（１０ｆ／尺）である。The moisture content of the resulting veneer was reduced to 25%. Next, a plurality of these veneers are laminated using dry adhesive to form a third layer.
Pressure bonding was performed using the multi-row mold shown in the figure. What is this mold? The radii of curvature of a, b and C shown in Figure 43 are each 2
00 rrrm + 100 ynm e 500 r
It is an. The amount of adhesive applied is 108.9 f/lr?
(10 f/shaku).

このようにして得たフリッチを所定方向からスライスし
て厚さ０．３簡の化粧単板を得た。このものは成形時の
接着不良がなく、また春材部には春材部色の色ばらつき
が表現され、きわめて天然感に富むものであった。The flitch thus obtained was sliced from a predetermined direction to obtain a decorative veneer with a thickness of 0.3 pieces. This product had no adhesion defects during molding, and the color variation of the spring material was expressed in the spring material, giving it an extremely natural look.

また、前記多列Ｊｔ１２シ成形型に代えて圧接面が小曲
率の成形型を用いた場合にも、同様の結果が得られた。Similar results were also obtained when a mold with a pressure contact surface of a small curvature was used instead of the multi-row Jt12 mold.

つぎに、集中導管部（孔開部）を表現した化粧単板の製
造方法を説明する。すなわち、この化粧単板の製造方法
は、第５図（ＡｔないしくＥｌに示すように、素材単板
６（ロータリーまたはスライス単板）を圧接面が凹凸に
形成された上型７とフラット面の下型８とで加熱加圧し
て単板表面に導管部表現用の凹凸を形成し、ついでその
複数枚を接着剤を介して積層し成形型９で圧締接着して
フリッチ１０を得、これをスライスして板面に集中導管
部１１が表現された化粧単板１２を得るにあたり、前記
上型７に高温度域Ａと低温度域Ｂとを交互に並設して単
板６表面に形成した凹凸の深さにばらつきを与えたもの
である。Next, a method for manufacturing a decorative veneer expressing a concentrated conduit section (hole opening section) will be explained. That is, the method for manufacturing this decorative veneer is as shown in FIG. The flitch 10 is obtained by heating and pressing with a lower die 8 to form irregularities for expressing the conduit portion on the surface of the veneer, and then laminating the plurality of veneers with an adhesive and bonding them by pressure with a forming die 9. When slicing this to obtain a decorative veneer 12 with a concentrated conduit portion 11 expressed on the plate surface, high temperature areas A and low temperature areas B are alternately arranged in parallel on the upper mold 7, and the surface of the veneer 6 is The depth of the unevenness formed on the surface varies.

すなわち、一般に、型の表面温度が高いときは凹凸の付
与率が高く（すなわち、凹凸深さが同一のルス面では表
面温度が高いほど単板に形成される凹凸の深さが大きく
なる）、その結果、導管の長さが長くなるという事実か
ら、同一凹凸溝深さの上型７０表面温度を前述のように
変化させ、加圧後の単板６表面の凹凸深さにばらつきを
与え、これによって導管部の長さにばらつきのある天然
感に富む化粧単板１２を得ることができる。That is, in general, when the surface temperature of the mold is high, the rate of unevenness imparted is high (that is, on a Lux surface with the same depth of unevenness, the higher the surface temperature, the greater the depth of the unevenness formed on the veneer); As a result, due to the fact that the length of the conduit becomes longer, the surface temperature of the upper mold 70 of the same uneven groove depth is changed as described above, and the unevenness depth of the surface of the veneer 6 after pressurization is varied. As a result, it is possible to obtain a decorative veneer 12 that has a rich natural feel and has variations in the length of the conduit portions.

参考例：　厚さ１．０　ｖａｎの南洋材（シナ）単板を
染色浴で非孔開部色に染色した。ついで、第５図（Ｂｌ
に示す上型および下型で素材単板を５０Ｋｇ／ｃａで２
０秒間加熱加圧した。このとき上型の凹凸は第６図に示
すようにＬ′が０．８　ｍｎ　、　Ｈ’が０．３ｍｍで
ある。Reference example: A South Sea wood (China) veneer with a thickness of 1.0 van was dyed in a non-porous color using a dye bath. Next, Figure 5 (Bl
Using the upper and lower molds shown in Figure 2, the material veneer is produced at 50Kg/ca.
Heat and pressure was applied for 0 seconds. At this time, as shown in FIG. 6, the unevenness of the upper die is 0.8 mm in L' and 0.3 mm in H'.

そして上型は幅方向に１５ｍｍ間隔で２００℃の高温度
域と１００℃の低温度域とを交互に並設したものである
。The upper mold has high temperature regions of 200° C. and low temperature regions of 100° C. arranged side by side alternately at intervals of 15 mm in the width direction.

しかるのち、単板の複数枚を、接着剤を介して曲率半径
１０００１ｍの圧接面を有する一対の成形型で圧締接着
してフリッチを得、これをスライスして厚さ０．３閣の
化粧単板を得た。このものにはばらつきのある集中導管
部が表現されていた。After that, multiple pieces of veneer were pressed and bonded using an adhesive using a pair of molds with a pressure contact surface with a radius of curvature of 10,001 m to obtain a flitch, which was then sliced to form a decorative piece with a thickness of 0.3 mm. I got a veneer. This one showed a concentrated conduit section with variations.

〔発明の効果〕〔Effect of the invention〕

この発明によれば、成形時の接着不良が低減し、かつ化
粧単板の春材部に色ばらつきを表現することができ、天
然感が同上するという効果がある。According to this invention, adhesion defects during molding are reduced, color variations can be expressed in the spring material portion of the decorative veneer, and the natural look is achieved.

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

第１図および第２図はそれぞれこの発明の概要を示す工
程図、第３図は各工程の詳細を示す工程説明図、第４図
はブレスロール表面の拡大断面肉、第５図は集中導管部
を表現した化粧単板の製造方法を示す工程説明図、第６
図は上型の凹凸面の拡大断面図である。 １・・・素材単板、２・・・ロールプレス、３・・・多
列成形型、４・・・フリッチ、５・・・化粧単板１１１
ＦＪＪｉＬ　版　素　将　卑板 第１図　第２図 第４図 （Ｂ） Ｊ Ｈ′ 第６図Figures 1 and 2 are process diagrams showing the outline of this invention, Figure 3 is a process explanatory diagram showing details of each process, Figure 4 is an enlarged cross-sectional view of the press roll surface, and Figure 5 is a centralized conduit. Process explanatory diagram showing the manufacturing method of decorative veneer expressing the part, No. 6
The figure is an enlarged sectional view of the uneven surface of the upper die. 1... Material veneer, 2... Roll press, 3... Multi-row mold, 4... Flitch, 5... Decorative veneer 111
FJJiL version Soto General Base plate Figure 1 Figure 2 Figure 4 (B) J H' Figure 6

Claims (1)

【特許請求の範囲】[Claims] 素材単板の両面をそれぞれ凹凸プレスし、ついで前記素
材単板の複数枚を接着剤を介して積層し成形型で圧締接
着してフリッチを得、これをスライスすることを特徴と
する化粧単板の製造方法。A decorative unit characterized in that both sides of a material veneer are pressed with concavities and convexities respectively, and then a plurality of the material veneers are laminated with an adhesive, pressed and bonded with a mold to obtain a flitch, and this is sliced. Method of manufacturing the board.