JPS5979709A - Manufacture of thrust board - 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】 この発明は、化粧合板等の表面（・１として使用する突
板の製法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a veneer used as a surface of decorative plywood or the like.

丘来、スライスした木材単板を合成樹脂等の接着剤を介
し°Ｃ多数枚重ね合せ、これを金型匿て圧締変形１）−
シめ一体化したのち再びスライスして、もとの木材単板
の切断面を木目状に表出する突板（踏板）の製法は知ら
れている。Okurai stacks many sliced wood veneers at °C using adhesives such as synthetic resin, and presses and deforms them by placing them in a mold 1)-
There is a known method for manufacturing veneers (treadboards) in which the wood is integrated and then sliced again to expose the cut surface of the original wood veneer in the shape of a wood grain.

而して第１図の如く、相対向する凹曲面を形成」Ｊる金
！ｔ！Ｉ　（上型（１）と下型（２））間に木材単板（
４）を何の前加工もせず５０枚程度積層して圧締すると
、木組Ｈｔ板（４１に加わる圧力は第２図に示す如く上
型（１）側では、」二型（１）に沿った分布を示腰下型
（２）側では二連山の如き分布を示す。以下のグラフ番
こおいてＢ７７軸は金型の水平方向の位置を、細軸（ま
木材単板（４）に加１）る圧力のに昇値を示し、グラフ
中のに示す部分の［Ｅカを示す。かかるＩＦ力分布は圧
締する木材単板を１００枚程程度増やした揚台も同様で
ある。この場合の圧力分布゛を第３図に示す。As shown in Figure 1, opposing concave surfaces are formed. T! I (A wooden veneer (
When about 50 sheets of 4) are stacked and pressed together without any pre-processing, the pressure applied to the wooden Ht board (41) is as shown in Fig. The bottom mold (2) side shows a distribution like two mountains.In the graph number below, the B77 axis indicates the horizontal position of the mold, and 1) shows the increase in the pressure applied to The pressure distribution in this case is shown in Figure 3.

このように［を締する木材単板（４）の数を増やすと二
連山の如き［Ｆ力分布はグラフの如くより顕著にあられ
れると共に金型の両端部において、上型（１１側の部分
には圧力がほとんど加わらず積層した木材単板（４）を
接着接合するに十分な圧力を加えることができなくなる
。In this way, when the number of wood veneers (4) tightened is increased, the F force distribution becomes more pronounced as shown in the graph, and at both ends of the mold, the part on the upper mold (11 side) Almost no pressure is applied to the stack, making it impossible to apply enough pressure to adhesively bond the laminated wood veneers (4).

従来、かかる欠点を除去せんとして端部をあらかじめｔ
’Ｅ　ＩＡ＃　ｔ、た木材単板（４）を使用する方法か
おこなわれている。すでに圧縮しているので、もはや［
１：縮のため；こ犬きなＦＪ−力をこの部分に加えなく
ともよいという理由にもとづく。第４図はかかる加ＦＪ
：法を採用した場合の圧力分布状態を示すものである。Conventionally, in order to eliminate such defects, the ends were pre-tightened.
'E IA # t, a method using a wood veneer (4) is being used. Since it has already been compressed, it is no longer [
1: Due to shrinkage; This is based on the reason that there is no need to apply force to this part. Figure 4 shows the
: This shows the pressure distribution state when the method is adopted.

ｉ；１′旧）１じ２予め圧縮した木材単板（４）を１０
０枚わ！バ［庄イ１ｉ’＋　した場合ｊ−ｒ髪３図の如
＜　−Ｌ、型（１）側の圧力分布及び下型（２）側の１
（ミカ分布はともに金型面に沿ったかま（牙こ状となり
、」二型（１）側と下型（２）側のいずれにおいＣも圧
力分布がほぼ等しくなり好ましいが、−Ｌ　４ＶＪ、ｏ
　＋側においで両端部の圧力分布は下型（２）側のＩＦ
力分布と比較してオ１１１ｉめで低くなり積層したスラ
イス単板（４）を接合するに不十分な［１ニカとなる。i; 1' old) 1 piece 2 10 pieces of pre-compressed wood veneer (4)
0 pieces! When the pressure distribution on the mold (1) side and the pressure distribution on the lower mold (2) side are as shown in Figure 3,
(The pressure distribution is like a hook along the mold surface, and the pressure distribution on both the second mold (1) side and the bottom mold (2) side is almost the same, which is preferable, but -L 4VJ, o
On the + side, the pressure distribution at both ends is IF on the lower mold (2) side.
Compared to the force distribution, the force becomes low at 111i, and becomes 1 nick, which is insufficient to join the laminated sliced veneers (4).

而（−であらかじめ本手（単板（４）の端部圧縮を施こ
す場合に端ｒ）１り圧縮率をｉ＋、’ｉｌ整することに
より上記の欠点を除去できそうに思われたが、第７図の
如く木（」のヤング率は一般に匝縮田力によって急激な
変化を示すことからこの端部用縮率を調整することによ
って木材単板に加わる１Ｆ力を均一化することは不可能
であった。However, it seemed possible to eliminate the above drawback by adjusting the compression ratio i+, 'il in advance (when compressing the end of the veneer (4), the end r). , as shown in Figure 7, the Young's modulus of wood generally shows rapid changes due to shrinkage forces, so it is impossible to equalize the 1F force applied to the wood veneer by adjusting the shrinkage ratio for the ends. It was possible.

この発明は上記欠点を除去せんとするものであり、その
要旨とするところはスライスした木材単板を合成樹脂等
の接着剤を介して多数枚重ね合せ、これを金型にて圧締
変形ぜしめ一体化したのちふたたひスライスして突板と
する突板の製法において、金型を中央が下方に突出する
上型（１）と中央が下方に凹となる下型（２）から形成
し、上型（１）と下型（２）間に積層する木材単板（４
）の下側半分につき予じめその両端部を圧縮せしめてお
くことを特徴とする突板の製法である。This invention aims to eliminate the above-mentioned drawbacks, and its gist is to stack a large number of sliced wood veneers together using an adhesive such as synthetic resin, and then press and deform them using a mold. In a method for producing a veneer in which the veneer is made by slicing the veneer after tightening, the mold is formed from an upper mold (1) whose center protrudes downward and a lower mold (2) whose center is concave downward; Wood veneer (4) is laminated between the upper mold (1) and the lower mold (2).
) is a method for manufacturing a veneer characterized by compressing both ends of the lower half of the veneer in advance.

以下この発明を第５図に図示せる一実施例に基づいて説
明する。金型にて圧締変形せしめて一体化してのちふた
たびスライスして突板とする工程は従来のものと同様で
あるので省略するこの発明においては、上型（１）と下
型（２）間に端部圧縮単板（イ）を約５０枚積層すると
共にその上に何らの前処理をしないスライスした木材単
板（４）を約５０枚積層し、その上で圧締するのである
。The present invention will be explained below based on an embodiment shown in FIG. The process of pressing and deforming in a mold, integrating, and slicing again to form a veneer is the same as the conventional process, so it will be omitted. In this invention, there is a gap between the upper mold (1) and the lower mold (2). Approximately 50 end-compressed veneers (A) are laminated, and on top of this, approximately 50 sliced wood veneers (4) without any pretreatment are laminated and then pressed together.

而してこの発明による製法においては、座屈をノ１しや
ずシ柑−型（１）側の木材単板（４）はあらかじめ何ら
の重加］二を施こずことなく金型内に入れ、１ギ屈を生
じｊこくい下型（２）側の木材単板（イ）はあらがじめ
１１：、：１部を圧縮処理しているので、上型（１）側
の両端部及び゛ト型（２）側の両端部はいずれも同程１
ｗに圧力上ｔ？を示ｌ２、また下型（１）側も下型（２
）側もいずれも略値の等しいがまはこ型の圧力分布を示
ずので木祠甲４／Ｍｒ４１．　ｆ４’ｌ相互間を全面に
わたって接合するに十分な均一な１上刃を加えることが
容易におこなえるのである。Therefore, in the manufacturing method according to the present invention, the wood veneer (4) on the side of the cylindrical mold (1) is placed in the mold without applying any weight in advance to prevent buckling. The wood veneer (A) on the lower mold (2) side has been compressed in advance, so the upper mold (1) side has been compressed. Both ends and both ends of the square shape (2) side are both 1
Pressure on w? 12, and the lower mold (1) side is also lower mold (2
) sides do not show a puddle-shaped pressure distribution with approximately equal values, so the ratio is 4/Mr41. It is easy to add one upper blade that is uniform enough to join f4'l over the entire surface.

またこの発明による製法をとれば、下層の木材＃１を板
（４′）はすでに圧縮済みであるので、これをも圧＃Ｉ
ｒｉずろ１７．合に比して金型の締付りカも小さくてず
の、？ｉ力化もできるのである。Furthermore, if the manufacturing method according to the present invention is used, since the lower layer of wood #1 is already compressed, the board (4') is also compressed to #I.
rizuro17. The tightening force of the mold is also smaller compared to when the mold is closed. It can also be made i-powered.

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

第１］＼゛く１は従来例を示す側面図、第２図乃至第４
図Ｃ」圧力分布を示すグラフ、第５図はこの発明の２実
ｈ１；）例を示す側面図、第６図は圧力分布を示すグラ
フ、ｆｆ１ｆＴ　７　ｒｉ、１は庄カとヤング率の関係
を示すグラフＣある。 第１１４ 第３１」 第４１４ 第５０ ；ｔ；　６　ｍ 第７図 圧力（Ｋシ／ｃＭ２）1] Figure 1 is a side view showing the conventional example, Figures 2 to 4
Figure C'' is a graph showing the pressure distribution, Figure 5 is a side view showing an example of the 2nd example of this invention, Figure 6 is a graph showing the pressure distribution, ff1fT 7 ri, 1 is the relationship between Shoka and Young's modulus. There is a graph C that shows. 114th 31st'' 414th 50th; t; 6 m Figure 7 Pressure (Ksh/cM2)

Claims (1)

【特許請求の範囲】[Claims] （１）　　スライスした木＋：１単板を合成樹脂等の接
着剤を介して多数枚重ね合せ、こ才］を金型にて圧締？
（１□・形１７しめ一体化したのち再びスライスして突
板とｌ゛る突板の製法において、金型を中央が下方に突
出する上型（１）と中央が下方に凹となる下型（２）か
ら形成し、上型（１）と下型（２）間に積層する木材単
板（４１の下側乎分）こつき予めその両端部を王縮すし
めておくことを特徴とする突板の製法。(1) Sliced wood +: A number of veneers are stacked together using an adhesive such as synthetic resin, and then pressed together with a mold?
(1□・Shape 17 In the manufacturing method of veneer, which is made by tightening and integrating and then slicing it again to make a veneer, two molds are used: an upper mold (1) in which the center protrudes downward, and a lower mold (1) in which the center is concave downward. A veneer formed from 2) and laminated between the upper mold (1) and the lower mold (2), characterized in that the lower part of the wood veneer (41) is crimped at both ends in advance. manufacturing method.