JPS5922701A - Manufacture of aggregate veneer - Google Patents

Manufacture of aggregate veneer

Info

Publication number
JPS5922701A
JPS5922701A JP13406882A JP13406882A JPS5922701A JP S5922701 A JPS5922701 A JP S5922701A JP 13406882 A JP13406882 A JP 13406882A JP 13406882 A JP13406882 A JP 13406882A JP S5922701 A JPS5922701 A JP S5922701A
Authority
JP
Japan
Prior art keywords
veneer
veneers
composite
pressure
laminated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13406882A
Other languages
Japanese (ja)
Inventor
勝 横山
宮本 靖典
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP13406882A priority Critical patent/JPS5922701A/en
Publication of JPS5922701A publication Critical patent/JPS5922701A/en
Pending legal-status Critical Current

Links

Landscapes

  • Finished Plywoods (AREA)
  • Manufacture Of Wood Veneers (AREA)

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】 (イ)技術分野 この発明は低級原木から得られる単板を、単板の集成技
術を用いて、より高級な集成単板を製造する技術の分野
に属す声。
DETAILED DESCRIPTION OF THE INVENTION (a) Technical field This invention belongs to the field of technology for producing higher-grade laminated veneers using veneer lamination technology from veneers obtained from low-grade logs.

(ロ)従来技術 いわゆる集成単板は、原料単板を接着材を介在させつつ
積層すると共に、凹凸面を有する型盤に挾んで圧締し、
フリッチを作成し、つぎにこれをスライスすることによ
って製造していた。
(b) Prior art In the so-called laminated veneer, raw veneers are laminated with an adhesive interposed between them, and then sandwiched between molds having an uneven surface and pressed together.
It was manufactured by creating a flitch and then slicing it.

以上の場合使用する原料単板の厚みは略一定である。よ
ってその為凹凸面を有する型盤に挾んで圧締すると、圧
締圧が単板の部分により異なり、極端な場合、高圧部で
は単板の破壊が起り、低圧部では接着不良が発生した。
In the above case, the thickness of the raw material veneer used is approximately constant. Therefore, when clamping the veneer by clamping it between molds having an uneven surface, the clamping pressure differs depending on the part of the veneer, and in extreme cases, the veneer breaks in the high-pressure area, and adhesion failure occurs in the low-pressure area.

このような極端なトラブルが発生しない場合でも、パタ
ーンの変形などの生じることが多かった。
Even when such extreme troubles do not occur, pattern deformation often occurs.

たとえば、略樋のような凹面を有する下型盤、およびこ
れに対応する凸面を有する上型盤を使用してフリッチを
作成する場合、その両側では圧締圧が非常に高くなり、
単板の破壊が起り、一方中心部では単板に掛る圧が小さ
くなり単板の接着不良が発生するのである。これを第3
図によりさらに詳しく説明すると、凹凸面を有する型盤
6.6の中に積層した厚み一定の単板4(四回)は、下
型の法線方向に厚み一定になろうとするため、上型の凸
面8と異なった曲面9を示す。これが圧力分布の発生の
原因となるのである。そして接着不良、単板破壊、パタ
ーン崩れの原因(圧力差が大きいと成形後の内部の残留
応力でフリッチが変形することになりスライス後のパタ
ーンの乱れとなる)となっていたのである。
For example, when creating a flitch using a lower die plate with a concave surface similar to a gutter and an upper die plate with a corresponding convex surface, the clamping pressure will be very high on both sides.
This causes the veneer to break, and on the other hand, the pressure applied to the veneer decreases in the center, resulting in poor adhesion of the veneer. This is the third
To explain in more detail with the diagram, the veneer 4 (four times) of constant thickness laminated in the mold board 6.6 having an uneven surface tries to have a constant thickness in the normal direction of the lower mold, so the upper mold A convex surface 8 and a different curved surface 9 are shown. This is the cause of pressure distribution. This causes poor adhesion, veneer breakage, and pattern collapse (if the pressure difference is large, the flitch will deform due to internal residual stress after molding, resulting in pattern disturbance after slicing).

(ハ) 発明の目的 この発明は以上に述べたような、圧締圧のバラツキのな
いフリッチを作成する目的でなされた。
(c) Purpose of the Invention The present invention was made for the purpose of creating a flitch with uniform clamping pressure as described above.

(ニ) 発明の開示 この発明は使用する単板の、圧締圧の高い部分に、予め
他の単板を複合して使用することを特徴とする。
(d) Disclosure of the Invention The present invention is characterized in that the veneer used is previously combined with another veneer in the area where the pressing pressure is high.

以下実施例として示した図面に基づき説明する。第1図
はこの発明で使用する複合単板の要部斜視図を表す。こ
の図で1は原料単板、2はこの原料単板に複合する他の
単板、すなわち複合用単板、3は接着剤を示している。
An explanation will be given below based on drawings shown as examples. FIG. 1 shows a perspective view of the main parts of a composite veneer used in the present invention. In this figure, 1 is a raw material veneer, 2 is another veneer to be combined with this raw material veneer, that is, a composite veneer, and 3 is an adhesive.

ここで他の単Fj、2の幅ないし面積は予め凹凸面を有
する型盤の圧力分布を測定して必要なサイズを定める。
Here, the width or area of the other unit Fj, 2 is determined in advance by measuring the pressure distribution of a mold plate having an uneven surface and determining the necessary size.

またその複合位置も同様にして決定される。なお、複合
すべき他の単板の厚みは全部分において一定である必要
はなく、寧ろ可能ならば圧力分布に応した厚みの変化を
持たせてもよい。たとえば、第4図に示すように他の単
板2aのようにその端部の角を削り落してもよい。複合
のために使用する接着剤は木目表現に都合がよいように
、予め着色して使用するのが好ましい。なお複合用単板
2は予め原料単板に接着して、複合単板を作成してから
積層、圧締してもよく、積層時に原料単板1と複合用単
板2を交互に積んで同様な結果を得るようにしてもよい
Further, the composite position is determined in the same manner. It should be noted that the thickness of the other veneer to be composited does not need to be constant over the entire portion, but may vary depending on the pressure distribution if possible. For example, as shown in FIG. 4, the edges of the veneer 2a may be cut off like other veneers 2a. It is preferable that the adhesive used for the composite be colored in advance so that it is convenient for expressing the wood grain. Note that the composite veneer 2 may be bonded to the raw material veneer in advance to create a composite veneer, and then laminated and pressed, or the raw material veneer 1 and the composite veneer 2 may be stacked alternately during lamination. Similar results may be obtained.

第2図は、凹凸面を有する型盤5.5の間に前記複合単
板4を挾んで圧締する状態を示す断面図である。この場
合、各単板4の間には接着剤が介在せしめである。接着
剤は木目の表現上都合が良いように着色したものを用い
るのが良い。
FIG. 2 is a sectional view showing a state in which the composite veneer 4 is sandwiched and pressed between mold plates 5.5 having uneven surfaces. In this case, adhesive is interposed between each veneer 4. It is best to use adhesive that is colored to suit the expression of the wood grain.

以上のようにすると、複合単板を積層した状態でその上
面は上型の凸面と略同−曲面となりこれを圧締しても圧
力分布に差は生じない。このことは、いわゆる高圧縮ヤ
ング率材でも低圧部まで有効に圧力が印加できることを
意味している。
In the above manner, when the composite veneers are laminated, the upper surface thereof becomes a curved surface that is substantially the same as the convex surface of the upper mold, and even if the composite veneers are pressed together, no difference occurs in the pressure distribution. This means that even with a so-called high compression Young's modulus material, pressure can be effectively applied to the low pressure portion.

なお、前記のように圧力分布に差が生じないので、凹凸
面を有する型盤の曲面をよりきつくできるので従来不可
能であったパターンの表現が可能となった。さらに板目
を表現した場合、いわゆるショルダーを表現することが
出来、より自然感のある集成単板の製造が可能となった
In addition, since there is no difference in pressure distribution as described above, the curved surface of the mold plate having an uneven surface can be made tighter, making it possible to express patterns that were previously impossible. Furthermore, when expressing the grain, it is possible to express so-called shoulders, making it possible to produce laminated veneers with a more natural feel.

なお、以上において説明を省略した事項については従来
の技術がそのまま通用される。
It should be noted that the conventional technology can be applied as is for the matters whose explanations have been omitted above.

(ホ) 実施例 以下の内容で実施した。(e) Example It was conducted with the following contents.

原料単板として厚み1酊、幅200鰭のアガチス単板を
50枚用意した。複合用の他の単板として同樹種で厚み
Q、5+n、幅100鰭の単板を用意し、後者を前者の
中央に位置するようにして、接着剤を塗布して積層し、
凹凸面を有する型盤で圧締してフリッチ化した。この際
の型は上、下共正弦曲線形状を有する型で、端部の傾き
の角度が26.6°であり、成形圧は15kg/cnで
あった。 なお比較例として前記複合用単板を使用せず
に、その他の条件は前記と同様にして実施した。
As raw material veneers, 50 Agatis veneers with a thickness of 1 mm and a width of 200 fins were prepared. As other veneers for composite use, prepare veneers of the same tree species with a thickness of Q, 5+n and a width of 100 fins, place the latter in the center of the former, apply adhesive and laminate them.
It was pressed into a flitch using a mold plate with an uneven surface. The mold at this time had both upper and lower sinusoidal shapes, the angle of inclination of the end portion was 26.6°, and the molding pressure was 15 kg/cn. As a comparative example, the test was carried out under the same conditions as above without using the composite veneer.

複合用単板を使用した場合は圧力のバラツキが1σ値で
6. 2kg/ca、複合用単板を使用しない場合は2
.4 kg / cnlであった。
When using a composite veneer, the pressure variation is 1σ value 6. 2kg/ca, 2 if composite veneer is not used
.. It was 4 kg/cnl.

なお、前者の実施例の場合は木目にショルダ一部が発生
しより自然感が高まった。
In the case of the former example, some shoulders appeared in the wood grain, giving it a more natural feel.

この発明は、原料単板の凹凸面を有する型盤に挾んで圧
締する場合であって圧力分布の低い箇所に他の単板を複
合せしめると共に、かつ接着剤を介在させると共に、凹
凸面を有する型盤に挾んで圧締することを特徴とするの
で、以下のような効果が得られた。
This invention applies to the case where a raw material veneer is clamped by being clamped between a mold plate having an uneven surface, in which other veneers are composited in areas where the pressure distribution is low, and an adhesive is interposed, and the uneven surface is Since the method is characterized in that it is clamped by being clamped onto a mold plate, the following effects were obtained.

■ 圧力が一定になり、局部的な単板の破壊が生じなく
なった。
■ The pressure became constant and local veneer failure no longer occurred.

■ 圧力差が小さいため剪断応力ががかりにくく成形後
内部の残留応力によりフリッチが変形することがなくな
った。
■ Because the pressure difference is small, shear stress is less likely to occur, and the flitch is no longer deformed due to internal residual stress after molding.

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

第1図はこの発明で使用する複合単板の要部斜視図、第
2図はこの発明の実施する場合の凹凸面を有する型盤に
よる圧締の状態を表す略図、第3図は従来例を示す凹凸
面を有する型盤で圧締する状態を表す略図、第4図は複
合単板の他の実施例を示す断面図である。 1は原料単板 2は複合用の単板 4は複合単板 5.6は凹凸面を有する型盤 特許出願人   松下電工株式会社
Fig. 1 is a perspective view of the main parts of the composite veneer used in this invention, Fig. 2 is a schematic diagram showing the state of pressing by a mold plate having an uneven surface when implementing this invention, and Fig. 3 is a conventional example. FIG. 4 is a schematic diagram illustrating a state in which the composite veneer is pressed with a mold plate having an uneven surface, and FIG. 4 is a sectional view showing another embodiment of the composite veneer. 1 is a raw material veneer 2 is a composite veneer 4 is a composite veneer 5.6 is a molding board with an uneven surface Patent applicant Matsushita Electric Works Co., Ltd.

Claims (1)

【特許請求の範囲】[Claims] (1)原料単板を接着剤を介4’fさせつつ積層すると
共に、凹凸面を有する型盤6i挾んで圧締してフリッチ
を得て、つぎにこれをスライスすることにより集成単板
を製造する場合において、原料単板の、凹凸面を有する
型盤に挾んで圧締する場合に生じる圧力分布の低い箇所
に、予め他の単板を複合せしめると共に、かつ接着剤を
介在させると共に、フリッチ化することを特徴とする集
成単板の製法。
(1) Raw material veneers are laminated with adhesive interposed 4'f, pressed between mold plates 6i having uneven surfaces to obtain flitches, and then sliced to form laminated veneers. In the case of manufacturing, other veneers are composited in advance in areas where the pressure distribution is low when the raw veneer is clamped between mold plates having uneven surfaces, and an adhesive is interposed, A manufacturing method for laminated veneer that is characterized by flitching.
JP13406882A 1982-07-30 1982-07-30 Manufacture of aggregate veneer Pending JPS5922701A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13406882A JPS5922701A (en) 1982-07-30 1982-07-30 Manufacture of aggregate veneer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13406882A JPS5922701A (en) 1982-07-30 1982-07-30 Manufacture of aggregate veneer

Publications (1)

Publication Number Publication Date
JPS5922701A true JPS5922701A (en) 1984-02-06

Family

ID=15119620

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13406882A Pending JPS5922701A (en) 1982-07-30 1982-07-30 Manufacture of aggregate veneer

Country Status (1)

Country Link
JP (1) JPS5922701A (en)

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