JPS6133682B2 - - Google Patents
Info
- Publication number
- JPS6133682B2 JPS6133682B2 JP23071682A JP23071682A JPS6133682B2 JP S6133682 B2 JPS6133682 B2 JP S6133682B2 JP 23071682 A JP23071682 A JP 23071682A JP 23071682 A JP23071682 A JP 23071682A JP S6133682 B2 JPS6133682 B2 JP S6133682B2
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- decorative
- plate
- base plate
- adhesive
- 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.)
- Expired
Links
- 239000011120 plywood Substances 0.000 claims description 58
- 239000000853 adhesive Substances 0.000 claims description 14
- 230000001070 adhesive effect Effects 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 230000007935 neutral effect Effects 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 4
- 239000002023 wood Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 3
- 238000009408 flooring Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Finished Plywoods (AREA)
- Laminated Bodies (AREA)
Description
【発明の詳細な説明】
この発明は反りのない薄手の化粧ばり合板の製
造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing thin decorative plywood without warping.
壁材用、床材用などとして使用されている化粧
ばり合板は、合板台板の表面に化粧単板を接着一
体化したもので、３〜15mm厚位のものが多く市販
されている。このような化粧ばり合板のうち、特
に３mm厚または４mm厚位のいわゆる薄手のもの
は、表面側が凹となる上反り状態を呈するのが普
通である。 Decorative plywood, which is used for wall materials, flooring, etc., is made by bonding a decorative veneer to the surface of a plywood base plate, and is often commercially available with a thickness of 3 to 15 mm. Among such decorative plywood, so-called thin ones, especially those with a thickness of about 3 mm or 4 mm, usually exhibit an upwardly warped state in which the surface side is concave.
上記のような上反りが生じるのは、次のような
ことが原因であると考えられている。すなわち化
粧ばり合板の台板である合板は奇数枚の単板を接
着一体化したもので、例えば３プライ合板台板の
場合、表板と心板と裏板のうち表裏の単板を同一
厚みとなし、これら各単板を交互に繊維方向が直
交するように重ね合せている。このように形成す
ることにより、各単板の含水量の変化などに伴い
木材が膨脹あるいは収縮してもその反応が互いに
均衝することとなり、反りやねじれなどを生じに
くい合板台板が得られるというものである。 The above-mentioned warpage is thought to be caused by the following reasons. In other words, the plywood that is the baseboard of decorative plywood is made by gluing together an odd number of veneers.For example, in the case of a 3-ply plywood baseboard, the front and back veneers of the front, core, and back boards are the same thickness. These veneers are alternately stacked so that the fiber directions are perpendicular to each other. By forming it in this way, even if the wood expands or contracts due to changes in the moisture content of each veneer, the reactions will be balanced against each other, making it possible to obtain a plywood base plate that is less likely to warp or twist. That is what it is.
ところが上記合板台板に対しその片面に接着剤
を介して化粧単板を接着すると、この接着剤中の
水分などのため合板台板中、特にその表板の含水
量に変化をきたすこととなり、その影響で上記の
均衝が崩れてしまうためである。 However, when a decorative veneer is bonded to one side of the plywood base plate using an adhesive, moisture in the adhesive causes a change in the water content in the plywood base plate, especially in the top plate. This is because the above-mentioned equilibrium collapses due to this influence.
従来、化粧ばり合板を使用する場合、厚手のも
のは桟木や根太などに接着剤と釘を併用して固定
するため、多少反りがあつても施工上格別の支障
はなかつた。しかし薄手のものは、普通平滑な下
地材の上に接着剤や両面接着テープを用いて直貼
りすることが行なわれており、その場合反りがあ
ると周縁部が浮き上つてしまうので、施工に支障
が生じるものであつた。この場合でも周縁部を下
地材に押し付けるようにしながら施工すれば接着
が可能であるので、格別問題がないように思われ
るが、接着後においても、化粧ばり合板の周縁部
に対し元の状態に戻ろうとする上向きの力が作用
し続けることになるので、使用している間に接着
した化粧ばり合板の周縁部が下地材より剥離して
浮き上つてくることになる。そのため薄手の化粧
ばり合板については、できるだけ反りがないよう
につくる必要があつた。 Conventionally, when using decorative plywood, thicker pieces were fixed to beams or joists using a combination of adhesive and nails, so even if the plywood warped slightly, there was no particular problem during construction. However, thin products are usually attached directly onto a smooth base material using adhesive or double-sided adhesive tape, and in this case, if there is a warp, the edges will rise, making it difficult to install. This would have caused problems. Even in this case, gluing is possible if the peripheral edge is pressed against the base material, so there seems to be no particular problem. Since the upward force that tries to return continues to act, the periphery of the decorative plywood glued during use will peel off from the base material and rise up. Therefore, it was necessary to make thin decorative plywood so that it would not warp as much as possible.
一般に反りのない合板の場合、中立軸が心板の
中心を通り、その上側と下側の引張応力がつり合
つている状態であると考えることができる。した
がつて化粧ばり合板において反りをなくするため
には、合板台板に化粧単板を接着することによつ
て生ずる引張力がどれだけあるかを予測し、これ
につり合う引張力を反対側に生じさせればよい。
換言すれば化粧ばり合板の中心を中立軸が通るよ
うにすれば反りのない化粧ばり合板をつくること
ができることになる。 In general, in the case of unwarped plywood, the neutral axis passes through the center of the core plate, and the tensile stress on the upper and lower sides can be considered to be balanced. Therefore, in order to eliminate warping in decorative plywood, it is necessary to predict how much tensile force will be generated by gluing the decorative veneer to the plywood base plate, and then apply the equal tensile force to the opposite side. All you have to do is make it happen.
In other words, if the neutral axis passes through the center of the decorative plywood, it is possible to make decorative plywood without warping.
とこで本発明者は上記の点にかんがみ、種々研
究した結果、本発明を達成するに至つたものであ
る。すなわち本発明者は３プライ合板台板の裏板
の厚みを表板より大に形成して合板台板中におけ
る下側の引張応力が上側よりも大となるようにす
るとともに、さらに上記合板台板の裏面には和紙
を貼着し、その後和紙の表面に水を散布し、水分
の蒸発によつて生じる和紙の収縮力とにより、合
板台板に化粧単板を接着したことによつて生じる
引張力に対抗するようにし、中立軸が化粧ばり合
板の中心を通るようにして反りのない、または反
りがあつても表面側が凸となる下反りを多少呈す
る程度の化粧ばり合板が得られるようにするもの
である。 In view of the above points, the present inventor has conducted various studies and as a result has achieved the present invention. That is, the inventor of the present invention formed the back plate of the 3-ply plywood base plate to be thicker than the front plate so that the tensile stress on the lower side of the plywood base plate was greater than that on the upper side. This is caused by pasting Japanese paper on the back of the board, then spraying water on the surface of the Japanese paper, and using the shrinkage force of the Japanese paper caused by the evaporation of water to adhere the decorative veneer to the plywood base. It is made to resist tensile force, and the neutral axis passes through the center of the decorative flash plywood, so that it is possible to obtain decorative flash plywood that has no warpage, or even if it warps, it exhibits some downward curvature with the surface side convex. It is something to do.
次にこの発明の実施例として、３mm厚の化粧ば
り合板を製造する方法を以下に説明する。 Next, as an example of the present invention, a method for manufacturing decorative flash plywood with a thickness of 3 mm will be described below.
まず３プライ合板の表板１１と心板１２と裏板
１３のうち、裏板１３の厚みを表板１１より大と
なるように、好ましくは表板１１よりも２〜3.5
倍となるように形成して2.5〜2.7mm厚の３プライ
合板台板１０を常法により製作する（第１図
イ）。本発明者が試作したところでは、各単板の
具体的な板厚として、表板１１を0.5〜0.6mm、心
板１２を1.1〜1.2mm、裏板１３を1.1〜1.3mmとな
すとき、ほとんど反りのない化粧ばり合板が製造
できることが判明した。 First, among the top plate 11, core plate 12, and back plate 13 of 3-ply plywood, the thickness of the back plate 13 is set to be larger than the top plate 11, preferably 2 to 3.5 times thicker than the top plate 11.
A 3-ply plywood base plate 10 with a thickness of 2.5 to 2.7 mm is manufactured by a conventional method (FIG. 1A). According to the prototype produced by the present inventor, the specific thickness of each veneer is 0.5 to 0.6 mm for the top plate 11, 1.1 to 1.2 mm for the core plate 12, and 1.1 to 1.3 mm for the back plate 13. It has been found that it is possible to produce decorative plywood with almost no warping.
上記のようにして合板台板１０を製作したの
ち、その表面に、0.25〜0.30mm厚の化粧単板２０
を公知の熱硬化性接着剤ａを介して重ね合せ、熱
圧によつて接着一体化し、その後、一昼夜ほど放
置して冷却をはかる（第１図ロ）。上記化粧単板
２０としては、公知の方法によつて寄木模様など
につくられたものを用いればよい。 After producing the plywood base plate 10 as described above, a decorative veneer 20 with a thickness of 0.25 to 0.30 mm is placed on the surface of the plywood base plate 10.
They are superimposed with a known thermosetting adhesive a interposed therebetween and bonded together by heat pressure, and then left for about a day and night to cool (FIG. 1B). As the decorative veneer 20, one formed in a marquetry pattern or the like by a known method may be used.
その後、上記合板台板１０の裏面に８〜10ｇ／
m2重量の和紙３０を公知の接着剤ｂを用いてホツ
トプレス貼りまたはラミネート貼りしたのち（第
１図ハ）、この和紙３０の表面に散水装置によつ
て水を万遍なく散布し、一昼夜程度放置する（第
１図ニ）。散布する水の量は、和紙３０の貼付け
に用いる接着剤ｂ中の含水量との合計量が上記接
着剤ａ中の含水量の2.5〜３倍となるようにす
る。このようにすることによつて和紙３０の水分
が蒸発すると和紙３０が収縮することとなり、こ
の和紙３０の収縮力と、合板台板１０の裏板１３
の厚みを表板１１より大となるようにしているこ
ととが相まつて、化粧ばり合板中には上反りに対
抗する応力が生じることになり、したがつて中立
軸が化粧ばり合板の中心を通ることとなり合板台
板１０に化粧単板２０を接着したために生じる応
力とその反対側に生じる応力とがつり合い、反り
のない、または反りがあつても表面側が凸となる
下反りを多少呈する程度で実用上は何ら支障のな
い化粧ばり合板が得られることになる。ちなみに
下反りの生じている製品（幅303mm、、長さ1818mm
のもの）についてその反りの矢高を測定したとこ
ろ、３mm以下であつた。 After that, 8 to 10 g/
After hot-pressing or laminating Japanese paper 30 with a weight of 2 m2 using a known adhesive B (Fig. 1 C), water was evenly sprinkled on the surface of the Japanese paper 30 using a water spraying device, and then the paper was coated for about a day and a night. Leave it alone (Figure 1 D). The amount of water to be sprayed is such that the total amount of water including the water content in the adhesive b used for pasting the Japanese paper 30 is 2.5 to 3 times the water content in the adhesive a. By doing this, when the water in the Japanese paper 30 evaporates, the Japanese paper 30 shrinks, and the shrinkage force of the Japanese paper 30 and the back plate 13 of the plywood base plate 10
Coupled with the fact that the thickness of the decorative plywood is larger than that of the top plate 11, a stress is generated in the decorative plywood to counter warp, so that the neutral axis is centered around the center of the decorative plywood. The stress generated by adhering the decorative veneer 20 to the plywood base plate 10 and the stress generated on the opposite side are balanced, and there is no warping, or even if there is warping, the surface side is convex and exhibits some downward warping. Thus, decorative burr plywood with no practical problems can be obtained. By the way, the product is curved downward (width 303mm, length 1818mm)
When the arrow height of the warp was measured for the 100% polyester resin, it was 3 mm or less.
化粧ばり合板の製造に際し、その原木である木
材の収縮率のバラツキ、熱圧時の接着剤の収縮度
合、木材表面の乾燥状態、含水率の分布状態など
反りに及ぼす因子を全て正確に把握するのは困難
であり、またそれらは樹種によつても相違する
が、通常は表板１１に対し裏板１３を前記したよ
うに２〜3.5倍の厚みにすれば、中立軸が化粧ば
り合板の中心を通るように化粧ばり合板を製造む
ることができる。 When manufacturing decorative plywood, we accurately understand all the factors that affect warping, such as the variation in the shrinkage rate of the raw wood, the degree of shrinkage of the adhesive during heat pressing, the dryness of the wood surface, and the distribution of moisture content. It is difficult to achieve this, and it also differs depending on the wood species, but normally, if the back plate 13 is made 2 to 3.5 times as thick as the top plate 11, as described above, the neutral axis will be the same as that of the decorative plywood. It is possible to manufacture decorative plywood so that it passes through the center.
なお一般にこの種の化粧ばり合板の製造に際し
ては、合板台板１０を1835×930（mm）の寸法に
形成し、その表面に化粧単板２０を任意の模様と
なるように接着するもので、製造後はさらに表面
を研磨し、塗装したのち、長手方向に３分割して
それぞれを1818mm×303mmの寸法に仕上げるもの
である。４０は化粧ばり合板の裏面に接着した両
面接着テープ、５０は両面接着テープ４０の表面
に剥離自在に貼合した被覆テープで、施工の際は
この被覆テープ５０を剥離して接着面を露出させ
る。 In general, when manufacturing this type of decorative plywood, a plywood base plate 10 is formed to a size of 1835 x 930 (mm), and a decorative veneer 20 is bonded to the surface in an arbitrary pattern. After manufacturing, the surface was further polished and painted, and then it was divided into three parts in the longitudinal direction, each measuring 1,818 mm x 303 mm. 40 is a double-sided adhesive tape adhered to the back side of the decorative plywood, and 50 is a covering tape releasably pasted on the surface of the double-sided adhesive tape 40. During construction, this covering tape 50 is peeled off to expose the adhesive surface. .
上記のように製造された化粧ばり合板は、反り
がないか、あつても下反りの状態を呈し実用上は
何ら支障がないので、直貼り施工するのに好適で
あり、また後日、周縁部から剥離してくることも
ない。 The decorative burr plywood manufactured as described above has no warpage, or even if it does, it shows a downward curvature, and there is no problem in practical use, so it is suitable for direct pasting, and later It will not peel off from the skin.
特に裏面に両面接着テープ４０を貼着しておく
ときは、手で押えるだけの簡単な手法で貼付けで
きるので、既存の床や壁や天井などが汚れたり、
破損したりした際、その内装材の上に直接貼付け
ることによつて補修用としても使用できる。 In particular, when pasting the double-sided adhesive tape 40 on the back side, it can be pasted simply by pressing it with your hands, so it can be easily applied without getting dirty on existing floors, walls, ceilings, etc.
In the event of damage, it can also be used for repair by pasting directly onto the interior material.
また新築住宅の床材用として用いるときは、従
来の厚手（12mm〜15mm厚のもの）の化粧ばり合板
に比べ種々のすぐれた効果が得られる。すなわち
下地材には、四周に実矧加工の施されていない
普通の合板（12mm厚のもの）を用い、これを根太
などにラフい釘打ちして固定し、この上に化粧ば
り合板（３mm厚のもの）を貼付ければよいので、
下地材に安価なものが使用でき、また施工も簡単
となり、単位面積当りの建築コストを従来品に比
べ安くすることができる。従来品のように実矧
加工の施されたものを互いに嵌合して接合する必
要がないので、踏みなりの生じることがない。
建築の際は、通常床、壁、天井の順に施工せねば
ならず、そのため壁および天井の施工の際には、
既に施工済の床が汚れたり傷が付いたりすること
になるが、本発明によつて得られた化粧ばり合板
によるときは、床の下地材を施工した段階で壁お
よび天井を施工し、最後に上記下地材に化粧ばり
合板を貼付けて仕上げるという施工法の採用が可
能になるので、従来の施工法からくる欠点を解消
できる。従来、15mm厚の化粧ばり合板では、合
板台板の表板として1.2〜1.3mm厚の単板が用いら
れており、そのため化粧単板との厚みの差が著し
く大であり、化粧単板に割れが生じやすく、これ
を防ぐために合板台板の化粧単板との間に紙や布
を介在させたり、また合板台板中、表板の厚みが
薄くなるよう７プライ合板台板にしたりすること
が行なわれているので、コスト高につくものであ
つたが、本発明によつて得られた化粧ばり合板で
は合板台板の表板の厚みを薄くできるので、従来
品のような手段を施さなくとも化粧単板に割れが
生じるのを解消できることになる。 Furthermore, when used as flooring material for newly built houses, it offers various superior effects compared to conventional thick (12 mm to 15 mm thick) decorative plywood. In other words, the base material is ordinary plywood (12 mm thick) that has not been grained on all four sides, and this is fixed by rough nailing to the joists, etc., and decorative plywood (3 mm thick) is used on top of this. You just need to attach a thick one).
Cheap materials can be used as the base material, construction is simple, and the construction cost per unit area can be lower than that of conventional products. Unlike conventional products, there is no need to fit and join pieces that have been subjected to real-grain processing, so there is no possibility of treading.
During construction, floors, walls, and ceilings usually have to be constructed in this order, so when constructing walls and ceilings,
The floor that has already been constructed may become dirty or scratched, but when using decorative plywood obtained by the present invention, the walls and ceiling can be constructed at the stage when the base material for the floor has been constructed, and then the final Since it becomes possible to adopt a construction method in which decorative plywood is pasted to the base material and finished, the drawbacks of conventional construction methods can be eliminated. Conventionally, in the case of 15mm thick decorative plywood, a 1.2 to 1.3mm thick veneer is used as the top plate of the plywood base plate, so the difference in thickness between the decorative veneer and the decorative veneer is extremely large. Cracks tend to occur, so to prevent this, paper or cloth is inserted between the plywood baseboard and the decorative veneer, and a 7-ply plywood baseboard is used to reduce the thickness of the top board within the plywood baseboard. However, with the decorative beam plywood obtained by the present invention, the thickness of the top plate of the plywood base plate can be reduced, so it is not necessary to use the measures used in conventional products. This means that cracks that occur in the decorative veneer can be resolved without applying it.
第１図イ，ロ，ハ，ニはこの発明の製造方法を
順を追つて示した側面図、第２図同上によつて得
られた製品の表面側の斜視図、第３図は同上の裏
面側の一部切欠斜視図である。
１０……合板台板、１１……表板、１２……心
板、１３……裏板、２０……化粧単板、３０……
和紙、ａ，ｂ……接着剤。
Figure 1 A, B, C, and D are side views showing the manufacturing method of the present invention step by step, Figure 2 is a perspective view of the surface side of the product obtained by the same method as above, and Figure 3 is the same as in the same method. It is a partially cutaway perspective view of the back side. 10... Plywood base plate, 11... Top board, 12... Core board, 13... Back board, 20... Decorative veneer, 30...
Japanese paper, a, b...adhesive.
Claims (1)
１３の厚みを表板１２より大に形成して３プライ
合板台板１０を製作する工程と、前記台板１０表
面に接着剤ａを介して化粧単板２０を接着する工
程と、前記台板１０裏面に接着剤ｂを介して和紙
３０を貼着後、前記和紙３０の表面に水を散布す
る工程とからなる反りのない化粧ばり合板の製造
方法。1 A step of manufacturing a 3-ply plywood base plate 10 by forming the back plate 13 thicker than the front plate 12 among the front plate 11, core plate 12, and back plate 13, and applying adhesive to the surface of the base plate 10. A warp-free method consisting of the steps of adhering the decorative veneer 20 through adhesive a, and applying water to the surface of the Japanese paper 30 after pasting the Japanese paper 30 to the back surface of the base plate 10 through adhesive b. A method for manufacturing decorative plywood.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23071682A JPS59118402A (en) | 1982-12-25 | 1982-12-25 | Manufacture of decorative pasted flitch having no warpage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23071682A JPS59118402A (en) | 1982-12-25 | 1982-12-25 | Manufacture of decorative pasted flitch having no warpage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59118402A JPS59118402A (en) | 1984-07-09 |
| JPS6133682B2 true JPS6133682B2 (en) | 1986-08-04 |
Family
ID=16912184
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23071682A Granted JPS59118402A (en) | 1982-12-25 | 1982-12-25 | Manufacture of decorative pasted flitch having no warpage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59118402A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9700766B2 (en) | 2013-04-01 | 2017-07-11 | Acushnet Company | Golf club head with improved striking face |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61262101A (en) * | 1985-05-17 | 1986-11-20 | 株式会社ノダ | Manufacture of decorative board |
-
1982
- 1982-12-25 JP JP23071682A patent/JPS59118402A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9700766B2 (en) | 2013-04-01 | 2017-07-11 | Acushnet Company | Golf club head with improved striking face |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59118402A (en) | 1984-07-09 |
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