JPH04327902A - Manufacture of polywood - Google Patents
Manufacture of polywoodInfo
- Publication number
- JPH04327902A JPH04327902A JP12316991A JP12316991A JPH04327902A JP H04327902 A JPH04327902 A JP H04327902A JP 12316991 A JP12316991 A JP 12316991A JP 12316991 A JP12316991 A JP 12316991A JP H04327902 A JPH04327902 A JP H04327902A
- Authority
- JP
- Japan
- Prior art keywords
- plywood
- adhesive
- veneer
- temperature curing
- room temperature
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 239000011120 plywood Substances 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims abstract description 8
- 239000000853 adhesive Substances 0.000 claims description 29
- 230000001070 adhesive effect Effects 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 15
- 239000002023 wood Substances 0.000 claims description 10
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 9
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 5
- 150000001412 amines Chemical class 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002075 main ingredient Substances 0.000 claims description 4
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229920000768 polyamine Polymers 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims 2
- 239000000126 substance Substances 0.000 abstract description 5
- 238000007731 hot pressing Methods 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 3
- 239000011230 binding agent Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 238000010586 diagram Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000004744 fabric Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 229920001807 Urea-formaldehyde Polymers 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 2
- -1 Wire mesh Substances 0.000 description 1
- 229930185605 Bisphenol Natural products 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000238631 Hexapoda Species 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- 240000005746 Ruta graveolens Species 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- HNPDNOZNULJJDL-UHFFFAOYSA-N ethyl n-ethenylcarbamate Chemical compound CCOC(=O)NC=C HNPDNOZNULJJDL-UHFFFAOYSA-N 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 150000002366 halogen compounds Chemical class 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Landscapes
- Veneer Processing And Manufacture Of Plywood (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、合板の製造方法に係る
もので、特にホットプレスを全く必要とせず、コールド
プレスのみで合板を製造できる方法である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing plywood, and in particular, it is a method that does not require hot pressing at all and can manufacture plywood only by cold pressing.
【０００２】0002
【従来の技術】合板はその耐水性によって特類、１類、
２類、３類と分けられて居り、合板の８０％は２類合板
である。使用する接着剤は主として特類、１類はフェノ
ール樹脂系、２類、３類は尿素樹脂系である。[Prior art] Plywood is classified as special, class 1, and class 1 depending on its water resistance.
It is divided into Type 2 and Type 3, and 80% of plywood is Type 2 plywood. The adhesives used are mainly special class adhesives, with class 1 being phenol resin type, and class 2 and 3 being urea resin type.
【０００３】合板の一般的な製造方法は、原木を皮剥き
後、ロータリーレースで切削して得た単板をドライヤー
にて水分５〜１５％迄乾燥する。幅の狭い単板はベニヤ
コンポーザー、エッヂグルーアーではぎ合せて心板用に
する。日本の場合、３尺×６尺，４尺×８尺が一般的な
のでこの寸法に切って積上げておく。[0003] A general method for manufacturing plywood is to peel the wood and then cut it with a rotary lace, and dry the resulting veneer with a dryer to a moisture content of 5 to 15%. Narrow veneers are glued together using a veneer composer and edge gluer to form core boards. In Japan, 3 shaku x 6 shaku and 4 shaku x 8 shaku are common, so cut them to these dimensions and stack them up.
【０００４】糊液塗布はグルースプレッダーで心板に塗
布し、その上に表裏板用単板２枚を積重ねて仕組んで行
く。合板は奇数板の単板を繊維方向が直交するように構
成されている。[0004] Glue is applied to the core board using a glue spreader, and two veneers for the front and back boards are stacked on top of this. Plywood is composed of an odd number of veneers with fiber directions perpendicular to each other.
【０００５】コールドプレスで加圧仮接着後、ホットプ
レスを用いて接着する。冷圧は２〜６時間、最近のノー
クランプ法、セミクランプ法では１０〜２０分間圧締す
る。ホットプレスは尿素樹脂接着剤では１１０〜１１５
℃、フェノール樹脂接着剤では１３５〜１４０℃、圧力
はラワン合板で８〜１０ｋｇ／ｃｍ２、時間は単板の厚
み１ｍｍ当り２０〜３０秒の条件でプレスする。[0005] After temporary adhesion using cold press, adhesion is performed using hot press. Cold pressing is performed for 2 to 6 hours, and the recent no-clamp method and semi-clamp method are used for 10 to 20 minutes. Hot press is 110-115 for urea resin adhesive
For lauan plywood, the pressure is 8 to 10 kg/cm2, and the pressing time is 20 to 30 seconds per 1 mm of the thickness of the veneer.
【０００６】４０〜５０段の多段プレスにローダー、ア
ンローダーを設備して能率を上げて居るが、所詮はバッ
チシステムである。最近は大型機械も出て来たが、例え
ばＬＶＬ（Ｌａｍｉｎａｔｅｄ Ｖｅｎｅｅｒ Ｌｕｍ
ｂｅｒ ）はフィンランドのＲａｕｔｅ Ｗｏｏｄ Ｐ
ｒｏｃｅｓｓｉｎｇ Ｍａｃｈｉｎｅｒｙ が提供して
居る製造装置で、幅１〜１．２ｍ、長さ２５〜２５０ｍ
、厚さ１．９〜７．５ｃｍの構造用合板が得られるが、
やはりＰｒｅ−ｐｒｅｓｓとＨｏｔ−ｐｒｅｓｓ部があ
り、間歇的に作業が行われ連続プレスとは云えない。[0006] A multistage press with 40 to 50 stages is equipped with a loader and an unloader to improve efficiency, but it is still a batch system. Recently, large machines have appeared, such as LVL (Laminated Veneer Lum).
ber) is Finnish Raute Wood P.
The manufacturing equipment provided by Rocessing Machinery is 1-1.2m wide and 25-250m long.
, structural plywood with a thickness of 1.9 to 7.5 cm is obtained,
After all, there is a Pre-press and a Hot-press section, and work is performed intermittently, so it cannot be called a continuous press.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、コールドプ
レスのみで合板を製造でき、連続システム化可能な合板
の製造を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing plywood that can be manufactured using only cold pressing and that can be integrated into a continuous system.
【０００８】[0008]
【課題を解決するための手段】本発明は、常温硬化型接
着剤を含浸した網状物質を挟んで２枚の単板をコールド
プレスの後クランプし、常温放置して得られる合板、及
び同操作を繰返して得られる合板の製造方法に関するも
のである。[Means for Solving the Problems] The present invention provides a plywood obtained by cold pressing and then clamping two veneers with a net-like substance impregnated with a room temperature curing adhesive between them, and leaving them at room temperature, and a plywood obtained by the same operation. The present invention relates to a method for manufacturing plywood obtained by repeating the process.
【０００９】基本的な構造は図１に示すように上単板１
と下単板２の間に常温硬化型接着剤３を含浸した網状物
質４を介在させて単板２枚を接着した合板である。図１
，図２は上下単板の繊維方向が平行のもの、図３，図４
は上板が小幅単板１’をはぎ合せてあり、上下単板の繊
維方向が直角である。The basic structure is as shown in FIG.
This is a plywood in which two veneers are bonded together with a net-like material 4 impregnated with a room-temperature curing adhesive 3 interposed between the lower veneer 2 and the lower veneer 2. Figure 1
, Figure 2 shows the upper and lower veneers with parallel fiber directions, Figures 3 and 4.
The upper plate is made of narrow veneers 1' glued together, and the fiber directions of the upper and lower veneers are at right angles.
【００１０】この合板２枚を更に常温硬化型接着剤を含
浸した網状物質を介在させて接着して行く。図７は４プ
ライ合板である。以下同様な操作を繰返すことによって
任意の厚みの合板が得られる。構造用木材も容易に得ら
れる。The two sheets of plywood are then bonded together with a net-like material impregnated with an adhesive that hardens at room temperature. Figure 7 shows 4-ply plywood. By repeating the same operation, plywood of any thickness can be obtained. Structural wood is also readily available.
【００１１】単板の機械への供給方法は、単板の長手方
向が機械のラインの進行方向（矢印Ａ）と平行なのが図
２，図４で、直角なのが図５，図６である。The method of feeding the veneer to the machine is shown in Figures 2 and 4 when the longitudinal direction of the veneer is parallel to the direction of movement of the machine line (arrow A), and in Figures 5 and 6 when it is at right angles. .
【００１２】製造方法の一例を図８に示す。主剤５と硬
化剤６は夫々モノポンプ（定量ポンプ）７及び８により
所定割合で供給される。これら二液をスタティックミキ
サー９で充分混合して得た常温硬化型接着剤３は含浸槽
１０に供給される。網状物質４は含浸槽１０を通り、二
本ロール１１と１２の間で接着剤付着量を所定量に調節
する。An example of the manufacturing method is shown in FIG. The main agent 5 and the curing agent 6 are supplied at a predetermined ratio by mono pumps (metering pumps) 7 and 8, respectively. The room temperature curing adhesive 3 obtained by sufficiently mixing these two liquids in a static mixer 9 is supplied to an impregnation tank 10. The net-like material 4 passes through an impregnating tank 10, and between two rolls 11 and 12, the amount of adhesive applied is adjusted to a predetermined amount.
【００１３】次いで接着剤の付着した網状物質４の上下
に単板を供給する。下単板２はロール１３により横から
供給される。ロール１３が点線の位置に下がった時、下
単板２はロール１４の上にのり、直角の方向に方向転換
して次の部所に送られる。Next, veneers are supplied above and below the mesh material 4 to which the adhesive has been adhered. The lower veneer 2 is fed from the side by a roll 13. When the roll 13 is lowered to the position indicated by the dotted line, the lower veneer 2 is placed on the roll 14, turned in a right angle direction, and sent to the next location.
【００１４】上単板１又は１’はベルトコンベヤー１５
と１６との間に挟んで連続して供給される（図９参照）
。本発明の方法では小幅単板１’もベルトで押えながら
供給出来る。従来の方法では、小幅単板はベニヤコンポ
ーザー，エッジグルーアーを用いてホットメルト接着剤
ではぎ合わせておく必要があった。上下の送りロール１
８及び１９の間で、合板の厚みは所定の厚みに規制され
る。次いで、カッター２０でこの位置に板が来た時、接
着剤付網状物質を切断する。切断された合板は、送りロ
ール２１によりスタッカー２２上に堆積される。
日本の合板の寸法は、３尺×６尺又は４尺×８尺が一般
的である。図面に示す単板はこれら定尺物である。[0014] The upper veneer 1 or 1' is conveyed by a belt conveyor 15.
and 16 (see Figure 9).
. In the method of the present invention, even a narrow veneer 1' can be fed while being held down with a belt. In the conventional method, narrow-width veneers had to be glued together with hot melt adhesive using a veneer composer and edge gluer. Upper and lower feed roll 1
Between 8 and 19, the thickness of the plywood is regulated to a predetermined thickness. Then, when the plate reaches this position, the cutter 20 cuts the adhesive-attached net material. The cut plywood is stacked on a stacker 22 by a feed roll 21. The dimensions of Japanese plywood are generally 3 shaku x 6 shaku or 4 shaku x 8 shaku. The veneers shown in the drawings are of these standard sizes.
【００１５】堆積された単板は７〜１０ｃｍ毎に厚い合
板を挿入し、高さ１００〜１５０ｃｍになったら上下に
当て板をしてコールドプレスに移し、約１０ｋｇ／ｃｍ
２で１０〜１５分間圧締する。そのままタンバックルで
クランプする。次にコールドプレスから外し、１２〜２
４時間常温放置して接着剤を硬化させる。冬期硬化がお
くれるものは、１５〜８０℃の部屋に放置して、硬化を
促進してもよい。かくて得られた合板はクランプを外し
、ダブルサイザーにより縦横寸法に切りそろえ、サンダ
ーで研磨して製品とする。[0015] Thick plywood is inserted into the accumulated veneer every 7 to 10 cm, and when it reaches a height of 100 to 150 cm, it is placed on top and bottom and transferred to a cold press, and the thickness is about 10 kg/cm.
Press step 2 for 10 to 15 minutes. Clamp it with the tongue buckle. Next, remove from cold press and 12-2
Leave it at room temperature for 4 hours to harden the adhesive. If the hardening is delayed in winter, the hardening may be accelerated by leaving it in a room at 15 to 80°C. The plywood thus obtained is unclamped, cut into vertical and horizontal dimensions using a double sizer, and polished with a sander to produce a product.
【００１６】図８には、３尺×６尺又は４尺×８尺の定
尺単板を示しているが、連続単板を用いカッター２０で
定尺×ｎの長さに切断し、台車２２の長さ及びコールド
プレスの長さを定尺×ｎの長さにすれば、定尺×ｎの長
さの長尺の合板が得られる。FIG. 8 shows standard length veneers of 3 shaku x 6 shaku or 4 shaku x 8 shaku. Using a continuous veneer, cut the veneer into the standard length x n length with a cutter 20 and place it on a trolley. If the length of 22 and the length of the cold press are set to the length of the standard length x n, a long plywood with a length of the standard size x n will be obtained.
【００１７】単板の代りにひき材、ハニカムコアー，パ
ーチクルボード，プラスチックシート，アルミニウム，
銅，ステンレス，チタン等の金属フィルム，不燃化処理
単板（後出）等を用いれば、夫々目的とする特殊合板を
作ることが出来る。使用する網状物質としては、綿，強
化スフ，ポリエステルを用いた寒冷紗，ガラスクロス，
金網，不織布，多孔金属フィルム，日石ワリフ（日本石
油化学工業株式会社製）等が使用できる。必要あれば、
横方向の糸の強度を縦より強くして、製品合板の横方向
の強度を補強することも出来る。[0017] Instead of veneer, sawn timber, honeycomb core, particle board, plastic sheet, aluminum,
By using metal films such as copper, stainless steel, and titanium, and non-combustible veneers (described later), it is possible to make special plywood for each purpose. The mesh materials used include cotton, reinforced cloth, cheesecloth made of polyester, glass cloth,
Wire mesh, nonwoven fabric, porous metal film, Nisseki Warif (manufactured by Nippon Petrochemical Industries, Ltd.), etc. can be used. If necessary,
It is also possible to strengthen the strength of the product plywood in the horizontal direction by making the strength of the yarn stronger in the horizontal direction than in the vertical direction.
【００１８】常温硬化型接着剤としては、二液性エポキ
シ樹脂，二液性ウレタン樹脂，水性ビニルウレタンの如
き水性高分子（主剤）−イソシアネート架橋剤の組合わ
せ、常温硬化剤を加えたレゾルシノール樹脂等があるが
、木材の水分が多くても硬化するものが好ましい。自己
乳化型エポキシ樹脂を主剤とし、これに自己乳化型ポリ
アミドアミン硬化剤や水中湿潤面硬化型変性ポリアミン
硬化剤の如く水が存在しても作用する硬化剤との組み合
わせが最適である。此等主剤，硬化剤に充填材や増粘剤
を加えて接着剤とする。Room temperature curing adhesives include two-component epoxy resins, two-component urethane resins, combinations of water-based polymers (base resin) such as water-based vinyl urethane and isocyanate cross-linking agents, and resorcinol resins with room-temperature curing agents added. etc., but those that harden even if the wood has a lot of moisture are preferred. It is best to use a self-emulsifying epoxy resin as the main ingredient, and to combine this with a curing agent that acts even in the presence of water, such as a self-emulsifying polyamide amine curing agent or an underwater wet surface curing type modified polyamine curing agent. Fillers and thickeners are added to these base agents and hardeners to make adhesives.
【００１９】充填剤としては炭酸カルシウム，珪砂，水
酸化アルミニウム等があるが、その内水酸化アルミニウ
ムを樹脂分の１．５倍以上大量に混入したものは接着剤
に不燃性を付与出来る。水酸化アルミニウム含有接着剤
の燃焼のメカニズムは、その結晶水の吸熱分解により、
樹脂の熱分解ゾーンの温度が下がり、低分子量可燃性分
解生成物の発生量が減少し、燃焼限界濃度を下廻るため
に燃焼の持続が困難になる。即ち、１）燃えにくい。
２）一度炎が出ても煙の発生が少ない。３）炎を遠ざけ
れば直ちに自然消火する。４）有害ガスの発生は少ない
。５）コストが安い。等の利点がある。Fillers include calcium carbonate, silica sand, aluminum hydroxide, etc. Among them, those containing aluminum hydroxide in a large amount of 1.5 times or more the resin content can impart nonflammability to the adhesive. The combustion mechanism of adhesives containing aluminum hydroxide is due to the endothermic decomposition of its crystallized water.
The temperature in the thermal decomposition zone of the resin decreases, the amount of low molecular weight combustible decomposition products generated decreases, and the concentration falls below the flammable limit, making it difficult to sustain combustion. That is, 1) It is difficult to burn. 2) Even if a flame breaks out, little smoke is generated. 3) Move the flame away and it will extinguish naturally. 4) There is little generation of harmful gases. 5) Low cost. There are advantages such as
【００２０】従来のプラスチックの難燃性は、主にハロ
ゲン化合物，三酸化アンチモン，リン化合物等を添加す
ることによって行われて来たが、燃焼時有害ガスを発生
したり、コスト高になる等問題があった。Conventionally, flame retardancy of plastics has been achieved mainly by adding halogen compounds, antimony trioxide, phosphorus compounds, etc., but these methods generate harmful gases when burned, increase costs, etc. There was a problem.
【００２１】[0021]
【実施態様】次に、実施例によって本発明を説明する。[Embodiments] Next, the present invention will be explained by examples.
【００２２】[0022]
【実施例１】図８に於て、自己乳化型エポキシ樹脂３０
部を水２０部で乳化し、これで炭酸カルシウム５０〜７
０部を混練して主剤５を作る。自己乳化型ポリアミドア
ミン硬化剤１５部を水１５部で乳化すると、グリース状
になる。更に５０〜７０部の水で希釈して硬化剤６を得
る。[Example 1] In FIG. 8, self-emulsifying epoxy resin 30
Emulsify 1 part with 20 parts of water, and this will give 50 to 7 parts of calcium carbonate.
0 parts are kneaded to make main ingredient 5. When 15 parts of a self-emulsifying polyamide amine curing agent is emulsified with 15 parts of water, it becomes grease-like. It is further diluted with 50 to 70 parts of water to obtain curing agent 6.
【００２３】主剤５と硬化剤６を１：１の割合でスタテ
ィックミキサー９を用いて混合したものを含浸槽１０に
供給する。ラワン材をロータリーレースで２ｍｍ厚に切
削した単板をドライヤーで予め含水率１５〜２０％迄乾
燥し、定尺に切断する。節、割れ等の少ないものを下板
用に、小幅単板や欠点の多いものを上板用に調板してお
く。網状物質４としては綿寒冷紗の巻物を用い、接着剤
３を２００ｇ／ｍ２含浸したものを挟んで上下から単板
を供給する。A mixture of the base material 5 and the curing agent 6 at a ratio of 1:1 using a static mixer 9 is supplied to the impregnation tank 10 . A veneer made of lauan wood cut to a thickness of 2 mm using a rotary lace is dried in advance with a dryer to a moisture content of 15 to 20%, and then cut into regular lengths. Use a piece with fewer knots, cracks, etc. for the lower board, and use a narrow veneer or one with many defects for the upper board. A roll of cotton cheesecloth is used as the net-like material 4, and the material impregnated with the adhesive 3 at 200 g/m2 is sandwiched therebetween, and the veneer is supplied from above and below.
【００２４】スタッカー２２に堆積された単板は高さ１
００〜１５０ｃｍになったらコールドプレスに移し、１
０ｋｇ／ｃｍ２で１０分間圧締する。そのままタンバッ
クルでクランプしたままプレスから外し、常温に１２時
間放置した。接着剤は硬化して居り、１類合格の耐水合
板が得られた。The veneer stacked on the stacker 22 has a height of 1
When it reaches 0.00-150 cm, transfer it to a cold press, 1
Press at 0 kg/cm2 for 10 minutes. It was removed from the press while still being clamped with a tongue buckle, and left at room temperature for 12 hours. The adhesive had hardened, and a water-resistant plywood that passed Class 1 was obtained.
【００２５】[0025]
【実施例２】予め下記の工程で不燃化処理した単板と不
燃接着剤を用い、難燃合板を製造した。即ち、ロータリ
ーレースで２ｍｍ厚生単板を得、定尺に切断する。[Example 2] A flame-retardant plywood was manufactured using a veneer that had been rendered flameproof in the following process and a flameproof adhesive. That is, a 2 mm thick veneer is obtained using a rotary lace and cut into regular lengths.
【００２６】図１０の如きステンレスの籠２３に生単板
を入れ、籠ごと第１液（塩化アルミニウム３５〜４５％
水溶液）の槽に室温〜８０℃で、４時間〜２日間浸漬す
る。次に第２液（アンモニア２７％塩化アンモン５％の
緩衝溶液）に室温で４〜１０時間浸漬すると木質導管の
中で水酸化アルミニウムの沈殿が出来る。充分水洗乾燥
して不燃化処理単板とする。Place the green veneer in a stainless steel basket 23 as shown in FIG.
aqueous solution) at room temperature to 80°C for 4 hours to 2 days. Next, aluminum hydroxide is precipitated in the wood conduit when it is immersed in a second solution (buffer solution of 27% ammonia and 5% ammonium chloride) at room temperature for 4 to 10 hours. Thoroughly wash and dry to make a nonflammable veneer.
【００２７】第１液の浸漬を減圧、加圧を使えば時間が
短縮出来る。例えばマーリス処理装置を用いて減圧（５
００ｍｍＨｇ以上）３０分間後、第１液を加圧（１０ｋ
ｇ／ｃｍ２）注入、５時間後再び減圧して液を排出すれ
ばよい。
木材の種類にもよるが、ラワン材で全乾状態の２０％以
上水酸化アルミニウムが木質導管内で生成した。[0027] If the first liquid is immersed under reduced pressure or increased pressure, the time can be shortened. For example, use a Merlis treatment device to reduce the pressure (5
00mmHg or higher) for 30 minutes, the first liquid was pressurized (10k
g/cm2) injection, and after 5 hours, the pressure may be reduced again to discharge the liquid. Although it depends on the type of wood, more than 20% of aluminum hydroxide was generated in the wood conduit in lauan wood when completely dry.
【００２８】不燃接着剤としては主剤として自己乳化型
エポキシ樹脂（ビスフェノールタイプ）２０部に水１０
部を加えて乳化し、水酸化アルミニウム微粉末４５〜５
５部（エポキシ樹脂とポリアミドアミン硬化剤の合計の
１．５倍以上）を混練して作る。The non-combustible adhesive is made of 20 parts of self-emulsifying epoxy resin (bisphenol type) and 10 parts of water as the main ingredient.
Add 45 to 5 parts of aluminum hydroxide fine powder and emulsify it.
It is made by kneading 5 parts (at least 1.5 times the total of the epoxy resin and polyamide amine curing agent).
【００２９】硬化剤としては、自己乳化型ポリアミドア
ミン硬化剤１０部を水１０部で乳化し、更に水５５〜６
５部を加えて作る。主剤と硬化剤を１：１で混合して用
いる。網状物質としては、目の大きさが２ｍｍのガラス
クロスの巻物を前記不燃接着剤を入れた含浸槽を通して
２５０ｇ／ｍ２付着させる。前記不燃化処理した単板を
上板，下板として仕組み、スタッカーの上に１００〜１
５０ｃｍ堆積したらコールドプレスで１０ｋｇ／ｃｍ２
に１０分間圧締した。タンバックルでクランプしコール
ドプレスから外し、室温に１２時間放置して合板を得る
。この合板２枚を上板，下板として同じ接着剤含浸ガラ
スクロスを真中に挟んで同じ操作を繰返し、単板４枚か
らなる合板を得た。As a curing agent, 10 parts of a self-emulsifying polyamide amine curing agent is emulsified with 10 parts of water, and then 55 to 6 parts of water is added.
Make by adding 5 parts. The base resin and curing agent are mixed at a ratio of 1:1. As the reticulated material, a roll of glass cloth with a mesh size of 2 mm was passed through an impregnating tank containing the above-mentioned non-combustible adhesive and deposited at 250 g/m2. The above-mentioned flameproof treated veneer is used as an upper plate and a lower plate, and 100~1
When 50cm is deposited, it is cold pressed to 10kg/cm2.
It was pressed for 10 minutes. Clamp with tongue buckles, remove from cold press and leave at room temperature for 12 hours to obtain plywood. The same operation was repeated with the same adhesive-impregnated glass cloth sandwiched between the two sheets of plywood as an upper plate and a lower plate, to obtain a plywood consisting of four veneers.
【００３０】得られた合板はＪＩＳ１３２１「建築物の
内装材料および工法の難燃性の試験方法」に準じて６分
間加熱試験した。結果は難燃合板に合格した。又厚さ５
．５ｍｍ以下のものはＪＩＳ１３２２の試験で防炎合板
に合格した。尚、不燃性以外に防腐、防虫、寸法安定性
の点でも優れて居る。更に、表面に厚さ２０〜３０μｍ
のステンレスフィルムを水酸化アルミニウムを６０％以
上含有したエポキシ樹脂接着剤で貼合わせたオーバーレ
イ合板はＪＩＳ１３２１の１０分間加熱試験で準不燃合
板に合格した。The obtained plywood was subjected to a heating test for 6 minutes in accordance with JIS 1321 "Testing method for flame retardancy of building interior materials and construction methods". The result was that it passed the test as flame retardant plywood. Also thickness 5
．． Those with a thickness of 5 mm or less passed the JIS1322 test as flameproof plywood. In addition to being nonflammable, it is also excellent in terms of antiseptic properties, insect repellency, and dimensional stability. Furthermore, the surface has a thickness of 20 to 30 μm.
An overlay plywood made by bonding a stainless steel film with an epoxy resin adhesive containing 60% or more of aluminum hydroxide passed the JIS1321 10-minute heating test as quasi-noncombustible plywood.
【００３１】[0031]
【発明の効果】本発明によれば、合板の製造にホットプ
レスを全く必要としないので、低コストで省力化にすぐ
れた合板の製造が可能である。Effects of the Invention According to the present invention, since hot pressing is not required at all in the production of plywood, it is possible to produce plywood at low cost and with excellent labor savings.
【図１】本発明の合板の基本的な構造を示す図である。FIG. 1 is a diagram showing the basic structure of the plywood of the present invention.
【図２】図１の合板のライン上における仕組を示す図で
ある。FIG. 2 is a diagram showing the structure of the plywood in FIG. 1 on a line.
【図３】本発明の合板の基本的な構造の他の例を示す図
である。FIG. 3 is a diagram showing another example of the basic structure of the plywood of the present invention.
【図４】図３の合板のライン上における仕組を示す図で
ある。FIG. 4 is a diagram showing the structure of the plywood in FIG. 3 on a line.
【図５】図１の合板のライン上における仕組を示す図で
ある。FIG. 5 is a diagram showing the structure of the plywood in FIG. 1 on a line.
【図６】図３の合板のライン上における仕組を示す図で
ある。FIG. 6 is a diagram showing the structure of the plywood on the line in FIG. 3;
【図７】本発明で製造した合板の１例を示す図である。FIG. 7 is a diagram showing an example of plywood manufactured according to the present invention.
【図８】本発明の製造の１例を示す概略説明図である。FIG. 8 is a schematic explanatory diagram showing an example of manufacturing according to the present invention.
【図９】上単板を供給する部分の説明図である。FIG. 9 is an explanatory diagram of a portion that supplies the upper veneer.
【図１０】単板の不燃化処理の説明図である。FIG. 10 is an explanatory diagram of nonflammability treatment of a veneer.
１，１’ 上単板（１’は小幅単板）２ 下単板
３ 接着剤
４ 網状物質
５ 主剤
６ 硬化剤
７，８ モノポンプ
９ スタティックミキサー
１０ 含浸槽
１１，１２ ロール
１３，１４，１８，１９，２１ ロール１５，１６
ベルトコンベヤー
２０ カッター
２２ スタッカー
２３ ステンレス籠
Ａ 機械ラインの進行方向1, 1' Upper veneer (1' is a narrow veneer) 2 Lower veneer 3 Adhesive 4 Reticular substance 5 Main agent 6 Hardening agent 7, 8 Mono pump 9 Static mixer 10 Impregnation tank 11, 12 Rolls 13, 14, 18, 19, 21 Roll 15, 16
Belt conveyor 20 Cutter 22 Stacker 23 Stainless steel basket A Machine line advancing direction
Claims (4)
を挟んで、２枚の単板をコールドプレスのみで接着して
合板を製造し、次いでこの合板２枚を同様に常温硬化型
接着剤を含浸した網状物質を介在させて接着し、以下同
様な操作を繰返すことによって所望の厚みの合板を得る
ことを特徴とする合板の製造法。Claim 1: A plywood is produced by bonding two veneers together only by cold pressing, sandwiching a net-like material impregnated with a room temperature curing adhesive, and then bonding the two sheets of plywood together using a room temperature curing adhesive. 1. A method for producing plywood, which comprises adhering with a net-like material impregnated with the material, and repeating the same procedure to obtain plywood of a desired thickness.
キシ樹脂を主剤とし、自己乳化型ポリアミドアミン硬化
剤や水中湿潤面硬化型変性ポリアミン硬化剤等を硬化剤
とし、これら両者を混合して得た接着剤である請求項１
記載の合板の製造法。[Claim 2] The room-temperature curing adhesive has a self-emulsifying epoxy resin as a main ingredient, a self-emulsifying polyamide amine curing agent, an underwater wet surface curing type modified polyamine curing agent, etc. as a curing agent, and a mixture of these two. Claim 1 is an adhesive obtained by
Method of manufacturing the described plywood.
シ樹脂接着剤に充填材として水酸化アルミニウム微粉末
を樹脂分の１．５倍以上混合した不燃接着剤である請求
項１記載の合板の製造法。3. The plywood according to claim 1, wherein the room temperature curing adhesive is a noncombustible adhesive prepared by mixing a room temperature curing epoxy resin adhesive with aluminum hydroxide fine powder as a filler at least 1.5 times the resin content. Manufacturing method.
ム水溶液に、次に第２液としてアンモニア、塩化アンモ
ン混合水溶液に浸漬して、木質導管の中で水酸化アルミ
ニウムを生成させて不燃化処理単板とし、この不燃化処
理単板を不燃接着剤を含浸した網状物質を挟んで接着す
ることを特徴とする難燃合板の製造法。4. The veneer is immersed in an aluminum chloride aqueous solution as the first liquid and then in an ammonia and ammonium chloride mixed aqueous solution as the second liquid to generate aluminum hydroxide in the wood conduit to make it nonflammable. 1. A method for producing flame-retardant plywood, characterized in that the veneer is made into a veneer, and the veneer is bonded by sandwiching a mesh material impregnated with a non-combustible adhesive.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316991A JPH0698605B2 (en) | 1991-04-26 | 1991-04-26 | Plywood manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12316991A JPH0698605B2 (en) | 1991-04-26 | 1991-04-26 | Plywood manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04327902A true JPH04327902A (en) | 1992-11-17 |
| JPH0698605B2 JPH0698605B2 (en) | 1994-12-07 |
Family
ID=14853895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12316991A Expired - Lifetime JPH0698605B2 (en) | 1991-04-26 | 1991-04-26 | Plywood manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0698605B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699963A (en) * | 2012-06-12 | 2012-10-03 | 福建农林大学 | Anti-corrosive plywood and production method thereof |
| CN106994722A (en) * | 2017-04-10 | 2017-08-01 | 南通博泰美术图案设计有限公司 | A kind of environmental protection composite board processing technology |
| CN109015952A (en) * | 2018-07-16 | 2018-12-18 | 漳州鑫华成机械制造有限公司 | A kind of overhead cold press |
| WO2022099433A1 (en) * | 2020-11-10 | 2022-05-19 | Huntsman International Llc | Manufacturing equipment, manufacturing method of polyurethane plywood and polyurethane plywood produced thereof |
-
1991
- 1991-04-26 JP JP12316991A patent/JPH0698605B2/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699963A (en) * | 2012-06-12 | 2012-10-03 | 福建农林大学 | Anti-corrosive plywood and production method thereof |
| CN106994722A (en) * | 2017-04-10 | 2017-08-01 | 南通博泰美术图案设计有限公司 | A kind of environmental protection composite board processing technology |
| CN109015952A (en) * | 2018-07-16 | 2018-12-18 | 漳州鑫华成机械制造有限公司 | A kind of overhead cold press |
| CN109015952B (en) * | 2018-07-16 | 2020-10-27 | 漳州鑫华成机械制造有限公司 | Overhead cold press |
| WO2022099433A1 (en) * | 2020-11-10 | 2022-05-19 | Huntsman International Llc | Manufacturing equipment, manufacturing method of polyurethane plywood and polyurethane plywood produced thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0698605B2 (en) | 1994-12-07 |
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