【発明の詳細な説明】
本発明はホツトメルト系の接着剤を塗布した基板
にオーバレイシートを重ねた積層板を熱圧成形す
る異形集成羽目板の製造方法とその装置に関し、
ホツトメルト系の接着剤を塗布した基板１にオー
バレイシート２を重ねた積層板Ａを上型３と下型
４との間で熱圧成形して異形集成羽目板５を形成
し、熱圧成形後で且つ解圧前に異形集成羽目板５
の屈曲部分を冷却することを特徴とする異形集成
羽目板の製造方法を特定発明とし、併せて下面に
凸部６を有する上型３と、凸部６が嵌合し得る凹
部７を有する下型４とを上下に相対向するように
配設し、下型４パーテイング面と凹部７との間の
角部に冷却水循環パイプ８を設けて成ることを特
徴とする異形集成羽目板の製造装置に係るもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing irregularly shaped laminated siding, in which a laminate is formed by laminating an overlay sheet on a substrate coated with a hot melt adhesive, and
A laminate A made by overlaying an overlay sheet 2 on a substrate 1 coated with a hot melt adhesive is hot-press molded between an upper mold 3 and a lower mold 4 to form a irregularly shaped laminated siding board 5, and after hot-press molding. In addition, before depressurization, irregularly shaped laminated siding 5
The specified invention is a method for manufacturing irregularly shaped laminated siding, characterized by cooling the bent portion of the board, and also provides an upper mold 3 having a convex portion 6 on the lower surface, and a lower mold having a concave portion 7 into which the convex portion 6 can fit. 4 are arranged to face each other vertically, and a cooling water circulation pipe 8 is provided at the corner between the parting surface of the lower mold 4 and the recess 7. It is something.
従来ホツトメルト系の接着剤を塗布した基板に
オーバレイシートを重ねた積層板を上型と下型と
の間で熱圧成形して異形集成羽目板を製造するに
当つては、上型と下型で熱圧成形した後上型と下
型との間に挾んだ状態で自然冷却したり、熱圧成
形後直ちに解圧して上型と下型との間から取出し
て放置冷却したりしている。しかしかかる従来例
の前者にあつては効率が悪くて生産性が低下する
という欠点があり、また後者にあつては初期接着
力が得られず、良い製品が得られないという欠点
があつた。 Conventionally, when producing irregularly shaped laminated siding boards by hot-pressing a laminate consisting of an overlay sheet layered on a substrate coated with a hot-melt adhesive between an upper mold and a lower mold, the upper mold and lower mold After hot-press molding, the mold is left between the upper and lower molds to cool naturally, or immediately after hot-press molding, the mold is decompressed, taken out from between the upper and lower molds, and left to cool. . However, the former of these conventional methods has the drawback of poor efficiency and reduced productivity, while the latter has the drawback of not being able to obtain initial adhesion strength and producing a good product.
本発明は叙述の点に鑑みてなされたものであつ
て、本発明の目的とするところは効率よく製造で
きる上、品質の良い製品を得ることのできる異形
集成羽目板の製造方法とその装置を提供するにあ
る。 The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide a method and apparatus for manufacturing irregularly shaped laminated siding that can be manufactured efficiently and produce a product of good quality. There is something to do.
以下本発明を実施例により詳述する。３は上型
であり、下面に下方に突出する凸部６を有してい
る。４は上型３と対向するように配置した下型で
あり、上面に上記凸部６が嵌合し得る凹部７を設
けてある。下型４のパーテイング面である上面と
凹部７との間の角部には冷却水循環パイプ８を設
けてある。また基板１にはエチレンビニル共重合
体のようなホツトメルト系の接着剤を塗布してあ
つて、この上にポリプロピレン、ポリエチレン等
のオーバレイシート２を重ねて積層板Ａを形成し
てある。上記積層板Ａの基板１は例えば樹脂含浸
薄単板を複数枚重ねた積層単板や一枚の単板であ
る。しかして上型３と下型４との間に積層板Ａを
第３図ａのように位置させ、第３図ｂのように上
型３と下型４との間で熱圧成形して異形集成羽目
板５を形成する。このとき熱圧温度は約90℃であ
る。熱圧成形した直後に冷却水循環パイプ８に冷
却水を通して異形集成羽目板５の屈曲部を冷却す
る。このとき冷却される部分の温度は約70℃であ
る。次いで第３図ｃのように上型３を離して解圧
し、異形集成羽目板５を取出し、自然冷却する。 The present invention will be explained in detail below with reference to Examples. 3 is an upper mold, which has a convex portion 6 projecting downward on its lower surface. A lower mold 4 is disposed to face the upper mold 3, and has a recess 7 on its upper surface into which the protrusion 6 can fit. A cooling water circulation pipe 8 is provided at the corner between the upper surface, which is the parting surface, of the lower mold 4 and the recess 7. The substrate 1 is coated with a hot melt adhesive such as ethylene vinyl copolymer, and an overlay sheet 2 made of polypropylene, polyethylene or the like is laminated thereon to form a laminate A. The substrate 1 of the laminate A is, for example, a laminated veneer made by stacking a plurality of resin-impregnated thin veneers or a single veneer. Then, the laminate A is positioned between the upper mold 3 and the lower mold 4 as shown in FIG. A irregularly shaped laminated siding board 5 is formed. At this time, the heat pressure temperature is about 90°C. Immediately after thermoforming, cooling water is passed through the cooling water circulation pipe 8 to cool the bent portion of the irregularly shaped panel siding 5. The temperature of the part cooled at this time is approximately 70°C. Next, as shown in FIG. 3c, the upper mold 3 is released to release the pressure, and the irregularly shaped panel board 5 is taken out and allowed to cool naturally.
第４図は叙述の他の実施例を示す。上型３が多
数個のブロツク３ａ，３ｂ，３ｃ…に縦割りして
あり、個々のブロツク３ａ，３ｂ，３ｃ…を夫々
別々に駆動できるようになつている。しかして上
型３の各ブロツク３ａ，３ｂ，３ｃが積層単板２
に単に接触するように駆動し、次いでブロツク３
ａから順にブロツク３ｂ，３ｃ…というように所
定の成形圧力（約10Kg／cm2）をかける。この際各
ブロツク３ａ，３ｂ，３ｃ…の圧力はマイクロコ
ンピユータで制御する。またプレス面の平滑性を
出すために上型３と積層板Ａとの間に硬めのクツ
シヨン材（例えばクラフト紙）を用いる。このよ
うにすると一端から他端に順にプレスされるので
積層板Ａのオーバレイシート２と基板１との間の
空気を追出すことができて気泡等のない製品を得
ることができ、しかも各ブロツク３ａ，３ｂ，３
ｃ…でかける圧力を変えることができて必要な部
分に必要な圧力をかけることができる。 FIG. 4 shows another embodiment of the description. The upper die 3 is vertically divided into a large number of blocks 3a, 3b, 3c, . . . so that each block 3a, 3b, 3c, . . . can be driven separately. Therefore, each block 3a, 3b, 3c of the upper mold 3 is made of a laminated veneer 2.
and then block 3
A predetermined molding pressure (approximately 10 kg/cm 2 ) is applied to blocks 3b, 3c, etc. starting from a. At this time, the pressure of each block 3a, 3b, 3c, . . . is controlled by a microcomputer. In addition, a hard cushion material (for example, kraft paper) is used between the upper die 3 and the laminate A to ensure smoothness of the pressing surface. In this way, since the press is performed sequentially from one end to the other, air between the overlay sheet 2 of the laminate A and the substrate 1 can be expelled, and a product without air bubbles etc. can be obtained. 3a, 3b, 3
c...The pressure applied can be changed and the necessary pressure can be applied to the necessary parts.
本発明は叙述の如く積層板を上型と下型との間
で熱圧成形して異形集成羽目板を形成し、熱圧成
形後で解圧前に異形集成羽目板の屈曲部分を冷却
しているので、解圧時に剥離することがなくて良
質の製品が得られるものであり、しかも全体を冷
却するのでなくて部分的に冷却するので復帰時間
が早くて効率が落ちず生産性が低下しないという
利点がある。 As described above, the present invention hot-presses a laminate between an upper mold and a lower mold to form an irregularly shaped laminated siding board, and cools the bent portion of the irregularly shaped laminated siding board after hot-pressing and before decompressing. As a result, high-quality products can be obtained without peeling during depressurization.Furthermore, since the system is not cooled entirely, but only partially, the recovery time is quick, and there is no drop in efficiency or productivity. There are advantages.
【図面の簡単な説明】[Brief explanation of drawings]
第１図は本発明の一実施例の装置の断面図、第
２図は同上の積層板の断面図、第３図ａ，ｂ，ｃ
は同上の製造工程の断面図、第４図は同上の他の
実施例の装置の断面図であつて、１は薄単板、２
は積層単板、３は上型、４は下型、５は異形集成
羽目板、６は凸部、７は凹部、８は冷却水循環パ
イプである。
Fig. 1 is a cross-sectional view of an apparatus according to an embodiment of the present invention, Fig. 2 is a cross-sectional view of the same laminated plate, and Fig. 3 a, b, c.
4 is a cross-sectional view of the same manufacturing process as above, and FIG.
3 is a laminated veneer, 3 is an upper mold, 4 is a lower mold, 5 is a modified laminated panel, 6 is a convex portion, 7 is a concave portion, and 8 is a cooling water circulation pipe.
【特許請求の範囲】[Claims]
１ 薄金属板をインサートした状態で平板状の合
成樹脂板を押出成形する押出成形機と、軸方向に
湾曲する外周面を有する上下一対の加熱成形ロー
ルを押出方向に複数列配設して構成されかつ外周
面の湾曲の曲率が押出し前方側の加熱成形ロール
ほど順次大きくなるように設定された成形ロール
群とを具備して成ることを特徴とする合成樹脂板
の製造装置。
1. Consists of an extrusion molding machine that extrudes a flat synthetic resin plate with a thin metal plate inserted therein, and a pair of upper and lower heat forming rolls each having an outer peripheral surface that curves in the axial direction, arranged in multiple rows in the extrusion direction. 1. An apparatus for manufacturing a synthetic resin board, comprising: a group of forming rolls set such that the curvature of the outer circumferential surface of the heating forming rolls is successively larger toward the front side of extrusion.