JP2533662B2 - Manufacturing method of eaves gutter - Google Patents

Description

【発明の詳細な説明】 （産業上の利用分野） 本発明は、耐久性に優れた繊維補強合成樹脂からなる
軒樋の製造方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for manufacturing eaves gutters made of a fiber-reinforced synthetic resin having excellent durability.

（従来の技術） 軒樋は一般に樋本体部と樋耳部とからなり、塩化ビニ
ル樹脂等の熱可塑性樹脂で長尺に押出成形され広く使用
されている。しかし、かかる熱可塑性樹脂製の軒樋は、
熱伸縮が大きく剛性が小さいため、四季や昼夜の気温変
化により変形し、またひび割れが発生し易いという欠点
がある。(Prior Art) An eaves gutter is generally composed of a gutter body part and a gutter ear part, and is widely used by being extruded in a long length with a thermoplastic resin such as vinyl chloride resin. However, such a thermoplastic resin eaves gutter is
Since it has large thermal expansion and contraction and low rigidity, it has a disadvantage that it is easily deformed due to a change in temperature during the four seasons or day and night, and cracks are easily generated.

このような欠点を改良した軒樋として、第５図に示す
ように、軒樋状の補強芯材１の両面に熱可塑性樹脂２が
被覆された軒樋が提案されている。この種の軒樋は、一
般に補強繊維材に合成樹脂を含浸してなる帯状芯材を用
いて軒樋状の補強芯材１を作り、この補強芯材１を押出
機のクロスヘッド金型に導入し、これに熱可塑性樹脂２
を溶融押出被覆することにより製造される。As an eaves trough in which such a drawback is improved, as shown in FIG. 5, an eaves trough in which a thermoplastic resin 2 is coated on both surfaces of a eaves trough-shaped reinforcing core material 1 is proposed. In this type of eaves gutter, an eaves trough-shaped reinforcing core material 1 is generally made by using a strip-shaped core material obtained by impregnating a reinforcing fiber material with a synthetic resin, and the reinforcing core material 1 is used as a crosshead mold of an extruder. Introduced into it, thermoplastic resin 2
Is produced by melt extrusion coating.

この場合、補強芯材１は一般に樋本体部３のみならず
樋耳部４へも延出されこの部分を強化している。そし
て、樋耳部４の補強芯材１″は樋耳部４に沿ってほぼ筒
状に形成され、その終縁１は樋本体部３の補強芯材
１′から上方へ続く樋耳部４の補強芯材１″に当接する
か或いは少し離れた状態で、その内側と外側とに熱可塑
性樹脂２が押出被覆されている。In this case, the reinforcing core material 1 generally extends not only to the gutter body portion 3 but also to the gutter ear portion 4 to reinforce this portion. The reinforcing core material 1 ″ of the gutter ear portion 4 is formed into a substantially cylindrical shape along the gutter ear portion 4, and the end edge 1 thereof extends upward from the reinforcing core material 1 ′ of the gutter body portion 3. The thermoplastic resin 2 is extrusion-coated on the inner side and the outer side of the reinforcing core 1 ″ while being in contact with or slightly separated from the reinforcing core 1.

（発明が解決すようとする課題） ところが、かかる従来の補強芯材を用いた軒樋にあっ
ては、特に補強芯材の終縁部付近の樋耳部の強化が不充
分である。そのため、軒樋が直射日光に晒されて高温に
なると、補強芯材の終縁部付近の樋耳部が変形し、樋耳
部の開きや取付金具の抜けが発生する場合があり、樋耳
部の機能が充分に発揮されない。(Problems to be Solved by the Invention) However, in the eaves gutter using such a conventional reinforcing core material, particularly the reinforcement of the trough ear portion near the end edge portion of the reinforcing core material is insufficient. Therefore, when the eaves gutter is exposed to direct sunlight and becomes hot, the gutter ear near the end edge of the reinforcing core may be deformed, and the gutter ear may open or the mounting bracket may come off. The functions of the parts are not fully exerted.

また、樋耳部の補強芯材の内側と外側との両側に熱可
塑性樹脂を押出被覆する場合は、内側を外側と同じよう
に均一な肉厚に押出被覆するのは容易でなく、このよう
に肉厚が不均一になると使用中に樋耳部が全体として変
形し易くなる。また、樋耳部の形状によっては、樋耳部
が押し潰された状態になったり押し広げられた状態にな
ったりして押出される場合があり、樋耳部の形状をあま
り自由に変更できないという欠点がある。Also, when thermoplastic resin is extrusion-coated on both the inside and outside of the reinforcement core of the gutter, it is not easy to extrusion-coat the inside with a uniform wall thickness like the outside. If the wall thickness is uneven, the trough portion is likely to be deformed as a whole during use. In addition, depending on the shape of the gutter ear part, the gutter ear part may be crushed or pushed out and may be extruded, and the shape of the gutter ear part cannot be freely changed. There is a drawback that.

本発明は、上記の問題を解決するものであり、その目
的とするところは、従来の補強芯材を用いた軒樋におい
て、補強芯材の終縁部付近の樋耳部を充分に強化し、高
温環境下で使用しても樋耳部の変形や取付金具の抜けが
発生せず、しかも取付金具の係止が容易なように樋耳部
の形状を自由に変更できる軒樋の製造方法を提供するこ
とにある。The present invention is to solve the above problems, and an object thereof is to elevate the gutter ear portion near the end edge portion of the reinforcing core material in the eaves gutter using the conventional reinforcing core material. The manufacturing method of eaves gutter that can change the shape of the gutter ear part so that the gutter part does not deform or the mounting bracket does not come off even when used in a high temperature environment and the mounting bracket can be easily locked. To provide.

（課題を解決するための手段） 本発明の軒樋の製造方法は、連続した多数の長繊維か
らなる補強繊維材を流動床に導入し解繊状態にて粉末状
の熱可塑性樹脂を含浸してなる帯状芯材を用いて、樋耳
部芯材がループ型の筒状に形成されその終縁部が樋本体
部芯材に重ね合わされた状態にて接着された軒樋状の補
強芯材を作り、この補強芯材を押出機のクロスヘッド金
型に導入し、樋耳部芯材の内側を除く補強芯材の全面に
熱可塑性樹脂を溶融押出被覆し一体化することを特徴と
し、そのことにより上記の目的が達成される。(Means for Solving the Problem) The method for manufacturing an eaves gutter of the present invention comprises introducing a reinforcing fiber material composed of a large number of continuous long fibers into a fluidized bed and impregnating the powdery thermoplastic resin in a defibrated state. Eaves trough-shaped reinforcing core material in which the trough core material is formed into a loop-shaped tubular shape, and the end edge of the trough core material is bonded to the trough main body core material by using the strip-shaped core material And introducing this reinforcing core material into a crosshead mold of an extruder, and melting and extruding a thermoplastic resin over the entire surface of the reinforcing core material excluding the inner side of the trough core material to integrate it, Thereby, the above-mentioned object is achieved.

以下、図面を参照しながら本発明方法を説明する。 Hereinafter, the method of the present invention will be described with reference to the drawings.

第１図及び第２図は、本発明軒樋の製造方法の一例を
示す概略図である。第１図において、11は連続した多数
の長繊維であって、この長繊維11としては、ガラス繊維
をはじめ、カーボン繊維、アルミナ繊維、アラミド繊維
などのロービングが好適に用いられる。1 and 2 are schematic views showing an example of a method for manufacturing an eaves gutter of the present invention. In FIG. 1, reference numeral 11 denotes a number of continuous long fibers. As the long fibers 11, rovings such as glass fibers, carbon fibers, alumina fibers, and aramid fibers are suitably used.

多数の長繊維11は、ボビンから繰り出され長手方向に
帯状に配列されて、多孔質の底板31を備えた流動床30に
導入される。長繊維11は、通常、流動床30に導入させる
前か、或いは図のように流動床30の中で解繊具32により
解繊される。A large number of long fibers 11 are fed from a bobbin, arranged in strips in the longitudinal direction, and introduced into a fluidized bed 30 provided with a porous bottom plate 31. The long fibers 11 are usually defibrated by a defibrating tool 32 before being introduced into the fluidized bed 30 or in the fluidized bed 30 as illustrated.

流動床30には、粉末状の熱可塑性樹脂12が空気圧によ
り多孔質の底板31の上方に吹きあげられて浮遊状態に保
たれている。粉末状の熱可塑性樹脂12の粒子径は、一般
に10〜200μｍ程度とされる。そして、流動床30に導入
された多数の長繊維11に、浮遊状態にある粉末状の熱可
塑性樹脂12が含浸される。In the fluidized bed 30, the powdery thermoplastic resin 12 is blown above the porous bottom plate 31 by air pressure and is kept in a floating state. The particle size of the powdery thermoplastic resin 12 is generally about 10 to 200 μm. The long fibers 11 introduced into the fluidized bed 30 are impregnated with the powdery thermoplastic resin 12 in a floating state.

熱可塑性樹脂12としては、塩化ビニル樹脂、塩素化塩
化ビニル樹脂、ポリエチレン、ポリプロピレン、アクリ
ル樹脂、ナイロン樹脂、ポリフェニレンサルファイドや
ポリエーテルスルフォンなどのエンジニアリング樹脂等
が用いられる。As the thermoplastic resin 12, a vinyl chloride resin, a chlorinated vinyl chloride resin, polyethylene, polypropylene, an acrylic resin, a nylon resin, an engineering resin such as polyphenylene sulfide or polyether sulfone, or the like is used.

上記の長繊維11は、熱可塑性樹脂12に対して理論上は
90容量％まで含有され得るが、通常、60容量％以下の範
囲で使用するのが好ましい。長繊維11が熱可塑性樹脂12
に対して60％容量％を越えると、衝撃で割れが発生し易
くなる。The above long fiber 11 is theoretically different from the thermoplastic resin 12.
Although it may be contained up to 90% by volume, it is usually preferable to use it in the range of 60% by volume or less. Long fiber 11 is thermoplastic resin 12
On the other hand, if it exceeds 60% by volume, cracking tends to occur due to impact.

粉末状の熱可塑性樹脂12が含浸された長繊維11は、加
熱炉40に通されそこで含浸された粉末状の熱可塑性樹脂
12が加熱され溶融合着し、さらに一対の加熱ピンチロー
ル41により熱圧着され内部まで均一に含浸されるととも
に厚み調整がなされる。そして、一対の引取ピンチロー
ル50により引き取られる。この場合、一対の加熱ピンチ
ロール41は一組配置されてもよく、複数組配置されても
よい。図においては二組配置されている。The long fibers 11 impregnated with the powdery thermoplastic resin 12 are passed through a heating furnace 40 and impregnated therein with the powdery thermoplastic resin 12.
12 is heated and melt-bonded, and further thermocompression-bonded by a pair of heating pinch rolls 41 to uniformly impregnate the inside, and the thickness is adjusted. Then, it is taken up by the pair of take-up pinch rolls 50. In this case, one pair of heating pinch rolls 41 may be arranged, or a plurality of pairs may be arranged. Two sets are arranged in the figure.

上記の一対の加熱ピンチロール41と加熱炉40との配置
を逆にして、先に一対の加熱ピンチロール41で熱圧着し
た後加熱炉40で加熱してもよい。このようにして帯状芯
材10が形成される。帯状芯材10は、図のように一旦巻き
取ってもよいが、巻き取ることなく次の工程へ連続させ
てもよい。The arrangement of the above-mentioned pair of heating pinch rolls 41 and the heating furnace 40 may be reversed, and the pair of heating pinch rolls 41 may be thermocompression-bonded first and then heated in the heating furnace 40. In this way, the strip-shaped core material 10 is formed. The strip-shaped core material 10 may be once wound as shown in the drawing, but may be continuously wound to the next step without being wound.

次いで、帯状芯材10は、第２図に示すように、加熱フ
ォーミング装置60により熱可塑性樹脂12の軟化温度以上
の温度に加熱軟化され、第３図に示すように、ループ型
の筒状に形成された樋耳部芯材10″と溝状に形成された
樋本体部芯材10′からなる軒樋状の補強芯材（帯状芯
材）10に賦形される。引き続いて補強芯材の加熱圧着装
置61により樋耳部芯材10″の終縁部10が樋本体部芯材
10′に重ね合わされた状態にて熱接着され固定され、引
き続いて冷却フォーミング装置12により全体が冷却され
る。Next, as shown in FIG. 2, the strip-shaped core material 10 is heated and softened by the heating forming device 60 to a temperature equal to or higher than the softening temperature of the thermoplastic resin 12, and as shown in FIG. It is shaped into an eaves trough-shaped reinforcing core material (strip-shaped core material) 10 composed of the formed trough core material 10 ″ and the groove-shaped trough body core material 10 ′. The end edge portion 10 of the trough core material 10 ″ by the thermocompression bonding device 61 of the trough body core material
It is heat-bonded and fixed in a state of being superposed on 10 ', and subsequently the whole is cooled by the cooling forming device 12.

樋耳部芯材10″の終縁部10を樋本体部芯材10′に接
着固定する方法としては、上記の加熱圧着装置61による
方法以外に接着剤を用いる方法も採用することができ
る。また、加熱フォーミング装置60及び補強芯材の加熱
圧着装置61により賦形された補強芯材10は、上記のよう
に冷却フォーミング装置62により冷却した方が次のクロ
スヘッド金型への導入が円滑になし得て好ましいが、賦
形された補強芯材10は冷却しなくてもよい。As a method for adhering and fixing the end edge portion 10 of the trough core material 10 ″ to the trough body core material 10 ′, a method using an adhesive can be used in addition to the above method using the thermocompression bonding apparatus 61. In addition, the reinforcing core material 10 shaped by the heating forming device 60 and the thermocompression bonding device 61 of the reinforcing core material can be smoothly introduced into the next crosshead mold when cooled by the cooling forming device 62 as described above. However, the shaped reinforcing core material 10 does not need to be cooled.

このように賦形された補強芯材20は、引き続いて押出
機71のクロスヘッド金型70に導入され、そこでクロスヘ
ッド金型70から溶融押出される熱可塑性樹脂20が、樋耳
部芯材10″の内側を除く補強芯材10の全面に被覆され
る。この際、補強芯材10中の熱可塑性樹脂12はクロスヘ
ッド金型70の中で軟化又は溶融され、これに溶融押出被
覆される熱可塑性樹脂20が融着し一体化される。この場
合、ループ型の筒状に形成された樋耳部芯材10″の内側
の中空部には熱可塑性樹脂20が被覆されないので、樋耳
部芯材10″の内側が露出した状態となっている。The reinforcing core material 20 shaped in this way is subsequently introduced into the crosshead mold 70 of the extruder 71, and the thermoplastic resin 20 melt-extruded from the crosshead mold 70 there is a trough core material. The entire surface of the reinforcing core material 10 excluding the inside of 10 ″ is coated. At this time, the thermoplastic resin 12 in the reinforcing core material 10 is softened or melted in the crosshead mold 70, and is melt-extruded and coated. The thermoplastic resin 20 is fused and integrated. In this case, since the hollow resin inside the trough core material 10 ″ formed in the shape of a loop is not covered with the thermoplastic resin 20, The inner side of the ear core material 10 ″ is exposed.

被覆用の熱可塑性樹脂20としては、塩化ビニル樹脂、
塩素化塩化ビニル樹脂、アクリル樹脂、ナイロン樹脂等
の耐候性に良い樹脂が用いられる。また、クロスヘッド
金型70のスリット間隙及びランド部の長さは、製品厚
み、被覆用の熱可塑性樹脂、押出装置、押出速度等によ
り適宜定められる。補強芯材10と熱可塑性樹脂20との接
着性が悪い場合は、補強芯材10の表面に接着剤を塗布し
ておき、これに熱可塑性樹脂20が押出被覆される。As the thermoplastic resin 20 for coating, vinyl chloride resin,
A resin having good weather resistance such as a chlorinated vinyl chloride resin, an acrylic resin, and a nylon resin is used. Further, the slit gap and the length of the land portion of the crosshead mold 70 are appropriately determined depending on the product thickness, the thermoplastic resin for coating, the extrusion device, the extrusion speed, and the like. When the adhesion between the reinforcing core material 10 and the thermoplastic resin 20 is poor, an adhesive is applied to the surface of the reinforcing core material 10 and the thermoplastic resin 20 is extrusion-coated on the surface.

その後、冷却金型等からなるサイジング装置80により
表面仕上げを行い冷却して、カタピラ式引張機等の引張
装置90で引き取り、第３図に示すような樋本体部30と樋
耳部40とからなる繊維補強熱可塑性樹脂製の軒樋が製造
される。After that, the surface is finished by a sizing device 80 such as a cooling mold, cooled, and taken up by a pulling device 90 such as a caterpillar pulling machine, from the gutter body 30 and the gutter ear 40 as shown in FIG. An eaves gutter made of fiber-reinforced thermoplastic resin is manufactured.

製造される軒樋の樋耳部40の形状は、第３図に示す四
角型のほか丸型、或いは第４図（イ）〜（エ）に示すよ
うな鉤状の係止部41を有する筒状に形成することができ
る。このように係止部41を有する樋耳部40が形成されて
いると、樋耳部40への取付金具の係止が良好に行われ、
取付金具がより抜けにくくなる。The shape of the gutter ear portion 40 of the eaves trough to be manufactured has a square shape in addition to the square shape shown in FIG. 3, or a hook-shaped engaging portion 41 as shown in FIGS. 4 (a) to 4 (d). It can be formed in a tubular shape. When the trough portion 40 having the locking portion 41 is formed as described above, the fitting of the mounting bracket to the trough portion 40 is favorably performed,
The mounting bracket will not come off easily.

（作用） 本発明方法によれば、連続した多数の長繊維からなる
補強繊維材を流動床に導入し解繊状態にて粉末状の熱可
塑製樹脂を含浸してなる帯状芯材を用いて得られた補強
芯材の樋耳部芯材が、ループ状型の筒状に形成され、そ
の終端部が樋本体部芯材に重ね合わされた状態にて接着
されて固定されるので、終端部の補強芯材は樋本体部と
樋耳部とで一体的に連続した状態となり、補強芯材で強
化した従来の軒樋において弱かった補強芯材の終端部付
近の樋耳部が、樋本体部と同様に充分に強化される。(Operation) According to the method of the present invention, a strip-shaped core material obtained by introducing a reinforcing fiber material composed of a large number of continuous long fibers into a fluidized bed and impregnating a powdery thermoplastic resin in a defibrated state is used. The trough core material of the obtained reinforcing core material is formed into a loop-shaped tubular shape, and its end portion is bonded and fixed in a state of being superposed on the trough body core material. The reinforcing core material of the gutter body and the gutter ear are in a continuous state, and the gutter ear portion near the end of the reinforcing core material, which was weak in the conventional eaves trough reinforced with the reinforcing core material, is the gutter body. It is fully strengthened just like the parts.

また、本発明方法によれば、上記のように形成された
軒樋状の補強芯材が押出機のクロスヘッド金型に導入さ
れ、樋耳部芯材の内側を除く補強芯材の全面に熱可塑製
樹脂が溶融押出被覆され一体化される。このように、樋
耳部芯材の内側を除いてその外側のみに熱可塑製樹脂が
押出被覆される場合は、外側は均一な肉厚に押出被覆す
ることが容易である。Further, according to the method of the present invention, the eaves trough-shaped reinforcing core material formed as described above is introduced into the crosshead mold of the extruder, and the entire surface of the reinforcing core material excluding the inner side of the trough core material. The thermoplastic resin is melt extrusion coated and integrated. In this way, when the thermoplastic resin is extrusion-coated only on the outside of the trough core except for the inside, it is easy to coat the outside with a uniform thickness.

また、樋耳部の形状を種々の形状に変えても、樋耳部
が吹均一に変形して押出されることがなく、樋耳部の形
状を所望の形状に自由に変更することが可能となる。Also, even if the shape of the gutter ear part is changed to various shapes, the gutter ear part is not uniformly deformed and extruded, and the shape of the gutter ear part can be freely changed to a desired shape. Becomes

（実施例） 以下、本発明の実施例及び比較例を示す。(Example) Hereinafter, the Example and comparative example of this invention are shown.

実施例１ 本実施例では、第１図及び第２図に示す方法で、第３
図に示す軒樋を製造した。Example 1 In this example, the method shown in FIG. 1 and FIG.
The eaves gutter shown in the figure was manufactured.

先ず、ガラスロービング（＃4400:日東紡製）11を長
手方向に20本配列させて流動床30に導入し、そこで解繊
しながら空気により吹き上げられて浮遊状態にある塩化
ビニル樹脂配合粉（TK−400:信越化学製）12を流動含浸
させ、これを加熱炉40に通して上記樹脂配合粉を190℃
に加熱し、引き続いて表面温度200℃の一対の加熱ピン
チロール41に通し熱圧着して完全に溶融させ、厚さ0.6m
m、幅300mm、ガラスロービング含有量30容量％の帯状芯
材10を作成した。First, 20 glass rovings (# 4400: manufactured by Nitto Boseki) 11 are arranged in the longitudinal direction and introduced into the fluidized bed 30, and while being defibrated, they are blown up by air while being blown up by air, and are in a floating state. (-400: manufactured by Shin-Etsu Chemical Co., Ltd.) 12 is fluidized and impregnated, and this is passed through a heating furnace 40 so that the resin blended powder is heated to 190 ° C
Then, it is passed through a pair of heating pinch rolls 41 with a surface temperature of 200 ° C and thermocompression-bonded to completely melt it.
A strip-shaped core material 10 having m, a width of 300 mm, and a glass roving content of 30% by volume was prepared.

この帯状芯材10を加熱フォーミング装置60により80℃
に加熱軟化させ、第３図に示すように、ループ型の筒状
に形成された樋耳部芯材10″と溝状に形成された樋本体
部芯材10′からなる軒樋状の補強芯材10に賦形し、引き
続き加熱圧着装置61により樋耳部芯材10″の終端部10
を樋本体部芯材10′に重ね合わされた状態にて熱接着さ
せた後冷却した。引き続いて、賦形された補強芯材10を
押出機のクロスヘッド金型70に導入し、この樋耳部芯材
10″の内側を除く補強芯材（10の全面に平均重合度1050
の塩化ビニル樹脂配合物20を185℃で0.5mmの厚さに溶融
押出して被覆した。This strip-shaped core material 10 is heated to 80 ° C. by a heating forming device 60.
As shown in FIG. 3, it is softened by heating, and eaves trough-shaped reinforcement is formed by a loop-shaped tubular trough core material 10 ″ and a groove-shaped trough body core material 10 ′. Shaped on the core material 10, and then using the thermocompression bonding device 61, the end portion 10 of the trough core material 10 ″.
Was heat-bonded in a state of being superposed on the trough body core material 10 ', and then cooled. Subsequently, the shaped reinforcing core material 10 was introduced into the crosshead mold 70 of the extruder, and the trough core material was introduced.
Reinforcement core except the inside of 10 ″ (average degree of polymerization 1050 on the entire surface of 10
Vinyl chloride resin formulation 20 of was melt extruded and coated at 185 ° C. to a thickness of 0.5 mm.

次いで、サイジング装置80により表面仕上げを行い、
冷却して引張装置90で引き取り、第３図に示すように軒
本体部30と軒耳部40とからなる繊維補強合成樹脂製の長
尺軒樋を製造した。Next, surface finishing is performed by the sizing device 80,
After cooling and pulling with a tension device 90, a long eaves gutter made of fiber reinforced synthetic resin composed of an eaves main body 30 and an eaves ear 40 was manufactured as shown in FIG.

この軒樋の樋耳部の形状に不均一な変形は認められず
良好で、被覆された塩化ビニル樹脂の厚みも均一であっ
た。また、この軒樋を4mの長さに裁断して試験片とし、
これを80℃のオーブン中に５時間放置した後、樋耳部の
変形状態を観察したところ、樋耳部の熱変形は非常に小
さいものであった。The shape of the gutter ear of this eaves gutter was good without any uneven deformation, and the thickness of the coated vinyl chloride resin was uniform. In addition, this eaves gutter was cut into a length of 4 m to make a test piece,
After this was left in an oven at 80 ° C. for 5 hours, the deformed state of the gutter was observed, and the thermal deformation of the gutter was very small.

実施例２ 樋耳部の形状を第４図（イ）〜（ニ）に示す形状に変
更したこと以外は、実施例１と同様に行った。いずれの
軒樋についても、樋耳部の形状に不均一な変形は認めら
れず、被覆された塩化ビニル樹脂の厚みも均一であっ
た。また、樋耳部の熱変形も非常に小さいものであっ
た。Example 2 The same procedure as in Example 1 was carried out except that the shape of the trough portion was changed to the shapes shown in FIGS. 4 (a) to 4 (d). No uneven deformation was observed in the shape of the gutter ear part in any of the eaves gutters, and the thickness of the coated vinyl chloride resin was uniform. Also, the thermal deformation of the gutter ear was very small.

比較例１ 樋耳部の補強芯材の終端部が、第５図に示すように樋
耳部内で少し離れた状態になるように成形したこと、及
び樋耳部芯材の内側にも塩化ビニル樹脂配合物を押出被
覆したこと以外は、実施例１と同様に行った。この場合
は、樋耳部芯材の内側に被覆された塩化ビニル樹脂の厚
みは不均一であり、また樋耳部、特に補強芯材の終端部
付近の樋耳部の熱変形は非常に大きいものであった。Comparative Example 1 As shown in FIG. 5, the terminal end of the reinforcing core material of the gutter ear was molded so that it was slightly separated in the gutter ear, and vinyl chloride was also formed inside the gutter ear core material. Example 1 was repeated except that the resin composition was extrusion coated. In this case, the thickness of the vinyl chloride resin coated on the inner side of the trough core is uneven, and the thermal deformation of the trough, especially the trough near the end of the reinforcing core, is very large. It was a thing.

比較例２ 樋耳部の補強芯材の終端部が、第５図に示すように樋
耳部内で少し離れた状態になるように成形したこと、及
び樋耳部芯材の内側にも塩化ビニル樹脂配合物を押出被
覆したこと以外は、実施例２と同様に行った。この場合
も、樋耳部芯材の内側に被覆された塩化ビニル樹脂の厚
みは不均一であり、また樋耳部、特に補強芯材の終端部
付近の樋耳部の熱変形は非常に大きいものであった。Comparative Example 2 Molded so that the end portion of the reinforcing core material of the gutter ear part was slightly separated in the gutter ear part as shown in FIG. 5, and vinyl chloride was also formed inside the gutter ear core material. Example 2 was repeated except that the resin composition was extrusion coated. Also in this case, the thickness of the vinyl chloride resin coated on the inner side of the trough core is not uniform, and the thermal deformation of the trough, especially the trough near the end of the reinforcing core, is very large. It was a thing.

（発明の効果） 上述の通り、本発明軒樋の製造方法によれば、連続し
た多数の長繊維からなる補強繊維材を流動床に導入し解
繊状態にて粉末状の熱可塑性樹脂を含浸してなる帯状芯
材を用いて得られた補強芯材の樋耳部芯材が、ループ状
型の筒状に形成され、その終端部が樋本体部芯材に重ね
合わされた状態にて接着されているので、従来の補強芯
材で強化した軒樋に較べ、樋耳部が充分に強化される。
また、樋耳部芯材の内側を除く補強芯材の全面に熱可塑
性樹脂が溶融押出被覆され一体化されるので、従来の補
強芯材で強化した軒樋の製造方法に較べ、熱可塑性樹脂
を均一な肉厚に押出被覆することが容易である。(Effects of the Invention) As described above, according to the method for manufacturing an eaves gutter of the present invention, a reinforcing fiber material composed of a large number of continuous long fibers is introduced into a fluidized bed and impregnated with a powdery thermoplastic resin in a defibrated state. The trough core material of the reinforcing core material obtained by using the strip-shaped core material is formed into a loop-shaped tube, and the end portion of the trough core material is bonded to the trough body core material in a superposed state. Therefore, the gutter ear part is sufficiently strengthened as compared with the eaves gutter reinforced with the conventional reinforcing core material.
In addition, since the thermoplastic resin is melt-extruded and coated on the entire surface of the reinforcing core material excluding the inside of the trough core material, the thermoplastic resin is more thermoplastic than the conventional method for manufacturing eaves trough reinforced with the reinforcing core material. It is easy to apply extrusion coating to a uniform wall thickness.

さらに、本発明によれば、樋耳部の形状を種々の形状
に変えても、樋耳部が不均一に変形して押出されること
がないので、樋耳部の形状を取付金具（樋受け金具又は
樋吊り金具）の係止が容易なように、自由に変更するこ
とができるという利点をもっている。Further, according to the present invention, even if the shape of the gutter ear part is changed to various shapes, the gutter ear part is not deformed unevenly and is not extruded. It has the advantage that it can be freely changed so that the catch fitting or the gutter hanging fitting) can be easily locked.

したがって、本発明方法で得られる軒樋は、直射日光
に晒される高温環境下で使用しても樋耳部の変形がな
く、樋耳部の開きや取付金具の抜けが防止され、樋耳部
の機能が充分に発揮され、また耐久性に優れる。Therefore, the eaves gutter obtained by the method of the present invention has no deformation of the gutter ear portion even when used in a high temperature environment exposed to direct sunlight, prevents the gutter ear portion from opening and prevents the mounting bracket from coming off, and the gutter ear portion The function of is fully exerted and it has excellent durability.

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

第１図及び第２図は本発明方法の一例を示す概略図、第
３図は本発明方法により得られた軒樋の一例を示す一部
切欠横断面図、第４図（イ）〜（ニ）は本発明方法によ
り得られた軒樋の他の例を示す一部切欠横断面図、第５
図は従来の軒樋の一例を示す一部切欠横断面図である。 10……帯状芯材（補強芯材）、10′……樋本体部芯材、
10″……樋耳部芯材、10……樋耳部芯材の終端部、11
……補強繊維材（ガラス長繊維）、12……含浸用の合成
樹脂（粉末状塩化ビニル樹脂）20……被覆用の熱可塑性
樹脂（塩化ビニル樹脂）、30……流動床、40……加熱
炉、41……加熱ピンチロール、50……引取ピンチロー
ル、60……加熱フォーミング装置、62……熱圧着装置、
63……冷却フォーミング装置、70……押出機のクロスヘ
ッド金型、80……サイジング装置、90……引張装置。1 and 2 are schematic views showing an example of the method of the present invention, FIG. 3 is a partially cutaway cross-sectional view showing an example of an eaves gutter obtained by the method of the present invention, and FIGS. (D) is a partially cutaway cross-sectional view showing another example of eaves gutter obtained by the method of the present invention,
The figure is a partially cutaway transverse sectional view showing an example of a conventional eaves gutter. 10 …… Band-shaped core material (reinforcement core material), 10 ′ …… Gutter body core material,
10 ″ …… Gutter ear core material, 10 …… Gutter ear core material end portion, 11
...... Reinforcing fiber material (long glass fiber), 12 …… Synthetic resin for impregnation (powdered vinyl chloride resin) 20 ……, Thermoplastic resin for coating (vinyl chloride resin), 30 …… Fluidized bed, 40 …… Heating furnace, 41 …… Heating pinch roll, 50 …… Take-in pinch roll, 60 …… Heating forming device, 62 …… Thermo-compression bonding device,
63 …… Cooling forming device, 70 …… Extruder crosshead mold, 80 …… Sizing device, 90 …… Tensioning device.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】連続した多数の長繊維からなる補強繊維材
を流動床に導入し解繊状態にて粉末状の熱可塑性樹脂を
含浸してなる帯状芯材を用いて、樋耳部芯材がループ型
の筒状に形成されその終縁部が樋本体部芯材に重ね合わ
された状態にて接着された軒樋状の補強芯材を作り、こ
の補強芯材を押打機のクロスヘッド金型に導入し、樋耳
部芯材の内側を除く補強芯材の全面に熱可塑性樹脂を溶
融押出被覆し一体化することを特徴とする軒樋の製造方
法。1. A trough core material using a strip-shaped core material obtained by introducing a reinforcing fiber material comprising a large number of continuous long fibers into a fluidized bed and impregnating a powdery thermoplastic resin in a defibrated state. Is formed into a loop-shaped cylinder, and its end edge is bonded to the gutter body core material in a state of being laminated to make an eaves-shaped reinforcement core material, and this reinforcement core material is used as the crosshead of the punching machine. A method for manufacturing eaves gutter, which comprises introducing the thermoplastic resin into a mold and melt-extruding and coating a thermoplastic resin on the entire surface of the reinforcing core material excluding the inside of the trough core material.