JP2000204726A - Rainwater gutter - Google Patents
Rainwater gutterInfo
- Publication number
- JP2000204726A JP2000204726A JP11007959A JP795999A JP2000204726A JP 2000204726 A JP2000204726 A JP 2000204726A JP 11007959 A JP11007959 A JP 11007959A JP 795999 A JP795999 A JP 795999A JP 2000204726 A JP2000204726 A JP 2000204726A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- resin
- core layer
- thermoplastic elastomer
- core
- 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.)
- Withdrawn
Links
- 239000010410 layer Substances 0.000 claims abstract description 91
- 229920005989 resin Polymers 0.000 claims abstract description 65
- 239000011347 resin Substances 0.000 claims abstract description 65
- 239000012792 core layer Substances 0.000 claims abstract description 23
- 229920002725 thermoplastic elastomer Polymers 0.000 claims abstract description 19
- 239000011248 coating agent Substances 0.000 claims description 34
- 238000000576 coating method Methods 0.000 claims description 34
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000000806 elastomer Substances 0.000 claims description 9
- 229920000098 polyolefin Polymers 0.000 claims description 8
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000012644 addition polymerization Methods 0.000 claims description 5
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 229920001400 block copolymer Polymers 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 2
- 239000011162 core material Substances 0.000 abstract description 33
- 230000008602 contraction Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract 3
- -1 polyethylene Polymers 0.000 description 9
- 229920001155 polypropylene Polymers 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 229920005992 thermoplastic resin Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004711 α-olefin Substances 0.000 description 3
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006124 polyolefin elastomer Polymers 0.000 description 2
- 229920005672 polyolefin resin Polymers 0.000 description 2
- 239000012783 reinforcing fiber Substances 0.000 description 2
- 238000004513 sizing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000454 talc Substances 0.000 description 2
- 229910052623 talc Inorganic materials 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 239000000805 composite resin Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000012796 inorganic flame retardant Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012766 organic filler Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920006132 styrene block copolymer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、芯材層と、この
芯材層の両面を被覆する樹脂からなる被覆樹脂層とを備
えた雨樋に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rain gutter having a core layer and a coating resin layer made of a resin for coating both surfaces of the core layer.
【０００２】[0002]
【従来の技術】従来の雨樋は、硬質塩化ビニル樹脂で成
形されたものが一般的である。しかし、塩化ビニル樹脂
は線膨張率が高いために、継手等で建物に固定された後
に、夏冬・昼夜の温度変化による伸縮で破損したり、変
形したりする場合があった。2. Description of the Related Art Conventional rain gutters are generally formed of hard vinyl chloride resin. However, since the vinyl chloride resin has a high coefficient of linear expansion, it may be damaged or deformed by expansion and contraction due to temperature changes in summer, winter, day and night after being fixed to a building with a joint or the like.
【０００３】そこで、このような、温度変化を原因とす
る破損・変形を防止するために、金属板芯材層とこの芯
材層の内外両面に合成樹脂を被覆する成形体からなる雨
樋が提案されている（特開昭５７−３３６６０号）。Therefore, in order to prevent such breakage and deformation due to temperature change, a rain gutter composed of a metal plate core layer and a molded body in which both inner and outer surfaces of the core layer are coated with a synthetic resin is used. It has been proposed (JP-A-57-33660).
【０００４】[0004]
【発明が解決しようとする課題】しかし、上記の雨樋に
あっては、輸送時や施工時に加わる衝撃に対して、弾性
率の低い被覆樹脂と弾性率の高い芯材層との間で応力集
中が発生し、被覆樹脂と芯材層とが剥離する場合があ
る。特に、他材料との融着性に乏しいポリオレフィン系
樹脂を被覆した場合に、この傾向は顕著である。However, in the above-mentioned rain gutter, a stress applied between a coating resin having a low elastic modulus and a core material layer having a high elastic modulus with respect to an impact applied during transportation or construction. Concentration may occur, and the coating resin and the core material layer may peel off. In particular, this tendency is remarkable when a polyolefin resin having poor fusion with other materials is coated.
【０００５】この発明は、上記問題に鑑みてなされたも
のであり、輸送時、施工時等に衝撃が加わっても芯材層
と被覆樹脂とが剥離しない雨樋を提供することを目的と
する。[0005] The present invention has been made in view of the above problems, and has as its object to provide a rain gutter in which a core layer and a coating resin are not separated from each other even when an impact is applied during transportation, construction, or the like. .
【０００６】[0006]
【課題を解決するための手段】上記課題を解決するため
に、請求項１に記載の発明は、芯材層と、この芯材層の
両面を被覆する樹脂からなる樹脂層とを備えた雨樋にお
いて、前記芯材層と前記樹脂層との間に熱可塑性エラス
トマーからなる中間層を設けたことを特徴とする。In order to solve the above-mentioned problems, the invention according to claim 1 provides a rain layer having a core material layer and a resin layer made of a resin covering both surfaces of the core material layer. In the gutter, an intermediate layer made of a thermoplastic elastomer is provided between the core material layer and the resin layer.
【０００７】請求項２に記載の発明は、前記中間層は、
引張弾性率が１．０ＧＰａ以下の熱可塑性エラストマー
からなることを特徴とする。[0007] According to a second aspect of the present invention, the intermediate layer comprises:
It is characterized by comprising a thermoplastic elastomer having a tensile modulus of 1.0 GPa or less.
【０００８】請求項３に記載の発明は、前記中間層は、
厚みが２０μｍ〜５００μｍであることを特徴とする。[0008] According to a third aspect of the present invention, the intermediate layer comprises:
The thickness is 20 μm to 500 μm.
【０００９】請求項４に記載の発明は、前記熱可塑性エ
ラストマーは、スチレン−エチレン・ジエン−スチレン
系ブロック共重合体、ポリオレフィン系エラストマー、
塩素化ポリオレフィン系エラストマー、若しくはそれら
の不飽和カルボン酸誘導体、若しくはアルコキシシラン
誘導体が付加重合された重合体、若しくはそれらの混合
物であることを特徴とする。According to a fourth aspect of the present invention, the thermoplastic elastomer is a styrene-ethylene-diene-styrene-based block copolymer, a polyolefin-based elastomer,
A chlorinated polyolefin-based elastomer, a polymer obtained by addition polymerization of an unsaturated carboxylic acid derivative or an alkoxysilane derivative thereof, or a mixture thereof.
【００１０】[0010]
【作用】請求項１の発明によれば、芯材層と樹脂層との
間に熱可塑性エラストマーからなる中間層を設けたか
ら、衝撃による芯材と被覆樹脂との剥離を抑制すること
ができる。According to the first aspect of the present invention, since the intermediate layer made of a thermoplastic elastomer is provided between the core material layer and the resin layer, the core material and the coating resin can be prevented from peeling off due to impact.
【００１１】請求項２の発明によれば、中間層は、引張
弾性率が１．０ＧＰａ以下の熱可塑性エラストマーから
なるから、芯材層と樹脂層との間に集中する衝撃時の応
力を緩和することができる。According to the second aspect of the present invention, since the intermediate layer is made of a thermoplastic elastomer having a tensile elasticity of 1.0 GPa or less, stress at the time of impact concentrated between the core material layer and the resin layer is reduced. can do.
【００１２】請求項３の発明によれば、中間層は、厚み
が２０μｍ〜５００μｍであるから、衝撃時に加わる応
力を緩和するのに充分な厚みであり、しかも凝集破壊を
起こしにくく、熱伸縮等があっても芯材層と樹脂層とが
剥離しない。According to the third aspect of the present invention, since the thickness of the intermediate layer is from 20 μm to 500 μm, the thickness is sufficient to relieve the stress applied at the time of impact. Even if there is, the core material layer and the resin layer do not peel off.
【００１３】請求項４の発明によれば、熱可塑性エラス
トマーは、スチレン−エチレン・ジエン−スチレン系ブ
ロック共重合体、ポリオレフィン系エラストマー、塩素
化ポリオレフィン系エラストマー、若しくはそれらの不
飽和カルボン酸誘導体、若しくはアルコキシシラン誘導
体が付加重合された重合体、若しくはそれらの混合物で
あるから、芯材層と化学結合することが可能であり、且
つ、被覆樹脂層の樹脂と相溶性がある。しかも、芯材層
と樹脂層との間に集中する衝撃時の応力を緩和すること
ができる。According to the invention of claim 4, the thermoplastic elastomer is a styrene-ethylene-diene-styrene-based block copolymer, a polyolefin-based elastomer, a chlorinated polyolefin-based elastomer, or an unsaturated carboxylic acid derivative thereof, or Since the alkoxysilane derivative is a polymer obtained by addition polymerization or a mixture thereof, it can be chemically bonded to the core material layer and is compatible with the resin of the coating resin layer. In addition, stress at the time of impact concentrated between the core material layer and the resin layer can be reduced.
【００１４】[0014]
【発明の実施の形態】以下、この発明に係る雨樋の実施
の形態を図面に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a gutter according to the present invention will be described below with reference to the drawings.
【００１５】図１に示す雨樋１は、断面が略コ字状に成
形されており、芯材層１と、芯材層１の両面を被覆する
樹脂からなる被覆樹脂層２と、芯材層１と被覆樹脂層２
との間に設けられ熱可塑性エラストマーからなる中間層
３とから構成されている。なお、図面上は、理解し易く
するため、厚さの割合を大きくしてある。また、雨樋の
形状はとくに限定されるものではなく、屋根の水を集め
て流すこと出来れば充分であり、上記のように断面が略
コ字状になったものの他、いかなる形状のものでもよ
い。A rain gutter 1 shown in FIG. 1 has a substantially U-shaped cross section, and includes a core material layer 1, a coating resin layer 2 made of a resin covering both surfaces of the core material layer 1, and a core material. Layer 1 and coating resin layer 2
And an intermediate layer 3 made of a thermoplastic elastomer. In the drawings, the thickness ratio is increased for easy understanding. In addition, the shape of the rain gutter is not particularly limited, and it is sufficient if the water on the roof can be collected and allowed to flow, and any shape other than that having a substantially U-shaped cross section as described above can be used. Good.
【００１６】芯材層１は、熱伸縮を抑制するためのもの
であって、例えば、金属板、強化繊維複合樹脂シート、
無機フィーラー充填熱可塑性樹脂シート等を用いる。The core layer 1 is for suppressing thermal expansion and contraction, and includes, for example, a metal plate, a reinforcing fiber composite resin sheet,
An inorganic feeler-filled thermoplastic resin sheet or the like is used.
【００１７】被覆樹脂層２には、α−オレフィンの単独
重合体、又は、α−オレフィンとこれに共重合可能な不
飽和基を有するモノマーとの重合体等のポリオレフィン
系樹脂を用いる。ここで、α−オレフィンとしては、例
えば、ポリエチレン、ポリプロピレン等が挙げられる。For the coating resin layer 2, a polyolefin resin such as a homopolymer of α-olefin or a polymer of α-olefin and a monomer having an unsaturated group copolymerizable therewith is used. Here, examples of the α-olefin include polyethylene and polypropylene.
【００１８】被覆樹脂層２に添加される添加剤には、特
に限定はないが、以下のようなものが挙げられる。 A充填材：マイカ、タルク、単カル等の無機充填材、木
粉等の有機充填材等。 B難燃材：種々のハロゲン系、ノンハロゲン系、無機系
難燃材。 C酸化防止材：ヒンダードアミン等。 D改質剤：エラストマー等。 E強化繊維：炭素繊維、ガラス繊維等の無機繊維、アラ
ミド繊維、ナイロン繊維等の有機繊維。金属繊維等、熱
可塑性プラスチックの補強に通常用いられるもの。The additives added to the coating resin layer 2 are not particularly limited, but include the following. A filler: Inorganic filler such as mica, talc, single talc, etc., and organic filler such as wood flour. B Flame retardants: Various halogen-based, non-halogen, and inorganic flame retardants. C antioxidant: hindered amine and the like. D modifier: elastomer and the like. E Reinforcing fiber: inorganic fiber such as carbon fiber and glass fiber, and organic fiber such as aramid fiber and nylon fiber. What is usually used for reinforcing thermoplastics such as metal fibers.
【００１９】また、耐候性能等を向上させるために、被
覆樹脂層の上にさらに高耐候樹脂を被覆してもよい。In order to improve the weather resistance and the like, the coating resin layer may be further coated with a high weather resistance resin.
【００２０】中間層３に用いられる熱可塑性エラストマ
ーとしては、弾性率が１．０ＧＰａ以下のもの、例え
ば、スチレン−エチレン・ジエン−スチレン系ブロック
共重合体、ポリオレフィン系エラストマー、塩素化ポリ
オレフィン系エラストマー、若しくはこれらの不飽和カ
ルボン酸誘導体、若しくはアルコキシシラン誘導体が付
加重合された重合体、若しくはこれらの混合物を用い
る。弾性率が１．０ＧＰａを超えると、芯材層と被覆樹
脂層との間に集中する衝撃の応力を緩和することが出来
ないからである。The thermoplastic elastomer used for the intermediate layer 3 has an elastic modulus of 1.0 GPa or less, for example, styrene-ethylene-diene-styrene block copolymer, polyolefin elastomer, chlorinated polyolefin elastomer, Alternatively, a polymer obtained by addition polymerization of these unsaturated carboxylic acid derivatives or alkoxysilane derivatives, or a mixture thereof is used. If the elastic modulus exceeds 1.0 GPa, it is not possible to alleviate the impact stress concentrated between the core material layer and the coating resin layer.
【００２１】また、中間層３の厚みは、２０μｍ〜５０
０μｍに設定される。厚みが５００μｍを超えると凝集
破壊を起こしやすくなり、熱伸縮すると芯材層１と被覆
樹脂層２とが剥離する原因となり、他方、２０μｍに満
たないと、衝撃を緩和する能力が低下するからである。The thickness of the intermediate layer 3 is 20 μm to 50 μm.
It is set to 0 μm. When the thickness exceeds 500 μm, cohesive failure tends to occur, and when it expands and contracts thermally, the core material layer 1 and the coating resin layer 2 are separated. On the other hand, when the thickness is less than 20 μm, the ability to reduce impact is reduced. is there.
【００２２】次に、上記雨樋を製造する方法について、
図面に基づいて説明する。Next, a method for manufacturing the above-mentioned gutter will be described.
This will be described with reference to the drawings.
【００２３】雨樋を製造する装置１０は、図２に示すよ
うに、芯材層を押し出すロールフォーミング装置１１
と、被覆樹脂を押し出す被覆樹脂層押出機１２と、中間
層となる熱可塑性樹脂を押し出す中間層押出機１３と、
ロールフォーミング装置１１から押出される芯材層を雨
樋の形状に賦形するとともに被覆樹脂層押出機１２から
押出される被覆樹脂と中間層押出機１３から押出される
熱可塑性樹脂とを芯材層１に被覆成形する押出金型１４
と、押出金型１４から押出される芯材層を寸法制御しつ
つ冷却する冷却サイジング装置１５と、この芯材層を引
取る引取装置１６と、芯材層を所要の長さ寸法に切断す
る切断装置１７とから構成されている。As shown in FIG. 2, an apparatus 10 for manufacturing a rain gutter includes a roll forming apparatus 11 for extruding a core material layer.
A coating resin layer extruder 12 for extruding a coating resin, and an intermediate layer extruder 13 for extruding a thermoplastic resin to be an intermediate layer,
The core layer extruded from the roll forming device 11 is shaped into a rain gutter, and the core resin is extruded from the coated resin layer extruder 12 and the thermoplastic resin extruded from the intermediate layer extruder 13. Extrusion mold 14 for coating and forming layer 1
A cooling sizing device 15 for cooling the core layer extruded from the extrusion die 14 while controlling the size of the core layer, a take-off device 16 for taking the core layer, and cutting the core layer to a required length. And a cutting device 17.
【００２４】上記装置１０によって、雨樋を製造するに
は、まず、ロールフォーミング装置１１から押出金型１
４に芯材層１を押し出し、雨樋の形状に賦形する。In order to manufacture a rain gutter by the above-mentioned apparatus 10, first, the extrusion die 1 is rolled from the roll forming apparatus 11.
4, the core layer 1 is extruded and shaped into a rain gutter.
【００２５】この際、中間層押出機１３から熱可塑性エ
ラストマーを溶融混練しつつ押出させるようにして、芯
材層１の両面に被覆し、さらに、被覆樹脂層押出機１２
から被覆樹脂を溶融混練しつつ押出させるようにして、
中間層３の両外側に被覆樹脂を被覆させる。At this time, the thermoplastic elastomer is extruded while being melt-kneaded from the intermediate layer extruder 13 so as to cover both surfaces of the core material layer 1.
To extrude the coating resin while melting and kneading,
Both outer sides of the intermediate layer 3 are coated with a coating resin.
【００２６】次に、冷却サイジング装置１５で被覆樹脂
等を被覆した芯材層を寸法制御しながら冷却し、引取装
置１６で引き取るようにする。Next, the core material layer coated with the coating resin or the like is cooled by the cooling sizing device 15 while controlling the size, and is taken off by the take-off device 16.
【００２７】最後に、切断装置１７で、被覆樹脂等を被
覆した芯材層を所要の長さ寸法に切断することにより、
所望の雨樋を製造する。Finally, the cutting device 17 cuts the core material layer coated with the coating resin or the like into required length dimensions,
Produce the desired gutter.
【００２８】[0028]
【実施例】本発明の効果を確認するために、以下の実験
を行った。 〈実施例１〉図２に示すロールフォーミング装置１１か
ら表面をクロメート処理した亜鉛メッキ鋼板（日新製鋼
社製：厚み０．１８ｍｍ）を押出し、コ字状に賦形した
後、中間層の熱可塑性樹脂として、無水酸変性ポリプロ
ピレン（三井石油社製アドマーＱＢ５５０）を被覆し、
続けて被覆樹脂として、ポリプロピレン樹脂（三菱化学
社製ポリプロＥＡ９）を被覆した。このとき、中間層の
厚みを約０．１ｍｍ、被覆樹脂層の厚みを０．６ｍｍと
した。 〈実施例２〉熱可塑性樹脂としてエポキシ変性ポリプロ
ピレン樹脂（日本油脂製ブレンマーＣＰ１５）を用いた
他は実施例１と同様とした。 〈比較例１〉中間層の厚みを０．５ｍｍとした他は実施
例１と同様とした。 〈比較例２〉表面をクロメート処理した亜鉛メッキ鋼板
（日新製鋼社製：厚み０．１８ｍｍ）に厚み１０mｍの
無水酸変性ポリプロピレン（三井石油社製アドマーＱＢ
５５０）のフィルムを圧着させた後、ロールフォーミン
グ装置１１によりコ字状に賦形した後、被覆樹脂とし
て、ポリプロピレン樹脂（三菱化学社製ポリプロＥＡ
９）を被覆した。このとき、被覆樹脂層の厚みを０．６
ｍｍとした。EXAMPLES The following experiments were performed to confirm the effects of the present invention. <Example 1> A galvanized steel sheet (Nissin Steel Co., Ltd .: 0.18 mm thick) whose surface was chromated was extruded from the roll forming apparatus 11 shown in FIG. An acid anhydride-modified polypropylene (Admer QB550 manufactured by Mitsui Oil Co., Ltd.) is coated as a plastic resin,
Subsequently, a polypropylene resin (Polypro EA9 manufactured by Mitsubishi Chemical Corporation) was coated as a coating resin. At this time, the thickness of the intermediate layer was about 0.1 mm, and the thickness of the coating resin layer was 0.6 mm. <Example 2> The procedure of Example 1 was repeated except that an epoxy-modified polypropylene resin (Blenmer CP15 manufactured by NOF Corporation) was used as the thermoplastic resin. <Comparative Example 1> The same as Example 1 except that the thickness of the intermediate layer was 0.5 mm. <Comparative Example 2> A 10-mm-thick acid-modified polypropylene (Admer QB manufactured by Mitsui Oil Co., Ltd.) was applied to a zinc-plated steel sheet (manufactured by Nissin Steel Co., Ltd .: 0.18 mm thick) whose surface was chromate-treated.
550) is pressed and formed into a U-shape by the roll forming apparatus 11, and then, as a coating resin, a polypropylene resin (Polypropylene EA manufactured by Mitsubishi Chemical Corporation)
9) was coated. At this time, the thickness of the coating resin layer was set to 0.6.
mm.
【００２９】上記のようにして得られた成形体を３ｃｍ
角に切断し、デュポン衝撃装置により衝撃を加え、被覆
樹脂と芯材とが剥離するエネルギー量、被覆樹脂と芯材
との剪断剥離強度を測定し、中間層による衝撃吸収性を
評価した。The molded body obtained as described above is 3 cm
It was cut into corners, and an impact was applied with a Dupont impact device to measure the amount of energy at which the coating resin and the core material peeled off, and the shearing peel strength between the coating resin and the core material, and evaluated the impact absorption by the intermediate layer.
【００３０】その結果、図３に示すような結果が得られ
た。As a result, the result as shown in FIG. 3 was obtained.
【００３１】即ち、実施例１と比較例１との比較によ
り、比較例１のもののほうが剥離強度が小さくなってお
り（３５ｋｇｆ／ｃｍ2と１８ｋｇｆ／ｃｍ2）、中間層
の厚みが５００mｍを超えると芯材層と被覆樹脂層が剥
離し易くなることが確認された。That is, according to the comparison between Example 1 and Comparative Example 1, the peel strength of Comparative Example 1 is lower (35 kgf / cm 2 and 18 kgf / cm 2 ), and the thickness of the intermediate layer exceeds 500 mm. It was confirmed that the core material layer and the coating resin layer were easily peeled off.
【００３２】また、実施例１と比較例２との比較によ
り、比較例２のもののほうが剥離するエネルギー量が小
さくなっており（３．０Ｊと０．８Ｊ）、中間層の厚み
が２０mｍに満たないと衝撃を緩和する能力が低下する
ことが確認された。In comparison between Example 1 and Comparative Example 2, the energy of peeling was smaller in Comparative Example 2 (3.0 J and 0.8 J), and the thickness of the intermediate layer was less than 20 mm. Otherwise, it was confirmed that the ability to alleviate the impact was reduced.
【００３３】[0033]
【発明の効果】以上説明したように、請求項１の発明に
よれば、芯材層と、この芯材層の両面を被覆する樹脂か
らなる被覆樹脂層とを備えた雨樋において、前記芯材層
と前記被覆樹脂層との間に熱可塑性エラストマーからな
る中間層を設けたので、衝撃による芯材と被覆樹脂との
剥離を抑制することができる。As described above, according to the first aspect of the present invention, there is provided a rain gutter having a core material layer and a resin coating layer made of a resin covering both surfaces of the core material layer. Since the intermediate layer made of the thermoplastic elastomer is provided between the material layer and the coating resin layer, the separation between the core material and the coating resin due to impact can be suppressed.
【００３４】請求項２の発明によれば、前記中間層は、
引張弾性率が１．０ＧＰａ以下の熱可塑性エラストマー
からなるので、芯材層と樹脂層との間に集中する衝撃時
の応力を緩和することができる。According to the second aspect of the present invention, the intermediate layer comprises:
Since it is made of a thermoplastic elastomer having a tensile modulus of 1.0 GPa or less, stress at the time of impact concentrated between the core material layer and the resin layer can be reduced.
【００３５】請求項３の発明によれば、前記中間層は、
厚みが２０mｍ〜５００mｍであるので、衝撃時に加わる
応力を緩和するのに充分な厚みであり、しかも凝集破壊
を起こしにくく、熱伸縮等があっても芯材層と樹脂層と
が剥離しない。According to the invention of claim 3, the intermediate layer is
Since the thickness is 20 mm to 500 mm, the thickness is sufficient to relieve the stress applied at the time of impact, hardly causes cohesive failure, and the core material layer and the resin layer are not separated even if there is thermal expansion or contraction.
【００３６】請求項４の発明によれば、前記熱可塑性エ
ラストマーは、スチレン−エチレン・ジエン−スチレン
系ブロック共重合体、ポリオレフィン系エラストマー、
塩素化ポリオレフィン系エラストマー、若しくはそれら
の不飽和カルボン酸誘導体、若しくはアルコキシシラン
誘導体が付加重合された重合体、若しくはそれらの混合
物であるので、芯材層と化学結合することが可能であ
り、且つ、被覆樹脂層の樹脂と相溶性がある。しかも、
芯材層と樹脂層との間に集中する衝撃時の応力を緩和す
ることができる。According to the fourth aspect of the present invention, the thermoplastic elastomer includes a styrene-ethylene-diene-styrene-based block copolymer, a polyolefin-based elastomer,
Since the chlorinated polyolefin-based elastomer, or an unsaturated carboxylic acid derivative thereof, or a polymer obtained by addition polymerization of an alkoxysilane derivative, or a mixture thereof, it is possible to chemically bond to the core material layer, and Compatible with the resin of the coating resin layer. Moreover,
Stress at the time of impact concentrated between the core material layer and the resin layer can be reduced.
【図１】本発明に係る雨樋の断面図である。FIG. 1 is a sectional view of a rain gutter according to the present invention.
【図２】本発明に係る雨樋を製造する装置の概略平面図
である。FIG. 2 is a schematic plan view of an apparatus for manufacturing a rain gutter according to the present invention.
【図３】本発明に係る雨樋の実施例の結果を示す表であ
る。FIG. 3 is a table showing the results of an example of a rain gutter according to the present invention.
１ 芯材層 ２ 被覆樹脂層 ３ 中間層 1 core material layer 2 coating resin layer 3 intermediate layer
フロントページの続き Ｆターム(参考） 4F100 AB03 AB18 AH06D AH06E AK01B AK01C AK03D AK03E AK04D AK04E AK07 AK12D AK12E AK25D AK25E AK28D AK28E AL02D AL02E AL07 AL09D AL09E AT00A BA05 BA06 BA08 BA10B BA10C BA25D BA25E EH711 EJ691 GB07 JB16D JB16E JK06 JK07D JK07E YY00D YY00EContinued on front page F term (reference) 4F100 AB03 AB18 AH06D AH06E AK01B AK01C AK03D AK03E AK04D AK04E AK07 AK12D AK12E AK25D AK25E AK28DJ AK28E AL02D AL02E AL07 AL09D AL09E BA00 BA06 BA07 BA06 BA07
Claims (4)
脂からなる被覆樹脂層とを備えた雨樋において、 前記芯材層と前記被覆樹脂層との間に熱可塑性エラスト
マーからなる中間層を設けたことを特徴とする雨樋。1. A rain gutter having a core layer and a resin coating layer made of a resin coating both surfaces of the core layer, wherein a thermoplastic elastomer is provided between the core layer and the coating resin layer. A rain gutter comprising an intermediate layer.
以下の熱可塑性エラストマーからなることを特徴とする
請求項１に記載の雨樋。2. The intermediate layer has a tensile modulus of 1.0 GPa.
The gutter according to claim 1, wherein the gutter is made of the following thermoplastic elastomer.
ｍであることを特徴とする請求項１乃至請求項２のいず
れかに記載の雨樋。3. The intermediate layer has a thickness of 20 μm to 500 μm.
The rain gutter according to claim 1, wherein m is m.
エチレン・ジエン−スチレン系ブロック共重合体、ポリ
オレフィン系エラストマー、塩素化ポリオレフィン系エ
ラストマー、若しくはそれらの不飽和カルボン酸誘導
体、若しくはアルコキシシラン誘導体が付加重合された
重合体、若しくはそれらの混合物であることを特徴とす
る請求項１乃至請求項３のいずれかに記載の雨樋。4. The thermoplastic elastomer according to claim 1, wherein the styrene-
Ethylene-diene-styrene-based block copolymer, polyolefin-based elastomer, chlorinated polyolefin-based elastomer, or an unsaturated carboxylic acid derivative thereof, or a polymer obtained by addition polymerization of an alkoxysilane derivative, or a mixture thereof. The rain gutter according to any one of claims 1 to 3, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11007959A JP2000204726A (en) | 1999-01-14 | 1999-01-14 | Rainwater gutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11007959A JP2000204726A (en) | 1999-01-14 | 1999-01-14 | Rainwater gutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000204726A true JP2000204726A (en) | 2000-07-25 |
Family
ID=11680036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11007959A Withdrawn JP2000204726A (en) | 1999-01-14 | 1999-01-14 | Rainwater gutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000204726A (en) |
-
1999
- 1999-01-14 JP JP11007959A patent/JP2000204726A/en not_active Withdrawn
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