JP3238898U - Lining curtains for agricultural houses - Google Patents

Lining curtains for agricultural houses Download PDF

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JP3238898U
JP3238898U JP2022002175U JP2022002175U JP3238898U JP 3238898 U JP3238898 U JP 3238898U JP 2022002175 U JP2022002175 U JP 2022002175U JP 2022002175 U JP2022002175 U JP 2022002175U JP 3238898 U JP3238898 U JP 3238898U
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nonwoven fabric
fiber nonwoven
split
melting point
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壮彦 権藤
彰広 伊藤
翔平 長野
智行 岡村
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Unitika Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
    • Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
    • Y02A40/25—Greenhouse technology, e.g. cooling systems therefor

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Abstract

【課題】被覆材の内面に生じた結露水が落下しても、内張りカーテン上に溜まらずに内張りカーテン中に保水し、しかも内張りカーテンの巻き上げ時に十分な強度を持つ農業用ハウスの内張りカーテンを提供する。【解決手段】内張りカーテン３は、長繊維不織布層５と割繊維不織布層６とが積層されてなる積層不織布よりなる。長繊維不織布は、芯成分が第一高融点重合体で、鞘成分が第一高融点重合体よりも融点の低い第一低融点重合体である芯鞘型複合長繊維を構成繊維とする。割繊維不織布は三層構造体であって、中間層と表裏層よりなる。中間層は第二高融点重合体で、表裏層が第二高融点重合体よりも融点の低い第二低融点重合体である。長繊維不織布と割繊維不織布とは、第一低融点重合体と第二低融点重合体が融着することにより積層一体化している。【選択図】図２[Problem] To provide a lining curtain for an agricultural house that retains water in the lining curtain without accumulating on the lining curtain even if dew condensation water generated on the inner surface of the covering material falls, and has sufficient strength when the lining curtain is rolled up. offer. A lining curtain (3) is made of a laminated nonwoven fabric in which a long fiber nonwoven fabric layer (5) and a split fiber nonwoven fabric layer (6) are laminated. The long-fiber nonwoven fabric is composed of core-sheath type conjugate long fibers in which the core component is the first high-melting point polymer and the sheath component is the first low-melting-point polymer having a lower melting point than the first high-melting point polymer. The split fiber nonwoven fabric has a three-layer structure consisting of an intermediate layer and front and back layers. The intermediate layer is a second high melting point polymer, and the front and back layers are a second low melting point polymer having a lower melting point than the second high melting point polymer. The long-fiber nonwoven fabric and the split-fiber nonwoven fabric are laminated and integrated by fusing the first low-melting polymer and the second low-melting polymer. [Selection drawing] Fig. 2

Description

新規性喪失の例外適用申請有り There is an application for exception to loss of novelty

本考案は、農業用ハウスの内張りカーテンに関し、特に、長繊維不織布と割繊維不織布とを積層一体化した内張りカーテンに関するものである。 TECHNICAL FIELD The present invention relates to a lining curtain for an agricultural house, and more particularly to a lining curtain in which a long fiber nonwoven fabric and a split fiber nonwoven fabric are laminated and integrated.

従来より、作物の生育に適した環境を与えるため及び悪天候や鳥獣被害から作物を守るため、農業用ハウス内で作物を生育することが行われている。農業用ハウス１は、透明又は半透明のガラス又はフィルムよりなる被覆材２で形成されている。農業用ハウス１内には、内張りカーテン３が設けられており、巻き上げロール４で開閉可能とされている。内張りカーテン３は、遮光、遮熱、保温又は吸水等の目的で用いられるものである。この内張りカーテン３は、日照り等のときは閉めて遮光及び遮熱し、雨天等のときは巻き上げロール４で巻き上げて開けて採光し、作物の生育に適した温度に調整するものである。また、気温が低下する夜間においては、内張りカーテン３を閉めて、農業用ハウス１内の温度が低下しないようにするためのものでもある。 2. Description of the Related Art Conventionally, crops have been grown in agricultural greenhouses in order to provide an environment suitable for growing them and to protect them from bad weather and damage from birds and animals. An agricultural house 1 is formed of a covering material 2 made of transparent or translucent glass or film. A lining curtain 3 is provided in an agricultural house 1 and can be opened and closed by a winding roll 4. - 特許庁The lining curtain 3 is used for purposes such as light shielding, heat shielding, heat retention, and water absorption. The lining curtain 3 is closed to block light and heat in drought or the like, and is wound up by a winding roll 4 and opened to let in light in rainy weather or the like to adjust the temperature to a suitable one for growing crops. Also, at night when the temperature drops, the lining curtain 3 is closed to prevent the temperature inside the agricultural house 1 from dropping.

かかる内張りカーテン３としては、合成樹脂製フィルム、割繊維不織布又は長繊維不織布等が用いられている。しかしながら、合成樹脂製フィルムは、吸水機能がないという欠点がある。すなわち、夜間において、農業用ハウス１内の温度と外気の温度差により、被覆材２の内面に結露水が生じ、これが落下して合成樹脂製フィルムよりなる内張りカーテン３上に溜まり、巻き上げにより内張りカーテン３が損傷又は破損したり、内張りカーテン３の開閉が不能になるという欠点がある。また、合成樹脂製フィルムの内面に結露水が生じた場合は、これが作物に落下し、作物の生育に悪影響を与えるという欠点がある。 As the lining curtain 3, a synthetic resin film, a split-fiber nonwoven fabric, a long-fiber nonwoven fabric, or the like is used. However, synthetic resin films have the drawback of not having a water absorbing function. That is, at night, due to the temperature difference between the inside of the agricultural house 1 and the outside air, condensed water is generated on the inner surface of the covering material 2, which falls and accumulates on the lining curtain 3 made of a synthetic resin film. There is a drawback that the curtain 3 is damaged or broken, and the opening and closing of the lining curtain 3 becomes impossible. In addition, when condensation occurs on the inner surface of the synthetic resin film, it falls on the crops and adversely affects the growth of the crops.

割繊維不織布は、ポリオレフィン等の疎水性重合体よりなるフィルムを製膜し、このフィルムを高倍率に一軸延伸すると共に割繊して得られるものである。割繊維不織布は、一軸延伸した方向に走行する割繊維が網状に繋がってなるものである。かかる網状の割繊維不織布よりなる内張りカーテン３は、被覆材２の内面に生じた結露水が落下すると、網目を通して作物に落下し、作物の生育に悪影響を与えるという欠点がある。このため、特許文献１では、ポリビニルアルコールの如き親水性重合体により割繊維不織布を作成し、ポリビニルアルコールに結露水を吸水せしめることが提案されている。しかしながら、結露水を吸水した割繊維不織布よりなる内張りカーテン４は、膨潤して強度不足となり、巻き上げ時に損傷又は破断する恐れがある。 The split fiber nonwoven fabric is obtained by forming a film of a hydrophobic polymer such as polyolefin, uniaxially stretching the film at a high magnification, and splitting the film. The split fiber nonwoven fabric is formed by connecting split fibers running in a uniaxially stretched direction in a network. The lining curtain 3 made of such a mesh-like split-fiber nonwoven fabric has the disadvantage that when dew condensation water generated on the inner surface of the covering material 2 falls, it falls on the crops through the mesh, adversely affecting the growth of the crops. For this reason, Patent Document 1 proposes making a split-fiber nonwoven fabric from a hydrophilic polymer such as polyvinyl alcohol, and allowing the polyvinyl alcohol to absorb dew condensation water. However, the lining curtain 4 made of split-fiber nonwoven fabric that has absorbed condensed water swells and lacks strength, and may be damaged or broken when rolled up.

長繊維不織布は、構成繊維である長繊維相互間に多数の空隙があるので、この空隙で保水しうる。したがって、長繊維不織布は内張りカーテン３に要求される吸水機能を満足するものである。一方、長繊維不織布は、合成樹脂製フィルムに比べて保温性の点で劣っている。このため、特許文献２では、長繊維不織布の片面（被覆材２に対向する面）のみにアクリル酸エステル樹脂をコーティングすることが提案されている。すなわち、アクリル酸エステル樹脂をコーティングして、片面に存在する長繊維相互間の空隙を充填し、保温機能を高めようというものである。しかしながら、長繊維不織布の空隙を充填してしまうと、被覆材２の内面に生じた結露水が落下して、長繊維不織布よりなる内張りシート３上に溜まり、合成樹脂製フィルムよりなる内張りカーテンと同様の欠点が生じる。 Since the long-fiber nonwoven fabric has a large number of voids between the constituent long fibers, the voids can retain water. Therefore, the long-fiber nonwoven fabric satisfies the water absorption function required for the lining curtain 3 . On the other hand, long-fiber nonwoven fabrics are inferior to synthetic resin films in terms of heat retention. For this reason, Patent Document 2 proposes coating only one side (the side facing the covering material 2) of the long-fiber nonwoven fabric with an acrylic acid ester resin. That is, by coating an acrylic acid ester resin to fill the gaps between the long fibers existing on one side, the heat retaining function is enhanced. However, when the voids of the long-fiber nonwoven fabric are filled, the dew condensation water generated on the inner surface of the covering material 2 drops and accumulates on the lining sheet 3 made of the long-fiber nonwoven fabric, resulting in a lining curtain made of a synthetic resin film. Similar drawbacks arise.

特開２００９－２２１６１６号公報JP 2009-221616 A 実公昭６２－２８８５６号公報Japanese Utility Model Publication No. 62-28856

本考案の課題は、被覆材の内面に生じた結露水が落下しても、内張りカーテン上に溜まらずに内張りカーテン中に吸水及び保水し、しかも内張りカーテンの巻き上げ時に十分な強度を持つものを提供することにある。 The object of the present invention is to provide a material that absorbs and retains water in the lining curtain without accumulating on the lining curtain even if the condensed water generated on the inner surface of the covering material drops, and that has sufficient strength when the lining curtain is rolled up. to provide.

本考案は、長繊維不織布と割繊維不織布とを特定の手段で積層一体化された積層不織布を内張りカーテンとすることにより、上記課題を解決したものである。すなわち、本考案は、長繊維不織布層と割繊維不織布層とが積層されてなる積層不織布よりなる農業用ハウスの内張りカーテンであって、前記長繊維不織布層は長繊維不織布を具備しており、該長繊維不織布は、芯成分が第一高融点重合体で、鞘成分が該第一高融点重合体よりも融点の低い第一低融点重合体である芯鞘型複合長繊維を構成繊維とするものであり、前記割繊維不織布層は割繊維不織布を具備しており、該割繊維不織布は、疎水性重合体よりなり、中間層が第二高融点重合体で、表裏層が該第二高融点重合体よりも融点の低い第二低融点重合体である三層構造体であり、前記長繊維不織布層と前記割繊維不織布層とは、前記第一低融点重合体と前記第二低融点重合体とが融着することにより、積層一体化されていることを特徴とする農業用ハウスの内張りカーテンに関するものである。 The present invention solves the above problems by using a laminated nonwoven fabric obtained by laminating and integrating a long fiber nonwoven fabric and a split fiber nonwoven fabric by a specific means as a lining curtain. That is, the present invention provides a lining curtain for an agricultural house made of a laminated nonwoven fabric in which a long-fiber nonwoven fabric layer and a split-fiber nonwoven fabric layer are laminated, wherein the long-fiber nonwoven fabric layer comprises a long-fiber nonwoven fabric, The long-fiber nonwoven fabric is composed of core-sheath type conjugate long fibers in which the core component is the first high melting point polymer and the sheath component is the first low melting point polymer having a lower melting point than the first high melting point polymer. The split-fiber nonwoven fabric layer comprises a split-fiber nonwoven fabric, the split-fiber nonwoven fabric is made of a hydrophobic polymer, the intermediate layer is the second high-melting polymer, and the front and back layers are the second high-melting polymer. The three-layer structure is a second low-melting polymer having a lower melting point than the high-melting polymer, and the long-fiber nonwoven fabric layer and the split-fiber nonwoven fabric layer are composed of the first low-melting polymer and the second low-melting polymer. The present invention relates to a lining curtain for an agricultural house characterized by being laminated and integrated by fusing with a melting point polymer.

本考案に係る農業用ハウスの内張りカーテンは、長繊維不織布層５と割繊維不織布層６とが積層されてなる積層不織布よりなる。長繊維不織布層５は長繊維不織布を具備するものである。長繊維不織布は、芯鞘型複合長繊維を構成繊維とするものである。芯鞘型複合長繊維は、芯成分がポリエチレンテレフタレート等よりなる第一高融点重合体であり、鞘成分が第一高融点重合体よりも融点の低いポリエチレン等のポリオレフィンや共重合ポリエステル等の第一低融点重合体である。長繊維不織布が日光に暴露されるものであることから、芯成分に酸化チタン等の紫外線遮蔽剤を含有させておくのが好ましい。含有量は任意であるが、０．１～０．６質量％程度であるのが好ましい。芯鞘型複合長繊維の繊度は任意であるが、５～１５デニール程度であるのが好ましい。また、長繊維不織布の目付も任意であるが、１０～６０ｇ／ｍ2程度であるのが好ましい。 A lining curtain for an agricultural house according to the present invention is made of a laminated nonwoven fabric in which a long fiber nonwoven fabric layer 5 and a split fiber nonwoven fabric layer 6 are laminated. The long-fiber nonwoven fabric layer 5 comprises a long-fiber nonwoven fabric. The long-fiber nonwoven fabric is composed of core-sheath type composite long fibers. The core-sheath type composite filament has a core component made of a first high melting point polymer such as polyethylene terephthalate, and a sheath component made of a polyolefin such as polyethylene or a copolymer polyester having a lower melting point than the first high melting point polymer. A low melting point polymer. Since the long-fiber nonwoven fabric is exposed to sunlight, it is preferable that the core component contains an ultraviolet shielding agent such as titanium oxide. Although the content is arbitrary, it is preferably about 0.1 to 0.6% by mass. The fineness of the core-sheath type conjugate long fibers is arbitrary, but it is preferably about 5 to 15 denier. The basis weight of the long-fiber nonwoven fabric is also arbitrary, but it is preferably about 10 to 60 g/m 2 .

割繊維不織布層６は割繊維不織布６ａを具備するものである。割繊維不織布６ａは、ポリオレフィン等の疎水性重合体よりなる三層構造体である。すなわち、三層構造体のフィルムを作成し、このフィルムを高倍率で一軸延伸すると共に割繊して得られるものである。三層構造体の中間層６１は、高密度ポリエチレン等の第二高融点重合体よりなる。そして、表裏層６２，６３（表面層６２と裏面層６３）は、第二高融点重合体よりも融点の低い低密度ポリエチレン等の第二低融点重合体よりなる。割繊維不織布６ａも日光に暴露されるものであるから、第二高融点重合体中に酸化チタン等の紫外線遮蔽剤を含有させておくのが好ましい。含有量は任意であるが、０．４～１０質量％程度であるのが好ましい。中間層６１と表裏層６２，６３の厚さは任意であるが、表面層６２と裏面層６３は同一厚さであり、中間層６１の厚さは表面層６２の厚さの４倍であるのが好ましい。網状の割繊維不織布６ａを構成する割繊維の幅は任意であるが、０．０５～２ｍｍ程度であるのが好ましい。また、割繊維の厚さも任意であるが、１０～１００μｍ程度であるのが好ましい。また、割繊維不織布６ａの目付も任意であるが、１０～６０ｇ／ｍ2程度であるのが好ましい。 The split-fiber nonwoven fabric layer 6 comprises a split-fiber nonwoven fabric 6a. The split fiber nonwoven fabric 6a has a three-layer structure made of a hydrophobic polymer such as polyolefin. That is, it is obtained by preparing a film having a three-layer structure, uniaxially stretching this film at a high magnification, and splitting it. The intermediate layer 61 of the three-layer structure is made of a second high melting point polymer such as high density polyethylene. The front and back layers 62 and 63 (surface layer 62 and back layer 63) are made of a second low melting point polymer such as low density polyethylene having a melting point lower than that of the second high melting point polymer. Since the split fiber nonwoven fabric 6a is also exposed to sunlight, it is preferable to incorporate an ultraviolet shielding agent such as titanium oxide into the second high melting point polymer. Although the content is arbitrary, it is preferably about 0.4 to 10% by mass. The thicknesses of the intermediate layer 61 and the front and back layers 62 and 63 are arbitrary, but the surface layer 62 and the back layer 63 have the same thickness, and the thickness of the intermediate layer 61 is four times the thickness of the surface layer 62. is preferred. Although the width of the split fibers constituting the mesh-like split fiber nonwoven fabric 6a is arbitrary, it is preferably about 0.05 to 2 mm. The thickness of the split fibers is also arbitrary, but it is preferably about 10 to 100 μm. The basis weight of the split fiber nonwoven fabric 6a is also arbitrary, but is preferably about 10 to 60 g/m 2 .

割繊維不織布６ａは一軸延伸して得られるものであるから、一軸延伸した方向に走行する割繊維が網状に繋がっている。したがって、割繊維が走行する方向に対して高強度であるが、この方向と直交する方向には十分な強度が得られない。たとえば、縦方向に一軸延伸すれば、縦方向は高強度であるが、幅方向には十分な強度が得られない。したがって、割繊維不織布６ａを少なくとも二枚積層一体化して、割繊維不織布層６とするのが好ましい。すなわち、延伸方向が直交する二枚以上の割繊維不織布６ａを重ね合わせて積層一体化し、割繊維不織布層６を形成するのが好ましい。たとえば、二枚の割繊維不織布６ａで割繊維不織布層６を形成する場合、一枚は縦方向に一軸延伸して得られた割繊維不織布６ａを用い、他の一枚は幅方向に一軸延伸して得られた割繊維不織布６ａを用いるのが好ましい。かかる割繊維不織布層６は、一枚の割繊維の走行方向と他の一枚の割繊維の走行方向とが概ね直交しており、縦方向及び幅方向の両者共に高強度となる。なお、二枚の割繊維不織布６ａを積層一体化するには、割繊維不織布６ａを積層した後、割繊維不織布６ａの表裏層６２，６３を形成している第二低融点重合体同士を融着させればよい。 Since the split fiber nonwoven fabric 6a is obtained by uniaxial stretching, the split fibers running in the direction of uniaxial stretching are connected in a network. Therefore, the strength is high in the direction in which the split fibers run, but sufficient strength is not obtained in the direction orthogonal to this direction. For example, if the film is uniaxially stretched in the machine direction, it has high strength in the machine direction but does not have sufficient strength in the width direction. Therefore, it is preferable to form the split fiber nonwoven fabric layer 6 by stacking and integrating at least two split fiber nonwoven fabrics 6a. That is, it is preferable to form the split-fiber nonwoven fabric layer 6 by superimposing and integrating two or more split-fiber nonwoven fabrics 6a whose stretching directions are orthogonal to each other. For example, when forming the split fiber nonwoven fabric layer 6 with two split fiber nonwoven fabrics 6a, one split fiber nonwoven fabric 6a obtained by uniaxial stretching in the longitudinal direction is used, and the other one is uniaxially stretched in the width direction. It is preferable to use the split fiber nonwoven fabric 6a obtained by the above. In the split fiber nonwoven fabric layer 6, the running direction of one split fiber and the running direction of the other split fiber are substantially perpendicular to each other, and the strength is high both in the longitudinal direction and the width direction. In order to laminate and integrate two split-fiber nonwoven fabrics 6a, after the split-fiber nonwoven fabrics 6a are laminated, the second low-melting-point polymers forming the front and back layers 62, 63 of the split-fiber nonwoven fabrics 6a are melted. You should wear it.

二枚以上の割繊維不織布６ａを積層一体化する場合には、各割繊維不織布６ａの割繊維の走行方向が一定の角度で交差するようにして一体化し、縦方向、幅方向及びバイアス方向に高強度になるようにするのが好ましい。また、本考案においては、一枚の割繊維不織布６ａを用いて割繊維不織布層６を形成してもよい。この場合、長繊維不織布層５に一枚の割繊維不織布６ａを積層して一体化することになり、縦方向又は幅方向又はバイアス方向等のいずれか一方向に高強度であるが、この方向と直交する方向には十分な強度を持たない内張りカーテン３が得られる。かかる内張りカーテン３であっても、高強度の方向を巻き上げ方向とすれば、使用することができる。 When two or more split fiber nonwoven fabrics 6a are laminated and integrated, they are integrated so that the running directions of the split fibers of each split fiber nonwoven fabric 6a intersect at a certain angle, and are integrated in the longitudinal direction, the width direction and the bias direction. High strength is preferred. Further, in the present invention, the split fiber nonwoven fabric layer 6 may be formed using a single split fiber nonwoven fabric 6a. In this case, one piece of split fiber nonwoven fabric 6a is laminated and integrated with the long fiber nonwoven fabric layer 5, and the strength is high in one direction such as the longitudinal direction, the width direction, or the bias direction. A lining curtain 3 is obtained which does not have sufficient strength in the direction perpendicular to the . Even such a lining curtain 3 can be used if the direction of high strength is set as the winding direction.

長繊維不織布層５と割繊維不織布層６とは、長繊維不織布を構成している芯鞘型複合長繊維の鞘成分である第一低融点重合体と、割繊維不織布６ａの表面層６２又は裏面層６３を構成している第二低融点重合体とが融着することにより、一体化している。具体的には、第一低融点重合体であるポリエチレンと、第二低融点重合体である線状低密度ポリエチレンとが融着することにより、一体化している。第一低融点重合体及び第二低融点重合体は、両者共にポリエチレンの範疇に属する重合体であり、相溶性が良好で強固に融着する。したがって、長繊維不織布層５と割繊維不織布層６とは強固に一体化している。また、長繊維不織布層５に割繊維不織布層６が積層一体化していることにより、保温機能も向上する。 The long-fiber nonwoven fabric layer 5 and the split-fiber nonwoven fabric layer 6 are composed of the first low-melting-point polymer, which is the sheath component of the core-sheath-type composite long fibers constituting the long-fiber nonwoven fabric, and the surface layer 62 of the split-fiber nonwoven fabric 6a or It is integrated with the second low-melting-point polymer forming the back layer 63 by being fused. Specifically, polyethylene as the first low-melting-point polymer and linear low-density polyethylene as the second low-melting-point polymer are integrated by being fused. Both the first low-melting-point polymer and the second low-melting-point polymer are polymers belonging to the category of polyethylene, have good compatibility, and are strongly fused. Therefore, the long fiber nonwoven fabric layer 5 and the split fiber nonwoven fabric layer 6 are firmly integrated. In addition, since the split fiber nonwoven fabric layer 6 is integrated with the long fiber nonwoven fabric layer 5, the heat retaining function is also improved.

本考案に係る農業用ハウスの内張りカーテンは、長繊維不織布層と割繊維不織布層とが積層一体化されてなるものであるため、農業用ハウスの被覆材の内面に生じた結露水が内張りカーテン上に落下しても、長繊維不織布の構成繊維相互間の間隙中に吸水し保水される。したがって、結露水が内張りカーテン上に溜まりにくく、また作物に結露水が落下することを防止しうる。そして、本考案に係る内張りカーテンには、割繊維不織布層が積層一体化されているので、高強度となっているため、内張りカーテンの巻き上げ時に損傷したり破損することを防止しうる。 Since the lining curtain of the agricultural house according to the present invention is formed by laminating and integrating the long fiber nonwoven fabric layer and the split fiber nonwoven fabric layer, the dew condensation water generated on the inner surface of the covering material of the agricultural house can be absorbed into the lining curtain. Even if it falls on the top, it absorbs and retains water in the gaps between the constituent fibers of the long-fiber nonwoven fabric. Therefore, the condensed water is less likely to accumulate on the lining curtain and can be prevented from falling on the crops. In addition, since the lining curtain according to the present invention is integrated with the split fiber nonwoven fabric layer, the lining curtain has high strength, so that it can be prevented from being damaged or broken when the lining curtain is rolled up.

農業用ハウスの構造を模式的に示した側面図である。It is the side view which showed the structure of an agricultural house typically. 本考案の一例に係る農業用ハウスの内張りカーテンを模式的に示した側面図である。1 is a side view schematically showing a lining curtain of an agricultural house according to an example of the present invention; FIG. 本考案で用いる割繊維不織布の一例を模式的に示した側面図である。It is a side view which showed typically an example of the split fiber nonwoven fabric used by this invention.

１ 農業用ハウス
２ 被覆材
３ 内張りカーテン
４ 巻き上げロール
５ 長繊維不織布層
６ 割繊維不織布層
６ａ 割繊維不織布
６１ 割繊維不織布の中間層
６２ 割繊維不織布の表面層
６３ 割繊維不織布の裏面層 1 Agricultural house 2 Covering material 3 Lining curtain 4 Winding roll 5 Long fiber nonwoven fabric layer 6 Split fiber nonwoven fabric layer 6a Split fiber nonwoven fabric 61 Intermediate layer of split fiber nonwoven fabric 62 Surface layer of split fiber nonwoven fabric 63 Back layer of split fiber nonwoven fabric

Claims (4)

長繊維不織布層と割繊維不織布層とが積層されてなる積層不織布よりなる農業用ハウスの内張りカーテンであって、
前記長繊維不織布層は長繊維不織布を具備しており、該長繊維不織布は、芯成分が第一高融点重合体で、鞘成分が該第一高融点重合体よりも融点の低い第一低融点重合体である芯鞘型複合長繊維を構成繊維とするものであり、
前記割繊維不織布層は割繊維不織布を具備しており、該割繊維不織布は、疎水性重合体よりなり、中間層が第二高融点重合体で、表裏層が該第二高融点重合体よりも融点の低い第二低融点重合体である三層構造体であり、
前記長繊維不織布層と前記割繊維不織布層とは、前記第一低融点重合体と前記第二低融点重合体とが融着することにより、積層一体化されていることを特徴とする農業用ハウスの内張りカーテン。 A lining curtain for an agricultural house made of a laminated nonwoven fabric obtained by laminating a long fiber nonwoven fabric layer and a split fiber nonwoven fabric layer,
The long-fiber nonwoven fabric layer comprises a long-fiber nonwoven fabric, the core component of which is the first high-melting polymer, and the sheath component is the first low-melting polymer having a lower melting point than the first high-melting polymer. Constituent fibers are core-sheath type conjugate long fibers that are melting point polymers,
The split-fiber nonwoven fabric layer comprises a split-fiber nonwoven fabric, the split-fiber nonwoven fabric is made of a hydrophobic polymer, the intermediate layer is made of the second high-melting point polymer, and the front and back layers are made of the second high-melting point polymer. is a three-layer structure that is a second low-melting polymer with a low melting point,
The long-fiber nonwoven fabric layer and the split-fiber nonwoven fabric layer are laminated and integrated by fusing the first low-melting polymer and the second low-melting polymer. House lining curtain. 割繊維不織布層は、中間層が第二高融点重合体で、表裏層が第二低融点重合体である三層構造体の割繊維不織布が二枚積層されてなり、該第二低融点重合体の融着により積層一体化している請求項１記載の農業用ハウスの内張りカーテン。 The split fiber nonwoven fabric layer is formed by laminating two split fiber nonwoven fabrics having a three-layer structure in which the middle layer is the second high melting point polymer and the front and back layers are the second low melting point polymer. The lining curtain for an agricultural house according to claim 1, wherein the lining curtain for an agricultural house is laminated and integrated by fusion bonding. 二枚の割繊維不織布のうち、一枚の割繊維の走行方向と他の一枚の割繊維の走行方向とが概ね直交している請求項２記載の農業用ハウスの内張りカーテン。 3. The lining curtain for an agricultural house according to claim 2, wherein the running direction of one split fiber and the running direction of the other split fiber of the two split fiber nonwoven fabrics are substantially perpendicular to each other. 第一高融点重合体がポリエチレンテレフタレートであり、第一低融点重合体がポリエチレンであり、第一高融点重合体が高密度ポリエチレンであり、第二低融点重合体が低密度ポリエチレンである請求項１記載の農業用ハウスの内張りカーテン。 The first high melting point polymer is polyethylene terephthalate, the first low melting point polymer is polyethylene, the first high melting point polymer is high density polyethylene, and the second low melting point polymer is low density polyethylene. A lining curtain for an agricultural house according to 1.
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