JP2004176210A - Shading/heat-insulating sheet - Google Patents

Shading/heat-insulating sheet Download PDF

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Publication number
JP2004176210A
JP2004176210A JP2002343391A JP2002343391A JP2004176210A JP 2004176210 A JP2004176210 A JP 2004176210A JP 2002343391 A JP2002343391 A JP 2002343391A JP 2002343391 A JP2002343391 A JP 2002343391A JP 2004176210 A JP2004176210 A JP 2004176210A
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Japan
Prior art keywords
heat
polyethylene film
light
layer
insulating sheet
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JP2002343391A
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JP3723543B2 (en
Inventor
Naohisa Sendo
尚久 千東
Kazukuni Nakamichi
和邦 中道
Isamu Fujita
勇 藤田
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KOIZUMI JUTE MILLS Ltd
SANKYO SHOJI KK
Sekisui Film Co Ltd
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KOIZUMI JUTE MILLS Ltd
SANKYO SHOJI KK
Sekisui Film Co Ltd
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Application filed by KOIZUMI JUTE MILLS Ltd, SANKYO SHOJI KK, Sekisui Film Co Ltd filed Critical KOIZUMI JUTE MILLS 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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  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Woven Fabrics (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a shading/heat-insulating sheet, having dark color and high photoabsorption rate without being affected by the amount or the like of a kneaded pigment, having excellent shading and heat-insulating properties, and also having excellent strength. <P>SOLUTION: The shading/heat-insulating sheet is obtained by forming an aluminum-deposited layer 3 on one surface of a high-density polyethylene film 2, forming a black printed layer 5 on one surface of a polyethylene film 4 by printing, cutting the laminated film 1 obtained by pasting the aluminum-deposited layer 3 and the black printed layer 5 into a narrow belt-shaped tape 7, and knitting or weaving the narrow belt-shaped tape 7 as a warp yarn or a weft yarn. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、遮光用の積層フイルムを裁断して得た細帯状テープを経糸又は緯糸にして編織成した遮光・保温シートに関するものである。
【０００２】
【従来の技術】
従来より、農業や園芸等の分野に使用される遮光ネットとして、延伸されたポリエチレンフイルム上にアルミニュウム蒸着層及び無延伸ポリエチレンフイルムを順次積層してなり、前記延伸されたポリエチレンフイルムの延伸方向を長さ方向とした積層体テープを用いて織成された遮光ネットが提案されている。（特許文献１参照）。
【０００３】
また、防湿性透明フイルム上に金属蒸着層を形成し、この蒸着層に、ポリイソシアネートと分子量が１５０００以上のポリエステルポリオールとの反応硬化物からなる接着層と、カーボンブラック粉末を混練したポリオレフィンからなる保護フイルムを順次積層してなるテープを、少なくとも一部に用いて織成された遮光ネットが提案されている。（特許文献２参照）。
【０００４】
【特許文献１】
実公平５−３３３３９号公報
【特許文献２】
特公平７−７３８９６号公報
【０００５】
【発明が解決しようとする課題】
ところが、前記する特許文献１に開示された遮光ネットの場合は、延伸されたポリエチレンフイルムと無延伸ポリエチレンフイルムとの間にアルミニュウム蒸着層があるために、無延伸ポリエチレンフイルムネット側、すなわち、ネット裏側でもアルミニュウム蒸着層面で光の反射が生じるので、これが遮光性を低下させる。また、延伸されたポリエチレンフイルムと無延伸ポリエチレンフイルムは、強度的に差があるために、アルミニュウム蒸着層に積層される無延伸ポリエチレンフイルムの存在はネット自体の強度を低下させる原因になる。
【０００６】
また、前記する特許文献２に開示された遮光ネットの場合は、防湿性透明フイルムに形成した金属蒸着層に対し、ポリエステルポリオールとの反応硬化物からなる接着層を介してカーボンブラック粉末（顔料）を混練したポリオレフィンからなる保護フイルムを積層するので、顔料が錬り込まれた色付きの保護フイルムによってネット裏側での光の反射を少なくする作用は期待できるが、保護フイルムの成膜上から顔料の錬込み量に限界があるため、これが保護フイルムの光吸収率を低下させる。また、顔料の錬り込みによって保護フイルムの強度低下は避けられず、これがネット自体の強度を低下させる原因になっている。
【０００７】
そこで、本発明は、顔料の錬り込み量等に左右されることがなく、色が濃くて光吸収率が高く、遮光及び保温性に優れ、しかも、強度的にも優れた遮光・保温シートを提供することを目的としたものである。
【０００８】
【課題を解決するための手段】
上記の目的を達成するための本発明に係る遮光・保温シートは、高密度ポリエチレンフイルムの片面にアルミニュウム蒸着層を形成し、また、ポリエチレンフイルムの片面に印刷によって黒色印刷層を形成し、前記アルミニュウム蒸着層と黒色印刷層を貼り合わせてなる積層フイルムを、細帯状テープに裁断し、該細帯状テープを経糸又は緯糸にして編織成したことを特徴とする。
【０００９】
ここで、積層フイルムを構成する高密度ポリエチレンフイルムの片面には、周知の手法によってアルミニュウムが蒸着される。この際のアルミニュウム蒸着層は、ポリエチレンフイルムとの接合面側が鏡面となるので、この鏡面を外向きに使用し、ポリエチレンフイルム層を透かして光線及び熱線等に対する反射率を高める。また、アルミニュウム蒸着層が形成される高密度ポリエチレンフイルムと、黒色印刷層が形成されるポリエチレンフイルムは、ともに延伸加工されたフイルムが使用され、実用面からは両者とも二軸延伸処理された強度的に優れた透明なフイルムを使用する。
【００１０】
従って、本発明の遮光・保温シートによれば、積層フイルムを構成する高密度ポリエチレンフイルムとポリエチレンフイルムが、ともに延伸加工された強度的に優れたフイルムであるので、これを裁断して編織成された遮光・保温シートは、実用面から充分な物理的強度が得られ、長期間に亘って安定した形態を維持して遮光及び保温性に優れたものである。
【００１１】
また、ポリエチレンフイルムに形成する黒色印刷層は、黒色インクを使用して印刷したものであるので、この黒色印刷層における光吸収率は、カーボンブラック粉末等の顔料をフイルムに混練した色付きの保護フイルム等に比べると格段に高く、遮光性に優れたものである。
【００１２】
また、本発明において、アルミニュウム蒸着層と黒色印刷層の貼り合わせには、防蝕接着剤を用いるのが好ましい。
【００１３】
このように、防蝕接着剤を介してアルミニュウム蒸着層と黒色印刷層を貼り合わせて両層の直接的な接触がないようにすると、経時的にアルミニュウム蒸着層が黒色インク成分によって侵されることがなくなり、アルミニュウム蒸着層の劣化防止に優れたものとなる。しかも、貼り合わさったアルミニュウム蒸着層と黒色印刷層は、その上下両面がポリエチレンフイルムにより挟装状に包み込まれて保護されるので、耐候性に優れ、安定性も高いものである。
【００１４】
【発明の実施の形態】
以下、本発明の実施の形態を、図面に基づいて説明する。
【００１５】
図１は本発明に係る遮光・保温シートの基材とされる積層フイルムの断面図である。
【００１６】
積層フイルム１は、高密度ポリエチレンフイルム２の片面に、アルミニュウム蒸着層３を形成し、また、ポリエチレンフイルム４の片面に、黒色インクを使用して印刷によって黒色印刷層５を形成し、前記アルミニュウム蒸着層３と黒色印刷層５を防蝕接着剤６を使用して貼り合わせている。
【００１７】
前記高密度ポリエチレンフイルム２は、実用面から二軸延伸処理された厚さ２０〜３０μｍ程度の透明なフイルムを使用し、これにアルミニュウム蒸着層３を公知の手法によって蒸着したもので、アルミニュウム蒸着層３の厚みは５００Å程度のものである。また、アルミニュウム蒸着層３は、高密度ポリエチレンフイルム２を透かして見られる側が鏡面３ａとされるので、この鏡面３ａを外に向けて光線及び熱線等に対する反射率を高めるように使用する。
【００１８】
前記ポリエチレンフイルム４は、実用面から高密度ポリエチレンフイルム２と同様に、二軸延伸処理された厚さ１０〜２０μｍ程度の透明なフイルムを使用する。また、黒色印刷層５は、光吸収率の高い黒色インクを使用して公知の手法で印刷して形成する。
【００１９】
アルミニュウム蒸着層３と印刷層５を貼り合わす防蝕接着剤６は、両層の相互接触をなくして一体化が図られるもので、経時的に黒色インク成分によりアルミニュウム蒸着層３が侵されることがなく、また、防蝕接着剤６で貼り合わさったアルミニュウム蒸着層３と黒色印刷層５は、上下両面からポリエチレンフイルム２，４で挟装状に包み込まれて保護されるので、両層とも外気との接触による機能低下がなく安定した性能を発揮し、屋外に使用して耐候性に優れたものである。
【００２０】
上記構成からなる積層フイルム１は、生産工場から所定幅のロール巻フイルムとして出荷される。本発明においては、このロール巻の積層フイルム１を、幅４〜８ｍｍ程度の細帯状に裁断（スリット加工）した細帯状テープ７を用い、図２（ａ），（ｂ），（ｃ）に示すような遮光・保温シートに編織成したものである。
【００２１】
すなわち、図（ａ）の遮光・保温シートＡは、細帯状テープ７を経糸にして織機に掛けて透明な糸８を横入れして織られたものであり、また、図２（ｂ）の遮光・保温シートＢは、細帯状テープ７を緯糸にして織られたものである。また、図２（ｃ）の遮光・保温シートｃは、細帯状テープ７を経糸にして編まれたものである。
【００２２】
【発明の効果】
以上説明したように、本発明の遮光・保温シートによれば、ハウス栽培の内張りカーテン等に好適し、耐久性があり、夏期の昼間は太陽熱を反射して遮光性に優れ、夜間や冬季は地熱の放散を防ぎ、保温効果を高めるので、夏冬兼用で農作物の育成を助ける効果があり、実用性が高いものである。
【図面の簡単な説明】
【図１】図１は本発明に係る遮光・保温シートの基材とされる積層フイルムの断面図である。
【図２】図２（ａ），（ｂ），（ｃ）は積層フイルムをスリット加工して編織成した本発明に係る遮光・保温シートの一部正面図である。
【符号の説明】
１ 積層フイルム
２ 高密度ポリエチレンフイルム
３ アルミニュウム蒸着層
３ａ 鏡面
４ ポリエチレンフイルム
５ 黒色印刷層
６ 防蝕接着剤
７ 細帯状テープ
８ 透明な糸[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light-shielding and heat-insulating sheet formed by knitting and woven a thin strip-shaped tape obtained by cutting a laminated light-shielding film into a warp or a weft.
[0002]
[Prior art]
Conventionally, as a light-shielding net used in fields such as agriculture and horticulture, an aluminum deposition layer and an unstretched polyethylene film are sequentially laminated on a stretched polyethylene film, and the stretching direction of the stretched polyethylene film is set to be long. There has been proposed a light shielding net woven using a laminated tape oriented in the vertical direction. (See Patent Document 1).
[0003]
Further, a metal vapor-deposited layer is formed on the moisture-proof transparent film, and the vapor-deposited layer is formed of a polyolefin obtained by kneading a carbon black powder and an adhesive layer formed of a reaction cured product of a polyisocyanate and a polyester polyol having a molecular weight of 15,000 or more. There has been proposed a light shielding net woven using at least a part of a tape formed by sequentially laminating protective films. (See Patent Document 2).
[0004]
[Patent Document 1]
Japanese Utility Model Publication No. 5-33339 [Patent Document 2]
Japanese Patent Publication No. 7-73896
[Problems to be solved by the invention]
However, in the case of the light-shielding net disclosed in Patent Document 1, since there is an aluminum vapor-deposited layer between the stretched polyethylene film and the unstretched polyethylene film, the unstretched polyethylene film net side, that is, the back side of the net However, since light is reflected on the surface of the aluminum vapor-deposited layer, this lowers light-shielding properties. Further, since there is a difference in strength between the stretched polyethylene film and the non-stretched polyethylene film, the presence of the non-stretched polyethylene film laminated on the aluminum vapor-deposited layer causes a decrease in the strength of the net itself.
[0006]
In the case of the light-shielding net disclosed in the above-mentioned Patent Document 2, carbon black powder (pigment) is applied to the metal vapor-deposited layer formed on the moisture-proof transparent film via an adhesive layer made of a reaction cured product with polyester polyol. Since a protective film consisting of a polyolefin kneaded with a pigment is laminated, the effect of reducing light reflection on the back side of the net can be expected with a colored protective film in which the pigment is kneaded, This reduces the light absorptivity of the protective film due to the limited amount of incorporation. In addition, the strength of the protective film is inevitably reduced due to the incorporation of the pigment, which causes the strength of the net itself to decrease.
[0007]
Therefore, the present invention provides a light-shielding and heat-insulating sheet that is not affected by the amount of pigment incorporated, has a strong color, a high light absorption rate, is excellent in light-shielding and heat-retaining properties, and has excellent strength. The purpose is to provide.
[0008]
[Means for Solving the Problems]
The light-shielding and heat-insulating sheet according to the present invention for achieving the above object has an aluminum vapor-deposited layer formed on one surface of a high-density polyethylene film, and a black printed layer formed by printing on one surface of the polyethylene film. The laminated film obtained by laminating the vapor deposited layer and the black print layer is cut into a narrow tape, and the thin tape is knitted and woven with a warp or a weft.
[0009]
Here, aluminum is deposited on one surface of the high-density polyethylene film constituting the laminated film by a known method. In this case, since the aluminum vapor deposition layer has a mirror surface on the bonding surface side with the polyethylene film, this mirror surface is used outward, and the reflectance to light rays and heat rays is increased through the polyethylene film layer. The high-density polyethylene film on which the aluminum vapor-deposited layer is formed and the polyethylene film on which the black print layer is formed are both stretched films, and from a practical point of view, both are stretched biaxially. Use an excellent transparent film.
[0010]
Therefore, according to the light-shielding and heat-insulating sheet of the present invention, since the high-density polyethylene film and the polyethylene film constituting the laminated film are both stretched and excellent in strength, they are cut and knitted and woven. The light-shielding and heat-insulating sheet has sufficient physical strength from a practical point of view, maintains a stable form for a long period of time, and is excellent in light-shielding and heat-insulating properties.
[0011]
Further, since the black print layer formed on the polyethylene film is printed using black ink, the light absorptance of the black print layer is a colored protective film obtained by kneading a pigment such as carbon black powder into the film. It is much higher than that of the above, and has excellent light-shielding properties.
[0012]
Further, in the present invention, it is preferable to use a corrosion-resistant adhesive for bonding the aluminum deposition layer and the black printing layer.
[0013]
In this way, when the aluminum deposited layer and the black printed layer are stuck together via the anticorrosive adhesive so that there is no direct contact between the two layers, the aluminum deposited layer is not affected by the black ink component over time. , Which is excellent in preventing deterioration of the aluminum deposition layer. In addition, the upper and lower surfaces of the laminated aluminum deposited layer and the black printed layer are wrapped and protected by a polyethylene film so that they have excellent weather resistance and high stability.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0015]
FIG. 1 is a cross-sectional view of a laminated film used as a base material of a light-shielding and heat-insulating sheet according to the present invention.
[0016]
The laminated film 1 has an aluminum vapor-deposited layer 3 formed on one surface of a high-density polyethylene film 2 and a black printed layer 5 formed on one surface of a polyethylene film 4 by printing using black ink. The layer 3 and the black print layer 5 are bonded together using a corrosion-resistant adhesive 6.
[0017]
The high-density polyethylene film 2 is a transparent film having a thickness of about 20 to 30 μm which has been biaxially stretched from a practical point of view, and an aluminum vapor-deposited layer 3 is vapor-deposited thereon by a known method. 3 has a thickness of about 500 °. The aluminum vapor deposition layer 3 has a mirror surface 3a on the side that can be seen through the high-density polyethylene film 2, and is used so that the mirror surface 3a faces outward to increase the reflectance with respect to light rays and heat rays.
[0018]
The polyethylene film 4 is a biaxially stretched transparent film having a thickness of about 10 to 20 μm, similarly to the high-density polyethylene film 2 from a practical point of view. Further, the black print layer 5 is formed by printing using a black ink having a high light absorption rate by a known method.
[0019]
The corrosion-resistant adhesive 6 for bonding the aluminum vapor-deposited layer 3 and the print layer 5 can be integrated by eliminating mutual contact between the two layers, so that the aluminum vapor-deposited layer 3 is not affected by the black ink component over time. In addition, since the aluminum deposition layer 3 and the black printing layer 5 bonded together with the corrosion-resistant adhesive 6 are wrapped and protected by polyethylene films 2 and 4 from both the upper and lower surfaces, both layers are in contact with the outside air. Demonstrates stable performance without any functional deterioration due to, and has excellent weather resistance when used outdoors.
[0020]
The laminated film 1 having the above configuration is shipped from a production factory as a rolled film having a predetermined width. In the present invention, the thin film tape 7 obtained by cutting (slit processing) the rolled laminated film 1 into a narrow band having a width of about 4 to 8 mm is used, as shown in FIGS. 2 (a), 2 (b) and 2 (c). It is knitted and woven on a light-shielding and heat-insulating sheet as shown.
[0021]
That is, the light-shielding / heat-insulating sheet A in FIG. 2A is woven by using a narrow band tape 7 as a warp and hanging it on a loom and inserting a transparent thread 8 horizontally. The light-shielding / heat-retaining sheet B is woven using the narrow band tape 7 as a weft. The light-shielding and heat-insulating sheet c in FIG. 2C is knitted with the narrow tape 7 as a warp.
[0022]
【The invention's effect】
As described above, the light-shielding and heat-insulating sheet of the present invention is suitable for lining curtains for house cultivation, has durability, has excellent light-shielding properties by reflecting solar heat during the daytime in summer, and at night and in winter. Since it prevents the dissipation of geothermal heat and enhances the heat retention effect, it has the effect of assisting the cultivation of crops in both summer and winter, and is highly practical.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a laminated film used as a base material of a light-shielding and heat retaining sheet according to the present invention.
FIGS. 2 (a), (b) and (c) are partial front views of a light-shielding and heat-retaining sheet according to the present invention in which a laminated film is slit and woven.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 laminated film 2 high-density polyethylene film 3 aluminum deposited layer 3 a mirror surface 4 polyethylene film 5 black printed layer 6 anticorrosive adhesive 7 strip tape 8 transparent thread

Claims (3)

高密度ポリエチレンフイルムの片面にアルミニュウム蒸着層を形成し、また、ポリエチレンフイルムの片面に印刷によって黒色印刷層を形成し、前記アルミニュウム蒸着層と黒色印刷層を貼り合わせてなる積層フイルムを、細帯状テープに裁断し、該細帯状テープを経糸又は緯糸にして編織成したことを特徴とする遮光・保温シート。An aluminum vapor-deposited layer is formed on one side of a high-density polyethylene film, and a black print layer is formed by printing on one side of the polyethylene film, and a laminated film obtained by laminating the aluminum vapor-deposited layer and the black print layer is a thin strip tape. A light-shielding and heat-insulating sheet, characterized in that the thin strip-shaped tape is knitted and woven with a warp or a weft. 高密度ポリエチレンフイルムとポリエチレンフイルムがともに延伸加工されたフイルムからなることを特徴とする請求項１記載の遮光・保温シート。2. The light-shielding and heat-insulating sheet according to claim 1, wherein both the high-density polyethylene film and the polyethylene film are stretched films. アルミニュウム蒸着層と黒色印刷層の貼り合わせに、防蝕接着剤を用いたことを特徴とする請求項１記載の遮光・保温シート。2. The light-shielding and heat-insulating sheet according to claim 1, wherein a corrosion-resistant adhesive is used for bonding the aluminum deposition layer and the black printing layer.
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JP2006118057A (en) * 2004-10-19 2006-05-11 Spacio Kk Heat-shielding sheet and its installation structure
KR100679335B1 (en) * 2006-02-17 2007-02-06 주식회사 파비노 Fabric structure and method for manufacturing the same
WO2017150165A1 (en) 2016-02-29 2017-09-08 帝人フィルムソリューション株式会社 Greenhouse, plant cultivation method using said greenhouse, and heat-ray reflecting film structure
KR102087520B1 (en) * 2018-11-29 2020-03-10 농업회사법인 델텍스 주식회사 Two toned blackout curtain together with keeping warm for cultivating Ginseng plant and manufacturing method thereof
EP3390049B1 (en) 2015-12-15 2020-08-19 Borealis AG Polyethylene based laminated film structure with barrier properties

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US8978342B2 (en) 2012-06-15 2015-03-17 Auburn University Residential radiant barrier assemblies

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006118057A (en) * 2004-10-19 2006-05-11 Spacio Kk Heat-shielding sheet and its installation structure
KR100679335B1 (en) * 2006-02-17 2007-02-06 주식회사 파비노 Fabric structure and method for manufacturing the same
EP3390049B1 (en) 2015-12-15 2020-08-19 Borealis AG Polyethylene based laminated film structure with barrier properties
WO2017150165A1 (en) 2016-02-29 2017-09-08 帝人フィルムソリューション株式会社 Greenhouse, plant cultivation method using said greenhouse, and heat-ray reflecting film structure
EP3626048A1 (en) 2016-02-29 2020-03-25 Teijin Film Solutions Limited Greenhouse, plant cultivation method using said greenhouse, and heat-ray reflecting film structure
US11291167B2 (en) 2016-02-29 2022-04-05 Toyobo Co., Ltd. Agricultural greenhouse, plant cultivation method using the same, and heat-ray reflecting film structure
KR102087520B1 (en) * 2018-11-29 2020-03-10 농업회사법인 델텍스 주식회사 Two toned blackout curtain together with keeping warm for cultivating Ginseng plant and manufacturing method thereof

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