JP2007001079A - Heat insulating sheet and heat insulating article - Google Patents
Heat insulating sheet and heat insulating article Download PDFInfo
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- JP2007001079A JP2007001079A JP2005182165A JP2005182165A JP2007001079A JP 2007001079 A JP2007001079 A JP 2007001079A JP 2005182165 A JP2005182165 A JP 2005182165A JP 2005182165 A JP2005182165 A JP 2005182165A JP 2007001079 A JP2007001079 A JP 2007001079A
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- heat insulating
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000004744 fabric Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 32
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 31
- 239000002657 fibrous material Substances 0.000 claims abstract description 8
- 230000005855 radiation Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 26
- 239000000835 fiber Substances 0.000 claims description 18
- 239000005871 repellent Substances 0.000 claims description 11
- 239000002759 woven fabric Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229920000728 polyester Polymers 0.000 claims description 4
- 239000011247 coating layer Substances 0.000 claims description 3
- 150000001336 alkenes Chemical class 0.000 claims description 2
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000012528 membrane Substances 0.000 abstract 2
- 238000012545 processing Methods 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 6
- 239000002952 polymeric resin Substances 0.000 description 6
- 230000002940 repellent Effects 0.000 description 6
- 229920003002 synthetic resin Polymers 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 206010016334 Feeling hot Diseases 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000004043 dyeing Methods 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 230000035807 sensation Effects 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004640 Melamine resin Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 235000009120 camo Nutrition 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 235000005607 chanvre indien Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920002215 polytrimethylene terephthalate Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Landscapes
- Walking Sticks, Umbrellas, And Fans (AREA)
- Laminated Bodies (AREA)
- Physical Vapour Deposition (AREA)
Abstract
Description
本発明は、耐水性を有するだけでなく太陽の強い放射熱をさえぎることができ、さらにはシートで覆われた内部空間の温度上昇を防ぐことができる遮熱シート、および該遮熱シートを用いてなる遮熱用品に関するものである。 The present invention not only has water resistance but also can block the strong radiant heat of the sun, and further can prevent the temperature rise in the internal space covered with the sheet, and the heat shielding sheet is used. It is related to the heat shielding article.
従来、テント等に使用される膜体には、耐水性だけでなく夏場の強い日差しの下での太陽の強い放射熱をさえぎることが要望されている。さらには、テント内部での温度上昇および体感温度を低く抑えることが要望されている。 Conventionally, a film body used for a tent or the like is required to block not only water resistance but also strong radiant heat of the sun under strong sunlight in summer. Furthermore, it is desired to keep the temperature rise and the sensible temperature inside the tent low.
熱をさえぎる遮熱シートとしては、ＴｉやＣｒなどからなる金属皮膜層を不織布に積層したものが提案されている（例えば、特許文献１参照）。しかしながら、かかる遮熱シートは、耐水性を有するものではないため、テントの膜体として使用することができなかった。 As a heat shielding sheet for blocking heat, a sheet in which a metal film layer made of Ti, Cr or the like is laminated on a nonwoven fabric has been proposed (for example, see Patent Document 1). However, since such a heat shield sheet does not have water resistance, it cannot be used as a film body of a tent.
また、特許文献２では、酸化亜鉛を主体とするセラミック粉末を水性懸濁液として用い、繊維に対して１〜４０重量％付与することが提案されているが、かかる方法で得られた繊維は、太陽の強い放射熱をさえぎることはできるものの、テントの膜体として使用しても、内部空間の温度上昇を防ぐことができるものではなかった。 Further, Patent Document 2 proposes using ceramic powder mainly composed of zinc oxide as an aqueous suspension to give 1 to 40% by weight to the fiber, but the fiber obtained by such a method is Although it was possible to block the strong radiant heat of the sun, it could not prevent the temperature of the internal space from rising even when used as a tent film.
本発明は上記の背景に鑑みなされたものであり、その目的は、耐水性を有するだけでなく太陽の強い放射熱をさえぎることができ、さらにはシートで覆われた内部空間の温度上昇を防ぐことができる遮熱シートおよび遮熱用品を提供することにある。 The present invention has been made in view of the above background, and its purpose is not only to have water resistance, but also to block the strong radiant heat of the sun, and further to prevent temperature rise in the internal space covered with the sheet. An object of the present invention is to provide a heat shield sheet and a heat shield article that can be used.
本発明者は上記課題を達成するため鋭意検討した結果、所定の耐水性と目付けを有する基布に、低い赤外線放射率を有する金属皮膜層を積層することにより、所望の遮熱シートが得られることを見出し、さらに鋭意検討を重ねることにより本発明を完成するに至った。 As a result of intensive studies to achieve the above-mentioned problems, the present inventor can obtain a desired heat shield sheet by laminating a metal film layer having a low infrared emissivity on a base fabric having a predetermined water resistance and basis weight. As a result, the present invention has been completed by intensive studies.
かくして、本発明によれば「耐水性がＪＩＳ Ｌ１０９２ Ａ法（低水圧法）で測定して５００ｍｍＨ２Ｏ以上であり、かつ目付けが３０ｇ／ｍ２以上である、繊維材料からなる基布に金属皮膜層が積層されており、該金属皮膜層表面の赤外線放射率が０．１〜０．５の範囲であることを特徴とする遮熱シート。」が提供される。 Thus, according to the present invention, “a metal cloth is formed on a base fabric made of a fiber material having a water resistance of 500 mmH 2 O or more as measured by JIS L1092 A method (low water pressure method) and a basis weight of 30 g / m 2 or more. There is provided a heat-shielding sheet characterized in that the coating layer is laminated, and the infrared emissivity of the surface of the metallic coating layer is in the range of 0.1 to 0.5.
ただし、前記の赤外線放射率は、波長４〜２０μｍにおける金属皮膜層表面の積分放射率を測定するものとする。
その際、前記の金属皮膜層がアルミニウムからなることが好ましい。また、前記の繊維材料がポリエステル繊維であることが好ましい。また、前記の基布が、カバーファクター（ＣＦ）が１４００以上の織物であることが好ましい。
However, the said infrared emissivity shall measure the integral emissivity of the metal film layer surface in wavelength 4-20 micrometers.
In that case, it is preferable that the said metal film layer consists of aluminum. Moreover, it is preferable that the said fiber material is a polyester fiber. The base fabric is preferably a woven fabric having a cover factor (CF) of 1400 or more.
ただし、カバーファクター（ＣＦ）は下記式により算出される。
ＣＦ＝（ＤＷｐ／１．１）１／２×ＭＷｐ＋（ＤＷｆ／１．１）１／２×ＭＷｆ
［ＤＷｐは経糸総繊度（ｄｔｅｘ）、ＭＷｐは経糸織密度（本／２．５４ｃｍ）、ＤＷｆは緯糸総繊度（ｄｔｅｘ）、ＭＷｆは緯糸織密度（本／２．５４ｃｍ）である。］
However, the cover factor (CF) is calculated by the following formula.
CF = (DWp / 1.1) 1/2 × MWp + (DWf / 1.1) 1/2 × MWf
[DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm). ]
前記の基布において、引裂き強度がＪＩＳ Ｌ１０９６ Ｄ法（ペンジュラム法）で測定して１５Ｎ以上であることが好ましい。かかる基布に撥水加工が施されていることが好ましい。また、本発明の遮熱シートにおいて、金属皮膜層の上にさらにオレフィン系シートが積層されていることが好ましい。 In the above-mentioned base fabric, the tear strength is preferably 15 N or more as measured by the JIS L1096 D method (penjuram method). Such a base fabric is preferably subjected to water repellent treatment. In the heat shield sheet of the present invention, it is preferable that an olefin-based sheet is further laminated on the metal film layer.
また、本発明によれば、前記の遮熱シートを、金属皮膜層が内側に位置するよう用いてなる、テントまたは日傘の遮熱用品が提供される。 Moreover, according to this invention, the heat-insulating article of a tent or a parasol which uses the said heat-shielding sheet | seat so that a metal film layer may be located inside is provided.
本発明によれば、耐水性を有するだけでなく太陽の強い放射熱をさえぎることができ、さらにはシートで覆われた内部空間の温度上昇を防ぐことができる遮熱シートおよび遮熱用品が得られる。 According to the present invention, there are obtained a heat shielding sheet and a heat shielding article that not only have water resistance but also can block the strong radiant heat of the sun and further prevent the temperature rise in the internal space covered with the sheet. It is done.
以下、本発明の実施の形態について詳細に説明する。
まず、本発明の遮熱シートにおいて、基布は繊維材料からなり、耐水性がＪＩＳ Ｌ１０９２ Ａ法（低水圧法）で測定して５００ｍｍＨ２Ｏ以上（好ましくは５００〜２０００ｍｍＨ２Ｏ）であり、かつ目付けが３０ｇ／ｍ２以上（好ましくは１５０〜３００ｇ／ｍ２）であることが肝要である。
Hereinafter, embodiments of the present invention will be described in detail.
First, in the thermal sheet barrier of the present invention, the base fabric is made of fiber material, 500mmH 2 O or water resistance as measured by JIS L1092 A method (low water pressure method) (preferably 500~2000mmH 2 O) a, In addition, it is important that the basis weight is 30 g / m 2 or more (preferably 150 to 300 g / m 2 ).
ここで、基布の耐水性が５００ｍｍＨ２Ｏよりも小さいと、遮熱シートをテントや傘などとして使用すると雨漏りするおそれがあり好ましくない。また、目付けが３０ｇ／ｍ２よりも小さいと、太陽の強い放射熱をさえぎることができないだけでなく、布帛の引裂き強度が低下し好ましくない。さらには、かかる目付けは大きいほど遮熱性が向上するが、あまり目付けが大きくなると作業性が低下するおそれがある。 Here, when the water resistance of the base fabric is smaller than 500 mmH 2 O, it is not preferable that the heat shielding sheet is used as a tent, an umbrella, or the like because rain may leak. On the other hand, if the basis weight is less than 30 g / m 2, not only the strong radiant heat of the sun cannot be blocked, but also the tear strength of the fabric is lowered, which is not preferable. Furthermore, the greater the basis weight, the better the heat shielding property. However, if the basis weight becomes too large, the workability may decrease.
基布を形成する繊維材料としては、特に限定されず、綿、麻、絹等の天然繊維、レーヨンなどの再生繊維、アセテートなどの半合成繊維、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリ乳酸などに代表されるポリエステル繊維、ポリエーテルエステル繊維、アクリル繊維、ナイロン繊維、アラミド繊維、ポリオレフィン繊維、ポリアリレート繊維、炭素繊維などの合成繊維が例示される。これらの繊維は１種類でもよいし、複数の組合せであってもよい。使用する繊維材料の種類により、高強度、耐摩耗性、難燃性、易リサイクル性、生分解性等の機能を本発明の遮熱シートに付加することができる。なかでも、シートの引裂き強度や染色性等の点でポリエステル繊維が好ましく例示される。 The fiber material forming the base fabric is not particularly limited, and natural fibers such as cotton, hemp and silk, regenerated fibers such as rayon, semi-synthetic fibers such as acetate, polyethylene terephthalate, polytrimethylene terephthalate, and polylactic acid. Examples thereof include synthetic fibers such as polyester fiber, polyether ester fiber, acrylic fiber, nylon fiber, aramid fiber, polyolefin fiber, polyarylate fiber, and carbon fiber. These fibers may be one type or a plurality of combinations. Depending on the type of fiber material used, functions such as high strength, abrasion resistance, flame retardancy, easy recyclability, and biodegradability can be added to the heat shield sheet of the present invention. Of these, polyester fibers are preferably exemplified in terms of the tear strength and dyeability of the sheet.
これら繊維の形態も特に限定されるものではなく、長繊維（マルチフィラメント）、短繊維、これらの複合糸条、さらには、仮撚捲縮加工糸、空気加工糸、紡績糸、撚糸等が例示される。該繊維の横断面形状も特に限定されず丸、三角、扁平、中空など適宜選定される。 The form of these fibers is not particularly limited, and examples thereof include long fibers (multifilaments), short fibers, composite yarns thereof, and false twist crimped yarn, air processed yarn, spun yarn, twisted yarn, and the like. Is done. The cross-sectional shape of the fiber is not particularly limited, and is appropriately selected from a circle, a triangle, a flat shape, a hollow shape, and the like.
前記の繊維の総繊度、単糸繊度としては特に限定されないが、耐水性の点で、各々３３〜５５０ｄｔｅｘ（より好ましくは４０〜２２０ｄｔｅｘ）、４．０ｄｔｅｘ以下（より好ましくは０．４〜１．５ｄｔｅｘ）であることが好ましい。特に単糸繊度が４．０ｄｔｅｘよりも大きいと耐水性が低下する恐れがある。 The total fineness and single yarn fineness of the fibers are not particularly limited, but each has a water resistance of 33 to 550 dtex (more preferably 40 to 220 dtex) and 4.0 dtex or less (more preferably 0.4 to 1. 5 dtex). In particular, if the single yarn fineness is larger than 4.0 dtex, the water resistance may be lowered.
基布の組織は特に限定されないが、前記の耐水性を得る上で、平組織、綾組織、朱子組織、およびこれらの変化組織などの織組織を有する織物であることが好ましい。また、かかる織物は、カバーファクター（ＣＦ）が１４００以上（好ましくは１８００〜４０００、特に好ましくは１９００〜２２００）の高密度織物であることが好ましい。このような高密度であると、前記のような耐水性および後記の引裂き強度が容易に得られる。なお、カバーファクター（ＣＦ）は下記式により算出される。
ＣＦ＝（ＤＷｐ／１．１）１／２×ＭＷｐ＋（ＤＷｆ／１．１）１／２×ＭＷｆ
［ＤＷｐは経糸総繊度（ｄｔｅｘ）、ＭＷｐは経糸織密度（本／２．５４ｃｍ）、ＤＷｆは緯糸総繊度（ｄｔｅｘ）、ＭＷｆは緯糸織密度（本／２．５４ｃｍ）である。］
The structure of the base fabric is not particularly limited. However, in order to obtain the above water resistance, a fabric having a woven structure such as a plain structure, a twill structure, a satin structure, and these changed structures is preferable. The woven fabric is preferably a high-density woven fabric having a cover factor (CF) of 1400 or more (preferably 1800 to 4000, particularly preferably 1900 to 2200). With such a high density, the water resistance and tear strength described below can be easily obtained. The cover factor (CF) is calculated by the following formula.
CF = (DWp / 1.1) 1/2 × MWp + (DWf / 1.1) 1/2 × MWf
[DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm). ]
かかる基布の引裂き強度としては、ＪＩＳ Ｌ１０９６ Ｄ法（ペンジュラム法）で測定して１５Ｎ以上（好ましくは１５〜３０Ｎ）であると、テントの膜体として使用でき好ましい。 The tear strength of such a base fabric is preferably 15 N or more (preferably 15 to 30 N) as measured by the JIS L1096 D method (pendulum method), so that it can be used as a film body of a tent.
前記の基布には、染色加工、起毛加工、撥水加工、吸湿吸水加工、制電加工、抗菌防臭加工、防炎加工、難燃加工、マイナスイオン発生加工、カレンダー加工など公知の加工が適宜付加されていてもさしつかえない。特に基布に撥水加工が施されていると、耐水性がさらに向上し好ましい。かかる撥水加工は、通常のものでよい。例えば、特許第３１３３２２７号公報や特公平４−５７８６号公報に記載された方法が好適である。すなわち、撥水剤として市販のふっ素系撥水剤（例えば、旭硝子（株）製、アサヒガードＬＳ−３１７）を使用し、必要に応じてメラミン樹脂、触媒を混合して撥水剤の濃度が３〜１５重量％程度の加工剤とし、ピックアップ率５０〜９０％程度で、該加工剤を用いて織物の表面を処理する方法である。加工剤で織物の表面を処理する方法としては、パッド法、スプレー法などが例示され、なかでも、加工剤を織物内部まで浸透させる上でパッド法が最も好ましい。なお、前記ピックアップ率とは、加工剤の織物（加工剤付与前）重量に対する重量割合（％）である。 For the base fabric, known processing such as dyeing, raising, water-repellent, moisture-absorbing and absorbing, antistatic, antibacterial and deodorant, flameproof, flame retardant, negative ion generation, and calendering are appropriately used. It can be added. In particular, when the base fabric is water-repellent, the water resistance is further improved. Such water repellent processing may be a normal one. For example, the methods described in Japanese Patent No. 3133227 and Japanese Patent Publication No. 4-5786 are suitable. That is, a commercially available fluorine-based water repellent (for example, Asahi Guard LS-317, manufactured by Asahi Glass Co., Ltd.) is used as the water repellent, and the concentration of the water repellent is adjusted by mixing a melamine resin and a catalyst as necessary. In this method, the surface of the woven fabric is treated with the processing agent at a pickup rate of about 50 to 90% with a processing agent of about 3 to 15% by weight. Examples of the method for treating the surface of the woven fabric with the processing agent include a pad method and a spray method. Among them, the pad method is most preferable for allowing the processing agent to penetrate into the woven fabric. In addition, the said pick-up rate is the weight ratio (%) with respect to the textile fabric (before processing agent provision) weight of a processing agent.
本発明の遮熱シートは、かかる基布の少なくとも１面に、赤外線放射率が０．１〜０．５（好ましくは０．１〜０．３）の範囲である金属皮膜層が積層されてなるものである。ただし、前記の赤外線表面放射率は、波長４〜２０μｍにおける金属皮膜層表面の積分放射率を測定するものとする。 In the heat shield sheet of the present invention, a metal film layer having an infrared emissivity in the range of 0.1 to 0.5 (preferably 0.1 to 0.3) is laminated on at least one surface of the base fabric. It will be. However, the said infrared surface emissivity shall measure the integral emissivity of the metal film layer surface in wavelength 4-20 micrometers.
前記の金属皮膜層は基布の両面に積層されていてもよいが、テント等として使用する際に内側になる面にのみ積層されておればよい。基布に撥水加工が施されている場合には、外側の面に撥水加工された繊維が現れるので、優れた耐水性を呈しながら、シートで覆われた内部空間の温度上昇を防ぐことが可能となる。 The metal film layer may be laminated on both surfaces of the base fabric, but it is sufficient that the metal film layer is laminated only on the inner surface when used as a tent or the like. If the fabric is water-repellent, the water-repellent fibers will appear on the outer surface, so it will have excellent water resistance while preventing temperature rise in the interior space covered with the sheet. Is possible.
ここで、前記の赤外線放射率が０．５以下であることが特に肝要である。赤外線放射率が０．５よりも大きいと、本発明の遮熱シートを金属皮膜層が内側に位置するようなテントとして使用する際、テントからの放射熱がテントのなかの人に伝わり不快感を感じはじめる。 Here, it is particularly important that the infrared emissivity is 0.5 or less. When the infrared emissivity is larger than 0.5, when the heat shield sheet of the present invention is used as a tent in which the metal film layer is located on the inner side, the radiant heat from the tent is transmitted to the person in the tent and is uncomfortable. Begin to feel.
このことは、下記式に示したステファン・ボルツマンの法則でも予測可能である。
テントは太陽光エネルギーを吸収し高温に達する。仮にテントの温度が９０℃、テント裏側の赤外線放射率が０．５、テント内の人の皮膚温度が３４℃、肌の赤外線放射率が０．９８とし、上記式にて計算すると、テントからの熱放射エネルギーが４２４．３ｋｃａｌ・ｍ−２・ｈ−１となり、人からの放射エネルギー４２５．６ｋｃａｌ・ｍ−２・ｈ−１を下回ることから、放射により熱が人体からテントへ伝達することになり、放射という熱移動の点から人が不快感を感じることはない。 The tent absorbs solar energy and reaches high temperatures. If the temperature of the tent is 90 ° C, the infrared emissivity of the back side of the tent is 0.5, the skin temperature of the person in the tent is 34 ° C, and the infrared emissivity of the skin is 0.98. Heat radiation energy of 424.3 kcal · m −2 · h −1 , which is less than the radiation energy from humans 425.6 kcal · m −2 · h −1 , heat is transferred from the human body to the tent by radiation. Therefore, humans do not feel uncomfortable from the point of heat transfer of radiation.
前記の金属皮膜層は、真空蒸着やスパッタリングといった公知の方法で基布の面上に直接積層することができる。金属皮膜層の厚みとしては、１．０×１０−６×１．０×１０−４ｍｍの範囲であることが好ましい。また、金属の種類としては、アルミニウム、銅、金、銀、ニッケル、鉛、クロム等が低放射率であることが知られており好ましいが、コスト、環境面、汎用性を考慮するとアルミニウムが特に好ましい。 The metal film layer can be directly laminated on the surface of the base fabric by a known method such as vacuum deposition or sputtering. The thickness of the metal film layer is preferably in the range of 1.0 × 10 −6 × 1.0 × 10 −4 mm. As the metal type, aluminum, copper, gold, silver, nickel, lead, chromium and the like are known to have low emissivity, and aluminum is particularly preferable in consideration of cost, environment, and versatility. preferable.
本発明の遮熱シートにおいて、金属皮膜層の上に高分子樹脂フィルムがさらに積層されていると、該高分子樹脂フィルムが金属皮膜層の保護フィルムとなり耐久性が向上し、耐水性も向上し好ましい。かかる高分子樹脂フィルムとしては、赤外線放射率の低いオレフィン系樹脂フィルムが特に好ましい。また、かかる高分子樹脂フィルムの厚さとしては、耐久性と柔軟性とのバランスから５〜２０μｍの範囲であることが好ましい。 In the heat-shielding sheet of the present invention, when a polymer resin film is further laminated on the metal film layer, the polymer resin film becomes a protective film for the metal film layer, improving durability and improving water resistance. preferable. As such a polymer resin film, an olefin resin film having a low infrared emissivity is particularly preferable. The thickness of the polymer resin film is preferably in the range of 5 to 20 μm from the balance between durability and flexibility.
なお、金属皮膜層の上に高分子樹脂フィルムを積層する場合は、高分子樹脂フィルムに金属皮膜層を形成したのち、金属皮膜層と基布とを接着させると、均一な金属皮膜層が得られやすく好ましい。その際、接着の方法としては特に限定されずラミネーション法や接着剤による方法など通常の方法でよい。 When a polymer resin film is laminated on the metal film layer, a uniform metal film layer can be obtained by forming the metal film layer on the polymer resin film and then bonding the metal film layer and the base fabric. It is easy to be preferred. In this case, the bonding method is not particularly limited, and a normal method such as a lamination method or a method using an adhesive may be used.
本発明の遮熱シートにおいて、所定の耐水性と目付けを有する基布に、０．１〜０．５と低い赤外線放射率を有する金属皮膜層が積層されているので、耐水性を有するだけでなく太陽の強い放射熱をさえぎることができ、さらにはシートで覆われた内部空間の温度上昇を防ぐことができる。 In the heat-shielding sheet of the present invention, since a metal film layer having a low infrared emissivity of 0.1 to 0.5 is laminated on a base fabric having a predetermined water resistance and basis weight, it has only water resistance. In addition, the strong radiant heat of the sun can be blocked, and further, the temperature rise of the internal space covered with the sheet can be prevented.
また、本発明によれば、遮熱シートを、金属皮膜層が内側に位置するよう用いてなる、テントまたは日傘の遮熱用品が提供される。かかる遮熱用品を使用すると、強い太陽光を受けても放射熱がテントのなかの人に伝わらず不快感を感じることがない。 Moreover, according to this invention, the heat-insulating article of a tent or a parasol which uses a heat-shielding sheet so that a metal film layer may be located inside is provided. When such a heat shielding article is used, even if it receives strong sunlight, the radiant heat is not transmitted to the person in the tent and does not feel uncomfortable.
次に本発明の実施例及び比較例を詳述するが、本発明はこれらによって限定されるものではない。なお、実施例中の各測定項目は下記の方法で測定した。
（１）赤外線放射率
赤外線分光放射計ＪＩＲ−５００Ｚ（日本電子（株）製を使用し、４〜２０μｍの波長領域における積分放射率を測定した。
（２）引裂き強度
ＪＩＳ Ｌ １０９６ Ｄ法（ペンジュラム法）により測定した。なお、ｎ数は５でその平均値を算出した。
（３）耐水性
ＪＩＳ Ｌ １０９２ Ａ法（低水圧法）により測定した。なお、ｎ数は５でその平均値を算出した。
（４）暑熱感評価
無風晴天の日を選び屋外にて、１辺が２ｍのスチールパイプで作製された立方体の天井面を試料にて覆い、３名の被験者にシート下中央に５分間立位安静にしてもらい、下記の指標を用いて暑熱感を報告してもらい、○を２点、△を１点、×を０点とし３名の評価の合計得点をもって暑熱感を評価した。なお、屋外の気温は２８℃であった。
○：放射による暑さを感じない。
△：放射による暑さを少し感じる。
×：天井から暑さを感じる。
Next, although the Example and comparative example of this invention are explained in full detail, this invention is not limited by these. In addition, each measurement item in an Example was measured with the following method.
(1) Infrared emissivity Infrared spectroradiometer JIR-500Z (manufactured by JEOL Ltd.) was used to measure the integral emissivity in a wavelength region of 4 to 20 μm.
(2) Tear strength Measured by the JIS L 1096 D method (pendulum method). In addition, n number was set to 5 and the average value was calculated.
(3) Water resistance Measured by JIS L 1092 A method (low water pressure method). In addition, n number was set to 5 and the average value was calculated.
(4) Evaluation of heat sensation Choose a day when there is no wind, and outdoors, cover the ceiling of a cube made of steel pipe with a side of 2m with a sample and stand for 3 minutes in the center under the seat for 3 subjects. The sensation of heat was reported using the following indices, and the sensation of heat was evaluated with a total score of three people, with ◯ as 2 points, △ as 1 point, and x as 0 point. The outdoor temperature was 28 ° C.
○: The heat from radiation is not felt.
Δ: I feel a little heat from radiation.
X: Feel the heat from the ceiling.
［実施例１］
１２７ｄｔｅｘ／１６８ｆｉｌの通常のポリエチレンテレフタレートマルチフィラメントを経緯に用いて、平組織織物を製織した後、該織物に、常法により黒色染色および撥水処理を施した。得られた織物において、目付け１６０ｇ／ｍ２、経糸密度１３８本／２．５４ｃｍ、緯糸密度８２本／２．５４ｃｍ、カバーファクター（ＣＦ）２３５２、引裂き強度２０N、耐水性６００ｍｍＨ２Ｏであった。
[Example 1]
A plain tissue woven fabric was woven using a normal polyethylene terephthalate multifilament of 127 dtex / 168 fil, and the fabric was subjected to black dyeing and water repellent treatment by a conventional method. The obtained woven fabric had a basis weight of 160 g / m 2 , a warp density of 138 pieces / 2.54 cm, a weft density of 82 pieces / 2.54 cm, a cover factor (CF) of 2352, a tear strength of 20 N, and a water resistance of 600 mmH 2 O.
一方、厚さ１５μｍのポリエチレンフィルム（東セロ（株）製）の片面に常法によりアルミ蒸着を施した。そして、該フィルムと前記の織物とを、蒸着面が織物と接するようにして、高温高圧処理で貼り合せることにより、遮熱シートを得た。 On the other hand, aluminum vapor deposition was performed on one side of a 15 μm thick polyethylene film (manufactured by Tosero Co., Ltd.) by a conventional method. And the heat shielding sheet was obtained by bonding this film and the said textile fabric by a high temperature / high pressure process so that a vapor deposition surface might contact | connect a textile fabric.
かくして得られた遮熱シートにおいて、フィルム側から赤外線放射率を測定したところ、０．２４であった。また、フィルムが被験者側になるよう試料を配して暑熱感を評価したところ、シートの表面温度が６５℃に達していたにもかかわらず、３名の被験者全員が○と評価し、６点満点であった。 In the heat shielding sheet thus obtained, the infrared emissivity was measured from the film side and found to be 0.24. In addition, when the sample was placed so that the film was on the subject side and the hot feeling was evaluated, all three subjects evaluated it as ○ even though the surface temperature of the sheet reached 65 ° C., 6 points It was a perfect score.
［実施例２］
実施例１と同じ織物の片面に、常法によりアルミスパッタリングを施して遮熱シートを得た。得られた遮熱シートにおいて、アルミスパッタリング面側から赤外線放射率を測定したところ、０．５０であった。また、アルミスパッタリング面が被験者側になるよう試料を配して暑熱感を評価したところ、シートの表面温度が６５℃に達していたにもかかわらず、１名の被験者が○、２名の被験者が△と評価し、６点満点中４点であった。
[Example 2]
One side of the same fabric as in Example 1 was subjected to aluminum sputtering by a conventional method to obtain a heat shield sheet. In the obtained heat shield sheet, the infrared emissivity was measured from the aluminum sputtering surface side and found to be 0.50. In addition, when the sample was placed so that the aluminum sputtering surface was on the subject side and the heat sensation was evaluated, one subject was ○ despite the fact that the surface temperature of the sheet reached 65 ° C., two subjects Was evaluated as Δ and was 4 out of 6 points.
［比較例１］
実施例１と同じ織物だけを使用して赤外線放射率を測定したところ、０．９６であった。また、暑熱感を評価したところ、シートの表面温度が６５℃に達しており、３名の被験者が×と評価し、６点満点中０点であった。
[Comparative Example 1]
When the infrared emissivity was measured using only the same fabric as in Example 1, it was 0.96. Moreover, when the hot feeling was evaluated, the surface temperature of the sheet reached 65 ° C., and three subjects evaluated it as “x”, which was 0 points out of 6 points.
本発明によれば、耐水性を有するだけでなく太陽の強い放射熱をさえぎることができ、さらにはシートで覆われた内部空間の温度上昇を防ぐことができる遮熱シートおよび遮熱用品が得られ、工業的価値は極めて大である。 According to the present invention, there are obtained a heat shielding sheet and a heat shielding article that not only have water resistance but also can block the strong radiant heat of the sun and further prevent the temperature rise in the internal space covered with the sheet. Industrial value is extremely large.
Claims (8)
ただし、前記の赤外線放射率は、波長４〜２０μｍにおける金属皮膜層表面の積分放射率を測定するものとする。 A metal film layer is laminated on a base fabric made of a fiber material having a water resistance of 500 mmH 2 O or more as measured by JIS L1092 A method (low water pressure method) and a basis weight of 30 g / m 2 or more. An infrared radiation emissivity on the surface of the metal coating layer is in the range of 0.1 to 0.5.
However, the said infrared emissivity shall measure the integral emissivity of the metal film layer surface in wavelength 4-20 micrometers.
ただし、カバーファクター（ＣＦ）は下記式により算出される。
ＣＦ＝（ＤＷｐ／１．１）１／２×ＭＷｐ＋（ＤＷｆ／１．１）１／２×ＭＷｆ
［ＤＷｐは経糸総繊度（ｄｔｅｘ）、ＭＷｐは経糸織密度（本／２．５４ｃｍ）、ＤＷｆは緯糸総繊度（ｄｔｅｘ）、ＭＷｆは緯糸織密度（本／２．５４ｃｍ）である。］ The heat-insulating sheet according to any one of claims 1 to 3, wherein the base fabric is a woven fabric having a cover factor (CF) of 1400 or more.
However, the cover factor (CF) is calculated by the following formula.
CF = (DWp / 1.1) 1/2 × MWp + (DWf / 1.1) 1/2 × MWf
[DWp is the total warp fineness (dtex), MWp is the warp weave density (main / 2.54 cm), DWf is the total weft fineness (dtex), and MWf is the weft weave density (main / 2.54 cm). ]
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| JP2011132631A (en) * | 2009-12-24 | 2011-07-07 | Teijin Fibers Ltd | Woven fabric with high heat shield property and fiber product |
| JP2017140770A (en) * | 2016-02-10 | 2017-08-17 | 帝人株式会社 | Heat-shielding fabric and fiber product |
| JP2019181804A (en) * | 2018-04-10 | 2019-10-24 | 帝人フロンティア株式会社 | Thermal barrier fabric and fiber product |
| JP2022043851A (en) * | 2020-09-04 | 2022-03-16 | テックワン株式会社 | Sheet and parasol |
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