JP4343724B2 - Humidity control wallpaper - Google Patents
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- JP4343724B2 JP4343724B2 JP2004026354A JP2004026354A JP4343724B2 JP 4343724 B2 JP4343724 B2 JP 4343724B2 JP 2004026354 A JP2004026354 A JP 2004026354A JP 2004026354 A JP2004026354 A JP 2004026354A JP 4343724 B2 JP4343724 B2 JP 4343724B2
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- 239000000835 fiber Substances 0.000 claims description 75
- -1 polyethylene terephthalate Polymers 0.000 claims description 15
- 230000035699 permeability Effects 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 229920000098 polyolefin Polymers 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims description 4
- 229920001634 Copolyester Polymers 0.000 claims description 2
- 229920002125 Sokalan® Polymers 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims description 2
- 239000004584 polyacrylic acid Substances 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 159000000000 sodium salts Chemical class 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 description 37
- 239000010410 layer Substances 0.000 description 30
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000002156 mixing Methods 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 6
- 239000004743 Polypropylene Substances 0.000 description 6
- 230000008859 change Effects 0.000 description 6
- 238000003795 desorption Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 229920000573 polyethylene Polymers 0.000 description 6
- 229920001155 polypropylene Polymers 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 239000000306 component Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000004745 nonwoven fabric Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 238000009833 condensation Methods 0.000 description 3
- 230000005494 condensation Effects 0.000 description 3
- 239000003063 flame retardant Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000004750 melt-blown nonwoven Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 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 2
- 230000001877 deodorizing effect Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003230 hygroscopic agent Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000002023 wood Substances 0.000 description 2
- 241000238876 Acari Species 0.000 description 1
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000012792 core layer Substances 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000002781 deodorant agent Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000000417 fungicide Substances 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Landscapes
- Building Environments (AREA)
- Drying Of Gases (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Description
本発明は、室内を適度な湿度に調整する調湿機能を有し、吸放湿による寸法変化が少ない寸法安定性に優れた壁紙に関するものである。 The present invention relates to a wallpaper having a humidity control function for adjusting a room to an appropriate humidity and having excellent dimensional stability with little dimensional change due to moisture absorption / release.
従来の日本の家屋は、その構成材料として木あるいは土を用いていたため、材料自体の持つ吸放湿性により防露性の良い建築物を実現してきた。しかし、近年、建築物の高気密化が進められ、耐火性、気密性を重視した材料が用いられるようになってきた。これらの材料は木あるいは土が持つような吸放湿機能が無いため、室内外の温度差で結露が発生する。さらに、このように発生した水分はカビやダニの繁殖を促進し、人体や居住環境に悪影響をもたらす原因となる。 Traditional Japanese houses have used wood or earth as a constituent material, and have realized a building with good dew-proofing properties due to the moisture absorption and desorption properties of the material itself. However, in recent years, the airtightness of buildings has been promoted, and materials that emphasize fire resistance and airtightness have come to be used. Since these materials do not have a moisture absorption / release function like that of wood or earth, condensation occurs due to temperature differences between the inside and outside of the room. In addition, the water generated in this way promotes the growth of mold and mites and causes adverse effects on the human body and living environment.
これらの問題を解決するため、室内の湿度調整を行ない、防露性を得ることができる調湿性建材の開発が行なわれている。例えば、特許文献１には吸湿剤として高温活性化処理したゼオライトを用いセメント等を使用して成形した調湿性建材が記載されている。また、特許文献２には吸湿剤として珪藻土を用い焼成した調湿性材料が記載されている。さらには、これらの欠点である吸放湿速度を改善するために調湿建材の比表面積、細孔の半径および細孔の容積を規定したものが特許文献３に記載されている。
In order to solve these problems, humidity-controlled building materials that can adjust the humidity in the room and obtain dew-proofing properties have been developed. For example, Patent Document 1 describes a humidity-controllable building material molded using cement or the like using zeolite that has been subjected to high-temperature activation treatment as a hygroscopic agent. Patent Document 2 describes a humidity control material fired using diatomaceous earth as a hygroscopic agent. Further,
しかし、これらは調湿性能は有していても、材料自体の重量が重いため壁に貼り付ける時にはその重量にも耐えることのできる強力な接着剤あるいは糊材が必要であり、このような接着剤あるいは糊材は一般には入手困難なため施工の際には施工業者に依頼する必要があった。 However, even though they have humidity control performance, the weight of the material itself is heavy, so a strong adhesive or paste that can withstand that weight is required when affixing to the wall. Since it is generally difficult to obtain the adhesive or the paste material, it is necessary to ask a contractor for the construction.
また、特許文献４には芯層に超高吸水性繊維と脱臭繊維を使用した壁紙が記載されている。超高吸水性繊維を使用することにより高吸水性、高吸水速度、保水性、吸放湿特性を有し、調湿材として優れた機能を発揮できると記載されている。しかしながら、超高吸水性繊維は吸水することにより膨潤し、完全にもとの状態まで戻ることはできないため、壁紙として使用するには不適当である。さらに、吸放湿により寸法も大きく変化するため壁紙として使用するとすぐに隙間ができる恐れがある。 Patent Document 4 describes a wallpaper using ultra-high water absorption fibers and deodorizing fibers in the core layer. It is described that by using an ultra-high water-absorbing fiber, it has high water absorption, high water absorption speed, water retention and moisture absorption / release characteristics, and can exhibit an excellent function as a humidity control material. However, the super-high water-absorbing fiber swells by absorbing water and cannot return to its original state, and is therefore unsuitable for use as wallpaper. Furthermore, since the dimensions change greatly due to moisture absorption and desorption, there is a possibility that a gap is formed immediately when used as wallpaper.
本発明は上記問題点を解消し、室内の調湿性能に優れ、施工後の寸法安定性にも優れ、さらには軽量で施工も容易な壁紙を提供することにある。 An object of the present invention is to solve the above-mentioned problems, to provide a wallpaper that is excellent in indoor humidity control performance, excellent in dimensional stability after construction, and lightweight and easy to construct.
上記課題は、主として吸放湿性繊維と熱融着性繊維からなる吸放湿層と、吸放湿層を挟んだ表面シートと裏面シートの三層構造からなり、該吸放湿層中の熱融着性繊維の含有率が１０〜７０重量％であり、また該表面シートが透湿性または通気性を有し、かつ、前記の吸放湿層と表面シートと裏面シートとが全体に接着させたことを特徴とする調湿壁紙により解決される。
The above-mentioned problem consists of a three-layer structure of a moisture absorbing / releasing layer mainly composed of moisture absorbing / releasing fibers and heat-fusible fibers, and a front sheet and a back sheet sandwiching the moisture absorbing / releasing layer, and the heat in the moisture absorbing / releasing layer. a 10 to 70 wt% content of the fusible fibers, also the surface sheet has a moisture permeability or breathability, and to adhere to the whole and the moisture layer and the topsheet and the backsheet of It is solved by the humidity control wallpaper.
本発明により、結露発生を抑制し、室内を適度な湿度に保つことが可能となる。また、寸法安定性にも優れるため、施工後に継目にできる隙間を抑制することもできる。さらには軽量であるため、施工も容易である。 According to the present invention, it is possible to suppress the occurrence of condensation and keep the room at an appropriate humidity. Moreover, since it is excellent also in dimensional stability, the clearance gap which can be made to the joint after construction can also be suppressed. Furthermore, since it is lightweight, construction is easy.
本発明は、一般の住宅に好適に用いられることはもとより、工事現場等で使用される断熱性に乏しく、結露の発生が多いプレハブ小屋での使用も有効である。 INDUSTRIAL APPLICABILITY The present invention is effective for use in prefabricated huts which are not only suitably used for ordinary houses but also have poor heat insulation properties used at construction sites and the like, and where condensation is frequently generated.
以下に本発明の実施の形態について、添付図面に基づいて詳細に説明する。図１は本実施形態にかかる調湿壁紙の断面図である。 Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a cross-sectional view of a humidity control wallpaper according to the present embodiment.
図１に示すように本発明の調湿壁紙１は吸放湿層２と、吸放湿層２を挟んだ表面シート３および裏面シート４の三層構造からなる。表面シート３および裏面シート４がなく、吸放湿層２が表面に露出していると吸湿時にベトツキが感じられたり、放湿（乾燥）時に吸放湿性繊維が脱落しやすくなる。
As shown in FIG. 1, the humidity control wallpaper 1 of the present invention has a three-layer structure of a moisture absorbing / releasing layer 2, a
吸放湿層２に用いる吸放湿性繊維とは、周囲の湿度環境に応じて吸湿・放湿を行なう繊維である。好ましくは２０℃、９５％ＲＨにおける吸湿率と２０℃、４０％ＲＨにおける吸湿率の差が４０重量％以上のものである。吸湿率の差が４０重量％以上の場合は急激な湿度変化に対しても迅速に吸放湿が行なわれ、周囲を適度な湿度に調湿することができる。さらに好ましくは吸湿率の差が６０重量％以上である。 The moisture absorbing / releasing fibers used in the moisture absorbing / releasing layer 2 are fibers that absorb and release moisture according to the surrounding humidity environment. Preferably, the difference between the moisture absorption rate at 20 ° C. and 95% RH and the moisture absorption rate at 20 ° C. and 40% RH is 40% by weight or more. When the difference in moisture absorption is 40% by weight or more, moisture is quickly absorbed and released even in response to a sudden change in humidity, and the surroundings can be adjusted to an appropriate humidity. More preferably, the difference in moisture absorption is 60% by weight or more.
なお、上記「吸湿率」とは、各条件下で繊維を２４時間放置して吸湿させた時の重量とその繊維の絶乾質量との差をその繊維の絶乾質量で除したときの値である。また、「ＲＨ」とは「相対湿度」の意味である。 The “moisture absorption rate” is a value obtained by dividing the difference between the weight when the fiber is allowed to stand for 24 hours to absorb moisture under each condition and the absolute dry mass of the fiber by the absolute dry mass of the fiber. It is. “RH” means “relative humidity”.
上記特性を備えた吸放湿性繊維の例としては、架橋ポリアクリル酸ナトリウム塩系繊維、アクリル繊維の表面を後加工により加水分解した繊維などが挙げられる。これらの繊維は単独でまたは２種以上を併用してもよい。 Examples of the hygroscopic fiber having the above characteristics include a crosslinked polyacrylic acid sodium salt fiber, a fiber obtained by hydrolyzing the surface of the acrylic fiber by post-processing, and the like. These fibers may be used alone or in combination of two or more.
吸放湿性繊維の市販品としては、例えばカネボウ合繊（株）製、商品名「ベルオアシス」や東洋紡績（株）製、商品名「Ｎ−３８」等が挙げられる。特にベルオアシスは２０℃、９５％ＲＨにおける吸湿率が１４０重量％、４０％ＲＨにおける吸湿率が２２重量％で、その差が１００重量％を超え、さらに該繊維は吸湿速度と放湿速度がほぼ同じであり、急激な湿度変化においても十分に対応することができる。 Examples of commercially available hygroscopic fibers include Kanebo Gosei Co., Ltd., trade name “BEL OASIS”, Toyobo Co., Ltd., trade name “N-38”, and the like. In particular, Bel Oasis has a moisture absorption rate of 140% by weight at 20 ° C. and 95% RH, and a moisture absorption rate of 22% by weight at 40% RH. The difference exceeds 100% by weight, and the fiber has a moisture absorption rate and a moisture release rate. It is almost the same and can sufficiently cope with a sudden change in humidity.
吸放湿層２中の吸放湿性繊維の含有率は任意であるが、好ましくは２０〜９０重量％である。この範囲内であれば優れた吸放湿性能を発揮し、寸法安定性や強度も問題なく使用できる。さらに好ましくは３０〜７０重量％である。 Although the content rate of the moisture absorption / release fiber in the moisture absorption / release layer 2 is arbitrary, it is preferably 20 to 90% by weight. Within this range, excellent moisture absorption and desorption performance is exhibited, and dimensional stability and strength can be used without problems. More preferably, it is 30 to 70% by weight.
吸放湿層２中に用いる熱融着性繊維とは、通常１６０℃以下、好ましくは９０〜１３０℃程度で溶融する成分を含む繊維である。好ましくは、一方より融点の低い融着成分と一方より融点の高い非融着成分からなる複合繊維を用いる。このような熱融着性繊維を用いることにより接着剤を使用することなく適度な空隙を保ちながら繊維同士を接着し、不織布構造体を形成することができる。 The heat-fusible fiber used in the moisture-absorbing / releasing layer 2 is a fiber containing a component that normally melts at 160 ° C. or less, preferably about 90 to 130 ° C. Preferably, a composite fiber composed of a fusion component having a lower melting point than one and a non-fusion component having a higher melting point than one is used. By using such heat-fusible fibers, the nonwoven fabric structure can be formed by adhering the fibers while maintaining an appropriate gap without using an adhesive.
本発明に好ましく用いられる熱融着性繊維の例として、鞘部分に融着成分としてポリオレフィンまたは融点１１０〜１３０℃の共重合ポリエステル、芯部分に非融着成分としてポリオレフィンまたはポリエチレンテレフタレートを使用した芯鞘型熱融着性繊維が挙げられる。鞘部分のポリオレフィンにはポリエチレン、芯成分のポリオレフィンにはポリプロピレンが一般的に用いられる。 Examples of heat-fusible fibers preferably used in the present invention include a core using polyolefin or a copolyester having a melting point of 110 to 130 ° C. as a fusing component in the sheath part and polyolefin or polyethylene terephthalate as the non-fusing component in the core part. A sheath-type heat-fusible fiber is mentioned. Polyethylene is generally used for the polyolefin of the sheath and polypropylene is used for the polyolefin of the core component.
熱融着性繊維の市販品としては、例えばチッソ（株）製、商品名「ＥＳＣ」やユニチカ（株）製、商品名「メルティー」等が挙げられる。 Examples of commercially available heat-fusible fibers include Chisso Corporation, trade name “ESC”, Unitika Ltd., trade name “Melty”, and the like.
吸放湿層２中の熱接着性繊維の含有率は１０〜７０重量％の範囲内である必要がある。この範囲内であれば優れた吸放湿性能を保ちながら、高い寸法安定性や強度が得られる。１０重量％未満では吸放湿による寸法変化が大きくなる。一方、７０重量％を超えると吸放湿性繊維の表面が溶融した熱接着性繊維に被われる範囲が広くなり吸湿性能が著しく低下する。好ましい範囲は３０〜６０重量％である。 The content of the heat-adhesive fiber in the moisture absorbing / releasing layer 2 needs to be in the range of 10 to 70% by weight. Within this range, high dimensional stability and strength can be obtained while maintaining excellent moisture absorption / release performance. If it is less than 10% by weight, the dimensional change due to moisture absorption and desorption becomes large. On the other hand, if it exceeds 70% by weight, the range covered with the heat-adhesive fiber where the surface of the hygroscopic fiber is melted becomes wide, and the hygroscopic performance is remarkably lowered. A preferred range is 30 to 60% by weight.
吸放湿層２には吸放湿性繊維と熱融着性繊維以外の繊維も使用することができる。これらの繊維の種類は特に限定しない。合成繊維、天然繊維、再生繊維等、全ての繊維を使用することができる。また、中空繊維、難燃繊維、消臭繊維、防カビ繊維等の機能性繊維を使用することにより、それぞれの機能を付与することもできる。これらの繊維は２種以上を混合して用いてもよい。 For the moisture absorbing / releasing layer 2, fibers other than moisture absorbing / releasing fibers and heat-fusible fibers can also be used. These fiber types are not particularly limited. All fibers such as synthetic fibers, natural fibers, and regenerated fibers can be used. Moreover, each function can also be provided by using functional fibers, such as a hollow fiber, a flame-retardant fiber, a deodorizing fiber, and an anti-mold fiber. These fibers may be used in combination of two or more.
吸放湿層２には必要に応じて、例えば粉末あるいは粒状の難燃剤、消臭剤、抗菌剤、防カビ剤等の各種の添加剤を添加することもできる。 Various additives such as powdered or granular flame retardants, deodorants, antibacterial agents, and fungicides can be added to the moisture absorption / release layer 2 as necessary.
表面シート３および裏面シート４の素材は特に限定しないが、少なくとも表面シート３には透湿性または通気性を有するシートを用いる必要が有る。表面シート３に用いる透湿性を有するシートとしては、例えば透湿性フィルムが使用できる。また、通気性を有するシートとしてはティッシュ等の紙類、織編物、不織布等の布帛が使用できる。一方、裏面シート４には表面シート３と同様の素材を使用することができるのに加え、フィルムのような透湿性または通気性の無いシートも使用することができる。表面シート３側のみに透湿性または通気性を有するシートを使用した場合は、表面シート３側を室内側にして施工する。
The materials of the
また、表面シート３は透湿防水性および／または撥水性を有するものであることが好ましい。これらの機能を有することにより水の吸放湿層２への侵入を抑制することができる。透湿防水性を有するシートの例としては透湿フィルム等が挙げられる。撥水性を有するシートとしては紙類、織編物、不織布等の布帛に撥水加工を施したもの等が挙げられる。
Moreover, it is preferable that the
さらに、透湿性または通気性を有する表面シート３は防汚性および／または耐磨耗性を有するものであることが好ましい。
Furthermore, it is preferable that the
本発明の調湿壁紙１は、目付けが５０〜７００ｇ／ｍ２の範囲内であるであることが好ましい。この範囲内であると優れた吸放湿性とともに軽量で取扱性にも優れたものとなる。さらに好ましくは７０〜５００ｇ／ｍ２である。 The humidity control wallpaper 1 of the present invention preferably has a basis weight in the range of 50 to 700 g / m 2 . Within this range, the moisture absorption and release properties are excellent, and the weight is light and the handling properties are excellent. More preferably, it is 70-500 g / m < 2 >.
本発明の調湿壁紙１は、厚さが０．３〜３ｍｍの範囲内であることが好ましい。この範囲内であると適度な空隙により吸放湿性能の低下がなく、さらに厚さが薄く壁に貼り付けた際に違和感がないものとなる。さらに好ましくは０．５〜２ｍｍである。 The humidity control wallpaper 1 of the present invention preferably has a thickness in the range of 0.3 to 3 mm. Within this range, the moisture absorption and desorption performance is not lowered due to an appropriate gap, and the thickness is thin and there is no sense of incongruity when it is attached to the wall. More preferably, it is 0.5-2 mm.
本発明の調湿壁紙１は、見かけ密度が０．１〜１．０ｇ／ｃｍ３の範囲内であることが好ましい。この範囲内であると適度な空隙が得られ、吸放湿速度の低下がない。さらに好ましくは０．３〜０．７ｇ／ｃｍ３である。 The humidity control wallpaper 1 of the present invention preferably has an apparent density in the range of 0.1 to 1.0 g / cm 3 . When it is within this range, an appropriate gap is obtained and the moisture absorption / release rate does not decrease. More preferably, it is 0.3-0.7 g / cm < 3 >.
本発明の調湿壁紙１は、例えば、吸放湿層２に使用する繊維を混綿、開繊後、カード機にてウェブを作製後、ニードルパンチを行ない不織布とした後に表面シート３および裏面シート４を積層し三層構造とする方法、あるいはカード機にて作製したウェブに直接表面シート３および裏面シート４を積層し、熱処理を施し、熱処理ゾーン出口でローラーで圧縮する等の手段で、全体を接着させた（その結果各層が全面にわたって接着する）三層構造とする方法が挙げられる。また、エアレイ法により一段階で三層構造を作製することもできる。好ましくはエアレイ法であり、エアレイ法によれば強度の弱い吸放湿性繊維であっても高混率化が容易である。
The humidity control wallpaper 1 of the present invention includes, for example, a
エアレイ法の一例としては、吸引ネット上の通気性を有する表面シート３上に吸放湿性繊維と熱融着性繊維を主とする繊維混合物を連続的に散布し吸放湿層２を形成し、次いで、裏面シート４を積層して三層構造とした後、加熱加圧処理して吸放湿層２の繊維間、吸放湿層２と表面シート３および裏面シート４間を全体に接着（各層が全面にわたって接着）した調湿壁紙を形成する方法が挙げられる。
As an example of the air lay method, a fiber mixture mainly composed of moisture absorbing / releasing fibers and heat-fusible fibers is continuously sprayed on a breathable
吸放湿層２と表面シート３および吸放湿層２と裏面シート４間の接着にはポリオレフィン等の熱融着性樹脂または熱可塑性樹脂を使用してもよい。ポリオレフィンとしてはポリエチレンが好ましく使用できる。
For bonding between the moisture absorbing / releasing layer 2 and the
本発明の調湿壁紙１は表面シート３の表面にさらに透湿性または通気性を有する化粧用シートを積層してもよい。
In the humidity control wallpaper 1 of the present invention, a cosmetic sheet having moisture permeability or breathability may be further laminated on the surface of the
本発明の調湿壁紙１は施工性の向上を目的として、裏面シ−トの表面にさらに裏打紙を積層してもよい。裏打紙としては通常のパルプ紙、難燃パルプ紙、加工パルプ紙さらには無機系合成紙、不織布等が挙げられる。 The humidity control wallpaper 1 of the present invention may be further laminated with a backing paper on the surface of the back sheet for the purpose of improving workability. Examples of the backing paper include ordinary pulp paper, flame retardant pulp paper, processed pulp paper, inorganic synthetic paper, and nonwoven fabric.
以下、本発明を実施例により詳しく説明するが、本発明はこれに限定されるものではない。 EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to this.
［実施例１］
吸引ネット上の目付け１５ｇ／ｍ２のポリプロピレンメルトブロー不織布上にポリエチレンパウダーを８ｇ／ｍ２の目付けで散布し、その上にカネボウ合繊（株）製高吸放湿性繊維「ベルオアシス」１０ｄｔｅｘ、６ｍｍとチッソ（株）製熱融着性繊維「ＥＳＣ」４．４ｄｔｅｘ、６ｍｍを７０：３０の混合比で混綿した繊維をエアレイ法により積層した。さらにこの上にポリエチレンパウダーを８ｇ／ｍ２の目付けで散布した後、目付け１５ｇ／ｍ２のポリプロピレンメルトブロー不織布を積層し、１４０℃で加熱処理を施し、さらに加熱処理ゾーン出口にてローラーで圧縮して全体を接着し調湿壁紙を作製した。得られた調湿壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Example 1]
Polyethylene powder is spread on a polypropylene melt blown nonwoven fabric with a basis weight of 15 g / m 2 on a suction net with a basis weight of 8 g / m 2, and a highly hygroscopic fiber “BEL OASIS” 10 dtex, 6 mm, produced by Kanebo Gosei Co., Ltd. Fibers blended with Chisso Co., Ltd. heat-fusible fiber “ESC” 4.4 dtex, 6 mm in a mixing ratio of 70:30 were laminated by the air lay method. Furthermore, after spraying polyethylene powder with a basis weight of 8 g / m 2 on this, a polypropylene melt blown nonwoven fabric with a basis weight of 15 g / m 2 is laminated, heat-treated at 140 ° C., and further compressed with a roller at the heat treatment zone outlet. The whole was glued to make a humidity control wallpaper. The obtained humidity control wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
［実施例２］
高吸放湿性繊維と熱融着性繊維の混合比を５０：５０とする以外は実施例１と同様に調湿壁紙を作製した。得られた調湿壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Example 2]
A humidity control wallpaper was prepared in the same manner as in Example 1 except that the mixing ratio of the high moisture absorbing / releasing fiber and the heat-fusible fiber was 50:50. The obtained humidity control wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
［実施例３］
吸引ネット上の目付け１５ｇ／ｍ２のポリプロピレンメルトブロー不織布上にポリエチレンパウダーを８ｇ／ｍ２の目付けで散布し、その上にカネボウ合繊（株）製高吸放湿性繊維「ベルオアシス」１０ｄｔｅｘ、６ｍｍ、チッソ（株）製熱融着性繊維「ＥＳＣ」４．４ｄｔｅｘ、６ｍｍおよびレギュラーポリエステル５．６ｄｔｅｘ、６ｍｍを３０：３０：４０の混合比で混綿した繊維をエアレイ法により積層した。さらにこの上にポリエチレンパウダーを８ｇ／ｍ２の目付けで散布した後、目付け１５ｇ／ｍ２のポリプロピレンフィルムを積層し、１４０℃で加熱処理を施し、さらに加熱処理ゾーン出口にてローラーで圧縮して全体を接着し調湿壁紙を作製した。得られた調湿壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Example 3]
Polyethylene powder is spread on a polypropylene melt blown nonwoven fabric having a basis weight of 15 g / m 2 on the suction net with a basis weight of 8 g / m 2 . Fibers blended with Chisso Co., Ltd. heat-fusible fiber “ESC” 4.4 dtex, 6 mm and regular polyester 5.6 dtex, 6 mm in a mixing ratio of 30:30:40 were laminated by the air lay method. Furthermore, after spraying polyethylene powder with a basis weight of 8 g / m 2 on this, a polypropylene film with a basis weight of 15 g / m 2 is laminated, heat-treated at 140 ° C., and further compressed with a roller at the exit of the heat treatment zone. The whole was glued to make a humidity control wallpaper. The obtained humidity control wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
［実施例４］
吸放湿層に使用する混綿繊維の使用量を変える以外は実施例３と同様に調湿壁紙を作製した。得られた調湿壁紙は目付け５００ｇ／ｍ２、厚さ１．３ｍｍ、見かけ密度０．３８５ｇ／ｃｍ３であった。
[Example 4]
A humidity control wallpaper was prepared in the same manner as in Example 3 except that the amount of the mixed cotton fiber used in the moisture absorbing / releasing layer was changed. The obtained humidity control wallpaper had a basis weight of 500 g / m 2 , a thickness of 1.3 mm, and an apparent density of 0.385 g / cm 3 .
［実施例５］
高吸放湿性繊維、熱融着性繊維およびレギュラーポリエステルの混合比を２０：３０：５０とする以外は実施例３と同様に調湿壁紙を作製した。得られた調湿壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Example 5]
A humidity control wallpaper was prepared in the same manner as in Example 3 except that the mixing ratio of the highly moisture-absorbing / releasing fiber, the heat-fusible fiber and the regular polyester was 20:30:50. The obtained humidity control wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
［比較例１］
高吸放湿性繊維と熱融着性繊維の混合比を２０：８０とし、最後に積層する表面シートを目付け１５ｇ／ｍ２のポリプロピレンフィルムとする以外は実施例１と同様に壁紙を作製した。得られた壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Comparative Example 1]
A wallpaper was prepared in the same manner as in Example 1 except that the mixing ratio of the highly moisture-absorbing / releasing fiber and the heat-fusible fiber was 20:80, and the final surface sheet was a polypropylene film having a basis weight of 15 g / m 2 . The obtained wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
［比較例２］
高吸放湿性繊維、熱融着性繊維およびレギュラーポリエステルの混合比を３０：５：６５とする以外は実施例３と同様に壁紙を作製した。得られた壁紙は目付け３００ｇ／ｍ２、厚さ０．８ｍｍ、見かけ密度０．３７５ｇ／ｃｍ３であった。
[Comparative Example 2]
A wallpaper was prepared in the same manner as in Example 3 except that the mixing ratio of the highly moisture-absorbing / releasing fiber, the heat-fusible fiber and the regular polyester was 30: 5: 65. The obtained wallpaper had a basis weight of 300 g / m 2 , a thickness of 0.8 mm, and an apparent density of 0.375 g / cm 3 .
次に本発明の調湿壁紙の吸放湿性能、収縮率および調湿性能の評価結果を表１に示す。なお、各性能の測定方法を以下に示す。 Next, Table 1 shows the evaluation results of the moisture absorption / release performance, shrinkage rate and humidity control performance of the humidity control wallpaper of the present invention. In addition, the measuring method of each performance is shown below.
（吸放湿性能および収縮率）
２００ｍｍ×２００ｍｍにカットした試料を２０℃×４０％ＲＨの環境下に一昼夜放置した後、２０℃×９５％ＲＨの環境下に移し、８時間吸湿させ、試料重量（Ｗ１）を測定する。次に試料を再度２０℃×４０％ＲＨの環境下に移し、３時間放湿させた後、試料重量（Ｗ２）およびタテ、ヨコの寸法（Ｌ２、Ｂ２）を測定する。最後に試料の絶乾質量（Ｗ０）を測定し、次式より１ｍ２あたりの吸湿量、放湿量、吸放湿量および収縮率を算出する。
(Moisture absorption / release performance and shrinkage)
The sample cut to 200 mm × 200 mm is left overnight in an environment of 20 ° C. × 40% RH, then transferred to an environment of 20 ° C. × 95% RH, absorbed for 8 hours, and the sample weight (W 1 ) is measured. Next, the sample is again transferred to an environment of 20 ° C. × 40% RH and allowed to dehumidify for 3 hours, and then the sample weight (W 2 ) and the vertical and horizontal dimensions (L 2 , B 2 ) are measured. Finally, the absolute dry mass (W 0 ) of the sample is measured, and the moisture absorption amount, moisture release amount, moisture absorption / release amount and shrinkage rate per 1 m 2 are calculated from the following equations.
吸湿量（ｇ／ｍ２）＝（Ｗ１−Ｗ０）／０．０４
放湿量（ｇ／ｍ２）＝（Ｗ２−Ｗ０）／０．０４
吸放湿量（ｇ／ｍ２）＝（吸湿量）−（放湿量）
収縮率（％）＝［４００−（Ｌ２＋Ｂ２）］／４００×１００
Moisture absorption (g / m 2 ) = (W 1 −W 0 ) /0.04
Moisture release (g / m 2 ) = (W 2 −W 0 ) /0.04
Moisture absorption / release (g / m 2 ) = (Moisture absorption) − (Moisture release)
Shrinkage rate (%) = [400− (L 2 + B 2 )] / 400 × 100
（調湿性能）
あらかじめ内壁面に４００ｍｍ×２００ｍｍの大きさにカットした試料を貼り付けた３００ｍｍ（縦）×５００ｍｍ（横）×３５０ｍｍ（高）の大きさの密閉容器を３０℃×５
０％ＲＨに調整した恒温恒湿槽内に蓋を開けたまま６時間放置する。その後、密閉容器中に湿度記録計を入れて容器を密閉し、６時間放置する。次いで、密閉容器の周辺温度を１０℃としてさらに６時間放置する。さらに、３０℃と１０℃を６時間ずつ繰り返し、密閉容器内の相対湿度の変化を測定する。周辺温度が１０℃の時の密閉容器内の相対湿度が７０％ＲＨ未満の場合を◎、７０％ＲＨ以上８０％ＲＨ未満の場合を○、８０％ＲＨ以上の場合を×と判断した。
(Humidity control performance)
A sealed container having a size of 300 mm (length) x 500 mm (width) x 350 mm (height), in which a sample cut in advance to a size of 400 mm x 200 mm is attached to the inner wall surface, is 30 ° C x 5
Leave in a constant temperature and humidity chamber adjusted to 0% RH for 6 hours with the lid open. Thereafter, a humidity recorder is put in the sealed container, the container is sealed, and left for 6 hours. Next, the ambient temperature of the sealed container is set to 10 ° C. and left for another 6 hours. Furthermore, 30 degreeC and 10 degreeC are repeated for 6 hours at a time, and the change of the relative humidity in an airtight container is measured. When the ambient temperature was 10 ° C., the case where the relative humidity in the sealed container was less than 70% RH was judged as ◎, the case where it was 70% RH or more and less than 80% RH was judged as ○, and the case where it was 80% RH or more was judged as ×.
実施例１から５は高い吸放湿性能を有し、優れた調湿性能を示した。さらに吸放湿による寸法安定性も良好であった。 Examples 1 to 5 had high moisture absorption / release performance and showed excellent humidity control performance. Furthermore, the dimensional stability due to moisture absorption and desorption was also good.
比較例１は寸法安定性は良好であったが、実施例５と同量の吸放湿性繊維を使用しているにもかかわらず、熱融着性繊維によりその効果が阻害されたため調湿性能に乏しかった。 Although Comparative Example 1 had good dimensional stability, humidity control performance was obtained because the effect was hindered by the heat-fusible fiber despite the use of the same amount of moisture-absorbing / releasing fibers as Example 5. It was scarce.
比較例２は調湿性能は高かったが、寸法安定性に乏しかった。 In Comparative Example 2, the humidity control performance was high, but the dimensional stability was poor.
この結果から、熱融着性繊維を適度な混率に調整することにより、吸放湿性繊維性能を阻害することなく、調湿性能に優れ、寸法安定性も良好な壁紙が得られることが判った。 From this result, it was found that by adjusting the heat-fusible fiber to an appropriate mixing ratio, it is possible to obtain a wallpaper having excellent moisture conditioning performance and good dimensional stability without impairing the hygroscopic fiber performance. .
本発明の調湿壁紙は特に室内の壁面に貼り付けて使用する。 The humidity control wallpaper of the present invention is used by being particularly attached to an indoor wall surface.
１調湿壁紙
２吸放湿層
３表面シート
４裏面シート
1 humidity control wallpaper 2 moisture absorption /
Claims (6)
Basis weight wallpaper humidity control according to any one of claims 1~5 50~700g / m 2, and a thickness of 0.3 to 3 mm.
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| JP2011062916A (en) * | 2009-09-17 | 2011-03-31 | Teijin Fibers Ltd | Multi-layer fiber structure for cold insulation, cold insulation sheet and fiber product |
| JP2019118899A (en) * | 2018-01-10 | 2019-07-22 | 帝人フロンティア株式会社 | Hygroscopic fiber structure |
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