JP4228268B2 - Humidity control wallpaper - Google Patents

Humidity control wallpaper Download PDF

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JP4228268B2
JP4228268B2 JP2002179171A JP2002179171A JP4228268B2 JP 4228268 B2 JP4228268 B2 JP 4228268B2 JP 2002179171 A JP2002179171 A JP 2002179171A JP 2002179171 A JP2002179171 A JP 2002179171A JP 4228268 B2 JP4228268 B2 JP 4228268B2
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Prior art keywords
moisture
wallpaper
layer
surface side
humidity control
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JP2003003381A (en
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倍章 山本
昭次 高橋
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株式会社ワンウイル
サンロック工業株式会社
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Description

【0001】
【発明の属する技術分野】
この発明は、湿気の吸収と吸収した湿気の放出を行う調湿性を有し結露防止やかび発生防止などの性能に優れると共に、室内の空気中に拡散されている有害物質を吸着・分解することが可能な壁紙に関するものである。
【0002】
【従来の技術】
周知のように、多雨多湿環境下における建築物の建築用材料としては、湿気の吸放出を行い結露防止作用を有する漆喰,土,木材などの天然の建築用材料が好適であるが、近年は主として経済性などの観点から、石油を原料とする建築用材料が多く活用されるようになってきている。
【0003】
しかしながら、石油を原料とする建築用材料は、上記した天然の建築用材料と比べ湿気の吸放出など調湿性の面で劣り結露防止作用が乏しいという問題がある。このため、最近は水分の吸放出性能を有した多孔質無機鉱物である珪藻土(二酸化ケイ素)を塗料層などに用いた建築用材料が注目されてきている。
【0004】
【発明が解決しようとする課題】
ところで、壁紙などの原反層に裏打ち紙を用い、この原反層に対して珪藻土を塗料層として塗布した場合には、塗料層は装飾性を有すると共に、湿気(水分)の吸収を行うことができるようになり、壁紙自体に湿気の吸収性を持たせることができる。
【0005】
その反面、壁紙を貼り付けた壁面などの建材面側にも裏打ち紙を通過して湿気が吸収されてしまうため、建材面側を腐食させたりカビを発生させたりするという問題が生ずる。
【0006】
また、石膏ボードなどの建材面側に湿気が吸収されると、建材面側がべたついた状態になると共に、室内などの湿度が低下すると建材面側の塵埃などが湿気の揮発に伴って裏打ち紙を通過して壁紙の表面側に浮き出てしまい、壁紙の表面側に汚れが発生するなどの問題がある。
【0007】
さらに、近年は室内の健康空間を確保するために、家具やフローリングなどの接着剤に含まれ空気中に拡散されているホルムアルデヒドなど有害な物質やガスなどの分解・除去を行う必要が指摘されてきている。
【0008】
本願の発明者は、そのような問題を解決すべく、特に、珪藻土を用いた壁紙において調湿性の向上を図ることにより、結露防止やカビ発生防止を図る共に、壁紙の耐久性の向上や空気中に拡散された有害物質の除去なども行うことができる壁紙につき鋭意研究を行った。
【0009】
この発明は、上記のような事情に鑑みてなされたものであり、その目的とするところは、湿気の吸収と吸収した湿気の放出を行う調湿性を有し、結露防止やかび発生防止などの性能に優れると共に、室内の空気中に拡散されているホルムアルデヒドなど有害な物質やガスなどを分解・除去することが可能な壁紙を提供することにある。
【0010】
【課題を解決するための手段】
この発明は、上記のような目的を違成するために、調湿性を有する壁紙として、請求項1記載のように、可撓性を有する裏打ち紙の裏面側に接着剤を塗布する壁紙であって、該裏打ち紙を通過する接着剤などの湿気の遮断を図るポリエチレン樹脂からなるポリコート層である遮湿層を該裏打ち紙の表面側に設けると共に、該遮湿層の表面側に室内側からの湿気の吸収と放出が可能なパルプ不織布である吸放湿層を積層し、且つ、該吸放湿層の表面側に粉末状の多孔質無機鉱物を主成分としつつ酸化チタンを顔料として含有する塗料層を設けてなることを特徴とする。また、請求項2記載のように、塗料層の主成分を形成する多孔質無機鉱物は、粉末状焼成珪藻土であることを特徴とする。
【0011】
【発明の実施の形態】
以下、この発明の実施例を図面に基づき詳細に説明する。図1は、この発明に係る壁紙の説明用断面図である。
【0012】
図1に示すように、壁紙は原反層1と原反層1の表面側に塗布される塗料層2とから構成される。原反層1は、可撓性を有するシート状の裏打ち紙1a、例えば「商品名:NN75HB(紀州製紙社製)」などが基材として用いられ、この裏打ち紙1aの表面側には、ポリエチレン樹脂からなるポリコート層であり裏打ち紙1aを通過しようとする湿気の遮断を図る遮湿層1bが設けられ、また、遮湿層1bの表面側に吸収と放出を図ると共に、柔軟性とボリューム化を図るパルプ不織布、例えば「商品名:JS60HD(Jソフト社製)」などよりなる吸放湿層1cを積層させて構成されている。
【0013】
原反層を形成するパルプ不織布の吸放湿層1cの表面側には、水分の吸放出性能を有した多孔質無機鉱物である粉末状焼成珪藻土を主成分とする塗料層2が設けられる。この塗料層2は、実施例にも示したように、粉末状焼成珪藻土と、EVA(エチレン酢酸ビニール共重合体),アクリル,発泡剤などの混合された水性樹脂、顔料(酸化チタン)、その他必要に応じて添加剤などの混合塗料材が用いられる。
【0014】
このように構成された壁紙によれば、壁紙の表面側(主として室内側)に滞留する湿気が塗料層2を通過してパルプ不織布よりなる吸放湿層1cに吸収される。パルプ不織布に吸収された湿気は、ポリコート層である遮湿層1bにおいて遮断されるので、裏打ち紙1aを通過することはなく、壁紙の貼り付けられた壁面などの下地建材を湿らすことはない。
【0015】
また、パルプ不織布に吸収された湿気は、壁紙の表面側の湿度が低下すると、塗料層2を通過して壁紙の表面側に放出されることとなるので、裏打ち紙1aへの湿気は遮断すると共に、湿気の吸放出を行う壁紙とされる。
【0016】
さらに、ポリコート層1bの遮湿性により、裏打ち紙1aに糊3を塗布した場合でも糊の水分などが裏打ち紙1aを通過して壁紙の表面側へと放出されることがなく揮発が抑制されるので、裏打ち紙1に対する糊の付け置き時間が従来よりも長時間確保できることとなり、長時間の施工可能時間が確保され施工効率の向上が図られる。また、このポリコート層1bにより壁紙の寸法安定性が図られ、ジョイント部の目開きなどの問題を軽減化することができる。
【0017】
また、パルプ不織布1cは、空気中の水分の吸放出を行うのみならず、壁紙製品として薄いながらもそれなりの柔軟性と厚みを確保可能とし、壁紙としての表現力を豊かとし、折り皺も付きにくく、リフォーム時などの下地凹凸もカバーしやすくなる。
【0018】
塗料層は多孔質無機鉱物を主成分としているので、装飾性を有すると共に、壁紙の表面側において湿気の吸収,保留,放出を行うことができ、且つ、室内の空気中に拡散されているホルムアルデヒドなど有害な物質やガスなどを吸着・分解することができる。
【0019】
さらに、塗料層2には顔料として酸化チタンが採用されているので、この酸化チタンが空気に触れると二酸化チタンとなり、光触媒の強力な酸化還元反応効果により、大気中の有害汚染物質を分解することに対し一定の効果を期待することができる。
【0020】
従来より、二酸化チタンと光触媒の関係においては次のように指摘されている。すなわち、光合成の場合には葉緑素を触媒とし光エネルギーを用いて水と二酸化炭素から酸素を作り出すのであるが、光触媒の場合には、二酸化チタン(TIO)などの光触媒半導体金属を触媒に、光エネルギー(紫外線)を用いて空気中の水(HO)と酸素(O)から活性酸素(O ),フリーラジカル(OH)マイナスイオンを作り出すと指摘されている。活性酸素は強い酸化力を有するので、汚れの原因となる有機化合物や細菌などの有害物質や悪臭なども分解・除去することが知られている。分解された汚れ等の物質は、雨などによって洗い流されるためセルフクリーニング効果ともいわれている。いずれにせよ、光触媒の酸化還元反応は大気中の有害汚染物質である窒素酸化物(NOx)や硫黄酸化物(SOx)を分解し、周辺の空気を浄化する作用をするため、高速道路の防音フェンスなど環境改善のために導入が図られている事例もある。
【0021】
また、この壁紙はパルプ材と珪藻土を主原料として形成されているので、火災時や廃棄焼却時などに有毒ガスやダイオキシンの発生もほとんどない。
【0022】
以下に、この発明に係る壁紙の原反層1と塗料層2の材料構成の好適な1例を示す。

Figure 0004228268
【0023】
上記の壁紙における加工方法は、原反層はTダイによるポリラミネート加工により、塗料層はコンマコーターによるコーティングによる。
この壁紙においては、塗料層とポリコート層及び不織布間においては湿気の吸収,保留,放出を行うが、原紙は湿気を帯びない。また、原紙に糊を塗布した場合、ポリコート層のない壁紙よりも大幅に糊の付け置き時間が延長化される。
【0024】
【発明の効果】
以上説明したように、この発明によれば、次のような効果を有する。
▲1▼ 塗料層は多孔質無機鉱物を主成分としているので、装飾性を有すると共に、壁紙の表面側において湿気の吸収,保留,放出を行うことができ、且つ、室内の空気中に拡散されているホルムアルデヒドなど有害な物質やガスなどを吸着・分解することができる。
▲2▼ 塗料層には顔料として酸化チタンが採用されているので、この酸化チタンが空気に触れると二酸化チタンとなり、光触媒の強力な酸化還元反応効果により、大気中の有害汚染物質を分解することができる。
▲3▼ 接着剤を塗布する裏打ち紙側と塗料層及びパルプ不織布との間には遮湿層が介在されているので、裏打ち紙側への湿気の通過は遮断するという調湿性を有し、居住空間の調湿作用を行いながらも石膏ボードなど下地側における結露防止やかび発生防止などを図ることができる。
▲4▼ 接着剤を塗布する裏打ち紙側と塗料層及びパルプ不織布との間には遮湿層が介在されているので、裏打ち紙側から壁紙の表面側への湿気の通過も遮断することとなり、裏打ち紙に塗布される接着剤が裏打ち紙を通過して壁紙の表面側へ揮発されることを防止し、大幅に糊の付け置き時間の延長化を図り、施工性の向上を図ることができる。また、建材面側の塵埃などが湿気の揮発に伴って裏打ち紙を通過して壁紙の表面側に浮き出ることを防止し、壁紙の表面側に汚れが発生するなどの事態を防止する。
▲5▼ 塗料層と遮湿層との間に介在されるパルプ不織布により、吸放湿機能の一層の向上が図られると共に、壁紙の寸法安定性が図られジョイント部の目開きなどを軽減化し、且つ、壁紙製品として薄いながらもそれなりの柔軟性と厚みを確保可能とし、折り皺も付きにくく、壁紙としての表現力を豊かとし、リフォーム時などの下地凹凸もカバーすることができる。
【図面の簡単な説明】
【図1】この発明に係る壁紙の説明用断面図である。
【図2】図1における湿気の流れを示す説明用断面図である。
【符号の説明】
1 原反層
1a 裏打ち紙
1b 遮湿層
1c 吸放湿層
2 塗料層[0001]
BACKGROUND OF THE INVENTION
This invention has a humidity control function that absorbs moisture and releases the absorbed moisture, has excellent performance such as prevention of condensation and generation of mold, and adsorbs and decomposes harmful substances diffused in indoor air. Is related to wallpaper.
[0002]
[Prior art]
As is well known, natural building materials such as stucco, earth, and wood that absorb and release moisture and have anti-condensation action are suitable as building materials in a wet and humid environment. From the viewpoint of economic efficiency and the like, many building materials using petroleum as a raw material have come to be used.
[0003]
However, there is a problem that building materials using petroleum as a raw material are inferior in terms of humidity control such as moisture absorption / release, compared with the above-described natural building materials, and have poor anti-condensation action. For this reason, recently, a building material using diatomaceous earth (silicon dioxide), which is a porous inorganic mineral having moisture absorption / release performance, for a paint layer or the like has attracted attention.
[0004]
[Problems to be solved by the invention]
By the way, when backing paper is used for the raw fabric layer such as wallpaper, and when diatomaceous earth is applied as a paint layer to the raw fabric layer, the paint layer has a decorative property and absorbs moisture (moisture). And the wallpaper itself can absorb moisture.
[0005]
On the other hand, since the moisture is absorbed through the backing paper also on the building material surface side such as the wall surface on which the wallpaper is pasted, there arises a problem that the building material surface side is corroded and mold is generated.
[0006]
In addition, when moisture is absorbed on the building material side such as gypsum board, the building material side becomes sticky, and when the humidity in the room decreases, the dust on the building material side will be rubbed with the volatilization of moisture. There is a problem that it passes through and rises to the surface side of the wallpaper, and dirt is generated on the surface side of the wallpaper.
[0007]
Furthermore, in recent years, it has been pointed out that it is necessary to decompose and remove harmful substances such as formaldehyde and gases contained in adhesives such as furniture and flooring and diffused in the air in order to secure a healthy indoor space. ing.
[0008]
In order to solve such a problem, the inventor of the present application aims to prevent condensation and prevent mold generation, particularly by improving the humidity control property in the wallpaper using diatomaceous earth, as well as improving the durability of the wallpaper and air. We conducted intensive research on wallpaper that can remove harmful substances diffused inside.
[0009]
The present invention has been made in view of the circumstances as described above, and the object of the invention is to have moisture conditioning that absorbs moisture and releases absorbed moisture, and prevents condensation and mold generation. The object is to provide a wallpaper that is excellent in performance and capable of decomposing and removing harmful substances such as formaldehyde and gas diffused in indoor air.
[0010]
[Means for Solving the Problems]
The present invention is a wallpaper in which an adhesive is applied to the back side of a flexible backing paper as claimed in claim 1 as a wallpaper having humidity control in order to defeat the purpose as described above. In addition, a moisture barrier layer, which is a polycoat layer made of a polyethylene resin that blocks moisture such as an adhesive passing through the backing paper, is provided on the surface side of the backing paper, and on the surface side of the moisture barrier layer from the indoor side. A moisture absorption / release layer that is a pulp nonwoven fabric capable of absorbing and releasing moisture is laminated, and the surface side of the moisture absorption / release layer contains powdered porous inorganic mineral as a main component and contains titanium oxide as a pigment. A paint layer is provided. According to a second aspect of the present invention, the porous inorganic mineral forming the main component of the paint layer is powdered baked diatomaceous earth.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view for explaining a wallpaper according to the present invention.
[0012]
As shown in FIG. 1, the wallpaper includes an original fabric layer 1 and a paint layer 2 applied to the surface side of the original fabric layer 1. The raw fabric layer 1 uses a flexible sheet-like backing paper 1a, for example, “trade name: NN75HB (manufactured by Kishu Paper Co., Ltd.)” as a base material, and on the surface side of the backing paper 1a, polyethylene A moisture barrier layer 1b which is a polycoat layer made of resin and which blocks moisture that is going to pass through the backing paper 1a is provided. Further, absorption and release are performed on the surface side of the moisture barrier layer 1b, and flexibility and volume are increased. And a moisture absorbing / releasing layer 1c made of a pulp non-woven fabric such as “trade name: JS60HD (manufactured by J Soft)”.
[0013]
On the surface side of the moisture absorbing / releasing layer 1c of the pulp nonwoven fabric forming the raw fabric layer, a coating layer 2 mainly composed of powdered baked diatomaceous earth, which is a porous inorganic mineral having moisture absorbing / releasing performance, is provided. As shown in the examples, the paint layer 2 is composed of powdered baked diatomaceous earth, an aqueous resin mixed with EVA (ethylene vinyl acetate copolymer), acrylic, foaming agent, pigment (titanium oxide), and others. A mixed paint material such as an additive is used as necessary.
[0014]
According to the wallpaper configured in this manner, moisture staying on the surface side (mainly indoor side) of the wallpaper passes through the paint layer 2 and is absorbed by the moisture absorption / release layer 1c made of pulp nonwoven fabric. Moisture absorbed by the pulp nonwoven fabric is blocked in the moisture barrier layer 1b, which is a polycoat layer, and therefore does not pass through the backing paper 1a and does not wet the underlying building material such as the wall on which the wallpaper is attached. .
[0015]
Further, the moisture absorbed by the pulp nonwoven fabric passes through the coating layer 2 and is released to the surface side of the wallpaper when the humidity on the surface side of the wallpaper is lowered, so that the moisture on the backing paper 1a is blocked. At the same time, it is a wallpaper that absorbs and releases moisture.
[0016]
Furthermore, due to the moisture barrier property of the polycoat layer 1b, even when the glue 3 is applied to the backing paper 1a, the moisture of the glue does not pass through the backing paper 1a and is released to the surface side of the wallpaper, thereby suppressing volatilization. Therefore, it is possible to secure a longer time for the glue to be placed on the backing paper 1 than before, so that a long workable time is secured and the construction efficiency is improved. Further, the dimensional stability of the wallpaper is achieved by the polycoat layer 1b, and problems such as opening of joints can be reduced.
[0017]
In addition, the pulp nonwoven fabric 1c not only absorbs and releases moisture in the air, but it can also ensure a certain level of flexibility and thickness while being thin as a wallpaper product. It is difficult to cover the surface unevenness during renovation.
[0018]
Since the paint layer is mainly composed of a porous inorganic mineral, it has a decorative property and can absorb, hold and release moisture on the surface side of the wallpaper, and is diffused into the indoor air. It can adsorb and decompose harmful substances and gases.
[0019]
Furthermore, since titanium oxide is used as a pigment in the paint layer 2, when this titanium oxide comes into contact with the air, it becomes titanium dioxide and decomposes harmful pollutants in the atmosphere due to the strong redox reaction effect of the photocatalyst. A certain effect can be expected.
[0020]
Conventionally, the relationship between titanium dioxide and photocatalyst has been pointed out as follows. That is, in the case of photosynthesis, chlorophyll is used as a catalyst to produce oxygen from water and carbon dioxide using light energy. In the case of a photocatalyst, photocatalytic semiconductor metal such as titanium dioxide (TIO 2 ) is used as a catalyst. It is pointed out that active oxygen (O 2 ) and free radical (OH ) negative ions are produced from water (H 2 O) and oxygen (O 2 ) in the air using energy (ultraviolet rays). Since active oxygen has a strong oxidizing power, it is known to decompose and remove organic compounds that cause dirt, harmful substances such as bacteria, and bad odors. Since the decomposed substances such as dirt are washed away by rain or the like, it is also called a self-cleaning effect. In any case, the oxidation-reduction reaction of the photocatalyst decomposes nitrogen oxides (NOx) and sulfur oxides (SOx), which are harmful pollutants in the atmosphere, and purifies the surrounding air. In some cases, such as fences have been introduced to improve the environment.
[0021]
In addition, since this wallpaper is mainly made of pulp and diatomaceous earth, there is almost no generation of toxic gas or dioxin during a fire or waste incineration.
[0022]
Below, the suitable one example of the material structure of the raw fabric layer 1 and the coating layer 2 of the wallpaper based on this invention is shown.
Figure 0004228268
[0023]
In the above-described processing method for wallpaper, the raw fabric layer is formed by polylaminate processing using a T-die, and the paint layer is coated by a comma coater.
In this wallpaper, moisture is absorbed, retained, and released between the paint layer, the polycoat layer, and the nonwoven fabric, but the base paper is not damp. In addition, when paste is applied to the base paper, the paste setting time is greatly extended as compared to wallpaper without a polycoat layer.
[0024]
【The invention's effect】
As described above, the present invention has the following effects.
(1) Since the paint layer is mainly composed of porous inorganic minerals, it has a decorative property and can absorb, hold and release moisture on the surface side of the wallpaper, and is diffused into the indoor air. It can adsorb and decompose harmful substances such as formaldehyde and gases.
(2) Titanium oxide is used as a pigment in the paint layer. When this titanium oxide comes into contact with the air, it becomes titanium dioxide and decomposes harmful pollutants in the atmosphere due to the strong redox reaction effect of the photocatalyst. Can do.
(3) Since a moisture barrier layer is interposed between the backing paper side to which the adhesive is applied and the paint layer and the pulp nonwoven fabric, it has a humidity control property of blocking the passage of moisture to the backing paper side, While controlling the humidity in the living space, it is possible to prevent condensation on the ground side such as a gypsum board and prevent mold generation.
(4) Since a moisture barrier layer is interposed between the backing paper side where the adhesive is applied and the paint layer and pulp nonwoven fabric, the passage of moisture from the backing paper side to the surface side of the wallpaper will also be blocked. This prevents adhesive applied to the backing paper from passing through the backing paper and volatilizing to the surface of the wallpaper, greatly extending the time for placing glue and improving workability. it can. Further, the dust on the building material side is prevented from passing through the backing paper and rising to the surface side of the wallpaper due to the volatilization of moisture, and the situation such as the occurrence of dirt on the surface side of the wallpaper is prevented.
(5) The pulp non-woven fabric interposed between the paint layer and the moisture barrier layer further improves the moisture absorption and release function, and also improves the dimensional stability of the wallpaper and reduces the joint opening. In addition, although it is thin as a wallpaper product, it is possible to ensure a certain degree of flexibility and thickness, it is difficult to crease, enhances the expressive power as wallpaper, and can cover the uneven surface of the base during renovation.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view for explaining a wallpaper according to the present invention.
2 is a cross-sectional view for explaining the flow of moisture in FIG. 1. FIG.
[Explanation of symbols]
1 Original fabric layer 1a Lined paper
1b Moisture barrier
1c Hygroscopic layer 2 Paint layer

Claims (2)

可撓性を有する裏打ち紙の裏面側に接着剤を塗布する壁紙であって、該裏打ち紙を通過する接着剤などの湿気の遮断を図るポリエチレン樹脂からなるポリコート層である遮湿層を該裏打ち紙の表面側に設けると共に、該遮湿層の表面側に室内側からの湿気の吸収と放出が可能なパルプ不織布である吸放湿層を積層し、且つ、該吸放湿層の表面側に粉末状の多孔質無機鉱物を主成分としつつ酸化チタンを顔料として含有する塗料層を設けてなることを特徴とする調湿性を有する壁紙。A wallpaper for applying adhesive on the back side of the backing sheet having flexibility, said backing a barrier stratification is polycoat layer made of a polyethylene resin to achieve blocking of moisture, such as an adhesive that passes through said backing sheet A moisture absorbing / releasing layer which is a pulp nonwoven fabric capable of absorbing and releasing moisture from the indoor side is laminated on the surface side of the moisture barrier layer, and provided on the surface side of the paper, and the surface side of the moisture absorbing / releasing layer A wallpaper having humidity control, characterized in that a coating layer containing titanium oxide as a pigment is provided with a powdery porous inorganic mineral as a main component. 塗料層の主成分を形成する多孔質無機鉱物は、粉末状焼成珪藻土であることを特徴とする請求項1記載の調湿性を有する壁紙。  The wallpaper having humidity control properties according to claim 1, wherein the porous inorganic mineral forming the main component of the paint layer is powdered baked diatomaceous earth.
JP2002179171A 2002-05-17 2002-05-17 Humidity control wallpaper Expired - Lifetime JP4228268B2 (en)

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