JP2002096433A - Wall paper - Google Patents
Wall paperInfo
- Publication number
- JP2002096433A JP2002096433A JP2000288208A JP2000288208A JP2002096433A JP 2002096433 A JP2002096433 A JP 2002096433A JP 2000288208 A JP2000288208 A JP 2000288208A JP 2000288208 A JP2000288208 A JP 2000288208A JP 2002096433 A JP2002096433 A JP 2002096433A
- Authority
- JP
- Japan
- Prior art keywords
- vinyl acetate
- layer
- resin
- ethylene
- wallpaper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、住宅等の壁面や天
井面等に貼着する内装用の化粧シートに関し、特に、環
境に優しく、かつ、耐積圧性に優れた壁紙に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative sheet for interior to be attached to a wall surface or a ceiling surface of a house or the like, and more particularly to a wallpaper which is environmentally friendly and excellent in pressure resistance.
【０００２】[0002]
【従来の技術】壁紙等の建築内装材としては、火災に対
する安全性の面から、難燃性が要求され、建築基準法で
一定の難燃性が義務づけられている場合が多い。また、
建築内装材には、室内の居住空間としての快適性を高め
る為に高い意匠性が求められ、特に立体的な意匠を持た
せる為には、柔軟性のみでなく高度に発泡させ得る材料
が有利となる。この様な要求に応え得る材料として、従
来、塩化ビニル樹脂を用いたものが広く用いられてき
た。しかし、塩化ビニル樹脂等のハロゲンを含む樹脂組
成物は火災時や焼却時に有害なガスを発生するという欠
点を有している。2. Description of the Related Art Fireproofing is required for building interior materials such as wallpaper from the viewpoint of fire safety, and a certain level of fireproofing is required by the Building Standards Law in many cases. Also,
Architectural interior materials are required to have high design properties in order to enhance the comfort as a living space in the room. Particularly, in order to have a three-dimensional design, materials that can not only be flexible but also highly foamable are advantageous. Becomes As a material that can meet such demands, a material using a vinyl chloride resin has been widely used. However, resin compositions containing halogens, such as vinyl chloride resins, have the drawback of generating harmful gases during fires and incineration.
【０００３】そのため、ハロゲンを含まない樹脂からな
る建築内装材が開発されており、その場合には、樹脂自
体が難燃性でないため難燃性を付与する必要があり、燃
焼時に有毒なガスの発生がなく、低煙性で無公害型の難
燃剤として、水酸化アルミニウムや水酸化マグネシウム
等の金属水酸化物が一般に用いられている。しかしなが
ら、これら金属水酸化物は難燃性を高めるためには、多
量に添加の必要があり、このため、高充填になると後工
程での樹脂発泡時に、ガス抜けなど樹脂本来の発泡特性
が損なわれ、発泡倍率の小さいボリューム感の少ないも
のになったり、樹脂層の製膜、混練時に樹脂と金属水酸
化物等の無機質成分の摩擦が増大し、発熱し混練時に発
泡してきれいな製膜が出来なく、良好な表面状態のシー
トが得られない等生産工程の安定性に問題があった。[0003] For this reason, building interior materials made of a resin containing no halogen have been developed. In such a case, the resin itself is not flame-retardant, so that it is necessary to impart flame-retardant properties. Metal hydroxides such as aluminum hydroxide and magnesium hydroxide are generally used as low-smoke, non-polluting flame retardants that do not generate. However, these metal hydroxides need to be added in a large amount in order to increase the flame retardancy. Therefore, when the metal hydroxide is highly filled, the original foaming properties of the resin such as outgassing are impaired during foaming of the resin in a later step. The foaming ratio is small and the volume feeling is small, and the friction between the resin and inorganic components such as metal hydroxide increases during film formation and kneading of the resin layer. There was a problem in the stability of the production process, for example, a sheet having a good surface condition could not be obtained.
【０００４】また、生産工程の安定性を得るため、融点
の低い樹脂を用いた場合、製膜時の発泡はなく良好な表
面状態のシートが得られ、後工程での発泡においても発
泡倍率等については問題なくボリューム感のあるものが
得られるが、最終製品での発泡体の耐積圧性が弱く、発
泡体が潰れやすいという問題があった。When a resin having a low melting point is used to obtain the stability of the production process, a sheet having a good surface state is obtained without foaming at the time of film formation. With respect to (1), a product having a voluminous feeling can be obtained without any problem, but there is a problem that the foaming resistance of the final product is weak and the foam is easily crushed.
【０００５】[0005]
【発明が解決しようとする課題】そこで本発明は、上記
問題点に鑑みてなされたものであり、その目的とすると
ころは、火災時や燃焼時に有毒なガスを発生することも
なく、ボリュウム感があると共に風合いがよく、バラツ
キの少ないほぼ一様な発泡セル形状の発泡樹脂層を有
し、かつ、耐積圧性に優れた壁紙を提供することであ
る。SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and has as its object to generate no toxic gas at the time of fire or combustion and to reduce the volume level. Another object of the present invention is to provide a wallpaper having a foam resin layer having a substantially uniform foam cell shape with a good texture, a small variation, and an excellent resistance to accumulation pressure.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するため
の本発明の解決手段は、基材層上に、発泡剤、無機質成
分、難燃剤を含むエチレン−酢酸ビニル共重合体樹脂か
らなる発泡樹脂層と装飾層が順次設けられた化粧シート
において、前記エチレン−酢酸ビニル共重合体樹脂が、
酢酸ビニル含有量が２０％以上２２％以下であり、メル
トフローレートが４５ｇ／１０分以上８０ｇ／１０分以
下であることを特徴とするものである。このような構成
とすることにより、発泡樹脂層の耐積圧性、耐カール
性、難燃性が向上し、溶融温度が低く、製膜性に優れる
ことから、加工性が向上し安価な壁紙とすることがで
き、人間や環境に優しいボリュウム感があると共に風合
いがよく意匠性に優れた壁紙を得ることができる。Means for Solving the Problems To achieve the above object, the present invention provides a method of forming a foam comprising an ethylene-vinyl acetate copolymer resin containing a foaming agent, an inorganic component and a flame retardant on a substrate layer. In a decorative sheet in which a resin layer and a decorative layer are sequentially provided, the ethylene-vinyl acetate copolymer resin includes:
The vinyl acetate content is 20% or more and 22% or less, and the melt flow rate is 45 g / 10 minutes or more and 80 g / 10 minutes or less. By adopting such a configuration, the pressure resistance of the foamed resin layer, the curl resistance, the flame retardancy are improved, the melting temperature is low, and the film forming property is excellent, so that the processability is improved and the wallpaper is inexpensive. It is possible to obtain a wallpaper which has a feeling of volume which is kind to humans and the environment and which has a good texture and excellent design.
【０００７】また、前記エチレン−酢酸ビニル共重合体
樹脂１００重量部に対して無機質成分を５０〜８０重量
部添加してなることを特徴とするものである。このよう
にすることにより、難燃性を保持するとともに、混練押
出し中に発泡することなく、非発泡状態で製膜できるの
で、装飾層の付与が容易であり、意匠性に優れた壁紙を
得ることができる。Further, the present invention is characterized in that 50 to 80 parts by weight of an inorganic component is added to 100 parts by weight of the ethylene-vinyl acetate copolymer resin. By doing so, it is possible to form a film in a non-foamed state without foaming during kneading and extrusion while maintaining flame retardancy, so that it is easy to apply a decorative layer and obtain a wallpaper having excellent design properties. be able to.
【０００８】また、前記難燃剤がシリコーン系難燃剤か
らなることを特徴とするものである。このようにするこ
とにより、少量の添加で有効な難燃性を得ることができ
ると共に樹脂溶融時の溶融張力が安定し発泡セルが緻密
となるため、ボリュウム感のある壁紙となるものであ
る。Further, the flame retardant comprises a silicone flame retardant. By doing so, effective flame retardancy can be obtained with a small amount of addition, and the melt tension at the time of melting the resin is stabilized, so that the foamed cells become dense, so that the wallpaper has a sense of volume.
【０００９】そして、前記基材層上の最も外側の層から
前記発泡樹脂層にかけて凹凸模様が施されていることを
特徴とするものである。このようにすることで様々な形
状の凹凸模様を有する壁紙を得ることができる。[0009] Further, an uneven pattern is formed from the outermost layer on the base material layer to the foamed resin layer. By doing so, it is possible to obtain wallpaper having uneven patterns of various shapes.
【００１０】[0010]
【発明の実施の形態】以下、本発明の具体的な実施形態
を図面を参照しながら説明する。図１は本発明の化粧シ
ートの実施形態の層構成図であり、１は壁紙、２は基材
層、３は発泡樹脂層、４は装飾層、５は凹凸模様をそれ
ぞれ表している。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a layer configuration diagram of an embodiment of a decorative sheet of the present invention, wherein 1 is a wallpaper, 2 is a base material layer, 3 is a foamed resin layer, 4 is a decorative layer, and 5 is an uneven pattern.
【００１１】図１は本発明の壁紙１の実施形態の層構成
図を示したものであり、本発明の壁紙１は、基材層２上
に、Ｔダイ押出機で発泡剤、無機質成分、シリコーン系
難燃剤を含む、酢酸ビニルの添加量が２０％以上２２％
以下でメルトフローレート（以後、ＭＦＲと記載する）
が４５ｇ／１０分以上８０ｇ／１０分以下のエチレン−
酢酸ビニル共重合体樹脂を加熱溶融押出しとすることに
より未発泡樹脂層を形成し、該未発泡樹脂層上に装飾層
４を設けたあと、加熱発泡させた発泡樹脂層３からな
り、前記装飾層４側から前記発泡樹脂層３にかけて凹凸
模様５を施したものである。そして、エチレン−酢酸ビ
ニル共重合体樹脂１００重量部に対して無機質成分を５
０〜８０重量部添加した樹脂層とすることで、難燃性を
有し、溶融押出し時の製膜性が良好で発泡することがな
いので、耐積圧性、耐カール性に優れたボリュウム感の
有る壁紙とすることができる。FIG. 1 shows a layer configuration diagram of an embodiment of a wallpaper 1 of the present invention. The wallpaper 1 of the present invention has a foaming agent, inorganic components, 20% to 22% vinyl acetate, including silicone flame retardant
Melt flow rate (hereinafter referred to as MFR)
Ethylene of 45 g / 10 min or more and 80 g / 10 min or less
An unfoamed resin layer is formed by heat-melting and extruding a vinyl acetate copolymer resin, a decorative layer 4 is provided on the unfoamed resin layer, and then the foamed resin layer 3 is heated and foamed. The uneven pattern 5 is provided from the layer 4 side to the foamed resin layer 3. Then, 5 parts of the inorganic component was added to 100 parts by weight of the ethylene-vinyl acetate copolymer resin.
Since the resin layer to which 0 to 80 parts by weight is added has flame retardancy, has good film forming property at the time of melt extrusion and does not foam, a volume feeling excellent in accumulation pressure resistance and curling resistance is excellent. Wallpaper.
【００１２】次に、本発明の壁紙１について更に詳しく
説明する。本発明に用いる基材層２としては、紙、難燃
紙、不燃紙、有機繊維又は無機繊維の織布、不織布が用
いられるが、加熱発泡させることを考慮してセルロース
やポリエステル等の耐熱性のある素材が好ましい。ま
た、施工後の火災等による燃焼を考慮して、スルファニ
ル酸グアナジンや燐酸グアナジンなどの水溶性難燃剤を
含浸させたパルプ主体の難燃紙、あるいは、炭酸カルシ
ウム、水酸化アルミニウム、水酸化マグネシウムなどの
無機質材を混抄した無機質紙などの通常壁紙用裏打紙と
いわれているものを用いることができ、その坪量として
は３０〜１２０ｇ／ｍ2 が好ましい。Next, the wallpaper 1 of the present invention will be described in more detail. As the base layer 2 used in the present invention, paper, flame-retardant paper, non-combustible paper, woven or non-woven fabric of organic fibers or inorganic fibers is used. Materials with texture are preferred. In addition, in consideration of burning due to fire after construction, pulp-based flame-retardant paper impregnated with a water-soluble flame retardant such as guanazine sulfanilate or guanazine phosphate, or calcium carbonate, aluminum hydroxide, magnesium hydroxide, etc. What is commonly referred to as backing paper for wallpaper, such as inorganic paper mixed with an inorganic material, can be used, and its basis weight is preferably 30 to 120 g / m 2 .
【００１３】次に、発泡樹脂層３について説明する。本
発明の壁紙１の発泡樹脂層３を形成する樹脂に用いる非
ハロゲン系熱可塑性樹脂としては、エチレン−酢酸ビニ
ル共重合体が好適である。エチレン−酢酸ビニル共重合
体は、酢酸ビニル含有量により酸素指数が異なり、酢酸
ビニル含有量が多い程、酸素指数が高く、燃焼熱が小さ
くなるので難燃性の点で好ましく、酢酸ビニルの含有量
としては２０％以上２２％以下のものが好ましい。酢酸
ビニルの含有量が２０％以下では基材層２との積層後に
積層体の反りが大きくなり、壁紙として施工する際に不
具合となると共に難燃性も劣ってくる。また、２２％以
上では、発泡後の耐積圧性が弱くなり、発泡体が潰れ易
く好ましくない。Next, the foamed resin layer 3 will be described. As the non-halogen thermoplastic resin used for the resin forming the foamed resin layer 3 of the wallpaper 1 of the present invention, an ethylene-vinyl acetate copolymer is preferable. The ethylene-vinyl acetate copolymer has a different oxygen index depending on the vinyl acetate content, and the higher the vinyl acetate content, the higher the oxygen index and the smaller the heat of combustion. The amount is preferably from 20% to 22%. When the content of vinyl acetate is 20% or less, the warpage of the laminate becomes large after lamination with the base material layer 2, which becomes a problem when applied as wallpaper and has poor flame retardancy. On the other hand, if the content is 22% or more, the pressure resistance after foaming becomes weak, and the foam is easily crushed, which is not preferable.
【００１４】また、流動特性を表すＭＦＲ値が４５ｇ／
１０分以上８０ｇ／１０分以下のものが、エチレン−酢
酸ビニル共重合体樹脂１００重量部に対して無機質成分
を５０〜８０重量部含有させてもＴダイ押出機で混練、
押出し製膜中に発泡することなく非発泡状態で製膜で
き、生産工程も安定し好ましいものである。ＭＦＲ値が
４５ｇ／１０分以下では、加工中の流動性が低いために
加工性が悪く製膜中に摩擦が増大し、発熱し混練時に発
泡してきれいな製膜が出来なく、良好な表面状態の壁紙
が得られない。また、エチレン−酢酸ビニル共重合体樹
脂が硬くなり、発泡樹脂層となった状態でも折り曲げる
と割れやすい。また、８０ｇ／１０分以上では軟化しす
ぎて表面のベタ付きが大きくなり加工が困難になると共
に、発泡後の発泡体の耐積圧性が劣る。The MFR value representing the flow characteristics is 45 g /
What is 10 minutes or more and 80 g / 10 minutes or less can be kneaded with a T-die extruder even if the inorganic component is contained in an amount of 50 to 80 parts by weight based on 100 parts by weight of the ethylene-vinyl acetate copolymer resin.
The film can be formed in a non-foamed state without foaming during extrusion film formation, and the production process is stable and preferable. When the MFR value is 45 g / 10 min or less, the flowability during processing is low, so the workability is poor, friction increases during film formation, heat is generated and foaming occurs during kneading, and a clean film cannot be formed, and a good surface state is obtained. Can not get the wallpaper. In addition, the ethylene-vinyl acetate copolymer resin becomes hard and easily breaks when bent even in a state of a foamed resin layer. On the other hand, if it is 80 g / 10 min or more, the material becomes too soft and the surface becomes sticky, making it difficult to process, and the foaming resistance after foaming is inferior.
【００１５】次に、発泡樹脂層３に用いる発泡剤として
は、低沸点の炭化水素を内包した熱膨張型カプセル発泡
剤を用いることができるが、低コストであるとともに、
分解熱量が小さく、難燃性かつ自己消化性に優れ、水に
安定で、無毒であり、前記発泡樹脂層３に難燃性を付与
することができる点等からアゾジカルボンアミド、アゾ
ビスホルムアミド等のアゾ系化合物の熱分解型発泡剤が
好適である。アゾジカルボンアミドは分解温度が高く、
発泡促進剤の併用により分解温度を下げることも出来る
ため好ましい。発泡促進剤としては無機塩系、金属石鹸
系、酸類が用いられる。発泡剤の添加量は、要求される
意匠性により適宜決めればよいが、概ね発泡樹脂層３を
形成するエチレン−酢酸ビニル共重合体１００重量部に
対して２〜１０重量部が適当である。Next, as a foaming agent used for the foamed resin layer 3, a heat-expansion type capsule foaming agent containing a hydrocarbon having a low boiling point can be used.
Azodicarbonamide, azobisformamide, etc., because they have a small heat of decomposition, are excellent in flame retardancy and self-extinguishing properties, are stable in water, are non-toxic, and can impart flame retardancy to the foamed resin layer 3. The thermal decomposition type foaming agent of the azo compound is suitable. Azodicarbonamide has a high decomposition temperature,
The combined use of a foaming accelerator is preferable because the decomposition temperature can be lowered. As the foaming accelerator, inorganic salt-based, metal soap-based, and acids are used. The amount of the foaming agent to be added may be appropriately determined depending on the required design properties, but it is generally appropriate to use 2 to 10 parts by weight based on 100 parts by weight of the ethylene-vinyl acetate copolymer forming the foamed resin layer 3.
【００１６】次に、本発明の発泡樹脂層３に用いる難燃
剤としては、シリコーン系、リン酸系、無機系金属水酸
化物等が考えられ、環境に優しく、難燃剤を添加するこ
とにより少量で有効的に難燃性を付与することができる
ものが好ましく、シリコーン系難燃剤が極めて有効であ
る、特に高分子量のシリコーン系難燃剤を用いると樹脂
溶融時（樹脂発泡時）の溶融張力が安定し発泡セルが緻
密となり好ましいものであり、具体的には、ポリジメチ
ルシロキサン単体、ないし、エポキシ基あるいはメタク
リレート基を有するポリジメチルシロキサン誘導体と二
酸化珪素との混合物が好ましい。また、シリコーン系難
燃剤を１００％用いることにより、難燃層を形成する樹
脂１００重量部に対して３０重量部で十分に難燃性を付
与することができるが、シリコーン系難燃剤は高価であ
るために、シリコーン系難燃剤を１００％用いることは
できず、他の環境に優しい難燃剤と併用せざるを得な
い。このシリコーン系難燃剤と併用する難燃剤として
は、無機系難燃剤、具体的にはマイカ、水酸化アルミニ
ウム、水酸化マグネシウム、炭酸カルシウム等の無機物
の１種ないし２種以上の混合物からなるものを併用する
のが上記理由から適当である。Next, as the flame retardant used for the foamed resin layer 3 of the present invention, a silicone-based, phosphoric-acid-based, inorganic metal hydroxide and the like can be considered. In particular, a silicone flame retardant is extremely effective. Particularly, when a high molecular weight silicone flame retardant is used, the melt tension at the time of resin melting (resin foaming) is reduced. It is preferable because the cell is stable and the foam cell becomes dense, and specifically, a polydimethylsiloxane alone or a mixture of a polydimethylsiloxane derivative having an epoxy group or a methacrylate group and silicon dioxide is preferable. Further, by using 100% of the silicone-based flame retardant, sufficient flame retardancy can be imparted at 30 parts by weight with respect to 100 parts by weight of the resin forming the flame-retardant layer, but the silicone-based flame retardant is expensive. For this reason, 100% of the silicone-based flame retardant cannot be used, and it must be used in combination with another environmentally friendly flame retardant. Examples of the flame retardant used in combination with the silicone flame retardant include inorganic flame retardants, specifically, those composed of a mixture of one or more inorganic substances such as mica, aluminum hydroxide, magnesium hydroxide, and calcium carbonate. It is appropriate to use them together for the above reason.
【００１７】次に、無機質成分としては、水酸化アルミ
ニウム、水酸化マグネシウム、炭酸カルシウム等の無機
物が難燃剤、充填材として使用でき、また、二酸化チタ
ン、酸化鉄等の無機顔料等が着色剤として用いられ、特
に、本発明において黄、灰、白などの薄い色を鮮明にだ
す場合、二酸化チタン顔料が有効である。二酸化チタン
顔料の添加量としては、エチレン−酢酸ビニル共重合体
樹脂１００重量部に対して１０〜２０重量部が好まし
い。これら、無機質成分は樹脂層の難燃性、製膜性、意
匠性に関係し、添加量としては樹脂１００重量部に対し
て、５０〜８０重量部が好ましく、８０重量部以上では
製膜時発泡の不具合、５０重量部以下では難燃性が悪く
なる。Next, as the inorganic component, inorganic substances such as aluminum hydroxide, magnesium hydroxide, and calcium carbonate can be used as a flame retardant and a filler, and inorganic pigments such as titanium dioxide and iron oxide can be used as a coloring agent. Titanium dioxide pigments are effective when they are used, and in the present invention, in particular, when thin colors such as yellow, gray, and white are brought out clearly. The amount of the titanium dioxide pigment to be added is preferably 10 to 20 parts by weight based on 100 parts by weight of the ethylene-vinyl acetate copolymer resin. These inorganic components are related to the flame retardancy, film-forming property, and design of the resin layer. The amount of the inorganic component is preferably 50 to 80 parts by weight with respect to 100 parts by weight of the resin. Insufficiency in foaming, and when the amount is 50 parts by weight or less, the flame retardancy deteriorates.
【００１８】次に、本発明の装飾層４は、一般的にはグ
ラビア印刷、オフセット印刷、シルクスクリーン印刷等
周知の印刷法によりインキにて形成することができる。
印刷絵柄としては、木目柄、石目柄、布目柄、皮紋柄、
幾何学図形、文字、記号、あるいは、全面ベタ等の印刷
絵柄がある。インキとしては、ビヒクルとして、ポリエ
ステル系樹脂、イソシアネートとポリオールからなるポ
リウレタン系樹脂、アクリル系樹脂、酢酸ビニル樹脂、
セルロース系樹脂、ポリアミド系樹脂等を１種ないし２
種以上混合して用い、これに顔料、溶剤、各種補助剤等
を加えてインキ化したものを用いることができる。Next, the decorative layer 4 of the present invention can be generally formed of ink by a known printing method such as gravure printing, offset printing, silk screen printing and the like.
Printed patterns include wood pattern, stone pattern, cloth pattern, leather pattern,
There are printed patterns such as geometric figures, characters, symbols, and solid images. As the ink, as a vehicle, a polyester resin, a polyurethane resin composed of isocyanate and polyol, an acrylic resin, a vinyl acetate resin,
Cellulosic resin, polyamide resin, etc.
It is also possible to use a mixture obtained by mixing a plurality of kinds or more, and adding a pigment, a solvent, various auxiliaries and the like to the ink.
【００１９】また、壁紙１の凹凸模様５面を希望する艶
に調整を行うため、装飾層４として艶調節層を設けても
良い。艶調節の方法はシリカ等のマット剤を混練したイ
ンキを表面に塗布する方法が主に用いられる。用いられ
るインキのバインダーとしては、アクリル系樹脂、ポリ
ウレタン系樹脂、ポリエステル系樹脂、エポキシ樹脂、
また、これらの共重合体樹脂の透明または半透明な樹脂
が使用される。Further, a gloss adjusting layer may be provided as the decorative layer 4 in order to adjust the five uneven patterns of the wallpaper 1 to a desired gloss. As a method of adjusting the gloss, a method of applying an ink obtained by kneading a matting agent such as silica to the surface is mainly used. As a binder of the ink used, acrylic resin, polyurethane resin, polyester resin, epoxy resin,
In addition, a transparent or translucent resin of these copolymer resins is used.
【００２０】また、凹凸模様５の形成は、周知の枚葉、
あるいは、輪転式のエンボス機を用いて積層体が加熱さ
れた状態にあるときに、基材層２上の最も外側の層から
エンボス版で凹凸を施して後に冷却することにより、前
記装飾層４から前記発泡樹脂層３にかけて形成したもの
である。この凹凸模様５の形状としては、木目板導管
溝、石板表面凹凸、布表面テクスチュア、梨地、砂目、
ヘアライン、万線条溝等がある。The formation of the uneven pattern 5 can be performed by using a well-known sheet
Alternatively, when the laminate is in a heated state using a rotary embossing machine, the decorative layer 4 is formed by applying irregularities to the outermost layer on the base material layer 2 with an embossing plate and then cooling the embossed plate. To the foamed resin layer 3. As the shape of the uneven pattern 5, a wood grain board conduit groove, a stone board surface unevenness, a cloth surface texture, a satin finish, a grain,
There are hairline, line and groove.
【００２１】次に、本発明の壁紙の製造方法について、
上記した実施形態の壁紙１を例に挙げて説明する。ま
ず、裏打紙からなる基材層２上に、発泡剤、シリコーン
系難燃剤、二酸化チタンおよび無機充填材からなる無機
質成分５０〜８０重量部を含む、酢酸ビニル含有量が２
０％以上２２％以下で、ＭＦＲが４５ｇ／１０分以上８
０ｇ／１０分以下のエチレン−酢酸ビニル共重合体樹脂
からなる混合樹脂物を加熱溶融押出しして積層体を作製
し、該積層体の表出する未発泡樹脂層面にコロナ放電処
理を施すと共に、該コロナ放電処理を施した面にグラビ
ア印刷にて絵柄印刷等の装飾層４を形成して後に、この
ものを加熱発泡炉で前記未発泡樹脂層を発泡させて発泡
樹脂層３となすと共に、前記装飾層４側から前記発泡樹
脂層３にかけて、エンボス版にて凹凸模様５を形成後、
冷却することにより、壁紙１を得ることができる。この
ように酢酸ビニル含有量が２０％以上２２％以下で、Ｍ
ＦＲが４５ｇ／１０分以上８０ｇ／１０分以下のエチレ
ン−酢酸ビニル共重合体樹脂を用いることで、Ｔダイに
よる加熱溶融押出し加工工程で発泡剤が分解発泡するこ
となく、基材層２面上に積層できるので、装飾層４も鮮
明に形成することができ、また、加熱発泡する事により
ボリュウム感があると共に耐積圧性に優れ、カールの発
生がみられない壁紙１が得られる。Next, regarding the method for producing wallpaper of the present invention,
The wallpaper 1 of the above embodiment will be described as an example. First, a vinyl acetate content of 2 to 50 parts by weight of an inorganic component comprising a foaming agent, a silicone-based flame retardant, titanium dioxide, and an inorganic filler is added to a base material layer 2 made of a backing paper.
0% or more and 22% or less and MFR of 45 g / 10 minutes or more and 8
A mixed resin material comprising ethylene-vinyl acetate copolymer resin of 0 g / 10 minutes or less is heated and melt-extruded to produce a laminate, and a corona discharge treatment is performed on an unfoamed resin layer surface of the laminate which is exposed, After forming a decorative layer 4 such as a pattern print by gravure printing on the surface subjected to the corona discharge treatment, the unfoamed resin layer is foamed in a heated foaming furnace to form a foamed resin layer 3, After forming the concavo-convex pattern 5 with an embossing plate from the decorative layer 4 side to the foamed resin layer 3,
By cooling, the wallpaper 1 can be obtained. Thus, when the vinyl acetate content is 20% or more and 22% or less, M
By using an ethylene-vinyl acetate copolymer resin having a FR of 45 g / 10 min or more and 80 g / 10 min or less, the foaming agent is not decomposed and foamed in the heat-melt extrusion process step using a T-die, and is thus formed on the surface of the base material layer 2. The decorative layer 4 can also be formed sharply, and the foam 1 can be heated and foamed to give a feeling of volume, excellent pressure resistance, and a wallpaper 1 without curling.
【００２２】[0022]
【実施例】実施例１ 坪量７０ｇ／ｍ2 の難燃性裏打紙（興人製、ＷＫ８７０
Ｄ）上に、下記に示す配合の発泡樹脂層形成組成物のエ
チレン−酢酸ビニル共重合体樹脂に、酢酸ビニル含有量
２２％でそのＭＦＲが４９ｇ／１０分の樹脂（東ソー
（株）、ウルトラセン633:ウルトラセン722=70:30 ）を用い１００μ
ｍになるようにＴダイ押出し法にて製膜同時ラミネート
して、積層体を作成した。 次に積層体の樹脂層面にコロナ放電処理を施して後に、
該コロナ放電処理面にアクリル系樹脂からなる水性イン
キ（ザ・インクテック製、オーデ）でグラビア印刷して
砂目柄模様の絵柄層を設けた。次いでこのものを加熱発
泡炉（２００℃で６０秒）で発泡させると共に、前記印
刷層側から砂目柄模様のエンボス版にてエンボス加工を
行い凹凸模様を形成した本発明の発泡壁紙を得た。Example 1 Flame-retardant backing paper having a basis weight of 70 g / m 2 (WK870 manufactured by Kojin)
D) On the ethylene-vinyl acetate copolymer resin of the foamed resin layer forming composition having the following composition, a resin having a vinyl acetate content of 22% and an MFR of 49 g / 10 min (Tosoh Corp., Ultra 100μ using Sen 633: Ultra Sen 722 = 70: 30)
The film was simultaneously laminated by the T-die extrusion method so as to obtain a laminated body of m. Next, after performing a corona discharge treatment on the resin layer surface of the laminate,
The corona discharge treated surface was gravure-printed with an aqueous ink made of an acrylic resin (manufactured by The Inktec, Ode) to form a grain pattern pattern layer. Next, this was foamed in a heating and foaming furnace (at 200 ° C. for 60 seconds), and embossed with a grain pattern embossing plate from the printing layer side to obtain a foamed wallpaper of the present invention in which an uneven pattern was formed. .
【００２３】 〔発泡樹脂層形成組成物の配合 単位重量部〕 樹脂 エチレン−酢酸ビニル共重合体 １００ 無機充填材 水酸化アルミニウム ５０ 無機顔料 二酸化チタン １５ 発泡剤 ＡＤＣＡ ６ 安定剤 リン酸エステル ３ 難燃剤 シリコーン系 ５[Blend of foamed resin layer forming composition unit weight part] Resin Ethylene-vinyl acetate copolymer 100 Inorganic filler Aluminum hydroxide 50 Inorganic pigment Titanium dioxide 15 Blowing agent ADCA 6 Stabilizer Phosphate ester 3 Flame retardant Silicone System 5
【００２４】実施例２ 前述の発泡樹脂層形成組成物に用いるエチレン−酢酸ビ
ニル共重合体樹脂に、酢酸ビニル含有量２２％でそのＭ
ＦＲが７５ｇ／１０分の樹脂（東ソー（株）、ウルトラセン63
3:ウルトラセン727=72:28 ）を用いた以外、実施例１と同様に
して発泡壁紙を得た。Example 2 The ethylene-vinyl acetate copolymer resin used in the composition for forming a foamed resin layer described above had a vinyl acetate content of 22% and its M value.
Resin with FR of 75g / 10min (Tosoh Corporation, Ultracene 63
3: Ultracene 727 = 72: 28), except that foamed wallpaper was obtained in the same manner as in Example 1.
【００２５】実施例３ 前述の発泡樹脂層形成組成物に用いるエチレン−酢酸ビ
ニル共重合体樹脂に、酢酸ビニル含有量２０％でそのＭ
ＦＲが８０ｇ／１０分の樹脂（東ソー（株）、ウルトラセン63
3:ウルトラセン684=70:30 ）を用いた以外、実施例１と同様に
して発泡壁紙を得た。Example 3 The ethylene-vinyl acetate copolymer resin used in the above-mentioned foamed resin layer forming composition was prepared by adding M
Resin with FR of 80 g / 10 min (Tosoh Corporation, Ultracene 63
3: Ultracene 684 = 70: 30), except that foamed wallpaper was obtained in the same manner as in Example 1.
【００２６】比較例１ 前述の発泡樹脂層形成組成物に用いるエチレン−酢酸ビ
ニル共重合体樹脂に、酢酸ビニル含有量１９％でそのＭ
ＦＲが４５ｇ／１０分の樹脂（日本ユニカー（株）、DQ
DJ1868:DQDJ3150=29.5:70.5 ）を用いた以外、実施例１
と同様にして発泡壁紙を得た。Comparative Example 1 The ethylene-vinyl acetate copolymer resin used in the composition for forming a foamed resin layer described above had a vinyl acetate content of 19%.
Resin with FR of 45g / 10min (Nihon Unicar Co., Ltd., DQ
Example 1 except that DJ1868: DQDJ3150 = 29.5: 70.5) was used.
A foamed wallpaper was obtained in the same manner as described above.
【００２７】比較例２ 前述の発泡樹脂層形成組成物に用いるエチレン−酢酸ビ
ニル共重合体樹脂に、酢酸ビニル含有量２３％でそのＭ
ＦＲが７５ｇ／１０分の樹脂（東ソー（株）、ウルトラセン63
3:ウルトラセン722=56:44 ）を用いた以外、実施例１と同様に
して発泡壁紙を得た。Comparative Example 2 The ethylene-vinyl acetate copolymer resin used in the above-mentioned foamed resin layer forming composition was added to the ethylene-vinyl acetate copolymer resin at a vinyl acetate content of 23%.
Resin with FR of 75g / 10min (Tosoh Corporation, Ultracene 63
3: Ultracene 722 = 56: 44), except that foamed wallpaper was obtained in the same manner as in Example 1.
【００２８】比較例３ 前述の発泡樹脂層形成組成物に用いるエチレン−酢酸ビ
ニル共重合体樹脂に、酢酸ビニル含有量２２％でそのＭ
ＦＲが８５ｇ／１０分の樹脂（東ソー（株）、ウルトラセン63
3:ウルトラセン735=63:37 ）を用いた以外、実施例１と同様に
して発泡壁紙を得た。Comparative Example 3 The ethylene-vinyl acetate copolymer resin used in the composition for forming a foamed resin layer described above had a vinyl acetate content of 22%
Resin with 85g / 10min FR (Tosoh Corporation, Ultracene 63
3: Ultracene 735 = 63: 37), except that foamed wallpaper was obtained in the same manner as in Example 1.
【００２９】比較例４ 前述の発泡樹脂層形成組成物に用いる水酸化アルミニウ
ムの添加量を７０重量部にした以外、実施例１と同様に
して発泡壁紙を得た。Comparative Example 4 A foamed wallpaper was obtained in the same manner as in Example 1 except that the amount of aluminum hydroxide used in the composition for forming a foamed resin layer was changed to 70 parts by weight.
【００３０】上記で作製した実施例１〜３及び比較例１
〜４の発泡壁紙について、各種試験を行い、その結果を
表１に纏めて示した。Examples 1 to 3 and Comparative Example 1 prepared above
Various tests were performed on the foamed wallpapers of Nos. To 4, and the results are summarized in Table 1.
【００３１】試験方法及び評価方法 製膜性： 加工温度１２０℃でＴダイ押出し後、押出
し製膜品の外観を目視評価した。 ○ 発泡なし △ やや発泡気味 × 発泡、製膜不可 耐積圧性： 発泡後に発泡層上に１００ｇ／ｃｍ2 の荷
重をかけ、６０℃雰囲気中に１時間放置後、荷重を取り
除き常温にて２４時間放置後発泡体の回復率を評価。 ○ 回復率９０％以上 △ 回復率９０〜８０％ × 回復率８０％以下 カール性： 発泡後に１０ｃｍ×１０ｃｍの大きさにカ
ットし、１０分間水中浸漬を行い、取り出し、水気を切
ったのち、１時間放置して、サンプルの反りの程度を測
定する。 ○ 反りが１ｃｍ以下 △ 反りが１〜２ｃｍ × 反りが２ｃｍ以上 燃焼試験： ＪＩＳ Ａ１３２１建築物の内装材料及び
工法の難燃試験法によって測定した。発熱量（Ｔｄθ）
は温度時間面積（℃分）を示す。Test Method and Evaluation Method Film Forming Property: After extruding a T-die at a processing temperature of 120 ° C., the appearance of the extruded film formed product was visually evaluated. ○ No foaming △ Somewhat foaming × Foaming, film formation not possible Withstand pressure: After foaming, apply a load of 100 g / cm 2 on the foamed layer, leave it in a 60 ° C atmosphere for 1 hour, remove the load, and remove the load for 24 hours at room temperature After standing, the recovery rate of the foam was evaluated. ○ Recovery rate 90% or more △ Recovery rate 90-80% × Recovery rate 80% or less Curling property: After foaming, cut into a size of 10 cm × 10 cm, immersed in water for 10 minutes, taken out, drained, and then dried. After leaving for a time, the degree of warpage of the sample is measured. ○ Warp: 1 cm or less △ Warp: 1 to 2 cm × Warp: 2 cm or more Combustion test: Measured according to JIS A1321 Building interior materials and flame retardancy test method of construction method. Heat value (Tdθ)
Indicates a temperature time area (° C. minute).
【００３２】 [0032]
【００３３】表１の結果からも明らかなように、エチレ
ン−酢酸ビニル共重合体樹脂の酢酸ビニル含有量を２０
％以上２２％以下とし、そのＭＦＲが４５ｇ／１０分以
上８０ｇ／１０分以下であるエチレン−酢酸ビニル共重
合体樹脂よりなる発泡樹脂層を設けたものが、製膜性、
耐積圧性、カール性ともに良好な成績を示している。As is clear from the results shown in Table 1, the ethylene-vinyl acetate copolymer resin had a vinyl acetate content of 20%.
% To 22% and a foamed resin layer made of an ethylene-vinyl acetate copolymer resin having an MFR of 45 g / 10 min to 80 g / 10 min.
Good results are shown in both the pressure resistance and the curl resistance.
【００３４】[0034]
【発明の効果】以上説明した如く、本発明の壁紙は、基
材層上に、発泡剤、無機質成分、難燃剤を含むエチレン
−酢酸ビニル共重合体樹脂からなる発泡樹脂層と装飾層
が順次設けられた化粧シートにおいて、前記エチレン−
酢酸ビニル共重合体樹脂の酢酸ビニル含有量を２０％以
上２２％以下としたため、発泡樹脂層の耐積圧性、耐カ
ール性、難燃性を確保し、また、ＭＦＲが４５ｇ／１０
分以上８０ｇ／１０分以下にしたため、無機質成分を５
０〜８０重量部添加させても混練押出し中に発泡せず、
非発泡状態で製膜でき、人間や環境に優しいボリュウム
感があると共に風合いがよく意匠性に優れた壁紙が得ら
れる。As described above, in the wallpaper of the present invention, the foamed resin layer composed of the ethylene-vinyl acetate copolymer resin containing the foaming agent, the inorganic component and the flame retardant, and the decorative layer are sequentially formed on the base layer. In the provided decorative sheet, the ethylene-
Since the vinyl acetate content of the vinyl acetate copolymer resin is set to 20% or more and 22% or less, the foamed resin layer secures the build-up pressure resistance, the curl resistance, and the flame retardancy, and has an MFR of 45 g / 10.
Min to 80 g / 10 min or less.
Even when 0 to 80 parts by weight is added, it does not foam during kneading and extrusion,
A film can be formed in a non-foamed state, and a wallpaper having a feeling of volume friendly to humans and the environment and having a good texture and excellent design can be obtained.
【図１】本発明の壁紙の実施形態の層構成図である。FIG. 1 is a layer configuration diagram of an embodiment of a wallpaper according to the present invention.
１ 壁紙 ２ 基材層 ３ 発泡樹脂層 ４ 装飾層 ５ 凹凸模様 1 wallpaper 2 base material layer 3 foam resin layer 4 decoration layer 5 uneven pattern
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｄ２１Ｈ 27/20 Ｄ２１Ｈ 27/20 Ａ Ｅ０４Ｆ 13/00 Ｅ０４Ｆ 13/00 Ｂ Ｆターム(参考） 4F055 AA17 BA13 CA11 DA03 DA12 EA02 EA04 EA24 EA26 FA07 FA38 FA39 GA18 HA06 4F100 AA00B AA00H AA19H AA21H AH06B AH06H AK68B AK68K AR00C AT00A BA03 BA07 BA10A BA10C CA01B CA08B CA23B DG10A DJ01B EH23 EJ02 EJ39 EJ42 EJ55 GB08 HB00C HB21C JA06B JJ07 JK05 JL04 YY00B 4L055 AG17 AG19 AG35 AG59 AG64 AH02 AH26 AH34 AH37 AJ04 BE11 BE13 BE20 EA26 EA32 FA13 FA18 FA19 GA23 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) D21H 27/20 D21H 27/20 A E04F 13/00 E04F 13/00 BF Term (Reference) 4F055 AA17 BA13 CA11 DA03 DA12 EA02 EA04 EA24 EA26 FA07 FA38 FA39 GA18 HA06 4F100 AA00B AA00H AA19H AA21H AH06B AH06H AK68B AK68K AR00C AT00A BA03 BA07 BA10A BA10C CA01B CA08B CA23B DG10 HAG AG AH02 AH26 AH34 AH37 AJ04 BE11 BE13 BE20 EA26 EA32 FA13 FA18 FA19 GA23
Claims (4)
剤を含むエチレン−酢酸ビニル共重合体樹脂からなる発
泡樹脂層と装飾層が順次設けられた化粧シートにおい
て、前記エチレン−酢酸ビニル共重合体樹脂が、酢酸ビ
ニル含有量が２０％以上２２％以下であり、メルトフロ
ーレートが４５ｇ／１０分以上８０ｇ／１０分以下であ
ることを特徴とする壁紙。1. A decorative sheet having a foamed resin layer made of an ethylene-vinyl acetate copolymer resin containing a foaming agent, an inorganic component, and a flame retardant and a decorative layer sequentially provided on a base material layer, wherein the ethylene-acetic acid A wallpaper characterized in that the vinyl copolymer resin has a vinyl acetate content of 20% or more and 22% or less and a melt flow rate of 45 g / 10 minutes or more and 80 g / 10 minutes or less.
１００重量部に対し無機質成分を５０〜８０重量部添加
してなることを特徴とする請求項１に記載の壁紙。2. The wallpaper according to claim 1, wherein 50 to 80 parts by weight of an inorganic component is added to 100 parts by weight of the ethylene-vinyl acetate copolymer resin.
ることを特徴とする請求項１又は２のいずれかに記載の
壁紙。3. The wallpaper according to claim 1, wherein the flame retardant comprises a silicone-based flame retardant.
泡樹脂層にかけて凹凸模様が施されていることを特徴と
する請求項１〜３のいずれかに記載の壁紙。4. The wallpaper according to claim 1, wherein an uneven pattern is provided from an outermost layer on the base material layer to the foamed resin layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000288208A JP4882144B2 (en) | 2000-09-22 | 2000-09-22 | Wallpaper manufacturing method |
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| JP2000288208A JP4882144B2 (en) | 2000-09-22 | 2000-09-22 | Wallpaper manufacturing method |
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| JP2006095986A (en) * | 2004-09-30 | 2006-04-13 | Dainippon Printing Co Ltd | Manufacturing method of foamed wallpaper |
| JP2006097161A (en) * | 2004-09-28 | 2006-04-13 | Dainippon Printing Co Ltd | Method for producing foamed wallpaper |
| JP2006097247A (en) * | 2004-09-28 | 2006-04-13 | Dainippon Printing Co Ltd | Foam wallpaper having high workability and scratch resistance |
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| JP2000127305A (en) * | 1998-10-28 | 2000-05-09 | Dainippon Printing Co Ltd | Decorative sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000071365A (en) * | 1998-08-27 | 2000-03-07 | Dainippon Printing Co Ltd | Decorative sheet |
| JP2000127305A (en) * | 1998-10-28 | 2000-05-09 | Dainippon Printing Co Ltd | Decorative sheet |
| JP2000218751A (en) * | 1999-02-01 | 2000-08-08 | Dainippon Printing Co Ltd | Decoration sheet and its manufacture |
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