JP7073073B2 - Backing paper for wallpaper - Google Patents
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- JP7073073B2 JP7073073B2 JP2017203339A JP2017203339A JP7073073B2 JP 7073073 B2 JP7073073 B2 JP 7073073B2 JP 2017203339 A JP2017203339 A JP 2017203339A JP 2017203339 A JP2017203339 A JP 2017203339A JP 7073073 B2 JP7073073 B2 JP 7073073B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Description
本発明は、オレフィン壁紙等のカレンダー法により製造される壁紙に好適に使用される壁紙用裏打ち紙に関する。 The present invention relates to a backing paper for wallpaper, which is suitably used for wallpaper manufactured by a calendar method such as olefin wallpaper.
壁紙は、一般住宅、ホテル、病院等における室内のインテリアのために、長期間壁に貼付して使用される。壁紙は、化粧層と、該化粧層を保持するための裏打ち紙により構成され、化粧層の材質の違いで、塩化ビニル壁紙、オレフィン壁紙、織物壁紙、紙壁紙、無機質壁紙等がある。 Wallpaper is used by sticking it on the wall for a long period of time for the interior of a room in a general house, a hotel, a hospital, or the like. The wallpaper is composed of a decorative layer and a backing paper for holding the decorative layer, and there are vinyl chloride wallpaper, olefin wallpaper, textile wallpaper, paper wallpaper, inorganic wallpaper and the like depending on the material of the decorative layer.
塩化ビニル壁紙は、ビニルペーストを裏打ち紙の表面に塗工し、塗工物がゲル化した後、印刷、発泡、エンボス等の加工を行って製品化される。塩化ビニル壁紙は、織物壁紙等に比較して安価であるため広く用いられているが、塩化ビニル樹脂層表面に裏打ち紙のパルプ繊維の毛羽立ちが原因となる突起ができ、この部分に印刷不良（白抜け）が発生するという問題がある。特に、近年、ビニルペースト加工工程の高速化により、裏打ち紙表面に対して、これまでより大きなせん断力が加わるようになり、パルプの繊維を起こす力が大きくなるために、上記の問題が従来以上に発生しやすくなってきている。このような問題を解決するために、裏打ち紙表面に塗布する水溶性高分子の塗布量を多くして、裏打ち紙の強度を改善することが行われている。また、塩化ビニルは、可塑剤を含むため、住宅資材としての適性や、廃棄、焼却に際しての環境保護の観点から、近年では、塩化ビニルを使用しない壁紙の要望が増大しており、発泡させたポリオレフィンを用いたオレフィン壁紙が提案されている（特許文献１）。 Vinyl chloride wallpaper is commercialized by applying vinyl paste to the surface of the backing paper, gelling the coated material, and then printing, foaming, embossing, and the like. Vinyl chloride wallpaper is widely used because it is cheaper than woven wallpaper, but there are protrusions on the surface of the vinyl chloride resin layer caused by the fluffing of the pulp fibers of the backing paper, and printing defects (printing defects) are formed in this part. There is a problem that white spots occur. In particular, in recent years, due to the speeding up of the vinyl paste processing process, a larger shearing force has been applied to the backing paper surface, and the force to raise pulp fibers has increased. It is becoming more likely to occur. In order to solve such a problem, the strength of the backing paper is improved by increasing the amount of the water-soluble polymer applied to the surface of the backing paper. In addition, since vinyl chloride contains a plasticizer, the demand for wallpaper that does not use vinyl chloride has increased in recent years from the viewpoint of suitability as a housing material and environmental protection at the time of disposal and incineration, and foamed vinyl chloride. An olefin wallpaper using polyolefin has been proposed (Patent Document 1).
しかし、従来の塩化ビニル壁紙に用いる裏打ち紙を、オレフィン壁紙に用いた場合、オレフィン樹脂等を含む未発泡樹脂を塗布した樹脂フィルムを、裏打ち紙に貼り合わせる、いわゆるカレンダー法による壁紙の製造方法において、裏打ち紙と樹脂フィルムとの密着性が大きく劣り、裏打ち紙と樹脂フィルムとが剥離しやすいという問題があった。 However, when the backing paper used for the conventional vinyl chloride wallpaper is used for the olefin wallpaper, in the so-called calendar method of manufacturing the wallpaper, a resin film coated with an unfoamed resin containing an olefin resin or the like is bonded to the backing paper. There is a problem that the adhesion between the backing paper and the resin film is significantly inferior, and the backing paper and the resin film are easily peeled off.
本発明の課題は、未発泡樹脂を塗布した樹脂フィルムや未発泡樹脂層に対する密着性に優れ、特にオレフィン壁紙等のカレンダー法により製造される壁紙に使用された状態で安定して良好な密着性を発現する壁紙用裏打ち紙を提供することにある。 The subject of the present invention is excellent adhesion to a resin film coated with an unfoamed resin and an unexpanded resin layer, and particularly stable and good adhesion in a state of being used for wallpaper manufactured by a calendar method such as olefin wallpaper. The purpose is to provide a backing paper for wallpaper that expresses.
本発明は、少なくともパルプ及び填料を含む基紙と、該基紙の少なくとも一方の表面に存在する水溶性高分子とを有する壁紙用裏打ち紙であって、前記填料は前記基紙中に８質量％～１５質量％の範囲で含有され、前記水溶性高分子は前記基紙に片面あたり０．０５ｇ／ｍ２～０．２ｇ／ｍ２の範囲で存在することを特徴とする壁紙用裏打ち紙である。 The present invention is a backing paper for wallpaper having a base paper containing at least pulp and a filler and a water-soluble polymer present on at least one surface of the base paper, and the filler is 8 mass in the base paper. The backing paper for wallpaper, which is contained in the range of% to 15% by mass, and the water-soluble polymer is present in the base paper in the range of 0.05 g / m 2 to 0.2 g / m 2 per side. Is.
前記水溶性高分子は、ポリビニルアルコール及び／又は澱粉であることが好ましい。また、接着剤面を有するエチレン－ビニルアルコール共重合体フィルム（エバール（登録商標）ＨＦ－ＭＥ、厚み１２μｍ）の接着剤面と壁紙用裏打ち紙とを接触させ、下記(１)～(５)の条件で加熱接着し、室温まで冷却後、前記エチレン－ビニルアルコール共重合体フィルムと前記壁紙用裏打ち紙を、剥離速度３００ｍｍ／分、剥離方向１８０°の条件で剥離した場合に、８ｍｍ×２５ｍｍの測定面積を画像解析して得られる前記エチレン－ビニルアルコール共重合体フィルム表面に付着の繊維及び填料の面積率が３５％～８０％の範囲にあることが好ましい。
（１）加熱温度：１１５℃
（２）シールバー幅：１０ｍｍ
（３）押し付け圧：２．５ｋｇ／ｃｍ２
（４）押し付け時間：３０秒
（５）フィルム幅：２５ｍｍ
The water-soluble polymer is preferably polyvinyl alcohol and / or starch. Further, the adhesive surface of the ethylene-vinyl alcohol copolymer film (EVAL (registered trademark) HF-ME, thickness 12 μm) having an adhesive surface is brought into contact with the backing paper for wallpaper, and the following (1) to (5) When the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper are peeled off under the conditions of a peeling speed of 300 mm / min and a peeling direction of 180 °, 8 mm × 25 mm. It is preferable that the area ratio of the fibers and the filler adhering to the surface of the ethylene-vinyl alcohol copolymer film obtained by image analysis of the measured area is in the range of 35% to 80%.
(1) Heating temperature: 115 ° C
(2) Seal bar width: 10 mm
(3) Pressing pressure: 2.5 kg / cm 2
(4) Pressing time: 30 seconds (5) Film width: 25 mm
本発明の壁紙用裏打ち紙は、未発泡樹脂を塗布した樹脂フィルムや未発泡樹脂層に対する密着性に優れ、特に、樹脂フィルムを介して発泡樹脂層が積層された、カレンダー法により製造されるオレフィン壁紙等に使用された状態で安定して良好な密着性を発現すると共に、壁面から壁紙を剥離する際のピール適性に優れる。 The backing paper for wallpaper of the present invention has excellent adhesion to a resin film coated with an unexpanded resin and an unexpanded resin layer, and in particular, an olefin produced by a calendar method in which a foamed resin layer is laminated via a resin film. It exhibits stable and good adhesion when used for wallpaper, etc., and has excellent peeling suitability when peeling wallpaper from the wall surface.
本発明の壁紙用裏打ち紙は、少なくともパルプ及び填料を含む基紙と、該基紙の少なくとも一方の表面に存在する水溶性高分子とを有する壁紙用裏打ち紙であって、填料は基紙中に８質量％～１５質量％の範囲で含有され、水溶性高分子は基紙に片面あたり０．０５ｇ／ｍ２～０．２ｇ／ｍ２の範囲で存在する。このような本発明の壁紙用裏打ち紙は、樹脂フィルムを介して発泡樹脂層が積層された状態で壁紙とすることができ、あるいは、発泡樹脂層が積層された状態で壁紙とすることができる。 The wallpaper backing paper of the present invention is a wallpaper backing paper having at least a base paper containing pulp and a filler and a water-soluble polymer present on at least one surface of the base paper, and the filler is contained in the base paper. It is contained in the range of 8% by mass to 15% by mass, and the water-soluble polymer is present in the base paper in the range of 0.05 g / m 2 to 0.2 g / m 2 per side. Such a backing paper for wallpaper of the present invention can be used as wallpaper in a state where foamed resin layers are laminated via a resin film, or can be used as wallpaper in a state where foamed resin layers are laminated. ..
＜パルプ＞
本発明の壁紙用裏打ち紙を構成する基紙は、針葉樹の晒しクラフトパルプ（ＮＢＫＰ）、広葉樹の晒しクラフトパルプ（ＬＢＫＰ）、砕木パルプ（ＧＰ）、サーモメカニカルパルプ（ＴＭＰ）、ケミサーモメカニカルパルプ（ＣＴＭＰ）等の木材繊維由来の各種パルプを主体に単独または任意の配合率で混合したパルプスラリーを用いて抄紙したものである。寸法安定性が低下しない程度であれば、ケナフ、竹、麻などから得られた非木材繊維由来の各種パルプや脱墨パルプ（ＤＩＰ）を用いることも可能である。
また、上記木材繊維由来のパルプ以外に、ポリエチレンテレフタレート等のポリエステル系樹脂繊維、ポリプロピレン、ポリエチレン等のポリオレフィン系樹脂繊維、ナイロン等のポリアミド系樹脂繊維、ポリ塩化ビニル等の含ハロゲン系樹脂繊維等の合成繊維由来のパルプを配合してもよい。
<Pulp>
The base paper constituting the backing paper for wallpaper of the present invention is bleached kraft pulp of coniferous tree (NBKP), bleached kraft pulp of broadleaf tree (LBKP), crushed wood pulp (GP), thermomechanical pulp (TMP), chemithermomechanical pulp ( This is a paper made by using a pulp slurry mainly composed of various pulps derived from wood fibers such as CTMP) and mixed alone or at an arbitrary mixing ratio. Various pulps derived from non-wood fibers obtained from kenaf, bamboo, hemp, etc. and deinked pulp (DIP) can also be used as long as the dimensional stability is not deteriorated.
In addition to the above-mentioned wood fiber-derived pulp, polyester resin fibers such as polyethylene terephthalate, polyolefin resin fibers such as polypropylene and polyethylene, polyamide resin fibers such as nylon, and halogen-containing resin fibers such as polyvinyl chloride can be used. Pulp derived from synthetic fiber may be blended.
本発明においては、使用するパルプのカナダ標準濾水度（ＣＳＦ）を４５０ｍｌ～５５０ｍｌに調整することが好ましい。パルプのＣＳＦは、上記のパルプの少なくとも１種を叩解して調整することができる。また、２種以上のパルプを使用する場合には、別々に叩解したパルプを混合して、ＣＳＦが上記の範囲となるように調整してもよく、２種以上のパルプを混合して叩解し、ＣＳＦが上記の範囲となるように調整してもよい。パルプのＣＳＦが４５０ｍｌより小さいと、壁紙の原紙面側に水性の糊を用いて施工する際に、壁紙の伸びが大きくなるだけでなく乾燥時の収縮も大きくなり、隣同士に貼った壁紙の目開き（隙間）が大きくなる傾向が見られる。更に、繊維間結合が強化されるため、層内強度が高くなり、壁面から壁紙を剥離する際のピール適性が低下する可能性がある。一方、パルプのＣＳＦが５５０ｍｌより大きいと、紙力が不十分になるため、ビニルペースト等の塗工時に断紙が発生し易くなると共に、基紙に毛羽立ちが発生し易くなる傾向が見られる。 In the present invention, it is preferable to adjust the Canadian standard drainage (CSF) of the pulp used to 450 ml to 550 ml. The CSF of the pulp can be adjusted by beating at least one of the above pulps. When two or more types of pulp are used, the pulps beaten separately may be mixed and adjusted so that the CSF is within the above range, and the pulps of two or more types are mixed and beaten. , CSF may be adjusted to be within the above range. If the CSF of the pulp is less than 450 ml, when the water-based glue is used on the base paper side of the wallpaper, not only the elongation of the wallpaper will be large, but also the shrinkage during drying will be large, and the wallpaper pasted next to each other will have a large elongation. There is a tendency for the opening (gap) to increase. Further, since the interfiber bond is strengthened, the strength in the layer is increased, and the peelability when peeling the wallpaper from the wall surface may be lowered. On the other hand, if the CSF of the pulp is larger than 550 ml, the paper strength becomes insufficient, so that paper breakage tends to occur at the time of coating vinyl paste or the like, and fluffing tends to occur on the base paper.
＜填料＞
本発明の壁紙用裏打ち紙を構成する基紙に含有される填料としては、一般の抄紙において使用される填料の中から適宜選択した、少なくとも１種を使用することができる。
このような填料としては、例えば、カオリン、焼成カオリン、デラミネーティッドカオリン、クレー、焼成クレー、デラミネーティッドクレー、イライト、重質炭酸カルシウム、軽質炭酸カルシウム、軽質炭酸カルシウム－シリカ複合物、炭酸マグネシウム、炭酸バリウム、二酸化チタン、酸化亜鉛、酸化珪素、非晶質シリカ、水酸化アルミニウム、水酸化カルシウム、水酸化マグネシウム、水酸化亜鉛等の無機填料、及び尿素－ホルマリン樹脂、ポリスチレン樹脂、フェノール樹脂等の有機填料等が挙げられる。
<Filling fee>
As the filler contained in the base paper constituting the backing paper for wallpaper of the present invention, at least one selected from the fillers used in general papermaking can be used.
Such fillers include, for example, kaolin, calcined kaolin, delaminated kaolin, clay, calcined clay, delaminated clay, erite, heavy calcium carbonate, light calcium carbonate, light calcium carbonate-silica complex, magnesium carbonate. , Inorganic fillers such as barium carbonate, titanium dioxide, zinc oxide, silicon oxide, amorphous silica, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, urea-formalin resin, polystyrene resin, phenol resin, etc. Calcium carbonate and the like can be mentioned.
このような填料は、上述のパルプスラリーに混合して抄紙することができ、基紙における填料の含有量は、固形分で８質量％～１５質量％、好ましくは８質量％～１２質量％の範囲である。基紙に含有される填料が８質量％未満であると、本発明の壁紙用裏打ち紙と発泡樹脂層を有する樹脂フィルムとの密着性が不十分となる。一方、１５質量％を超えると、本発明の壁紙用裏打ち紙と発泡樹脂層を有する樹脂フィルムとの密着性が強くなりすぎ、壁面から壁紙を剥離する際のピール適性が劣るため好ましくない。 Such a filler can be mixed with the above-mentioned pulp slurry to make a paper, and the content of the filler in the base paper is 8% by mass to 15% by mass, preferably 8% by mass to 12% by mass in terms of solid content. It is a range. If the filler contained in the base paper is less than 8% by mass, the adhesion between the backing paper for wallpaper of the present invention and the resin film having a foamed resin layer becomes insufficient. On the other hand, if it exceeds 15% by mass, the adhesion between the backing paper for wallpaper of the present invention and the resin film having a foamed resin layer becomes too strong, and the peelability when peeling the wallpaper from the wall surface is inferior, which is not preferable.
＜水溶性高分子＞
本発明の壁紙用裏打ち紙を構成する基紙の少なくとも一方の表面に存在する水溶性高分子は、壁紙用裏打ち紙の表面強度を高めるものである。
このような水溶性高分子は、水溶性高分子を含有する塗工液を、未発泡樹脂を塗布した樹脂フィルムを貼り合わせる面や未発泡樹脂層を形成する面に少なくとも塗工又は含浸することにより付与することができる。
<Water-soluble polymer>
The water-soluble polymer present on at least one surface of the base paper constituting the wallpaper backing paper of the present invention enhances the surface strength of the wallpaper backing paper.
Such a water-soluble polymer is obtained by at least coating or impregnating a coating liquid containing the water-soluble polymer on the surface to which the resin film coated with the non-foaming resin is bonded or the surface on which the non-foaming resin layer is formed. Can be granted by.
水溶性高分子の塗工量は、片面あたり固形分で０．０５ｇ／ｍ２～０．２ｇ／ｍ２の範囲、好ましくは０．０５ｇ／ｍ２～０．１ｇ／ｍ２の範囲である。塗工量が片面あたり０．０５ｇ／ｍ２未満であると、壁紙用裏打ち紙と発泡樹脂層を有する樹脂フィルムとの密着性が強くなりすぎ、壁面から壁紙を剥離する際のピール適性が劣る。また、壁紙用裏打ち紙の表面強度が不十分となり、未発泡樹脂の塗工時に基紙表面の繊維が毛羽立ち、塗工液のゲル化後に該毛羽立ち部が壁紙表面で突起状となり、印刷不良の原因となる。一方、塗工量が片面あたり０．２ｇ／ｍ２を超えると、未発泡樹脂を塗布した樹脂フィルムとの密着性、特に、ポリオレフィン樹脂フィルムとの密着性が不十分であり好ましくない。 The amount of the water-soluble polymer coated is in the range of 0.05 g / m 2 to 0.2 g / m 2 in terms of solid content per surface, preferably in the range of 0.05 g / m 2 to 0.1 g / m 2 . .. If the coating amount is less than 0.05 g / m 2 per side, the adhesion between the backing paper for wallpaper and the resin film having a foamed resin layer becomes too strong, and the peelability when peeling the wallpaper from the wall surface is inferior. .. In addition, the surface strength of the backing paper for wallpaper becomes insufficient, the fibers on the surface of the base paper become fluffy when the unfoamed resin is applied, and the fluffy part becomes protruding on the wallpaper surface after gelation of the coating liquid, resulting in poor printing. It causes. On the other hand, if the coating amount exceeds 0.2 g / m 2 per side, the adhesion to the resin film coated with the unfoamed resin, particularly the adhesion to the polyolefin resin film is insufficient, which is not preferable.
水溶性高分子としては、例えば、酸化澱粉、酵素変性澱粉、カチオン化澱粉、尿素リン酸エステル化澱粉、ヒドロキシエチルエーテル化澱粉等の各種澱粉、ポリビニルアルコール、カルボキシ変性ポリビニルアルコール、アマイド変性ポリビニルアルコール、スルホン酸変性ポリビニルアルコール、ブチラール変性ポリビニルアルコール等の各種ポリビニルアルコール、ポリアクリルアミド、カルボキシメチルセルロース、ヒドロキシエチルセルロース、メチルセルロース、カゼイン等を単独または２種以上で使用することができる。
水溶性高分子の中で、特にポリビニルアルコール及び澱粉は、壁紙用裏打ち紙の表面の繊維の毛羽立ちを抑制する効果が大きく好適である。
Examples of the water-soluble polymer include various starches such as oxidized starch, enzyme-modified starch, cationized starch, urea phosphate esterified starch, and hydroxyethyl etherified starch, polyvinyl alcohol, carboxy-modified polyvinyl alcohol, and amide-modified polyvinyl alcohol. Various polyvinyl alcohols such as sulfonic acid-modified polyvinyl alcohol and butyral-modified polyvinyl alcohol, polyacrylamide, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, casein and the like can be used alone or in combination of two or more.
Among the water-soluble polymers, polyvinyl alcohol and starch are particularly suitable because they have a great effect of suppressing fluffing of fibers on the surface of the backing paper for wallpaper.
さらに、ポリビニルアルコールのケン化度は、高い方が泡立ち等の操業性の観点から好ましい。このため、本発明においてはケン化度９０以上のポリビニルアルコールを用いることが好ましい。また、ポリビニルアルコールの重合度は、低いと毛羽立ちを抑制する効果が小さく、高いと塗工液の粘度が高くなり塗工性が低下する傾向にある。このため、本発明においては、ポリビニルアルコールの重合度は１０００～２０００であることが好ましい。 Further, a higher degree of saponification of polyvinyl alcohol is preferable from the viewpoint of operability such as foaming. Therefore, in the present invention, it is preferable to use polyvinyl alcohol having a saponification degree of 90 or more. Further, when the degree of polymerization of polyvinyl alcohol is low, the effect of suppressing fluffing is small, and when it is high, the viscosity of the coating liquid tends to increase and the coatability tends to decrease. Therefore, in the present invention, the degree of polymerization of polyvinyl alcohol is preferably 1000 to 2000.
＜サイズ剤＞
本発明の壁紙用裏打ち紙には、通常の紙と同様に、サイズ剤が内添及び／又は外添されていてもよい。サイズ剤としては、酸性抄きの場合、ロジン系サイズ剤、ロジンエマルジョン系サイズ剤、α－カルボキシルメチル飽和脂肪酸等を内添することができる。また、中性抄きの場合には、中性抄紙用ロジン系サイズ剤、アルキルケテンダイマー（ＡＫＤ）、アルケニル無水コハク酸（ＡＳＡ）、カチオンポリマー系サイズ剤等を内添することができる。また、サイズプレス等を用いて塗工又は含浸させる外添においても、上記した各種のサイズ剤を使用することが可能である。
<Size agent>
The wallpaper lining paper of the present invention may be internally and / or externally attached with a sizing agent in the same manner as ordinary paper. As the sizing agent, in the case of acidic papermaking, a rosin-based sizing agent, a rosin emulsion-based sizing agent, α-carboxymethyl saturated fatty acid and the like can be added internally. In the case of neutral papermaking, a rosin-based sizing agent for neutral papermaking, an alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), a cationic polymer-based sizing agent and the like can be added internally. It is also possible to use the above-mentioned various sizing agents in the external coating or impregnation using a size press or the like.
サイズ剤の添加量は特に限定されるものではないが、壁紙用裏打ち紙のステキヒトサイズ度が１０秒以上となるように使用することが好ましい。 The amount of the sizing agent added is not particularly limited, but it is preferable to use the backing paper for wallpaper so that the degree of nice human size is 10 seconds or more.
＜他の内添・外添成分＞
また、本発明の壁紙用裏打ち紙には、品質に影響のない範囲で、定着剤、乾燥紙力剤、湿潤紙力剤、硫酸バンド、歩留り向上剤、染料等を内添薬品として使用することができる。更に、サイズプレス等を用いて塗工又は含浸させる外添薬品として、染料、顔料（クレー、カオリン、炭酸カルシウム、二酸化チタン、シリカ等）等を使用することができる。
<Other internal / external components>
Further, in the backing paper for wallpaper of the present invention, a fixing agent, a dry paper strength agent, a wet paper strength agent, a sulfate band, a yield improver, a dye, etc. shall be used as internal chemicals within a range that does not affect the quality. Can be done. Further, dyes, pigments (clay, kaolin, calcium carbonate, titanium dioxide, silica, etc.) and the like can be used as external chemicals to be coated or impregnated using a size press or the like.
本発明の壁紙用裏打ち紙は、公知の抄紙機によって適宜製造することができ、その抄紙条件は特に限定されるものではない。抄紙機としては、長網抄紙機、ツインワイヤー抄紙機、円網抄紙機等を使用することができる。また、本発明の壁紙用裏打ち紙は、１層であってもよく、２層以上の多層で構成されていてもよい。 The backing paper for wallpaper of the present invention can be appropriately produced by a known paper machine, and the paper making conditions thereof are not particularly limited. As the paper machine, a long net paper machine, a twin wire paper machine, a circular net paper machine and the like can be used. Further, the backing paper for wallpaper of the present invention may have one layer or may be composed of two or more layers.
本発明の壁紙用裏打ち紙の坪量は、４０ｇ／ｍ２以上、１２０ｇ／ｍ２以下であることが好ましい。坪量が４０ｇ／ｍ２未満であると、強度が低く、加工時に断紙が発生し易くなる。また、坪量が１２０ｇ／ｍ２を超えると、壁紙に加工した時に硬くなりすぎ、施工が困難になることがある。 The basis weight of the backing paper for wallpaper of the present invention is preferably 40 g / m 2 or more and 120 g / m 2 or less. If the basis weight is less than 40 g / m 2 , the strength is low and paper breakage is likely to occur during processing. Further, if the basis weight exceeds 120 g / m 2 , it may become too hard when processed into wallpaper, which may make construction difficult.
本発明の壁紙用裏打ち紙の層内強度は、３０～４０Ｎ／ｍの範囲に調整することが好ましい。一般的な印刷用紙や板紙等の用紙においては、層内強度が高いことが要求されるが、本発明の壁紙用裏打ち紙においては、リフォーム時に壁紙を剥がす際に裏打ち紙の層内で容易に剥がれるように層内強度を一定範囲に調整することが好ましい。裏打ち紙の層内強度が４０Ｎ／ｍを超えると、リフォーム時に壁紙を剥がす際に強い力を要するばかりでなく、剥がした際に裏打ち紙の一部は壁紙側に、一部は壁側に残り、壁面に凹凸が生じるため、次に貼合する壁紙を綺麗に貼ることが困難となり、ピール適性が低下するといった不具合等が発生する場合がある。また、裏打ち紙の層内強度が３０Ｎ／ｍ未満であると、剥がす際に層内以外の箇所がちぎれ、やはり壁面に凹凸が生じる問題が発生することがある。 The in-layer strength of the backing paper for wallpaper of the present invention is preferably adjusted to the range of 30 to 40 N / m. In general printing paper and paper such as paperboard, high in-layer strength is required, but in the wallpaper backing paper of the present invention, when the wallpaper is peeled off at the time of reforming, it is easy in the backing paper layer. It is preferable to adjust the strength in the layer to a certain range so that it can be peeled off. When the strength in the layer of the backing paper exceeds 40 N / m, not only a strong force is required to peel off the wallpaper at the time of remodeling, but also a part of the backing paper remains on the wallpaper side and a part on the wall side when peeled off. Since the wall surface is uneven, it becomes difficult to neatly attach the wallpaper to be attached next, and problems such as deterioration of peel suitability may occur. Further, if the in-layer strength of the backing paper is less than 30 N / m, there may be a problem that a portion other than the inside of the layer is torn off when the backing paper is peeled off, and the wall surface is also uneven.
このような本発明の壁紙用裏打ち紙は、接着剤面を有するエチレン－ビニルアルコール共重合体フィルムの接着剤面と接触させ、シールバーの長手方向がフィルムの長手方向と直交するように下記の条件で加熱接着し、室温まで冷却後、エチレン－ビニルアルコール共重合体フィルムと壁紙用裏打ち紙を下記の条件で剥離し、エチレン－ビニルアルコール共重合体フィルム表面に付着した裏打ち紙由来の成分（主にパルプ繊維）を下記の条件で画像解析して面積率を測定した場合に、面積率は３５％～８０％の範囲を示すことが好ましく、４５％～８０％の範囲を示すことがより好ましい。上記の面積率が３５％未満であると、カレンダー法によりオレフィン壁紙を作製する際に、裏打ち紙と樹脂フィルムが剥離しやすくなる傾向が見られ、特に、面積率が１５％未満であると、裏打ち紙と樹脂フィルムの密着性が不十分となることがある。また、面積率が８０％を超えると、壁面から壁紙を剥離する際のピール適性が低下することがある。なお、接着剤面を有するエチレン－ビニルアルコール共重合体フィルムとしては、（株）クラレ製 エバール（登録商標）ＨＦ－ＭＥを使用することができる。 Such a backing paper for wallpaper of the present invention is brought into contact with the adhesive surface of an ethylene-vinyl alcohol copolymer film having an adhesive surface, and the longitudinal direction of the seal bar is orthogonal to the longitudinal direction of the film as described below. After heat-bonding under the conditions and cooling to room temperature, the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper are peeled off under the following conditions, and the components derived from the backing paper adhered to the surface of the ethylene-vinyl alcohol copolymer film ( When the area ratio is measured by image analysis of (mainly pulp fiber) under the following conditions, the area ratio is preferably in the range of 35% to 80%, and more preferably in the range of 45% to 80%. preferable. When the above area ratio is less than 35%, the backing paper and the resin film tend to be easily peeled off when the olefin wallpaper is produced by the calendar method, and in particular, when the area ratio is less than 15%, The adhesion between the backing paper and the resin film may be insufficient. Further, if the area ratio exceeds 80%, the peelability when peeling the wallpaper from the wall surface may decrease. As the ethylene-vinyl alcohol copolymer film having an adhesive surface, EVAL (registered trademark) HF-ME manufactured by Kuraray Co. , Ltd. can be used.
（加熱接着条件）
・加熱接着装置 ： テスター産業（株）製 ＴＰ－７０１S
・加熱温度 ： １１５℃
・シールバー幅 ： １０ｍｍ
・押し付け圧 ： ２．５ｋｇ／ｃｍ２
・押し付け時間 ： ３０秒
・フィルム幅 ： ２５ｍｍ
(Heat bonding conditions)
・ Heat bonding device: TP-701S manufactured by Tester Sangyo Co., Ltd.
・ Heating temperature: 115 ℃
・ Seal bar width: 10 mm
・ Pressing pressure: 2.5 kg / cm 2
・ Pressing time: 30 seconds ・ Film width: 25 mm
（剥離条件）
・測定装置 ： ＯＲＩＥＮＴＥＣ社製 テンシロン万能試験機
（ＲＴＣ－１２１０Ａ）
・剥離速度 ： ３００ｍｍ／分
・剥離方向 ： １８０°
(Peeling condition)
・ Measuring device: Tensilon universal tester manufactured by ORIENTEC
(RTC-1210A)
・ Peeling speed: 300 mm / min ・ Peeling direction: 180 °
（画像解析条件）
・解析装置 ： (株)ニレコ製 画像解析装置（ＬＵＺＥＸ ＳＥ）
・測定面積 ： ８ｍｍ×２５ｍｍ
(Image analysis conditions)
・ Analysis device: Image analysis device (LUZEX SE) manufactured by NIRECO CORPORATION
・ Measurement area: 8 mm x 25 mm
本発明の壁紙用裏打ち紙とエチレン－ビニルアルコール共重合体フィルムとの密着性は、カレンダー法により壁紙を製造する際の、本発明の壁紙用裏打ち紙とポリオレフィン系樹脂、ポリ塩化ビニル系樹脂等を樹脂成分として含有する未発泡樹脂が塗布されたエチレン－ビニルアルコール共重合体フィルムとの密着性の指標となる。すなわち、本発明の壁紙用裏打ち紙は、上記の面積率が３５％～８０％の範囲を示すことにより、エチレン－ビニルアルコール共重合体フィルムに対して優れた密着性を発現し、このことは、ポリオレフィン系樹脂、ポリ塩化ビニル系樹脂等を樹脂成分として含有する未発泡樹脂が塗布されたエチレン－ビニルアルコール共重合体フィルムとの密着性が優れることを意味する。 The adhesion between the backing paper for wallpaper of the present invention and the ethylene-vinyl alcohol copolymer film is the adhesion between the backing paper for wallpaper of the present invention and the polyolefin resin, polyvinyl chloride resin, etc. when manufacturing the wallpaper by the calender method. It is an index of adhesion to an ethylene-vinyl alcohol copolymer film coated with an unfoamed resin containing the above as a resin component. That is, the backing paper for wallpaper of the present invention exhibits excellent adhesion to the ethylene-vinyl alcohol copolymer film by exhibiting the above-mentioned area ratio in the range of 35% to 80%. This means that the adhesion to an ethylene-vinyl alcohol copolymer film coated with an unfoamed resin containing a polyolefin resin, a polyvinyl chloride resin or the like as a resin component is excellent.
なお、本発明の壁紙用裏打ち紙にポリオレフィン系樹脂、ポリ塩化ビニル系樹脂等を樹脂成分として含有する未発泡樹脂が塗工されて未発泡樹脂層が形成された場合は、樹脂とパルプ繊維の絡みつき度合いが高くなるので、良好な密着性が得られる。 When an unexpanded resin containing a polyolefin resin, a polyvinyl chloride resin, or the like as a resin component is coated on the wallpaper backing paper of the present invention to form an unexpanded resin layer, the resin and the pulp fiber are used. Since the degree of entanglement is high, good adhesion can be obtained.
このような本発明の壁紙用裏打ち紙は、水溶性高分子が存在する側の基紙の表面に、未発泡樹脂を塗布した樹脂フィルムを貼り合わせ、あるいは、未発泡樹脂を塗布して未発泡樹脂層を設け、その後、加熱等の発泡処理を施すことにより未発泡樹脂を発泡させて発泡樹脂層を形成し、また、必要に応じて印刷したり、エンボス処理を行って壁紙とすることができる。 In such a backing paper for wallpaper of the present invention, a resin film coated with a non-foaming resin is attached to the surface of a base paper on the side where a water-soluble polymer is present, or a resin film coated with a non-foaming resin is coated and unfoamed. A resin layer may be provided, and then a foaming treatment such as heating may be performed to foam the unfoamed resin to form a foamed resin layer, and if necessary, printing or embossing may be performed to obtain a wallpaper. can.
未発泡樹脂が含有する樹脂成分としては、エチレン－酢酸ビニル共重合体樹脂（ＥＶＡ）、エチレン－メチルメタクリレート（ＥＭＭＡ）、エチレン－エチルアクリレート（ＥＥＡ）、エチレン－メチルアクリレート（ＥＭＡ）等のエチレン共重合体樹脂、ポリ塩化ビニル系樹脂、アクリロニトリル－ブタジエン－スチレン共重合体樹脂、アクリロニトリル－スチレン共重合体樹脂、ポリアミド系樹脂、ポリアセタール系樹脂、アクリル系樹脂、ポリカーボネート系樹脂、ポリエステル系樹脂、ポリ酢酸ビニル系樹脂等を挙げることができる。本発明では、エチレン－酢酸ビニル共重合体樹脂（ＥＶＡ）、エチレン－メチルメタクリレート（ＥＭＭＡ）、エチレン－エチルアクリレート（ＥＥＡ）、エチレン－メチルアクリレート（ＥＭＡ）等のエチレン共重合体樹脂が好ましく、エチレン－酢酸ビニル共重合体樹脂がより好ましい。 The resin components contained in the unfoamed resin include ethylene-vinyl acetate copolymer resin (EVA), ethylene-methylmethacrylate (EMMA), ethylene-ethyl acrylate (EEA), and ethylene-methyl acrylate (EMA). Polymer resin, polyvinyl chloride resin, acrylonitrile-butadiene-styrene copolymer resin, acrylonitrile-styrene copolymer resin, polyamide resin, polyacetal resin, acrylic resin, polycarbonate resin, polyester resin, polyacetic acid Vinyl-based resin and the like can be mentioned. In the present invention, ethylene copolymer resins such as ethylene-vinyl acetate copolymer resin (EVA), ethylene-methylmethacrylate (EMMA), ethylene-ethyl acrylate (EEA), and ethylene-methyl acrylate (EMA) are preferable, and ethylene is preferable. -Vinyl acetate copolymer resin is more preferable.
未発泡樹脂としては、上記した各種樹脂成分の１種、または、２種以上と、熱分解型発泡剤、無機充填剤、発泡助剤（亜鉛化合物等）及びセル調整剤を含む樹脂組成物を好適に使用できる。更に、安定剤、滑剤等を添加剤として用いることができる。 As the non-foaming resin, a resin composition containing one or more of the above-mentioned various resin components, a pyrolytic foaming agent, an inorganic filler, a foaming aid (zinc compound, etc.) and a cell adjusting agent is used. Can be suitably used. Further, stabilizers, lubricants and the like can be used as additives.
未発泡樹脂を塗布した樹脂フィルムを壁紙用裏打ち紙に貼り合わせる場合、または、壁紙用裏打ち紙の上に樹脂フィルムを形成し、この樹脂フィルム上に未発泡樹脂を塗布する場合、樹脂フィルムを形成する樹脂は、上記した各種樹脂成分から適宜選択することが好ましい。 When the resin film coated with the unfoamed resin is attached to the backing paper for wallpaper, or when the resin film is formed on the backing paper for wallpaper and the unfoamed resin is applied on the resin film, the resin film is formed. It is preferable to appropriately select the resin to be used from the above-mentioned various resin components.
例えば、上記した各種樹脂成分を用いて予め樹脂フィルムを形成し、未発泡樹脂をこの樹脂フィルム上に塗布すると共に、この樹脂フィルムを壁紙用裏打ち紙に貼り合わせることができる。また、壁紙用裏打ち紙上に上記した各種樹脂成分を塗布、積層して樹脂フィルムを形成し、この樹脂フィルム上に未発泡樹脂を塗布してもよい。 For example, a resin film can be formed in advance using the above-mentioned various resin components, an unexpanded resin can be applied onto the resin film, and the resin film can be attached to a backing paper for wallpaper. Further, the above-mentioned various resin components may be applied and laminated on the backing paper for wallpaper to form a resin film, and the unfoamed resin may be applied on the resin film.
さらに、発泡樹脂層上に、上記した各種樹脂成分を塗布、積層して樹脂フィルムを形成すると、発泡樹脂層の保護層として機能する。この場合、壁紙用裏打ち紙の上に未発泡樹脂を塗布して未発泡樹脂層を形成し、この未発泡樹脂層上に樹脂フィルムを形成してもよく、未発泡樹脂を塗布した樹脂フィルムを壁紙用裏打ち紙に貼り合わせて未発泡樹脂層を形成し、この未発泡樹脂層上に樹脂フィルムを形成してもよい。なお、未発泡樹脂層に加熱等の発泡処理を施して発泡樹脂層として、その上に保護層として機能する樹脂フィルムを形成してもよく、未発泡樹脂層上に保護層として機能する樹脂フィルムを形成した後、加熱等の発泡処理を施すことにより発泡樹脂層としてもよいが、未発泡樹脂層に加熱等の発泡処理を施して発泡樹脂層として、その上に保護層として機能する樹脂フィルムを形成する方が好ましい。 Further, when the above-mentioned various resin components are applied and laminated on the foamed resin layer to form a resin film, the resin film functions as a protective layer of the foamed resin layer. In this case, an unexpanded resin may be applied on the backing paper for wallpaper to form an unexpanded resin layer, and a resin film may be formed on the unexpanded resin layer. An unexpanded resin layer may be formed by bonding to a backing paper for wallpaper, and a resin film may be formed on the unexpanded resin layer. The unfoamed resin layer may be subjected to a foaming treatment such as heating to form a foamed resin layer on which a resin film functioning as a protective layer may be formed, or a resin film functioning as a protective layer may be formed on the unfoamed resin layer. The foamed resin layer may be formed by subjecting it to a foaming treatment such as heating after forming the resin film, but the unfoamed resin layer is subjected to a foaming treatment such as heating to form a foamed resin layer and a resin film that functions as a protective layer on the foamed resin layer. It is preferable to form.
本発明の壁紙用裏打ち紙は、未発泡樹脂を塗布した樹脂フィルムや未発泡樹脂の塗工層に対して優れた密着性を発現する。したがって、発泡樹脂層が積層され、あるいは、樹脂フィルムを介して発泡樹脂層が積層されオレフィン壁紙等とされた状態で安定して良好な密着性を発現し、更には壁面から壁紙を剥離する際のピール適性に優れる。本発明の壁紙用裏打ち紙は、オレフィン壁紙等のカレンダー法により製造される壁紙の裏打ち紙として好適に使用することができるが、それ以外の壁紙の裏打ち紙としても使用することができる。 The backing paper for wallpaper of the present invention exhibits excellent adhesion to a resin film coated with a non-foaming resin and a coating layer of a non-foaming resin. Therefore, when the foamed resin layer is laminated or the foamed resin layer is laminated via the resin film to form an olefin wallpaper or the like, stable and good adhesion is exhibited, and further, when the wallpaper is peeled off from the wall surface. Excellent peel suitability. The wallpaper backing paper of the present invention can be suitably used as a wallpaper backing paper manufactured by a calendar method such as an olefin wallpaper, but can also be used as a backing paper for other wallpapers.
以下に、実施例によって本発明を更に詳細に説明するが、本発明はこれによって限定されるものではない。 Hereinafter, the present invention will be described in more detail by way of examples, but the present invention is not limited thereto.
［実施例１］
針葉樹晒クラフトパルプ（カナダ標準濾水度（ＣＳＦ）：５００ｍｌ）を３５質量部、広葉樹晒クラフトパルプ（カナダ標準濾水度（ＣＳＦ）：５００ｍｌ）を６５質量部配合したパルプスラリー中に、抄紙ｐＨが４．５になるように硫酸バンドを添加した。次に、填料として、焼成クレー及びカオリン（配合質量比１：１）を灰分１２．０質量％となるように添加して抄紙し、基紙を得た。
[Example 1]
Papermaking pH in a pulp slurry containing 35 parts by mass of softwood bleached kraft pulp (Canada standard drainage (CSF): 500 ml) and 65 parts by mass of broadleaf bleached kraft pulp (Canada standard drainage (CSF): 500 ml). A sulfuric acid band was added so that the value was 4.5. Next, calcined clay and kaolin (blending mass ratio 1: 1) were added as fillers so as to have an ash content of 12.0% by mass, and papermaking was performed to obtain a base paper.
次いで、ポリビニルアルコール（（株）クラレ製、商品名：ＰＶＡ１１７、ケン化度：９８～９９ｍｏｌ％、重合度：１７００）を０．３質量％、スチレン－アクリル系サイズ剤（星光ＰＭＣ（株）製、商品名：ＳＥ２０１８）を０．１質量％含有するサイズプレス塗工液を調製し、この塗工液をサイズプレスコーターを用いて、ポリビニルアルコールの塗工量が片面あたり０．０５ｇ／ｍ２となるように基紙の両面に含浸させて、坪量６７．０ｇ／ｍ２の壁紙用裏打ち紙を製造した。 Next, polyvinyl alcohol (manufactured by Kuraray Co., Ltd., trade name: PVA117, degree of saponification: 98 to 99 mol%, degree of polymerization: 1700) was added in an amount of 0.3% by mass, and a styrene-acrylic size agent (manufactured by Seikou PMC Co., Ltd.). , Product name: SE2018) is prepared in a size press coating solution containing 0.1% by mass, and the amount of polyvinyl alcohol coated on this coating solution is 0.05 g / m 2 per side using a size press coater. Both sides of the base paper were impregnated so as to be so as to produce a backing paper for wallpaper having a basis weight of 67.0 g / m 2 .
［実施例２］
実施例１のサイズプレス塗工液中のポリビニルアルコールを０.５質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．１３ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７．５ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Example 2]
The polyvinyl alcohol in the size press coating liquid of Example 1 was replaced with 0.5% by mass, and both sides of the base paper were impregnated so that the amount of polyvinyl alcohol applied was 0.13 g / m 2 per side. Manufactured a backing paper for wallpaper having a basis weight of 67.5 g / m 2 in the same manner as in Example 1.
［実施例３］
実施例１のサイズプレス塗工液中のポリビニルアルコールを０.８質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．２ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７．５ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Example 3]
The polyvinyl alcohol in the size press coating liquid of Example 1 was replaced with 0.8% by mass, and both sides of the base paper were impregnated so that the amount of polyvinyl alcohol applied was 0.2 g / m 2 per side. Manufactured a backing paper for wallpaper having a basis weight of 67.5 g / m 2 in the same manner as in Example 1.
［実施例４］
填料である焼成クレー及びカオリンを灰分８．０質量％となるように添加して抄紙した他は、実施例１と同様にして、坪量６７．１ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Example 4]
A backing paper for wallpaper having a basis weight of 67.1 g / m 2 was produced in the same manner as in Example 1 except that calcined clay and kaolin as fillers were added so as to have an ash content of 8.0% by mass. ..
［実施例５］
填料である焼成クレー及びカオリンを灰分１５．０質量％となるように添加して抄紙した他は、実施例１と同様にして、坪量６７．２ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Example 5]
A backing paper for wallpaper having a basis weight of 67.2 g / m 2 was produced in the same manner as in Example 1 except that calcined clay and kaolin, which are fillers, were added so as to have an ash content of 15.0% by mass. ..
［実施例６］
実施例４のサイズプレス塗工液中のポリビニルアルコールを０.８質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．２ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例４と同様にして、坪量６７．５ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Example 6]
The polyvinyl alcohol in the size press coating liquid of Example 4 was replaced with 0.8% by mass, and both sides of the base paper were impregnated so that the coating amount of polyvinyl alcohol was 0.2 g / m 2 per side. Manufactured a backing paper for wallpaper having a basis weight of 67.5 g / m 2 in the same manner as in Example 4.
［比較例１］
填料である焼成クレー及びカオリンを灰分１２．６質量％となるように添加し、サイズプレス塗工液中のポリビニルアルコールを１．０質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．２５ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７．５ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Comparative Example 1]
Baking clay and kaolin as fillers were added so as to have an ash content of 12.6% by mass, polyvinyl alcohol in the size press coating liquid was replaced with 1.0% by mass, and the amount of polyvinyl alcohol coated was 0. A backing paper for wallpaper having a basis mass of 67.5 g / m 2 was produced in the same manner as in Example 1 except that both sides of the base paper were impregnated to 25 g / m 2 .
［比較例２］
填料である焼成クレー及びカオリンを灰分７．８質量％となるように添加し、サイズプレス塗工液中のポリビニルアルコールを０．３質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．０５ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７．０ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Comparative Example 2]
Baking clay and kaolin as fillers were added so as to have an ash content of 7.8% by mass, polyvinyl alcohol in the size press coating liquid was replaced with 0.3% by mass, and the amount of polyvinyl alcohol coated was 0. A backing paper for wallpaper having a basis mass of 67.0 g / m 2 was produced in the same manner as in Example 1 except that both sides of the base paper were impregnated so as to be 05 g / m 2 .
［比較例３］
サイズプレス塗工液中のポリビニルアルコールを２．２質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．５５ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７．８ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Comparative Example 3]
Example except that polyvinyl alcohol in the size press coating liquid was replaced with 2.2% by mass and impregnated on both sides of the base paper so that the coating amount of polyvinyl alcohol was 0.55 g / m 2 per one side. In the same manner as in No. 1, a backing paper for wallpaper having a basis weight of 67.8 g / m 2 was produced.
［比較例４］
サイズプレス塗工液中のポリビニルアルコールを０．１５質量％に替え、ポリビニルアルコールの塗工量が片面あたり０．０２５ｇ／ｍ２となるように基紙の両面に含浸させた他は、実施例１と同様にして、坪量６７.０ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Comparative Example 4]
Example except that polyvinyl alcohol in the size press coating liquid was replaced with 0.15% by mass and impregnated on both sides of the base paper so that the coating amount of polyvinyl alcohol was 0.025 g / m 2 per one side. In the same manner as in No. 1, a backing paper for wallpaper having a basis weight of 67.0 g / m 2 was produced.
［比較例５］
填料である焼成クレー及びカオリンを灰分１８．０質量％となるように添加して抄紙した他は、実施例１と同様にして、坪量６７.０ｇ／ｍ２の壁紙用裏打ち紙を製造した。
[Comparative Example 5]
A backing paper for wallpaper having a basis weight of 67.0 g / m 2 was produced in the same manner as in Example 1 except that calcined clay and kaolin as fillers were added so as to have an ash content of 18.0% by mass. ..
［評 価］
上記のように製造した壁紙用裏打ち紙（実施例１～６、比較例１～５）について、接着剤面を有するエチレン－ビニルアルコール共重合体フィルム（（株）クラレ製 エバール（登録商標）ＨＦ－ＭＥ、厚み１２μｍ）を用いて、樹脂密着性を評価した。
[evaluation]
Regarding the wallpaper backing paper (Examples 1 to 6 and Comparative Examples 1 to 5) manufactured as described above, an ethylene-vinyl alcohol copolymer film having an adhesive surface (Eval (registered trademark) HF manufactured by Kuraray Co., Ltd.) -ME, thickness 12 μm) was used to evaluate the resin adhesion.
すなわち、壁紙用裏打ち紙と接着剤面を有するエチレン－ビニルアルコール共重合体フィルムの接着剤面とを接触させ、シールバーの長手方向がフィルムの長手方向と直交するように、下記の条件で加熱接着した。
（加熱接着条件）
・加熱接着装置 ： テスター産業（株）製 ＴＰ－７０１Ｓ
・加熱温度 ： １１５℃
・シールバー幅 ： １０ｍｍ
・押し付け圧 ： ２．５ｋｇ／ｃｍ２
・押し付け時間 ： ３０秒
・フィルム幅 ： ２５ｍｍ
That is, the backing paper for wallpaper and the adhesive surface of the ethylene-vinyl alcohol copolymer film having an adhesive surface are brought into contact with each other and heated under the following conditions so that the longitudinal direction of the seal bar is orthogonal to the longitudinal direction of the film. Glued.
(Heat bonding conditions)
・ Heat bonding device: TP-701S manufactured by Tester Sangyo Co., Ltd.
・ Heating temperature: 115 ℃
・ Seal bar width: 10 mm
・ Pressing pressure: 2.5 kg / cm 2
・ Pressing time: 30 seconds ・ Film width: 25 mm
その後、室温まで冷却し、エチレン－ビニルアルコール共重合体フィルムと壁紙用裏打ち紙を下記の条件で剥離した。
（剥離条件）
・測定装置 ： ＯＲＩＥＮＴＥＣ社製 テンシロン万能試験機
（ＲＴＣ－１２１０Ａ）
・剥離速度 ： ３００ｍｍ／分
・剥離方向 ： １８０°
Then, it was cooled to room temperature, and the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper were peeled off under the following conditions.
(Peeling condition)
・ Measuring device: Tensilon universal tester manufactured by ORIENTEC
(RTC-1210A)
・ Peeling speed: 300 mm / min ・ Peeling direction: 180 °
剥離後のエチレン－ビニルアルコール共重合体フィルム表面に付着した裏打ち紙由来の成分（主にパルプ繊維）を下記の条件で画像解析して面積率を測定した。
（画像解析条件）
・解析装置 ： (株)ニレコ製 画像解析装置（ＬＵＺＥＸ ＳＥ）
・測定面積 ： ８ｍｍ×２５ｍｍ
The area ratio was measured by image analysis of the components (mainly pulp fibers) derived from the backing paper adhering to the surface of the ethylene-vinyl alcohol copolymer film after peeling under the following conditions.
(Image analysis conditions)
・ Analysis device: Image analysis device (LUZEX SE) manufactured by NIRECO CORPORATION
・ Measurement area: 8 mm x 25 mm
測定した面積率を、下記の表１に示した。また、樹脂密着性を下記の基準で評価し、結果を下記の表１に示した。また、実施例１、比較例１～２における剥離後のエチレン－ビニルアルコール共重合体フィルムの表面写真を図１～図３に示した。
（樹脂密着性の評価基準）
◎ ： 面積率が４５％以上、８０％以下の範囲にある。
○ ： 面積率が３５％以上、４５％未満の範囲にある。
△ ： 面積率が１５％以上、３５％未満の範囲にある、または、
８０％を超える範囲にある。
× ： 面積率が１５％未満の範囲にある。
The measured area ratios are shown in Table 1 below. The resin adhesion was evaluated according to the following criteria, and the results are shown in Table 1 below. Further, the surface photographs of the ethylene-vinyl alcohol copolymer film after peeling in Example 1 and Comparative Examples 1 and 2 are shown in FIGS. 1 to 3.
(Evaluation criteria for resin adhesion)
⊚: The area ratio is in the range of 45% or more and 80% or less.
◯: The area ratio is in the range of 35% or more and less than 45%.
Δ: The area ratio is in the range of 15% or more and less than 35%, or
It is in the range of over 80%.
X: The area ratio is in the range of less than 15%.
本発明の壁紙用裏打ち紙である実施例１～６の壁紙用裏打ち紙上に、カレンダー法によりポリオレフィン樹脂を用いた樹脂フィルム、未発泡樹脂をこの順に積層し、その後、加熱による発泡処理を施してオレフィン壁紙を作製したところ、裏打ち紙と樹脂フィルムとの密着性が良好であり、更には壁面から壁紙を剥離する際のピール適性に優れることを確認した。 A resin film using a polyolefin resin and an unfoamed resin are laminated in this order on the wallpaper backing paper of Examples 1 to 6, which is the wallpaper backing paper of the present invention, and then foamed by heating. When the olefin wallpaper was produced, it was confirmed that the adhesion between the backing paper and the resin film was good, and that the peel suitability when peeling the wallpaper from the wall surface was excellent.
特に、面積率が３５％～８０％の範囲にある実施例１～５の壁紙用裏打ち紙は、裏打ち紙と樹脂フィルムとの密着性とピール適性のバランスが良好であり、オレフィン壁紙等のカレンダー法により製造される壁紙に好適に使用可能であった。 In particular, the wallpaper backing papers of Examples 1 to 5 having an area ratio in the range of 35% to 80% have a good balance between the adhesion between the backing paper and the resin film and the peelability, and are calendars for olefin wallpaper and the like. It could be suitably used for wallpaper manufactured by the method.
これに対して、比較例１～５の壁紙用裏打ち紙上に、カレンダー法によりポリオレフィン樹脂を用いた樹脂フィルム、未発泡樹脂をこの順に積層し、その後、加熱による発泡処理を施してオレフィン壁紙を作製したところ、比較例１～３は裏打ち紙と樹脂フィルムの密着性が不十分で剥離しやすく、比較例４～５は裏打ち紙と樹脂フィルムとの密着性が強すぎ、壁面から壁紙を剥離する際のピール適性が劣るものであった。 On the other hand, a resin film using a polyolefin resin and an unfoamed resin are laminated in this order on the wallpaper backing papers of Comparative Examples 1 to 5 by the calendar method, and then foamed by heating to prepare an olefin wallpaper. As a result, in Comparative Examples 1 to 3, the adhesion between the backing paper and the resin film was insufficient and the wallpaper was easily peeled off, and in Comparative Examples 4 to 5, the adhesion between the backing paper and the resin film was too strong and the wallpaper was peeled off from the wall surface. The peel suitability was inferior.
本発明の壁紙用裏打ち紙は、未発泡樹脂を塗布した樹脂フィルムや未発泡樹脂層に対する密着性に優れ、特に、樹脂フィルムを介して発泡樹脂層が積層された、カレンダー法により製造されるオレフィン壁紙等に使用された状態で安定して良好な密着性を発現すると共に、壁面から壁紙を剥離する際のピール適性に優れるもので、種々の壁紙製造等に利用可能である。 The backing paper for wallpaper of the present invention has excellent adhesion to a resin film coated with an unexpanded resin and an unexpanded resin layer, and in particular, an olefin produced by a calendar method in which a foamed resin layer is laminated via a resin film. It stably exhibits good adhesion in the state of being used for wallpaper and the like, and has excellent peeling suitability when peeling the wallpaper from the wall surface, and can be used for various wallpaper manufacturing and the like.
Claims (3)
前記填料は前記基紙中に８質量％～１５質量％の範囲で含有され、
前記水溶性高分子は前記基紙に片面あたり０．０５ｇ／ｍ２～０．２ｇ／ｍ２の範囲で存在することを特徴とする壁紙用裏打ち紙。 In a wallpaper lining paper having a base paper containing at least pulp and a filler and a water-soluble polymer present on at least one surface of the base paper.
The filler is contained in the base paper in the range of 8% by mass to 15% by mass.
A backing paper for wallpaper, wherein the water-soluble polymer is present in the base paper in the range of 0.05 g / m 2 to 0.2 g / m 2 per side.
（１）加熱温度：１１５℃
（２）シールバー幅：１０ｍｍ
（３）押し付け圧：２．５ｋｇ／ｃｍ２
（４）押し付け時間：３０秒
（５）フィルム幅：２５ｍｍ The adhesive surface of an ethylene-vinyl alcohol copolymer film (EVAL (registered trademark) HF-ME, thickness 12 μm) having an adhesive surface is brought into contact with the backing paper for wallpaper, and the conditions (1) to (5) below are met. When the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper are peeled off under the conditions of a peeling speed of 300 mm / min and a peeling direction of 180 °, the measurement is 8 mm × 25 mm. The wallpaper lining according to claim 1 or 2, wherein the area ratio of the fiber and the filler adhering to the surface of the ethylene-vinyl alcohol copolymer film obtained by image analysis of the area is in the range of 35% to 80%. paper.
(1) Heating temperature: 115 ° C
(2) Seal bar width: 10 mm
(3) Pressing pressure: 2.5 kg / cm 2
(4) Pressing time: 30 seconds (5) Film width: 25 mm
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150718A (en) | 2008-12-26 | 2010-07-08 | Daio Paper Corp | Processed paper |
| JP2010196216A (en) | 2009-02-27 | 2010-09-09 | Nippon Paper Industries Co Ltd | Backing paper for wallpaper |
| JP2012206384A (en) | 2011-03-30 | 2012-10-25 | Nippon Paper Industries Co Ltd | Method for producing sheet for container made of heat insulating paper |
| JP2013079454A (en) | 2011-09-30 | 2013-05-02 | Dainippon Printing Co Ltd | Functional foamed wall paper |
| JP2016151066A (en) | 2015-02-16 | 2016-08-22 | 王子ホールディングス株式会社 | Backing paper for wallpaper |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3288258B2 (en) * | 1997-05-09 | 2002-06-04 | アキレス株式会社 | Vinyl chloride resin wallpaper and backing paper for vinyl chloride resin wallpaper |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010150718A (en) | 2008-12-26 | 2010-07-08 | Daio Paper Corp | Processed paper |
| JP2010196216A (en) | 2009-02-27 | 2010-09-09 | Nippon Paper Industries Co Ltd | Backing paper for wallpaper |
| JP2012206384A (en) | 2011-03-30 | 2012-10-25 | Nippon Paper Industries Co Ltd | Method for producing sheet for container made of heat insulating paper |
| JP2013079454A (en) | 2011-09-30 | 2013-05-02 | Dainippon Printing Co Ltd | Functional foamed wall paper |
| JP2016151066A (en) | 2015-02-16 | 2016-08-22 | 王子ホールディングス株式会社 | Backing paper for wallpaper |
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