JP2019077957A - Backing paper for wallpaper - Google Patents

Backing paper for wallpaper Download PDF

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JP2019077957A
JP2019077957A JP2017203339A JP2017203339A JP2019077957A JP 2019077957 A JP2019077957 A JP 2019077957A JP 2017203339 A JP2017203339 A JP 2017203339A JP 2017203339 A JP2017203339 A JP 2017203339A JP 2019077957 A JP2019077957 A JP 2019077957A
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wallpaper
backing paper
paper
resin
base paper
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JP7073073B2 (en
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吉田 義雄
Yoshio Yoshida
義雄 吉田
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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Nippon Paper Industries Co Ltd
Jujo Paper Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W90/00Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
    • Y02W90/10Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics

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  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
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Abstract

To provide backing paper for wallpaper having excellent adhesion to a resin film applied with unexpanded resin or an unexpanded resin layer, and exhibiting good adhesion stably when used in wallpaper manufactured by a calender method, such as olefin wallpaper.SOLUTION: The backing paper has base paper containing at least a pulp and a filler and a water-soluble polymer being present on at least one surface of the base paper. The filler of 8-15 mass% is contained in the base paper, and the water-soluble polymer of 0.05-0.2 g/mis present per one surface in the base paper. The water-soluble polymer is desirably a polyvinyl alcohol and/or a starch.SELECTED DRAWING: Figure 1

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 wallpaper backing paper suitably used for wallpaper produced 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 to a wall for a long time for interior decoration in general houses, hotels, hospitals, etc. The wallpaper is composed of a cosmetic layer and a backing paper for holding the cosmetic layer, and there are vinyl chloride wallpaper, olefin wallpaper, woven wallpaper, paper wallpaper, inorganic wallpaper and the like, depending on the material of the cosmetic 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)。   The vinyl chloride wallpaper is produced by applying a vinyl paste on the surface of a backing paper, gelling the applied material, and then processing such as printing, foaming, embossing and the like to produce a product. Although vinyl chloride wallpaper is widely used because it is inexpensive compared to textile wallpaper etc., projections caused by the fluffing of the pulp fibers of the backing paper are formed on the surface of the vinyl chloride resin layer, and printing defects ( There is a problem that white spots occur. In particular, in recent years, with the speeding up of the vinyl paste processing process, a larger shear force is applied to the surface of the backing paper than before, and the force causing pulp fibers is increased. It is becoming easy to occur. In order to solve such problems, 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, in recent years there has been an increasing demand for vinyl chloride-free wallpaper from the viewpoint of suitability as a housing material and environmental protection during disposal and incineration. An olefin wallpaper using a polyolefin has been proposed (Patent Document 1).

特開2011−179161号公報JP, 2011-179161, A

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 a backing paper used for conventional vinyl chloride wallpaper is used for olefin wallpaper, a resin film coated with an unfoamed resin containing an olefin resin or the like is bonded to the backing paper, ie, in the wallpaper production method by the so-called calendar method. There was a problem that the adhesion between the backing paper and the resin film was significantly inferior, and the backing paper and the resin film were 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 object of the present invention is to provide excellent adhesion to a resin film coated with an unfoamed resin and an unfoamed resin layer, and in particular, stable and good adhesion in the state of being used for wallpaper manufactured by a calendar method such as olefin wallpaper. It is to provide a backing paper for wallpaper expressing the

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/m〜0.2g/m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 wallpaper backing paper comprising 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, wherein the filler is 8% by mass in the base paper. % is contained in an amount of 15 wt%, the water-soluble polymer wallpaper backing sheet, characterized in that present in the range of per side 0.05g / m 2 ~0.2g / m 2 to the base paper It 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した場合に、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/cm
(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 side of the ethylene-vinyl alcohol copolymer film having an adhesive side is brought into contact with the backing paper for wallpaper, heated and bonded under the following conditions (1) to (5), and cooled to room temperature, When the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper are peeled off, the area ratio of fibers and fillers attached to the surface of the ethylene-vinyl alcohol copolymer film is in the range of 35% to 80%. Is preferred.
(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 is excellent in adhesion to a non-foamed resin-coated resin film and non-foamed resin layer, and in particular, an olefin produced by a calendar method in which a foamed resin layer is laminated via a resin film. In addition to stably expressing good adhesion in the state of being used for wallpaper etc., it is excellent in the peeling aptitude at the time of peeling wallpaper from a wall surface.

本発明の実施例1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示す図である。It is a figure which shows the surface photograph of the ethylene-vinyl alcohol copolymer film after peeling in Example 1 of this invention. 本発明の比較例1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示す図である。It is a figure which shows the surface photograph of the ethylene-vinyl alcohol copolymer film after peeling in the comparative example 1 of this invention. 本発明の比較例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示す図である。It is a figure which shows the surface photograph of the ethylene-vinyl alcohol copolymer film after peeling in comparative example 2 of the present invention.

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/m〜0.2g/m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 backing paper for wallpaper of the present invention is a backing paper for wallpaper 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. 8 is contained in an amount of 15 mass%, water-soluble polymer is present in a range of per side 0.05g / m 2 ~0.2g / m 2 based on paper. Such backing paper for wallpaper of the present invention can be used as a wallpaper in a state in which a foamed resin layer is laminated via a resin film, or can be used as a wallpaper in a state in which a foamed resin layer is 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 softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), ground pulp (GP), thermomechanical pulp (TMP), chemithermomechanical pulp Papermaking is carried out using a pulp slurry in which various pulps derived from wood fibers such as CTMP) are mainly mixed with one another or in any mixing ratio. It is also possible to use various non-wood fiber-derived pulps and deinked pulp (DIP) obtained from kenaf, bamboo, hemp or the like, as long as dimensional stability does not decrease.
In addition to pulp derived from wood fibers, polyester resin fibers such as polyethylene terephthalate, polyolefin resin fibers such as polypropylene and polyethylene, polyamide resin fibers such as nylon, halogen-containing resin fibers such as polyvinyl chloride, etc. You may mix | blend the pulp derived from a synthetic fiber.

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 freeness (CSF) of the pulp to be used to 450 ml to 550 ml. The CSF of the pulp can be adjusted by refining at least one of the above pulps. Moreover, when using 2 or more types of pulp, you may mix separately beaten | pulverized pulp and it may be adjusted so that CSF may become said range, 2 or more types of pulp may be mixed and it will be beaten. , CSF may be adjusted to be in the above range. When the CSF of pulp is smaller than 450 ml, when construction is carried out using an aqueous paste on the original paper side of the wallpaper, not only the elongation of the wallpaper becomes large but also the shrinkage at the time of drying becomes large, There is a tendency for the opening (gap) to increase. Furthermore, since the inter-fiber bonding is strengthened, the intra-layer strength may be increased, and the peelability when peeling the wallpaper from the wall may be reduced. On the other hand, when the CSF of the pulp is larger than 550 ml, the paper strength is insufficient, so that the paper is likely to be generated at the time of coating with a vinyl paste or the like, and the base paper tends to be easily fuzzed.

<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。
<Filler>
As a filler contained in the base paper which comprises the backing paper for wallpaper of this invention, at least 1 sort (s) suitably 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, illite, ground calcium carbonate, light calcium carbonate, light calcium carbonate-silica composite, magnesium carbonate , Inorganic fillers such as barium carbonate, titanium dioxide, zinc oxide, silicon oxide, amorphous silica, aluminum hydroxide, calcium hydroxide, magnesium hydroxide, zinc hydroxide, and urea-formalin resin, polystyrene resin, phenol resin, etc. Organic fillers and the like.

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 for paper making, 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 solid content It is a range. If the filler contained in the base paper is less than 8% by mass, the adhesion between the wallpaper backing paper of the present invention and the resin film having a foamed resin layer is 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 at the time of peeling the wallpaper from the wall is inferior.

<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 to at least coat or impregnate a coating liquid containing a water-soluble polymer on the surface to which the resin film coated with the non-foamed resin is to be bonded or on the surface forming the non-foamed resin layer It can be given by

水溶性高分子の塗工量は、片面あたり固形分で0.05g/m〜0.2g/mの範囲、好ましくは0.05g/m〜0.1g/mの範囲である。塗工量が片面あたり0.05g/m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/m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 coating amount of the water-soluble polymer is in the range of 0.05g / m 2 ~0.2g / m 2 in terms of solid per side content, is preferably in the range of 0.05g / m 2 ~0.1g / m 2 . If the coating amount is less than 0.05 g / m 2 per one surface, the adhesion between the backing paper for wallpaper and the resin film having a foamed resin layer becomes too strong, and the peelability at the time of peeling the wallpaper from the wall is poor . In addition, the surface strength of the backing paper for wallpaper becomes insufficient, and the fibers on the surface of the base paper are fluffed at the time of application of the unfoamed resin, and after the gelation of the coating liquid, the fluffs become projections on the wallpaper surface, causing printing defects It becomes a cause. On the other hand, when the coating amount exceeds 0.2 g / m 2 per one side, the adhesion to the resin film coated with the unfoamed resin, in particular, 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, hydroxyethyl etherified starch, polyvinyl alcohol, carboxy modified polyvinyl alcohol, amide modified polyvinyl alcohol, Sulfonic acid modified polyvinyl alcohol, various polyvinyl alcohols such as butyral modified polyvinyl alcohol, polyacrylamide, carboxymethyl cellulose, hydroxyethyl cellulose, methyl cellulose, casein and the like can be used singly or in combination of two or more.
Among water-soluble polymers, polyvinyl alcohol and starch are particularly preferable because they have a large effect of suppressing fiber fuzzing 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。   Furthermore, the higher the degree of saponification of polyvinyl alcohol, the better from the viewpoint of operability such as foaming. For this reason, in the present invention, it is preferable to use polyvinyl alcohol having a degree of saponification of 90 or more. When the degree of polymerization of polyvinyl alcohol is low, the effect of suppressing fuzzing is small, and when it is high, the viscosity of the coating liquid tends to be high and the coatability tends to be low. Therefore, in the present invention, the polymerization degree 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>
A sizing agent may be internally and / or externally added to the backing paper for wallpaper of the present invention, as with ordinary paper. As the sizing agent, in the case of acid forming, a rosin type sizing agent, a rosin emulsion type sizing agent, an α-carboxymethyl methyl saturated fatty acid and the like can be internally added. In the case of neutral papermaking, a rosin-based sizing agent for neutral papermaking, alkyl ketene dimer (AKD), alkenyl succinic anhydride (ASA), cationic polymer-based sizing agent and the like can be internally added. The various sizing agents described above can also be used in the external addition in which coating or impregnation is performed 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。   Although the addition amount of the sizing agent is not particularly limited, it is preferable to use it so that the size degree of the background paper for wallpaper becomes 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 and external additives>
In addition, in the backing paper for wallpaper of the present invention, fixer, dry strength agent, wet strength agent, sulfuric acid band, retention aid, dye, etc. may be used as an internal additive chemical as long as the quality is not affected. Can. Furthermore, dyes, pigments (clay, kaolin, calcium carbonate, titanium dioxide, silica, etc.) and the like can be used as external additive 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 are not particularly limited. As the paper machine, a Fourdrinier paper machine, a twin wire paper machine, a cylinder paper machine, etc. can be used. In addition, the backing paper for wallpaper of the present invention may be a single 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/m以上、120g/m以下であることが好ましい。坪量が40g/m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/m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. Moreover, when a basis weight exceeds 120 g / m < 2 >, when it is processed into a wallpaper, it becomes too hard and construction may become 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 in the range of 30 to 40 N / m. In the case of general printing paper and paperboard, etc., it is required that the strength in the layer is high, but in the backing paper for wallpaper of the present invention, when the wallpaper is peeled off at the time of remodeling, it is easily done in the backing paper layer. It is preferable to adjust the strength in the layer to a certain range so as to peel off. When the strength in the layer of the backing paper exceeds 40 N / m, not only a strong force is required when removing the wallpaper at the time of remodeling, but when the material is removed, part of the backing paper remains on the wallpaper side and part remains on the wall side Since unevenness occurs on the wall surface, it becomes difficult to beautifully attach the wallpaper to be laminated next, and problems such as a decrease in peel aptitude may occur. In addition, when the strength in the layer of the backing paper is less than 30 N / m, a part other than the inside of the layer may be torn off during peeling, which may also cause a problem of unevenness on the wall surface.

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、クラレ(株)製 エバールHF−MEを使用することができる。   Such wallpaper backing paper of the present invention is brought into contact with the adhesive side of an ethylene-vinyl alcohol copolymer film having an adhesive side, and the longitudinal direction of the seal bar is perpendicular to the longitudinal direction of the film. Heat bond under conditions and cool to room temperature, then peel off the ethylene-vinyl alcohol copolymer film and the backing paper for wallpaper under the following conditions, and the component derived from the backing paper attached to the ethylene-vinyl alcohol copolymer film surface ( The area ratio is preferably 35% to 80%, and preferably 45% to 80%, when the area ratio is measured by image analysis of pulp fibers under the following conditions. preferable. There is a tendency that the backing paper and the resin film are easily peeled off when producing the olefin wallpaper by the calendar method if the above-mentioned area ratio is less than 35%, and in particular, the area ratio is less than 15%, The adhesion between the backing paper and the resin film may be insufficient. Moreover, when an area ratio exceeds 80%, the peeling aptitude at the time of peeling wallpaper from a wall surface may fall. In addition, Kuraray Co., Ltd. product Eval HF-ME can be used as an ethylene-vinyl alcohol copolymer film which has an adhesive agent surface.

(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/cm
・押し付け時間 : 30秒
・フィルム幅 : 25mm
(Heat bonding conditions)
・ Heat bonding apparatus: TP-701S manufactured by Tester Sangyo Co., Ltd.
・ Heating temperature: 115 ° C
・ Sealing 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 conditions)
・ Measuring device: ORIENTEC's Tensiron universal testing machine
(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 condition)
・ Analyzer: Image analyzer (LUZEX SE) manufactured by Nireko Co., Ltd.
・ Measurement area: 8mm x 25mm

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 determined by using the backing paper for wallpaper of the present invention and a polyolefin resin, polyvinyl chloride resin, etc. when producing the wallpaper by the calendar method. It becomes an index of adhesion with an ethylene-vinyl alcohol copolymer film coated with an unfoamed resin containing as a resin component. That is, the backing paper for wallpaper of the present invention exhibits excellent adhesion to an ethylene-vinyl alcohol copolymer film when the above-mentioned area ratio exhibits a range of 35% to 80%, which means that It 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 a non-foamed resin containing a polyolefin resin, polyvinyl chloride resin or the like as a resin component is applied to the backing paper for wallpaper of the present invention to form a non-foamed resin layer, 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 an unfoamed resin is bonded to the surface of a base paper on which a water-soluble polymer is present, or an unfoamed resin is coated to produce an unfoamed resin. A resin layer is provided, and then foaming treatment such as heating is performed to cause the non-foamed resin to foam to form a foamed resin layer, and printing as required, or embossing treatment to obtain wallpaper it 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。   Examples of resin components contained in the unfoamed resin include ethylene-vinyl acetate copolymer resin (EVA), ethylene-methyl methacrylate (EMMA), ethylene-ethyl acrylate (EEA), ethylene-methyl acrylate (EMA), etc. 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 A vinyl resin etc. can be mentioned. In the present invention, ethylene copolymer resins such as ethylene-vinyl acetate copolymer resin (EVA), ethylene-methyl methacrylate (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 a non-foamed resin, a resin composition containing one or two or more of the various resin components described above, a thermal decomposition-type foaming agent, an inorganic filler, a foaming assistant (such as a zinc compound) and a cell regulator It can be used suitably. Furthermore, 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 pasting a resin film coated with unfoamed resin on a backing paper for wallpaper or forming a resin film on the backing paper for wallpaper and applying a non-foamed resin on this resin film, a resin film is formed It is preferable that the resin to be used is appropriately selected from the various resin components described above.

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 may be formed in advance using the various resin components described above, and the non-foamed resin may be applied onto the resin film, and the resin film may be bonded to the backing paper for wallpaper. Alternatively, the above-described various resin components may be applied and laminated on a backing paper for wallpaper to form a resin film, and an 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。   Furthermore, 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, a non-foamed resin may be applied on the backing paper for wallpaper to form a non-foamed resin layer, and a resin film may be formed on the non-foamed resin layer. A non-foamed resin layer may be formed by laminating on a backing paper for wallpaper, and a resin film may be formed on the non-foamed resin layer. The non-foamed resin layer may be subjected to a foaming treatment such as heating to form a resin film functioning as a protective layer thereon as a foamed resin layer, and a resin film functioning as a protective layer on the non-foamed resin layer After forming the layer, the foamed resin layer may be treated by foaming such as heating, but the unfoamed resin layer may be subjected to foaming such as heating to form a foamed resin layer, which functions as a protective layer on the foamed resin layer. Is preferred.

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 an unfoamed resin and a coated layer of an unfoamed resin. Therefore, when the foamed resin layer is laminated, or the foamed resin layer is laminated via the resin film to be an olefin wallpaper etc., it stably exhibits good adhesion, and further, when peeling the wallpaper from the wall surface Excellent in the peel aptitude. The wallpaper backing paper of the present invention can be suitably used as a backing paper for wallpaper produced by a calendar method such as olefin wallpaper, but can also be used as a backing paper for other wallpaper.

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 thereby.

[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 (500 ml of Canadian standard freeness (CSF)) and 65 parts by mass of hardwood bleached kraft pulp (500 ml of Canadian standard freeness (CSF)) The sulfuric acid band was added so that the was 4.5. Next, calcined clay and kaolin (compounding mass ratio 1: 1) were added as fillers so as to have an ash content of 12.0 mass%, and paper making 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/mとなるように基紙の両面に含浸させて、坪量67.0g/mの壁紙用裏打ち紙を製造した。 Next, 0.3% by mass of polyvinyl alcohol (manufactured by Kuraray Co., Ltd., trade name: PVA117, saponification degree: 98 to 99 mol%, degree of polymerization: 1700) 0.3% by mass, styrene-acrylic based sizing agent (star light PMC Co., Ltd.) , A trade name: SE2018), and a size press coating solution containing 0.1% by mass of this coating solution is prepared using a size press coater, and the coating amount of polyvinyl alcohol is 0.05 g / m 2 per one side Both sides of the base paper were impregnated to obtain 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/m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/m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 changed to 0.5% by mass, and both sides of the base paper were impregnated so that the coated amount of polyvinyl alcohol was 0.13 g / m 2 per one side. In the same manner as in Example 1, a wallpaper backing paper with a basis weight of 67.5 g / m 2 was produced.

[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/m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/m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 changed to 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 one side. In the same manner as in Example 1, a wallpaper backing paper with a basis weight of 67.5 g / m 2 was produced.

[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/mの壁紙用裏打ち紙を製造した。
Example 4
In the same manner as in Example 1 except that calcined clay as filler and kaolin were added so as to have an ash content of 8.0% by mass, a backing paper for wallpaper having a basis weight of 67.1 g / m 2 was produced. .

[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/mの壁紙用裏打ち紙を製造した。
[Example 5]
In the same manner as in Example 1 except that the calcined clay and the kaolin as the filler were added so as to have an ash content of 15.0% by mass, a wallpaper backing paper with a basis weight of 67.2 g / m 2 was produced. .

[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/m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/m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 changed to 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 one side. In the same manner as in Example 4, a wallpaper backing paper with a basis weight of 67.5 g / m 2 was produced.

[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/m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/mの壁紙用裏打ち紙を製造した。
Comparative Example 1
The calcined clay and kaolin, which are fillers, are added so that the ash content is 12.6% by mass, and the polyvinyl alcohol in the size press coating solution is changed to 1.0% by mass, and the coating amount of polyvinyl alcohol is 0. A wallpaper backing paper with a basis weight 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 be 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/m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/mの壁紙用裏打ち紙を製造した。
Comparative Example 2
The calcined clay and kaolin, which are fillers, are added to have an ash content of 7.8% by mass, the polyvinyl alcohol in the size press coating solution is changed to 0.3% by mass, and the coating amount of polyvinyl alcohol is 0. other impregnated on both surfaces of the base paper so that the 05G / m 2, the same procedure as in example 1 to produce a wallpaper backing paper having a basis weight of 67.0 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/m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/mの壁紙用裏打ち紙を製造した。
Comparative Example 3
The example was carried out except that the polyvinyl alcohol in the size press coating solution was changed to 2.2% by mass and both sides of the base paper were impregnated so that the coated amount of polyvinyl alcohol was 0.55 g / m 2 per one side. In the same manner as in 1, a wallpaper backing paper with 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/m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/mの壁紙用裏打ち紙を製造した。
Comparative Example 4
The example was carried out except that the polyvinyl alcohol in the size press coating liquid was changed to 0.15% by mass and both sides of the base paper were impregnated so that the coated amount of polyvinyl alcohol was 0.025 g / m 2 per one side. In the same manner as in 1, a wallpaper backing paper with 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/mの壁紙用裏打ち紙を製造した。
Comparative Example 5
In the same manner as in Example 1 except that the calcined clay and the kaolin as the filler were added so as to have an ash content of 18.0% by mass, a wallpaper backing paper with a basis weight of 67.0 g / m 2 was produced. .

[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(クラレ(株)製 エバールHF−ME、厚み12μm)を用いて、樹脂密着性を評価した。
[Evaluation]
The ethylene-vinyl alcohol copolymer film (Kuraray Co., Ltd. Eval HF-ME, having an adhesive surface) for the wallpaper backing paper (Examples 1 to 6, Comparative Examples 1 to 5) manufactured as described above Resin adhesion was evaluated using 12 micrometers.

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/cm
・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, and heating is performed 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 apparatus: TP-701S manufactured by Tester Sangyo Co., Ltd.
・ Heating temperature: 115 ° C
・ Sealing 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°
Thereafter, 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 conditions)
・ Measuring device: ORIENTEC's Tensiron universal testing machine
(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 component (mainly pulp fiber) derived from backing paper adhering to the ethylene-vinyl alcohol copolymer film surface after peeling was subjected to image analysis under the following conditions to measure the area ratio.
(Image analysis condition)
・ Analyzer: Image analyzer (LUZEX SE) manufactured by Nireko Co., Ltd.
・ Measurement area: 8mm x 25mm

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 rates are shown in Table 1 below. Moreover, resin adhesiveness was evaluated by the following reference | standard, and the result was shown in the following Table 1. Moreover, the surface photograph of the ethylene-vinyl alcohol copolymer film after peeling in Example 1 and Comparative Examples 1-2 was shown in FIGS.
(Evaluation criteria for resin adhesion)
◎: The area ratio is in the range of 45% to 80%.
○: The area ratio is in the range of 35% or more and less than 45%.
Δ: 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。   On the backing paper for wallpaper of Examples 1 to 6 of the present invention, a resin film using a polyolefin resin and a non-foamed resin are laminated in this order by a calendar method, and then foaming treatment is performed by heating. When an olefin wallpaper was produced, the adhesion between the backing paper and the resin film was good, and it was further confirmed that the peelability was excellent when peeling the wallpaper from the wall surface.

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 backing paper for wallpaper of Examples 1 to 5 in which the area ratio is in the range of 35% to 80% has a good balance of adhesion between backing paper and resin film and peel aptitude, and a calendar for olefin wallpaper etc. 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 a non-foamed resin are laminated in this order on the backing paper for wallpaper of Comparative Examples 1 to 5 by a calendar method, and then foaming treatment by heating is performed to produce an olefin wallpaper. As a result, in Comparative Examples 1 to 3 the adhesion between the backing paper and the resin film is insufficient and peeling tends to occur, and in Comparative Examples 4 to 5, the adhesion between the backing paper and the resin film is too strong, and the wallpaper is peeled off the wall surface Peeling aptitude at the time 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 is excellent in adhesion to a non-foamed resin-coated resin film and non-foamed 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 a state of being used as a wallpaper and the like, and is excellent in peel aptitude when peeling the wallpaper from the wall surface, and can be used for various wallpaper production and the like.

Claims (3)

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において、
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/m〜0.2g/m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 backing paper comprising a base paper comprising at least a 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 a range of 8% by mass to 15% by mass,
The water-soluble polymer wallpaper backing sheet, characterized in that present in the range of per side 0.05g / m 2 ~0.2g / m 2 on the base paper.
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を特徴とする請求項1に記載の壁紙用裏打ち紙。   The paper for wallpaper according to claim 1, wherein the water-soluble polymer is polyvinyl alcohol and / or starch. 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した場合に、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%の範囲にある請求項1または請求項2に記載の壁紙用裏打ち紙。
(1)加熱温度:115℃
(2)シールバー幅:10mm
(3)押し付け圧:2.5kg/cm
(4)押し付け時間:30秒
(5)フィルム幅:25mm
The adhesive side of the ethylene-vinyl alcohol copolymer film having an adhesive side is brought into contact with the backing paper for wallpaper, heated and bonded under the following conditions (1) to (5), and cooled to room temperature. When the vinyl alcohol copolymer film and the backing paper for wallpaper are peeled off, the area ratio of fibers and fillers attached to the surface of the ethylene-vinyl alcohol copolymer film is in the range of 35% to 80%. Or backing paper for wallpaper according to claim 2.
(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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10310999A (en) * 1997-05-09 1998-11-24 Achilles Corp Wall paper made of vinyl chloride-based resin and backing paper for wallpaper made of vinyl chloride-based paper
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10310999A (en) * 1997-05-09 1998-11-24 Achilles Corp Wall paper made of vinyl chloride-based resin and backing paper for wallpaper made of vinyl chloride-based paper
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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