JP2013159861A - Flame-retardant nonwoven fabric - Google Patents
Flame-retardant nonwoven fabric Download PDFInfo
- Publication number
- JP2013159861A JP2013159861A JP2012020049A JP2012020049A JP2013159861A JP 2013159861 A JP2013159861 A JP 2013159861A JP 2012020049 A JP2012020049 A JP 2012020049A JP 2012020049 A JP2012020049 A JP 2012020049A JP 2013159861 A JP2013159861 A JP 2013159861A
- Authority
- JP
- Japan
- Prior art keywords
- flame retardant
- nonwoven fabric
- flame
- mass
- receiving layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003063 flame retardant Substances 0.000 title claims abstract description 272
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 265
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 167
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- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 description 1
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- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
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Images
Landscapes
- Chemical Or Physical Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
Description
本発明は、垂れ幕などバナー、ポスター、壁紙などの内装材として屋内で使用することのできる難燃性不織布に係り、特に、好適なインクジェット印刷適性をもった難燃性不織布に関する。 The present invention relates to a flame retardant nonwoven fabric that can be used indoors as an interior material such as a banner, poster, wallpaper, etc., and more particularly to a flame retardant nonwoven fabric having suitable ink jet printing suitability.
近年、インクジェットプリンタによる印刷は、ワイドフォーマットタイプのプリンタの普及により、製版工程を有するオフセット印刷と比べて少ない印刷部数に対応でき、低コストでの印刷が可能となっている。また、巾及び／又は長さが数メートルある懸垂幕や横断幕などの大型印刷物への印刷も可能となり、壁紙等の内装材、ポスターなど多くの用途に用いられている。このような大型印刷物に使用される印刷媒体としては、紙や樹脂シートなどと比べて軽量で可撓性が高く、耐久性に優れた不織布が用いられることが多い。 In recent years, printing by an ink jet printer can cope with a smaller number of copies compared to offset printing having a plate making process due to the widespread use of wide format type printers, and can be printed at low cost. Also, printing on large prints such as banners and banners with a width and / or length of several meters is possible, and it is used for many applications such as interior materials such as wallpaper and posters. As a printing medium used for such a large-sized printed material, a nonwoven fabric that is lightweight, highly flexible, and excellent in durability is often used as compared with paper and resin sheets.
垂れ幕、壁紙等の内装材、ポスターなどは、屋内での使用にあたって建造物の火災事故の防止のために消防法で定められた防炎性試験に合格することが必要となり、印刷媒体に用いる不織布にも難燃性を付与させる必要がある。不織布に難燃性を付与する方法としては、不織布を製造する段階で繊維自体に水酸化アルミニウムなどの無機系難燃剤を添加する方法や、完成品である不織布に含浸コータなどで難燃剤を含む含浸液を含浸させる方法などがある。 Interior materials such as banners and wallpaper, posters, etc. are required to pass a flameproof test stipulated by the Fire Service Act to prevent fire accidents in buildings when used indoors. It is also necessary to impart flame retardancy. As a method of imparting flame retardancy to the nonwoven fabric, a method of adding an inorganic flame retardant such as aluminum hydroxide to the fiber itself at the stage of manufacturing the nonwoven fabric, or a flame retardant containing an impregnated coater or the like to the finished nonwoven fabric There is a method of impregnating with an impregnating liquid.
また、これらの用途で用いられる不織布には、インクジェット記録適性を付与するために基材とする不織布表面にインク受理層を設けることがある。このようなインクジェット記録適性を付与された難燃性不織布として、特許文献１には、インク受理層に特定の難燃化剤を特定量含有させて難燃性を向上させる技術が開示されている。また特許文献２には、難燃化処理された基布に上部層と下部層からなるインク受理層を設け、下部層のインク受理層に難燃剤を含ませたインクジェット記録用布帛が開示されている。
In addition, the nonwoven fabric used in these applications may be provided with an ink receiving layer on the surface of the nonwoven fabric used as a base material in order to impart ink jet recording suitability. As a flame-retardant nonwoven fabric imparted with such ink jet recording suitability, Patent Document 1 discloses a technique for improving flame retardancy by containing a specific amount of a specific flame retardant in an ink receiving layer. .
しかしながら、特許文献１に記載された技術においては、インク受理層に配合された難燃剤が印刷性能に影響して印字滲みや印字ムラなどを引き起こすという問題があった。また、特許文献２に記載された技術では、上部層となるインク受理層には難燃剤が配合されていないものの下部層のインク受理層には難燃剤が配合されているため、この難燃剤がインクジェット記録適性に悪影響を及ぼす問題があり、加えて、２種類のインク受理層を設けるために製造コストが高くなるといった問題がある。このように特許文献１、特許文献２に記載の技術では、難燃性とインクジェット記録適性とを両立するのは困難であった。
However, in the technique described in Patent Document 1, there is a problem that the flame retardant blended in the ink receiving layer affects printing performance and causes printing bleeding and printing unevenness. In addition, in the technique described in
また、難燃剤による印刷性能の低下を防ぐために不織布基材に難燃剤を含まないインク受理層を設けた場合には、難燃剤を含んだインク受理層を設けた場合と比べて難燃性不織布全体としての難燃性は低下する。そのため、難燃剤を含まないインク受理層を設けた上で難燃性不織布全体として消防法で定められた防炎性試験に合格するレベルの難燃性を得るためには、難燃処理を施した繊維からなる不織布を基材として用いるなど、不織布基材自体に高度な難燃性を持たせる必要がある。 In addition, when an ink receiving layer that does not contain a flame retardant is provided on the nonwoven fabric base material in order to prevent deterioration in printing performance due to the flame retardant, the flame retardant nonwoven fabric is compared to the case where an ink receiving layer that contains a flame retardant is provided. The overall flame retardancy is reduced. For this reason, in order to obtain a flame retardant level that passes the flame retardant test stipulated by the Fire Service Act as a whole flame retardant nonwoven fabric after providing an ink receiving layer that does not contain a flame retardant, flame retardant treatment is applied. It is necessary to give the non-woven fabric base material itself high flame retardancy, such as using a non-woven fabric made of the prepared fibers as the base material.
しかしながら、難燃処理を施した繊維からなる不織布は高価であり、このような不織布を使用すると製造コストが嵩むという問題がある。不織布基材に難燃性を付与する方法としては、他にも前述した難燃剤を含む含浸液を不織布に含浸させる方法があり、こちらの方法を用いれば難燃性の繊維を用いた不織布を使用する場合と比べて製造コストは比較的安価に抑えることができるが、このようにして得られた不織布基材に難燃剤を含まないインク受理層を設けた難燃性不織布は難燃性に劣り、消防法に定められた防炎性試験に合格するレベルの難燃性を得ることは困難であった。また、不織布自体が密度のバラツキが多いものであるため、含浸液の浸透量にバラツキが生じ含浸ムラが起こりやすいという問題点もあった。 However, a nonwoven fabric made of a fiber subjected to a flame retardant treatment is expensive, and there is a problem that the production cost increases when such a nonwoven fabric is used. As another method for imparting flame retardancy to a nonwoven fabric substrate, there is a method of impregnating a nonwoven fabric with an impregnation liquid containing a flame retardant as described above. If this method is used, a nonwoven fabric using flame retardant fibers can be obtained. The production cost can be kept relatively low compared to the case of using it, but the flame retardant nonwoven fabric provided with an ink-receiving layer that does not contain a flame retardant on the nonwoven fabric substrate thus obtained is flame retardant. Inferior, it was difficult to obtain a flame retardance level that passed the flameproof test stipulated in the Fire Service Law. Further, since the nonwoven fabric itself has a large variation in density, there is also a problem that the impregnation liquid has a variation in the amount of impregnation and the impregnation unevenness is likely to occur.
本発明はこのような問題を鑑みてなされたものであり、その目的とするところは、難燃処理を施していない繊維からなる不織布を用いた場合であっても、消防法で定められた防炎性試験に合格するレベルの難燃性と、インクジェット記録適性とを有する難燃性不織布を提供することにある。 The present invention has been made in view of such a problem, and the object of the present invention is to prevent damages stipulated by the Fire Service Law even when a nonwoven fabric made of fibers not subjected to flame retardant treatment is used. An object of the present invention is to provide a flame retardant nonwoven fabric having a flame retardance level that passes a flame test and ink jet recording suitability.
本発明の他の目的並びに作用効果については、本明細書の以下の記述を参照することにより、当業者であれば容易に理解されるであろう。 Other objects and effects of the present invention will be easily understood by those skilled in the art by referring to the following description of the present specification.
上述の目的を達成するために、本発明の難燃性不織布は、難燃化処理を施されていない繊維からなる不織布に難燃剤を均一に浸透させることにより高度な難燃性を付与し、更に、難燃剤を含まないインクジェット受理層を設けた場合であっても、消防法で定められた防炎性試験に合格するレベルの難燃性を担持させるものである。 In order to achieve the above-mentioned object, the flame retardant nonwoven fabric of the present invention imparts high flame retardancy by uniformly infiltrating a flame retardant into a nonwoven fabric composed of fibers that have not been subjected to flame retardant treatment, Furthermore, even when an ink jet receiving layer that does not contain a flame retardant is provided, it has a level of flame retardant that passes a flameproof test stipulated by the Fire Service Act.
具体的には、本発明の難燃性不織布は、難燃不織布基材の少なくとも一方の面にインク受理層を設けてなるものであり、難燃不織布基材は、難燃処理のなされていない繊維からなる不織布に難燃性含浸液を不織布１００質量部に対して１５質量部以上含浸させたものであり、前記難燃性含浸液は、難燃剤と、難燃剤１００質量部に対して固形分換算で０．５〜１０質量部の浸透剤を含み、前記浸透剤は、下記Ａ群から１種又は２種以上を用いるものであり、前記インク受理層は、無機顔料及びバインダを含み、固形分換算で片面当たり６〜２５ｇ／ｍ2の範囲で設けられ、ＪＩＳ Ｌ１０９１ Ａ−１法による残炎時間が３秒以下、残じん時間が５秒以下、燃焼面積が３０ｃｍ2以下である。
（Ａ群：イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテル）
Specifically, the flame retardant nonwoven fabric of the present invention is formed by providing an ink receiving layer on at least one surface of a flame retardant nonwoven fabric substrate, and the flame retardant nonwoven fabric substrate is not subjected to a flame retardant treatment. A nonwoven fabric composed of fibers is impregnated with 15 parts by mass or more of a flame retardant impregnating liquid with respect to 100 parts by mass of the nonwoven fabric. The flame retardant impregnating liquid is solid with respect to the flame retardant and 100 parts by mass of the flame retardant. The penetrant contains 0.5 to 10 parts by mass of a penetrant in terms of minutes, and the penetrant uses one or more from group A below, and the ink receiving layer contains an inorganic pigment and a binder, It is provided in the range of 6 to 25 g / m 2 per side in terms of solid content, and has a residual flame time of 3 seconds or less, a residual dust time of 5 seconds or less, and a combustion area of 30 cm 2 or less according to JIS L1091 A-1.
(Group A: isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene lauryl ether, polyoxyalkylene Alkyl ether, polyoxyethylene alkyl ether)
ここで、難燃性の評価基準としてＪＩＳ Ｌ１０９１ Ａ−１法による基準を採用しているのは、ＪＩＳ Ｌ１０９１ Ａ−１法では試験条件と評価基準が詳細に設定されており、また同基準の区分３を満足するものであれば消防法に定められている防炎基準は満足されるためである。なお、残炎時間３秒以下、残じん時間５秒以下、燃焼面積３０ｃｍ2以下という条件は、同基準の区分３（合格基準）に相当する。 Here, the standard based on the JIS L1091 A-1 method is adopted as the flame retardant evaluation standard because the test conditions and the evaluation standard are set in detail in the JIS L1091 A-1 method. This is because the flame proof standard stipulated in the Fire Service Law is satisfied if it satisfies Category 3. The conditions that the after flame time is 3 seconds or less, the residual dust time is 5 seconds or less, and the combustion area is 30 cm 2 or less correspond to Category 3 (acceptance criteria) of the same standard.
そして、このような構成によれば、浸透剤により不織布に難燃剤をムラなく均一に含浸させることができ、難燃不織布基材が高度な難燃性を有するものとなる。このため、難燃不織布基材上に難燃剤を含まないインク受理層を設けても、難燃性不織布全体としては高い難燃性が得られ消防法で定められた防炎性試験に合格するレベルの難燃性不織布とすることができる。また、インク受理層には難燃剤が含まれていないため、難燃剤によりインク受理性が阻害されてインクジェット記録適性の低下をもたらす虞がなく、インクジェット記録適性に優れた難燃性不織布となる。 And according to such a structure, a flame retardant can be uniformly impregnated to a nonwoven fabric uniformly by a osmotic agent, and a flame-retardant nonwoven fabric base material has high flame retardance. For this reason, even if an ink receiving layer that does not contain a flame retardant is provided on a flame retardant nonwoven fabric substrate, the flame retardant nonwoven fabric as a whole has high flame retardancy and passes the flame retardant test defined by the Fire Service Act. A flame retardant nonwoven fabric of a level can be obtained. Further, since the ink receiving layer does not contain a flame retardant, there is no possibility that the ink acceptability is hindered by the flame retardant and the ink jet recording suitability is deteriorated, and the flame retardant nonwoven fabric is excellent in ink jet recording suitability.
本発明の好ましい実施の形態においては、前記浸透剤は、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンアルキルエーテルの中から選ばれた１種又は２種以上であってもよい。このような構成によれば、難燃性含浸液が不織布にムラなく均一に浸透し、良好な難燃性を有する難燃性不織布が得られる。 In a preferred embodiment of the present invention, the penetrant may be one or more selected from monoalkyl ammonium chloride, polyoxyalkylene branched decyl ether, and polyoxyethylene alkyl ether. According to such a configuration, the flame retardant impregnating solution uniformly penetrates the nonwoven fabric uniformly, and a flame retardant nonwoven fabric having good flame retardancy is obtained.
本発明の好ましい実施の形態においては、前記難燃剤はノンハロゲン系難燃剤であり、リン系化合物もしくはリン系有機化合物を含むものであってもよい。このような構成によれば、焼却処分をする際などで不織布を燃焼させてもダイオキシン等の有害物が発生しにくい難燃性不織布が得られる。 In a preferred embodiment of the present invention, the flame retardant is a non-halogen flame retardant and may contain a phosphorus compound or a phosphorus organic compound. According to such a configuration, a flame retardant nonwoven fabric that hardly generates harmful substances such as dioxin even when the nonwoven fabric is burned at the time of incineration is obtained.
本発明の好ましい実施の形態においては、前記インク受理層において、バインダは無機顔料１００質量部に対して２０〜８０質量部の範囲で配合されるものであってもよい。このような構成によれば、インクジェット記録適性及び塗工層強度に優れるインク受理層を設けた難燃性不織布とすることができる。 In preferable embodiment of this invention, in the said ink receiving layer, a binder may be mix | blended in 20-80 mass parts with respect to 100 mass parts of inorganic pigments. According to such a structure, it can be set as the flame-retardant nonwoven fabric which provided the ink receiving layer excellent in inkjet recording suitability and coating layer intensity | strength.
本発明の好ましい実施の形態においては、前記インク受理層には、カチオン性高分子を含むインク定着剤が無機顔料１００質量部に対して５〜４０質量部の範囲で含まれていてもよい。このような構成によれば、インクジェットインクの定着性と発色性が向上し、より優れたインクジェット印刷適性を有する難燃性不織布が得られる。 In a preferred embodiment of the present invention, the ink receiving layer may contain an ink fixing agent containing a cationic polymer in a range of 5 to 40 parts by mass with respect to 100 parts by mass of the inorganic pigment. According to such a configuration, the fixability and color developability of the ink-jet ink are improved, and a flame-retardant nonwoven fabric having better ink-jet printability can be obtained.
また、本発明の他の実施の形態においては、前記インク受理層と難燃不織布基材との間、及び／又は前記難燃不織布基材のインク受理層を設けてない側の面上に、ノンハロゲン系難燃剤を含む難燃塗工層を固形分換算で片面当たり３〜１０ｇ／ｍ2の範囲で設けてもよい。このような構成によれば、難燃性不織布全体としてより高い難燃性が得られる。 Further, in another embodiment of the present invention, between the ink receiving layer and the flame retardant nonwoven fabric substrate and / or on the surface of the flame retardant nonwoven fabric substrate on which the ink receiving layer is not provided, You may provide the flame-resistant coating layer containing a non-halogen-type flame retardant in the range of 3-10 g / m < 2 > per single side in conversion of solid content. According to such a configuration, higher flame retardancy can be obtained as a whole of the flame retardant nonwoven fabric.
本発明の好ましい実施の形態においては、前記インク受理層に含まれる無機顔料は、シリカであってもよい。このような構成によれば、インク受理層がよりインク吸収性に優れたものとなる。 In a preferred embodiment of the present invention, the inorganic pigment contained in the ink receiving layer may be silica. According to such a configuration, the ink receiving layer is more excellent in ink absorbability.
本発明の好ましい実施の形態においては、前記不織布はポリエチレン繊維又はポリエステル繊維からなるものであってもよい。このような構成によれば、強度や耐久性に優れた難燃性不織布が得られる。 In preferable embodiment of this invention, the said nonwoven fabric may consist of a polyethylene fiber or a polyester fiber. According to such a configuration, a flame-retardant nonwoven fabric excellent in strength and durability can be obtained.
また本発明は、難燃性不織布の製造方法としても捉えることが出来る。本発明に係る難燃性不織布の製造方法は、難燃剤と、難燃剤１００質量部に対して固形分換算で０．５〜１０質量部の浸透剤を用いて難燃性含浸液を調製する難燃性含浸液調製ステップと、前記難燃性含浸液を不織布に、不織布１００質量部に対して１５質量部以上含まれるよう含浸させて難燃織布基材を作る難燃不織布基材製造ステップと、無機顔料とバインダと水を用いてインク受理層用塗布液を調製するインク受理層用塗布液調製ステップと、前記難燃不織布基材の少なくとも一方の面に前記インク受理層用塗布液を塗布し、固形分換算で片面当たり６〜２５ｇ／ｍ2の範囲となるようにインク受理層を設けるインク受理層塗布ステップと、を有するものである。 Moreover, this invention can also be caught as a manufacturing method of a flame-retardant nonwoven fabric. The manufacturing method of the flame-retardant nonwoven fabric which concerns on this invention prepares a flame-retardant impregnation liquid using a flame retardant and 0.5-10 mass parts penetrant in conversion of solid content with respect to 100 mass parts of flame retardants. A flame retardant impregnating liquid preparation step, and a flame retardant nonwoven fabric base material manufacturing method in which the flame retardant impregnating liquid is impregnated into a nonwoven fabric so as to contain 15 parts by mass or more with respect to 100 parts by mass of the nonwoven fabric. A step of preparing an ink-receiving layer coating solution using an inorganic pigment, a binder, and water; and the ink-receiving layer coating solution on at least one surface of the flame-retardant nonwoven fabric substrate And an ink receiving layer coating step in which an ink receiving layer is provided so as to be in the range of 6 to 25 g / m 2 per side in terms of solid content.
また、前記浸透剤は、下記Ａ群から１種又は２種以上を用いるものであり、ＪＩＳ Ｌ１０９１ Ａ−１法による残炎時間が３秒以下、残じん時間が５秒以下、燃焼面積が３０ｃｍ2以下である。
（Ａ群：イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテル）
Moreover, the said penetrant uses 1 type (s) or 2 or more types from the following A group, the afterflame time by JISL1091 A-1 method is 3 second or less, the residual dust time is 5 second or less, and a combustion area is 30 cm. 2 or less.
(Group A: isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene lauryl ether, polyoxyalkylene Alkyl ether, polyoxyethylene alkyl ether)
そして、このような構成によれば、不織布に難燃剤を均一に含浸することができ、安定した難燃性を有する難燃性不織布を製造することが出来る。加えて、インク受理層には難燃剤が含まれていないためインク受理性が阻害されず、優れたインクジェット記録適性が得られる。 And according to such a structure, a flame retardant can be uniformly impregnated in a nonwoven fabric and the flame-retardant nonwoven fabric which has the stable flame retardance can be manufactured. In addition, since the ink receiving layer does not contain a flame retardant, ink acceptability is not hindered and excellent ink jet recording suitability can be obtained.
以上の説明で明らかなように、本発明の難燃性不織布は、難燃不織布基材に難燃剤がムラなく均一に含浸されていることから難燃不織布基材が高度な難燃性を有するものとなり、難燃不織布基材上に難燃剤を含まないインク受理層を設けても難燃性不織布全体としては高い難燃性が得られ、消防法で定められた防炎性試験に合格するレベルの難燃性不織布とすることができる。また、インク受理層には難燃剤が含まれていないために難燃剤によりインク受理性が阻害されることがなく、インクジェット記録適性にも優れたものとなる。 As is clear from the above description, the flame retardant nonwoven fabric of the present invention has a highly flame retardant nonwoven base material because the flame retardant nonwoven fabric base material is uniformly impregnated with a flame retardant. Even if an ink-receiving layer that does not contain a flame retardant is provided on the flame retardant nonwoven fabric substrate, the flame retardant nonwoven fabric as a whole has high flame retardancy and passes the flame proof test stipulated by the Fire Service Act. A flame retardant nonwoven fabric of a level can be obtained. Further, since the ink receiving layer does not contain a flame retardant, the ink acceptability is not hindered by the flame retardant, and the ink jet recording suitability is excellent.
以下、本発明について説明するが、本発明はこれらの実施形態に限定して解釈されるものではない。 Hereinafter, the present invention will be described, but the present invention is not construed as being limited to these embodiments.
本発明の難燃性不織布は、難燃不織布基材の少なくとも一方の面にインク受理層を設けてなるものであり、難燃不織布基材は、難燃処理のなされていない繊維からなる不織布に難燃性含浸液を不織布１００質量部に対して１５質量部以上含浸させたものであり、前記難燃性含浸液は、難燃剤と、難燃剤１００質量部に対して固形分換算で０．５〜１０質量部の浸透剤を含み、前記浸透剤は、下記Ａ群から１種又は２種以上を用いるものであり、前記インク受理層は、無機顔料及びバインダを含み、固形分換算で片面当たり６〜２５ｇ／ｍ2の範囲で設けられ、ＪＩＳ Ｌ１０９１ Ａ−１法による残炎時間が３秒以下、残じん時間が５秒以下、燃焼面積が３０ｃｍ2以下であることを特徴とするものである。
（Ａ群：イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテル）
The flame-retardant nonwoven fabric of the present invention is an ink-receiving layer provided on at least one surface of a flame-retardant nonwoven fabric substrate, and the flame-retardant nonwoven fabric substrate is a nonwoven fabric made of fibers that have not been subjected to flame-retardant treatment. The flame retardant impregnating liquid is impregnated with 15 parts by mass or more with respect to 100 parts by mass of the nonwoven fabric, and the flame retardant impregnating liquid has a flame retardant of 0.1 parts in terms of solid content with respect to 100 parts by mass of the flame retardant. 5 to 10 parts by mass of a penetrant, and the penetrant uses one or more from the following group A, and the ink receiving layer contains an inorganic pigment and a binder, and is converted to a solid content on one side. It is provided in the range of 6 to 25 g / m 2 , and has a residual flame time of 3 seconds or less, a residual time of 5 seconds or less, and a combustion area of 30 cm 2 or less according to JIS L1091 A-1 method. It is.
(Group A: isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene lauryl ether, polyoxyalkylene Alkyl ether, polyoxyethylene alkyl ether)
先にも述べたように、本発明に係る難燃性不織布は、難燃性能乃至防炎性能において消防法の基準を満たすことを目的の一つとしている。
ここで、消防法施行規則について説明する。
消防法で防炎性能を有するカーテン、じゅうたん等防炎物品の使用が義務付けられている防火対象物として代表なものを記載する。
消防法第８条の３第１項 高層建築物（３１ｍを超える建物）、地下街
消防法施行令 別表第一（１）イ…劇場、映画館、演劇場 ロ…集会場
（２）イ…カフェなど ロ…遊技場など ニ…カラオケボックスなど
（３）イ…待合、料理店など ロ…飲食店
（４）百貨店、マーケットなど
（５）イ…旅館、ホテルなど
（６ イ…病院など ロ…養護老人ホームなど ハ…養護老人ホーム
（９）イ…公衆浴場のうち蒸気浴場、熱気浴場など
（１２）ロ…映画又はテレビスタジオ
As described above, the flame-retardant nonwoven fabric according to the present invention has an object of satisfying the standards of the Fire Service Act in terms of flame-retardant performance or flame-proof performance.
Here, the Fire Service Act enforcement regulations are explained.
List typical fire prevention objects that require the use of flameproof articles such as curtains and carpets that have flameproof performance under the Fire Service Act.
Article 8-3, Section 1 of the Fire Service Law High-rise buildings (buildings over 31m), underground shopping mall Fire Service Law Enforcement Order Appendix 1 (1) A ... Theater, Movie Theater, Theater B
(2) B ... Café, etc. B ... Amusement park, etc. D ... Karaoke box, etc.
(3) B ... Waiting, restaurants, etc. B ... Restaurant
(4) Department stores, markets, etc.
(5) B ... Inns, hotels, etc.
(6 B ... Hospital etc. B ... Nursing home for the elderly C ... Nursing home for the elderly
(9) B ... Steam bath, hot air bath, etc. among public baths
(12) B ... Movie or TV studio
次に消防法第８条の３第１項で記載されている防炎対象物品を記載する。
１ カーテン
２ 布製のブラインド
３ 暗幕
４ じゅうたん等
５ 展示用の合板
６ どん帳その他舞台において使用する幕
７ 舞台において使用する大道具用の合板
８ 工事用シート（網目１２ｍｍ以下）
Next, the articles subject to flame protection described in Article 8-3, Paragraph 1 of the Fire Service Act are described.
DESCRIPTION OF SYMBOLS 1
次に消防法の燃焼試験方法について代表なものを記載する。
４５°ミクロバーナー法、４５°メッケルバーナー法、４５°たるませ法、４５°コイル法、４５°エアーミックスバーナー法
Next, representative examples of the combustion test method of the Fire Service Act are described.
45 ° micro burner method, 45 ° Meckel burner method, 45 ° sagging method, 45 ° coil method, 45 ° air mix burner method
本発明の難燃性不織布は、カーテン、布製ブラインド、工事用シート、薄手布で着炎する物に該当し、更に物品質量が４５０ｇ／ｍ2以下であるため、炎の長さが４５ｍｍで加熱時間が１分の条件の評価に該当する。本発明において難燃性の評価を行うに際しては、試験条件と評価基準が詳細に設定されているＪＩＳ Ｌ１０９１ Ａ−１法による評価を行う。これは、同基準の区分３を満足するものであれば消防法に定められている防炎基準は満足されるためである。なお、残炎時間３秒以下、残じん時間５秒以下、燃焼面積３０ｃｍ2以下という条件は、同基準の区分３（合格基準）に相当する。 The flame-retardant nonwoven fabric of the present invention corresponds to a material that is flared by a curtain, a cloth blind, a construction sheet, or a thin cloth. Further, since the mass of the article is 450 g / m 2 or less, the flame length is heated at 45 mm. Time corresponds to an evaluation of 1 minute. In evaluating the flame retardancy in the present invention, the evaluation is performed by the JIS L1091 A-1 method in which test conditions and evaluation criteria are set in detail. This is because the flameproof standard defined in the Fire Service Act is satisfied if it satisfies Category 3 of the same standard. The conditions that the after flame time is 3 seconds or less, the residual dust time is 5 seconds or less, and the combustion area is 30 cm 2 or less correspond to Category 3 (acceptance criteria) of the same standard.
本発明において難燃不織布基材に用いる不織布としては、難燃処理のなされていない繊維からなる不織布を用いる。不織布を構成する繊維としては、羊毛やコットンなどの天然繊維、レーヨンやアセテートなどの化学繊維、ポリオレフィンやポリエステルなどの合成繊維、などの繊維から構成されているものを用いることができるが、これらの中でも強度や耐久性の点からポリエチレン繊維又はポリエステル繊維からなる不織布を使用することが好ましい。 In the present invention, as the nonwoven fabric used for the flame retardant nonwoven fabric substrate, a nonwoven fabric made of fibers not subjected to flame retardant treatment is used. As the fiber constituting the nonwoven fabric, natural fibers such as wool and cotton, chemical fibers such as rayon and acetate, synthetic fibers such as polyolefin and polyester, and the like can be used. Among these, it is preferable to use a nonwoven fabric made of polyethylene fiber or polyester fiber from the viewpoint of strength and durability.
本発明において難燃性含浸液に用いる難燃剤としては、特に限定するものではなく、公知の難燃剤を用いることが可能である。しかしながら、臭素、塩素などのハロゲン化合物からなる難燃剤は、燃焼条件によってはダイオキシン等の有害物を発生する可能性がある為、ノンハロゲン系難燃剤を使用することが好ましい。 In the present invention, the flame retardant used in the flame retardant impregnation liquid is not particularly limited, and a known flame retardant can be used. However, flame retardants composed of halogen compounds such as bromine and chlorine may generate harmful substances such as dioxins depending on the combustion conditions, so it is preferable to use non-halogen flame retardants.
ノンハロゲン系難燃剤としては、市販されている無機系の難燃剤や、リンおよび／または窒素含有の有機系の難燃剤を用いることが可能である。これらの難燃剤としては、水酸化マグネシウム、水酸化アルミニウム等の金属水酸化物、三酸化アンチモン、酸化ジルコニウム、亜リン酸アルミニウム等の金属酸化物、ホウ酸、ホウ酸亜鉛などのホウ素系化合物、ポリリン酸、ポリリン酸アンモニウム、アミノ基変性リン酸エステル、又は水酸基含有リン酸エステル等のリン系化合物、メラミン又はメラミンシアヌレート化合物、メラミンリン酸塩、メラミンボレート等のメラミン系誘導体、グアニジン若しくはスルファミン酸グアニジン、リン酸グアニジン等のグアニジン系誘導体などのリンおよび／または窒素含有化合物など挙げられる。これらのノンハロゲン系難燃性化合物は、単独又は２種以上組み合わせて用いることが可能である。 As the non-halogen flame retardant, commercially available inorganic flame retardants and organic flame retardants containing phosphorus and / or nitrogen can be used. These flame retardants include metal hydroxides such as magnesium hydroxide and aluminum hydroxide, metal oxides such as antimony trioxide, zirconium oxide and aluminum phosphite, boron compounds such as boric acid and zinc borate, Phosphorus compounds such as polyphosphoric acid, ammonium polyphosphate, amino group-modified phosphate esters, or hydroxyl group-containing phosphate esters, melamine or melamine cyanurate compounds, melamine derivatives such as melamine phosphate and melamine borate, guanidine or sulfamic acid Examples include phosphorus and / or nitrogen-containing compounds such as guanidine derivatives such as guanidine and guanidine phosphate. These non-halogen flame retardant compounds can be used alone or in combination of two or more.
本発明において難燃性含浸液に用いる浸透剤としては、イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテルなどを用いることができるが、これら例示化合物に限定されるものではない。なお、上述のものの中では、水との相溶性が高いことから、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンアルキルエーテルが好ましい。 Examples of penetrants used in the flame-retardant impregnation liquid in the present invention include isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene Glycol, polyoxyethylene lauryl ether, polyoxyalkylene alkyl ether, polyoxyethylene alkyl ether, and the like can be used, but are not limited to these exemplified compounds. Of the above, monoalkyl ammonium chloride, polyoxyalkylene branched decyl ether, and polyoxyethylene alkyl ether are preferred because of their high compatibility with water.
また、これらの浸透剤は水に可溶で、且つＨＬＢ値（界面活性剤の水と油への親和性の程度を表す値。ＨＬＢとはＨｙｄｒｏｐｈｉｌｅ−Ｌｉｐｏｐｈｉｌｅ Ｂａｌａｎｃｅの頭文字）が１０以上であるものを使用することが好ましい。 These penetrants are soluble in water and have an HLB value (a value representing the degree of affinity of a surfactant to water and oil. HLB is an acronym for Hydrophile-Lipophile Balance) of 10 or more. It is preferable to use one.
前記難燃性含浸液における浸透剤の含有量は、固形分換算で難燃剤１００質量部に対し、０．５〜１０質量部とすることが好ましく、１〜３質量部とすればより好ましい。浸透剤の配合量が０．５質量部未満だと浸透剤が効力を発揮するのに十分な量ではないため密度のバラツキが大きい不織布において含浸ムラが多くなり、含浸液を均一に浸透させることができない。逆に、浸透剤の配合量が１０質量部を超えると、使用量に見合うだけの効果が期待できないことに加えてコスト増加にも繋がる。 The content of the penetrant in the flame retardant impregnating liquid is preferably 0.5 to 10 parts by mass and more preferably 1 to 3 parts by mass with respect to 100 parts by mass of the flame retardant in terms of solid content. If the blending amount of the penetrant is less than 0.5 parts by mass, the penetrant is not sufficient to exert its effect, so the non-uniformity of the non-woven fabric having a large density variation increases, and the impregnation liquid is allowed to penetrate uniformly. I can't. On the contrary, when the blending amount of the penetrant exceeds 10 parts by mass, an effect corresponding to the amount of use cannot be expected, and the cost is increased.
また、本発明において不織布に含浸させる難燃性含浸液は、不織布１００質量部に対して、含浸液に含まれる難燃剤が固形分換算で１５質量部以上となるように含浸させ、より好ましくは１８質量部以上とする。難燃剤の含浸量が１５質量部未満であると目的とする難燃性能が得られず、消防法やＪＩＳ Ｌ１０９１ Ａ−１法における区分３の条件を満たすことができない。なお、不織布への難燃剤の含浸量の上限については特に限定するものではないが、難燃剤の含浸量が不織布１００質量部に対して３０質量部を超えても使用量に見合うだけの効果が期待できず、経済的にも不利であるため、３０質量部以下とすることが望ましい。 Further, in the present invention, the flame retardant impregnating liquid impregnated into the nonwoven fabric is impregnated so that the flame retardant contained in the impregnating liquid is 15 parts by mass or more in terms of solid content with respect to 100 parts by mass of the nonwoven fabric, more preferably 18 parts by mass or more. If the impregnation amount of the flame retardant is less than 15 parts by mass, the intended flame retardant performance cannot be obtained, and the conditions of Category 3 in the Fire Service Act and JIS L1091 A-1 method cannot be satisfied. The upper limit of the amount of flame retardant impregnated into the nonwoven fabric is not particularly limited, but even if the amount of flame retardant impregnated exceeds 30 parts by mass with respect to 100 parts by mass of the nonwoven fabric, there is an effect that is commensurate with the amount used. Since it cannot be expected and is economically disadvantageous, it is desirable that the amount be 30 parts by mass or less.
ここで、不織布への難燃性含浸液の含浸方法については特に限定するものではなく、公知の含浸方法を用いることが可能であり、サイズプレスコータや含浸コータを用いることができる。 Here, the impregnation method of the flame retardant impregnation liquid into the nonwoven fabric is not particularly limited, and a known impregnation method can be used, and a size press coater or an impregnation coater can be used.
先にも述べたように、本発明の難燃性不織布においては、難燃不織布基材の少なくとも一方の面にインク受理層を設けるものである。 As described above, in the flame retardant nonwoven fabric of the present invention, an ink receiving layer is provided on at least one surface of the flame retardant nonwoven fabric substrate.
本発明においてインク受理層に用いる無機顔料は特に限定するものではなく、インクジェット印刷を目的としたインク受理層に用いられる公知の無機顔料を用いることができる。このような無機顔料としては、例えば、合成非晶質シリカ、焼成クレー、コロイダルシリカ、コロイダルアルミナ、擬ベーマイト、アルミナ、リトポン、加水ハロイサイト、炭酸マグネシウム、珪酸アルミニウム、ケイソウ土、珪酸カルシウム、珪酸マグネシウム、軽質炭酸カルシウム、重質炭酸カルシウム、カオリン、タルク、硫酸カルシウム、硫酸バリウム、二酸化チタン、酸化亜鉛、硫化亜鉛、炭酸亜鉛、サチンホワイト等の白色無機顔料などを例示することができる。インク吸収性に着目した場合には、高いインク吸収性の点から合成シリカを用いることが好ましい。また、本発明の目的を損なわない範囲であれば、少量の有機顔料を用いることも可能である。 In the present invention, the inorganic pigment used in the ink receiving layer is not particularly limited, and a known inorganic pigment used in the ink receiving layer for ink jet printing can be used. Examples of such inorganic pigments include synthetic amorphous silica, calcined clay, colloidal silica, colloidal alumina, pseudoboehmite, alumina, lithopone, hydrous halloysite, magnesium carbonate, aluminum silicate, diatomaceous earth, calcium silicate, magnesium silicate, Examples thereof include white inorganic pigments such as light calcium carbonate, heavy calcium carbonate, kaolin, talc, calcium sulfate, barium sulfate, titanium dioxide, zinc oxide, zinc sulfide, zinc carbonate, and satin white. When attention is paid to ink absorbability, it is preferable to use synthetic silica from the viewpoint of high ink absorbability. In addition, a small amount of an organic pigment can be used as long as the object of the present invention is not impaired.
本発明において、インク受理層に用いるバインダは特に限定するものではなく、インクジェット印刷を目的としたインク受理層に用いられる公知のバインダを用いることができる。このようなバインダとしては、例えば、ポリビニルアルコール、ポリエチレン酢酸ビニル、変性ポリビニルアルコール、ヒドロキシエチルセルロース、カルボキシメチルセルロース等のセルロース誘導体、ポリビニルピロリドン、ポリビニルピリジン、ポリアクリルアミド、ポリエチレンオキサイド、ポリプロピレンオキサイド、でんぷん、変性でんぷん、ポリアクリル酸、ポリアクリル酸ソーダ、アルギン酸ソーダ、ポリスチレンスルホン酸ソーダ、カゼイン、ゼラチン、テルペン等の水溶性バインダー、ポリエチレン、ポリプロピレン、ポリイソブチレン、ポリスチレン、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリ酢酸ビニル、ポリビニルアセタール、ポリアクリルアミド、ポリアクリル酸エチル、ポリメタクリル酸メチル、ポリアクリロニトリル、ポリテトラフルオロエチレン、ポリ弗化ビニリデン、ポリブタジエン、ポリイソプレン、ポリクロロプレン、ナイロン、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリカーボネート、ポリアセタール、ポリビスクロロメチルオキサシクロブタン、ポリフェニレンオキサイド、ポリスルフォン、ポリ−ｐ−キシリレン、ポリイミド、ポリベンズイミダゾール、フェノール樹脂、尿素樹脂、メラミン樹脂、エポキシ樹脂、アルキド樹脂、不飽和ポリエステル樹脂、ジアリルフタレート樹脂、スチレン−ブタジエン共重合体、変性スチレン−ブタジエン共重合体、アクリロニトリル−ブタジエン共重合体、メチルメタアクリレート−ブタジエン共重合体、アクリル酸エステル−メタアクリル酸エステル共重合体、酢酸ビニル−マレイン酸エステル共重合体、酢酸ビニル−アクリル共重合体、エチレン−酢酸ビニル−アクリル共重合体等のエマルジョン型バインダ又はエマルジョン型であるウレタン樹脂バインダなどを用いることができる。これらのバインダの中で、インクジェット印刷適性や創業性の観点からはポリビニルアルコールが好ましい。なお、これらのバインダの重合度、ケン化度、Ｔｇ（ガラス転移温度）、ＭＦＴ（最低造膜温度）などは、限定されず、また、これらの分子鎖中に架橋性の官能基を付加しても構わない。 In the present invention, the binder used for the ink receiving layer is not particularly limited, and a known binder used for the ink receiving layer for ink jet printing can be used. Examples of such a binder include cellulose derivatives such as polyvinyl alcohol, polyethylene vinyl acetate, modified polyvinyl alcohol, hydroxyethyl cellulose, carboxymethyl cellulose, polyvinyl pyrrolidone, polyvinyl pyridine, polyacrylamide, polyethylene oxide, polypropylene oxide, starch, modified starch, Polyacrylic acid, sodium polyacrylate, sodium alginate, polystyrene sulfonate sodium, casein, gelatin, terpene and other water-soluble binders, polyethylene, polypropylene, polyisobutylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, polyvinyl acetate, polyvinyl Acetal, polyacrylamide, polyethyl acrylate, polymethyl methacrylate, polyactyl Ronitrile, polytetrafluoroethylene, polyvinylidene fluoride, polybutadiene, polyisoprene, polychloroprene, nylon, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyacetal, polybischloromethyloxacyclobutane, polyphenylene oxide, polysulfone, poly-p- Xylylene, polyimide, polybenzimidazole, phenol resin, urea resin, melamine resin, epoxy resin, alkyd resin, unsaturated polyester resin, diallyl phthalate resin, styrene-butadiene copolymer, modified styrene-butadiene copolymer, acrylonitrile-butadiene Copolymer, methyl methacrylate-butadiene copolymer, acrylic ester-methacrylic ester copolymer, Vinyl acid - maleic acid ester copolymer, vinyl acetate - acrylic copolymer, ethylene - vinyl acetate - such as urethane resin binder is an emulsion-type binder or an emulsion type acrylic copolymer can be used. Among these binders, polyvinyl alcohol is preferred from the viewpoints of ink jet printing suitability and business foundation. The polymerization degree, saponification degree, Tg (glass transition temperature), MFT (minimum film forming temperature), etc. of these binders are not limited, and a crosslinkable functional group is added to these molecular chains. It doesn't matter.
また本発明においては、インクの定着性と発色性を向上させるためにインク受理層にカチオン性高分子を主成分とするインク定着剤を含有させても良い。このようなインク定着剤としては、ポリエチレンイミン、エピクロルヒドリン変性ポリアルキルアミン、ポリアミンポリアミドエピクロルヒドリン、ジメチルアミンアンモニアエピクロルヒドリン、ポリビニルベンジルトリメチルアンモニウムハライド、ポリジアクリルジメチルアンモニウムハライド、ポリジメチルアミノエチルメタクリレート塩酸塩、ポリビニルピリジウムハライド、カチオン性ポリアクリルアミド、カチオン性ポリスチレン共重合体、ジアリルジメチルアンモニウムクロライド重合物、ジアリルジメチルアンモニウムクロライド二酸化硫黄共重合物、ジアリルジメチルアンモニウムクロライドアミド共重合物、ジシアンジアミドホルマリン重縮合物、ジシアンジアミドジエチレントリアミン重縮合物、ポリアリルアミン、ポリアリルアミン塩酸塩、ポリアクリルアミド系樹脂、ポリアミドエポキシ樹脂、メラミン樹脂酸コロイド、尿素系樹脂、カチオン変性ポリビニルアルコール、アミノ酸型両性界面活性剤、ベタイン型化合物、その他第４級アンモニウム塩類、ポリアミン等を用いることが可能である。 In the present invention, an ink fixing agent containing a cationic polymer as a main component may be contained in the ink receiving layer in order to improve the fixing property and color development property of the ink. Examples of such an ink fixing agent include polyethyleneimine, epichlorohydrin-modified polyalkylamine, polyamine polyamide epichlorohydrin, dimethylamine ammonia epichlorohydrin, polyvinylbenzyltrimethylammonium halide, polydiacryldimethylammonium halide, polydimethylaminoethyl methacrylate hydrochloride, polyvinylpyridium. Halide, cationic polyacrylamide, cationic polystyrene copolymer, diallyldimethylammonium chloride polymer, diallyldimethylammonium chloride sulfur dioxide copolymer, diallyldimethylammonium chloride amide copolymer, dicyandiamide formalin polycondensate, dicyandiamide diethylenetriamine polycondensation , Polyallylamine Use polyallylamine hydrochloride, polyacrylamide resin, polyamide epoxy resin, melamine resin acid colloid, urea resin, cation-modified polyvinyl alcohol, amino acid type amphoteric surfactant, betaine type compound, other quaternary ammonium salts, polyamine, etc. It is possible.
インク受理層形成用の塗布液には、前記した無機顔料とバインダ以外の製紙用添加剤も本発明の目的を損なわない範囲で必要に応じて用いることができる。このような製紙用添加剤としては、分散剤、消泡剤、ｐＨ調整剤、湿潤剤、保水剤、増粘剤、架橋剤、離型剤、防腐剤、柔軟剤、ワックス、導電防止剤、帯電防止剤、サイズ剤、耐水化剤、可塑剤、蛍光増白剤、着色染料、還元剤、紫外線吸収剤、酸化防止剤、香料、脱臭剤等が挙げられる。 In the coating liquid for forming the ink-receiving layer, paper-making additives other than the inorganic pigment and the binder described above can be used as needed as long as the object of the present invention is not impaired. Examples of such papermaking additives include dispersants, antifoaming agents, pH adjusting agents, wetting agents, water retention agents, thickeners, crosslinking agents, mold release agents, preservatives, softening agents, waxes, anti-conductive agents, Examples thereof include an antistatic agent, a sizing agent, a water resistant agent, a plasticizer, a fluorescent brightening agent, a coloring dye, a reducing agent, an ultraviolet absorber, an antioxidant, a fragrance, and a deodorant.
本発明において、インク受理層は難燃不織布基材の少なくとも一方の面に、単層若しくは二層以上を設ける。インク受理層の塗布量は、片面当たり固形分換算で６〜２５ｇ／ｍ2の範囲とし、好ましくは１０〜１８ｇ／ｍ2である。インク受理層の塗布量が６ｇ／ｍ2未満だと、塗布量が少なすぎるためにインク受理層が難燃不織布基材表面の全体を均一に覆うことができず、また、インキ受理層の厚み自体も十分ではないため、印字滲み及び印字ムラをおこすなど十分なインクジェット記録適性が得られない虞がある。逆に、インク受理層の塗布量が２５ｇ／ｍ2を超えると、印刷適性の向上が見られず生産性やコスト的に好ましくないことに加え、難燃性が付与されてないインク受理層の割合が増加することで難燃性不織布自体の難燃性能を悪化させる虞がある。 In the present invention, the ink receiving layer is provided with a single layer or two or more layers on at least one surface of the flame-retardant nonwoven fabric substrate. The coating amount of the ink receiving layer is in the range of 6 to 25 g / m 2 in terms of solid content per side, preferably 10 to 18 g / m 2 . When the coating amount of the ink receiving layer is less than 6 g / m 2 , since the coating amount is too small, the ink receiving layer cannot uniformly cover the entire surface of the flame retardant nonwoven fabric, and the thickness of the ink receiving layer Since the ink itself is not sufficient, there is a possibility that sufficient ink jet recording suitability may not be obtained, such as causing print bleeding and print unevenness. On the contrary, if the coating amount of the ink receiving layer exceeds 25 g / m 2 , the printability is not improved and productivity and cost are not preferable. In addition, the ink receiving layer with no flame retardancy is not provided. There exists a possibility that the flame retardance performance of a flame-retardant nonwoven fabric itself may deteriorate because the ratio increases.
また本発明においては、難燃不織布基材上に難燃剤を含有させた塗布液を塗布し、別途難燃塗工層を設けてもよい。難燃塗工層を難燃不織布基材の少なくとも一方の面に設けることで難燃性不織布に更なる難燃性を付与することが可能である。ここで、同一の面に難燃塗工層とインク受理層とを積層する場合には、インク受理層によるインクジェット記録適性を損なわないようにインク受理層が最表層となるように順次積層させる必要がある。また、難燃不織布基材の一方の面のみにインク受理層を設けた場合には、インク受理層を設けていないもう一方の面に難燃塗工層を設けることで更なる難燃性を付与することも可能である。 Moreover, in this invention, the coating liquid containing the flame retardant may be apply | coated on a flame-retardant nonwoven fabric base material, and a flame-retardant coating layer may be provided separately. By providing the flame retardant coating layer on at least one surface of the flame retardant nonwoven fabric substrate, it is possible to impart further flame retardancy to the flame retardant nonwoven fabric. Here, when laminating the flame retardant coating layer and the ink receiving layer on the same surface, it is necessary to sequentially stack the ink receiving layer so that it becomes the outermost layer so as not to impair the ink jet recording suitability of the ink receiving layer. There is. In addition, when an ink receiving layer is provided only on one side of the flame retardant nonwoven fabric substrate, further flame retardancy can be achieved by providing a flame retardant coating layer on the other side where the ink receiving layer is not provided. It is also possible to grant.
本発明において難燃塗工層に含有させる難燃剤は特に限定するものではなく、公知の難燃剤を用いることが可能であるが、臭素、塩素などのハロゲン化合物からなる難燃剤は、燃焼条件によってはダイオキシン等の有害物を発生する可能性がある為、ノンハロゲン系難燃剤を使用することが好ましい。ノンハロゲン系難燃剤としては、市販されている無機系の難燃剤や、リンおよび／または窒素含有の有機系の難燃剤を用いることが可能である。これらの難燃剤としては、水酸化マグネシウム、水酸化アルミニウム等の金属水酸化物、三酸化アンチモン、酸化ジルコニウム、亜リン酸アルミニウム等の金属酸化物、ホウ酸、ホウ酸亜鉛などのホウ素系化合物、ポリリン酸、ポリリン酸アンモニウム、アミノ基変性リン酸エステル、又は水酸基含有リン酸エステル等のリン系化合物、メラミン又はメラミンシアヌレート化合物、メラミンリン酸塩、メラミンボレート等のメラミン系誘導体、グアニジン若しくはスルファミン酸グアニジン、リン酸グアニジン等のグアニジン系誘導体などのリンおよび／または窒素含有化合物など挙げられる。これらのノンハロゲン系難燃性化合物は、単独又は２種以上組み合わせて用いることが可能である。 In the present invention, the flame retardant contained in the flame retardant coating layer is not particularly limited, and a known flame retardant can be used. However, a flame retardant composed of halogen compounds such as bromine and chlorine depends on combustion conditions. May generate harmful substances such as dioxins, so it is preferable to use a non-halogen flame retardant. As the non-halogen flame retardant, commercially available inorganic flame retardants and organic flame retardants containing phosphorus and / or nitrogen can be used. These flame retardants include metal hydroxides such as magnesium hydroxide and aluminum hydroxide, metal oxides such as antimony trioxide, zirconium oxide and aluminum phosphite, boron compounds such as boric acid and zinc borate, Phosphorus compounds such as polyphosphoric acid, ammonium polyphosphate, amino group-modified phosphate esters, or hydroxyl group-containing phosphate esters, melamine or melamine cyanurate compounds, melamine derivatives such as melamine phosphate and melamine borate, guanidine or sulfamic acid Examples include phosphorus and / or nitrogen-containing compounds such as guanidine derivatives such as guanidine and guanidine phosphate. These non-halogen flame retardant compounds can be used alone or in combination of two or more.
また、難燃塗工層を形成するために塗布する塗布液には、難燃剤の他にバインダを含有させてもよい。バインダを添加することで、難燃塗工層の強度が増す等の利点がある。本発明において難燃塗工層に用いるバインダとしては、ポリビニルアルコール、ポリエチレン酢酸ビニル、変性ポリビニルアルコール、ヒドロキシエチルセルロース、カルボキシメチルセルロース等のセルロース誘導体、ポリビニルピロリドン、ポリビニルピリジン、ポリアクリルアミド、ポリエチレンオキサイド、ポリプロピレンオキサイド、でんぷん、変性でんぷん、ポリアクリル酸、ポリアクリル酸ソーダ、アルギン酸ソーダ、ポリスチレンスルホン酸ソーダ、カゼイン、ゼラチン、テルペン等の水溶性バインダー、ポリエチレン、ポリプロピレン、ポリイソブチレン、ポリスチレン、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリ酢酸ビニル、ポリビニルアセタール、ポリアクリルアミド、ポリアクリル酸エチル、ポリメタクリル酸メチル、ポリアクリロニトリル、ポリテトラフルオロエチレン、ポリ弗化ビニリデン、ポリブタジエン、ポリイソプレン、ポリクロロプレン、ナイロン、ポリエチレンテレフタレート、ポリブチレンテレフタレート、ポリカーボネート、ポリアセタール、ポリビスクロロメチルオキサシクロブタン、ポリフェニレンオキサイド、ポリスルフォン、ポリ−ｐ−キシリレン、ポリイミド、ポリベンズイミダゾール、フェノール樹脂、尿素樹脂、メラミン樹脂、エポキシ樹脂、アルキド樹脂、不飽和ポリエステル樹脂、ジアリルフタレート樹脂、スチレン−ブタジエン共重合体、変性スチレン−ブタジエン共重合体、アクリロニトリル−ブタジエン共重合体、メチルメタアクリレート−ブタジエン共重合体、アクリル酸エステル−メタアクリル酸エステル共重合体、酢酸ビニル−マレイン酸エステル共重合体、酢酸ビニル−アクリル共重合体、エチレン−酢酸ビニル−アクリル共重合体等のエマルジョン型バインダ又はエマルジョン型であるウレタン樹脂バインダを用いることができる。 In addition to the flame retardant, the coating liquid applied to form the flame retardant coating layer may contain a binder. By adding a binder, there are advantages such as an increase in the strength of the flame-retardant coating layer. As the binder used in the flame retardant coating layer in the present invention, polyvinyl alcohol, polyethylene vinyl acetate, modified polyvinyl alcohol, cellulose derivatives such as hydroxyethyl cellulose, carboxymethyl cellulose, polyvinyl pyrrolidone, polyvinyl pyridine, polyacrylamide, polyethylene oxide, polypropylene oxide, Starch, modified starch, polyacrylic acid, polyacrylic acid soda, sodium alginate, polystyrene sulfonate soda, casein, gelatin, terpene and other water-soluble binders, polyethylene, polypropylene, polyisobutylene, polystyrene, polyvinyl chloride, polyvinylidene chloride, Polyvinyl acetate, polyvinyl acetal, polyacrylamide, polyethyl acrylate, polymethacrylate , Polyacrylonitrile, polytetrafluoroethylene, polyvinylidene fluoride, polybutadiene, polyisoprene, polychloroprene, nylon, polyethylene terephthalate, polybutylene terephthalate, polycarbonate, polyacetal, polybischloromethyloxacyclobutane, polyphenylene oxide, polysulfone, poly -P-xylylene, polyimide, polybenzimidazole, phenol resin, urea resin, melamine resin, epoxy resin, alkyd resin, unsaturated polyester resin, diallyl phthalate resin, styrene-butadiene copolymer, modified styrene-butadiene copolymer, Acrylonitrile-butadiene copolymer, methyl methacrylate-butadiene copolymer, acrylic ester-methacrylic acid ester It is possible to use an emulsion type binder such as a silver copolymer, a vinyl acetate-maleic acid ester copolymer, a vinyl acetate-acrylic copolymer, an ethylene-vinyl acetate-acrylic copolymer, or a urethane resin binder that is an emulsion type. .
また、難燃塗工層を設ける場合には、難燃剤の塗布量が固形分換算で片面当たり３〜１０ｇ／ｍ2となるように設けることが好ましく、より好ましくは３〜６ｇ／ｍ2である。また、目的とする難燃性の向上効果に応じて塗布量を適宜変更してもよい。難燃剤の塗布量が３ｇ／ｍ2未満であると難燃性向上効果に乏しく、逆に塗布量が１０ｇ／ｍ2を超えると、難燃性向上効果自体は頭打ちとなるため、生産性やコスト増加の点から好ましくない。 Moreover, when providing a flame-retardant coating layer, it is preferable to provide it so that the application quantity of a flame retardant may be 3-10 g / m < 2 > per single side in conversion of solid content, More preferably, it is 3-6 g / m < 2 >. is there. Further, the coating amount may be appropriately changed according to the intended effect of improving flame retardancy. When the coating amount of the flame retardant is less than 3 g / m 2 , the effect of improving the flame retardancy is poor, and conversely when the coating amount exceeds 10 g / m 2 , the flame retardancy improving effect itself reaches its peak. It is not preferable from the point of cost increase.
本発明において、インク受理層又は難燃塗工層を難燃不織布基材上に設けるにあたり、それら塗布液の塗布方法については特に限定されるものではなく、公知の塗布方法を用いることができる。例えばキスコータ、ブレードコータ、エアナイフコータ、ロールコータ、リバースロールコータ、バーコータ、ロッドブレードコータ、ショートドウェルコータ、カーテンコータ、ダイコータ、グラビアコータ、チャンプレックスコータ等から選ばれたコーターを用い、インク受理層又は難燃塗工層をそれぞれ単層又は多層に分けて塗布できる。塗布液の液性からはエアナイフコータ、カーテンコータ、ロッドコータが好ましく、更に好ましくはエアナイフコータである。 In the present invention, when the ink receiving layer or the flame retardant coating layer is provided on the flame retardant nonwoven fabric substrate, the coating method of the coating liquid is not particularly limited, and a known coating method can be used. For example, using an ink receiving layer or a coater selected from a kiss coater, blade coater, air knife coater, roll coater, reverse roll coater, bar coater, rod blade coater, short dwell coater, curtain coater, die coater, gravure coater, Champlex coater, etc. Each flame retardant coating layer can be applied in a single layer or multiple layers. An air knife coater, a curtain coater, and a rod coater are preferable from the viewpoint of the liquidity of the coating solution, and an air knife coater is more preferable.
また、インク受理層又は難燃塗工層を形成する塗布液の乾燥方式についても特に限定されるものではなく、熱風乾燥、赤外乾燥、常温乾燥、凍結乾燥等を用いることができるが、乾燥効率の点から赤外乾燥、熱風乾燥が好ましい。 Further, the drying method of the coating liquid for forming the ink receiving layer or the flame retardant coating layer is not particularly limited, and hot air drying, infrared drying, room temperature drying, freeze drying, etc. can be used. In view of efficiency, infrared drying and hot air drying are preferable.
以下、本発明に係る難燃性不織布の実施例について具体的に説明するが、本発明はこれら実施例に限定されるものではない。また、実施例中の「部」及び「％」は特に断らない限り「質量部」及び「質量％」を示す。 Examples of the flame-retardant nonwoven fabric according to the present invention will be specifically described below, but the present invention is not limited to these examples. Further, “parts” and “%” in the examples indicate “parts by mass” and “% by mass” unless otherwise specified.
（実施例１）
＜難燃不織布基材の作製＞
難燃剤としてリン系化合物を含有するノンハロゲン難燃剤（商品名：フラムガードＳＰ−１０Ｙ、９０％濃度液、松本油脂製薬社製）１００部を水中に添加し、更に、浸透剤としてポリオキシエチレンポリオキシプロピレンアルキルエーテル（商品名：エマルゲンＭＳ１１０、１００％濃度品、花王社製）２部を添加して攪拌し、固形分濃度が３２％の難燃性含浸液を得た。得られた難燃性含浸液を、難燃処理のなされていない繊維からなる不織布（商品名：タイベック１０７３Ｄ、坪量７５ｇ／ｍ2、旭デュポン社製）に含浸コータにて難燃剤の含浸量が固形分換算で不織布１００質量部に対して１８．１質量部となるよう含浸し、難燃不織布基材を得た。
＜インク受理層用塗布液の調製＞
非晶質シリカ（商品名：７４Ｘ５５００、グレースデビソン社製）７０部、及び、非晶質シリカ（商品名：Ｐ−４１２、グレースデビソン社製）３０部を水中に添加し、カウレス分散機で固形分濃度が２７．５％の顔料スラリーを調製した。得られた顔料スラリーに、バインダとしてポリビニルアルコール（商品名：エクセバールＲＳ２１１７、１１．５％溶解液、クラレ社製）３０部、エチレン酢酸ビニル共重合体（商品名：ポリゾールＡＤ−１３−５０、５０％濃度品、昭和高分子社製）２０部、インクジェットインクの定着剤としてカチオン性樹脂（商品名：ユニセンスＣＰ−１０３、４０％濃度品、センカ社製）２０部、バインダの耐水化剤として酢酸ジルコニル（商品名：ジルコゾールＺＡ−３０、３０％濃度品、第一稀元素社製）１０部を添加して攪拌し、さらに水を添加して攪拌し、固形分濃度が１７．５％のインク受理層用塗布液を得た。
＜難燃性不織布の作成＞
難燃不織布基材の一方の面に、インク受理層用塗布液を、塗布量が固形分換算で１０．５ｇ／ｍ2となるようにエアナイフコータにて塗布し、次いでエアドライヤにて熱風乾燥を行い、目的とする難燃性不織布を得た。
Example 1
<Production of flame retardant nonwoven fabric substrate>
100 parts of a non-halogen flame retardant containing a phosphorus compound as a flame retardant (trade name: Flamguard SP-10Y, 90% concentration liquid, manufactured by Matsumoto Yushi Seiyaku Co., Ltd.) is added to water, and polyoxyethylene poly as a penetrant is added. 2 parts of oxypropylene alkyl ether (trade name: Emulgen MS110, 100% concentration product, manufactured by Kao Corporation) was added and stirred to obtain a flame retardant impregnation liquid having a solid content concentration of 32%. The obtained flame retardant impregnation liquid is impregnated with a flame retardant in an impregnation coater on a nonwoven fabric (trade name: Tyvek 1073D, basis weight 75 g / m 2 , manufactured by Asahi DuPont) which is not subjected to flame retardant treatment. Was impregnated so as to be 18.1 parts by mass with respect to 100 parts by mass of the nonwoven fabric in terms of solid content to obtain a flame-retardant nonwoven fabric substrate.
<Preparation of coating solution for ink receiving layer>
70 parts of amorphous silica (trade name: 74X5500, manufactured by Grace Devison) and 30 parts of amorphous silica (trade name: P-412, manufactured by Grace Devison) are added to water and solidified by a cowless disperser. A pigment slurry having a partial concentration of 27.5% was prepared. Polyvinyl alcohol (trade name: EXEVAL RS2117, 11.5% solution, manufactured by Kuraray Co., Ltd.) 30 parts, ethylene vinyl acetate copolymer (trade names: Polysol AD-13-50, 50) as a binder in the obtained pigment slurry. % Concentration product, Showa Polymer Co., Ltd.) 20 parts, cationic resin (trade name: Unisense CP-103, 40% concentration product, manufactured by Senka) as a fixing agent for inkjet ink, acetic acid as binder water resistance agent Add 10 parts of zirconyl (trade name: Zircozol ZA-30, 30% concentration product, manufactured by Daiichi Rare Element Co., Ltd.) and stir, and then add water and stir to obtain an ink having a solid concentration of 17.5%. A receiving layer coating solution was obtained.
<Creation of flame retardant nonwoven fabric>
On one side of the flame retardant nonwoven fabric substrate, the ink receiving layer coating solution is applied with an air knife coater so that the coating amount is 10.5 g / m 2 in terms of solid content, and then dried with hot air with an air dryer. The target flame-retardant nonwoven fabric was obtained.
（実施例２）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して３０．５質量部となるように含浸し、インク受理層の塗布量を１２．２ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Example 2)
In Example 1, the flame retardant impregnation liquid was impregnated so that the flame retardant impregnation amount was 30.5 parts by mass in terms of solid content with respect to 100 parts by mass of the nonwoven fabric, and the coating amount of the ink receiving layer was 12.2 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
（実施例３）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１６．５質量部となるように含浸し、インク受理層の塗布量を１０．８ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Example 3)
In Example 1, the flame retardant impregnation liquid was impregnated so that the amount of impregnation of the flame retardant was 16.5 parts by mass in terms of solid content with respect to 100 parts by mass of the nonwoven fabric, and the coating amount of the ink receiving layer was 10.8 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
（実施例４）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して２２．０質量部となるように含浸し、インク受理層の塗布量を１６．１ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
Example 4
In Example 1, the flame retardant impregnation liquid was impregnated so that the flame retardant impregnation amount was 22.0 parts by mass in terms of solid content with respect to 100 parts by mass of the nonwoven fabric, and the coating amount of the ink receiving layer was 16.1 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
（実施例５）
実施例１において難燃性含浸液中の浸透剤の配合量を０．５部とし、難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１５．１質量部となるように含浸し、インク受理層の塗布量を１０．１ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Example 5)
In Example 1, the blending amount of the penetrant in the flame retardant impregnating liquid is 0.5 part, and the flame retardant impregnating liquid is 15.1 mass per 100 mass parts of the nonwoven fabric in terms of the impregnation amount of the flame retardant. A flame-retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the ink-receiving layer was impregnated so as to be part and the coating amount of the ink receiving layer was 10.1 g / m 2 .
（実施例６）
実施例１において難燃性含浸液中の浸透剤の配合量を６部とし、難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して２０．１質量部となるように含浸し、インク受理層の塗布量を１２．６ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Example 6)
In Example 1, the blending amount of the penetrant in the flame retardant impregnating solution is 6 parts, and the flame retardant impregnating solution is 20.1 parts by mass with respect to 100 parts by mass of the nonwoven fabric in terms of the amount of impregnation of the flame retardant. A flame-retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the ink-receiving layer was impregnated so that the coating amount was 12.6 g / m 2 .
（実施例７）
＜難燃塗工層用塗布液の調製＞
難燃剤としてリン系有機化合物を含有するノンハロゲン難燃剤（商品名：ニッカファイノンＨＦＴ−３、４０％濃度液、日華化学社製）１００部を水中に添加し、更に、バインダとしてエチレン酢酸ビニル共重合樹脂エマルジョン（商品名：スミカフレックス４０１ＨＱ、５５％濃度液、住化ケムテックス社製）１０部を添加して攪拌し、固形分濃度が２５％の難燃塗工層用塗布液を得た。
＜難燃性不織布の作成＞
実施例１において得られた難燃性不織布のインクジェットインク受理層を設けていない面に、難燃塗工層用塗布液を難燃剤の塗布量が固形分換算で３．２ｇ／ｍ2になるようにエアーナイフコータにて塗布して難燃性不織布を得た。
(Example 7)
<Preparation of coating solution for flame retardant coating layer>
100 parts of a non-halogen flame retardant containing a phosphorus-based organic compound as a flame retardant (trade name: Nikkafinon HFT-3, 40% concentration solution, manufactured by Nikka Chemical Co., Ltd.) is added to water, and ethylene vinyl acetate is used as a binder. 10 parts of a copolymer resin emulsion (trade name: Sumikaflex 401HQ, 55% concentration solution, manufactured by Sumika Chemtex Co., Ltd.) was added and stirred to obtain a coating solution for a flame retardant coating layer having a solid content concentration of 25%. .
<Creation of flame retardant nonwoven fabric>
The coating amount of the flame retardant coating layer is 3.2 g / m 2 in terms of solid content on the surface of the flame retardant nonwoven fabric obtained in Example 1 where the inkjet ink receiving layer is not provided. Thus, a flame retardant nonwoven fabric was obtained by applying with an air knife coater.
（実施例８）
実施例７において不織布を坪量１０５ｇ／ｍ2の不織布（商品名：タイベック１０８２Ｄ、坪量１０５ｇ／ｍ2、旭デュポン社製）に変更し、難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１６．２質量部となるように含浸し、インク受理層の塗布量を１２．０ｇ／ｍ2となるように塗布し、難燃塗工層用塗布液を難燃剤の塗布量が固形分換算で８．０ｇ／ｍ2になるように塗布した以外は実施例７と同様にして難燃性不織布を得た。
(Example 8)
In Example 7, the nonwoven fabric was changed to a nonwoven fabric having a basis weight of 105 g / m 2 (trade name: Tyvek 1082D, basis weight 105 g / m 2 , manufactured by Asahi DuPont), and the flame retardant impregnation liquid was solid in the amount of impregnation of the flame retardant. Impregnation so that the amount is 16.2 parts by mass with respect to 100 parts by mass of the nonwoven fabric, and the application amount of the ink receiving layer is 12.0 g / m 2. A flame retardant nonwoven fabric was obtained in the same manner as in Example 7 except that the coating amount of flame retardant was 8.0 g / m 2 in terms of solid content.
（実施例９）
実施例８において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して２５．１質量部となるように含浸し、インク受理層の塗布量を１５．１ｇ／ｍ2となるように塗布し、難燃塗工層用塗布液を難燃剤の塗布量が固形分換算で５．４ｇ／ｍ2になるように塗布した以外は実施例８と同様にして難燃性不織布を得た。
Example 9
In Example 8, the flame retardant impregnation liquid was impregnated so that the flame retardant impregnation amount was 25.1 parts by mass in terms of solid content with respect to 100 parts by mass of the nonwoven fabric, and the coating amount of the ink receiving layer was 15.1 g / the coating is m 2, except that the flame燃塗coating layer coating solution was applied so the coating amount of the flame retardant is 5.4 g / m 2 in terms of solid content in the same manner as in example 8 flame A flammable nonwoven was obtained.
（比較例１）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１２．５質量部となるように含浸し、インク受理層の塗布量を１０．８ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Comparative Example 1)
In Example 1, the flame retardant impregnation liquid was impregnated so that the amount of impregnation of the flame retardant was 12.5 parts by mass with respect to 100 parts by mass of the nonwoven fabric in terms of solid content, and the coating amount of the ink receiving layer was 10.8 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
（比較例２）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して８．６質量部となるように含浸し、インク受理層の塗布量を１１．０ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Comparative Example 2)
In Example 1, the flame retardant impregnation liquid was impregnated so that the amount of impregnation of the flame retardant was 8.6 parts by mass with respect to 100 parts by mass of the nonwoven fabric in terms of solid content, and the coating amount of the ink receiving layer was 11.0 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
（比較例３）
実施例１において不織布を坪量１０５ｇ／ｍ2の不織布（商品名：タイベック１０８２Ｄ、坪量１０５ｇ／ｍ2、旭デュポン社製）に変更し、難燃性含浸液中に浸透剤を配合せず、難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１６．０質量部となるように含浸し、インク受理層の塗布量を１３．５ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Comparative Example 3)
In Example 1, the nonwoven fabric was changed to a nonwoven fabric having a basis weight of 105 g / m 2 (trade name: Tyvek 1082D, basis weight 105 g / m 2 , manufactured by Asahi DuPont), and no penetrant was added to the flame-retardant impregnating solution. The flame retardant impregnating solution is impregnated so that the flame retardant impregnation amount is 16.0 parts by mass with respect to 100 parts by mass of the nonwoven fabric, and the coating amount of the ink receiving layer is 13.5 g / m 2 . A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that coating was performed.
（比較例４）
実施例１において難燃性含浸液を難燃剤の含浸量が固形分換算で不織布１００質量部に対して１９．５質量部となるように含浸し、インク受理層の塗布量を２６．０ｇ／ｍ2となるように塗布した以外は実施例１と同様にして難燃性不織布を得た。
(Comparative Example 4)
In Example 1, the flame retardant impregnation liquid was impregnated so that the impregnation amount of the flame retardant was 19.5 parts by mass with respect to 100 parts by mass of the nonwoven fabric in terms of solid content, and the coating amount of the ink receiving layer was 26.0 g / A flame retardant nonwoven fabric was obtained in the same manner as in Example 1 except that the coating was applied so as to be m 2 .
＜難燃性不織布の物性評価＞
実施例１〜９、比較例１〜４で得られた難燃性不織布について、２３℃×５０％ＲＨの条件で調湿後、以下の方法により難燃性及びインクジェット記録適性の評価を行った。結果を図１に示す。
<Evaluation of physical properties of flame retardant nonwoven fabric>
About the flame-retardant nonwoven fabric obtained in Examples 1-9 and Comparative Examples 1-4, after adjusting humidity on the conditions of 23 degreeC x 50% RH, the flame retardance and inkjet recording suitability were evaluated by the following methods. . The results are shown in FIG.
＜難燃性評価（燃焼性試験方法）＞
繊維製品の燃焼性試験方法であるＪＩＳ Ｌ１０９１ Ａ−１法（４５°ミクロバーナー法）に準拠して、以下の条件で試験を行った。
試験条件：加熱時間 ６０秒、着炎後加熱時間 ３秒
評価方向：表（縦、横）、裏（縦、横）
評価基準：○ 着炎しない。仮に着炎しても次の基準を超えないこと。
（残炎時間 ３秒以下、残じん時間 ５秒以下、炭化面積 ３０ｃｍ2以下)
× 着炎し燃え広がる。
<Flame retardance evaluation (flammability test method)>
The test was conducted under the following conditions in accordance with JIS L1091 A-1 method (45 ° micro burner method), which is a flammability test method for textile products.
Test conditions: heating time 60 seconds, post-flame heating time 3 seconds Evaluation direction: front (vertical, horizontal), back (vertical, horizontal)
Evaluation criteria: ○ No flame. Even if it flames, the following standards must not be exceeded.
(After-flame time 3 seconds or less, afterglow time of 5 seconds or less, carbonized area 30 cm 2 or less)
× Flames and spreads.
＜インクジェット記録適性＞
インクジェットプリンタ ＥＰＳＯＮ ＰＸ Ｇ５３００を用いてインク受理層を有する面に任意の図柄を印字して印字滲み及びムラを目視評価した。
○ 印字滲み及びムラがなく、合格。
× 印字滲み及びムラとも顕著で実用に耐えず、不合格。
<Inkjet recording suitability>
An arbitrary design was printed on the surface having the ink receiving layer using an ink jet printer EPSON PX G5300, and the print bleeding and unevenness were visually evaluated.
○ There is no printing blur and unevenness, and it passes.
× Print bleeding and unevenness are remarkable, unacceptable for practical use, and rejected.
図１に示された結果から明らかなように、実施例１〜９により得られた難燃性不織布はいずれもＪＩＳ Ｌ１０９１ Ａ−１法による区分３の条件を満たしており、これらは全て消防法で定められた防炎性試験に合格するレベルの難燃性を有していると言える。これは、浸透剤の配合割合や難燃性含浸液が適切であったために難燃不織布基材に難燃剤がムラなく均一に含浸されたためであると考えられる。 As is clear from the results shown in FIG. 1, the flame-retardant nonwoven fabrics obtained in Examples 1 to 9 all satisfy the conditions of Category 3 according to JIS L1091 A-1 method, and these are all fire fighting laws. It can be said that it has the flame retardance of the level which passes the flame-proof test defined in (1). This is considered to be because the flame retardant nonwoven fabric base material was uniformly impregnated with the flame retardant because the blending ratio of the penetrant and the flame retardant impregnation liquid were appropriate.
また、実施例１〜９により得られた難燃性不織布はインクジェットプリンタによる記録適性についても良好であり、即ち、実施例１〜９により得られた難燃性不織布はいずれもの高い難燃性とインクジェット記録適性を両立したものである。 Moreover, the flame-retardant nonwoven fabric obtained by Examples 1-9 is also favorable about the recording suitability by an inkjet printer, that is, the flame-retardant nonwoven fabric obtained by Examples 1-9 has any high flame retardancy. Both ink jet recording suitability is achieved.
これに対して、比較例１〜４により得られた難燃性不織布は、難燃性の点で実施例のものよりも劣りＪＩＳ Ｌ１０９１ Ａ−１法による区分３の条件を満たさないものであった。これは、難燃性含浸液による難燃剤の含浸量が少ない（比較例１，２）、難燃性含浸液中に浸透剤が含まれていない（比較例３）、インク受理層の塗布量が多いことにより難燃剤の含浸量が相対的に低下している（比較例４）、といったことが原因であると思われる。 On the other hand, the flame-retardant nonwoven fabrics obtained in Comparative Examples 1 to 4 are inferior to those of the examples in terms of flame retardancy and do not satisfy the conditions of Category 3 according to JIS L1091 A-1 method. It was. This is because the amount of flame retardant impregnated with the flame retardant impregnating solution is small (Comparative Examples 1 and 2), the flame retardant impregnating solution does not contain a penetrant (Comparative Example 3), and the amount of ink receiving layer applied. The reason is that the amount of impregnation of the flame retardant is relatively decreased due to the large amount of (Comparative Example 4).
以上述べたように、本発明の難燃性不織布は高い難燃性とインクジェット印刷適性を有するものであり、消防法により防炎基準の規定されている垂れ幕、壁紙等の内装材、ポスターなどの用途にも好適に用いることができるものである。 As described above, the flame retardant nonwoven fabric of the present invention has high flame retardancy and suitability for ink jet printing, and is suitable for interior materials such as banners, wallpaper, posters, etc., which are regulated by the Fire Service Act. It can be suitably used for applications.
Claims (10)
前記難燃不織布基材は、難燃処理のなされていない繊維からなる不織布に難燃性含浸液を不織布１００質量部に対して難燃剤が固形分で１５質量部以上となるように含浸させたものであり、
前記難燃性含浸液は、難燃剤と、難燃剤１００質量部に対して固形分換算で０．５〜１０質量部の浸透剤を含み、
前記浸透剤は、下記Ａ群から１種又は２種以上を用いるものであり、
前記インク受理層は、無機顔料及びバインダを含み、固形分換算で片面当たり６〜２５ｇ／ｍ2の範囲で設けられ、
ＪＩＳ Ｌ１０９１ Ａ−１法による残炎時間が３秒以下、残じん時間が５秒以下、燃焼面積が３０ｃｍ2以下であることを特徴とする難燃性不織布。
（Ａ群：イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテル） An ink receiving layer is provided on at least one surface of the flame retardant nonwoven fabric substrate,
The flame retardant nonwoven fabric substrate was impregnated with a flame retardant impregnating solution into a nonwoven fabric made of fibers not subjected to flame retardant treatment so that the flame retardant was 15 parts by mass or more in solid content with respect to 100 parts by mass of the nonwoven fabric. Is,
The flame retardant impregnating solution includes a flame retardant and 0.5 to 10 parts by mass of a penetrant in terms of solid content with respect to 100 parts by mass of the flame retardant.
The penetrant is one or more types from the following group A,
The ink receiving layer includes an inorganic pigment and a binder, and is provided in a range of 6 to 25 g / m 2 per side in terms of solid content.
A flame retardant nonwoven fabric characterized by having a residual flame time of 3 seconds or less according to JIS L1091 A-1, a residual dust time of 5 seconds or less, and a combustion area of 30 cm 2 or less.
(Group A: isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene lauryl ether, polyoxyalkylene Alkyl ether, polyoxyethylene alkyl ether)
前記難燃性含浸液を不織布に、不織布１００質量部に対して１５質量部以上含まれるよう含浸させて難燃不織布基材を作る難燃不織布基材製造ステップと、
無機化合物とバインダと水を用いてインク受理層用塗布液を調製するインク受理層用塗布液調製ステップと、
前記難燃不織布基材の少なくとも一方の面に前記インク受理層用塗布液を塗布し、イ固形分換算で片面当たり６〜２５ｇ／ｍ2の範囲となるようにインク受理層を設けるインク受理層塗布ステップと、を有し、
前記浸透剤は、下記Ａ群から１種又は２種以上を用いるものであり、
ＪＩＳ Ｌ１０９１ Ａ−１法による残炎時間が３秒以下、残じん時間が５秒以下、燃焼面積が３０ｃｍ2以下である、ことを特徴とする難燃性不織布製造方法。
（Ａ群：イソプロピルアルコール、ポリエーテル変性シリコーン、アセチレングリコール、アセチレンアルコール、アセチレンジオール、モノアルキルアンモニウムクロライド、ポリオキシアルキレン分岐デシルエーテル、ポリオキシエチレンポリオキシプロピレングリコール、ポリオキシエチレンラウリルエーテル、ポリオキシアルキレンアルキルエーテル、ポリオキシエチレンアルキルエーテル） A flame retardant impregnating liquid preparation step for preparing a flame retardant impregnating liquid using 0.5 to 10 parts by mass of a penetrant in terms of solid content with respect to 100 parts by mass of the flame retardant;
A flame retardant nonwoven fabric base material production step for making a flame retardant nonwoven fabric base material by impregnating the flame retardant impregnation liquid into a nonwoven fabric so as to be contained in an amount of 15 parts by mass or more with respect to 100 parts by mass of the nonwoven fabric;
An ink receiving layer coating solution preparation step of preparing an ink receiving layer coating solution using an inorganic compound, a binder, and water;
An ink receiving layer in which the ink receiving layer coating solution is applied to at least one surface of the flame retardant nonwoven fabric substrate, and an ink receiving layer is provided so that the amount is 6 to 25 g / m 2 per side in terms of solid content. An application step,
The penetrant is one or more types from the following group A,
A flame-retardant nonwoven fabric manufacturing method, characterized in that the after flame time according to JIS L1091 A-1 method is 3 seconds or less, the residual time is 5 seconds or less, and the combustion area is 30 cm 2 or less.
(Group A: isopropyl alcohol, polyether-modified silicone, acetylene glycol, acetylene alcohol, acetylene diol, monoalkylammonium chloride, polyoxyalkylene branched decyl ether, polyoxyethylene polyoxypropylene glycol, polyoxyethylene lauryl ether, polyoxyalkylene Alkyl ether, polyoxyethylene alkyl ether)
前記難燃塗工層用塗工液を、前記インク受理層と難燃不織布基材との間、及び／又は前記難燃不織布基材のインク受理層を設けてない側の面上に、固形分換算で片面当たり３〜１０ｇ／ｍ2の範囲となるように塗工して難燃塗工層を設ける難燃塗工層形成ステップを有することを特徴とする請求項９に記載の難燃性不織布製造方法。 A flame retardant and a coating liquid preparation step for a flame retardant coating layer for preparing a coating liquid for a flame retardant coating layer using a binder of 3 to 30 parts by mass with respect to 100 parts by mass of the flame retardant,
The coating liquid for the flame retardant coating layer is solid between the ink receiving layer and the flame retardant nonwoven fabric substrate and / or on the surface of the flame retardant nonwoven fabric substrate on which the ink receiving layer is not provided. The flame retardant coating layer forming step of providing a flame retardant coating layer by coating so as to be in a range of 3 to 10 g / m 2 per side in terms of minutes. -Based nonwoven fabric manufacturing method.
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