JP2013091210A - Flame retarding corrugated cardboard - Google Patents
Flame retarding corrugated cardboard Download PDFInfo
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- JP2013091210A JP2013091210A JP2011233923A JP2011233923A JP2013091210A JP 2013091210 A JP2013091210 A JP 2013091210A JP 2011233923 A JP2011233923 A JP 2011233923A JP 2011233923 A JP2011233923 A JP 2011233923A JP 2013091210 A JP2013091210 A JP 2013091210A
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- 239000011111 cardboard Substances 0.000 title claims abstract description 56
- 230000000979 retarding effect Effects 0.000 title 1
- 239000000123 paper Substances 0.000 claims abstract description 90
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 5
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 5
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 83
- 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 claims description 47
- 239000003063 flame retardant Substances 0.000 claims description 47
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 12
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000011574 phosphorus Substances 0.000 claims description 11
- 239000011247 coating layer Substances 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 17
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 abstract 1
- YUWBVKYVJWNVLE-UHFFFAOYSA-N [N].[P] Chemical compound [N].[P] YUWBVKYVJWNVLE-UHFFFAOYSA-N 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- AZUYLZMQTIKGSC-UHFFFAOYSA-N 1-[6-[4-(5-chloro-6-methyl-1H-indazol-4-yl)-5-methyl-3-(1-methylindazol-5-yl)pyrazol-1-yl]-2-azaspiro[3.3]heptan-2-yl]prop-2-en-1-one Chemical compound ClC=1C(=C2C=NNC2=CC=1C)C=1C(=NN(C=1C)C1CC2(CN(C2)C(C=C)=O)C1)C=1C=C2C=NN(C2=CC=1)C AZUYLZMQTIKGSC-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000000049 pigment Substances 0.000 description 4
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000004566 building material Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 229920000388 Polyphosphate Polymers 0.000 description 2
- ADCOVFLJGNWWNZ-UHFFFAOYSA-N antimony trioxide Chemical compound O=[Sb]O[Sb]=O ADCOVFLJGNWWNZ-UHFFFAOYSA-N 0.000 description 2
- 238000003763 carbonization Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 phosphorus compound Chemical class 0.000 description 2
- 229920005596 polymer binder Polymers 0.000 description 2
- 239000002491 polymer binding agent Substances 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 229920003071 Polyclar® Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007646 gravure printing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000007645 offset printing Methods 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000010893 paper waste Substances 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Landscapes
- Cartons (AREA)
- Laminated Bodies (AREA)
- Paper (AREA)
Abstract
Description
この発明は、難燃効果だけでなく、防炎効果を有する段ボールに関する。 The present invention relates to a corrugated cardboard having not only a flame retardant effect but also a flameproof effect.
紙や段ボールが燃えて、それ自体やそれらで包装していたものまで焼失しまうことを防ぐために、紙に難燃効果を持たせることが様々に検討されている。特許文献１には、ポリクラール繊維や無機繊維を混抄した難燃性基紙に、シリカ、炭酸カルシウム、酸化チタンなどの充填剤と高分子バインダーとの混合液を塗工した難燃性化粧シートが記載されている（特許文献１カラム３第１６〜３４行目等））。また、高分子バインダーにさらに三酸化アンチモン、不溶化高分子燐化合物等の難燃剤を添加してさらに難燃化を図ることも記載されている（同文献カラム３第３７〜３９行目）。 In order to prevent paper and corrugated cardboard from burning and burning them and even those wrapped in them, various studies have been made to give paper a flame retardant effect. Patent Document 1 discloses a flame retardant decorative sheet in which a mixed liquid of a filler such as silica, calcium carbonate, and titanium oxide and a polymer binder is applied to a flame retardant base paper obtained by mixing polyclar fiber and inorganic fiber. (Patent Document 1, column 3, lines 16 to 34, etc.)). Further, it is also described that a flame retardant such as antimony trioxide and an insolubilized polymer phosphorus compound is further added to the polymer binder to further make it flame retardant (Column 3, lines 37-39).
また、特許文献２には、酸化チタン、酸化ジルコニウム、酸化珪素を複数用いてカーボンブラックと合成樹脂バインダーと混合した不燃剤を、ライナや中芯に塗布又は含浸させた難燃耐火性段ボールが記載されている（特許文献２請求項１、２）。また、不燃材としてガラス繊維、マイカ、クレイ、タルク、水酸化アルミニウムを付加する旨も記載されている（特許文献２請求項３）。 Patent Document 2 describes a flame retardant fireproof corrugated cardboard in which a flame retardant mixed with carbon black and a synthetic resin binder using a plurality of titanium oxide, zirconium oxide, and silicon oxide is applied or impregnated on a liner or a core. (Patent Document 2, claims 1 and 2). It is also described that glass fiber, mica, clay, talc, and aluminum hydroxide are added as non-combustible materials (Patent Document 2, Claim 3).
しかしながら、これら文献に記載の加工紙は難燃性を発揮するものの、消防庁が求める防炎性までは発揮できなかった。この発明は、簡便な手法で段ボールに十分な防炎性を付与することを目的とする。 However, although the processed paper described in these documents exhibits flame retardancy, it has not been able to exhibit the flame resistance required by the Fire Department. An object of the present invention is to impart sufficient flameproofing properties to cardboard by a simple technique.
この発明は、紙層の一方の表面上に炭酸カルシウム、カオリン、二酸化チタンの少なくとも一つを含む無機質層を設け、この無機質層以外の層に、リン及び窒素の複合化合物とからなる難燃剤を含有させた防炎紙を、紙層より無機質層側を外側に向けて配したライナとして用いることにより、上記の課題を解決したのである。 According to the present invention, an inorganic layer containing at least one of calcium carbonate, kaolin, and titanium dioxide is provided on one surface of a paper layer, and a flame retardant comprising a composite compound of phosphorus and nitrogen is provided on a layer other than the inorganic layer. The above-described problems have been solved by using the flameproof paper contained as a liner with the inorganic layer side of the paper layer facing outward.
紙層とは別に設けた無機質層を、防炎性能を発揮すべき面に配するとともに、その無機質層とは別に難燃剤を含有させることで、紙層の燃焼を防ぐことができる。 The inorganic layer provided separately from the paper layer is disposed on the surface where the flameproof performance should be exhibited, and by containing a flame retardant separately from the inorganic layer, combustion of the paper layer can be prevented.
この難燃剤の含有方法としては、無機質層のさらに外面に難燃剤コーティング層として設ける形態と、紙層自体に含浸させる形態とのいずれでも効果を発揮する。前者の場合は二層による相乗的な難燃、防炎効果となり、後者の場合は無機質層による防護効果に加えて、紙層自体が難燃となることで、全体として十分な防炎効果を発揮するようになる。 As a method for containing the flame retardant, the effect is exhibited in both the form in which the inorganic layer is further provided as a flame retardant coating layer on the outer surface and the form in which the paper layer is impregnated. In the case of the former, it becomes a synergistic flame retardant and flame proof effect by two layers, and in the case of the latter, in addition to the protective effect by the inorganic layer, the paper layer itself becomes flame retardant, so that a sufficient flame proof effect as a whole is obtained. To come out.
難燃剤コーティング層を形成させる場合は、リン及び窒素の複合化合物とともに、水酸化アルミニウムや酸化チタンなどの顔料と、ポリリン酸塩系化合物を混合して無機質層上に塗工する。 In the case of forming the flame retardant coating layer, a pigment such as aluminum hydroxide or titanium oxide and a polyphosphate compound are mixed together with a composite compound of phosphorus and nitrogen and coated on the inorganic layer.
また、難燃剤を紙層に含浸させる場合は、スラリーや溶液として液状にした後、スプレーや印刷機などにより含ませる方法が挙げられる。 Moreover, when impregnating a flame retardant with a paper layer, after making it into liquid form as a slurry or a solution, the method of including with a spray, a printing machine, etc. is mentioned.
この防炎段ボールが表側から火炎と接触しても、無機質層によって紙層を覆われているため、表側からは容易に着火しない。表側のライナが燃え尽きて破れたとしても、中芯と裏側のライナに覆われているため、その破れた穴には容易に空気が到達することができず、中芯と裏側のライナまで燃え尽きることにはならず、炎を防ぎきることができる。もし中芯と裏側のライナがなく、防炎紙だけでは、防炎紙が表側から破られた時点で裏側に炎が周り、裏側に新鮮な空気が供給されて、裏側から燃え尽きてしまう。つまり、この防炎段ボールの防炎性能は、段ボールの構成を取ることで発揮されている。 Even if this flameproof cardboard comes into contact with the flame from the front side, the paper layer is covered with the inorganic layer, so that it is not easily ignited from the front side. Even if the front side liner burns out and is torn, it is covered by the core and the back side liner, so air cannot easily reach the torn hole, and the core and back side liner will burn out. It can prevent the flame. If there is no liner on the core and the back side, and only the flameproof paper, when the flameproof paper is torn from the front side, the flame will circulate on the back side, fresh air will be supplied to the back side, and it will burn out from the back side. That is, the flameproof performance of this flameproof cardboard is exhibited by taking the configuration of the cardboard.
もちろん、上記の防炎紙を、防炎段ボールの裏側のライナとして用いると、さらに防炎能力が高まる。 Of course, when the above-mentioned flameproof paper is used as a liner on the back side of the flameproof cardboard, the flameproof ability is further enhanced.
また、上記の防炎紙をそのまま表側又は裏側のライナとして、紙層より無機質層を中芯に対して外側に向けて配する構成以外に、上記の防炎紙を、段ボールライナの表面や裏面に貼り付け、合紙して用いることによっても、防炎段ボールを得ることができる。 In addition to the configuration in which the above-mentioned flameproof paper is used as a liner on the front side or the backside, and the inorganic layer is arranged outward from the paper layer with respect to the core, the above-mentioned flameproof paper is used on the front and back surfaces of the cardboard liner. A flameproof cardboard can also be obtained by sticking to and using a slip sheet.
この発明にかかる防炎段ボールを用いることにより、高い防炎性能を持たせることができる。また、紙層に無機質層が積層されているので、その防炎段ボールの強度も高いものとなる。この防炎段ボールを建材用パネルとして用いると、安価かつ軽量で、防炎効果の高い建材として用いることができる。また、この防炎段ボールを箱として用いると高い耐火性能を発揮できるので、それを用いた箱を保管していた倉庫が火災に遭ったときでも、火の周りの速さを抑制する効果が得られる。 By using the flameproof cardboard according to the present invention, high flameproof performance can be provided. In addition, since the inorganic layer is laminated on the paper layer, the strength of the flameproof cardboard is also high. When this flameproof cardboard is used as a building material panel, it can be used as a building material that is inexpensive and lightweight and has a high flameproofing effect. In addition, when this flameproof cardboard is used as a box, it can exhibit high fire resistance, so even if the warehouse where the box using it is fired encounters a fire, the effect of suppressing the speed around the fire is obtained. It is done.
以下、この発明の実施形態について詳細に説明する。
まず、第一の実施形態について説明する。図１はこの発明の第一の実施形態にかかる防炎段ボールに用いる防炎紙の断面図である。この防炎紙２１は紙層１１と、無機質層１２との積層体である。
Hereinafter, embodiments of the present invention will be described in detail.
First, the first embodiment will be described. FIG. 1 is a sectional view of a flameproof paper used for a flameproof cardboard according to the first embodiment of the present invention. The flameproof paper 21 is a laminate of the paper layer 11 and the inorganic layer 12.
紙層１１を形成する紙は、少なくともパルプを５０質量％以上含み、ガラス繊維や合成繊維など他の成分を構成要素として含んでいてもよい。また、紙層１１は前記紙以外に、難燃剤を含浸したものである必要がある。この難燃剤は少なくともリン及び窒素の複合化合物を含む。この難燃剤を、液中に分散させてスラリー又は溶液とした後、スプレーやグラビア印刷機などにより紙層１１の表面に付与して含浸させる。この含浸工程は上記の無機質層１２と積層させた後に行ってもよいし、無機質層１２と積層する前に予め行っていてもよい。 The paper forming the paper layer 11 contains at least 50% by mass of pulp, and may contain other components such as glass fiber and synthetic fiber as constituent elements. Moreover, the paper layer 11 needs to be impregnated with a flame retardant in addition to the paper. This flame retardant contains at least a complex compound of phosphorus and nitrogen. After this flame retardant is dispersed in a liquid to form a slurry or solution, it is applied and impregnated on the surface of the paper layer 11 by spraying or a gravure printing machine. This impregnation step may be performed after laminating with the inorganic layer 12 or may be performed in advance before laminating with the inorganic layer 12.
上記紙層１１が含有する上記難燃剤の乾燥後における含有量は５ｇ／ｍ２以上１００ｇ／ｍ２以下であるとよい。５ｇ／ｍ２未満であると防炎効果が不十分であり、１００ｇ／ｍ２を超えて含有させても塗工量に見合う防炎効果の向上は見込めず、２０ｇ／ｍ２以下であるとより好ましい。 The content of the flame retardant contained in the paper layer 11 after drying is preferably 5 g / m 2 or more and 100 g / m 2 or less. When the amount is less than 5 g / m 2 , the flameproof effect is insufficient, and even if the content exceeds 100 g / m 2 , an improvement in the flameproof effect commensurate with the coating amount cannot be expected, and is 20 g / m 2 or less. More preferred.
無機質層１２は、炭酸カルシウム、カオリン、二酸化チタンからなる顔料のうち少なくとも一つを含み、ラテックスやアクリル樹脂などからなる有機バインダーによりそれら顔料を上記紙の表面上に固定したものである。具体的には、上記顔料と有機バインダーとを水又は溶剤中に分散させた混合液を、刷毛やスプレーなどにより上記紙上に塗工して形成する。 The inorganic layer 12 includes at least one of pigments made of calcium carbonate, kaolin, and titanium dioxide, and these pigments are fixed on the surface of the paper with an organic binder made of latex or acrylic resin. Specifically, a mixed liquid in which the pigment and the organic binder are dispersed in water or a solvent is applied onto the paper by using a brush or a spray.
次に、第二の実施形態について説明する。図２はこの発明にかかる防炎段ボールに用いる防炎紙の、第二の実施形態にかかる防炎紙２２の断面図である。この防炎紙２２は、紙層１１ａと、無機質層１２と、難燃剤コーティング層１３とを順に積層した積層体である。 Next, a second embodiment will be described. FIG. 2 is a cross-sectional view of the flameproof paper 22 according to the second embodiment of the flameproof paper used for the flameproof cardboard according to the present invention. The flameproof paper 22 is a laminate in which a paper layer 11a, an inorganic layer 12, and a flame retardant coating layer 13 are laminated in order.
紙層１１ａを形成する紙は、第一の実施形態の紙層１１に用いる紙と同じ紙を用いることができる。一方、上記難燃剤は含浸していてもよいし、含浸していなくてもよい。上記難燃剤を含浸されたものであると防炎効果はさらに高まるが、この第二の実施形態では難燃剤コーティング層１３があるため、紙層１１ａが上記難燃剤を含浸していなくても十分な防炎効果を発揮する。 As the paper for forming the paper layer 11a, the same paper as that used for the paper layer 11 of the first embodiment can be used. On the other hand, the flame retardant may be impregnated or not impregnated. Although the flameproofing effect is further enhanced when the flame retardant is impregnated, in the second embodiment, since the flame retardant coating layer 13 is present, it is sufficient even if the paper layer 11a is not impregnated with the flame retardant. Exhibits a good flameproofing effect.
無機質層１２は上記の第一の実施形態と同様の条件であればよい。 The inorganic layer 12 should just be the conditions similar to said 1st embodiment.
難燃剤コーティング層１３は、上記難燃剤と、水酸化アルミニウム、酸化チタン、又はその両方と、ポリリン酸塩などのリン系化合物とからなる。具体的な形成方法としては、紙層１１ａ上に無機質層１２を形成させた後、難燃剤コーティング層１３を形成する化合物を水などの溶剤からなる液中で混合して、無機質層１２上に刷毛などで塗工する方法が挙げられる。 The flame retardant coating layer 13 is composed of the above flame retardant, aluminum hydroxide, titanium oxide, or both, and a phosphorus compound such as polyphosphate. As a specific forming method, after the inorganic layer 12 is formed on the paper layer 11a, a compound for forming the flame retardant coating layer 13 is mixed in a liquid composed of a solvent such as water, and the inorganic layer 12 is formed on the inorganic layer 12. The method of coating with a brush etc. is mentioned.
これらの防炎紙２１、防炎紙２２を紙層１１より無機質層１２側を外側に配して段ボールのライナとして用いると、防炎効果を有する防炎段ボールを得ることができる。なお、防炎紙２２の場合は、最外層が難燃剤コーティング層１３となる。 When these flameproof paper 21 and flameproof paper 22 are used as a liner for a corrugated board with the inorganic layer 12 side of the paper layer 11 disposed outside, a flameproof corrugated cardboard having a flameproof effect can be obtained. In the case of the flameproof paper 22, the outermost layer is the flame retardant coating layer 13.
以下、この発明にかかる防炎段ボールの実施形態について説明する。図及び説明では防炎紙２１を用いた例を示すが、いずれの実施形態でも、防炎紙２１の代わりに防炎紙２２を用いてもよい。その場合、紙層１１ａを内側に、すなわち難燃剤コーティング層１３を外側に配してライナとして用いる。 Hereinafter, embodiments of the flameproof cardboard according to the present invention will be described. Although the example using the flameproof paper 21 is shown in the drawings and description, the flameproof paper 22 may be used instead of the flameproof paper 21 in any embodiment. In that case, the paper layer 11a is disposed on the inner side, that is, the flame retardant coating layer 13 is disposed on the outer side, and used as a liner.
防炎段ボールの第一の実施形態について図３の断面図を用いて説明する。
この実施形態にかかる防炎段ボールを得るには、まず防炎紙２１を表ライナとし、中芯２５及び裏ライナ２６が防炎紙２１以外の紙又は古紙からなる段ボールを、通常の段ボールと同様の接着手段により接着する。次に、そうして得た段ボール二枚を、裏ライナ２６同士を合わせて二枚の段ボールを一体化させて完成する。裏ライナ２６同士を合わせる方法としては、接着剤で表面同士を接着させてもよいし、端面を接着テープで留めて一体化させてもよい。このようにして得られた防炎段ボールは、両面の表面に防炎効果を発揮する。紙層１１が難燃剤を含有するため、紙層１１自体も無機質層１２と一体となって防炎効果を発揮し、防炎紙２１が外側から炎と接触して破れるとしても一部に留まり、中芯２５や裏ライナ２６，２６を貫通して、炎が逆側の面まで到達することを防ぐ。炎は逆側の面まで到達しない限り、空気が十分に補給されないために、それ以上段ボールを延焼させることができない。このような仕組みにより中芯２５が焦げる程度で延焼を食い止める防炎性能を発揮できる。
A first embodiment of the flameproof cardboard will be described with reference to the cross-sectional view of FIG.
In order to obtain the flameproof cardboard according to this embodiment, first, the flameproof paper 21 is used as a front liner, and the core 25 and the back liner 26 are made of paper other than the flameproof paper 21 or used paper. It adheres by the adhesion means. Next, two cardboards obtained in this way are completed by combining the two liners together with the back liners 26. As a method of aligning the back liners 26, the surfaces may be bonded with an adhesive, or the end surfaces may be fastened with an adhesive tape and integrated. The flameproof corrugated cardboard thus obtained exhibits a flameproof effect on both surfaces. Since the paper layer 11 contains a flame retardant, the paper layer 11 itself also integrates with the inorganic layer 12 to exhibit a flameproof effect, and even if the flameproof paper 21 comes into contact with the flame from the outside and breaks, it remains in part. This prevents the flame from reaching the opposite surface through the core 25 and the back liners 26 and 26. As long as the flame does not reach the opposite surface, the air is not sufficiently replenished, and the cardboard cannot be further spread. With such a mechanism, it is possible to exhibit a flameproof performance that stops fire spread to the extent that the core 25 burns.
防炎段ボールの第二の実施形態について図４の断面図を用いて説明する。この実施形態にかかる防炎段ボールは、表ライナと裏ライナの両方に、それぞれ無機質層１２を外側に配した防炎紙２１を用い、それぞれを紙又は古紙製の一般的な中芯２７と接着させたものである。この実施形態でも、紙層１１と無機質層１２とが一体となって防炎効果を発揮し、中芯２７が燃えることを防ぐ。 A second embodiment of the flameproof cardboard will be described with reference to the cross-sectional view of FIG. The flameproof corrugated cardboard according to this embodiment uses a flameproof paper 21 having an inorganic layer 12 arranged on the outside for both the front liner and the back liner, and is bonded to a general core 27 made of paper or waste paper. It has been made. Also in this embodiment, the paper layer 11 and the inorganic layer 12 are integrated to exhibit a flameproof effect, and the core 27 is prevented from burning.
防炎段ボールの第三の実施形態について図５を用いて説明する。この実施形態は、第二の実施形態における中芯２７の代わりに、二層の中芯２８、３０と、その間にある中間ライナ２９を有する積層段ボールである。第二の実施形態と同様に、表裏の両方のライナは防炎紙２１からなり、中芯２８，３０が燃えることを防ぐ。 A third embodiment of the flameproof cardboard will be described with reference to FIG. This embodiment is a laminated cardboard having two layers of cores 28 and 30 and an intermediate liner 29 between them instead of the core 27 in the second embodiment. As in the second embodiment, both the front and back liners are made of flameproof paper 21 to prevent the cores 28 and 30 from burning.
防炎段ボールの第四の実施形態について図６の断面図を用いて説明する。この実施形態は、二枚の積層ライナ３２と中芯３３とからなり、積層ライナ３２はいずれも通常のライナ３１と防炎紙２１とを積層させたものであり、防炎紙２１の無機質層１２側が表面に配されている。この実施形態にかかる防炎段ボールを製造するには、予め一般の板紙と防炎紙２１とを合紙して積層ライナ３２を得て、一般的な段ボールと同様の手順により中芯３３と接着させる方法と、一般の板紙からなるライナ３１二枚と中芯３３とで先に段ボールを製造した後、ライナ３１上に、防炎紙２１を無機質層１２側が外側となるように配して接着させる方法とが挙げられる。 A fourth embodiment of the flameproof cardboard will be described with reference to the sectional view of FIG. This embodiment includes two laminated liners 32 and a core 33, and each laminated liner 32 is obtained by laminating a normal liner 31 and flameproof paper 21, and an inorganic layer of the flameproof paper 21. The 12 side is arranged on the surface. In order to manufacture the flameproof corrugated cardboard according to this embodiment, a general linerboard and the flameproof paper 21 are combined with each other to obtain a laminated liner 32 and bonded to the core 33 by the same procedure as that of a general corrugated cardboard. After the corrugated cardboard is first produced with two liners 31 made of general paperboard and the core 33, the flameproof paper 21 is arranged on the liner 31 so that the inorganic layer 12 side is on the outside. And a method of making them.
これらの実施形態において、防炎紙２１（防炎紙２２の場合も含む）を中芯と接着させる際に用いる糊に、上記の難燃剤に用いたリン及び窒素の複合化合物を混合したものを用いると、さらに防炎性能を高めることができる。 In these embodiments, the paste used when adhering the flameproof paper 21 (including the case of the flameproof paper 22) to the core is mixed with the composite compound of phosphorus and nitrogen used in the flame retardant. When used, the flameproof performance can be further enhanced.
これらの防炎段ボールは、箱として用いてもよいし、建材パネルとして用いてもよい。いずれの実施形態も、上記防炎紙２１又は防炎紙２２がライナとして、防炎性能を発揮する側を外側に向けて露出しているので、高い防炎性能を発揮できる。 These flameproof cardboards may be used as boxes or as building material panels. In any of the embodiments, since the flameproof paper 21 or the flameproof paper 22 is exposed as a liner and the side exhibiting the flameproof performance is exposed to the outside, high flameproof performance can be exhibited.
以下、実施例を挙げてこの発明を具体的に示す。防炎性能の試験は、日本防炎協会が規定する試験方法に則り行った。具体的には、試験体を４５℃に傾けて下から６５ｍｍの炎を２分間接炎し、試験後の検体の残炎時間、残じん時間、炭化面積、試験終了１５分後のくすぶりの有無で評価した。試験体のサイズは２９ｃｍ×１９ｃｍで、同仕様の防炎段ボールを二枚、裏ライナの表面同士を貼り合わせたものを用いた。 Hereinafter, the present invention will be specifically described with reference to examples. The flameproof performance test was conducted in accordance with the test method prescribed by the Japan Flameproof Association. Specifically, the test specimen was tilted to 45 ° C., and a 65 mm flame from the bottom was indirectly flamed for 2 minutes. It was evaluated with. The size of the test body was 29 cm × 19 cm, and two flameproof cardboards of the same specification and the surfaces of the back liners were bonded together.
（実施例１ａ〜１ｃ）
紙層として無機質層を含有する紙（レンゴー（株）製、型番：ＣＲＣ２３０、無地。表面に炭酸カルシウムからなる無機質層を約１０質量％分形成している）を用い、これに、無機層側と反対側の面から難燃剤（リン・窒素系、薬液：７０質量％、水：２０質量％、イソプロピルアルコール：１０質量％）を、ｗｅｔ着量が１０．０ｇ／ｍ２となるように含浸させて表ライナを作成した。また、中芯（レンゴー（株）製、型番：ＥＴＳ１２０、一般段ボール用）に、表ライナ側に配する面側から、難燃剤（リン・窒素系、薬液：５０質量％、水：４８質量％、イソプロピルアルコール：２質量％）を、ｗｅｔ着量が３０．０ｇ／ｍ２となるように含浸させた。さらに、裏ライナとして、通常のライナ（レンゴー（株）製、型番：ＲＫＡ２１０）を用意した。これらの表ライナ、中芯、裏ライナを用い、表ライナは無機質層を外表面側に配して、それぞれを接着させて防炎段ボールを得た。このようにして製造した防炎段ボール三枚（１ａ，１ｂ，１ｃ）について、上記の防炎性能の試験を実施した。その結果を表１に示す。また、実施例１ａの試験後の表面写真を図７に示す。いずれも、残炎時間は０秒であり、残じん時間も最小限に食い止めることができ、試験の求める性能をクリアした。
(Examples 1a to 1c)
A paper containing an inorganic layer as a paper layer (manufactured by Rengo Co., Ltd., model number: CRC230, plain. About 10% by mass of an inorganic layer made of calcium carbonate is formed on the surface) is used. Impregnated with a flame retardant (phosphorus / nitrogen, chemical solution: 70% by mass, water: 20% by mass, isopropyl alcohol: 10% by mass) from the surface opposite to the surface so that the wet amount is 10.0 g / m 2 I created a table liner. In addition, flame retardant (phosphorus / nitrogen, chemical: 50% by mass, water: 48% by mass) from the side of the core (made by Rengo Co., Ltd., model number: ETS120, for general corrugated cardboard) on the front liner side , Isopropyl alcohol: 2% by mass) was impregnated so that the wet deposition amount was 30.0 g / m 2 . Furthermore, a normal liner (manufactured by Rengo Co., Ltd., model number: RKA210) was prepared as a back liner. Using these front liner, middle core, and back liner, the front liner was provided with an inorganic layer on the outer surface side and bonded to each other to obtain a flameproof corrugated cardboard. The three flameproof cardboards (1a, 1b, 1c) produced in this way were subjected to the above flameproof performance test. The results are shown in Table 1. Moreover, the surface photograph after the test of Example 1a is shown in FIG. In both cases, the afterflame time was 0 seconds, the residual dust time could be minimized, and the performance required by the test was cleared.
（実施例２ａ〜２ｃ）
実施例１ａ〜１ｃにおいて、表ライナを同型番でオフセット印刷を施したものに変更した以外は同様の手順により防炎段ボールを作成した。その試験結果を表１に示す。また、実施例２ａの試験後の表面写真を図８に示す。いずれも、残炎時間は０秒であり、残じん時間も最小限に食い止めることができ、試験の求める性能をクリアした。
(Examples 2a to 2c)
In Examples 1a to 1c, flameproof corrugated cardboard was prepared by the same procedure except that the front liner was changed to the one with the same model number and subjected to offset printing. The test results are shown in Table 1. Moreover, the surface photograph after the test of Example 2a is shown in FIG. In both cases, the afterflame time was 0 seconds, the residual dust time could be minimized, and the performance required by the test was cleared.
（実施例３ａ〜３ｂ）
実施例１ａ〜１ｃにおいて、表ライナのコートボールから無機質層を５．０質量％に減少させたものを用いた以外は同様の手順により防炎段ボールを作成した。その試験結果を表１に示す。炭化時間がやや長くなったものの、いずれも、残炎時間は０秒であり、残じん時間も最小限に食い止めることができ、試験の求める性能をクリアした。
(Examples 3a to 3b)
In Examples 1a to 1c, flameproof corrugated cardboard was prepared by the same procedure except that the coated layer of the front liner was used by reducing the inorganic layer to 5.0% by mass. The test results are shown in Table 1. Although the carbonization time was slightly longer, the afterflame time was 0 seconds, and the residual dust time could be minimized, clearing the performance required by the test.
（実施例４）
実施例１ａにおいて、中芯に含有させる難燃剤を、ホウ素系難燃剤に変更した以外は同様の手順により防炎段ボールを製造したところ、残炎時間は０となり、残じん時間も最小限に食い止めることができた。ただし、中芯の紙のごわつきが大きく、反りの修正が効かないため、防炎段ボールとしてはやや使いにくいものとなった。
Example 4
In Example 1a, a flameproof corrugated board was manufactured by the same procedure except that the flame retardant contained in the core was changed to a boron-based flame retardant. The afterflame time was 0, and the residual dust time was kept to a minimum. I was able to. However, since the core paper is stiff and correction of the warp is not effective, it is somewhat difficult to use as a flameproof cardboard.
（比較例１〜６）
表ライナとして、無機質層を有さないライナ（レンゴー（株）製、型番：ＲＫＡ２１０）を使用し、難燃剤の塗工量を表１のように変更させた。一方、中芯には実施例１と同じ中芯を、難燃剤を含浸させずに用いた。裏ライナは実施例１と同様とした。実施例１と同様の手順により防炎段ボールを得て、同様の防炎性能の試験を実施した。その結果を表１に示す。比較例１〜４は加熱終了までに全焼してしまい、比較例５及び６は全焼まではしなかったものの、炭化面積が大きく広がっており、防炎試験の基準を満足できなかった。比較例１，４，５、６の試験後の表面写真を、それぞれ図９〜１２に示す。
(Comparative Examples 1-6)
As the front liner, a liner (Rengo Co., Ltd., model number: RKA210) having no inorganic layer was used, and the coating amount of the flame retardant was changed as shown in Table 1. On the other hand, the same core as in Example 1 was used as the core without impregnating the flame retardant. The back liner was the same as in Example 1. A flameproof cardboard was obtained by the same procedure as in Example 1, and the same flameproof performance test was carried out. The results are shown in Table 1. Comparative Examples 1 to 4 were completely burned by the end of heating, and Comparative Examples 5 and 6 were not burned, but the carbonized area was greatly expanded, and the flameproof test standard could not be satisfied. Surface photographs after tests of Comparative Examples 1, 4, 5, and 6 are shown in FIGS.
（比較例７〜９）
上記の実施例１で用いたライナのみについて同様の防炎試験を行ったところ、破れた箇所から裏側に火が回って燃え始め、２４秒後貫通した（比較例７）。実施例１で表ライナに用いた無地の無機質層を有する紙（比較例８）では４３秒で貫通し、実施例２で表ライナに用いた印刷した無機質層を有する紙（比較例９）では４５秒で貫通した。それぞれの試験後の表面写真を図１３〜１５に示す。
(Comparative Examples 7-9)
When only the liner used in the above Example 1 was subjected to the same flameproof test, it started to burn from the torn part and started to burn, and penetrated after 24 seconds (Comparative Example 7). In the paper having the plain inorganic layer used for the front liner in Example 1 (Comparative Example 8), the paper penetrated in 43 seconds, and in the paper having the printed inorganic layer used in the front liner in Example 2 (Comparative Example 9). It penetrated in 45 seconds. The surface photograph after each test is shown in FIGS.
（比較例１０〜１２）
表ライナとして、実施例１で用いたものと同じ無地の無機質層を有する紙を使用し、ホウ素系難燃剤を表１に記載の量だけ含浸させた。また、中芯として、実施例１で用いたものと同じ中芯に、ホウ素系難燃剤を表１に記載の量だけ含浸させた。さらに、裏ライナとしては実施例１と同じライナをそのまま用いた。これらを同様の手順により接着して防炎段ボールを作成した。その試験結果を表１に示す。全焼まではしなかったものの、残じん時間が長く、炭化面積が大きく広がり、防炎試験の基準を満足できなかった。
(Comparative Examples 10-12)
As the front liner, paper having the same plain inorganic layer as that used in Example 1 was used, and a boron-based flame retardant was impregnated by the amount shown in Table 1. Further, as the core, the same core as that used in Example 1 was impregnated with a boron-based flame retardant in an amount shown in Table 1. Further, the same liner as that of Example 1 was used as the back liner. These were bonded by the same procedure to prepare a flameproof cardboard. The test results are shown in Table 1. Although it was not burned up completely, the residual time was long, the carbonization area was widened, and the flameproof test standard could not be satisfied.
（比較例１３）
表ライナとして、無機質層を有さない上記のライナを使用したこと以外は、実施例１ａと同様の手順により、表ライナと中芯のそれぞれにリン・窒素系難燃剤を含浸させた段ボールを得た。防炎試験を行ったところ、比較例７〜９よりは長く炎に耐えたが、最終的には貫通して全焼した。
(Comparative Example 13)
Except for using the above-mentioned liner having no inorganic layer as the front liner, a corrugated cardboard obtained by impregnating each of the front liner and the core with a phosphorus / nitrogen flame retardant is obtained by the same procedure as in Example 1a. It was. When the flameproof test was conducted, it withstood the flame longer than Comparative Examples 7 to 9, but finally penetrated and burned completely.
１１，１１ａ 紙層
１２ 無機質層
１３ 難燃剤コーティング層
２１，２２ 防炎紙
２５，２７，２８，３０，３３ 中芯
２６ 裏ライナ
２９ 中間ライナ
３１ ライナ
３２ 積層ライナ
11, 11a Paper layer 12 Inorganic layer 13 Flame retardant coating layer 21, 22 Flameproof paper 25, 27, 28, 30, 33 Core 26 Back liner 29 Intermediate liner 31 Liner 32 Laminated liner
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015171816A (en) * | 2014-02-18 | 2015-10-01 | 有限会社デジタルプランニングワークコア | Flameproof corrugated cardboard and manufacturing method thereof |
| KR102040283B1 (en) * | 2019-06-27 | 2019-11-04 | 주식회사 제이에스기술 | Manufacturing method of shell powder for paint and paint composition containing it |
| CN110682965A (en) * | 2019-10-23 | 2020-01-14 | 王朝栋 | Electric bus frame of fire prevention gives sound insulation |
| JP2020072005A (en) * | 2018-10-31 | 2020-05-07 | イビデン株式会社 | Heat transfer suppressing sheet for assembled battery, sheet structure, and assembled battery |
| WO2022255367A1 (en) * | 2021-06-03 | 2022-12-08 | レンゴー株式会社 | Flame-retardant corrugated cardboard and method for manufacturing same |
| SE545334C2 (en) * | 2019-04-23 | 2023-07-04 | Re Board Tech Ab | Fire retardant board |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07125117A (en) * | 1993-11-08 | 1995-05-16 | Kamata Dan Board Kogyo Kk | Flame retardant corrugated board |
| US20120052238A1 (en) * | 2010-09-01 | 2012-03-01 | Pregis Innovative Packaging, Inc. | Fire-resistant print board |
-
2011
- 2011-10-25 JP JP2011233923A patent/JP5735900B2/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07125117A (en) * | 1993-11-08 | 1995-05-16 | Kamata Dan Board Kogyo Kk | Flame retardant corrugated board |
| US20120052238A1 (en) * | 2010-09-01 | 2012-03-01 | Pregis Innovative Packaging, Inc. | Fire-resistant print board |
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| JP2020072005A (en) * | 2018-10-31 | 2020-05-07 | イビデン株式会社 | Heat transfer suppressing sheet for assembled battery, sheet structure, and assembled battery |
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