JP4604466B2 - Oil resistant paper - Google Patents
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- JP4604466B2 JP4604466B2 JP2003276155A JP2003276155A JP4604466B2 JP 4604466 B2 JP4604466 B2 JP 4604466B2 JP 2003276155 A JP2003276155 A JP 2003276155A JP 2003276155 A JP2003276155 A JP 2003276155A JP 4604466 B2 JP4604466 B2 JP 4604466B2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/90—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in food processing or handling, e.g. food conservation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Description
本発明は、耐油性を要求される紙製トレー、食品包装紙製容器等の基材として適する耐油性に優れる耐油紙に関するものである。 The present invention relates to an oil-resistant paper excellent in oil resistance, which is suitable as a base material for paper trays, food packaging paper containers and the like that are required to have oil resistance.
耐油紙は「耐油性をもたせた紙の総称。高度に粘性叩解した化学パルプで製造した紙、耐油脂性の材料処理した紙などがある。油脂性食品の包装などに用いられる。」と定義されている（ＪＩＳ Ｚ０１０８参照）。 Oil-resistant paper is defined as "a general term for oil-resistant paper. Paper made of highly viscous beaten chemical pulp, paper treated with oil-resistant materials, etc. Used for packaging of oil-based foods." (See JIS Z0108).
一般的には、耐油性としてはキット値（ＴＡＰＰＩ ＵＭ−５５７）が８以上であることが望ましく、これはサラダ油をはじくレベルである。紙を耐油化するためには、加工処理面の臨界表面張力を油性物質の表面張力より小さくすることが必要である。このような機能を有する薬品を耐油剤と称し、主に過フッ素炭化水素のアクリルレートまたはリン酸エステルなどのフッ素系化合物を用いたものが、従来耐油紙の主流となっていた。 In general, it is desirable for the oil resistance to have a kit value (TAPPI UM-557) of 8 or more, which is a level that repels salad oil. In order to make the paper oil resistant, it is necessary to make the critical surface tension of the processed surface smaller than the surface tension of the oily substance. A chemical having such a function is referred to as an oil-resistant agent, and those using a fluorine-based compound such as a perfluorinated hydrocarbon acrylate or a phosphate ester have been the mainstream of conventional oil-resistant paper.
耐油紙としては、この他にもグラシン紙、ポリエチレン加工紙、塩化ビニリデン加工紙、防湿セロハン及びアルミウム箔ラミネート紙などがあるが、紙の表面張力を下げ，濡れの現象から油の浸透を防止するという点から、やはり、従来フッ素系耐油剤で処埋した加工紙が耐油紙の本命であった。 Other oil-resistant papers include glassine paper, polyethylene-treated paper, vinylidene chloride-treated paper, moisture-proof cellophane, and aluminum foil laminated paper, but reduce the surface tension of the paper and prevent oil penetration from the phenomenon of wetting. From this point of view, processed paper that has been treated with fluorine-based oil-resistant agents has been the favorite of oil-resistant paper.
しかしながら、フッ素系の耐油剤は、耐油性を発現するパーフルオロアルキル基と紙の表面に定着させるためのリン酸エステル基などの官能基を分子の両端に有している。このうち、紙に定着させるための官能基は親水性であり、アニオン性あるいはノニオン性を帯びているのが一般的である。フッ素系耐油剤の耐油性は、リン酸エステル基などがその親水性によって紙に定着すること、パーフルオロアルキル基が紙表面で外側に向けて配向し、加工処理面の表面張力が油性物質の表面張力より低くなることによって発現する。言い換えれば、紙に耐油剤の定着を阻害する物質が存在していると、パーフルオロアルキル基の紙表面での配向が乱れ、耐油性は発現しないという問題があった。 However, fluorine-based oil resistance agents have a functional group such as a perfluoroalkyl group that exhibits oil resistance and a phosphate group for fixing on the surface of paper at both ends of the molecule. Among these, the functional group for fixing on paper is hydrophilic and generally has anionic or nonionic properties. The oil resistance of fluorinated oil-resistant agents is that phosphoric acid ester groups are fixed on the paper due to their hydrophilicity, the perfluoroalkyl groups are oriented outward on the paper surface, and the surface tension of the processed surface is It is expressed by being lower than the surface tension. In other words, if a substance that inhibits the fixing of the oil resistant agent is present on the paper, there is a problem that the orientation of the perfluoroalkyl group on the paper surface is disturbed and the oil resistance is not exhibited.
また、フッ素系耐油剤を用いた耐油紙は、加熱（例えば、１２０℃、１０分）すると紙中に存在するフッ素系耐油剤が熱分解されて自然界において「難分解性」のフッ素系炭化水素が発生し、環境汚染の問題が危惧されている。 In addition, when oil-resistant paper using a fluorine-based oil-resistant agent is heated (for example, at 120 ° C. for 10 minutes), the fluorine-based oil-resistant agent present in the paper is thermally decomposed and becomes “refractory” fluorine-based hydrocarbon in nature. And environmental pollution is a concern.
また、従来フッ素系耐油剤の代替として、例えばポリビニルアルコール（ＰＶＡ）、アクリル、デンプン、ポリエステル系耐油剤からなる薬剤を基材上に塗膜を形成して耐油性を発現する構成の耐油紙であるために通気性に問題があった。 In addition, as an alternative to conventional fluorine-based oil-proofing agents, for example, an oil-resistant paper having a structure that develops oil resistance by forming a coating film on a base material with a drug composed of polyvinyl alcohol (PVA), acrylic, starch, polyester-type oil-proofing agents. Therefore, there was a problem with air permeability.
本発明は、上記の問題点に鑑みてなされたものであって、ＰＶＡ、デンプン等の耐油剤をパルプ繊維を主体とする紙層間に強制的に染み込ませることで塗膜を形成することなく紙層間に耐油性を有する耐油層を形成することで通気性を有し、かつ罫線を設けた罫線部においても十分な耐油性を発揮する、環境配慮型の優れた耐油紙を提供することを目的とするものである。 The present invention has been made in view of the above-mentioned problems, and it is possible to forcibly impregnate an oil-resistant agent such as PVA and starch between paper layers mainly composed of pulp fibers without forming a coating film. An object is to provide an environmentally friendly and excellent oil-resistant paper that has air permeability by forming an oil-resistant layer having oil resistance between layers and that also exhibits sufficient oil resistance even in a ruled line portion provided with a ruled line. It is what.
上記の目的を達成するために、
請求項１に係る発明は、
パルプ繊維を主体とする複数の紙層を積層してなる多層紙における全ての各紙層間に、３ｇ／ｍ２（固形分量）以上の塗布量の耐油剤からなる耐油層が、層間スプレイ装置によ
り塗布形成されてなり、
前記耐油剤が、変性デンプン、アミロース、ポリビニルアルコールの１種または２種以上を混合してなることを特徴とする耐油紙である。
To achieve the above objective,
The invention according to claim 1
An oil-resistant layer composed of an oil-resistant agent having a coating amount of 3 g / m 2 (solid content) or more is provided between all the paper layers in a multilayer paper formed by laminating a plurality of paper layers mainly composed of pulp fibers .
Applied and formed ,
The oil-resistant paper is characterized in that the oil-resistant agent is formed by mixing one or more of modified starch, amylose, and polyvinyl alcohol.
請求項２に係る発明は、
前記変性デンプンが、カチオン化デンプン、エーテルエステル化デンプンであることを特徴とする請求項１記載の耐油紙である。
The invention according to claim 2
It said modified starch is an oil-resistant paper of claim 1 Symbol placement, wherein the cationic starch, an ether ester starch.
請求項３に係る発明は、
前記耐油紙が、パルプ繊維を主体とする紙層を２層積層してなる多層紙であることを特徴とする請求項１または２記載の耐油紙である。
The invention according to claim 3
The oil feed is a oil feed according to claim 1 or 2, wherein the Ru multilayer paper Der formed by laminating a sheet layer composed mainly of pulp fiber 2 layers.
請求項４に係る発明は、
前記耐油剤に柔軟剤が添加されていることを特徴とする請求項１〜３のいずれか１項に記載の耐油紙である。
The invention according to claim 4
The oil resistant paper according to any one of claims 1 to 3 , wherein a softening agent is added to the oil resistant agent.
請求項５に係る発明は、
前記柔軟剤が、エチレングリコール等の炭化水素系非イオン系界面活性剤であることを特徴とする請求項４記載の耐油紙である。
The invention according to claim 5
The oil-resistant paper according to claim 4 , wherein the softening agent is a hydrocarbon nonionic surfactant such as ethylene glycol.
請求項６に係る発明は、
前記耐油紙が、多層漉き合わせ抄紙方法により、パルプ繊維を主体とする複数の紙層を積層してなることを特徴とする請求項１〜５のいずれか１項に記載の耐油紙である。
The invention according to claim 6
The oil-resistant paper according to any one of claims 1 to 5 , wherein the oil-resistant paper is formed by laminating a plurality of paper layers mainly composed of pulp fibers by a multi-layered paper making method.
本発明の耐油紙はフッ素系耐油剤を使用していないので、従来問題となっていた環境汚染の危惧が解消された環境配慮型の耐油紙を提供できる。 Since the oil-resistant paper of the present invention does not use a fluorinated oil-resistant agent, it is possible to provide an environment-friendly oil-resistant paper in which the fear of environmental pollution that has been a problem in the past has been solved.
また、本発明の耐油紙は、通気性をも有することから、例えば、テイクアウト用紙容器にして、内容物として揚げ物などを包装した場合、容器内に蒸気がこもらず内容物の風味が損なわれないという効果を奏するものである。 Further, since the oil-resistant paper of the present invention also has air permeability, for example, when fried food is packaged as a take-out paper container and the contents are packaged, steam does not accumulate in the container and the flavor of the contents is not impaired. This is an effect.
また、本発明の耐油紙をブランクとして容器を成形するために罫線を形成する際、万一その罫線部にクラックが生じた場合でも、パルプ繊維を主体とする複数の紙層を積層してなる構造の多層紙からなることで、パルプ繊維を主体とする複数の紙層中に油分が吸収されて表面に染み出ることを防止できる。 In addition, when forming a ruled line to form a container using the oil-resistant paper of the present invention as a blank, even if a crack occurs in the ruled line part, a plurality of paper layers mainly composed of pulp fibers are laminated. By comprising a multilayer paper having a structure, it is possible to prevent oil from being absorbed into a plurality of paper layers mainly composed of pulp fibers and oozing out to the surface.
本発明の耐油紙は、紙製トレー、食品包装紙製容器等の基材として好適に用いられるのみならず広い用途に使用できるものである The oil-resistant paper of the present invention can be used not only suitably as a base material for paper trays, food wrapping paper containers, but also for a wide range of uses.
以下、本発明の最も好ましい一実施例としての実施形態について図面を参照して説明する。 DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment as a most preferred example of the present invention will be described with reference to the drawings.
図１は、本発明の耐油紙の一例を示す断面図である。本発明の耐油紙は、パルプ繊維を主体とする複数の紙層を積層してなる多層紙の該紙層間に、耐油剤からなる耐油層を設けてなることを特徴とするものである。 FIG. 1 is a cross-sectional view showing an example of the oil-resistant paper of the present invention. The oil-resistant paper of the present invention is characterized in that an oil-resistant layer made of an oil-resistant agent is provided between the paper layers of a multilayer paper formed by laminating a plurality of paper layers mainly composed of pulp fibers.
本発明におけるパルプ繊維を主体とする紙層を形成する紙製材料として、パルプ以外のの副材料、例えば、各種のアニオン性、ノニオン性、カチオン性あるいは両性の歩留まり向上剤および紙力増強剤、サイズ剤、填料、消泡剤、染料、顔料、濾水性向上剤、ＰＨ調整剤、粘剤、防腐剤、防カビ剤などの公知の材料を必要に応じて単独または組み合わせて使用することができる。 As a paper material for forming a paper layer mainly composed of pulp fibers in the present invention, secondary materials other than pulp, for example, various anionic, nonionic, cationic or amphoteric yield improvers and paper strength enhancers, Known materials such as sizing agents, fillers, antifoaming agents, dyes, pigments, drainage improvers, pH adjusters, stickers, preservatives, and fungicides can be used alone or in combination as necessary. .
本発明において使用される上記のパルプ繊維としては、特に限定されず、通常の製紙で使用されるもののいずれもが使用可能である。例えば、針葉樹晒クラフトパルプ（ＮＢＫＰ）、広葉樹晒クラフトパルプ（ＬＢＫＰ）などの化学パルプ、ＧＰやＭＰ機械パルプ等の木材パルプ、ケナフ、麻、綿などの非木材天然パルプ等が使用できる。 The pulp fiber used in the present invention is not particularly limited, and any of those used in ordinary papermaking can be used. For example, chemical pulp such as softwood bleached kraft pulp (NBKP) and hardwood bleached kraft pulp (LBKP), wood pulp such as GP and MP mechanical pulp, non-wood natural pulp such as kenaf, hemp, and cotton can be used.
さらに、必要に応じて、合成高分子を溶融紡糸等により繊維化した合成繊維を上記のパルプ繊維に混抄することもできる。合成繊維としては、ポリエチレン、ポリプロピレン、エチレン・プロピレン共重合体、ポリスチレン、エチレン・酢酸ビニル共重合体等のポリオレフィン系繊維、ポリ塩化ビニル、ポリ塩化ビニリデン、ポリ塩化ビニル・ポリビニルアルコール共重合体、ポリ塩化ビニル・ポリ酢酸ビニル共重合体等のハロゲン含有重合体、ナイロン−６、ナイロン６６等のポリアミド系繊維、ポリエチレンサクシネート、ポリブチレンサクシネート、ポリカプロラクトン、ポリ乳酸、ポリヒドロキシブチレート・ヴァリレート共重合体等の脂肪族ポリエステル繊維、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等の芳香族ポリエステル繊維、アクリロニトリル繊維、またはアクリロニトリルと酢酸ビニル、アクリル酸メチル、アクリル酸、アリルスルホン酸ソーダ、スチレンスルホン酸ソーダ等のビニルモノマーとの共重合体等のアクリル系繊維、ビニロン繊維などがあげられる。また合成高分子を木材パルプに似た多分岐状の繊維にした合成パルプ等があげられる。これらの繊維を単独または組み合わせて使用することができる。 Furthermore, if necessary, a synthetic fiber obtained by fiberizing a synthetic polymer by melt spinning or the like can be mixed with the pulp fiber. Synthetic fibers include polyethylene, polypropylene, ethylene / propylene copolymer, polystyrene, polyolefin fibers such as ethylene / vinyl acetate copolymer, polyvinyl chloride, polyvinylidene chloride, polyvinyl chloride / polyvinyl alcohol copolymer, poly Halogen-containing polymers such as vinyl chloride / polyvinyl acetate copolymer, polyamide fibers such as nylon-6 and nylon 66, polyethylene succinate, polybutylene succinate, polycaprolactone, polylactic acid, polyhydroxybutyrate / valerate Aliphatic polyester fibers such as copolymers, aromatic polyester fibers such as polyethylene terephthalate and polybutylene terephthalate, acrylonitrile fibers, or acrylonitrile and vinyl acetate, methyl acrylate, acrylic acid, acrylic Rusuruhon sodium, acrylic fibers and copolymers of vinyl monomers such as sodium styrenesulfonate, etc. vinylon fibers. In addition, synthetic pulp in which a synthetic polymer is a multi-branched fiber similar to wood pulp can be used. These fibers can be used alone or in combination.
上記の歩留まり向上剤および紙力増強剤としては、具体的には、紙力増強剤、歩留まり向上剤として、ポリアクリルアミド系のカチオン性、ノニオン性、アニオン性及び両性の樹脂、ポリエチレンイミン及びその誘導体、ポリエチレンオキサイド、ポリアミン、ポリアミド、ポリアミドポリアミン及びその誘導体、カチオン性及び両性澱粉、酸化澱粉、カルボキシメチル化澱粉、植物ガム、ポリビニルアルコール、尿素ホルマリン樹脂、メラミンホルマリン樹脂、親水性のポリマー粒子等の有機系化合物、及び硫酸バンド、アルミナゾル、塩基性硫酸アルミニウム、塩基性塩化アルミニウム、塩基性ポリ水酸化アルミニウム等のアルミ化合物、更に硫酸第一鉄、塩化第一鉄あるいはコロイダルシリカ、ベントナイト等の無機系化合物等を組み合わせて使用することができる。 As the above yield improver and paper strength enhancer, specifically, as a paper strength enhancer and yield improver, polyacrylamide-based cationic, nonionic, anionic and amphoteric resins, polyethyleneimine and derivatives thereof Organic materials such as polyethylene oxide, polyamine, polyamide, polyamide polyamine and derivatives thereof, cationic and amphoteric starch, oxidized starch, carboxymethylated starch, vegetable gum, polyvinyl alcohol, urea formalin resin, melamine formalin resin, hydrophilic polymer particles, etc. Compounds, and aluminum compounds such as sulfate band, alumina sol, basic aluminum sulfate, basic aluminum chloride, basic polyaluminum hydroxide, and inorganic compounds such as ferrous sulfate, ferrous chloride or colloidal silica, bentonite Etc. It is possible to use Te Align.
上記のサイズ剤としては、具体的には、ロジン系サイズ剤、石油樹脂系サイズ剤、アルキルケテンダイマー系サイズ剤、アルケニル無水コハク酸系サイズ剤などの各種サイズ剤を使用することができる。 Specific examples of the sizing agent include various sizing agents such as rosin sizing agents, petroleum resin sizing agents, alkyl ketene dimer sizing agents, and alkenyl succinic anhydride sizing agents.
上記の填料としては、具体的には、タルク、カオリン、焼成カオリン、クレー、ケイソウ土、重質炭酸カルシウム、炭酸マグネシウム、水酸化アルミニウム、二酸化チタン、硫酸マグネシウム、シリカ、アルミノ硅酸塩、ベントナイト等の鉱物質填料やポリスチレン
粒子、尿素ホルマリン樹脂粒子等の有機合成填料等が挙げられる。
Specific examples of the filler include talc, kaolin, calcined kaolin, clay, diatomaceous earth, heavy calcium carbonate, magnesium carbonate, aluminum hydroxide, titanium dioxide, magnesium sulfate, silica, aluminosilicate, bentonite, etc. And organic synthetic fillers such as polystyrene particles and urea formalin resin particles.
本発明において使用される耐油剤としては、変性デンプン、アミロース、ポリビニルアルコールの１種または２種以上を混合して用いることができる。上記の変性デンプンとしては、特に、カチオン化デンプン、エーテルエステル化デンプンを用いるのが好ましい。 As the oilproofing agent used in the present invention, one or more of modified starch, amylose and polyvinyl alcohol can be mixed and used. As the modified starch, it is particularly preferable to use cationized starch or etherified starch.
本発明で使用される柔軟剤としては、炭化水素系非イオン系界面活性剤が用いられる。特に、エチレングリコールが好適に用いられる。 As the softening agent used in the present invention, a hydrocarbon-based nonionic surfactant is used. In particular, ethylene glycol is preferably used.
その他の炭化水素系非イオン系界面活性剤として、親水基にエチレングリコール部を含むものも使用できる。具体的には、親水基としてポリエチレングリコール部分を含むものとして、高級アルコールエチレンオキサイド付加物（ポリエチレングリコールラウリルエーテル、ポリオキシエチレンラウリルエーテル、ポリオキシエチレンソルビタンモノラウレート、ポリオキシエチレンモノオレエート、ポリオキシエチレンソルビタンモノオレエート、ポリオキシエチレンソルビタントリオレエートなど）、アルキルフェノールエチレンオキサイド付加物（ポリオキシエチレンラウリルフェノールなど）、脂肪酸エチレンオキサイド付加物（ポリエチレングリコールラウリン酸モノエステル、ポリエチレングリコールラウリン酸ジエステル、ポリエチレングリコールオレイン酸モノエステル、ポリエチレングリコールオレイン酸ジエステルなど）、多価アルコールエチレンオキサイド付加物、高級アルキルアミンエチレンオキサイド付加物、脂肪酸アミドエチレンオキサイド付加物、油脂のエチレンオキサイド付加物、ポリプロピレングリコールエチレンオキサイド付加物、上記エチレンオキサイド付加物の親水性誘導体（ポリオキシエチレンラウリルエーテル硫酸ナトリウム、ポリオキシエチレンラウリルエーテル硫酸トリエタノールアミン、ポリオキシエチレンヤシ油脂肪酸モノエタノールアミドなど）などが挙げられる。 As other hydrocarbon-based nonionic surfactants, those containing an ethylene glycol moiety in the hydrophilic group can also be used. Specifically, higher alcohol ethylene oxide adducts (polyethylene glycol lauryl ether, polyoxyethylene lauryl ether, polyoxyethylene sorbitan monolaurate, polyoxyethylene monooleate, polyoxyethylene monooxylate, and polyoxyethylene monooleate) include those having a polyethylene glycol moiety as a hydrophilic group. Oxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, etc.), alkylphenol ethylene oxide adducts (polyoxyethylene laurylphenol, etc.), fatty acid ethylene oxide adducts (polyethylene glycol lauric acid monoester, polyethylene glycol lauric acid diester, polyethylene) Glycol oleate monoester, polyethylene glycol oleate diester, etc.), polyvalent Lucol ethylene oxide adduct, higher alkyl amine ethylene oxide adduct, fatty acid amide ethylene oxide adduct, fat and oil ethylene oxide adduct, polypropylene glycol ethylene oxide adduct, hydrophilic derivatives of the above ethylene oxide adducts (polyoxyethylene lauryl ether) Sodium sulfate, polyoxyethylene lauryl ether sulfate triethanolamine, polyoxyethylene coconut oil fatty acid monoethanolamide, etc.).
上記の柔軟剤の添加量は、耐油剤に対して０．５〜２０重量％の範囲が好ましい。 The amount of the softening agent is preferably in the range of 0.5 to 20% by weight with respect to the oil proofing agent.
本発明の耐油紙は、上記で得られる構成からなることで、パルプ繊維を主体とする複数の紙層を積層してなる多層紙の該紙層間に、フッ素系耐油剤の代替として優れた耐油性を発現する耐油剤からなる耐油層を設けた、環境配慮型の、通気性を有し、かつ優れた耐油性を有する耐油紙を提供できる。また、本発明の耐油紙はフッ素系耐油剤を使用していないので、従来問題となっていた環境汚染の危惧が解消された環境配慮型の耐油紙を提供できる。また、本発明の耐油紙は、通気性をも有することから、例えば、テイクアウト用紙容器にして、内容物として揚げ物などを包装した場合、容器内に蒸気がこもらず内容物の風味が損なわれないという効果を奏するものである。さらに、図３に示すように、本発明の耐油紙をブランクとして、容器に成形するために罫線を形成し、罫線部を有する場合、万一その罫線部に若干のクラックが生じたとしても、パルプ繊維を主体とする複数の紙層を積層してなる構造の多層紙からなることで、パルプ繊維を主体とする複数の紙層中に油分が吸収されて表面に染み出ることを防止できる効果を奏するものである。 The oil-resistant paper of the present invention is composed of the structure obtained above, so that it is an excellent oil-resistant substitute for a fluorine-based oil-resistant agent between the paper layers of a multilayer paper in which a plurality of paper layers mainly composed of pulp fibers are laminated. It is possible to provide an environment-friendly, oil-resistant paper having an oil-resistant layer made of an oil-resistant agent that exhibits excellent oil resistance and having excellent oil resistance. In addition, since the oil-resistant paper of the present invention does not use a fluorine-based oil-resistant agent, it is possible to provide an environment-friendly oil-resistant paper in which the concern about environmental pollution that has been a problem in the past has been solved. Further, since the oil-resistant paper of the present invention also has air permeability, for example, when fried food is packaged as a take-out paper container and the contents are packaged, steam does not accumulate in the container and the flavor of the contents is not impaired. This is an effect. Furthermore, as shown in FIG. 3, when the oil-resistant paper of the present invention is used as a blank, a ruled line is formed for molding into a container, and if it has a ruled line part, even if a slight crack occurs in the ruled line part, The effect of being able to prevent oil from being absorbed into a plurality of paper layers mainly composed of pulp fibers and oozing out from the surface by comprising a multilayer paper having a structure in which a plurality of paper layers mainly composed of pulp fibers are laminated. It plays.
次に、本発明の耐油紙を製造する方法について以下に説明する。 Next, a method for producing the oil-resistant paper of the present invention will be described below.
本発明の耐油紙は、多層漉き合わせ抄紙方法により、パルプ繊維を主体とする複数の紙層を積層してなり、その紙層間に設けられる耐油剤からなる耐油層が、多層漉き合わせ抄紙方法における層間スプレイ装置により形成されて製造される。その製造手段としては、例えば、丸網抄紙機を用いた多層漉き抄紙方法や長網もしくは短網抄紙機を用いた多層漉き抄紙方法を挙げることができる。 The oil-resistant paper of the present invention is formed by laminating a plurality of paper layers mainly composed of pulp fibers by a multi-layered paper making method, and an oil-resistant layer made of an oil-resistant agent provided between the paper layers is used in the multi-layered paper making method. It is formed and manufactured by an interlayer spray device. Examples of the production means include a multi-layer paper making method using a round net paper machine and a multi-layer paper making method using a long net paper machine or a short net paper machine.
図４は、丸網抄紙機を用いた多層漉き抄紙方法による本発明の耐油紙の製造方法における一実施例としての製造工程の要部説明図である。図５は、長網抄紙機を用いた多層漉き
抄紙方法による本発明の耐油紙の製造方法における一実施例としての製造工程の要部説明図である。
FIG. 4 is an explanatory view of a main part of a manufacturing process as one embodiment in the method for manufacturing oil-resistant paper of the present invention by a multilayer papermaking method using a round net paper machine. FIG. 5 is an explanatory view of the main part of the manufacturing process as one embodiment in the method of manufacturing the oil-resistant paper of the present invention by the multilayer papermaking method using a long paper machine.
丸網抄紙機を用いた多層漉き抄紙方法による本発明の耐油紙の製造方法における抄紙機として、図４に示すように、例えば４層漉き抄紙機４０は、第１バット４１、第２バット４２、第３バット４３、第４バット４４が直列に配設され、各バット４１〜４４の内上部に、第１丸網４５、第２丸網４６、第３丸網４７、第３丸網４８がそれぞれ平行に横架されている。各丸網４５〜４８上部には各丸網と接触．離脱可能にクーチロール４９が平行に横架されている。前記第１バット４１の後方には駆動ロール５０、第４バット４４の前方にはブレストロール５１が配設され、各丸網４４〜４８の上でクーチロール４９の下に挾まれた回転無端帯５２が駆動ロール５０とブレストロール５１間に架設されている。図中符号５３は、ガイドロール、５４は、サクションロール、５５は脱水用回転無端帯である。以上の構成におて、回転無端帯５２と各丸網４５〜４８は同速回転をすると、回転無端帯５２にまず第１バット４１内の第１紙料が第１丸網４５によって転着され、次いで第１紙料による湿紙の上に第２バット４２内の第２紙料が第２丸網４６によって接合され、次いで第２紙料による湿紙の上に第３バット４３内の第３紙料が第３丸網４７によって接合され、続いて第３紙料による湿紙の上に第４バット４４内の第４紙料が第４丸網４８よって接合されて４層が接合された湿紙が形成される。この抄紙過程で、回転無端帯５２上に走行方向に対して直角にスプレーノズルを有する層間スプレー装置（図示せず）により、各紙層間に耐油剤を含む水溶液をスプレーされて耐油剤からなる耐油層が形成される。その耐油層を層間に設けた湿紙がクーチロール４９で脱水されブレストロール５１で折り返して、途中で更に脱水され、駆動ロール５０部分で脱水装置（図示せず）に移動し、乾燥装置（図示せず）で乾燥され、これによって４層積層厚紙からなる耐油紙が形成される。 As shown in FIG. 4, for example, a four-layer paper machine 40 includes a first butt 41 and a second butt 42 as a paper machine in the method for producing oil-resistant paper of the present invention by a multi-layer paper machine method using a round paper machine. The third bat 43 and the fourth bat 44 are arranged in series, and the first round net 45, the second round net 46, the third round net 47, and the third round net 48 are provided in the upper part of each of the bats 41 to 44. Are laid horizontally in parallel. The upper part of each round net 45-48 is in contact with each round net. A couch roll 49 is horizontally mounted so as to be detachable. A drive roll 50 is disposed behind the first butt 41, and a breast roll 51 is disposed in front of the fourth bat 44. A rotating endless belt 52 sandwiched under the couch roll 49 on each of the round nets 44-48. Is constructed between the drive roll 50 and the breast roll 51. In the drawing, reference numeral 53 is a guide roll, 54 is a suction roll, and 55 is a rotating endless belt for dehydration. In the above configuration, when the rotating endless belt 52 and each of the round nets 45 to 48 rotate at the same speed, the first stock in the first bat 41 is first transferred to the rotating endless belt 52 by the first round net 45. Then, the second stock in the second vat 42 is joined on the wet paper by the first stock by the second round net 46, and then in the third bat 43 on the wet paper by the second stock. The third stock is joined by the third round net 47, and then the fourth stock in the fourth bat 44 is joined by the fourth round net 48 on the wet paper by the third stock, and the four layers are joined. A wet web is formed. In this paper making process, an oil-resistant layer made of an oil-resistant agent is sprayed on the rotating endless belt 52 by an interlayer spray device (not shown) having a spray nozzle perpendicular to the running direction between each paper layer. Is formed. The wet paper provided with the oil-resistant layer is dewatered by the couch roll 49, folded back by the breast roll 51, further dewatered in the middle, moved to the dewatering device (not shown) at the drive roll 50, and then the drying device (not shown). To form an oil-resistant paper made of four-layer laminated cardboard.
なお、第４バット以降に、さらに複数のバットを配設することにより、さらに多層構成の耐油紙が得られる。 It should be noted that an oil resistant paper having a further multilayer structure can be obtained by arranging a plurality of bats after the fourth bat.
また、長網抄紙機を用いた多層漉き抄紙方法による本発明の耐油紙の製造方法における抄紙機として、図５に示すように、例えば３層漉きの抄紙装置６０は、プーリ６３，６４にエンドレス状に回転するよう巻回された抄紙ワイヤ（図では短網）６２と、その一端に保持され、第１の製紙原料を抄紙ワイヤ６２に供給する第１のヘッドボックス６５と、抄紙ワイヤ６２上に供給された第１の製紙原料がシート状に形成される以前の部位に、第２、第３の製紙原料を供給するよう設けられた第２、第３のヘッドボックス６６，６７とから構成されている。６８は、抄紙ワイヤ６２を支持して製紙原料が自然に脱水するよう構成したテーブルロール、６９は、製紙原料から強制脱水するためのサクションボックスである。 Further, as shown in FIG. 5, for example, a three-layer paper-making apparatus 60 includes endless pulleys 63 and 64 as a paper machine in the method for producing oil-resistant paper of the present invention by a multi-layer paper making method using a long paper machine. A papermaking wire (short mesh in the figure) 62 wound so as to rotate in a shape, a first head box 65 that is held at one end and supplies the first papermaking raw material to the papermaking wire 62, and the papermaking wire 62 The second and third headboxes 66 and 67 are provided so as to supply the second and third papermaking raw materials to the portion before the first papermaking raw material supplied to the sheet is formed into a sheet shape. Has been. 68 is a table roll configured to support the papermaking wire 62 so that the papermaking raw material is dehydrated naturally, and 69 is a suction box for forced dehydration from the papermaking raw material.
すなわち、上記第１のヘッドボックス６５の前方にはフォーミングボードと称するガイド６１が設けられており、製紙原料を一定の膜厚で供給するようになっている。製紙原料がテーブルロール８で脱水されて行くにしたがい、上記膜厚は低下する。その後製紙原料が紙の状態になる以前の部位に、順流型の第２のヘッドボックス６６が保持され、あまり間隔を置かないで逆流型の第３のヘッドボックス６７が保持されている。製紙原料はその後紙の状態になり、フェルト（図示せず）等で抄紙ワイヤ６２上から移送されて強制乾燥されるのである。 That is, a guide 61 called a forming board is provided in front of the first head box 65 so as to supply a papermaking raw material with a constant film thickness. As the papermaking raw material is dehydrated by the table roll 8, the film thickness decreases. Thereafter, the forward-flow type second head box 66 is held at a site before the papermaking raw material is in a paper state, and the reverse-flow type third head box 67 is held without much interval. The papermaking raw material then becomes a paper state, and is transported from the papermaking wire 62 with a felt (not shown) or the like and forcedly dried.
第１のヘッドボックス６５から供給されて上記ガイド６１上で地合混合の状態から、抄紙ワイヤ６２上において製紙原料がシート状に形成される以前の、第２、第３のヘッドボックス６６，６７から第２、第３の製紙原料を供給される段階で地合が形成される。その後抄紙ワイヤ６２上において脱水されシート形成過程で、抄紙ワイヤー６２上に走行方向
に対して直角にスプレーノズルを有する層間スプレー装置（図示せず）により、各紙層間に耐油剤を含む水溶液をスプレーされて耐油剤からなる耐油層が形成される。
The second and third head boxes 66 and 67 before the papermaking raw material is formed into a sheet shape on the papermaking wire 62 from the state of being mixed on the guide 61 and supplied from the first head box 65. Is formed at the stage where the second and third papermaking raw materials are supplied. Thereafter, the sheet is dehydrated on the paper making wire 62 and, in the sheet forming process, an aqueous solution containing an oil resistance agent is sprayed between the paper layers by an interlayer spray device (not shown) having a spray nozzle perpendicular to the running direction on the paper making wire 62. Thus, an oil resistant layer made of an oil resistant agent is formed.
なお、第３のヘッドボックス以降に、さらに複数のヘッドボックスを配設することにより、さらに多層構成の耐油紙が得られる。 In addition, by arranging a plurality of head boxes after the third head box, an oil resistant paper having a multilayer structure can be obtained.
パルプを主体とするパルプ濃度が０．５重量％のパルプスラリーからなる製紙原料を準備し、丸網抄紙機を用いて２層漉き抄紙により、１層目と２層目との層間に抄紙機に具備層間スプレイ装置により、耐油剤としてエーテルエステル化澱粉を用いて、このエーテルエステル化澱粉に対して、柔軟剤としてエチレングリコールを５重量％添加した耐油剤水溶液を、抄紙機上で、塗布量４ｇ／ｍ2（固形分量）の耐油剤からなる耐油層を形成した坪量２００ｇ／ｍ2の本発明の耐油紙を作成した。 A papermaking raw material made of pulp slurry consisting mainly of pulp and having a pulp concentration of 0.5% by weight is prepared, and a paper machine is provided between the first and second layers by two-layer papermaking using a round net paper machine. Using an ether-esterified starch as an oil-resistant agent, an oil-resistant aqueous solution in which 5% by weight of ethylene glycol is added as a softener to the ether-esterified starch is applied on a paper machine using an interlayer spray device. An oil-resistant paper of the present invention having a basis weight of 200 g / m 2 in which an oil-resistant layer composed of an oil-resistant agent having a solid content of 4 g / m 2 was formed.
パルプを主体とするパルプ濃度が０．５重量％のパルプスラリーからなる製紙原料を準備し、丸網抄紙機を用いて６層漉き抄紙により、各紙層間に抄紙機に具備する層間スプレイ装置により、耐油剤としてエーテルエステル化澱粉を用いて、このエーテルエステル化澱粉に対して、柔軟剤としてエチレングリコールを５重量％添加した耐油剤水溶液を、塗布量３ｇ／ｍ2（固形分量）の耐油剤からなる耐油層を形成した坪量３５０ｇ／ｍ2の本発明の耐油紙を作成した。 Prepare a papermaking raw material consisting of pulp slurry with a pulp concentration of 0.5% by weight mainly composed of pulp, using a 6-layer papermaking machine using a round net paper machine, an interlayer spray device provided in the paper machine between each paper layer, Using ether-esterified starch as an oil-resistant agent, an oil-resistant aqueous solution in which 5% by weight of ethylene glycol is added as a softening agent to this ether-esterified starch is applied from an oil-resistant agent with a coating amount of 3 g / m 2 (solid content). An oil-resistant paper of the present invention having a basis weight of 350 g / m 2 and having an oil-resistant layer formed thereon was prepared.
本発明の耐油紙に対する比較例として、パルプを主体とするパルプ濃度が０．５重量％のパルプスラリーからなる製紙原料を準備し、丸網抄紙機を用いて６層漉き抄紙により、各紙層間に抄紙機に具備する層間スプレイ装置により、耐油剤として尿素リン酸澱粉を用いた耐油剤水溶液を、抄紙機上で塗布して、塗布量１ｇ／ｍ2（固形分量）の耐油剤からなる耐油層を形成した坪量３５０ｇ／ｍ2の耐油紙を作成した。 As a comparative example for the oil-resistant paper of the present invention, a papermaking raw material comprising a pulp slurry mainly composed of pulp and having a pulp concentration of 0.5% by weight is prepared, and a 6-layer paper making machine is used between each paper layer using a round net paper machine. An oil-resistant layer comprising an oil-resistant agent having a coating amount of 1 g / m 2 (solid content) is applied on a paper machine by an interlayer spray device provided in the paper machine, and an oil-resistant aqueous solution using urea phosphate starch as an oil-resistant agent is applied on the paper machine. An oil-resistant paper having a basis weight of 350 g / m 2 was prepared.
比較例として一般市販の耐油コート紙を用いた。 As a comparative example, a commercially available oil-resistant coated paper was used.
＜平面耐油度＞
Ｋｉｔ試薬により耐油紙の平面部の耐油度を測定した。
＜罫線耐油度＞
耐油紙に下記の設定の木型により罫線高さ２００μｍの罫線を入れて、Ｋｉｔ試薬により耐油紙の罫線部の耐油度を測定した。
<Plate oil resistance>
The oil resistance of the flat part of the oil-resistant paper was measured with a Kit reagent.
<Rule oil resistance>
A ruled line with a ruled line height of 200 μm was put on the oil-resistant paper using the following set of wooden patterns, and the oil resistance of the ruled-line part of the oil-resistant paper was measured with a Kit reagent.
罫線設定・・・罫幅１．０ｍｍの丸罫
面板設定・・・溝幅１．６ｍｍ、深さ０．５ｍｍ
＜吸油性＞
０．１ｃｃのひまし油を滴下し１０秒後に紙表面に油が残っているかで、◎・・・優、○・・・良、×・・・不可の３段階評価を行った。
＜油表ヌケ性＞
吸油テストを行った用紙の反対面に表染みが現れているかを目視で、◎・・・優、○・・・良、×・・・不可の３段階評価を行った。
＜吸水性＞
０．１ｃｃの蒸留水を滴下し１０秒後に紙表面に油が残っているかで、◎・・・優、○・・・良、×・・・不可の３段階評価を行った。
＜透気度＞
ガーレ試験機法（ＪＩＳ Ｐ８１１７）により、透気抵抗度（面積６４２ｍｍの紙を空気１００ｍｌが透過する時間）を測定し、透気度を求めた。
Ruled line setting ... Round ruler with ruled width 1.0mm Face plate setting ... Groove width 1.6mm, depth 0.5mm
<Oil absorption>
Based on whether 0.1 cc of castor oil was dropped and the oil remained on the paper surface after 10 seconds, a three-step evaluation was performed: ◎ ... excellent, ○ ... good, × ... impossible.
<Oil surface leakage>
The surface of the paper on which the oil absorption test was performed was visually evaluated on the opposite side to make a three-step evaluation: ◎ ... excellent, ○ ... good, × ... impossible.
<Water absorption>
Based on whether 0.1 cc of distilled water was added dropwise and oil remained on the paper surface after 10 seconds, a three-step evaluation was performed: ◎ ... excellent, ○ ... good, × ... impossible.
<Air permeability>
The air permeation resistance (the time required for 100 ml of air to pass through paper having an area of 642 mm) was measured by the Gurley tester method (JIS P8117) to determine the air permeance.
表より明らかに、本発明の耐油紙（実施例１、２）は、実施例３および４（比較例）と比較して、平面耐油度、罫線耐油度のいずれもＫｉｔ値で６以上を有し耐油性に優れるものである。また、吸油性、油表ヌケ性、吸水性についても優れている。さらに、本発明の耐油紙は、透気度１００〜３００秒の値を示し、このことは本発明の耐油紙を、例えば、テイクアウト用紙容器にして内容物として揚げ物などを包装した場合、容器内に蒸気がこもらず内容物の風味が損なわれないという効果を奏するものである。 As is apparent from the table, the oil-resistant paper (Examples 1 and 2) of the present invention has a Kit oil value of 6 or more for both the planar oil resistance and the ruled line oil resistance compared to Examples 3 and 4 (Comparative Example). It has excellent oil resistance. Moreover, it is excellent also in oil-absorbing property, oil surface leakage property, and water absorption. Furthermore, the oil-resistant paper of the present invention exhibits a value of air permeability of 100 to 300 seconds, which means that when the oil-resistant paper of the present invention is used, for example, as a take-out paper container and fried food is packaged as contents, The steam does not accumulate and the flavor of the contents is not impaired.
本発明の耐油紙は、耐油性を要求される紙製トレー、テイクアウト用などの食品包装紙製容器の基材として好適に使用することができるものである。 The oil-resistant paper of the present invention can be suitably used as a substrate for food packaging paper containers such as paper trays and take-outs that require oil resistance.
１０、２０、３０・・・耐油紙
１・・・パルプを主体とする紙層
２・・・耐油剤からなる耐油層
３・・・罫線部
４０・・・丸網抄紙機を用いた多層漉き抄紙機
４１・・・第１バット
４２・・・第２バット
４３・・・第３バット
４４・・・第４バット
４５・・・第１丸網
４６・・・第２丸網
４７・・・第３丸網
４８・・・第４丸網
４９・・・クーチロール
５０・・・駆動ロール
５１・・・プレストロール
５２・・・無端回転帯
５３・・・ガイドロール
５４・・・サクションロール
５５・・・脱水用無端回転帯
６０・・・長網（短網）抄紙機を用いた多層漉き抄紙機
６１・・・ガイド
６２・・・抄紙ワイヤー
６３、６４・・・プーリー
６５・・・第１のヘッドボックス
６６・・・第２のヘッドボックス
６７・・・第３のヘッドボックス
６８・・・テーブルロール
８９・・・サクションボックス
DESCRIPTION OF SYMBOLS 10, 20, 30 ... Oil resistant paper 1 ... Paper layer which mainly consists of pulp 2 ... Oil resistant layer which consists of oil resistant agent 3 ... Ruled line part 40 ... Multi-layer paper using a round net paper machine Paper machine 41 ... 1st bat 42 ... 2nd bat 43 ... 3rd bat 44 ... 4th bat 45 ... 1st round net 46 ... 2nd round net 47 ... 3rd round net 48 ... 4th round net 49 ... Couch roll 50 ... Drive roll 51 ... Presto roll 52 ... Endless rotation band 53 ... Guide roll 54 ... Suction roll 55 ..Endless rotating belt for dehydration 60 ... Multi-layer paper making machine using long (short) paper machine 61 ... Guide 62 ... Paper making wire 63, 64 ... Pulley 65 ... First Head box 66 ... second head box 67 ... third head Box 68 ... table roll 89 ... suction box
Claims (6)
前記耐油剤が、変性デンプン、アミロース、ポリビニルアルコールの１種または２種以上を混合してなることを特徴とする耐油紙。 An oil-resistant layer composed of an oil-resistant agent with a coating amount of 3 g / m 2 (solid content) or more is applied by an interlayer spray device between all the paper layers in a multilayer paper formed by laminating a plurality of paper layers mainly composed of pulp fibers. Formed ,
The oil resistant paper, wherein the oil resistant agent is formed by mixing one or more of modified starch, amylose, and polyvinyl alcohol.
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| JP2003276155A JP4604466B2 (en) | 2003-07-17 | 2003-07-17 | Oil resistant paper |
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| Application Number | Priority Date | Filing Date | Title |
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| JP2003276155A JP4604466B2 (en) | 2003-07-17 | 2003-07-17 | Oil resistant paper |
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| JP4604466B2 true JP4604466B2 (en) | 2011-01-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5415726B2 (en) * | 2008-08-08 | 2014-02-12 | 新日本無線株式会社 | Design method and design apparatus |
| JP5835093B2 (en) * | 2012-05-14 | 2015-12-24 | 王子ホールディングス株式会社 | Oil resistant paper and method for producing oil resistant paper |
| JP7114905B2 (en) * | 2018-01-17 | 2022-08-09 | 王子ホールディングス株式会社 | Paper substrate for foam insulation paper container, sheet for foam insulation paper container and foam insulation paper container |
| KR102373880B1 (en) * | 2020-09-10 | 2022-03-16 | 아세아제지(주) | Raw paper for fresh food |
| KR102623422B1 (en) * | 2022-03-07 | 2024-01-10 | 아세아제지주식회사 | Fresh food packaging box made of fresh food raw paper |
| WO2023189698A1 (en) * | 2022-03-31 | 2023-10-05 | 三菱瓦斯化学株式会社 | Oxygen scavenger packaging material and oxygen scavenger package |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05286088A (en) * | 1984-01-17 | 1993-11-02 | Kohjin Co Ltd | Oil-resistant food preservation equipment |
| JPH11323781A (en) * | 1998-05-13 | 1999-11-26 | Nippon Synthetic Chem Ind Co Ltd:The | Composition for paper conversion |
| JP2001254292A (en) * | 2000-03-08 | 2001-09-21 | Kuraray Co Ltd | Method for producing converted paper |
| JP2002069889A (en) * | 2000-07-07 | 2002-03-08 | Natl Starch & Chem Investment Holding Corp | Coating agent for paper product |
| JP2002179044A (en) * | 2000-10-03 | 2002-06-26 | Oji Paper Co Ltd | Paper molded container and manufacturing method thereof |
| JP2002266294A (en) * | 2001-03-01 | 2002-09-18 | Oji Paper Co Ltd | Base paper for molded container and molded container using the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1022888A (en) * | 1963-09-16 | 1966-03-16 | Staley Mfg Co A E | Coated paper |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05286088A (en) * | 1984-01-17 | 1993-11-02 | Kohjin Co Ltd | Oil-resistant food preservation equipment |
| JPH11323781A (en) * | 1998-05-13 | 1999-11-26 | Nippon Synthetic Chem Ind Co Ltd:The | Composition for paper conversion |
| JP2001254292A (en) * | 2000-03-08 | 2001-09-21 | Kuraray Co Ltd | Method for producing converted paper |
| JP2002069889A (en) * | 2000-07-07 | 2002-03-08 | Natl Starch & Chem Investment Holding Corp | Coating agent for paper product |
| JP2002179044A (en) * | 2000-10-03 | 2002-06-26 | Oji Paper Co Ltd | Paper molded container and manufacturing method thereof |
| JP2002266294A (en) * | 2001-03-01 | 2002-09-18 | Oji Paper Co Ltd | Base paper for molded container and molded container using the same |
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