JP2008169515A - Paper - Google Patents
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- JP2008169515A JP2008169515A JP2007004547A JP2007004547A JP2008169515A JP 2008169515 A JP2008169515 A JP 2008169515A JP 2007004547 A JP2007004547 A JP 2007004547A JP 2007004547 A JP2007004547 A JP 2007004547A JP 2008169515 A JP2008169515 A JP 2008169515A
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本発明は、竹を含有した紙とその製造方法に関するものであり、更に詳しくは、均一性と強度に優れ、抗菌性、有機ガス吸着性を有する、工業スケールでの連続生産が可能な竹繊維及び／又は竹粒子を含有する紙に関する。 The present invention relates to paper containing bamboo and a method for producing the same, and more specifically, bamboo fiber having excellent uniformity and strength, antibacterial properties, and organic gas adsorbability, and capable of continuous production on an industrial scale. And / or paper containing bamboo particles.
紙は元来木材パルプ等を原料にした基本的には環境に優しい（エコ）素材であり、環境問題、衛生を考慮した紙への高機能化が達成できれば、その価値は計り知れない。通常紙は、広葉樹、針葉樹のパルプを原料としていることは、例えば、特許文献１に開示されている。
例えば、壁紙という用途を考えると、接着剤やその他の建材から発生する揮発性有機低分子化合物によるシックハウス問題やタバコのにおい、カビといった問題がある。石油由来の化学薬品を用いることなく、これらの問題を解決できるものができれば大きな市場を獲得できる。
Paper is basically an environmentally friendly (eco) material that uses wood pulp as a raw material, and its value is immeasurable if it can achieve high functionality for paper in consideration of environmental issues and hygiene. For example, Patent Document 1 discloses that normal paper uses hardwood and softwood pulp as a raw material.
For example, when considering the use of wallpaper, there are problems such as sick house problems due to volatile organic low-molecular compounds generated from adhesives and other building materials, smells of tobacco, and mold. If we can solve these problems without using chemicals derived from petroleum, we can win a large market.
また、紙の大きな用途として包装材市場がある。これらの用途についても、化学薬品処理をすることなく抗菌性、におい除去性が優れた紙が工業的に生産できたならば、その価値は計り知れない。このような課題を解決するために、竹繊維を木材パルプに混ぜて紙とすることを本発明者らは考えた。竹を物理的、あるいは化学的に小さくして短繊維状にする技術はいくつか知られており、例えば、特許文献２に開示されている。また、例えば特許文献３には、竹不織布を壁紙にできることが開示されている。更に、観光地などで手工業的に紙すきして、竹繊維の入った紙は販売されている。しかしながら、均一性と強度に優れ、抗菌性、有機ガス吸着性を有し、かつ工業的規模での連続生産が可能な竹繊維及び／又は竹粒子を含有する紙については、全く検討されていない。 Another major application of paper is the packaging material market. For these uses, if paper with excellent antibacterial and odor removal properties can be produced industrially without chemical treatment, the value is immeasurable. In order to solve such problems, the present inventors have considered that bamboo fiber is mixed with wood pulp to make paper. Several techniques for making bamboo short physically by chemically or chemically reducing bamboo are known, and are disclosed in Patent Document 2, for example. For example, Patent Document 3 discloses that bamboo nonwoven fabric can be used as wallpaper. In addition, paper containing bamboo fiber is sold by hand industrially in tourist spots. However, papers containing bamboo fibers and / or bamboo particles that have excellent uniformity and strength, antibacterial properties, organic gas adsorption properties, and that can be continuously produced on an industrial scale have not been studied at all. .
本発明は、均一性と強度に優れ、抗菌性、有機ガス吸着性を有し、かつ工業的規模での連続生産が可能な竹繊維及び／又は竹粒子を含有する紙を提供するものである。 The present invention provides a paper containing bamboo fibers and / or bamboo particles that has excellent uniformity and strength, has antibacterial properties and organic gas adsorption properties, and can be continuously produced on an industrial scale. .
本発明者らは、前記の課題を解決するために、紙素材の検討と紙製造方法を詳細に検討した結果、特定の構造を有する竹繊維や竹粒子を有する紙が本発明の課題を解決し得る可能性を見いだし、更に紙の製造方法を鋭意検討の結果、本発明を完成させるに至った。
即ち本発明は、竹繊維及び／又は竹粒子を５〜９０重量％含有し、以下の（１）、（２）の要件を満足することを特徴とする紙、を提供するものである。
（１）破裂強度が０．０５ｋｇ／ｃｍ2 以上
（２）坪量が５〜５００ｇ／ｍ2
In order to solve the above-mentioned problems, the present inventors have studied paper materials and paper manufacturing methods in detail, and as a result, paper having bamboo fibers or bamboo particles having a specific structure solves the problems of the present invention. As a result of diligent research on paper manufacturing methods, the present invention has been completed.
That is, the present invention provides a paper containing 5 to 90% by weight of bamboo fiber and / or bamboo particles and satisfying the following requirements (1) and (2).
(1) Burst strength is 0.05 kg / cm 2 or more (2) Basis weight is 5 to 500 g / m 2
本発明により、均一性と強度に優れ、抗菌性、シックハウス症候群の原因となるホルムアルデヒド等や、果物や食品の腐敗を進めるエチレンガス等の有機ガス吸着性を有し、かつ工業的規模での連続生産が可能な竹繊維及び／又は竹粒子を含有する紙を提供することができた。 According to the present invention, it has excellent uniformity and strength, has antibacterial properties, adsorbability of organic gas such as formaldehyde that causes sick house syndrome, and ethylene gas that promotes the decay of fruits and foods, and is continuous on an industrial scale. A paper containing bamboo fibers and / or bamboo particles that can be produced could be provided.
本発明について、以下具体的に説明する。
本発明の紙は、竹繊維及び／又は竹粒子を５〜９０重量％含有し、以下の（１）〜（２）の要件を満足する紙である。
（１）破裂強度が０．０５ｋｇ／ｃｍ2 以上
（２）坪量が５〜５００ｇ／ｍ2
本発明に用いる竹繊維、竹粒子は、原料植物をそのまま、あるいは乾燥後、粉砕して製造することができる。粉砕方法としては、機械的粉砕、爆砕、アルカリ等を用いた薬品粉砕などが使用できるが、機械的粉砕で製造することが好ましい。爆砕、アルカリ等を用いた薬品粉砕を用いると、破裂強度、抗菌性、有機ガス吸収性が低下するからである。
本発明に用いる竹繊維、竹粒子は、紙中に均一に分散されることと、抗菌性、有機ガス吸着性を高めるためには、比表面積が０．０５〜２００ｍ2 ／ｇであることが好ましく、特に０．１〜１００ｍ2 ／ｇであることが更に好ましい。
The present invention will be specifically described below.
The paper of the present invention contains 5 to 90% by weight of bamboo fibers and / or bamboo particles, and satisfies the following requirements (1) to (2).
(1) Burst strength is 0.05 kg / cm 2 or more (2) Basis weight is 5 to 500 g / m 2
The bamboo fiber and bamboo particles used in the present invention can be produced by pulverizing the raw plant as it is or after drying. As a pulverization method, mechanical pulverization, explosion pulverization, chemical pulverization using alkali or the like can be used, but it is preferable to manufacture by pulverization. This is because explosion strength, antibacterial properties, and organic gas absorbability are lowered when chemical pulverization using explosion or alkali is used.
Bamboo fibers and bamboo particles used in the present invention have a specific surface area of 0.05 to 200 m 2 / g in order to be uniformly dispersed in paper and to improve antibacterial properties and organic gas adsorption properties. Particularly preferred is 0.1 to 100 m 2 / g.
本発明の紙に含まれる竹繊維の長さについて、単糸の直径が５μｍ〜２ｍｍで繊維長Ｌと単糸の直径Ｄの比Ｌ／Ｄが２〜１０００００であることが好ましい。理由はこの範囲で紙にする時の交絡性がよく工業的に安定生産が可能で、破裂強度を高めることができるからである。単糸の直径は５μｍ未満になると、水中で分散しにくくなる。２ｍｍを越えると、交絡がかかりにくくなる場合がある。好ましくは、１０μｍ〜１ｍｍ、更に好ましくは５０μｍ〜８００μｍの範囲である。Ｌ／Ｄは、１００〜６０００であることが好ましく、さらに３００〜５０００で有ることが好ましく、特に好ましい範囲は３５０〜４５００の範囲である。Ｌ／Ｄが１０００００を超える場合はシートの均一性が悪化し、製造条件によっては目的とする紙が得られない場合がある。例えば、繊維直径、繊維長の好ましい組み合わせとしては、直径５μｍ〜１ｍｍ、長さ１〜１０ｍｍ、好ましくは、直径５μｍ〜１ｍｍ、長さ２〜５ｍｍ程度である。
本発明の紙に含まれる竹粒子の形状については、平均粒径が０．０１〜７００μｍが好ましい。理由はこの範囲で紙にする時の交絡性がよく工業的に安定生産が可能で、破裂強度を高めることができるからである。平均粒径を０．０１μｍ未満にしてもよいが、安定してこの形状を作ることは困難である。平均粒径が７００μｍを超えると、分散が不均一になりやすい。好ましくは０．１〜５００μｍの範囲である。
Regarding the length of the bamboo fiber contained in the paper of the present invention, it is preferable that the diameter of the single yarn is 5 μm to 2 mm and the ratio L / D of the fiber length L to the single yarn diameter D is 2 to 100,000. This is because the confounding property when making paper in this range is good, industrially stable production is possible, and the burst strength can be increased. When the diameter of the single yarn is less than 5 μm, it becomes difficult to disperse in water. If it exceeds 2 mm, it may be difficult to entangle. Preferably, it is in the range of 10 μm to 1 mm, more preferably 50 μm to 800 μm. L / D is preferably 100 to 6000, more preferably 300 to 5000, and particularly preferably 350 to 4500. When L / D exceeds 100,000, the uniformity of the sheet deteriorates, and the target paper may not be obtained depending on the production conditions. For example, a preferable combination of fiber diameter and fiber length is 5 μm to 1 mm in diameter and 1 to 10 mm in length, preferably 5 μm to 1 mm in diameter and 2 to 5 mm in length.
About the shape of the bamboo particle contained in the paper of this invention, an average particle diameter of 0.01-700 micrometers is preferable. This is because the confounding property when making paper in this range is good, industrially stable production is possible, and the burst strength can be increased. Although the average particle diameter may be less than 0.01 μm, it is difficult to stably form this shape. When the average particle size exceeds 700 μm, dispersion tends to be non-uniform. Preferably it is the range of 0.1-500 micrometers.
紙中の竹繊維及び／又は竹粒子の混合割合としては、紙の重量を基準として５〜９０重量％である必要がある。５重量％未満では抗菌性が出ず、９０重量％を超えて多くなると破裂強度が小さくなる。これらの特性をうまくバランス良くするために好ましくは１０〜７０重量％であり、更に好ましくは１５〜６０重量％の範囲である。紙中の竹繊維及び／又は竹粒子以外は、通常最も使用されている、広葉樹パルプ、針葉樹パルプ、ケナフ等の竹以外のセルロースを原料とするパルプや、ポリエチレンテレフタレート、ポリトリメチレンテレフタレート、ポリブチレンテレフタレート、ポリ乳酸、アクリル酸、ポリアミド、ポリエチレン、ポリプロピレン、ポリアクリル、酢酸セルロース、アラミド、ポリビニルアルコール等の合成パルプや繊維を用いることができる。また、必要に応じて、接着剤や添加剤、表面塗布剤、表面改質剤、樹脂、ゴム、フィルム等の繊維以外の成分を含んでいてもよい。尚、これらの繊維の形状としては、特に制限はないが、繊維長が０．５〜７５ｍｍの短繊維、単糸繊度が０．１〜２ｃＮ／ｄｔｅｘ、Ｌ／Ｄが５０〜１００００の範囲が好ましい。 The mixing ratio of bamboo fibers and / or bamboo particles in the paper needs to be 5 to 90% by weight based on the weight of the paper. If it is less than 5% by weight, antibacterial properties do not appear, and if it exceeds 90% by weight, the bursting strength decreases. In order to satisfactorily balance these characteristics, the content is preferably 10 to 70% by weight, more preferably 15 to 60% by weight. Other than bamboo fibers and / or bamboo particles in paper, the most commonly used pulps made from cellulose other than bamboo, such as hardwood pulp, conifer pulp, kenaf, polyethylene terephthalate, polytrimethylene terephthalate, polybutylene Synthetic pulps and fibers such as terephthalate, polylactic acid, acrylic acid, polyamide, polyethylene, polypropylene, polyacryl, cellulose acetate, aramid, and polyvinyl alcohol can be used. Moreover, components other than fibers, such as an adhesive agent, an additive, a surface coating agent, a surface modifier, resin, rubber | gum, and a film, may be included as needed. In addition, there is no restriction | limiting in particular as a shape of these fibers, However, The short fiber with a fiber length of 0.5-75 mm, the single yarn fineness is 0.1-2 cN / dtex, L / D is the range of 50-10000. preferable.
本発明の紙は、その坪量（目付）が５〜５００ｇ／ｍ2 であることが必要である。目付が５ｇ／ｍ2 未満の場合、強力の高い紙を得ること困難となる問題、形態保持性が劣り、結果としてシワ発生などの不具合が生じる。坪量の上限については特に制限はないが、紙の均一性、厚みの均一性、表面平滑性等の観点から５００ｇ／ｍ2 以下であることが好ましい。目付のより好ましい範囲は２０〜２５０ｇ／ｍ2 であり、更に好ましい範囲は２０〜１００ｇ／ｍ2 である。
本発明の紙の破裂強度は０．０５ｋｇ／ｃｍ2 以上であることが必要である。破裂強度が０．０５ｋｇ／ｃｍ2 未満では、加工時や加工後には衝撃や突き当て等の外力に対して紙が破損したり、孔があく等の不具合が起こりやすい。貫通強力としては好ましくは０．２ｋｇ／ｃｍ2 以上、より好ましくは０．３ｋｇ／ｃｍ2 以上である。上限は特に制限はないが、通常は１０ｋｇ／ｃｍ2 以下である。
The paper of the present invention needs to have a basis weight (weight per unit area) of 5 to 500 g / m 2 . When the basis weight is less than 5 g / m 2 , there are problems such as difficulty in obtaining a high-strength paper and poor form retention, resulting in problems such as wrinkling. Although there is no restriction | limiting in particular about the upper limit of basic weight, It is preferable that it is 500 g / m < 2 > or less from viewpoints of the uniformity of paper, the uniformity of thickness, surface smoothness, etc. A more preferable range of the basis weight is 20 to 250 g / m 2 , and a more preferable range is 20 to 100 g / m 2 .
The burst strength of the paper of the present invention needs to be 0.05 kg / cm 2 or more. When the bursting strength is less than 0.05 kg / cm 2 , the paper is easily damaged by an external force such as impact or butting during processing or after processing, and defects such as perforation are likely to occur. Through a preferably strong 0.2 kg / cm 2 or more, more preferably 0.3 kg / cm 2 or more. The upper limit is not particularly limited, but is usually 10 kg / cm 2 or less.
また、抗菌性、有機ガス吸着性を高度に発現させ、その効果を長持ちさせるために、通気度が１０〜３００秒／２００ｍｌであることが好ましい。
本発明の竹繊維及び／又は竹粒子を含有する紙は、竹繊維及び／又は竹粒子以外の原料と竹繊維及び／又は竹粒子を予め混合し、スラリーとした上で叩解し互いに高度に分散させた後、抄紙して製造することができる。
竹繊維及び／又は竹粒子以外の原料と竹繊維及び／又は竹粒子との予め混合については、乾燥状態で、あるいはそれぞれを１〜３０重量％のスラリー濃度で水分散させたスラリー溶液を混合してもよい。必要に応じてスラリーを安定させるために、非イオン系、イオン系界面活性剤、金属塩などを混合させてもよい。
Moreover, in order to develop the antibacterial property and the organic gas adsorbability to a high degree and to maintain the effect, it is preferable that the air permeability is 10 to 300 seconds / 200 ml.
The paper containing bamboo fiber and / or bamboo particles of the present invention is prepared by mixing raw materials other than bamboo fiber and / or bamboo particles and bamboo fiber and / or bamboo particles in advance, making them into a slurry and beaten them to highly disperse each other. Then, it can be made by paper.
For mixing the raw materials other than bamboo fiber and / or bamboo particles and bamboo fiber and / or bamboo particles in advance, a slurry solution in which each is dispersed in water in a dry state or at a slurry concentration of 1 to 30% by weight is mixed. May be. In order to stabilize the slurry as necessary, nonionic, ionic surfactants, metal salts and the like may be mixed.
こうして得られたスラリーは、叩解し、互いに高度に分散させることが必要である。叩解方法としては、円錐型リファイナー、円筒型リファイナー、ディスク型リファイナー、ホモジナイザー等を用いることができるが、得られたスラリーが１分間静置状態で竹繊維及び／又は竹粒子以外の原料と竹繊維及び／又は竹粒子が実質的に互いに分離しない条件で叩解することが必要である。このような条件はリファイナーやホモジナイザーの歯とケーシングの距離や回転数を制御することにより可能である。リファイナーやホモジナイザーの歯とケーシングの距離は０．２ｍｍ〜３ｍｍ、リファイナーやホモジナイザーの回転数としては１０００〜１０００００ｒｐｍが、均一分散に好ましい。処理時間としては、１０分から２４時間であり、処理を数段に分けてもよい。 The slurry thus obtained needs to be beaten and highly dispersed in each other. As a beating method, a conical refiner, a cylindrical refiner, a disk refiner, a homogenizer, or the like can be used, but the obtained slurry is allowed to stand for 1 minute with bamboo fibers and / or raw materials other than bamboo particles and bamboo fibers. And / or beating under conditions where the bamboo particles do not substantially separate from each other. Such a condition is possible by controlling the distance between the teeth of the refiner or the homogenizer and the casing and the rotational speed. The distance between the refiner or homogenizer teeth and the casing is preferably 0.2 mm to 3 mm, and the speed of the refiner or homogenizer is preferably 1000 to 100,000 rpm for uniform dispersion. The processing time is 10 minutes to 24 hours, and the processing may be divided into several stages.
こうして得られたスラリーは、必要に応じて大きな不純物をフィルター等で分離した後、抄紙、乾燥を行い、連続的に紙として巻き取ることができる。連続的に巻き取るためには、抄紙をメッシュのベルトの上で行い、乾燥炉を経て連続巻き取り機で巻き取る。この場合、抗菌性を高度に発現させるためには、乾燥温度を１００〜２００℃にすることが好ましい。乾燥温度が２００℃を越えると、抗菌性が低下し、１００℃未満であると乾燥しにくくなる。
本発明の製造方法を用いれば、紙を連続的に、かつ途中で切れたり、坪量、品質に斑なく、幅広かつ長尺で得ることができる。また、品質が均質性故に、巻き上げられた円柱状の紙ロールは安定に解じょ（巻いた紙を用途に応じて取り出し、必要に応じてカットすること）できる。
工業的に連続生産可能な紙は、通常、幅が１ｃｍ〜５００ｃｍ、長さが２ｍ以上（上限は例えば、１０ｋｍ）であり、巻き上げられた円柱状の形状が直径０．５〜５００ｃｍ、幅が１ｃｍ〜５００ｃｍである。均質故に、幅、直径のばらつき誤差は５％以内となる。
The slurry thus obtained can be continuously wound up as paper by separating paper with a large impurity as necessary and then papermaking and drying. In order to wind up continuously, papermaking is performed on a mesh belt, and the paper is taken up by a continuous winder through a drying furnace. In this case, in order to highly develop antibacterial properties, it is preferable to set the drying temperature to 100 to 200 ° C. When the drying temperature exceeds 200 ° C., the antibacterial property decreases, and when it is less than 100 ° C., drying becomes difficult.
If the production method of the present invention is used, the paper can be obtained in a wide and long manner without cutting the paper continuously and in the middle, and without unevenness in basis weight and quality. Further, because of the homogeneity of the quality, the rolled-up cylindrical paper roll can be stably unwound (the rolled paper is taken out according to the use and cut as necessary).
Paper that can be industrially produced continuously usually has a width of 1 cm to 500 cm, a length of 2 m or more (upper limit is, for example, 10 km), a rolled-up columnar shape has a diameter of 0.5 to 500 cm, and a width of 1 cm to 500 cm. Due to the homogeneity, the variation error in width and diameter is within 5%.
次に、実施例などによって本発明を更に具体的に説明するが、本発明はこれら実施例などにより何ら限定されるものではない。
本発明に用いられる各測定値の測定方法は次の通りである。
（１）破裂強度：ＪＩＳ−Ｐ−８１１２に準じる。測定は幅方向から適当に４ヶ所の２００ｍｍ×２５０ｍｍの試験片を採取し、各試験片につき裏表各２回測定し、合計４回測定した（試験条件：２０℃、湿度６５％）。
（２）坪量：一定の面積の重量から算出した。
（３）通気度：ＪＩＳ−Ｐ−８１１７に準じる。ただし、測定は幅方向から適当に４ヶ所の２００ｍｍ×２５０ｍｍの試験片を採取し、試験片を２枚重ねにし１０ｍｍΦを２００ｃｃの空気の透る時間を４ヶ所の平均値を取って透気度とした（試験条件：２０℃、湿度６５％）。
（４）比表面積：ＢＥＴ比表面積法により測定した。
（５）竹繊維の形状：顕微鏡測定で求めた。
（６）竹粒子の平均粒径：日機装（株）マイクロトラック３３００ＥＸIIを用いて測定した。
（７）抗菌性：ＪＩＳ−Ｌ−１９０２、菌液吸収法で求めた。菌は、黄色ぶどう球菌を用いた。数値が大きいほど抗菌性は高く、特に２．２以上で合格とされる。
（８）有機ガス吸収性：５０ｐｐｍのホルムアルデヒド、エチレンが入った５ｌのテドラバックに、紙１０ｇを入れて１０時間後のホルムアルデヒド、エチレンの減少率を求めた。
Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
The measuring method of each measured value used in the present invention is as follows.
(1) Burst strength: According to JIS-P-8112. The measurement was carried out by appropriately collecting four 200 mm × 250 mm test pieces from the width direction, measuring each test piece twice on each side, and measuring a total of four times (test conditions: 20 ° C., humidity 65%).
(2) Basis weight: Calculated from the weight of a certain area.
(3) Air permeability: according to JIS-P-8117. However, for the measurement, 200 mm x 250 mm test specimens were appropriately collected from the width direction, the test specimens were stacked two times, and the air permeance was obtained by taking the average value of four places for 10 mmΦ through 200 cc of air. (Test conditions: 20 ° C., humidity 65%).
(4) Specific surface area: Measured by the BET specific surface area method.
(5) Shape of bamboo fiber: determined by microscopic measurement.
(6) Average particle size of bamboo particles: measured using Nikkiso Microtrack 3300EXII.
(7) Antibacterial properties: determined by JIS-L-1902, bacterial liquid absorption method. As a bacterium, Staphylococcus aureus was used. The larger the value, the higher the antibacterial property, and in particular, it is passed at 2.2 or higher.
(8) Organic gas absorptivity: The reduction rate of formaldehyde and ethylene 10 hours after 10 g of paper was put into 5 l of tedra bag containing 50 ppm of formaldehyde and ethylene.
［実施例１〜３］
長さ３０ｃｍに切出した肉厚が１０ｍｍ程度の円筒状の竹材を、縦に６分割して、１個の切出した竹材当たり、６個の円弧状の竹片を得た。この円弧状の竹片の内側の節を取除き、押し潰すようにして圧砕し、平板状の竹片を製造した。圧砕された竹片を蒸煮装置に入れて、０．４３ＭＰａ、１４３℃の加圧飽和水蒸気で処理した後、切り裂いて細長い粗解繊の繊維束を製造した。次に、この切り裂かれた細長い粗解繊の繊維束を、複数個の解繊ピンを二段に夫々固定した互いに対向する一対の板状回転体を３０００ｒｐｍで回転させて精解繊した。こうして綿状の竹繊維を製造した。こうして得られた竹繊維は直径が１００μｍから７００μｍで、Ｌ／Ｄが５〜３３０であった。また、比表面積は０．５ｍ2 ／ｇであった。こうして得られた竹繊維と広葉樹パルプを表１の比率で混合した１０％水スラリーを調整し、円錐型リファイナー（間隔１ｍｍ、３０００回転、処理時間１時間）で叩解後、連続抄紙し、１５０℃で乾燥後、幅１ｍで直径５０ｃｍのロール状に巻き取った。紙製造工程では切れもなく、安定していた。いずれも幅、厚みの斑は５％以内であった。得られた紙は抗菌性、有機ガス吸収性に優れたものであった。得られた紙の諸物性を表１に示す。
[Examples 1 to 3]
A cylindrical bamboo material having a thickness of about 10 mm cut out to a length of 30 cm was divided into 6 pieces vertically, and 6 arc-shaped bamboo pieces were obtained for each piece of cut bamboo material. The arc-shaped bamboo pieces were removed from the inner nodes, and crushed and crushed to produce flat bamboo pieces. The crushed bamboo pieces were put into a steaming apparatus and treated with pressurized saturated steam at 0.43 MPa and 143 ° C., and then cut to produce an elongated coarsely defibrated fiber bundle. Next, the cut and elongated coarse fiber bundle was finely defibrated by rotating a pair of opposing plate-like rotating bodies each having a plurality of defibrating pins fixed in two stages at 3000 rpm. Thus, a cotton-like bamboo fiber was produced. The bamboo fiber thus obtained had a diameter of 100 μm to 700 μm and an L / D of 5 to 330. The specific surface area was 0.5 m 2 / g. A 10% water slurry in which bamboo fibers and hardwood pulp obtained in this manner were mixed at the ratio shown in Table 1 was prepared, beaten with a conical refiner (interval 1 mm, 3000 revolutions, treatment time 1 hour), continuous papermaking, 150 ° C. And dried in a roll having a width of 1 m and a diameter of 50 cm. The paper manufacturing process was stable and stable. In both cases, the spots of width and thickness were within 5%. The obtained paper was excellent in antibacterial properties and organic gas absorption. Table 1 shows various physical properties of the obtained paper.
［実施例４、５］
孟宗竹を粗粉砕した後、ミキサーとガラスビーズを用いて、平均粒径１５μｍの竹粒子を製造した。この竹粒子を用い、混合比率を表１に示す値に変えて実施例１と同様に紙を製造した。得られた紙は抗菌性、有機ガス吸収性に優れたものであった。得られた紙の諸物性を表１に示す。
［比較例１］
直径が２．２ｍｍ、長さが４ｍｍの竹繊維を用いて、実施例１を繰り返したが破裂強度が低い物であった。得られた紙の諸物性を表１に示す。
［比較例２］
竹繊維や竹粒子を用いずに、実施例１を繰り返した。抗菌性、有機ガス吸収性は劣るものであった。得られた紙の諸物性を表１に示す。
[Examples 4 and 5]
After coarsely crushing Soso bamboo, bamboo particles having an average particle diameter of 15 μm were produced using a mixer and glass beads. Using this bamboo particle, the mixing ratio was changed to the values shown in Table 1, and paper was produced in the same manner as in Example 1. The obtained paper was excellent in antibacterial properties and organic gas absorption. Table 1 shows various physical properties of the obtained paper.
[Comparative Example 1]
Example 1 was repeated using bamboo fibers having a diameter of 2.2 mm and a length of 4 mm, but the burst strength was low. Table 1 shows various physical properties of the obtained paper.
[Comparative Example 2]
Example 1 was repeated without using bamboo fiber or bamboo particles. Antibacterial properties and organic gas absorption were inferior. Table 1 shows various physical properties of the obtained paper.
［比較例３］
円錐型リファイナー（間隔４ｍｍ、５００回転、処理時間１時間）で叩解した以外は、実施例１を繰り返した。破裂強度が低い物であった。得られた紙の諸物性を表１に示す。
［比較例４］
平均粒径８００μｍの竹粒子を用いた以外は実施例４を繰り返したが破裂強度が低い物であった。得られた紙の諸物性を表１に示す。
[Comparative Example 3]
Example 1 was repeated except that it was beaten with a conical refiner (interval 4 mm, 500 revolutions, treatment time 1 hour). The burst strength was low. Table 1 shows various physical properties of the obtained paper.
[Comparative Example 4]
Example 4 was repeated except that bamboo particles having an average particle diameter of 800 μm were used, but the burst strength was low. Table 1 shows various physical properties of the obtained paper.
［参考例１］
実施例１、比較例１の紙を用い、裏紙をつけて壁紙として、４畳半の部屋に貼り付けた。タバコを５本吸って、２時間経過した後、部屋に入ったところ、実施例１の部屋ではたばこ臭が消えていた。
［参考例２］
実施例１、比較例１の紙で、おにぎり、トロの握りすしを包み、４８時間、２５℃で放置した。実施例１の紙ではカビの発生はなかったが、比較例１の紙ではカビが生えた。
［参考例３］
実施例１、比較例１の紙で、コップ、紙のお皿を作成し、牛乳を入れて、２５時間、２５℃で放置した。実施例１の紙、コップ、皿共にカビの発生はなかったが、比較例１の紙ではカビが生えた。
[Reference Example 1]
The paper of Example 1 and Comparative Example 1 was used and attached to a 4 tatami mat room as a wallpaper with a backing paper. After smoking 5 cigarettes and entering 2 hours, the tobacco odor disappeared in the room of Example 1.
[Reference Example 2]
Rice balls and Toro's hand sushi were wrapped with the paper of Example 1 and Comparative Example 1, and left at 25 ° C. for 48 hours. Mold was not generated on the paper of Example 1, but mold was grown on the paper of Comparative Example 1.
[Reference Example 3]
A cup and a paper plate were made with the paper of Example 1 and Comparative Example 1, and milk was placed therein, which was allowed to stand at 25 ° C. for 25 hours. There was no occurrence of mold on the paper, cup and dish of Example 1, but mold was grown on the paper of Comparative Example 1.
本発明の紙は、例えば、家具部材、壁紙等の家具・インテリア用途、各種包装材料、コップ、皿などの食器をはじめ、救急用品、洗浄用品、おしぼり、ナプキン等の衛生用途、ワイパー、ウェットワイパー、クリーニング材等のワイパー用途、空気フィルター、バグフィルター、エレクトレットフィルター等のフィルター用途、布団、布団袋、枕カバー等の寝装用途、べた掛けシート、防草シート、園芸プランター等の農業・園芸用途、収納用品、包装資材、台所用品等の生活資材用途、電気材料、製品材料、機器部材等の工業資材用途等に用いることができる。 The paper of the present invention includes, for example, furniture and interior uses such as furniture members and wallpaper, various packaging materials, cups, dishes such as dishes, emergency supplies, cleaning supplies, towels, sanitary uses such as napkins, wipers, wet wipers , Wiper applications such as cleaning materials, filter applications such as air filters, bag filters, electret filters, bedding applications such as futons, futon bags, pillow covers, etc., agricultural and horticultural applications such as cover sheets, grass protection sheets, garden planters, etc. It can be used for household materials such as storage goods, packaging materials, kitchenware, and industrial materials such as electrical materials, product materials, and equipment members.
Claims (11)
（１）破裂強度が０．０５ｋｇ／ｃｍ2 以上
（２）坪量が５〜５００ｇ／ｍ2 A paper containing 5 to 90% by weight of bamboo fiber and / or bamboo particles and satisfying the following requirements (1) and (2).
(1) Burst strength is 0.05 kg / cm 2 or more (2) Basis weight is 5 to 500 g / m 2
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011184657A (en) * | 2010-03-11 | 2011-09-22 | Moriyama Yuko | Filtration device for edible oil |
| JP2011183329A (en) * | 2010-03-10 | 2011-09-22 | Moriyama Yuko | Filter medium and method for manufacturing the same |
| JP2014136851A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Bamboo fiber sheet |
| JP2014136852A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Method of manufacturing bamboo fiber sheet |
| JP2014136566A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Interior finishing base material for vehicle |
| JP2014169520A (en) * | 2013-02-07 | 2014-09-18 | Nagasaki Kogyo Kk | Adding material for retaining food freshness, paper material for packaging food, and cardboard box for food |
| CN104060499A (en) * | 2014-05-30 | 2014-09-24 | 苏州国昊壁纸有限公司 | Green environmental protection wallpaper with strong breathability |
| CN104074324A (en) * | 2014-05-30 | 2014-10-01 | 苏州国昊壁纸有限公司 | Environment-friendly wallpaper containing bamboo charcoal fiber |
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2007
- 2007-01-12 JP JP2007004547A patent/JP2008169515A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011183329A (en) * | 2010-03-10 | 2011-09-22 | Moriyama Yuko | Filter medium and method for manufacturing the same |
| JP2011184657A (en) * | 2010-03-11 | 2011-09-22 | Moriyama Yuko | Filtration device for edible oil |
| JP2014136851A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Bamboo fiber sheet |
| JP2014136852A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Method of manufacturing bamboo fiber sheet |
| JP2014136566A (en) * | 2013-01-18 | 2014-07-28 | Mitsubishi Motors Corp | Interior finishing base material for vehicle |
| JP2014169520A (en) * | 2013-02-07 | 2014-09-18 | Nagasaki Kogyo Kk | Adding material for retaining food freshness, paper material for packaging food, and cardboard box for food |
| CN104060499A (en) * | 2014-05-30 | 2014-09-24 | 苏州国昊壁纸有限公司 | Green environmental protection wallpaper with strong breathability |
| CN104074324A (en) * | 2014-05-30 | 2014-10-01 | 苏州国昊壁纸有限公司 | Environment-friendly wallpaper containing bamboo charcoal fiber |
| CN104074324B (en) * | 2014-05-30 | 2016-02-24 | 太仓市微贯机电有限公司 | A kind of environment-friendly type wallpaper containing bamboo-carbon fibre |
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