JP4216924B2 - Water-repellent paper coated with feather powder and method for producing the same - Google Patents

Description

但し、試験方法は下記の通りである。
１．坪量はＪＩＳ−Ｐ８１２４（紙のメートル坪量測定方法）に準拠。
２．紙厚はＪＩＳ−Ｐ８１１８（紙及び板紙の厚さと密度の試験方法）に準拠。
３．引張強度（ＤＲＹ）はＪＩＳ−Ｐ８１１３（紙及び板紙の引張強さ試験方法）に準拠。
４．引張強度（ＷＥＴ）はＪＩＳ−Ｐ８１３５（紙及び板紙の湿潤引張強さ試験方法）に準拠。
５．吸油速度は各試料に軽油（１号軽油）を注射針（Ｈ５号）を通して１滴（約４ｍｇ）滴下し、各試料が軽油の吸収を完了して、反射による光沢が無くなるまでの時間（秒）を測定。
６．平滑度はＪＩＳ−Ｐ８１１９（紙及び板紙のベック試験器による平滑度試験方法）に準拠。
７．撥水度はＪＩＳ−Ｐ８１３７（紙及び板紙の撥水度試験方法）に準拠。
図５のように、試料を４５度傾いた試料取付面に平らに固定し、温度２０±１℃の蒸留水を入れたビュレットの先端を試料から垂直方向に１０ｍｍ離し、水滴が試料の上を流下する長さを約３００ｍｍに調節する。ビュレットから水滴を１滴滴下し、流下の跡を観察して表２により撥水度を決定する。
【表２】

【００１５】
上記表１の結果から、実施例１、２の撥水紙は羽毛粉末を塗布することにより比較例１の基紙に優れた撥水性と耐水性を付与し、且つ印刷適性においても良好な結果を示すことが判明した。又、これらの撥水紙は、比較例２の撥水紙、比較例３の合成紙にはない生分解性を有することも判明した。
【００１６】
【発明の効果】
以上説明したように、本発明による撥水紙は、殆どが廃棄処分されている羽毛布団中の羽毛を微細粉末化し、塗布液中に適量配合して基紙の表面に塗布することで天然羽毛ケラチンの特性を活かし、優れた撥水性と耐水性を有すると共に、グラビア印刷、フレキソ印刷、オフセット印刷等の各種印刷適性を備えることができる。従って、情報用紙、ラベル、ポスター、カレンダー、宅配伝票、投票用紙、パッケージ、カード等広範な用途に有効に使用することができる。又、微生物による生分解が可能であり、焼却時に異常な温度上昇が生じず、焼却炉の損傷を未然に防止できる等の優れた効果を奏する。
更に、本発明に係る撥水紙は、既存の設備を用いて容易に低コストで製造することができ、羽毛粉末を活用するため廃材の有効利用と資源の省力化とを同時に図ることができ、上記の優れた特性と相俟って極めて高い実効性を発揮するものである。
【図面の簡単な説明】
【図１】本発明に係る撥水紙の実施形態を模式的に示す断面図。
【図２】本発明に係る撥水紙の他の実施形態を模式的に示す断面図。
【図３】本発明に係る撥水紙の製造工程を示す説明図。
【図４】本発明に係る撥水紙の他の製造工程を示す説明図。
【図５】撥水度試験方法を示す説明図。
【符号の説明】
１…基紙
２…塗膜層
３…羽毛粉末
４…無機顔料
１１…基紙
１２、１３…塗布ロール
１４…塗布液
１５…ドライヤー
１６…カレンダー
１７…撥水紙
２１…基紙
２２…バット
２３…含浸液
２４、２５…ドクターロール
２６…ドライヤー
２７…カレンダー
２８…撥水紙[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a water-repellent paper coated with feather powder and a method for producing the same.
[0002]
[Prior art]
Conventionally, water-repellent paper has been known, and its general production method is that a petroleum-based wax such as paraffin wax or microcrystalline wax, polyethylene wax or Fischer-Lopsch wax is formed on the surface of a base paper mainly composed of cellulose pulp. A coating layer is formed by applying and drying a coating wax such as a synthetic wax such as a synthetic wax such as montan wax or ceresin, or a silicone resin, an epoxy resin, a metal soap, or a silane. The water-repellent paper produced in this way is excellent in water repellency, but has a drawback that it cannot be printed on the surface because the coating layer does not accept ink.
In addition, a synthetic paper having water repellency is manufactured by adding additives to a synthetic resin and a filler and mixing them, and after melt-kneading with an extruder, it is extruded from a die slit to form a raw film. Although it is water-based and strong, it is not biodegradable and has disadvantages such as an abnormal temperature rise during incineration and damage to the incinerator.
[0003]
[Problems to be solved by the invention]
The present invention was made to eliminate the drawbacks of the prior art as described above, has excellent water repellency and ink acceptability, and various printing such as gravure printing, flexographic printing, and offset printing is possible. It is another object of the present invention to provide a water-repellent paper that is biodegradable, does not cause an abnormal temperature rise during incineration, and can prevent damage to the incinerator and a method for producing the same.
[0004]
[Means for Solving the Problems]
As a specific means for achieving this object, the present invention has a weight ratio of 3% to 15% by weight in a paint containing a resin, a pigment and a solvent on at least one side of a base paper made mainly of cellulose pulp. %, A urethane resin or a latex resin is used as the resin, and a coating solution using at least one of zeolite, silica, calcium carbonate, talc, kaolin, and titanium oxide as the pigment is applied to the one side to the surface. repellent paper feather powder was applied, characterized in that to form a coating layer by drying the applied in an amount of 1g / m ² ~50g / m ² and gist.
Also, a base paper made of cellulose pulp as a main component is fed out, and on one side, 3% to 15% by weight of feather powder is blended in a paint containing resin, pigment and solvent, and the resin is urethane resin or latex resin. the used zeolite as the pigment, silica, calcium carbonate, talc, kaolin, a step of applying an amount of 0.1g ^{/ m 2} ~50g ^/ m 2 the coating liquid obtained by using at least one of titanium oxide, then And a step of drying the water-repellent paper.
Furthermore, a base paper made of cellulose pulp as a main component is sent out, and 3 to 15% by weight of feather powder is blended in a paint containing resin, pigment and solvent, and urethane resin or latex resin is used as the resin, It is immersed in an impregnating solution using at least one of zeolite, silica, calcium carbonate, talc, kaolin, and titanium oxide as the pigment , impregnating the impregnating solution on both sides of the base paper, and then drying. The gist of the present invention is a method for producing water-repellent paper coated with feather powder.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 schematically shows a cross section of a water-repellent paper according to the present invention. Reference numeral 1 denotes a base paper as a base, which is mainly composed of cellulose pulp, and is a general long paper machine or circular paper machine. It is possible to make paper using an on-top paper machine, a twin-wire paper machine, etc., and dyes, pigments, sizing agents, fixing agents, dry paper strength enhancers, wet paper strength enhancers, etc. used in ordinary paper making Is contained as necessary.
[0006]
The base paper 1 is preferably high-quality paper, PPC paper, or kraft paper having excellent texture and smoothness. Further, as the cellulose pulp, not only ordinary wood pulp but also non-wood pulp such as linter, abaca, zaisal, bagasse and kenaf can be used. However, in applications that do not require biodegradability, polyethylene, polypropylene, polyvinyl alcohol, polyester, polyacrylnitrin synthetic fibers, rayon, cupra, acetate, etc., regenerated or semi-synthetic fibers, rock wool, glass fibers, carbon fibers Inorganic fibers such as can also be used.
[0007]
Reference numeral 2 denotes an application layer that is applied to both sides of the base paper 1 and dried, and contains feather powder 3. This coating layer 2 is composed of a coating liquid in which feather powder 3 is blended in an amount of 0.01% to 90% (weight ratio) in a paint mainly composed of a resin and a solvent. Apply in an amount of m ^{2 to} 50 g / m ² and dry. The resin of the paint emphasizes water resistance and printability, and for example, urethane resin and latex resin are desirable.
Further, as shown in FIG. 2, it is possible to improve whiteness and printability by including an appropriate amount of an inorganic pigment 4 such as zeolite, silica, calcium carbonate, talc, kaolin, titanium oxide in the coating layer 2. .
[0008]
The blending amount of the feather powder 3 is preferably about 3% to 15%. This is because if the blending amount of the feather powder 3 is small, the water-repellent function, biodegradation function and oil absorbing function cannot be obtained sufficiently, and if it is too much, uniform application cannot be achieved. If the coating amount is small, sufficient water-repellent function and water-resistant function cannot be obtained.
[0009]
This feather powder 3 is composed of olefin hydrocarbons such as ethylene, propylene and butylene, aromatic hydrocarbons such as benzene, toluene and xylene, saturated hydrocarbons such as decane, aliphatic organic substances such as methanol, ethanol and isopropyl alcohol. Immerse it in any one of chemicals, aromatic organic chemicals such as acetone, aniline, phenol, soda industrial chemicals such as sodium hypozinc acid, sodium chlorate and caustic soda, and inorganic chemicals such as hydrogen peroxide, and rotate the stone. It is characterized by being an adjusted powder that has been subjected to grinding and ball milling, has excellent water repellency and ink acceptability, and can be naturally biodegraded by microorganisms. About 70% of feathers are usually composed of keratin protein, and this keratin protein is the most intense fibrous protein among many proteins. It is hair, wool, animal hair, bird's feathers, skin epidermis. Etc. are formed. Moreover, the feather powder 3 has an amino acid composition with particularly high water repellency among the hard protein keratin as the main component, and further, it is easy to capture oil due to the internal hollow structure that is characteristic of feather fibers.
Therefore, due to the properties of the feather powder 3, the water-repellent paper of the present invention has a selective absorbency of repelling water and absorbing oil, and the water repellency inside the paper layer is prevented by excellent water repellency. In addition, strength deterioration due to water hardly occurs, and various types of printing such as gravure printing, flexographic printing, and offset printing using oil-based inks are possible.
[0010]
The coating process of the coating layer 2 can be performed with a known coating facility such as a bar coater, an air knife coater, a blade coater, a bill blade coater, a gravure coater, a gate roll coater, a reverse coater, or a cast coater. For the drying process after coating, known equipment such as a general drum dryer, tunnel dryer or air-through dryer can be used.
[0011]
Furthermore, in order to improve the smoothness after drying, known equipment such as a machine calendar and a super calendar can be applied. In this case, it is preferable to finish the Beck smoothness to be 30 seconds or more in order to improve printability.
[0012]
FIG. 3 shows a method for producing a water-repellent paper according to the present invention, in which a base paper 11 wound in a roll shape is fed out, and feather powder is blended on one side as described above via coating rolls 12 and 13. An appropriate amount of the coating solution 14 is applied, dried with a dryer 15, smoothed with a calendar 16, and wound with a reel to produce a water-repellent paper 17.
In this case, the single-side treatment is performed, but the non-treated surface of the water-repellent paper 17 is processed in the same manner, that is, the water-repellent paper subjected to the double-side treatment by two treatment steps can be manufactured. Whether single-sided processing or double-sided processing is determined according to the use of the water-repellent paper.
[0013]
FIG. 4 shows another method for producing the water-repellent paper according to the present invention. The base paper 21 wound in a roll shape is sent out, and the impregnating liquid 23 (resin and solvent mainly contained) contained in the bat 22 is shown. Immerse the paint in feather powder in 0.01% to 50%) and impregnate both sides of the base paper 21 with the impregnating liquid 23. The doctor rolls 24 and 25 scrape off the excess impregnating liquid and send it to the dryer 26. After drying, the surface treatment is performed on the calendar 27, and the paper is wound with a reel to produce a water-repellent paper 28. In this case, double-sided processing can be performed in one step.
[0014]
Table 1 shows the results of actually producing the water-repellent paper according to the present invention (Example 1 and Example 2) and comparing the performance with the conventional products (Comparative Example 1, Comparative Example 2 and Comparative Example 3). .
[Example 1]
Commercially available high-quality paper 65 g / m ² , 5% feather powder in a paint diluted with a solvent mainly composed of isopropyl alcohol and toluene as a urethane resin, and a coating solution stirred with a stirrer on one side is 10 g / m ² (Solid content) was applied with a knife coater and dried at a drying temperature of 100 ° C. using a tunnel dryer. Thereafter, using a calender made of upper and lower metals, a water repellent paper was produced by subjecting the surface to a surface smoothing treatment at a linear pressure of 80 kgf / cm ² and a line speed of 5 m / min.
[Example 2]
On both sides of commercially available high-quality paper 65g / m ² , 10% feather powder is blended in a paint diluted with a solvent mainly composed of isopropyl alcohol and toluene, and 10% calcium carbonate is blended as an inorganic pigment. The stirred impregnating solution was impregnated with a roll coater in an amount of 15 g / m ² (solid content), and dried using a tunnel dryer at a drying temperature of 100 ° C. to produce water-repellent paper.
[Comparative Example 1]
Commercially available high-quality paper 65 g / m ² .
[Comparative Example 2]
A water-repellent agent of paraffin wax emulsion is applied on both sides of a commercially available high-quality paper 65 g / m ² with a bar coater in an amount of 10 g / m ² (solid content), and the drying temperature is 100 ° C. using a rotary dryer. A water-repellent paper was produced by drying.
[Comparative Example 3]
85 g / m ² of synthetic paper manufactured by Company A manufactured by a method in which an additive is added to and mixed with a synthetic resin and a filler, melted and kneaded by an extruder, and then extruded from a die slit to form a biofilm.
[Table 1]

However, the test method is as follows.
1. Basis weight conforms to JIS-P8124 (Measuring basis weight of paper).
2. The paper thickness conforms to JIS-P8118 (Test method for paper and board thickness and density).
3. Tensile strength (DRY) conforms to JIS-P8113 (Testing method for tensile strength of paper and paperboard).
4). Tensile strength (WET) conforms to JIS-P8135 (wet tensile strength test method for paper and board).
5. The oil absorption rate is the time (seconds) until light oil (No. 1 light oil) is dropped into each sample through the injection needle (H5) and 1 sample (about 4 mg) is dripped, and each sample completes absorption of light oil and the gloss due to reflection disappears. ) Measure.
6). Smoothness conforms to JIS-P8119 (Smoothness test method using Beck tester for paper and paperboard).
7). The water repellency conforms to JIS-P8137 (Test method for water repellency of paper and paperboard).
As shown in FIG. 5, the sample is flatly fixed on the sample mounting surface inclined at 45 degrees, the tip of the burette containing distilled water at a temperature of 20 ± 1 ° C. is separated from the sample by 10 mm in the vertical direction, and water droplets move over the sample. Adjust the length to flow down to about 300 mm. One drop of water is dropped from the burette, the trace of flow is observed, and the water repellency is determined according to Table 2.
[Table 2]

[0015]
From the results of Table 1 above, the water-repellent papers of Examples 1 and 2 imparted excellent water repellency and water resistance to the base paper of Comparative Example 1 by applying feather powder, and also good printability. It turned out to show. These water-repellent papers were also found to have biodegradability not found in the water-repellent paper of Comparative Example 2 and the synthetic paper of Comparative Example 3.
[0016]
【The invention's effect】
As described above, the water-repellent paper according to the present invention is a natural feather obtained by finely pulverizing the feathers in the duvet, which is mostly disposed of, and blending an appropriate amount in the coating liquid and applying it to the surface of the base paper. Taking advantage of the characteristics of keratin, it has excellent water repellency and water resistance, and can have various printing aptitudes such as gravure printing, flexographic printing, and offset printing. Therefore, it can be effectively used for a wide range of applications such as information sheets, labels, posters, calendars, home delivery slips, voting sheets, packages, and cards. In addition, biodegradation by microorganisms is possible, and there is an excellent effect that an abnormal temperature rise does not occur during incineration and damage to the incinerator can be prevented in advance.
Furthermore, the water-repellent paper according to the present invention can be easily manufactured at low cost by using existing equipment, and since the use of feather powder, effective utilization of waste materials and resource saving can be achieved at the same time. Combined with the above-mentioned excellent characteristics, it exhibits extremely high effectiveness.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view schematically showing an embodiment of a water-repellent paper according to the present invention.
FIG. 2 is a cross-sectional view schematically showing another embodiment of the water-repellent paper according to the present invention.
FIG. 3 is an explanatory view showing a process for producing water-repellent paper according to the present invention.
FIG. 4 is an explanatory view showing another manufacturing process of the water repellent paper according to the present invention.
FIG. 5 is an explanatory diagram showing a water repellency test method.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Base paper 2 ... Coating layer 3 ... Feather powder 4 ... Inorganic pigment 11 ... Base paper 12, 13 ... Coating roll 14 ... Coating liquid 15 ... Dryer 16 ... Calendar 17 ... Water-repellent paper 21 ... Base paper 22 ... Bat 23 ... Impregnating liquids 24, 25 ... Doctor roll 26 ... Dryer 27 ... Calendar 28 ... Water-repellent paper

Claims (3)

At least one side of a base paper made of cellulose pulp as a main component is blended with 3 to 15% by weight of feather powder in a paint containing resin, pigment and solvent, and urethane resin or latex resin is used as the resin, zeolite as the pigment, silica, calcium carbonate, talc, kaolin, a coating solution obtained by using at least one of titanium oxide, was applied in an amount of 0.1g ^{/ m 2} ~50g ^/ m 2 per the one surface dried A water-repellent paper coated with feather powder, characterized in that a coating layer is formed by applying the coating. A base paper made of cellulose pulp as a main component is sent out, and on one side, 3% to 15% by weight of feather powder is blended in a paint containing resin, pigment and solvent, and urethane resin or latex resin is used as the resin. , zeolite as the pigment, silica, calcium carbonate, talc, kaolin, a step of applying an amount of 0.1g ^{/ m 2} ~50g ^/ m 2 the coating liquid obtained by using at least one of titanium oxide, followed by drying A process for producing water-repellent paper coated with feather powder. A base paper made of cellulose pulp as a main component is fed out, and 3 to 15% by weight of feather powder is blended in a paint containing resin, pigment and solvent, and urethane resin or latex resin is used as the resin, and the pigment It is characterized by being immersed in an impregnation liquid using at least one of zeolite, silica, calcium carbonate, talc, kaolin, and titanium oxide , impregnating the impregnation liquid on both surfaces of the base paper, and then drying. A method for producing water-repellent paper coated with feather powder.

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