JP7437833B1 - Color filter paper for laboratory testing and its manufacturing method - Google Patents
Color filter paper for laboratory testing and its manufacturing method Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 82
- 239000000463 material Substances 0.000 claims abstract description 76
- 239000006229 carbon black Substances 0.000 claims abstract description 33
- 239000000049 pigment Substances 0.000 claims abstract description 32
- 229920005989 resin Polymers 0.000 claims abstract description 14
- 239000011347 resin Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 19
- 238000004040 coloring Methods 0.000 claims description 9
- 238000009533 lab test Methods 0.000 claims 1
- 229920001225 polyester resin Polymers 0.000 claims 1
- 239000004645 polyester resin Substances 0.000 claims 1
- 238000001914 filtration Methods 0.000 abstract description 17
- 230000000007 visual effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 abstract 1
- 229920000728 polyester Polymers 0.000 description 18
- 239000000835 fiber Substances 0.000 description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 15
- 238000007639 printing Methods 0.000 description 10
- 239000000975 dye Substances 0.000 description 8
- 239000011148 porous material Substances 0.000 description 7
- 238000007645 offset printing Methods 0.000 description 5
- 239000012466 permeate Substances 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000003086 colorant Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000006059 cover glass Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Abstract
【課題】一般的に流通する白色又は生成り色等の汎用濾紙を濾紙基材として、濾過機能を残存させながら、検査対象の視認に適した黒色に着色された検体検査用のカラー濾紙及びその製造方法を提供する。【解決手段】検体検査用のカラー濾紙であって、樹脂基材、カーボンブラック及び顔料の合計を100としたときに、樹脂基材79～90、カーボンブラック9.9～20、かつ染料由来の顔料0.1～1以下の比率とした条件を満たし、濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とした塗料を用いて前記濾紙基材が着色され、前記塗料により着色される前記濾紙基材は、厚み100μmとしたときに、18～90ｇ/m2の重さ（塗料重さ含まず）を有するものとされている。【選択図】図１[Problem] A color filter paper for specimen testing that uses commonly available general-purpose filter paper such as white or ecru-colored filter paper as a filter paper base material and is colored black suitable for visual recognition of the test object while retaining its filtration function. A manufacturing method is provided. [Solution] A color filter paper for specimen testing, in which the resin base material is 79 to 90, carbon black is 9.9 to 20, and pigment derived from dye is 0.1, when the total of resin base material, carbon black, and pigment is 100. The filter paper base material is colored using a paint that satisfies the conditions of a ratio of ~1 or less and the weight of the paint applied per 100 cm2 of the filter paper base material is within 0.4 g, and the filter paper that is colored by the paint The base material is said to have a weight of 18 to 90 g/m2 (not including the weight of the paint) when the thickness is 100 μm. [Selection diagram] Figure 1
Description
本発明は、検体検査用のカラー濾紙及びその製造方法に関する。 The present invention relates to a color filter paper for specimen testing and a method for manufacturing the same.
白色に近い薄い色からなる媒体を検査対象とする検体検査用の濾紙は、濾紙自体が黒色（暗色）であれば、濾過されて濾紙上に残存した検査対象物を視認しやすい。このため、黒色の濾紙を製造する際には、紙漉きの段階で紙原料に何らかの染色をする必要がある。 When using a filter paper for testing a medium that has a light color close to white, if the filter paper itself is black (dark color), it is easy to visually recognize the test object that remains on the filter paper after being filtered. Therefore, when producing black filter paper, it is necessary to dye the paper raw material in some way during the papermaking stage.
しかしながら、染色のために紙の製造段階から工程を変更するには専用の製造ラインを新たに設けなければならず、管理面やコスト面から見ても当該工程の変更は容易ではない。 However, changing the process from the paper manufacturing stage for dyeing requires setting up a new dedicated production line, and changing the process is not easy from a management and cost standpoint.
また、一般的に流通する濾紙に対して着色することにより黒色の濾紙を製造する場合は、顔料系の樹脂を着色料として使用すると、着色後の濾紙表面に被膜ができてしまい濾過機能を失う。染料系の着色料を使った場合は、濾紙の性質から、着色料は濾紙の表面に止まらず染み込んで滲んだ印刷となるため、その表面においては発色が損なわれて適切な黒色に着色できない。 In addition, when manufacturing black filter paper by coloring commonly available filter paper, if a pigment-based resin is used as a coloring agent, a film will be formed on the surface of the filter paper after coloring and the filtering function will be lost. . When dye-based colorants are used, due to the nature of the filter paper, the colorant does not remain on the surface of the filter paper and soaks into it, resulting in a smeared print, which impairs the color development on the surface and prevents it from being colored appropriately black.
本発明は係る事情に鑑みてなされたものであり、一般的に流通する白色又は生成り色等の汎用濾紙を濾紙基材として、濾過機能を残存させながら、検査対象の視認に適した黒色に着色された検体検査用のカラー濾紙及びその製造方法を提供することを目的とする。 The present invention has been made in view of the above circumstances, and uses commonly available general-purpose filter paper such as white or ecru-colored filter paper as a filter paper base material, and while retaining its filtration function, it has a black color suitable for visual recognition of the inspection target. An object of the present invention is to provide colored filter paper for sample testing and a method for manufacturing the same.
本発明の一局面に係るカラー濾紙は、検体検査用のカラー濾紙であって、樹脂基材、カーボンブラック及び顔料の合計を100としたときに、樹脂基材79～90、カーボンブラック9.9～20、かつ染料由来の顔料0.1～1以下の比率とした条件を満たし、濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とした塗料を用いて前記濾紙基材が着色され、前記塗料により着色される前記濾紙基材として、厚み100μmとしたときに、18～90ｇ/m2の重さを有するものが用いられる。 A color filter paper according to one aspect of the present invention is a color filter paper for specimen testing, in which the resin base material has a content of 79 to 90% and the carbon black has a content of 9.9 to 20%, when the total of the resin base material, carbon black, and pigment is 100. , and the filter paper base material is colored using a paint that satisfies the conditions that the ratio of dye-derived pigment is 0.1 to 1 or less, and the weight of the paint applied per 100 cm 2 of the filter paper base material is within 0.4 g, The filter paper base material to be colored with the paint has a weight of 18 to 90 g/m 2 when the thickness is 100 μm.
本発明の一局面に係るカラー濾紙の製造方法は、検体検査用のカラー濾紙の製造方法であって、樹脂基材、カーボンブラック、及び顔料の合計を100としたときに、樹脂基材79～90、カーボンブラック9.9～20かつ染料由来の顔料0.1～１以下の比率とした条件を満たし、濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とした塗料を用いて前記濾紙基材を着色し、更に、前記塗料により着色される前記濾紙基材として、厚み100μmとしたときに、18～90ｇ/m2の重さのものを用いる。 A method for manufacturing a color filter paper according to one aspect of the present invention is a method for manufacturing a color filter paper for laboratory testing, in which the resin base material is 79 to 79% when the total of the resin base material, carbon black, and pigment is 100 90, carbon black 9.9 to 20 and dye-derived pigment 0.1 to 1 or less. The filter paper base material to be colored and further colored with the paint has a weight of 18 to 90 g/m 2 when the thickness is 100 μm.
本発明によれば、一般的に流通する白色又は生成り色等の汎用濾紙を濾紙基材として簡単な工程で製造でき、濾過機能を残存させながら黒色に着色されていることで、検査対象物の視認姓に優れる。 According to the present invention, it is possible to manufacture the generally distributed general-purpose filter paper, such as white or ecru-colored, in a simple process as a filter paper base material, and the filter paper is colored black while retaining its filtration function. Excellent visual surname.
以下、本発明に係るカラー濾紙及びその製造方法を説明する。本発明の一実施形態に係るカラー濾紙（以下、単にカラー濾紙という）は、濾紙基材を、樹脂基材、カーボンブラック、及び顔料からなる塗料を用いて着色したものである。樹脂基材は、本実施形態では、ポリエステルを用いる。すなわち、本実施形態に係るカラー濾紙の製造に用いる塗料は、ポリエステル、カーボンブラック、及び顔料からなる塗料である。 Hereinafter, a color filter paper and a method for manufacturing the same according to the present invention will be explained. A color filter paper (hereinafter simply referred to as a color filter paper) according to an embodiment of the present invention is obtained by coloring a filter paper base material using a paint consisting of a resin base material, carbon black, and a pigment. In this embodiment, polyester is used as the resin base material. That is, the paint used to manufacture the color filter paper according to this embodiment is a paint made of polyester, carbon black, and pigment.
本実施形態に係るカラー濾紙は、一般的に流通する白色又は生成り色等の汎用濾紙を濾紙基材として、当該濾紙基材を上記塗料で着色したものである。濾紙基材の一例として、タカラバイオ社のブロッティング用濾紙が用いられる。また、上記塗料を構成する、ポリエステル、カーボンブラック、及び顔料は、これらの重量比合計を100としたときに、ポリエステル79～90、カーボンブラック9.9～20、顔料0.1～1の比率条件を満たすものとされる。 The color filter paper according to the present embodiment uses a generally distributed general-purpose filter paper such as white or ecru color as a filter paper base material, and the filter paper base material is colored with the above-mentioned paint. As an example of the filter paper base material, Takara Bio Inc.'s blotting filter paper is used. In addition, the polyester, carbon black, and pigment that make up the above paint satisfy the ratio conditions of polyester 79 to 90, carbon black 9.9 to 20, and pigment 0.1 to 1, when the total weight ratio of these is 100. It is said that
ここで、顔料は、例えば、染料（例えば、フタロシアニン）由来の顔料が用いられる。カーボンブラックは、濾紙基材を黒色に着色するために用いる。但し、カーボンブラックは、濾紙基材に対しては染み込み難く、また定着もし難い。このため、カーボンブラックを顔料と共に、ポリエステルに上記比率で混ぜ合わせた塗料を、濾紙基材に対して塗布することで、濾紙基材に対して上記塗料を定着させやすくする。但し、100cm2の面積からなる濾紙基材あたりに塗布する上記塗料の重さを0.4g以内とする。ここで、塗料重さとは、ポリエステル、カーボンブラック及び上記顔料の重量合計である。すなわち、ここでは、カラー濾紙の単位面積あたりに使用する上記塗料の重さ条件を示している。このように、濾紙基材の単位面積あたりに使用する上記塗料の重さ条件を求めるのは、濾紙基材に対する上記塗料の使用量が多過ぎると、濾紙基材を構成するパルプ繊維の繊維間を上記塗料が埋めてしまい、塗料塗布後のカラー濾紙による濾過機能が低下するためである。 Here, as the pigment, for example, a pigment derived from a dye (for example, phthalocyanine) is used. Carbon black is used to color the filter paper base black. However, carbon black is difficult to penetrate into the filter paper base material and is also difficult to fix. Therefore, by applying a coating material in which carbon black and pigment are mixed with polyester in the above ratio to the filter paper substrate, the coating material can be easily fixed to the filter paper substrate. However, the weight of the above paint applied per filter paper base material having an area of 100 cm 2 shall be within 0.4 g. Here, the paint weight is the total weight of polyester, carbon black, and the above pigment. That is, the weight conditions of the paint used per unit area of color filter paper are shown here. In this way, the reason for determining the weight condition of the paint used per unit area of the filter paper base material is that if the amount of the paint used is too large for the filter paper base material, the fibers of the pulp fibers that make up the filter paper base material This is because the above-mentioned paint fills up the filter, reducing the filtration function of the color filter paper after the paint is applied.
また、上記カラー濾紙は、カーボンブラックにより着色しているため、カーボンブラックの使用量が多くなり過ぎると、カーボンブラックが水分を撥水してしまい濾過機能が低減する。このため、上記条件を用いて、カーボンブラックの使用量を一定範囲に抑える。 Further, since the color filter paper is colored with carbon black, if the amount of carbon black used is too large, the carbon black will repel water and the filtering function will be reduced. Therefore, using the above conditions, the amount of carbon black used is kept within a certain range.
また、上記塗料として、染料由来の顔料を含めるのは、濾紙基材を構成するパルプ繊維に対して上記塗料を染み込みやすくするためである。上述のように、ポリエステルの配合により、濾紙基材を構成するパルプ繊維の表面に対する上記塗料の定着は確保できるが、ポリエステル及びカーボンブラックのみで構成される塗料の場合、パルプ繊維の表面に止まるおそれがあるため、塗料に含める顔料を染料由来とすることにより、塗料をパルプ繊維の内部に侵入しやすくする。このように上記塗料をパルプ繊維の内部に侵入しやすくすることで、パルプ繊維の表面に止まる塗料の量が多くなり過ぎて濾紙基材を構成するパルプ繊維の繊維間を塗料が埋めてしまう事態、すなわち、濾紙基材の表面に塗料が被膜を形成してしまい濾過機能が損なわれる事態を極力回避する。 Furthermore, the reason why the pigment derived from a dye is included in the paint is to make it easier for the paint to penetrate into the pulp fibers constituting the filter paper base material. As mentioned above, by blending polyester, it is possible to ensure that the above paint adheres to the surface of the pulp fibers that make up the filter paper base material, but if the paint is made only of polyester and carbon black, there is a risk that the paint will stay on the surface of the pulp fibers. Therefore, by using dye-based pigments in the paint, it is easier for the paint to penetrate inside the pulp fibers. By making it easier for the paint to penetrate inside the pulp fibers, the amount of paint that stays on the surface of the pulp fibers becomes too large, causing the paint to fill in between the fibers of the pulp fibers that make up the filter paper base material. That is, the situation where the paint forms a film on the surface of the filter paper base material and the filtering function is impaired is avoided as much as possible.
更に、上記カラー濾紙には、上記塗料を塗布する濾紙基材として、厚み100μmの場合に18～90ｇ/m2の重さのものを用いる。これは、濾紙基材が有する濾過性能と、上記塗料の使用量との関係を定義する条件であり、すなわち、厚み100μmの濾紙基材100cm2あたりに使用する塗料の量を0.4gと定義することにより、黒色に着色することによる濾過時の検査対象物の視認性確保と、濾過性能の両方を確保する。 Further, for the color filter paper, a filter paper base material to which the paint is applied has a weight of 18 to 90 g/m 2 when the thickness is 100 μm. This is a condition that defines the relationship between the filtration performance of the filter paper base material and the amount of paint used. In other words, the amount of paint used per 100 cm 2 of filter paper base material with a thickness of 100 μm is defined as 0.4 g. This ensures both the visibility of the object to be inspected during filtration by coloring it black and the filtration performance.
次に、濾過基材を上記塗料で着色する工程を説明する。濾紙基材に対する顔料の塗布は、オフセット印刷機による印刷が用いられる。まず、濾紙基材を記録媒体とし、上記塗料を転写及び定着させる。 Next, the process of coloring the filter base material with the above paint will be explained. Printing using an offset printing machine is used to apply the pigment to the filter paper base material. First, the paint is transferred and fixed using a filter paper base material as a recording medium.
次に、上記印刷により製造されたカラー濾紙の使用形態を説明する。上記カラー濾紙は、例えば、別途新開発の試薬によって一般細菌と大腸菌を蛍光染色させ、蛍光顕微鏡を用いて測点エリアの蛍光点を自動カウントする機器に使用される。この場合、濾過時の検査対象物の視認性確保には、濾紙が黒色であることが最適である。 Next, the usage pattern of the color filter paper manufactured by the above printing will be explained. The above-mentioned color filter paper is used, for example, in a device that fluorescently stains general bacteria and Escherichia coli with a newly developed reagent and automatically counts fluorescent points in a measurement point area using a fluorescence microscope. In this case, it is optimal for the filter paper to be black in order to ensure visibility of the object to be inspected during filtration.
本実施形態に示したカラー濾紙は、濾紙基材に、一般的に使用されているブロッティング用濾紙を用い、当該濾紙に、上記ポリエステル、カーボンブラック、及び顔料を上記条件で配合した塗料を塗布することで製造するため、既に黒色に着色された繊維により製造された濾紙と比較して、製造工程が簡単になり、容易に製造することができる。その上、濾紙基材が有する濾過機能を残存させながら黒色に色でき、濾過時の検査対象物の視認性を確保することができる。繊維自体を黒色に着色して黒色の濾紙を製造するためには、染色のために紙の製造段階から工程を変更して専用の製造ラインを新たに設けなければならず、管理面やコスト面からみて当該工程の変更は容易ではないが、上記実施形態に係るカラー濾紙の場合、製造工程が簡単であり、繊維自体を黒色に着色して黒色の濾紙を製造する場合よりも容易に製造することができる。 The color filter paper shown in this embodiment uses commonly used filter paper for blotting as a filter paper base material, and a paint containing the above polyester, carbon black, and pigment mixed under the above conditions is applied to the filter paper. Therefore, the manufacturing process is simplified and the filter paper can be manufactured easily compared to filter paper manufactured from fibers that are already colored black. Moreover, it can be colored black while retaining the filtering function of the filter paper base material, and the visibility of the object to be inspected during filtration can be ensured. In order to manufacture black filter paper by coloring the fibers themselves black, it is necessary to change the process from the paper manufacturing stage and set up a new dedicated production line for dyeing, which causes problems in terms of management and cost. Therefore, it is not easy to change the process, but in the case of the colored filter paper according to the above embodiment, the manufacturing process is simple, and it is easier to manufacture than when manufacturing black filter paper by coloring the fibers themselves black. be able to.
ここで、濾紙基材に対する上述の塗料塗布について説明する。図１は、濾紙基材に塗料を塗布する工程を示すフローチャートである。 Here, the above-mentioned coating application to the filter paper base material will be explained. FIG. 1 is a flowchart showing the process of applying paint to a filter paper base material.
まず、濾紙基材として、印刷に用いるオフセット印刷機に、一般的に流通する白色又は生成り色等の汎用濾紙（例えば、タカラバイオ社のブロッティング用濾紙）であって、厚み100μmの場合に18～90ｇ/m2の重さのものを、塗料が塗布される記録媒体としてセットする（Ｓ１）。 First, as a filter paper base material, use general-purpose filter paper such as white or ecru color that is commonly distributed in offset printing machines used for printing (for example, Takara Bio's blotting filter paper), and if it is 100 μm thick, 18 An object weighing ~90 g/m 2 is set as a recording medium to be coated with paint (S1).
更に、ポリエステル、カーボンブラック、及び顔料を、これらの重量比合計を100としたときに、ポリエステル79～90、カーボンブラック9.9～20、顔料0.1～1の比率条件を満たすように配合して塗料を生成する（Ｓ２）。 Furthermore, when the total weight ratio of polyester, carbon black, and pigment is 100, the paint is made by blending the polyester to 79 to 90, carbon black to 9.9 to 20, and pigment to satisfy the ratio conditions of 0.1 to 1. Generate (S2).
続いて、生成した塗料を、記録媒体への印刷用塗料として、オフセット印刷機に供給する（Ｓ３）。このオフセット印刷機では、例えば版胴に上記塗料を供給し、版胴から塗料をブランケット胴に転写して、さらに上記記録媒体としての濾紙基材に塗料を転写させるが、濾紙基材に転写される塗料の量を、濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とする条件を満たすように設定する（Ｓ４）。 Subsequently, the produced paint is supplied to an offset printing machine as a paint for printing on a recording medium (S3). In this offset printing machine, for example, the paint is supplied to the plate cylinder, transferred from the plate cylinder to the blanket cylinder, and then transferred to the filter paper base material as the recording medium, but the paint is not transferred to the filter paper base material. The amount of paint to be applied is set so as to satisfy the condition that the weight of paint to be applied per 100 cm 2 of area of the filter paper base material is within 0.4 g (S4).
このとき、このように塗料を記録媒体に転写させる前に、ブランケット胴に対向する位置に設けられてブランケット胴との間に記録媒体をニップする圧胴による圧が加えられる。ここで、この際に加える圧としては、例えば、新聞紙印刷等の通常印刷の場合の圧を用いる。但し、当該通常印刷の圧よりも、予め定められた割合だけ小さくした圧、例えば、通常印刷時の圧を、予め定められた圧として10％～40％低減した圧を用いることが好ましい。ここでは、圧胴による圧を通常印刷時の圧よりも予め定められた割合だけ低減された圧に設定する（Ｓ５）。 At this time, before the paint is transferred to the recording medium in this manner, pressure is applied by an impression cylinder that is provided at a position facing the blanket cylinder and nip the recording medium between it and the blanket cylinder. Here, as the pressure applied at this time, for example, the pressure used in normal printing such as newspaper printing is used. However, it is preferable to use a pressure that is lower than the normal printing pressure by a predetermined percentage, for example, a pressure that is 10% to 40% lower than the normal printing pressure as the predetermined pressure. Here, the pressure applied by the impression cylinder is set to a pressure that is lower than the pressure during normal printing by a predetermined percentage (S5).
上記のように、圧胴による圧を設定した後、版胴に上記塗料を供給し、版胴から塗料をブランケット胴に転写して、さらに上記記録媒体に塗料を転写させる（Ｓ６）。 After setting the pressure by the impression cylinder as described above, the paint is supplied to the plate cylinder, the paint is transferred from the plate cylinder to the blanket cylinder, and the paint is further transferred to the recording medium (S6).
このようなオフセット印刷機を用いた印刷により、上記濾紙基材に対する上記配合からなる塗料の塗布を完了させる。 By printing using such an offset printing machine, the application of the paint having the above formulation onto the filter paper base material is completed.
次に、濾紙基材と上記塗料の関係について説明する。図２は、濾紙基材の表面を拡大して示した図（平面図）である。図３は、図２に示した濾紙基材の断面図である。 Next, the relationship between the filter paper base material and the above-mentioned paint will be explained. FIG. 2 is an enlarged view (plan view) of the surface of the filter paper base material. FIG. 3 is a cross-sectional view of the filter paper base material shown in FIG. 2.
図２に示すように、濾紙基材には、その表面を上方から視認すると、表面は平滑ではなく凹凸があり、凸分の隙間には、濾過機能に貢献する、孔の空いた部分が多く存在する。このように、濾紙基材は、多孔性で且つ平面性に乏しい。このため、濾紙基材の表面に対してその上面から塗料を塗布したとき、単位面積当たりで塗布する塗料が適量よりも少ない場合には、上記圧により塗料を濾紙基材の表面に均一に押しなべても、上記孔の全てに塗料が入り込まず、当該入り込まない孔部分は、着色されない領域となる。また、単位面積当たりで塗布する塗料が適量よりも多い場合には、上記孔の多くに塗料が入り込むため、その場合には、上記孔の多くが塗料により埋められ、濾過機能を低減させるおそれがある。 As shown in Figure 2, when the surface of the filter paper base material is visually observed from above, the surface is not smooth but uneven, and there are many pores in the gaps between the protrusions that contribute to the filtration function. exist. Thus, the filter paper base material is porous and has poor planarity. Therefore, when applying paint from above to the surface of the filter paper base material, if the amount of paint applied per unit area is less than the appropriate amount, the above pressure will force the paint evenly onto the surface of the filter paper base material. However, the paint does not enter all of the holes, and the portions of the holes where the paint does not enter become areas that are not colored. In addition, if more paint is applied per unit area than the appropriate amount, the paint will enter many of the pores, and in that case, many of the pores will be filled with paint, which may reduce the filtration function. be.
ここで、本実施形態では、上述した適切な配合からなる塗料を単位面積当たり適量で濾紙基材の表面に塗布することにより、上記圧により塗料を濾紙基材の表面に均一に押しなべたときに、塗料が入り込まない上記孔部分を、所望の濾過機能が維持される適度な数で残すようにする。このとき、当該孔部分には塗料が存在しないことになるが、上述したように、上記塗料は、ポリエステルの配合により、濾紙基材を構成するパルプ繊維の表面に対する上記塗料の定着を確保しつつ、染料由来の顔料を含めることで塗料をパルプ繊維の内部に侵入させるため、パルプ繊維の表面に対する着色効果を確保することができる。 Here, in this embodiment, by applying the paint composed of the above-mentioned appropriate formulation to the surface of the filter paper base material in an appropriate amount per unit area, when the paint is uniformly pressed onto the surface of the filter paper base material by the above pressure. Second, a suitable number of pores that do not allow the paint to enter are left so as to maintain the desired filtration function. At this time, no paint is present in the pores, but as mentioned above, the paint is blended with polyester to ensure the fixation of the paint to the surface of the pulp fibers that make up the filter paper base material. By including pigments derived from dyes, the paint penetrates into the inside of the pulp fibers, so it is possible to ensure a coloring effect on the surface of the pulp fibers.
従って、塗料を塗布した濾紙基材の表面、すなわち、カラー濾紙の表面は、図２に示す方向から見た上面視で黒色に着色されていながらも、図３に示す方向からみた断面視では、上記孔部分に塗料が完全に入り込んでおらず、濾過機能を保持する孔としての機能を損なわない。 Therefore, although the surface of the filter paper base material coated with the paint, that is, the surface of the colored filter paper, is colored black when viewed from above in the direction shown in FIG. 2, when viewed in cross section from the direction shown in FIG. The paint does not completely enter the pores and does not impair their function as pores that retain their filtration function.
また、濾紙基材に塗布する塗料は、上述した、ポリエステル、カーボンブラック、及び顔料は、これらの重量比合計を100としたときに、ポリエステル79～90、カーボンブラック9.9～20、顔料0.1～1の比率条件の範囲内で、カーボンブラックの配合値を極力小さくすることで、検体検査時に検査対象を写真撮影する際における撮影表面の反射をより低減することが可能である。このため、本実施形態に係るカラー濾紙によれば、アンチグレアカバーガラス等を使用せずとも直接検査対象の表面を容易に撮影することができる。 In addition, the paint applied to the filter paper base material is the above-mentioned polyester, carbon black, and pigment, when the total weight ratio of these is 100, polyester is 79 to 90, carbon black is 9.9 to 20, and pigment is 0.1 to 1. By making the blending value of carbon black as small as possible within the range of the ratio conditions, it is possible to further reduce reflection on the photographing surface when photographing the test object during specimen testing. Therefore, according to the color filter paper according to this embodiment, the surface of the inspection target can be directly photographed easily without using an anti-glare cover glass or the like.
なお、本発明は上記実施の形態の構成に限られず種々の変形が可能である。また、図１乃至図３を用いて上記実施形態により示した構成及び処理は、本発明の一実施形態に過ぎず、本発明を当該構成及び処理に限定する趣旨ではない。 Note that the present invention is not limited to the configuration of the above embodiments, and various modifications are possible. Further, the configuration and processing shown in the above embodiment using FIGS. 1 to 3 are only one embodiment of the present invention, and the present invention is not intended to be limited to the configuration and processing.
次に、上述した比率条件からなる塗料を用いて本実施形態に係る製造方法により製造したカラー濾紙と、上述した比率条件を満たさず本実施形態に係る製造方法によらずに製造したカラー濾紙とに、純水を浸透させる場合の比較を説明する。 Next, a color filter paper manufactured by the manufacturing method according to this embodiment using a paint having the above-mentioned ratio conditions, and a color filter paper manufactured without satisfying the above-mentioned ratio conditions and not according to the manufacturing method according to this embodiment. Next, we will explain the comparison when infiltrating pure water.
本実施形態に係る製造方法により製造したカラー濾紙ＣＲ１には、塗料として、ポリエステル、カーボンブラック、及び顔料を、これらの重量比合計を100としたときに、ポリエステル84、カーボンブラック15、顔料1の比率条件として生成した塗料を用いている。そして、濾紙基材には、厚み100μmとしたときに18～90ｇ/m2の重さを有するものを用いている。 Color filter paper CR1 manufactured by the manufacturing method according to the present embodiment contains polyester, carbon black, and pigment as paints, and when the total weight ratio of these is 100, polyester 84, carbon black 15, and pigment 1. The generated paint is used as a ratio condition. The filter paper base material used has a weight of 18 to 90 g/m 2 when the thickness is 100 μm.
一方、本実施形態に係る製造方法によらずに製造したカラー濾紙ＣＲ２は、塗料として、ポリエステル、カーボンブラック、及び顔料を、これらの重量比合計を100としたときに、ポリエステル69、カーボンブラック30、顔料1の比率条件として生成した塗料を用いている。そして、濾紙基材には、厚み100μmとしたときに18～90ｇ/m2の重さを有するものを用いている。 On the other hand, the color filter paper CR2 manufactured without using the manufacturing method according to the present embodiment contains polyester, carbon black, and pigment as paints, and when the total weight ratio of these is 100, polyester is 69 and carbon black is 30. , using the paint produced as the pigment 1 ratio condition. The filter paper base material used has a weight of 18 to 90 g/m 2 when the thickness is 100 μm.
図４～図７に、カラー濾紙ＣＲ１及びカラー濾紙ＣＲ２に純水を垂らして浸透させる過程を示す。図４～図７には、各図において左側にカラー濾紙ＣＲ１を示し、右側にカラー濾紙ＣＲ２を示している。 4 to 7 show the process of dripping and penetrating pure water into the color filter paper CR1 and the color filter paper CR2. 4 to 7, the color filter paper CR1 is shown on the left side in each figure, and the color filter paper CR2 is shown on the right side.
図４に示すように、本実施形態に係る製造方法によらずに製造したカラー濾紙ＣＲ２に水滴を点下し、当該点下の13秒後に、本実施形態に係る製造方法によりに製造したカラー濾紙ＣＲ１に水滴を点下する。 As shown in FIG. 4, water droplets are dropped on the color filter paper CR2 manufactured without using the manufacturing method according to the present embodiment, and 13 seconds after the water drops drop, the color filter paper manufactured using the manufacturing method according to the present embodiment Drop a drop of water onto filter paper CR1.
続いて、図５に、カラー濾紙ＣＲ２に水滴を点下した時点から14秒後（図４に示した状態から1秒後）における、カラー濾紙ＣＲ１及びカラー濾紙ＣＲ２の状態を示す。 Next, FIG. 5 shows the states of the color filter paper CR1 and the color filter paper CR2 14 seconds after the water droplets were dropped on the color filter paper CR2 (1 second after the state shown in FIG. 4).
図６に、カラー濾紙ＣＲ２に水滴を点下した時点から15秒後（図４に示した状態から2秒後）における、カラー濾紙ＣＲ１及びカラー濾紙ＣＲ２の状態を示す。 FIG. 6 shows the states of the color filter paper CR1 and the color filter paper CR2 15 seconds after the water droplets were dropped on the color filter paper CR2 (2 seconds after the state shown in FIG. 4).
図７に、カラー濾紙ＣＲ２に水滴を点下した時点から16秒後（図４に示した状態から3秒後）における、カラー濾紙ＣＲ１及びカラー濾紙ＣＲ２の状態を示す。 FIG. 7 shows the states of the color filter paper CR1 and the color filter paper CR2 16 seconds after the water droplets were dropped on the color filter paper CR2 (3 seconds after the state shown in FIG. 4).
このように図４～図７に示すように、本実施形態に係る製造方法により製造したカラー濾紙ＣＲ１には、本実施形態に係る製造方法によらずに製造したカラー濾紙ＣＲ２よりも13秒遅れて水滴が点下されているにも拘わらず、カラー濾紙ＣＲ１の方が、カラー濾紙ＣＲ２よりも水滴が早く浸透する。 As shown in FIGS. 4 to 7, the color filter paper CR1 manufactured by the manufacturing method according to the present embodiment has a delay of 13 seconds compared to the color filter paper CR2 manufactured without using the manufacturing method according to the present embodiment. Even though the water droplets are dripped on the color filter paper CR1, the water droplets permeate through the color filter paper CR1 more quickly than the color filter paper CR2.
ＣＲ１ カラー濾紙 CR1 color filter paper
Claims (3)
樹脂基材、カーボンブラック及び顔料の合計を100としたときに、樹脂基材79～90、カーボンブラック9.9～20、かつ染料由来の顔料0.1～1以下の比率とした条件を満たし、濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とした塗料を用いて前記濾紙基材が着色され、
前記塗料により着色される前記濾紙基材として、厚み100μmとしたときに、18～90ｇ/m2の重さを有するものが用いられる、カラー濾紙。 A color filter paper for laboratory tests,
When the total of resin base material, carbon black, and pigment is 100, the ratio of resin base material is 79 to 90, carbon black is 9.9 to 20, and dye-derived pigment is 0.1 to 1. The filter paper base material is colored using a paint with a paint weight of 0.4 g or less applied per 100 cm 2 of area,
A color filter paper having a weight of 18 to 90 g/m 2 when the thickness is 100 μm is used as the filter paper base material colored with the paint.
樹脂基材、カーボンブラック、及び顔料の合計を100としたときに、樹脂基材79～90、カーボンブラック9.9～20かつ染料由来の顔料0.1～１以下の比率とした条件を満たし、
濾紙基材の面積100cm2あたりに塗布する塗料重さを0.4g以内とした塗料を用いて前記濾紙基材を着色し、
更に、前記塗料により着色される前記濾紙基材として、厚み100μmとしたときに、18～90ｇ/m2の重さのものを用いる、検体検査用のカラー濾紙の製造方法。 A method for producing color filter paper for laboratory testing, the method comprising:
When the total of the resin base material, carbon black, and pigment is 100, the ratio of the resin base material is 79 to 90, the carbon black is 9.9 to 20, and the dye-derived pigment is 0.1 to 1.
Coloring the filter paper base material using a paint whose paint weight is within 0.4 g per 100 cm 2 of area of the filter paper base material,
Furthermore, a method for producing color filter paper for laboratory testing, wherein the filter paper base material colored with the paint has a weight of 18 to 90 g/m 2 when the thickness is 100 μm .
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