JPH0731185B2 - How to track the solidification process of pigment coatings on paper - Google Patents
How to track the solidification process of pigment coatings on paperInfo
- Publication number
- JPH0731185B2 JPH0731185B2 JP61156327A JP15632786A JPH0731185B2 JP H0731185 B2 JPH0731185 B2 JP H0731185B2 JP 61156327 A JP61156327 A JP 61156327A JP 15632786 A JP15632786 A JP 15632786A JP H0731185 B2 JPH0731185 B2 JP H0731185B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- coating
- light
- solidification process
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 26
- 238000000576 coating method Methods 0.000 title claims description 21
- 238000007711 solidification Methods 0.000 title claims description 16
- 230000008023 solidification Effects 0.000 title claims description 16
- 239000000049 pigment Substances 0.000 title claims description 9
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000002834 transmittance Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/34—Paper
- G01N33/343—Paper pulp
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/32—Paints; Inks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/8422—Investigating thin films, e.g. matrix isolation method
- G01N2021/8427—Coatings
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Pathology (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Medicinal Chemistry (AREA)
- Food Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Paper (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、紙の顔料コーティングの固化工程を追尾、す
なわち、フォローする方法に関する。Description: FIELD OF THE INVENTION The present invention relates to a method of tracking, ie following, the solidification step of pigment coating of paper.
現行の方法を使用した場合、紙のコーティングの固化過
程をコントロールすることは非常に問題が多く、また、
固化の進行を常用の方法で追尾することは不可能であ
る。しかし、特に塗被紙の乾燥過程を精確にコントロー
ルするため、固化過程の追尾を行なうことは重要であ
る。すなわち、固化過程を精確に追尾した場合に限っ
て、乾燥過程を調整しかつ最適化することが可能にな
る。なお、本発明は、紙の乾燥方法に係わるものではな
くて、上記した固化過程のみを追尾する方法に係る。Controlling the solidification process of the paper coating is very problematic when using current methods, and
It is impossible to track the progress of solidification in a conventional manner. However, it is important to track the solidification process in order to precisely control the drying process of the coated paper. That is, the drying process can be adjusted and optimized only if the solidification process is accurately tracked. The present invention does not relate to a method for drying paper, but relates to a method for tracking only the above-mentioned solidification process.
本発明の目的は、紙に塗被した顔料コーティングの固化
過程を追尾するための新しい方法を提供することにあ
る。本発明の目的は、特に、顔料コーティングの固化過
程のオンライン追尾に使用できる方法を提供することに
ある。It is an object of the present invention to provide a new method for tracking the solidification process of a pigment coating applied to paper. It is an object of the invention, inter alia, to provide a method which can be used for on-line tracking of the solidification process of pigment coatings.
上記した目的は、本発明によれば、紙の顔料コーティン
グの固化過程を追尾する方法であって、紙に照明を与
え、そして透過光の強度、紙の明るさ（光の拡散反射）
及び／又は光の光沢度をコーティング適用の瞬間からの
経過時間ｔの函数として測定することを特徴とする方法
によって達成することができる。According to the present invention, the above-mentioned object is, according to the present invention, a method of tracking the solidification process of a pigment coating of paper, which comprises illuminating the paper, and the intensity of transmitted light, the brightness of the paper (diffuse reflection of light).
And / or it can be achieved by a method characterized in that the gloss of the light is measured as a function of the time t elapsed from the moment of application of the coating.
本発明は、紙中に含まれる水分によってひきおこされる
光の透過と光の分散を、特にコーティング適用の瞬間か
らの経過時間の函数として、追尾することを基礎として
いる。本発明の方法によれば、塗被紙の光の透過率ある
いは明るさ（拡散反射）あるいは光沢度をコーティング
適用の瞬間からの時間の函数として測定する。The invention is based on tracking the light transmission and the light dispersion caused by the moisture contained in the paper, in particular as a function of the time elapsed from the moment of coating application. According to the method of the present invention, the light transmittance or brightness (diffuse reflection) or gloss of the coated paper is measured as a function of the time from the moment of applying the coating.
なかんずく、光の透過率Trを測定するのが特に有用であ
る。この明細書のなかにおいて、“光透過率”なる語
は、比I1／I0として定義することができ、また、上式
中、I1は、紙を透過した光の強度であり、そして、I
0は、紙の表面に向けて照射せしめられた光の強度であ
る。Above all, it is particularly useful to measure the light transmittance T r . In this specification, the term "light transmission" can be defined as the ratio I 1 / I 0 , where I 1 is the intensity of light transmitted through the paper, and , I
0 is the intensity of light emitted toward the surface of the paper.
本発明は、多くの試験の結果に基づいている。これらの
試験結果から、塗被層中における水分含有量（含水量）
は塗被紙の光透過率、明るさ又は光沢度によってすぐれ
た形で特徴づけ得るということが認められた。紙の透過
率（transmission）と光の透過率（penetration）と
は、紙の表面のところでコーティングの顔料の粒子間の
空気の入った空隙が形成されるや否や、非常に急激に低
下する。同時に、紙の表面の明るさが含水量の低下とと
もに増大する；これが、顔料コーティングの固化過程を
明るさの測定を用いて追尾することの基礎となってい
る。さらに、湿った紙は高い光沢度を有しており、この
光沢度が含水量の低下とともに低下する；これが、顔料
コーティングの固化過程を光沢度の測定を用いて追尾す
るための基礎となっている。The present invention is based on the results of many tests. From these test results, the water content (water content) in the coating layer
It has been found that can be characterized excellently by the light transmission, brightness or gloss of the coated paper. The paper transmission and the light penetration drop very sharply as soon as air-filled voids are formed between the particles of the coating pigment at the surface of the paper. At the same time, the brightness of the paper surface increases with decreasing water content; this is the basis for tracking the solidification process of pigment coatings using brightness measurements. Furthermore, wet papers have a high gloss, which decreases with decreasing water content; this is the basis for tracking the solidification process of pigment coatings using gloss measurements. There is.
紙の光透過率をコーティング適用の瞬間からの経過時間
の函数として測定すると、透過率の低下は初期において
非常にゆるやかであること；ゆるやかに低下する段階に
続いて、急激に透過率が低下し、また、この段階は、紙
のコーティングの粒子間で空気の入った空気が形成され
ることに対応すること、が判る。このような臨界範囲の
急激な低下の後、透過率の非常にゆるやかな低下が続
き、ここでの透過率の値は乾燥した紙のそれに近似して
いる。また、明るさ及び光沢度も、上記したものと同様
にして、時間の函数として変化する。When the light transmittance of the paper is measured as a function of the time elapsed from the moment of applying the coating, the decrease in transmittance is very gradual in the initial stage; a gradual decrease is followed by a rapid decrease in transmittance. It can also be seen that this step also corresponds to the formation of aerated air between the particles of the paper coating. Such a sharp drop in the critical range is followed by a very slow drop in transmittance, where the transmittance values approximate those of dried paper. Further, the brightness and the glossiness also change as a function of time in the same manner as described above.
湿った紙の透過率、明るさ及び／又は光沢度を、乾燥し
た紙の透過率、明るさ及び光沢度の測定と同一の手法で
測定する。したがって、この明細書において、この公知
な技法についてのより詳細な説明を省略する。The transmittance, brightness and / or gloss of wet paper is measured in the same manner as the transmittance, brightness and gloss of dry paper. Therefore, a more detailed description of this known technique is omitted herein.
本発明によれば、臨界的な固化範囲にわたって、固化の
程度を精確に追尾することが可能であり、したがって、
この可能性にもとづいて、本発明の有用性が導びかれ
る。According to the present invention, it is possible to accurately track the degree of solidification over a critical solidification range, and thus
Based on this possibility, the usefulness of the present invention is derived.
本発明の方法によれば、乾燥を修正することができ、そ
してこの新しい方法によって乾燥工程を最適化すること
ができる。The method according to the invention makes it possible to modify the drying and to optimize the drying process by this new method.
以下において、紙のウェブにパイロットプラントスケー
ルでコーティングを適用する間に乾燥試験で得られた透
過曲線を示す添付の図面を参照しならが、本発明の１実
施態様を示す実施例をより詳細に説明する。In the following, with reference to the accompanying drawings, which show the transmission curves obtained in the dry test during the application of the coating on a paper web on a pilot plant scale, an example illustrating one embodiment of the invention is described in more detail explain.
この試験では、紙に、その１側面から、一定出力の光源
を使用して照明を与えた。光の透過率、すなわち、透過
した光の強度と紙の表面に照射せしめられた光の強度と
の比を、コーティング適用の直後、そしてさらにコーテ
ィング適用の瞬間から経過した時間ｔの函数として測定
した。この試験では、コーティング適用の直後に測定し
た透過率の値を100％とし、そして時間の函数として得
られた値を図面のグラフに曲線としてプロットした。図
面から、Tr＝50％からTr＝90％に及び図面に表示の臨界
固化範囲において透過率の急激な低下を認めることがで
きる。In this test, the paper was illuminated from one side using a constant power light source. The light transmittance, that is, the ratio of the intensity of the transmitted light to the intensity of the light applied to the surface of the paper was measured as a function of time t immediately after the coating application and further from the moment of the coating application. . In this test, the transmittance value measured immediately after application of the coating was taken as 100%, and the value obtained as a function of time was plotted as a curve in the graph of the drawing. From the drawing, it is possible to recognize a sharp decrease in the transmittance from Tr = 50% to Tr = 90% and in the critical solidification range shown in the drawing.
本発明は、特許請求の範囲に記載した方法に適用される
べきものであり、上記実施例に記載のものに限定される
ものではない。したがって、本発明の方法では、任意の
波長の光、有利には例えば可視領域の光を使用すること
ができる。The present invention should be applied to the method described in the claims, and is not limited to the one described in the above embodiment. Thus, light of any wavelength can be used in the method according to the invention, preferably light in the visible range, for example.
図面は、本発明の１実施例による透過曲線を示したグラ
フである。The drawing is a graph showing a transmission curve according to an embodiment of the present invention.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭53−3889（ＪＰ，Ａ) 特開 昭52−128196（ＪＰ，Ａ) 特公 昭56−13242（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-53-3889 (JP, A) JP-A-52-128196 (JP, A) JP-B-56-13242 (JP, B2)
Claims (2)
の拡散反射及び／又は紙の光沢度をコーティング適用の
瞬間からの経過時間ｔの函数として測定することを特徴
とする、紙の顔料コーティングの固化過程を追尾する方
法。1. A paper, characterized in that the paper is illuminated and the intensity of the transmitted light, the diffuse reflection of the paper and / or the gloss of the paper is measured as a function of the time t elapsed from the moment of application of the coating. To track the solidification process of the pigment coating of.
られた光の強度、紙の拡散反射又は紙の光沢度であり、
そして、I1は、紙を透過した光の強度、紙の拡散反射又
は紙の光沢度である）をコーティング適用の瞬間からの
経過時間ｔの函数として測定する、特許請求の範囲第１
項に記載の方法。2. A ratio I 1 / I 0 (wherein I 0 is the intensity of light irradiated on the paper, the diffuse reflection of the paper or the glossiness of the paper,
And I 1 is the intensity of light transmitted through the paper, the diffuse reflection of the paper, or the glossiness of the paper) as a function of the time t elapsed from the moment of applying the coating.
The method described in the section.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI852648A FI71020C (en) | 1985-07-04 | 1985-07-04 | FOERFARANDE FOER ATT FOELJA PAPPERS PIGMENTPAOLAEGGNINGS STELNINGSPROCESS |
| FI852648 | 1985-07-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6258000A JPS6258000A (en) | 1987-03-13 |
| JPH0731185B2 true JPH0731185B2 (en) | 1995-04-10 |
Family
ID=8521083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61156327A Expired - Lifetime JPH0731185B2 (en) | 1985-07-04 | 1986-07-04 | How to track the solidification process of pigment coatings on paper |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0731185B2 (en) |
| DE (1) | DE3622193C2 (en) |
| FI (1) | FI71020C (en) |
| FR (1) | FR2587494B1 (en) |
| GB (1) | GB2178843B (en) |
| SE (1) | SE502685C2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2667940B1 (en) * | 1990-10-11 | 1992-12-18 | Centre Tech Ind Papier | PROCESS FOR CONTINUOUSLY MEASURING THE DYNAMIC WATER RETENTION OF A COATING ON A CARRIER AND IN PARTICULAR ON A SHEET OF PAPER. |
| DE4442240A1 (en) * | 1994-11-28 | 1996-05-30 | Fogra Forschungsgesellschaft D | Fast determn. of residual solvent in gravure print |
| JP2000511604A (en) * | 1997-03-27 | 2000-09-05 | フォイト ズルツァー パピーアマシーネン ゲゼルシャフト ミット ベシュレンクテル ハフツング | Method and apparatus for coating a running material web, in particular made of paper or cardboard, with a liquid or pasty coating medium, a method for producing a coated product web |
| US6184991B1 (en) * | 1999-04-19 | 2001-02-06 | Hewlett-Packard | Apparatus and method of measuring dry time of printing composition |
| US6805899B2 (en) | 2002-01-30 | 2004-10-19 | Honeywell International Inc. | Multi-measurement/sensor coating consolidation detection method and system |
| RU2264624C2 (en) * | 2004-02-11 | 2005-11-20 | Научно-исследовательский институт Гознака - Государственное предприятие | Method for determining speed of absoprtion of oil by paper |
| JP5569738B2 (en) * | 2010-10-01 | 2014-08-13 | 公益財団法人鉄道総合技術研究所 | Liquid state evaluation method for porous material and liquid state evaluation system for porous material |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3220378A (en) * | 1962-06-15 | 1965-11-30 | Norman A Lefevre | Means to monitor operation of a coating and drying apparatus |
| US3388594A (en) * | 1966-11-09 | 1968-06-18 | Borden Co | Apparatus for measuring the drying length of coating materials |
| JPS52128196A (en) * | 1976-04-20 | 1977-10-27 | Hitachi Shipbuilding Eng Co | Method of measuring water content of thin material free from increment of thickness due to water contained |
| JPS533889A (en) * | 1976-06-30 | 1978-01-13 | Matsushita Electric Works Ltd | Measuring method for permeability of stencil paper |
| JPS5613242A (en) * | 1979-07-16 | 1981-02-09 | Miyata Jidoki Hanbai Kk | Car body inspection and service equipment |
-
1985
- 1985-07-04 FI FI852648A patent/FI71020C/en not_active IP Right Cessation
-
1986
- 1986-07-01 SE SE8602925A patent/SE502685C2/en not_active IP Right Cessation
- 1986-07-02 DE DE3622193A patent/DE3622193C2/en not_active Expired - Fee Related
- 1986-07-04 GB GB8616383A patent/GB2178843B/en not_active Expired
- 1986-07-04 JP JP61156327A patent/JPH0731185B2/en not_active Expired - Lifetime
- 1986-07-04 FR FR868609784A patent/FR2587494B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| GB2178843A (en) | 1987-02-18 |
| FR2587494B1 (en) | 1991-10-25 |
| DE3622193C2 (en) | 1995-07-13 |
| JPS6258000A (en) | 1987-03-13 |
| SE8602925D0 (en) | 1986-07-01 |
| DE3622193A1 (en) | 1987-01-15 |
| GB2178843B (en) | 1989-07-12 |
| FI71020C (en) | 1986-10-27 |
| FI71020B (en) | 1986-07-18 |
| SE8602925L (en) | 1987-01-05 |
| FI852648A0 (en) | 1985-07-04 |
| GB8616383D0 (en) | 1986-08-13 |
| FR2587494A1 (en) | 1987-03-20 |
| SE502685C2 (en) | 1995-12-11 |
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