CN101122567A - Method and device for quickly detecting fluorescent whitening agent of paper and paper board - Google Patents
Method and device for quickly detecting fluorescent whitening agent of paper and paper board Download PDFInfo
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- CN101122567A CN101122567A CNA2007100279503A CN200710027950A CN101122567A CN 101122567 A CN101122567 A CN 101122567A CN A2007100279503 A CNA2007100279503 A CN A2007100279503A CN 200710027950 A CN200710027950 A CN 200710027950A CN 101122567 A CN101122567 A CN 101122567A
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Abstract
The invention relates to a method and a device used for rapidly detecting paper and fluorescent whitening agent in a paperboard. The method includes the following steps. Firstly, ultraviolet light, the wave length of which is bigger or equal to 244nm but smaller or equal to 375 nm, is used to irradiate directly on a matter to be detected. Then the next step is to observe that whether the mater to be detected is provided with purple or blue white fluorescence or fluorescence reflection points. If the matter to be detected is equipped with purple or blue white fluorescence or fluorescence reflection points, the matter contains fluorescent whitening agent. If not, the matter to be detected contains no fluorescent whitening agent. The device includes a base. And a stent extends from the base. The stent is equipped with a light source, which can emit the ultraviolet with the wave length. The detection test result proves that the fluorescence detection device has the advantages of low cost, high detection sensitivity, visual and practical performances, accurate and reliable result and convenient and rapid use.
Description
Technical field
The present invention relates to the method and the device of fluorescer in a kind of fast detecting paper and the cardboard.
Background technology
Paper and cardboard are the commodity of using always, and along with the raising of living standards of the people, its turnout and consumption figure all constantly increase.Fluorescer (Fluorescent Whitening Agent, be called for short FWA) be the whitening agent that paper industry extensively adopts, it itself is a kind of colourless organic compound, principal ingredient is the diphenylethylene material, it can not only reflect visible light, can also absorbing wavelength be the ultraviolet light of 230nm～400nm, about 350nm, locate maximum absorption usually, and send the blue or hepatic visible light of 400nm～500nm.Add this material of launching royal purple light in materials such as paper or cardboard, the yellow " covering " that people's naked eyes will be seen presents pleasing white.Because fluorescer itself is colourless or light, adds that its consumption is few, so its existence in base stock can not influence the color of base stock itself, the fluorescence that it sends then can make the white of base stock whiter, colour is more gorgeous.
But fluorescer is when improving paper and cardboard whiteness and gloss, it also is subjected to people's query to the close friend of environment and harmony, to the security of health of human body, there is research to think that the excessive fluorescer of the long-term contact of human body can increase the probability of allergic dermatitis, even might make cell produce variation, there is potential carcinogenic factor, causes personal injury.When people use paper and cardboard, the skin of human body unavoidably will contact with paper or cardboard, therefore the fluorescer in paper and the cardboard may have harmful effect to health of human body, be necessary very whether fluorescer is arranged in fast detecting paper and the cardboard, help the consumer to understand the security of paper used in everyday and cardboard, help the consumer correctly to select paper and cardboard for use.
Because fluorescer is by the ultraviolet light in the light is converted into the increase that visible light is realized the paper whiteness, the difference of the whiteness when therefore at present the fluorescer in test paper and the cardboard adopts and measures paper and shine when ultraviolet light and no ultraviolet light are arranged is come the content of fluorescer in the secondary indication paper, difference is big more, the content that shows the fluorescer in the paper is high more, otherwise difference is more little then represents fluorescent brightener levels more little (this method is called for short fluorescent brightening degree method) in the paper.This detection method generally will be measured with reflectance photometer in specialized laboratory, and instrument generally is not easy to obtain, and operation is also complicated, and minute is long, and ordinary consumer is difficult to obtain and grasps.Simultaneously because the measuring error that instrument itself exists, could qualitatively judge after generally will regulation whiteness difference reaching certain degree (being generally) greater than+1%, and for being dispersed little punctate fluorescence whitening agent or fluorescent brightener levels in paper or the cardboard more after a little while, the fluorescent brightening degree is difficult to measure and accurately express, and causes testing result inaccurate.
Summary of the invention
The method that the purpose of this invention is to provide fluorescer in a kind of fast detecting paper and the cardboard, this method practicality, quick, and testing result is accurate.
Another object of the present invention provides the device of fluorescer in a kind of fast detecting paper and the cardboard, and this apparatus structure dexterity is light, cost is low, convenient to operation, and testing result is accurate.
For achieving the above object, the technical solution used in the present invention is:
The method of fluorescer in a kind of fast detecting paper and the cardboard, its special feature is, comprise the steps, at first with wavelength greater than or etc. 244nm, but less than or etc. the ultraviolet light of 375nm directly shine thing to be detected, observe fluorescence or fluorescence reflection spot that whether purple or blue and white are arranged on the thing to be detected then, contain fluorescer if any this thing to be detected then, this thing to be detected does not contain fluorescer as not having then.
Preferred ultraviolet wavelength is 365 ± 10nm or 254 ± 10nm.
The device of fluorescer in a kind of fast detecting paper and the cardboard, its special feature is, comprises a base, this base extends a support, on this support, be equipped with can send wavelength more than or equal to 244nm, but less than or etc. the light source of 375nm ultraviolet light.
The gauge tap of described light source wherein is installed on base.
Wherein said light source is one can only send the fluorescent light that wavelength is 365 ± 10nm ultraviolet light, another is to send the fluorescent light that wavelength is 254 ± 10nm ultraviolet light, or two can be sent the fluorescent light that wavelength is 365 ± 10nm and 254 ± 10nm ultraviolet light respectively.
The light shield of its direction of illumination of may command wherein is installed on light source.
Wherein light source be fixed on the support or light source with can be rack-mount along the mode that support moves.
Further, an adjustable support plate that can move along support wherein also is installed on the support between light source and the base.
The fluorescer that the principle of technical solution of the present invention is based in paper and the cardboard can absorbing wavelength be the ultraviolet light of 230nm～400nm; can farthest eliminate the interference of impurity in the detection of 365nm wavelength place to measuring; and to send wavelength be the blueness about 450nm or the characteristic of hyacinthine visible light; by sending wavelength is the fluorescent lamp paper about 365nm (can select wavelength for use to paper that particular provisions are arranged and cardboard is 254nm) or the surface of cardboard; fluorescer absorbs the visible light that sends behind the ultraviolet light about the 450nm that people's naked eyes can observe directly; the detection method simple and fast; the accuracy height; can design and manufacture the fluorescence detection device that has protection eyes annexes (light shield) in view of the above; the fluorescer that is used for fast detecting paper and cardboard; the detection test findings shows; this fluorescence detection device cost is low; the detection sensitivity height; directly perceived practical; the result accurately and reliably, and is convenient to use.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is that the A-A of Fig. 1 is to cut-open view;
Accompanying drawing 3 is circuit theory diagrams of the present invention.
Embodiment
Come the utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, pick-up unit of the present invention comprises a base 5, this base 5 extends upward a support 2, on this support 2, be equipped with and send the light source that wavelength is 365nm or 254nm ultraviolet light, the gauge tap K of this light source is installed on base 5, may command light source break-make or switch in forming the experimental process light source of light source, similarly gauge tap K generally adopts in existing light fixture.
Light source specifically can be one can only send the fluorescent light or that wavelength is the 365nm ultraviolet light and can only send the fluorescent light that wavelength is the 254nm ultraviolet light, or two can be sent the fluorescent light that wavelength is 365nm and 254nm ultraviolet light respectively, as being exactly to have adopted two fluorescent lights that can only send the different wave length ultraviolet light simultaneously among Fig. 1, and the light shield 1 (lampshade of similar desk lamp) of its direction of illumination of may command is installed on the fluorescent light, gauge tap K is installed on base 5, can switch two fluorescent lights, be illustrated in figure 2 as corresponding circuit theory diagrams.
As shown in Figure 1, the one adjustable support plate 3 that can move up and down along support 2 also is installed on the support 2 between light source and the base 5, similarly structure generally adopts in the prior art, as height-adjustable console mode fan etc., is used to regulate the distance between thing to be detected and the light source.In addition, light source can be fixed on the support 2 or being installed in along the mode that support 2 moves on the support 2, under the situation that does not have support 2, with hand or other clamping device thing to be detected is placed directly in that irradiation also is feasible under the light source.
One, pick-up unit operation steps of the present invention
1, sample (thing to be detected) preparation
With the sample of paper knife with paper or cardboard cutting one-tenth (5 * 5) cm, the paper number of plies of every part of sample is the number of plies of finished paper, also can be directly used in test by the size of sample packaging.
2, test procedure
(1) connects pick-up unit power supply, about 5 minutes of preheating;
(2) pulling the light source selector switch of pick-up unit to light source is the 365nm place, and at this moment fluorescent light sends the ultraviolet light that wavelength is 365nm; Can select light source if necessary is the 254nm place, and at this moment fluorescent light sends the ultraviolet light that wavelength is 254nm;
(3) sample is placed on the adjustable support plate of pick-up unit, make sample apart from the about 10-20cm of light source place, whether send the fluorescence of purple or blue and white from top to down in the visualization sample, if the fluorescence or the fluorescence reflection spot of purple or blue and white are arranged, then this sample has fluorescer, otherwise does not have fluorescer in the sample.
Two, the effect of pick-up unit of the present invention
Pick-up unit of the present invention has been successfully applied to the fast detecting test of fluorescer in the paper such as paper for daily use, food wrapper, detect 61 parts of paper for daily uses (comprising toilet paper, tissue, face tissue, paper handkerchief etc.) over nearly three months, wherein 27 duplicate samples do not detect fluorescer, and 34 duplicate samples detect fluorescer; Detect 9 parts of food wrapper and other paper and cardboards, wherein 7 duplicate samples do not detect fluorescer, and 2 duplicate samples detect fluorescer.
Have only 5～6 minutes the detection time of every duplicate samples (contain instrument preheating time), shorten about 5 hours detection time than fluorescent brightening degree method.Through evidence, this pick-up unit testing result is accurate, applied widely, be not subjected to the influence of fluorescer deployment conditions in paper and the cardboard, and fluorescent brightening degree method is for being dispersed little punctate fluorescence whitening agent or fluorescent brightener levels more after a little while in paper and the cardboard, and the fluorescent brightening degree is difficult to measure and accurately express.
Three, the key technical indexes of pick-up unit of the present invention is as follows
JQG365-A type fluorescent tube
JQG254-B type fluorescent tube
Two-way ultraviolet ray switch
Supply voltage: 200～250V; Supply frequency: 50Hz;
Fluorescent light light wavelength: 365nm ± 10nm; 254nm ± 10nm;
Fluorescent light service time:＞600 hours;
Adjustable support plate: size: 100mm * 100mm; But step-less adjustment height.
The usefulness of the reference when foregoing is only implemented for technical solution of the present invention does not constitute any restriction to scope of patent protection of the present invention.
Claims (7)
1. the method for fluorescer in fast detecting paper and the cardboard, it is characterized in that, comprise the steps: at first to use wavelength more than or equal to 244nm, but the ultraviolet light that is less than or equal to 375nm directly shines thing to be detected, observe fluorescence or fluorescence reflection spot that whether purple or blue and white are arranged on the thing to be detected then, contain fluorescer if any this thing to be detected then, this thing to be detected does not contain fluorescer as not having then.
2. the method for fluorescer in a kind of fast detecting paper as claimed in claim 1 and the cardboard, it is characterized in that: ultraviolet wavelength is 365 ± 10nm or 254 ± 10nm.
3. the device of fluorescer in fast detecting paper or the cardboard, it is characterized in that: comprise a base (5), this base (5) extends a support (2), is equipped with on this support (2) and can sends wavelength more than or equal to 244nm, but be less than or equal to the light source of 375nm ultraviolet light.
4. the device of fluorescer in a kind of fast detecting paper as claimed in claim 3 and the cardboard is characterized in that: the gauge tap that described light source wherein is installed on base (5).
5. the device of fluorescer in a kind of fast detecting paper as claimed in claim 3 and the cardboard, it is characterized in that: wherein said light source is one can only send the fluorescent light that wavelength is 365 ± 10nm ultraviolet light, another is to send the fluorescent light that wavelength is 254 ± 10nm ultraviolet light, or two can be sent the device that wavelength is a fluorescer in 365 ± 10nm fast detecting paper and the cardboard respectively, it is characterized in that: the light shield (1) that its direction of illumination of may command wherein is installed on light source.
6. the device of fluorescer in a kind of fast detecting paper as claimed in claim 3 and the cardboard is characterized in that: wherein light source be fixed on that support (2) is gone up or light source being installed on the support (2) along the mode that support (2) moves.
7. as the device of fluorescer in any described a kind of fast detecting paper and the cardboard in the claim 3 to 6, it is characterized in that: wherein also being equipped with one on the support (2) between light source and the base (5) can be along the mobile adjustable support plate (3) of support (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100279503A CN101122567A (en) | 2007-05-11 | 2007-05-11 | Method and device for quickly detecting fluorescent whitening agent of paper and paper board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100279503A CN101122567A (en) | 2007-05-11 | 2007-05-11 | Method and device for quickly detecting fluorescent whitening agent of paper and paper board |
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| CN101122567A true CN101122567A (en) | 2008-02-13 |
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| CNA2007100279503A Pending CN101122567A (en) | 2007-05-11 | 2007-05-11 | Method and device for quickly detecting fluorescent whitening agent of paper and paper board |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323244A (en) * | 2011-05-30 | 2012-01-18 | 江南大学 | Method for rapidly detecting portable food packaging fluorescent material and device |
| CN102495036A (en) * | 2011-12-07 | 2012-06-13 | 长春美泰科技有限公司 | On-site detector for fluorescent bleaching agent in living paper products |
| CN102525326A (en) * | 2011-12-17 | 2012-07-04 | 张月婵 | Automatic detection paper tube for toilet paper fluorescent brighteners |
| CN103063638A (en) * | 2012-12-27 | 2013-04-24 | 通标标准技术服务(上海)有限公司 | Rapid detection method for fluorescent whitening agent on fabrics |
| CN103278484A (en) * | 2013-05-11 | 2013-09-04 | 徐培实 | Portable fluorescent brightener detector |
| CN103604764A (en) * | 2013-11-14 | 2014-02-26 | 邢台市产品质量监督检验所 | Method for detecting fluorescent brightener in food and paper packaging thereof |
| CN104342884A (en) * | 2013-07-31 | 2015-02-11 | 海尔集团公司 | Washing machine fluorescent residual detection device and method |
| CN105973785A (en) * | 2016-06-24 | 2016-09-28 | 广西金桂浆纸业有限公司 | Device for testing boundary permeability resistance of paper |
| CN106770099A (en) * | 2016-12-04 | 2017-05-31 | 常州恒方大高分子材料科技有限公司 | A kind of fast qualitative quantitative determination powder or working of plastics whether the method containing fluorescent whitening agent |
| WO2017206942A1 (en) * | 2016-06-02 | 2017-12-07 | Henkel (China) Investment Co., Ltd. | Portable ultraviolet excited fluorescence intensity detector |
| CN109030359A (en) * | 2018-08-02 | 2018-12-18 | 长葛市大阳纸业有限公司 | A kind of paper test workbench |
| CN110687088A (en) * | 2019-10-18 | 2020-01-14 | 重庆理文卫生用纸制造有限公司 | Method for detecting fluorescent substance in toilet paper product |
-
2007
- 2007-05-11 CN CNA2007100279503A patent/CN101122567A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323244A (en) * | 2011-05-30 | 2012-01-18 | 江南大学 | Method for rapidly detecting portable food packaging fluorescent material and device |
| CN102495036A (en) * | 2011-12-07 | 2012-06-13 | 长春美泰科技有限公司 | On-site detector for fluorescent bleaching agent in living paper products |
| CN102525326A (en) * | 2011-12-17 | 2012-07-04 | 张月婵 | Automatic detection paper tube for toilet paper fluorescent brighteners |
| CN103063638A (en) * | 2012-12-27 | 2013-04-24 | 通标标准技术服务(上海)有限公司 | Rapid detection method for fluorescent whitening agent on fabrics |
| CN103278484A (en) * | 2013-05-11 | 2013-09-04 | 徐培实 | Portable fluorescent brightener detector |
| CN104342884A (en) * | 2013-07-31 | 2015-02-11 | 海尔集团公司 | Washing machine fluorescent residual detection device and method |
| CN104342884B (en) * | 2013-07-31 | 2018-10-12 | 青岛海尔滚筒洗衣机有限公司 | A kind of the residue detection device and detection method of washing machine fluorescer |
| CN103604764A (en) * | 2013-11-14 | 2014-02-26 | 邢台市产品质量监督检验所 | Method for detecting fluorescent brightener in food and paper packaging thereof |
| WO2017206942A1 (en) * | 2016-06-02 | 2017-12-07 | Henkel (China) Investment Co., Ltd. | Portable ultraviolet excited fluorescence intensity detector |
| US10718714B2 (en) | 2016-06-02 | 2020-07-21 | Henkel (China) Investment Co. Ltd. | Portable ultraviolet excited fluorescence intensity detector |
| CN105973785A (en) * | 2016-06-24 | 2016-09-28 | 广西金桂浆纸业有限公司 | Device for testing boundary permeability resistance of paper |
| CN106770099A (en) * | 2016-12-04 | 2017-05-31 | 常州恒方大高分子材料科技有限公司 | A kind of fast qualitative quantitative determination powder or working of plastics whether the method containing fluorescent whitening agent |
| CN109030359A (en) * | 2018-08-02 | 2018-12-18 | 长葛市大阳纸业有限公司 | A kind of paper test workbench |
| CN110687088A (en) * | 2019-10-18 | 2020-01-14 | 重庆理文卫生用纸制造有限公司 | Method for detecting fluorescent substance in toilet paper product |
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