CN201420208Y - Quantitative filter paper - Google Patents
Quantitative filter paper Download PDFInfo
- Publication number
- CN201420208Y CN201420208Y CN2009201214017U CN200920121401U CN201420208Y CN 201420208 Y CN201420208 Y CN 201420208Y CN 2009201214017 U CN2009201214017 U CN 2009201214017U CN 200920121401 U CN200920121401 U CN 200920121401U CN 201420208 Y CN201420208 Y CN 201420208Y
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- China
- Prior art keywords
- filter paper
- paper
- quantitative
- quantitative filter
- utility
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- 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.)
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Abstract
The utility model relates to filter paper, and aims to provide quantitative filter paper for chemical experiments. The quantitative filter paper comprises a filtering layer made of paper, and an ashless fiber layer made of cotton fiber is uniformly coated on the surface of the filtering layer. In the quantitative filter paper, the ashless fiber layer made of cotton fiber is coated on the surface of the filtering layer and barely contains ash, so that the quantitative filter paper is applicable to precise quantitative analytical tests; moreover, the paper has simple manufacturing process and low cost.
Description
Technical field
The utility model relates to a kind of filter paper, particularly relates to the quantitative filter paper that a kind of chemical test is used.
Background technology
Quantitative filter paper belongs to cellulose filter paper, is a kind of paper with good strainability, and its papery is loose, and liquid is had strong absorbent properties, therefore is commonly used for the filter medium in the chemical analysis experiment, and solution is separated with solid.The quantitative filter paper of present stage use mainly uses gravimetric analysis trial-production test and corresponding analysis experiment in quantitative chemical analysis, to measure the content of each part in the material.In manufacture process, paper pulp is earlier through persalt and hydrofluoric acid treatment, and the process distilled water wash, at last most of impurity in the paper fiber is removed, and so just can obtain a kind of qualified quantitative filter paper at quantitative filter paper.But, because what of residual ash content after the calcination, influence as a result to quantitative analysis is very big, therefore, needs the test of accurate quantitative analysis for some, just require quantitative filter paper can further control the amount that produces ash content after its ashing, generally all be to require well below 0.009%, and in present stage employed common quantitative filter paper, limited by material and production technology, production cost when reaching this and requiring can be very high, and is very uneconomical.
The utility model content
The purpose of this utility model is to overcome deficiency of the prior art, provides a kind of cost low accurate quantitative filter paper.
In order to address the above problem, the technical solution of the utility model is as follows:
A kind of quantitative filter paper comprises filter course made of paper, and the surface of described filter course also evenly is being coated with the ashless fibrage of one deck.
As a kind of preferred version of the present utility model, described ashless fibrage is made by cotton fiber.
Quantitative filter paper of the present utility model, the no ash fibrage of in filter course outer surface coating made of paper, making by cotton fiber, the ash in the no ash fibrage of this layer does not almost have, the accurate quantitative analytical test of therefore applicable do; And the manufacturing technique of entire paper is simple, and cost is not high yet.
Description of drawings
Fig. 1 is the structural representation of the utility model quantitative filter paper.
The specific embodiment
In conjunction with the accompanying drawings, below the utility model is described in further detail.
As shown in Figure 1, quantitative filter paper of the present utility model, the intermediate layer is a filter course 1 made of paper, and two outer surfaces up and down of filter course 1 evenly are being coated with one deck is not had ash fibrage 2, and this no ash fibrage 2 is made by cotton fiber.
Manufacturing process of the present utility model is as follows:
Selected raw material is a cotton linter, through degreasing, selected, adopt alkaline process to carry out boiling again, make that the a-cellulose reaches more than 91% in the slurry, bleaching then reaches more than 85% to whiteness, through making beating beating degree is reached about 20-22 ° of SR, on cylinder mould machine, manufacture paper with pulp then, be applied on the filter course again and form.
The final quantitative filter paper that is shaped of the utility model does not have lump such as macroscopic metal impurities, sand grains, ickings, does not have phenomenons such as pleat, streak, brocken spectrum, pin hole yet.
At last, it is also to be noted that what more than enumerate only is specific embodiment of the utility model.Obviously, the utility model is not limited to above examples of implementation, and many distortion can also be arranged.All distortion that those of ordinary skill in the art can directly derive or associate from the disclosed content of the utility model all should be thought protection domain of the present utility model.
Claims (2)
1. a quantitative filter paper comprises filter course made of paper, it is characterized in that, the surface of described filter course also evenly is being coated with the ashless fibrage of one deck.
2. quantitative filter paper according to claim 1 is characterized in that, described ashless fibrage is made by cotton fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201214017U CN201420208Y (en) | 2009-05-31 | 2009-05-31 | Quantitative filter paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201214017U CN201420208Y (en) | 2009-05-31 | 2009-05-31 | Quantitative filter paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201420208Y true CN201420208Y (en) | 2010-03-10 |
Family
ID=41806860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201214017U Expired - Fee Related CN201420208Y (en) | 2009-05-31 | 2009-05-31 | Quantitative filter paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201420208Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878642A (en) * | 2015-05-04 | 2015-09-02 | 杭州特种纸业有限公司 | Quantitative filter paper and preparing method and application thereof |
| CN105951528A (en) * | 2016-06-29 | 2016-09-21 | 杭州特种纸业有限公司 | Rapid quantitative filter paper and preparation method thereof |
-
2009
- 2009-05-31 CN CN2009201214017U patent/CN201420208Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104878642A (en) * | 2015-05-04 | 2015-09-02 | 杭州特种纸业有限公司 | Quantitative filter paper and preparing method and application thereof |
| CN105951528A (en) * | 2016-06-29 | 2016-09-21 | 杭州特种纸业有限公司 | Rapid quantitative filter paper and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100310 Termination date: 20150531 |
|
| EXPY | Termination of patent right or utility model |