CN1687523A - Low-density office paper - Google Patents
Low-density office paper Download PDFInfo
- Publication number
- CN1687523A CN1687523A CN 200510010722 CN200510010722A CN1687523A CN 1687523 A CN1687523 A CN 1687523A CN 200510010722 CN200510010722 CN 200510010722 CN 200510010722 A CN200510010722 A CN 200510010722A CN 1687523 A CN1687523 A CN 1687523A
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- paper
- density
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- pulp
- office
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Abstract
This is new low density office paper. It improved the paper material to reduce the paper density and improve its thickness, therefore the erect intensity and anti-transparency of paper are improved, along with the improvement of using capability of paper low gram weight. The cost of office paper is reduced.
Description
Technical field
The invention belongs to papermaking.Improved low-density office paper on paper making pulp, density, opacity and deflection particularly.
Technical background
Existing paper in the office (copy paper, all-in-one with paper, print duplication paper, printing paper) all is to adopt full chemical pulp to manufacture paper with pulp.Calculating raw material chemical pulping slurry yield per ton with whole wood pulp is about 42%; The machinery pulping slurry yield is 70-95%.Along with popularizing of office automation, the demand of paper in the office can be increasing, and for saving the spending of clerical cost, I have developed low-density office paper.
Summary of the invention
Technical problem to be solved by this invention is that the slurry to papermaking changes paper density is reduced, and thickness improves, thereby the deflection of paper and anti-transparency are improved, and the paper serviceability of low grammes per square metre is improved thereupon, reduces the cost of office paper.
Solve technical problem of the present invention and divided for one to three step: (one), paper making pulp is changed, pull an oar with mechanical pulp and mix or mix and pull an oar, in mixed slurry, add the 10%-25% filler and manufacture paper with pulp; Or full mechanical pulp is manufactured paper with pulp.Because the low paper density of manufacturing paper with pulp out of mechanical pulp density is also low, make paper sheet thickness, deflection, anti-transparency increase substantially (two), neutral papermaking can make the paper ageing resistance improve.In neutral sizing retention system, add cationic starch and can adsorb fiber fines and filler in the paper pulp, improve the initial journey retention of fines and ash content, promote the stability of AKD micelle and improve the retention of AKD on fiber to improve strength of paper simultaneously.At the pressure of paper machine calender portion adjustment calender, the paper bulk is improved, paper density (tightness) is 0.45-0.70g/cm
3, make paper thickness, anti-transparency, deflection reach the highest.(3), paper externally sizing or dab can increase the surface strength of paper, and the deflection of paper is improved once again.Volume resistance is controlled at 10
8-10
12Ohm.
Through the above (once) manufacturing paper with pulp to (three) scheme to make the paper internal structure change, serviceability first mate's degree improves, that is: the paper of grammes per square metre is hanged down in use, its thickness, opacity and deflection increase substantially, even (low density paper of 60 grams can reach the effect of traditional paper 70-80 gram to reach the paper of traditional high grammes per square metre.), its production cost also is lower than the production cost of traditional paper.Even if low density paper is the same with conventional paper ton valency, 60 gram low density paper can substitute 70 grams or 80 gram traditional paper, and its clerical cost also can reduce 14%-25%.
Specific implementation method
Implement (not having the paper mill of slurrying capacity can purchase slurry production as required) in paper mill, all can manufacture paper with pulp with fourdrinier machine, vertical forming machine or cylinder mould machine with machinery pulping and chemical pulping ability.
Claims (3)
1. a low-density office paper is characterized in that internal structure is the chemical pulp that mechanical pulp is joined 10%-30%.
2. be 0.45-0.70g/cm by the described density of claim 1 (tightness)
3
3. by described externally sizing of claim 1 or dab.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010722 CN1687523A (en) | 2005-04-01 | 2005-04-01 | Low-density office paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510010722 CN1687523A (en) | 2005-04-01 | 2005-04-01 | Low-density office paper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1687523A true CN1687523A (en) | 2005-10-26 |
Family
ID=35305565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510010722 Pending CN1687523A (en) | 2005-04-01 | 2005-04-01 | Low-density office paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1687523A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8177939B2 (en) | 2005-12-15 | 2012-05-15 | Dow Global Technologies Llc | Cellulose articles containing an additive composition |
| CN102852041A (en) * | 2012-08-31 | 2013-01-02 | 金华盛纸业（苏州工业园区）有限公司 | Preparation method for writing paper |
-
2005
- 2005-04-01 CN CN 200510010722 patent/CN1687523A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8177939B2 (en) | 2005-12-15 | 2012-05-15 | Dow Global Technologies Llc | Cellulose articles containing an additive composition |
| CN102852041A (en) * | 2012-08-31 | 2013-01-02 | 金华盛纸业（苏州工业园区）有限公司 | Preparation method for writing paper |
| CN102852041B (en) * | 2012-08-31 | 2014-09-24 | 金华盛纸业（苏州工业园区）有限公司 | Preparation method for writing paper |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |