CN102677533B - Two-side offset paper - Google Patents
Two-side offset paper Download PDFInfo
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- CN102677533B CN102677533B CN201210162925.7A CN201210162925A CN102677533B CN 102677533 B CN102677533 B CN 102677533B CN 201210162925 A CN201210162925 A CN 201210162925A CN 102677533 B CN102677533 B CN 102677533B
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Abstract
The invention provides two-side offset paper which comprises base paper and surface gelatinized layer formed on the surface of the base paper, paper pulp for making the base paper is obtained by mixing blanched short chemical fiber, blanched long chemical fiber and high-yield pulp, wherein the weight percentage content of the blanched short chemical fiber accounts for 50-80 percent, the weight percentage content of the blanched long chemical fiber accounts for 2-25 percent, and the weight percentage content of the high-yield content accounts for 5-30 percent; a dry strength intensifier with a dewatering intensifying function is additionally fed in the paper pulp; and the paper pulp is subjected to grinding treatment, and shore pulp beating degree is 23-36 degrees SR. The two-side offset paper effectively improves the dewatering function of the pulp by regulating the varieties and proportion of base paper pulp fibers, adding the dry strength intensifier with dewatering intensifying function into the pulp, and regulating the pulp beating degree through grinding the pulp, thus further improving the gram weight of the two-side offset paper.
Description
Technical field
The present invention relates to a kind of wood-free paper.
Background technology
Wood-free paper, also referred to as offset paper, is printing, and the preparation technology of its routine is two sides sizing material being coated on body paper in paper-making process, to improve its surface physical property, retractility, make it to the uniform absorption of ink, smoothness is good, and quality is closely opaque, and water repelling property is strong.
At present due to the limitation of paper machine design, the grammes per square metre of shaping wood-free paper of once manufacturing paper with pulp is usually lower, generally at below 120gsm, and more difficultly reaches more than 200gsm.By high grammes per square metre paper prepared by boxboard technique, owing to being sandwich construction, inter-layer bonding force is poor, easy layering; And having multilayer to combine due to paper, picture and text printing effect is fine and smooth not true to nature, and feel is not good enough.
Summary of the invention
In view of this, the wood-free paper that a kind of high grammes per square metre is provided is necessary.
A kind of wood-free paper, it table glue-line comprising body paper and be formed at body paper surface, the paper pulp of this body paper obtained adopts the mixing slurry of bleached chemical staple fibre, bleached chemical long fiber and high yield pulp, wherein the mass percentage of bleached chemical staple fibre is 50%-80%, the long stapled mass percentage of bleached chemical is 2-25%, and the mass percentage of high yield pulp is 5-30%; The dry strength agent having and increase dehydration effect is also added with in this paper pulp; This paper pulp is through defibrination process, and its degree Schopper-Riegler is 23-36 ° of SR.
Wood-free paper of the present invention is by adjusting kind and the proportioning of raw paper pulp fiber, add the dry strength agent having and increase dehydration effect in the slurry simultaneously, in addition to slurry defibrination adjustment beating degree, effectively improve the dehydrating function of slurry, thus the wood-free paper of obtained high grammes per square metre of manufacturing paper with pulp, grammes per square metre can reach 120-400gsm, relative to the wood-free paper of current conventional grammes per square metre, the paper scope of application improves far away, and described wood-free paper is one-time formed single layer structure, the inter-layer bonding force that the paper avoiding sandwich construction causes is low, easy layering, the appearance of feel and the problem such as printing performance is not good enough.
Detailed description of the invention
Wood-free paper of the present invention, it table glue-line comprising body paper and be formed at body paper surface.This wood-free paper has higher grammes per square metre, and grammes per square metre is 120-400gsm, and bulk is 1.0-2.0cm
3/ g.This table glue-line is coated body paper dry tack free by the size-press starch of routine and is obtained.This size-press starch can be enzyme starch or oxidized starch.
The paper pulp of this body paper obtained adopts the mixing slurry of bleached chemical staple fibre, bleached chemical long fiber and high yield pulp, wherein the mass percentage of bleached chemical staple fibre is 50%-80%, the long stapled mass percentage of bleached chemical is 2-25%, and the mass percentage of high yield pulp is 5-30%.The seeds that this bleached chemical staple fibre adopts can be white poplar, Eucalyptus, Acacia, maple etc.The seeds that this bleached chemical long fiber adopts can be Southern Pine, the north pine, dragon spruce, Oak Tree etc.
In the present invention, alleged high yield pulp is compared to bleach chemical pulp, has the slurry of the yield larger than bleach chemical pulp.Preferably refer to the slurry of the yield with 65%-95%.The types such as high yield pulp can be mechanical pulp, thermo-mechanical pulp (TMP), chemi-thermo-mechanical pulp (CTMP) and bleached chemical thermo-mechanical pulp (BCTMP) are starched or these are starched kind mixes and starches.Mechanical pulp is obtained by levigate or refining initial feed.Thermo-mechanical pulp in preparation process, improves steam pressure thus carries out refining to raw material.Chemi-thermo-mechanical pulp and bleached chemical thermo-mechanical pulp refer to the thermo-mechanical pulp adding a small amount of chemical agent modification.
The paper pulp of this body paper obtained makes paper pulp be beneficial to dehydration through defibrination process.The degree Schopper-Riegler of this paper pulp is 23-36 ° of SR (beating degree weighs the index of deckering complexity), and being scaled Canada's making beating freedom is 350-550ml.
Also be added with the dry strength agent having and increase dehydration effect in the paper pulp of this body paper obtained, this dry strength agent can be poly-Propionamides, policapram class, polyethyleneimine: amine or modified starch series.
Also can be added with conventional papermaking in the paper pulp of this body paper obtained and use filler, the addition of filler is 70-500 kg/tonne of paper.Filler specifically can be calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide, filler level china clay etc.
Other appropriate chemical assistants also can be added, to ensure the physical index of body paper in the paper pulp of this body paper obtained.Addition as internal sizing agent alkyl ketene dimer (AKD) is 0-20 kg/tonne of paper, and the addition of alkenyl succinic anhydride (ASA) is 0-2.0 kg/tonne of paper, and other retain auxiliary agent and starch based reinforcing agent adds by common consumption.
Wood-free paper of the present invention is by adjusting kind and the proportioning of raw paper pulp fiber, add the dry strength agent having and increase dehydration effect in the slurry simultaneously, in addition to slurry defibrination adjustment beating degree, effectively improve the dehydrating function of slurry, thus the wood-free paper of obtained high grammes per square metre of manufacturing paper with pulp, grammes per square metre can reach 120-400gsm, relative to the wood-free paper of current conventional grammes per square metre, the paper scope of application improves far away, and described wood-free paper is one-time formed single layer structure, the inter-layer bonding force that the paper avoiding sandwich construction causes is low, easy layering, the appearance of feel and the problem such as printing performance is not good enough.
Below by embodiment, the present invention is specifically described.
Embodiment 1
Slurrying: get the leaf wood bleach chemical pulp (bleached chemical staple fibre) that mass percentage is 70%, mass percentage is the needlebush bleach chemical pulp (bleached chemical long fiber) of 10%, and mass percentage is the high yield pulp mixing of 20%; Slurry is obtained through loose slurry, clean slurry, defibrination; Then dry strength agent, filler and other chemical assistants is added in slurry, wherein dry strength agent consumption is 10 kgs/tonne of paper, and filling material grinding calcium carbonate consumption is 200 kgs/tonne of paper, and AKD consumption is 10 kgs/tonne of paper, ASA consumption is 0.5 kg/tonne of paper, and other function additives add by demand consumption.
Top sizing: top sizing adopts maize oxidized starch, and the coating weight of top sizing is 8g/m
2.
The grammes per square metre of the wood-free paper obtained by the present embodiment is 150gsm.
Embodiment 2
Slurrying: get the leaf wood bleach chemical pulp (bleached chemical staple fibre) that mass percentage is 80%, mass percentage is the needlebush bleach chemical pulp (bleached chemical long fiber) of 10%, and mass percentage is the high yield pulp mixing of 10%; Slurry is obtained through loose slurry, clean slurry, defibrination; Then dry strength agent, filler and other chemical assistants is added in slurry, wherein dry strength agent consumption is 15 kgs/tonne of paper, and filler winnofil consumption is 260 kgs/tonne of paper, and AKD consumption is 8.5 kgs/tonne of paper, ASA consumption is 0.8 kg/tonne of paper, and other function additives add by demand consumption.
Top sizing: top sizing adopts enzymatic conversion cassava ative starch, and the coating weight of top sizing is 8g/m
2.
The grammes per square metre of the wood-free paper obtained by the present embodiment is 260gsm.
Embodiment 3
Slurrying: get the leaf wood bleach chemical pulp (bleached chemical staple fibre) that mass percentage is 75%, mass percentage is the needlebush bleach chemical pulp (bleached chemical long fiber) of 20%, and mass percentage is the high yield pulp mixing of 5%; Slurry is obtained through loose slurry, clean slurry, defibrination; Then dry strength agent, filler and other chemical assistants is added in slurry, wherein dry strength agent consumption is 30 kgs/tonne of paper, and filler winnofil consumption is 280 kgs/tonne of paper, and AKD consumption is 10 kgs/tonne of paper, ASA consumption is 1.0 kgs/tonne of paper, and other function additives add by demand consumption.
Top sizing: top sizing adopts maize oxidized starch, and the coating weight of top sizing is 10g/m
2.
The grammes per square metre of the wood-free paper obtained by the present embodiment is 350gsm.
Embodiment 4
Slurrying: get the leaf wood bleach chemical pulp (bleached chemical staple fibre) that mass percentage is 70%, mass percentage is the needlebush bleach chemical pulp (bleached chemical long fiber) of 25%, and mass percentage is the high yield pulp mixing of 5%; Slurry is obtained through loose slurry, clean slurry, defibrination; Then dry strength agent, filler and other chemical assistants is added in slurry, wherein dry strength agent consumption is 40 kgs/tonne of paper, and filler winnofil consumption is 300 kgs/tonne of paper, and AKD consumption is 10 kgs/tonne of paper, ASA consumption is 1.1 kgs/tonne of paper, and other function additives add by demand consumption.
Top sizing: top sizing adopts maize oxidized starch, and the coating weight of top sizing is 10g/m
2.
The grammes per square metre of the wood-free paper obtained by the present embodiment is 400gsm.
In addition, those skilled in the art also can make various amendments in other form and details, interpolation and replacement in the claims in the present invention scope of disclosure and spirit.Certainly, the changes such as these various amendments made according to the present invention's spirit, interpolation and replacement, all should be included within the present invention's scope required for protection.
Claims (7)
1. a wood-free paper, it table glue-line comprising body paper and be formed at body paper surface, it is characterized in that: the paper pulp of this body paper obtained adopts the mixing slurry of bleached chemical staple fibre, bleached chemical long fiber and high yield pulp, wherein the mass percentage of bleached chemical staple fibre is 50%-80%, the long stapled mass percentage of bleached chemical is 2-25%, and the mass percentage of high yield pulp is 5-30%; Also be added with the dry strength agent having and increase dehydration effect in this paper pulp, this dry strength agent is poly-Propionamides, policapram class, polyethyleneimine: amine or modified starch series; This paper pulp is through defibrination process, and its degree Schopper-Riegler is 23-36 ° of SR, and the grammes per square metre of this wood-free paper is 120-400gsm.
2. wood-free paper as claimed in claim 1, is characterized in that: the bulk of this wood-free paper is 1.0-2.0cm
3/ g.
3. wood-free paper as claimed in claim 1, it is characterized in that: in the paper pulp of this body paper obtained, be added with filler, the addition of filler is 70-500 kg/tonne of paper, and filler is one or more in calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide, filler level china clay.
4. wood-free paper as claimed in claim 1, it is characterized in that: the paper pulp of this body paper obtained is also added with internal sizing agent alkyl ketene dimer and alkenyl succinic anhydride, wherein the addition of alkyl ketene dimer is 0-20 kg/tonne of paper, and the addition of alkenyl succinic anhydride is 0-2.0 kg/tonne of paper.
5. wood-free paper as claimed in claim 1, is characterized in that: the paper pulp of this body paper obtained is also added with and retains auxiliary agent and starch based reinforcing agent.
6. wood-free paper as claimed in claim 1, is characterized in that: this table glue-line is coated body paper dry tack free by size-press starch and obtained.
7. wood-free paper as claimed in claim 6, is characterized in that: this size-press starch is enzyme starch or oxidized starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210162925.7A CN102677533B (en) | 2012-05-24 | 2012-05-24 | Two-side offset paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210162925.7A CN102677533B (en) | 2012-05-24 | 2012-05-24 | Two-side offset paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102677533A CN102677533A (en) | 2012-09-19 |
| CN102677533B true CN102677533B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210162925.7A Active CN102677533B (en) | 2012-05-24 | 2012-05-24 | Two-side offset paper |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397560A (en) * | 2013-07-29 | 2013-11-20 | 金华盛纸业（苏州工业园区）有限公司 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
| CN105088857A (en) * | 2015-08-18 | 2015-11-25 | 浙江华川实业集团有限公司 | High-quality paper and preparation method thereof |
| CN111206451A (en) * | 2018-11-22 | 2020-05-29 | 金华盛纸业（苏州工业园区）有限公司 | Pulping method of papermaking pulp and pulping auxiliary preparation |
| CN111021126B (en) * | 2019-12-27 | 2022-06-07 | 民丰特种纸股份有限公司 | Low-quantitative release base paper and preparation method thereof |
| CN113981739B (en) * | 2021-11-12 | 2023-01-20 | 亚太森博(广东)纸业有限公司 | Low-whiteness double-sided offset paper preparation process, production method of paper and low-whiteness double-sided offset paper |
| CN116145465A (en) * | 2022-12-13 | 2023-05-23 | 金东纸业（江苏）股份有限公司 | Double-adhesive paper and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703555A (en) * | 2002-09-13 | 2005-11-30 | 国际纸业公司 | Paper with improved stiffness and bulk and method for making same |
| CN102383338A (en) * | 2011-09-30 | 2012-03-21 | 金华盛纸业（苏州工业园区）有限公司 | Surface sizing composition and application thereof |
-
2012
- 2012-05-24 CN CN201210162925.7A patent/CN102677533B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1703555A (en) * | 2002-09-13 | 2005-11-30 | 国际纸业公司 | Paper with improved stiffness and bulk and method for making same |
| CN102383338A (en) * | 2011-09-30 | 2012-03-21 | 金华盛纸业（苏州工业园区）有限公司 | Surface sizing composition and application thereof |
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| CN102677533A (en) | 2012-09-19 |
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Effective date of registration: 20220630 Address after: 212132, No. 8 Tung Hing East Road, Dagang, Jiangsu, Zhenjiang Patentee after: Goldeast Paper (Jiangsu) Co.,Ltd. Address before: 215126 No.2 Jinsheng Road, Shengpu Town, Suzhou Industrial Park, Suzhou City, Jiangsu Province Patentee before: GOLD HUASHENG PAPER (SUZHOU INDUSTRIAL PARK) Co.,Ltd. |