CN102373649A - Paper production process and its product - Google Patents
Paper production process and its product Download PDFInfo
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- CN102373649A CN102373649A CN2010102608121A CN201010260812A CN102373649A CN 102373649 A CN102373649 A CN 102373649A CN 2010102608121 A CN2010102608121 A CN 2010102608121A CN 201010260812 A CN201010260812 A CN 201010260812A CN 102373649 A CN102373649 A CN 102373649A
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Abstract
The invention discloses a paper production process and its product. The production process provided by the invention mainly comprises a refining step, a slurry forming step, a paper making step, a drying step, a glue applying step and a finishing processing step. Before paper making of a slurry, carboxymethyl hydroxypropyl cellulose (CMHPC) is added into the slurry, wherein carboxymethyl hydroxypropyl cellulose (CMHPC) accounts for 0.01-3.0wt% of the dry weight of paper pulp. A few CMHPC is added into finished paper obtained by the above technology. As CMHPC is an auxiliary agent and has properties similar to CMC, and hydroxypropyl group is introduced into the chemical auxiliary agent, CMHPC comprises carboxymethyl and hydroxypropyl. Nonionic polar group is introduced into a carboxymethyl cellulose molecular chain, thus maintaining original properties of CMC and simultaneously further promoting fiber dispersion to improve drainage and retention and raise paper strength.
Description
Technical field
The present invention relates to production technology of a kind of paper and products thereof, relate in particular to a kind of production technology that is used to improve slurry system retention and drainage effect and paper strength performance and products thereof.
Background technology
The production of paper is the process of a complicacy; Improve strength of paper, improve formation of sheet, improve fiber retention, often auxiliary agent obtains through in paper pulp, adding to improve numerous characteristics such as de-watering of slurries; But, how could assurance obtain a plurality of superperformances and guarantee that simultaneously production run efficient is normally moved, improved to ordinary production is one of key that can the research of novel papermaking auxiliary agent successful because the interpolation of auxiliary agent tends to cause when obtaining performance boost and produce the actual contradiction that produces.
In present paper technology, the interior keys that CMC (carboxymethyl cellulose) can improve fiber is made a concerted effort through in slurry, adding, uniformly dispersing fibre to be reaching better moulding, thereby improves the physical strength of papery; CMC can also will fully scatter with filler particles and the fiber fines that its compatibility uses as a kind of dispersant, makes whole slurry form the system of a stable uniform.But this CMC additive remains further to be improved to the retention aid and filtering aid characteristic of paper pulp, and the paper strength of producing is lower.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides production technology of a kind of paper and products thereof, this technology and not only kept the original each item characteristic of CMC according to the paper of this explained hereafter, and further improved retention aid and filtering aid performance and the paper strength of auxiliary agent to slurry paper.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of production technology of paper; Mainly comprise the refining step, join slurry step, the step of manufacturing paper with pulp, drying steps, applying glue step, ornamenting procedure of processing; Before approach flow is manufactured paper with pulp; In slurry, add carboxymethyl hydroxypropyl cellulose (be called for short CMHPC), and the mass ratio that this carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) accounts for the paper pulp oven-dry weight is 0.01～3.0%.
As further improvement of the present invention, before approach flow is manufactured paper with pulp, add carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) before or after add wet strength agent, and mix with carboxymethyl hydroxypropyl cellulose (abbreviation CMHPC).
As further improvement of the present invention, said wet strength agent is at least one of Lauxite, melamine formaldehyde resin, polyamide epoxy polyamine chloropropane resin, polyamide epichlorohydrin resin, polycarboxylic acids, shitosan, dialdehyde starch, glyoxal one acrylamide grafted copolymer and polymine.The mass ratio that the addition of said wet strength agent accounts for the paper pulp oven-dry weight is 0.01%～5.0%
The present invention also provides paper a kind of as that above-mentioned method is made in addition, and the file of being produced by this paper.
The invention has the beneficial effects as follows: in the production process of paper; When slurries being joined slurry, add carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) as additive; Because this CMHPC is the chemical assistant of a kind of similar CMC; This auxiliary agent is compared with CMC and has been introduced the hydroxypropyl group, makes carboxymethyl hydroxypropyl cellulose include carboxymethyl and hydroxypropyl.Through on the carboxymethyl cellulose strand, introducing the nonionic polar group, when keeping the original each item character of CMC, reach further promotion cellulose and disperse, thereby improve retention aid and filtering aid and the purpose that improves paper strength.
The specific embodiment
The production technology of paper according to the invention mainly may further comprise the steps:
1. slurry is carried out refining with jordan, obtain slurries.Wherein, slurry is one or more the mixing in string (like cotton fiber, xylon, grass fiber, flax fibre, hide fiber), animal fiber, the chemical fibre.
2. add chemical assistant, filler, auxiliary material in the slurries behind refining and join slurry, obtain paper pulp.Wherein, Contain carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) in the chemical assistant; Substitution value DS >=0.9, substitution value MS >=0.10, the viscosity >=1000mPa.s of this carboxymethyl hydroxypropyl cellulose (be called for short CMHPC), and the mass ratio that this carboxymethyl hydroxypropyl cellulose (being called for short CMHPC) accounts for the paper pulp oven-dry weight is 0.01～2%; Filler is titanium white powder, kaolin or analog; Auxiliary material is anion catching agent, antifoaming agent, antiseptic or analog.
CMHPC is the auxiliary agent of the similar CMC of a kind of character, and this chemical assistant mainly through introducing the hydroxypropyl group, makes carboxymethyl hydroxypropyl cellulose (CMHPC) include carboxymethyl and hydroxypropyl.Thereby reach the purpose that further promotion fiber dispersion is improved retention aid and filtering aid and raising paper strength through on the carboxymethyl cellulose strand, introducing the nonionic polar group.
3. deliver to paper machine and manufacture paper with pulp joining the paper pulp that obtains behind the slurry.
4. the l Water Paper that will obtain after will manufacturing paper with pulp carries out drying, is tentatively become paper.
5. above-mentioned preliminary one-tenth paper is carried out top sizing.
6. the preliminary one-tenth paper behind the top sizing is carried out drying once more, finally become paper.
Embodiment 1:
Behind the refining process; Add CMHPC after earlier in stock tank, adding titanium white powder, preservative agent, control CMHPC is 0.01% to becoming paper major ingredient fiber by its shared mass ratio, before delivering to the paper machine wet end, adds the wet strength agent melamine formaldehyde resin; The control melamine formaldehyde resin is 0.5% to becoming paper major ingredient fiber by its shared mass ratio; After evenly mixing, slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, carry out top sizing again, used sizing material is PVA; Again the preliminary one-tenth paper behind the top sizing is carried out drying once more, finally become paper.
Embodiment 2:
Behind the refining process,, add kaolin and antifoaming agent in tankman's preface through tankman's preface step; After evenly mixing, add wet strength agent polyamide epoxy polyamine chloropropane resin earlier, and control polyamide epoxy polyamine chloropropane resin is 1.0% to becoming paper major ingredient fiber by its shared mass ratio at the paper machine wet end; Add CMHPC then, control CMHPC is 0.5% to becoming paper major ingredient fiber by its shared mass ratio, after mixing; Slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, carry out top sizing again, used sizing material is AKD; Again the preliminary one-tenth paper behind the top sizing is carried out drying once more, finally become paper.
Embodiment 3:
Behind the refining process; Through tankman's preface step, add calcium carbonate, anion catching agent and preservative agent in tankman's preface, the conveying slurry Guan Zhongxian before delivering to the paper machine wet end adds CMHPC; Control CMHPC is 1.5% to becoming paper major ingredient fiber by its shared mass ratio; Add wet strength agent polyamide epichlorohydrin resin then, control polyamide epichlorohydrin resin is 2.0% to becoming paper major ingredient fiber by its shared mass ratio, after evenly mixing; Slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, and dry preliminary one-tenth paper is handled through further top sizing, is fabricated to final one-tenth paper through super-dry again.
Embodiment 4:
Behind the refining process; Add CMHPC in the slurry pipe of the conveying slurry behind refining, control CMHPC is 2.0% to becoming paper major ingredient fiber by its shared mass ratio, through tankman's preface step; Add talcum powder, dyestuff and preservative agent in tankman's preface; Through tankman preface mixed in step evenly after, before delivering to the paper machine wet end, add the wet strength agent polycarboxylic acids, and the control polycarboxylic acids to become paper major ingredient fiber by its shared mass ratio be 2.5% fully mix after; Slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, and dry preliminary one-tenth paper is handled through further top sizing, is fabricated to final one-tenth paper through super-dry again.
Embodiment 5:
Behind the refining process,, add filler, auxiliary material in tankman's preface through tankman's preface step; In header box, add earlier shitosan, and the control shitosan is 3.0% to becoming paper major ingredient fiber by its shared mass ratio, adds CMHPC then; Control CMHPC is 2.5% to becoming paper major ingredient fiber by its shared mass ratio; After mixing, slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, and dry preliminary one-tenth paper is handled through further top sizing, is fabricated to final one-tenth paper through super-dry again.
Embodiment 6:
Behind the refining process; Add CMHPC after earlier in stock tank, adding titanium white powder, preservative agent; Control CMHPC is 3.0% to becoming paper major ingredient fiber by its shared mass ratio, before delivering to the paper machine wet end, adds the wet strength agent dialdehyde starch, and the control dialdehyde starch to become paper major ingredient fiber by its shared mass ratio be 4.0% evenly mix after; Slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, carry out top sizing again, used sizing material is PVA; Again the preliminary one-tenth paper behind the top sizing is carried out drying once more, finally become paper.
Embodiment 7:
Behind the refining process,, add filler, auxiliary material in tankman's preface through tankman's preface step; Before neat and well spaced jordan, add CMHPC in the conveyance conduit, control CMHPC is 1.8% to becoming paper major ingredient fiber by its shared mass ratio, and the back adds wet strength agent glyoxal one acrylamide grafted copolymer; And control glyoxal one acrylamide grafted copolymer is 4.5% to becoming paper major ingredient fiber by its shared mass ratio; After mixing, slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, and dry preliminary one-tenth paper is handled through further top sizing, is fabricated to final one-tenth paper through super-dry again.
Embodiment 8:
Behind the refining process,, add filler, auxiliary material in tankman's preface through tankman's preface step; Behind neat and well spaced jordan, add earlier the wet strength agent polymine in the conveyance conduit, and the control polymine is 5.0% to becoming paper major ingredient fiber by its shared mass ratio, adds CMHPC then; Control CMHPC is 2.8% to becoming paper major ingredient fiber by its shared mass ratio; After mixing, slurry is transported to paper machine and manufactures paper with pulp, and manufactures l Water Paper; L Water Paper is carried out drying, and dry preliminary one-tenth paper is handled through further top sizing, is fabricated to final one-tenth paper through super-dry again.
Main component with the resulting one-tenth paper of above-mentioned technology comprises major ingredient fiber, CMHPC, other chemical assistant, filler, auxiliary material; Wherein, CMHPC is 0.01%～3.0% to becoming paper major ingredient fiber by its shared mass ratio; Wet strength agent is 0.01%～5% to becoming paper major ingredient fiber by its shared mass ratio, and other chemical assistant (like preservative agent), filler, auxiliary material all add wherein by an amount of.
The major ingredient fiber of said one-tenth paper is one or more the mixing in string (like cotton fiber, xylon, grass fiber, flax fibre, hide fiber), animal fiber, the chemical fibre.
Claims (7)
1. the production technology of a paper; Mainly comprise the refining step, join slurry step, the step of manufacturing paper with pulp, drying steps, applying glue step, ornamenting procedure of processing; It is characterized in that: before approach flow is manufactured paper with pulp; In slurry, add carboxymethyl hydroxypropyl cellulose, and the mass ratio that this carboxymethyl hydroxypropyl cellulose accounts for the paper pulp oven-dry weight is 0.01～3.0%.
2. the production technology of paper as claimed in claim 1 is characterized in that: before approach flow is manufactured paper with pulp, before adding carboxymethyl hydroxypropyl cellulose, add wet strength agent, and mix with carboxymethyl hydroxypropyl cellulose.
3. the production technology of paper as claimed in claim 1 is characterized in that: before approach flow is manufactured paper with pulp, after adding carboxymethyl hydroxypropyl cellulose, add wet strength agent, and mix with carboxymethyl hydroxypropyl cellulose.
4. like the production technology of claim 2 or 3 described paper, it is characterized in that: said wet strength agent is at least one of Lauxite, melamine formaldehyde resin, polyamide epoxy polyamine chloropropane resin, polyamide epichlorohydrin resin, polycarboxylic acids, shitosan, dialdehyde starch, glyoxal one acrylamide grafted copolymer and polymine.
5. the production technology of paper as claimed in claim 4, it is characterized in that: the mass ratio that the addition of said wet strength agent accounts for the paper pulp oven-dry weight is 0.01%～5.0%
6. the paper made of the method for claim 1.
7. file of producing by the described paper of claim 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260812.1A CN102373649B (en) | 2010-08-23 | 2010-08-23 | Production technology of paper and products thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010260812.1A CN102373649B (en) | 2010-08-23 | 2010-08-23 | Production technology of paper and products thereof |
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| CN102373649A true CN102373649A (en) | 2012-03-14 |
| CN102373649B CN102373649B (en) | 2016-11-16 |
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| CN201010260812.1A Active CN102373649B (en) | 2010-08-23 | 2010-08-23 | Production technology of paper and products thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215853A (en) * | 2013-03-29 | 2013-07-24 | 金红叶纸业集团有限公司 | Wet strength agent, paper production technology and paper |
| CN103882773A (en) * | 2014-02-25 | 2014-06-25 | 苏州恒康新材料有限公司 | Chitosan wet strength agent and preparation method thereof |
| CN103981758A (en) * | 2014-04-21 | 2014-08-13 | 苏州恒康新材料有限公司 | Kraft paper wet strength agent and preparation method thereof |
| CN105544302A (en) * | 2015-12-03 | 2016-05-04 | 华南理工大学 | Preparation method and application of chitosan/hydroxypropyl cellulose composite antibacterial paper |
| CN110438836A (en) * | 2019-08-22 | 2019-11-12 | 浙江荣晟环保纸业股份有限公司 | Improve the paper technology of paper strength |
| CN111041887A (en) * | 2019-12-26 | 2020-04-21 | 同曦集团有限公司 | Antibacterial, mildew-proof and moth-proof rice paper raw pulp, prepared rice paper and preparation method |
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| CN1611674A (en) * | 2003-10-30 | 2005-05-04 | 中国印钞造币总公司 | Anticounterfeit paper containing sheet material and manufacturing method thereof |
| CN1748059A (en) * | 2003-03-13 | 2006-03-15 | 王子制纸株式会社 | Production of paper |
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| CN1611674A (en) * | 2003-10-30 | 2005-05-04 | 中国印钞造币总公司 | Anticounterfeit paper containing sheet material and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103215853A (en) * | 2013-03-29 | 2013-07-24 | 金红叶纸业集团有限公司 | Wet strength agent, paper production technology and paper |
| CN103882773A (en) * | 2014-02-25 | 2014-06-25 | 苏州恒康新材料有限公司 | Chitosan wet strength agent and preparation method thereof |
| CN103882773B (en) * | 2014-02-25 | 2016-04-20 | 宁夏鸿裕机械科技有限公司 | A kind of shitosan wet strength agent and preparation method thereof |
| CN103981758A (en) * | 2014-04-21 | 2014-08-13 | 苏州恒康新材料有限公司 | Kraft paper wet strength agent and preparation method thereof |
| CN105544302A (en) * | 2015-12-03 | 2016-05-04 | 华南理工大学 | Preparation method and application of chitosan/hydroxypropyl cellulose composite antibacterial paper |
| CN110438836A (en) * | 2019-08-22 | 2019-11-12 | 浙江荣晟环保纸业股份有限公司 | Improve the paper technology of paper strength |
| CN111041887A (en) * | 2019-12-26 | 2020-04-21 | 同曦集团有限公司 | Antibacterial, mildew-proof and moth-proof rice paper raw pulp, prepared rice paper and preparation method |
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| CN102373649B (en) | 2016-11-16 |
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Address after: Kunshan City, Jiangsu province 215300 Zhenchuan Road No. 1188 Patentee after: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee after: China Banknote Printing and Minting Group Co.,Ltd. Address before: Kunshan City, Jiangsu province 215300 Zhenchuan Road No. 1188 Patentee before: KUNSHAN BANKNOTE PAPER Co.,Ltd. Patentee before: CHINA BANKNOTE PRINTING AND MINTING Corp. |
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