CN105603801A - Production process for producing craft paper from old paper stock - Google Patents
Production process for producing craft paper from old paper stock Download PDFInfo
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- CN105603801A CN105603801A CN201610024231.5A CN201610024231A CN105603801A CN 105603801 A CN105603801 A CN 105603801A CN 201610024231 A CN201610024231 A CN 201610024231A CN 105603801 A CN105603801 A CN 105603801A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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Abstract
The invention provides a production process for producing craft paper from old paper stock. The production process is characterized by comprising the steps of material selection, material separation, pulping, papermaking, dehydration, prebaking drying, sizing and postbaking drying. Raw materials for selection include domestic waste paper, imported American waste paper and raw wood pulp. The selected raw materials are screened respectively and then subjected to surface layer pulp making, core layer pulp making and bottom layer pulp making; surface layer pulp, core layer pulp and bottom layer pulp are conveyed into a triply overlaying net from respective pulp flowing boxes for net forming so as to make the craft paper, and the craft paper is formed by sequentially stacking a surface layer, a core layer and a bottom layer; next, dehydration, drying, sizing and postbaking drying are performed, and finally the craft paper is made by means of rolling, rerolling and packing. The process is convenient to operate and suitable for large-scale production of the craft paper; moreover, a polyamide macromolecular emulsion and montmorillonite mixture is added into the bottom layer pulp to reinforce and modify the bottom layer, so that the strength and toughness of the craft paper are guaranteed.
Description
Technical field
The present invention relates to field, relate generally to a kind of production technology of being produced craft paper by old paper stock.
Background technology
Along with the raising of people's living standard, the production and consumption total amount increase year after year of paper and cardboard, resourceEnvironment is the maximum bottleneck problem of restriction Paper Industry Development, and the waste paper secondary stock that is otherwise known as is capable of circulationBe used in and produce paper and cardboard, regenerated papermaking belongs to typical recycling economy and low-carbon economy field, according to estimatingCalculate, produce 1 ton of paper and cardboard with waste paper, can save 2～5m timber, 200～800kg marks coal, 20～100m3Clear water, 200～400kg industrial chemicals; Can reduce the generation of waste water and gas and waste residue simultaneously; Waste paper is madePaper can reduce the felling of forest, directly reaches the effect of low-carbon (LC), and regenerated papermaking can be reduced investment outlay, and reduces rawProduce cost.
The raw material of paper is mainly the strings such as timber, grass, reed, bamboo, and waste paper can as importantRegenerated resources, along with the enhancing of people's environmental consciousness and the deflation of social resources, waste paper recycling has been subject toUnprecedented attention, the various waste paper regenerated technology of utilizing emerge in an endless stream. Wherein utilize waste paper to produce high-qualityThe life production paper using of amount is the developing direction of waste paper utilization technology always. The recycling of waste paper is to solvePaper industry faces that there is lack of raw materials, the effective way of energy shortage and the three large problems such as seriously polluted.Waste paper mainly contains three classes, (1) waste paper at present: domestic post consumer printing paper is through the textbook of slight applying glue, magazine,Require not containing forbidding thing, dud is no more than 0.25%. (2) import books and periodicals waste paper is 37#U.S. useless, through coatingOutdated magazine, catalogue and similar printed matter, allow to contain a small amount of uncoated newspaper, foreign material must notExceed 1%, defective waste paper total amount must not exceed 3%. (3) Mixed Office WasteMOW is 31#U.S. gives up and is not subject toThe useless assorted paper of office of tide, is mainly the assorted paper of white and colored wood-free, containing without bleachingFiber. Allowed a small amount of woody useless computer paper and facsimile transmission paper, foreign material must not exceed 2%, defectiveWaste paper total amount must not exceed 5%.
Produce in the process of high-quality paper with slurry at waste paper, waste paper is carried out necessarily or taken off fullyIt is the key link in waste paper pulp-making process that China ink is processed. Because various waste paper more or less all can be through printingProcess, especially old and useless newspaper, the waste paper that the printing of the processes such as post consumer printing paper is contained ink, because of in slurryingInk in process is difficult for removing, and is unfavorable for paper strength and optical property and contain the more paper pulp of inkImprovement or lifting, so in pulping process, need to carry out necessary deinking processing, through deinking processingAfter secondary stock quality and the optical property made will be greatly improved, its secondary stock just can be used as high-qualityRaw material is copied in joining of paper. But in deinking process, deinking agent is critical product, good is de-China ink agent can reduce energy consumption and carry high product yield and class, energy-saving and cost-reducing for producing; Waste paper simultaneouslyDeinking agent itself is nontoxic, can natural degradation, and environment friendly is obvious.
Although China's waste paper utilization rate is up to 49%, the waste paper rate of recovery is lower than 30%, China's paper grade (stock)The import dependency degree of wastepaper as raw material rises year by year, and the rate of recovery of domestic waste paper is not but improved, and reclaimsWaste paper be also processed in a large number the low-grade products such as cardboard toilet paper by small enterprise backward in technique, not do not send outWave the resource value of waste paper, even also bring serious secondary pollution.
Craft paper is a kind of true qualities paperboard of manufacturing with true qualities wood pulp and waste paper, mainly comprises Nine Dragons craft paperWith earthworm craft paper. Earthworm craft paper and Nine Dragons craft paper are all common package papers, are wrapping papersChief component. Craft paper is to carry out the packaging paperboard of interlayer combination with three layers, face, core, the end. At presentThe raw material of domestic craft paper paper, core, the corresponding three layers of base material in the end is wood pulp, secondary stock, secondary stock,Waste paper (taking waste paperboard as main) is passed through water conservancy by secondary stock preparation method in craft paper is producedThe operations such as broken, high dense removal of impurities, scalping, desanding, selected slagging-off, making beating, interpolation wet-end chemicals.The main import books and periodicals waste paper that adopts in the manufacture craft of craft paper, mainly gives up as main taking U.S.A at present, and ChineseWaste paper recovery and utilize seldom, make the cost of craft paper higher, simultaneously can not be to craft paperThe rate of recovery is lower, therefore needs to improve recovery and the utilization rate of domestic waste paper in craft paper production technology.
Summary of the invention
For the problems referred to above, the invention provides a kind of production technology of being produced craft paper by old paper stock.
The present invention solves the problems of the technologies described above adopted technical scheme:
A production technology of being produced craft paper by old paper stock, is characterized in that, comprises the following steps:1) select materials; 2) sub-material; 3) slurrying; 4) manufacture paper with pulp; 5) dehydration; 6) front baking is dry; 7) applying glue;8) post-drying is dry;
In selecting materials in described step 1, described in the raw material of selecting materials comprise domestic waste paper, the U.S. waste paper of import,Former wood pulp; Described domestic waste paper main source picks up from textbook, impurity and the books and periodicals etc. through slight applying glue;The U.S. waste paper of described import adopts 37#U.S. waste paper; Described log adopts needlebush and leaf wood;
In described step 2, in sub-material, will in the raw material of choosing in step 1, carry out respectively sub-sieve,Metallic article in raw material, non-paper product are rejected;
In described step 3, slurrying comprises surface layer slurry step processed, coremaking layer slurry stage and base pastes processedStep; First by carrying out respectively the raw material of sub-sieve in step 2, carry out respectively slurrying; Each raw material dividesNot dropping into pulper used is to pulverize in vertical continuous hydrabrusher, raw material is dissociated, simultaneously by stateProduce the U.S. waste paper of waste paper and import and with deinking, the paper scrap of pulverizing is carried out to deinking processing respectively, the rear wood of also controllingThe concentration of pulp fibres raw material is 5.0～6.0%, obtains respectively domestic waste paper slurry, import 37#U.S. secondary stock, pinLeaf wood pulp, hardwood pulp; Wherein said surface layer slurry step is by quality by softwood pulp and hardwood pulpCarry out proportioning than 1:1, the processing of further pulling an oar, is controlled at 35-40 ° of SR to beating degree, makes faceLayer slurry; Described coremaking layer slurry stage be by domestic waste paper slurry and softwood pulp in mass ratio 9:1 carry outMixing match, further pulls an oar, and is controlled at 25-30 ° of SR to beating degree, obtains center stock; InstituteStating base pastes step processed is by 37#U.S. secondary stock and hardwood pulp in mass ratio 19:1 carry out mixing match,Further pull an oar, be controlled at 30-35 ° of SR to beating degree, add polyamide high at base pastes simultaneouslyMolecule emulsion and imvite mixture strengthen modification, and addition is material quantity 0.5～1%, on earthLayer slurry;
Manufacturing paper with pulp in described step 4 is from stream separately by surface layer slurry, center stock and base pastesSlurry case is sent into the wet end moulding of triple-lap net and is made craft paper, and this craft paper by surface layer, sandwich layer and bottom successivelySuperimposed forming;
In dehydration in described step 5, comprise two sections of press dewaterings, one presses as blind drilled press, and two pressures areShoe press, it is 50% that paper web is dewatered to mass dryness fraction;
Front baking in described step 6 is dry, will enter front drying section through twice press dewatering dry, drying cylinderTemperature is elevated to 110 degree gradually from 60 degree, and after 30 seconds dry, paper web mass dryness fraction reaches 90%;
Applying glue in described step 7, executes positive glue application layer at the upper surface of surface layer, in the following table of bottomFace is executed back side glue application layer, and after applying glue, mass dryness fraction drops to 70%;
Post-drying in described step 8 is dry, and dryer temperature is elevated to 110 degree gradually from 60 degree, processAfter within 10 seconds, drying, paper web mass dryness fraction reaches 93%; Make craft paper finally by coil paper, rewinding and packing.
Further, it is as described below that the constituent of the deinking agent adopting is processed in the deinking in above-mentioned steps 3:
Dodecyl phenenyl sulfate 14～16%, potassium hydroxide 1～2%; Potassium silicate 3～4%; Bleeding agentOEP-7015～20%; Heptyl phenol polyethenoxy ether 22～25%; Surplus is water, is supplemented to 100%, logicalCross mix and blend and obtain deinking agent.
Further, in the craft paper making, the weight of the dry weight of surface layer, sandwich layer, bottom is 25～30g/m2、20～23g/m2、23～28g/m2。
The invention has the advantages that: a kind of production technology of being produced craft paper by old paper stock of the present invention, shouldTechnological operation is convenient, is applicable to large-scale production and manufactures craft paper, adopts domestic waste paper to reclaim profit simultaneouslyWith, fully recycle domestic waste paper, realize the recycling of waste paper, in base pastes, add simultaneouslyPolyamide macromolecule emulsion and imvite mixture, strengthen modification by bottom, adopts reclaimed waste paper,Ensure intensity and the toughness of craft paper simultaneously.
Detailed description of the invention
Below in conjunction with embodiment, technical scheme of the present invention is clearly and completely described, obviously,Described embodiment is the present invention's part embodiment, instead of whole embodiment. Based on the present inventionIn embodiment, those of ordinary skill in the art are not making the institute obtaining under creative work prerequisiteThere are other embodiment, all belong to the scope of protection of the invention.
Embodiment 1
A production technology of being produced craft paper by old paper stock, is characterized in that, comprises the following steps:1) select materials; 2) sub-material; 3) slurrying; 4) manufacture paper with pulp; 5) dehydration; 6) front baking is dry; 7) applying glue;8) post-drying is dry;
In selecting materials in described step 1, described in the raw material of selecting materials comprise domestic waste paper, the U.S. waste paper of import,Former wood pulp; Described domestic waste paper main source picks up from textbook, impurity and the books and periodicals etc. through slight applying glue;The U.S. waste paper of described import adopts 37#U.S. waste paper; Described log adopts needlebush and leaf wood;
In described step 2, in sub-material, will in the raw material of choosing in step 1, carry out respectively sub-sieve,Metallic article in raw material, non-paper product are rejected;
In described step 3, slurrying comprises surface layer slurry step processed, coremaking layer slurry stage and base pastes processedStep; First by carrying out respectively the raw material of sub-sieve in step 2, carry out respectively slurrying; Each raw material dividesNot dropping into pulper used is to pulverize in vertical continuous hydrabrusher, raw material is dissociated, simultaneously by stateProduce the U.S. waste paper of waste paper and import and with deinking, the paper scrap of pulverizing is carried out to deinking processing respectively, the rear wood of also controllingThe concentration of pulp fibres raw material is 5.5%, obtains respectively domestic waste paper slurry, import 37#U.S. secondary stock, needleWood pulp, hardwood pulp; Wherein said surface layer slurry step is by softwood pulp and hardwood pulp in mass ratio1:1 carries out proportioning, and the processing of further pulling an oar is controlled at 38 ° of SR to beating degree, makes surface layer slurryMaterial; Described coremaking layer slurry stage be by domestic waste paper slurry and softwood pulp in mass ratio 9:1 mixProportioning, further pulls an oar, and is controlled at 28 ° of SR to beating degree, obtains center stock; The described end processedLayer slurry stage is by 37#U.S. secondary stock and hardwood pulp in mass ratio 19:1 carry out mixing match, enter oneStep is pulled an oar, and is controlled at 33 ° of SR to beating degree, adds polyamide macromolecule latex at base pastes simultaneouslyLiquid and imvite mixture strengthen modification, and addition is material quantity 0.8%, obtain base pastes;
Manufacturing paper with pulp in described step 4 is from stream separately by surface layer slurry, center stock and base pastesSlurry case is sent into the wet end moulding of triple-lap net and is made craft paper, and this craft paper by surface layer, sandwich layer and bottom successivelySuperimposed forming;
In dehydration in described step 5, comprise two sections of press dewaterings, one presses as blind drilled press, and two pressures areShoe press, it is 50% that paper web is dewatered to mass dryness fraction;
Front baking in described step 6 is dry, will enter front drying section through twice press dewatering dry, drying cylinderTemperature is elevated to 110 degree gradually from 60 degree, and after 30 seconds dry, paper web mass dryness fraction reaches 90%;
Applying glue in described step 7, executes positive glue application layer at the upper surface of surface layer, in the following table of bottomFace is executed back side glue application layer, and after applying glue, mass dryness fraction drops to 70%;
Post-drying in described step 8 is dry, and dryer temperature is elevated to 110 degree gradually from 60 degree, processAfter within 10 seconds, drying, paper web mass dryness fraction reaches 93%; Make craft paper finally by coil paper, rewinding and packing.
Further, it is as described below that the constituent of the deinking agent adopting is processed in the deinking in above-mentioned steps 3:
Dodecyl phenenyl sulfate 15%, potassium hydroxide 1.5%; Potassium silicate 3.5%; Bleeding agent OEP-7018%; Heptyl phenol polyethenoxy ether 24%; Water 38%, is supplemented to 100%, is taken off by mix and blendChina ink agent.
Further, in the craft paper making, the weight of the dry weight of surface layer, sandwich layer, bottom is 28g/m2、22g/m2、25g/m2。
Finally it should be noted that: above each embodiment is only in order to technical scheme of the present invention to be described, but not rightIts restriction; Although the present invention is had been described in detail with reference to aforementioned each embodiment, this area commonTechnical staff is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified,Or some or all of technical characterictic is wherein equal to replacement; And these amendments or replacement, andDo not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (3)
1. a production technology of being produced craft paper by old paper stock, is characterized in that, comprises the following steps:1) select materials; 2) sub-material; 3) slurrying; 4) manufacture paper with pulp; 5) dehydration; 6) front baking is dry; 7) applying glue;8) post-drying is dry;
In selecting materials in described step 1, described in the raw material of selecting materials comprise domestic waste paper, the U.S. waste paper of import,Former wood pulp; Described domestic waste paper main source picks up from textbook, impurity and the books and periodicals etc. through slight applying glue;The U.S. waste paper of described import adopts 37#U.S. waste paper; Described log adopts needlebush and leaf wood;
In described step 2, in sub-material, will in the raw material of choosing in step 1, carry out respectively sub-sieve,Metallic article in raw material, non-paper product are rejected;
In described step 3, slurrying comprises surface layer slurry step processed, coremaking layer slurry stage and base pastes processedStep; First by carrying out respectively the raw material of sub-sieve in step 2, carry out respectively slurrying; Each raw material dividesNot dropping into pulper used is to pulverize in vertical continuous hydrabrusher, raw material is dissociated, simultaneously by stateProduce the U.S. waste paper of waste paper and import and with deinking, the paper scrap of pulverizing is carried out to deinking processing respectively, the rear wood of also controllingThe concentration of pulp fibres raw material is 5.0～6.0%, obtains respectively domestic waste paper slurry, import 37#U.S. secondary stock, pinLeaf wood pulp, hardwood pulp; Wherein said surface layer slurry step is by quality by softwood pulp and hardwood pulpCarry out proportioning than 1:1, the processing of further pulling an oar, is controlled at 35-40 ° of SR to beating degree, makes faceLayer slurry; Described coremaking layer slurry stage be by domestic waste paper slurry and softwood pulp in mass ratio 9:1 carry outMixing match, further pulls an oar, and is controlled at 25-30 ° of SR to beating degree, obtains center stock; InstituteStating base pastes step processed is by 37#U.S. secondary stock and hardwood pulp in mass ratio 19:1 carry out mixing match,Further pull an oar, be controlled at 30-35 ° of SR to beating degree, add polyamide high at base pastes simultaneouslyMolecule emulsion and imvite mixture strengthen modification, and addition is material quantity 0.5～1%, on earthLayer slurry;
Manufacturing paper with pulp in described step 4 is from stream separately by surface layer slurry, center stock and base pastesSlurry case is sent into the wet end moulding of triple-lap net and is made craft paper, and this craft paper by surface layer, sandwich layer and bottom successivelySuperimposed forming;
In dehydration in described step 5, comprise two sections of press dewaterings, one presses as blind drilled press, and two pressures areShoe press, it is 50% that paper web is dewatered to mass dryness fraction;
Front baking in described step 6 is dry, will enter front drying section through twice press dewatering dry, drying cylinderTemperature is elevated to 110 degree gradually from 60 degree, and after 30 seconds dry, paper web mass dryness fraction reaches 90%;
Applying glue in described step 7, executes positive glue application layer at the upper surface of surface layer, in the following table of bottomFace is executed back side glue application layer, and after applying glue, mass dryness fraction drops to 70%;
Post-drying in described step 8 is dry, and dryer temperature is elevated to 110 degree gradually from 60 degree, processAfter within 10 seconds, drying, paper web mass dryness fraction reaches 93%; Make craft paper finally by coil paper, rewinding and packing.
2. a kind ofly according to claim 1 produce the production technology of craft paper, its feature by old paper stockBe, it is as described below that the constituent of the deinking agent adopting is processed in the deinking in step 3:
Dodecyl phenenyl sulfate 14～16%, potassium hydroxide 1～2%; Potassium silicate 3～4%; Bleeding agentOEP-7015～20%; Heptyl phenol polyethenoxy ether 22～25%; Surplus is water, is supplemented to 100%, logicalCross mix and blend and obtain deinking agent.
3. produce the production technology of craft paper according to a kind of described in claim 1 or 2 by old paper stock, itsBe characterised in that, in the craft paper making, the weight of the dry weight of surface layer, sandwich layer, bottom is 25～30g/m2、20～23g/m2、23～28g/m2。
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758457A (en) * | 2016-12-20 | 2017-05-31 | 墨宝股份有限公司 | Novel energy-saving environment-friendly full-regeneration coated white cardboard and preparation method thereof |
| CN106894268A (en) * | 2017-01-04 | 2017-06-27 | 安徽山鹰纸业股份有限公司 | A kind of high-strength cow boxboard and preparation method thereof |
| CN107460785A (en) * | 2017-07-12 | 2017-12-12 | 浙江景兴纸业股份有限公司 | A kind of environmental protection liner paper and its production method |
| CN107604741A (en) * | 2017-09-27 | 2018-01-19 | 广州市咏润纸业科技有限公司 | A kind of method that environmentally friendly brown paper is prepared using old newsprint |
| CN109371732A (en) * | 2018-11-27 | 2019-02-22 | 中冶美利云产业投资股份有限公司 | A kind of production technology of high-grade dark paper jam |
| CN109629292A (en) * | 2019-01-04 | 2019-04-16 | 江苏理文造纸有限公司 | A kind of production technology for ultra-clean top grade liner board |
| CN109706777A (en) * | 2018-12-17 | 2019-05-03 | 浙江荣晟环保纸业股份有限公司 | A kind of technique promoting craft paper evenness |
| CN110273311A (en) * | 2019-05-21 | 2019-09-24 | 临沂利华纸业有限公司 | A kind of production method of Novel imitation craft paper |
| CN114481659A (en) * | 2022-01-05 | 2022-05-13 | 山东太阳宏河纸业有限公司 | High-strength craft paper and production process thereof |
| CN114960268A (en) * | 2022-06-16 | 2022-08-30 | 联盛纸业（龙海）有限公司 | High-grade craft paper and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106758457A (en) * | 2016-12-20 | 2017-05-31 | 墨宝股份有限公司 | Novel energy-saving environment-friendly full-regeneration coated white cardboard and preparation method thereof |
| CN106894268A (en) * | 2017-01-04 | 2017-06-27 | 安徽山鹰纸业股份有限公司 | A kind of high-strength cow boxboard and preparation method thereof |
| CN107460785A (en) * | 2017-07-12 | 2017-12-12 | 浙江景兴纸业股份有限公司 | A kind of environmental protection liner paper and its production method |
| CN107604741A (en) * | 2017-09-27 | 2018-01-19 | 广州市咏润纸业科技有限公司 | A kind of method that environmentally friendly brown paper is prepared using old newsprint |
| CN109371732A (en) * | 2018-11-27 | 2019-02-22 | 中冶美利云产业投资股份有限公司 | A kind of production technology of high-grade dark paper jam |
| CN109706777A (en) * | 2018-12-17 | 2019-05-03 | 浙江荣晟环保纸业股份有限公司 | A kind of technique promoting craft paper evenness |
| CN109629292A (en) * | 2019-01-04 | 2019-04-16 | 江苏理文造纸有限公司 | A kind of production technology for ultra-clean top grade liner board |
| CN110273311A (en) * | 2019-05-21 | 2019-09-24 | 临沂利华纸业有限公司 | A kind of production method of Novel imitation craft paper |
| CN114481659A (en) * | 2022-01-05 | 2022-05-13 | 山东太阳宏河纸业有限公司 | High-strength craft paper and production process thereof |
| CN114481659B (en) * | 2022-01-05 | 2024-03-15 | 山东太阳宏河纸业有限公司 | High-strength craft paper and production process thereof |
| CN114960268A (en) * | 2022-06-16 | 2022-08-30 | 联盛纸业（龙海）有限公司 | High-grade craft paper and preparation method thereof |
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