CN103397560A - Two-sided offset paper for paper bags and preparation method of two-sided offset paper - Google Patents
Two-sided offset paper for paper bags and preparation method of two-sided offset paper Download PDFInfo
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- CN103397560A CN103397560A CN2013103223702A CN201310322370A CN103397560A CN 103397560 A CN103397560 A CN 103397560A CN 2013103223702 A CN2013103223702 A CN 2013103223702A CN 201310322370 A CN201310322370 A CN 201310322370A CN 103397560 A CN103397560 A CN 103397560A
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Abstract
The invention provides a piece of two-sided offset paper for paper bags. The two-sided offset paper is prepared from raw materials including fiber pulp and chemical additives, wherein the fiber pulp comprises the following components in percentage by weight: 50-100 percent of broadleaf wood bleached chemical pulp, 0-50 percent of needlebush bleached chemical pulp and 0-30 percent of high-yield pulp, and the Schopper-Riegler degree is 23-36SR; the chemical additives include the following components in terms of kg/ton of paper: 70-500kg of packing and 8-20kg of an internal sizing agent. According to the two-sided offset paper provided by the invention, the matching and pulp grinding of fiber are adjusted by selecting the types of fibers in the production process, and the brooming degree of pulp grinding is improved; meanwhile, the pressure of calendaring at the rear stage is adjusted and is controlled to be 10-30kg/cm<2>, the surface properties of the paper are improved, and the strength is effectively improved; according to the novel two-sided offset paper for the paper bags, the folding endurance range is 100-500 times, and the pressure of a squeezing part of a paper machine is increased, so that the traction force of paper at the rear section is reduced, the calendaring degree of a curling part is reduced, the stiffness of the paper is improved, and finally the printing performance of terminal customers is improved.
Description
Technical field
The invention belongs to pulp technology for making paper, be specifically related to a kind of wood-free paper that is applicable to paper bag and preparation method thereof.
Background technology
Sack kraft paper is generally used chromo board, brown paper film at present, art paper is because there being coating, be not suitable for food, dress materials etc. are edible, and with the article that human body directly contacts, brown paper film class is not fine to printing effect, therefore, the two glue of novel paper bag that is applicable to all kinds of article packings to be developed is arranged, be conducive to environmental protection, the joint of the energy falls.
Prior art discloses multiple wood-free paper, a kind of wood-free paper is disclosed as China's application 201210162925.7, the table glue-line that it comprises body paper and is formed at the body paper surface, the paper pulp that makes this body paper adopts the mixing slurry of bleached chemical staple fibre, bleached chemical long fiber and high yield pulp, wherein the quality percentage composition of bleached chemical staple fibre is 50%-80%, the long stapled quality percentage composition of bleached chemical is 2-25%, and the quality percentage composition of high yield pulp is 5-30%; In this paper pulp, also be added with and have the dry strength agent that increases the dehydration effect; This paper pulp is processed through defibrination, 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, in slurry, add and have the dry strength agent that increases the dehydration effect simultaneously, in addition the slurry defibrination is adjusted to beating degree, effectively improved the dehydrating function of slurry, thereby improved the grammes per square metre of wood-free paper.
But above-mentioned wood-free paper does not relate to the demand to intensity, the wood-free paper that is applicable to paper bag of the present invention's invention, by management and control defibrination condition, slurry is carried out to preliminary treatment, can effectively promote the intensity of paper, make up the deficiency of common double glue in intensity, make paper bag type wood-free paper possess the advantage of present copper coin card/brown paper film class but have popularity.
Summary of the invention
The object of the present invention is to provide a kind of wood-free paper, with general two glue, compare, have more the advantage of intensity, printability.
For achieving the above object, the present invention adopts following technical scheme:
A kind of wood-free paper that is applicable to paper bag, described wood-free paper is prepared from by the raw material that comprises fibre stuff, chemical addition agent; Described fibre stuff counts by weight percentage, by the leaf wood bleach chemical pulp of 50-100%, and the needlebush bleach chemical pulp of 0-50%, the high yield pulp of 0-30% forms, and degree Schopper-Riegler is 23～36 ° of SR; Described fibre stuff is through preliminary treatment; Described chemical addition agent is pressed kg/ ton paper and is calculated, and comprises filler 70-500kg, internal sizing agent 8-2.0kg.
Wherein, described internal sizing agent comprises alkyl ketene dimer and/or alkenyl succinic anhydride, and the amount ratio of the two is 8:1-24:1.
Preferred described internal sizing agent is pressed kg/ ton paper and is calculated, by 8-12kg alkyl ketene dimer and 0.5-1kg alkenyl succinic anhydride.
Wherein, described leaf wood bleach chemical pulp seeds are white poplar, Eucalyptus, Acacia, maple etc., and needlebush bleach chemical pulp seeds are Southern Pine, north pine, dragon spruce, Oak Tree etc.
Further, preferred described fibre stuff counts by weight percentage, by the leaf wood bleach chemical pulp of 70-80%, and the needlebush bleach chemical pulp of 15-20%, the high yield pulp of 5-10% forms, and degree Schopper-Riegler is 23～36 ° of SR.
Most preferably, described fibre stuff counts by weight percentage, the leaf wood bleach chemical pulp by 75%, and 15% needlebush bleach chemical pulp, 10% high yield pulp forms.
Wood-free paper of the present invention, described filler are one or more in calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay, preferred calcium carbonate, titanium dioxide.Preferred filler is pressed kg/ ton paper and is calculated, and is 150-200kg.
In addition, wood-free paper of the present invention, can also look concrete condition and add other function additives by the demand consumption, as kept auxiliary agent, starch based reinforcing agent, the those skilled in the art that are defined as of the selection of concrete function auxiliary agent and consumption thereof grasp, and the present invention is not particularly limited this.
the preliminary treatment of fibre stuff of the present invention refers to and utilizes biology enzyme to process fibre stuff, wherein biology enzyme is selected from the fibre modification enzyme of domestic or import, described fibre modification enzyme is existing product, for example: commercially available or other the relevant similar products of Buckman company, the ergasia of this fibre modification enzyme is aspect two, namely reduce beating energy consumption and promote the fiber wire-dividing broom purification, those skilled in the art are according to the requirement that slurry is processed, select modification enzyme and/or the ratio combination of suitable fiber to use, concrete selecting grasped by those skilled in the art, the present invention is not particularly limited this.Biology enzyme of the present invention can effectively be optimized defibrination, promotes intensity, and then guarantees the wood-free paper quality.
Wood-free paper of the present invention, described wood-free paper surface sizing starch coating weight 5-10g/m
2.
Wood-free paper basis weight range of the present invention is 50～120gsm, and bulk is 1.0～2.0cm
3/ g; Preferred wood-free paper basis weight range is 80～100gsm, and bulk is 1.5～1.8cm
3/ g.
More specifically, fiber of the present invention adopts bleached chemical short fiber (seeds be white poplar, Eucalyptus, Acacia, maple etc. all can) 50%～100%, the long fine consumption of bleached chemical be 0～50%(Southern Pine, north pine, dragon spruce, Oak Tree etc. all can), degree Schopper-Riegler is that 23～36 ° of SR(Canada making beating freedoms are 350～550ml), high yield pulp 0-30%.Filler (all kinds fillers such as calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide, filler level china clay all can) addition is 70～500 kg/tonnes of paper, the addition of internal sizing agent is 8～20 kg/tonnes of paper, described internal sizing agent comprises alkyl ketene dimer and/or alkenyl succinic anhydride, when described internal sizing agent comprised alkyl ketene dimer and alkenyl succinic anhydride, the amount ratio of the two was 8:1-24:1.As alkyl ketene dimer (AKD) addition, be 8-12 kg/tonne of paper, 0.5-1.0 kg/tonne of paper of alkenyl succinic anhydride (ASA), keep auxiliary agent and starch based reinforcing agent and add by common consumption.
The second purpose of the present invention is to provide the preparation method of above-mentioned wood-free paper.
Wood-free paper of the present invention can adopt above-mentioned raw materials to prepare by the disclosed various traditional methods of prior art.Because scientific formulation of the present invention is reasonable, and slurry can significantly improve the performance of wood-free paper after preliminary treatment.Therefore those skilled in the art will envision that after the specific raw material of the present invention is prepared into to wood-free paper and must have desirable performance.But in order further to guarantee the wood-free paper quality, the present invention preferably adopts following technical scheme:
A kind of method for preparing above-mentioned wood-free paper, comprise the steps:
(1) slurrying
Take in proportion each fibre stuff, pass through loose slurry, clean slurry, defibrination or discongest, by preliminary treatment, make mixed slurry;
(2) add chemical addition agent
In mixed slurry, add filler and internal sizing agent, mix;
(3) top sizing
Starch coating weight 5-10g/m
2
(4) back segment press polish
Pressure is controlled at 10-30kg/cm
2.
Wherein, preferred described starch coating weight 8g/m
2, back segment press polish pressure is controlled at 25kg/cm
2.
The preliminary treatment of described slurry is specially: in the slurry tower of infusion slurry, add: fibre modification enzyme 20～50ppm(stoste), 30-60min completes the preliminary treatment to slurry, next carries out the subsequent treatment such as defibrination.
Adopt technique scheme, the invention solves common double glue intensity difference in the market, be not suitable for being applied in the technological deficiency on paper bag.The two glue of the novel paper bag of developing, folding strength is good, the Origuchi explosion is excellent, be more useful on paper bag, printing performance is again far away higher than the paper bag of other paper kind, brown paper film sack kraft paper for example, simultaneously, the environmental protection aspect is better than traditional copper board sack kraft paper, can meet the demand of society, be the contribution greatly to society largelyr.
The present invention, by aspect making technology, selecting the kind of fiber, adjusts proportioning and the defibrination of fiber, improves defibrination brooming, has adjusted simultaneously the pressure of back segment press polish, and pressure is controlled at 10～30kg/cm
2Improved paper surface character, effectively improved intensity, the folding strength scope of novel paper bag wood-free paper is 100～500 times, by improving press section of a paper machine pressure, reduce back segment Paper tractor power, curled portion attenuating press polish, improved the deflection of paper, finally improved the printing performance of terminal client.
The specific embodiment
Following examples are used for the present invention is described, but are not used for limiting the scope of the invention.If do not specialize, the conventional means that in embodiment, technological means used is well known to those skilled in the art, the raw materials used commercial goods that is.
Embodiment 1
The copy paper basic weight is 50gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 70%, and needlebush bleach chemical pulp consumption accounts for 20%, and high yield pulp 10%, degree Schopper-Riegler are 30 ° of SR.Through loose slurry, clean slurry, defibrination or discongest, add the fibre modification enzyme, to slurry 30ppm, processing time 45min, prepare slurry (1 ton).
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), consumption is 10 kg/tonnes of paper, 0.5 kg/tonne of paper of alkenyl succinic anhydride (ASA), 150 kg/tonnes of paper of filler, in the present embodiment, filler is winnofil or grinding calcium carbonate, and the starch based reinforcing agent is appropriate.Can understand for those skilled in the art in right amount herein.3, top sizing
Surface sizing starch coating weight 5g/m
2.
4. back segment press polish
Pressure is controlled at 25kg/cm
2.
The present embodiment gained wood-free paper performance: paper power is strong, and wherein folding is more than 200 times.
Embodiment 2
The copy paper basic weight is 80gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 75%, and needlebush bleach chemical pulp consumption accounts for 15%, and high yield pulp 10%, degree Schopper-Riegler are 28 ° of SR.Through loose slurry, clean slurry, defibrination or discongest, add the fibre modification enzyme, to slurry 40ppm, 30min, make slurry (1 ton).
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), and consumption is 9 kg/tonnes of paper, 0.5 kg/tonne of paper of alkenyl succinic anhydride (ASA), 170 kg/tonnes of paper of filler talcum powder.
3, top sizing
Surface sizing starch coating weight 8g/m
2.
4. back segment press polish
Pressure is controlled at 25kg/cm
2.
The present embodiment gained wood-free paper performance: folding is more than 200 times.
Embodiment 3
The copy paper basic weight is 100gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 80%, and needlebush bleach chemical pulp consumption accounts for 15%, high yield pulp 5%, through loose slurry, clean slurry, defibrination or discongest, add biology enzyme, to slurry 80ppm, processing time 60min, make slurry (1 ton).
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), and consumption is 10 kg/tonnes of paper, 0.8 kg/tonne of paper of alkenyl succinic anhydride (ASA), 200 kg/tonnes of paper of filler china clay.
3, top sizing
Surface sizing starch coating weight 10g/m
2.
4. back segment press polish
Pressure is controlled at 30kg/cm
2.
The present embodiment gained wood-free paper performance: folding is more than 150 times.
Embodiment 4
The copy paper basic weight is 120gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 50%, and needlebush bleach chemical pulp consumption accounts for 20%, and high yield pulp 30%, degree Schopper-Riegler are 36 ° of SR.Through loose slurry, clean slurry, defibrination or discongest, add the fibre modification enzyme, to slurry 40ppm, processing time 40min, prepare slurry (1 ton).
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), and consumption is 10 kg/tonnes of paper, 1 kg/tonne of paper of alkenyl succinic anhydride (ASA), and 300 kg/tonnes of paper of filler, in the present embodiment, filler is heavy mica or mineral fibres.
3, top sizing
Surface sizing starch coating weight 8g/m
2.
4. back segment press polish
Pressure is controlled at 25kg/cm
2.
The present embodiment gained wood-free paper performance: folding is more than 100 times.
Embodiment 5
The copy paper basic weight is 140gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 100%, through loose slurry, clean slurry, defibrination or discongest, adds the fibre modification enzyme, and to slurry 50ppm, processing time 50min, make slurry.
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), and consumption is 10 kg/tonnes of paper, 1.2 kg/tonnes of paper of alkenyl succinic anhydride (ASA), 400 kg/tonnes of paper of filler winnofil.
3, top sizing
Surface sizing starch coating weight 8g/m
2.
4. back segment press polish
Pressure is controlled at 30kg/cm
2.
The present embodiment gained wood-free paper performance: folding is more than 100 times.
Embodiment 6
The copy paper basic weight is 180gsm
1, slurrying
Adopt 100% bleach chemical pulp, the consumption of leaf wood bleach chemical pulp accounts for 80%, and needlebush bleach chemical pulp consumption accounts for 10%, and high yield pulp 10%, degree Schopper-Riegler are 23 ° of SR.Through loose slurry, clean slurry, defibrination or discongest, add the fibre modification enzyme, to slurry 50ppm, process 30min, make slurry (1 ton).
2, add chemicals
Wet end adds alkyl ketene dimer (AKD), and consumption is 18 kg/tonnes of paper, 2 kg/tonnes of paper of alkenyl succinic anhydride (ASA), 500 kg/tonnes of paper of filler winnofil.
3, top sizing
Surface sizing starch coating weight 8g/m
2.
4. back segment press polish
Pressure is controlled at 25kg/cm
2.
The present embodiment gained wood-free paper performance: folding is more than 100 times.
In operation actual, the folding meeting of high grammes per square metre paper is low.The general folding number of the disclosed wood-free paper of prior art, at 30-50 time, is starkly lower than the present invention.Hence one can see that, and the wood-free paper that adopts technical solution of the present invention to obtain has significantly improved the folding strength scope (up to 100～500 times) of wood-free paper, has improved simultaneously the deflection of paper, and has finally improved the printing performance of terminal client.This is the technique effect that prior art can't realize.
Although above the present invention is described in detail with a general description of the specific embodiments, on basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Therefore, these modifications or improvements, all belong to the scope of protection of present invention without departing from theon the basis of the spirit of the present invention.
Claims (10)
1. wood-free paper that is applicable to paper bag, it is characterized in that: described wood-free paper is prepared from by the raw material that comprises fibre stuff and chemical addition agent; Described fibre stuff counts by weight percentage, by the leaf wood bleach chemical pulp of 50-100%, and the needlebush bleach chemical pulp of 0-50%, the high yield pulp of 0-30% forms, and degree Schopper-Riegler is 23～36 ° of SR; Described fibre stuff is through preliminary treatment; Described chemical addition agent is pressed kg/ ton paper and is calculated, and comprises filler 70-500kg, internal sizing agent 8-20kg.
2. wood-free paper according to claim 1, it is characterized in that: described internal sizing agent comprises alkyl ketene dimer and/or alkenyl succinic anhydride, when described internal sizing agent comprised alkyl ketene dimer and alkenyl succinic anhydride, the amount ratio of the two was 8:1-24:1.
3. wood-free paper according to claim 2 is characterized in that: described internal sizing agent is pressed kg/ ton paper and is calculated, by 8-12kg alkyl ketene dimer and 0.5-1kg alkenyl succinic anhydride.
4. wood-free paper according to claim 1, it is characterized in that: described fibre stuff counts by weight percentage, by the leaf wood bleach chemical pulp of 70-80%, and the needlebush bleach chemical pulp of 15-20%, the high yield pulp of 5-10% forms, and degree Schopper-Riegler is 28～30 ° of SR.
5. the described wood-free paper of according to claim 1-4 any one, it is characterized in that: described filler is one or more in calcium carbonate, talcum powder, mineral fibres, mica, titanium dioxide or filler level china clay.
6. the described wood-free paper of according to claim 1-5 any one is characterized in that: the preliminary treatment of described fibre stuff refers to and utilizes biology enzyme to process fibre stuff, and wherein biology enzyme is selected from the fibre modification enzyme.
7. the described wood-free paper of according to claim 1-6 any one, it is characterized in that: described wood-free paper basis weight range is 50～120gsm, bulk is 1.0～2.0cm
3/ g.
8. the described wood-free paper of according to claim 1-7 any one, is characterized in that: described wood-free paper surface sizing starch coating weight 5-10g/m
2.
9. the preparation method of the described wood-free paper of claim 1-8 any one, is characterized in that: comprise the steps:
(1) slurrying
Take in proportion each fibre stuff, pass through loose slurry, clean slurry, defibrination or discongest, by preliminary treatment, make mixed slurry;
(2) add chemical addition agent
In mixed slurry, add filler and internal sizing agent, mix;
(3) top sizing
Starch coating weight 5-10g/m
2
(4) back segment press polish
Pressure is controlled at 10-30kg/cm
2.
10. preparation method according to claim 9, is characterized in that: described starch coating weight 8g/m
2, back segment press polish pressure is controlled at 25kg/cm
2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103223702A CN103397560A (en) | 2013-07-29 | 2013-07-29 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103223702A CN103397560A (en) | 2013-07-29 | 2013-07-29 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
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|---|---|
| CN103397560A true CN103397560A (en) | 2013-11-20 |
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|---|---|---|---|
| CN2013103223702A Pending CN103397560A (en) | 2013-07-29 | 2013-07-29 | Two-sided offset paper for paper bags and preparation method of two-sided offset paper |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104499377A (en) * | 2014-11-13 | 2015-04-08 | 金东纸业（江苏）股份有限公司 | Lamination paperboard and production method thereof |
| CN104499342A (en) * | 2014-11-25 | 2015-04-08 | 南通新世纪机电有限公司 | Waterproof kraft paper manufacturing process |
| CN104499343A (en) * | 2014-11-25 | 2015-04-08 | 南通新世纪机电有限公司 | Water-absorbing kraft paper manufacturing process |
| 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 |
| CN108978320A (en) * | 2018-07-12 | 2018-12-11 | 福建省晋江优兰发纸业有限公司 | A kind of preparation method of wood-free paper |
| CN110747676A (en) * | 2019-10-31 | 2020-02-04 | 广宁县正达特种纸业有限公司 | Preparation method and application of high-strength adhesive tape |
| CN114438808A (en) * | 2022-01-11 | 2022-05-06 | 中荣印刷集团股份有限公司 | Preparation method of environment-friendly high-barrier paper bag for edible contact |
| CN116122073A (en) * | 2022-12-13 | 2023-05-16 | 金东纸业（江苏）股份有限公司 | The white double-adhesive paper and the preparation method thereof |
| 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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104499377A (en) * | 2014-11-13 | 2015-04-08 | 金东纸业（江苏）股份有限公司 | Lamination paperboard and production method thereof |
| CN104499342A (en) * | 2014-11-25 | 2015-04-08 | 南通新世纪机电有限公司 | Waterproof kraft paper manufacturing process |
| CN104499343A (en) * | 2014-11-25 | 2015-04-08 | 南通新世纪机电有限公司 | Water-absorbing kraft paper manufacturing process |
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| CN110747676A (en) * | 2019-10-31 | 2020-02-04 | 广宁县正达特种纸业有限公司 | Preparation method and application of high-strength adhesive tape |
| CN110747676B (en) * | 2019-10-31 | 2022-04-26 | 广宁县正达特种纸业有限公司 | Preparation method and application of high-strength double-sided offset paper |
| CN114438808A (en) * | 2022-01-11 | 2022-05-06 | 中荣印刷集团股份有限公司 | Preparation method of environment-friendly high-barrier paper bag for edible contact |
| CN116122073A (en) * | 2022-12-13 | 2023-05-16 | 金东纸业（江苏）股份有限公司 | The white double-adhesive paper and the preparation method thereof |
| 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 |
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