CN109957981A - A kind of high-strength high stretched paper bag process thoroughly of production - Google Patents
A kind of high-strength high stretched paper bag process thoroughly of production Download PDFInfo
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- CN109957981A CN109957981A CN201711415966.1A CN201711415966A CN109957981A CN 109957981 A CN109957981 A CN 109957981A CN 201711415966 A CN201711415966 A CN 201711415966A CN 109957981 A CN109957981 A CN 109957981A
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- washing
- concentration
- paper bag
- screening
- stretched paper
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Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C3/00—Pulping cellulose-containing materials
- D21C3/02—Pulping cellulose-containing materials with inorganic bases or alkaline reacting compounds, e.g. sulfate processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/02—Washing ; Displacing cooking or pulp-treating liquors contained in the pulp by fluids, e.g. wash water or other pulp-treating agents
Abstract
The invention discloses a kind of high-strength high stretched paper bag processes thoroughly of production, use 100% Softwood salt wood pulp obtained, through slurrying, shove concentration, the high concentration mashing through 32-35%, the low concentration of 4-6% is beaten, again through streaming condiment, screening before net, Top wire former, squeezing, drying, batch, rewinding, be packaged, weight in wet base 15-18g, setting online concentration are 0.2%-0.35%, and online pH value is 5.5-6.5；Quantification of 90g/ ㎡ of gained stretched paper bag, longitudinal tear index 13MN. ㎡/g, longitudinal tensile strain rate 7-9%, cross direction elongation 9-10%, 6-16 μm of air permeability/Pa.S, longitudinal tensile energy absorption 2.5-3.5J/ ㎡/g, lateral tensile energy absorption 2.0-4.0J/ ㎡/g, it can produce and meet stretched paper bag technical requirements and the lower high-strength high ventilative stretched paper bag of cost, it is energy saving, substantially reduce broken rate.
Description
Technical field
The present invention relates to sack kraft paper field, especially a kind of high-strength high stretched paper bag process thoroughly of production.
Background technique
Need to use sack kraft paper in bagged cement packaging process, due to the resistance to broken, tearing of high-strength high ventilative stretched paper bag,
Tensile strength, air permeability are better than common stretched paper bag, make of two layers of bag of cement that the paper makes than three layers of common stretchable paper
Bag of cement broken rate it is also low, packaging purpose can be reached using the paper of less total amount, be conducive to the consumption that economizes on resources.With
Industrial development, to improve production efficiency, modern cement plant is spoken out of turn using Quick-filling equipment, this requires bag of cement to necessarily require foot
Enough strong anti-tensile, energy absorption and stronger permeability.Large quantity of air enters in bag of cement during Quick-filling,
If air is not discharged quickly, bag of cement will be by impact bale broken.Sack kraft paper punches in bag of cement manufacturing factory currently on the market
Processing enhances bag of cement exhaust performance, but also reduces the performances such as the anti-tensile of sack kraft paper, energy absorption.
Therefore, permeability can be improved by how designing, and bag making factory can be made to punch paper bag paper low and do not punched even, from
And guaranteeing that bag of cement keeps lower broken rate is urgent problem.
Summary of the invention
It, can technical problem to be solved by the present invention lies in a kind of high-strength high stretched paper bag process thoroughly of production is provided
To improve the permeability of sack kraft paper, to reduce broken rate in production and living.
To achieve the goals above, basic conception of the invention is:
A kind of high-strength high stretched paper bag process thoroughly of production, production process include slurrying, shove concentration, it is highly concentrated kowtow,
It is low it is dense kowtow, stream screening before condiment, net, Top wire former, squeezing, drying, batch, rewinding, packing, the slurrying includes chip water
Washing and sieving choosing, presteaming, decatize, dipping, boiling, for the first time washing, second of washing, screening, depth washing, the high consistency refining
Concentration be 32-35%, it is highly concentrated to kowtow 15-18 ° of SR of rear beating degree, low dense refining concentration 4-6%, it is low dense to kowtow 22-28 ° of rear beating degree
SR, weight in wet base 15-18g, setting online concentration 0.2%-0.35%, surf the Internet pH value 5.5-6.5.
Further, the production method specific steps include:
(1) slurrying: the slurrying includes chip washing screening, presteaming, decatize, dipping, boiling, for the first time washing, the
Secondary washing, screening, depth washing；
(2) shove is concentrated: paper pulp is concentrated using twin-wire press, makes pulp density up to 32-35%；
(3) highly concentrated to kowtow: beating, 15-18 ° of SR of beating degree after beating are carried out to the high consistency refining of concentration 32-35%；
(4) low dense to kowtow: beating, 22-28 ° of SR of beating degree after beating are carried out to the low dense defibrination of concentration 4-6%；
(5) stream condiment: addition drying strengthening agent, starch add mthod of white water from paper making and aluminum sulfate and sizing agent；
(6) screen before net: setting online concentration 0.3%, the screening conditions of online pH value 5.5-6.5 are screened；
(7) it Top wire former: is shaped by two layers of mesh and compound；
(8) it squeezes: using blind-hole roll squeezing and shoe-press；
(9) dry: page being placed in stretching property cylinder and is dried, 110-115 DEG C of temperature of stretching property cylinder surfaces, page is in stretching property
Cylinder shrinkage ratio is 5.2-5.8%；
(10) it batches, rewinding, packing.
Further, the concrete operation step of step (1) slurrying includes:
A, chip washing screens: raw material wood chip enters vibratory chip storehouse through washing screening；
B, it presteaming: is stopped 13-17 minutes in wood chip vibration storehouse and steam progress presteaming is added；
C, decatize: enter steaming vessel by wood chip meter, low-pressure feeding device and carry out abundant decatize；
D, it impregnates: high pressure pre-preg device being transferred to via high pressure feeder by the liquid-conveying amount of certain liquor ratio and carries out alkali
Liquid pre-preg, active alkali content is calculated as 20% with NaOH in lye, dip time 30-40min；
E, boiling: being transferred to wood chip with certain proportion liquid by transfer circulating pump and carry out boiling in pressure cookers,
Boiling temperature is 166 DEG C；
F, it washs for the first time: carrying out high-temperature reflux washing after boiling；
G, wash for second: slurry carries out secondary washing by spurting into diffuser；
H, screening, depth washing: enter addition in pulp system and carry out sufficiently screening and depth washing.
Further, the blind drilled press line pressure 150-170KN/M, shoe-press line pressure 900-970KN/M.
Further, the drying is divided into preceding drying and rear drying, and web dryness is 40-42% before being dried, warp
Moisture is 35-38% after preceding drying, and moisture is 9.2% after drying after.
Further, certain liquor ratio refers to that the ratio of lye and water is 1:20 in the step D dipping process.
By the technical program, following effect may be implemented:
(1) it can produce and meet stretched paper bag technical requirements and the lower high-strength high ventilative stretched paper bag of cost；
(2) stretched paper bag produced meets QB/T1460-1992 standard requirements stretched paper bag, and page enters dry water
Divide more low consumed steam fewer, the energy is saved；
(3) substantially reduce the broken rate of sack kraft paper with the low dense method combined of kowtowing using highly concentrated kowtow.
Detailed description of the invention
Fig. 1 is the production process schematic diagram of the technical program sack kraft paper；
Fig. 2 is the production process schematic diagram of slurrying link in the technical program；
Fig. 3 is the corresponding sack kraft paper parameter list of three embodiments of the technical program.
Specific embodiment
The invention will be further described in the following with reference to the drawings and specific embodiments.It should be noted that following institute
Technical characteristic involved in each embodiment of the present invention of description can be combined with each other as long as they do not conflict with each other.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows: needle wood chip enters vibratory chip storehouse through washing screening, stops 13-17min and is added
Steam carries out presteaming, enters after steaming vessel carries out abundant decatize using wood chip meter, low-pressure feeding device, by by lye
High pressure preimpregnation is transferred to via high pressure feeder according to the liquid-conveying amount of certain liquor ratio made of weight ratio 1:20 allotment with water
Stain device passes through the lye pre-preg of 30min herein, wherein active alkali content is calculated as 20% with NaOH, later by transferring circulation
Pump, which is transferred to wood chip in pressure cookers with certain proportion liquid made of water allotment with the lye of weight ratio 1:20, to be steamed
It boils and is washed with high-temperature reflux, boiling temperature is 166 DEG C, and slurry carries out secondary washing by spurting into diffuser, finally
Accepted stock pulp storage tower paper supplying machine is sent to after carrying out sufficiently screening and depth washing into addition in pulp system to manufacture paper with pulp use.
Then shove concentration is carried out, paper pulp is concentrated using twin-wire press, makes pulp density up to 32%.
Again through high consistency refining to 15 ° of SR of beating degree, it is diluted to concentration 4%, is beaten to beating degree 22 ° of SR, weight in wet base 15g,
Slurry adds drying strengthening agent, starch after diluting, and adds mthod of white water from paper making and aluminum sulfate and sizing agent, control online concentration
0.2%, pH value 5.5 of surfing the Internet, through two layers of mesh forming and compound, blind-hole roll squeezing and 900- through pressure 150-170KN/M
The shoe-press of 970KN/M, the mass dryness fraction into dry preceding page is 40-42%, premenstrual dry to page moisture 36%, is received through stretching property
Contracting effect controls 110-115 DEG C of temperature of stretching property cylinder surfaces, and stretching property shrinkage ratio 5.2%, paper industry drying after is dried to moisture content
9.2%, batched, quantification of 90g/ ㎡ is produced in rewinding, packing, longitudinal tear index 13MN. ㎡/g, longitudinal tensile strain rate 7%,
Cross direction elongation 9%, air permeability 6 μm/Pa.S, longitudinal tensile energy absorption 2.5J/ ㎡/g, lateral tensile energy absorption 2.0J/
The stretched paper bag of ㎡/g.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 shows: needle wood chip enters vibratory chip storehouse through washing screening, stops 13-17min and is added
Steam carries out presteaming, enters after steaming vessel carries out abundant decatize using wood chip meter, low-pressure feeding device, by by lye
High pressure preimpregnation is transferred to via high pressure feeder according to the liquid-conveying amount of certain liquor ratio made of weight ratio 1:20 allotment with water
Stain device passes through the lye pre-preg of 35min herein, wherein active alkali content is calculated as 20% with NaOH, later by transferring circulation
Pump, which is transferred to wood chip in pressure cookers with certain proportion liquid made of water allotment with the lye of weight ratio 1:20, to be steamed
It boils and is washed with high-temperature reflux, boiling temperature is 166 DEG C, and slurry carries out secondary washing by spurting into diffuser, finally
Accepted stock pulp storage tower paper supplying machine is sent to after carrying out sufficiently screening and depth washing into addition in pulp system to manufacture paper with pulp use.
Then shove concentration is carried out, paper pulp is concentrated using twin-wire press, makes pulp density up to 33%.
Through high consistency refining to 17 ° of SR of beating degree, it is diluted to concentration 5%, is beaten to beating degree 24 ° of SR, weight in wet base 17g, slurry
Material adds drying strengthening agent, starch after diluting, and adds mthod of white water from paper making and aluminum sulfate and sizing agent, controls online concentration 0.3%,
Online pH value 6.0, shapes and compound through two layers of mesh, blind-hole roll squeezing and 900-970KN/M through pressure 150-170KN/M
Shoe-press, the mass dryness fraction of page is 35-38% before being dried, premenstrual dry to page moisture 36%, through the contraction of stretching property,
110-115 DEG C of temperature of stretching property cylinder surfaces of control, stretching property shrinkage ratio 5.3%, paper industry drying after are dried to moisture content 9.2%,
Batched, quantification of 90g/ ㎡ is produced in rewinding, packing, longitudinal tear index 13MN. ㎡/g, longitudinal tensile strain rate 8%, laterally stretch
Long rate 9-10%, air permeability 11 μm/Pa.S, longitudinal tensile energy absorption 3J/ ㎡/g, lateral tensile energy absorption 3J/ ㎡/g's
Stretched paper bag.
Embodiment 3
As shown in Figure 1, Figure 2, Figure 3 shows: needle wood chip enters vibratory chip storehouse through washing screening, stops 13-17min and is added
Steam carries out presteaming, enters after steaming vessel carries out abundant decatize using wood chip meter, low-pressure feeding device, by by lye
High pressure preimpregnation is transferred to via high pressure feeder according to the liquid-conveying amount of certain liquor ratio made of weight ratio 1:20 allotment with water
Stain device passes through the lye pre-preg of 40min herein, wherein active alkali content is calculated as 20% with NaOH, later by transferring circulation
Pump, which is transferred to wood chip in pressure cookers with certain proportion liquid made of water allotment with the lye of weight ratio 1:20, to be steamed
It boils and is washed with high-temperature reflux, boiling temperature is 166 DEG C, and slurry carries out secondary washing by spurting into diffuser, finally
Accepted stock pulp storage tower paper supplying machine is sent to after carrying out sufficiently screening and depth washing into addition in pulp system to manufacture paper with pulp use.
Then shove concentration is carried out, paper pulp is concentrated using twin-wire press, makes pulp density up to 35%
Again through high consistency refining to 18 ° of SR of beating degree, it is diluted to concentration 6%, is beaten to beating degree 28 ° of SR, weight in wet base 18g,
Slurry adds drying strengthening agent, starch after diluting, and adds mthod of white water from paper making and aluminum sulfate and sizing agent, control online concentration
0.35%, pH value 6.5 of surfing the Internet, through two layers of mesh forming and compound, blind-hole roll squeezing and 900- through pressure 150-170KN/M
The shoe-press of 970KN/M, the mass dryness fraction into dry preceding page is 40-42%, premenstrual dry to page moisture 38%, is received through stretching property
Contracting effect controls 110-115 DEG C of temperature of stretching property cylinder surfaces, and stretching property shrinkage ratio 5.2%, paper industry drying after is dried to moisture content
9.2%, batched, quantification of 90g/ ㎡ is produced in rewinding, packing, longitudinal tear index 13MN. ㎡/g, longitudinal tensile strain rate 9%,
Cross direction elongation 10%, air permeability 16 μm/Pa.S, longitudinal tensile energy absorption 3.5J/ ㎡/g, lateral tensile energy absorption
The stretched paper bag of 4.0J/ ㎡/g.
The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention,
Therefore the changes or modifications that claim under this invention and specification are done in every case, it all should belong to the range that the invention patent covers
Within.
Claims (6)
1. a kind of high-strength high stretched paper bag process thoroughly of production, production process includes slurrying, shove concentration, highly concentrated kowtow, is low
It is dense to kowtow, stream screening before condiment, net, Top wire former, squeezing, drying, batch, rewinding, packing, which is characterized in that the slurrying
Including chip washing screening, presteaming, decatize, dipping, boiling, for the first time washing, second of washing, screening, depth washing, institute
The concentration for stating high consistency refining is 32-35%, highly concentrated to kowtow 15-18 ° of SR of rear beating degree, low dense refining concentration 4-6%, it is low it is dense kowtow after kowtow
Solution degree 22-28 ° of SR, weight in wet base 15-18g, setting online concentration 0.2%-0.35%, surf the Internet pH value 5.5-6.5.
2. the high-strength high stretched paper bag process thoroughly of a kind of production according to claim 1, which is characterized in that the system
Making method specific steps includes:
(1) slurrying: the slurrying includes chip washing screening, presteaming, decatize, dipping, boiling, washing for the first time, second
Washing, screening, depth washing；
(2) shove is concentrated: paper pulp is concentrated using twin-wire press, makes pulp density up to 32-35%；
(3) highly concentrated to kowtow: beating, 15-18 ° of SR of beating degree after beating are carried out to the high consistency refining of concentration 32-35%；
(4) low dense to kowtow: beating, 22-28 ° of SR of beating degree after beating are carried out to the low dense defibrination of concentration 4-6%；
(5) stream condiment: addition drying strengthening agent, starch add mthod of white water from paper making and aluminum sulfate and sizing agent；
(6) screen before net: setting online concentration 0.3%, the screening conditions of online pH value 5.5-6.5 are screened；
(7) it Top wire former: is shaped by two layers of mesh and compound；
(8) it squeezes: using blind-hole roll squeezing and shoe-press；
(9) dry: page being placed in stretching property cylinder and is dried, 110-115 DEG C of temperature of stretching property cylinder surfaces, page is received in stretching property cylinder
Contracting is than being 5.2-5.8%；
(10) it batches, rewinding, packing.
3. the high-strength high stretched paper bag process thoroughly of a kind of production according to claim 2, which is characterized in that the step
Suddenly the concrete operation step of (1) slurrying includes:
A, chip washing screens: raw material wood chip enters vibratory chip storehouse through washing screening；
B, it presteaming: is stopped 13-17 minutes in wood chip vibration storehouse and steam progress presteaming is added；
C, decatize: enter steaming vessel by wood chip meter, low-pressure feeding device and carry out abundant decatize；
D, impregnate: via high pressure feeder being transferred to high pressure pre-preg device by the liquid-conveying amount of certain liquor ratio, to carry out lye pre-
It impregnates, active alkali content is calculated as 20% with NaOH in lye, dip time 30-40min；
E, boiling: wood chip is transferred to certain proportion liquid by transfer circulating pump and carries out boiling, boiling in pressure cookers
Temperature is 166 DEG C；
F, it washs for the first time: carrying out high-temperature reflux washing after boiling；
G, wash for second: slurry carries out secondary washing by spurting into diffuser；
H, screening, depth washing: enter addition in pulp system and carry out sufficiently screening and depth washing.
4. a kind of production method of stretched paper bag according to claim 2, which is characterized in that the blind drilled press line pressure
Power 150-170KN/M, shoe-press line pressure 900-970KN/M.
5. a kind of production method of stretched paper bag according to claim 2, which is characterized in that the drying is dry before being divided into
Dry and rear drying, web dryness is 40-42% before being dried, and moisture is 35-38% after premenstrual drying, the water after drying after
It is divided into 9.2%.
6. pulping process according to claim 4, which is characterized in that certain liquor ratio refers in the step D dipping process
Be the ratio of lye and water be 1:20.
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| CN201711415966.1A CN109957981A (en) | 2017-12-25 | 2017-12-25 | A kind of high-strength high stretched paper bag process thoroughly of production |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110733280A (en) * | 2019-09-29 | 2020-01-31 | 高邮市卫星卷烟材料有限公司 | gold stamping paper with strong compressive strength and preparation method thereof |
| CN111893794A (en) * | 2020-08-11 | 2020-11-06 | 岳阳林纸股份有限公司 | Method for manufacturing natural-color handbag paper |
| CN112431060A (en) * | 2020-11-13 | 2021-03-02 | 福建省青山纸业股份有限公司 | Production method of environment-friendly craft paper |
| CN112878089A (en) * | 2021-03-18 | 2021-06-01 | 山鹰纸业(广东)有限公司 | Preparation method of high-breaking-resistance kraft paper |
| CN114622440A (en) * | 2022-03-17 | 2022-06-14 | 日照华泰纸业有限公司 | Production process of plastic-free paper for express packaging bags |
| CN114960291A (en) * | 2022-05-27 | 2022-08-30 | 华南理工大学 | High-air-permeability extensible paper bag and preparation method thereof |
| CN115075041A (en) * | 2022-05-18 | 2022-09-20 | 华南理工大学 | High-air-permeability paper bag and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110733280A (en) * | 2019-09-29 | 2020-01-31 | 高邮市卫星卷烟材料有限公司 | gold stamping paper with strong compressive strength and preparation method thereof |
| CN111893794A (en) * | 2020-08-11 | 2020-11-06 | 岳阳林纸股份有限公司 | Method for manufacturing natural-color handbag paper |
| CN112431060A (en) * | 2020-11-13 | 2021-03-02 | 福建省青山纸业股份有限公司 | Production method of environment-friendly craft paper |
| CN112878089A (en) * | 2021-03-18 | 2021-06-01 | 山鹰纸业(广东)有限公司 | Preparation method of high-breaking-resistance kraft paper |
| CN112878089B (en) * | 2021-03-18 | 2023-02-14 | 山鹰纸业(广东)有限公司 | Preparation method of high-breaking-resistance kraft paper |
| CN114622440A (en) * | 2022-03-17 | 2022-06-14 | 日照华泰纸业有限公司 | Production process of plastic-free paper for express packaging bags |
| CN115075041A (en) * | 2022-05-18 | 2022-09-20 | 华南理工大学 | High-air-permeability paper bag and preparation method and application thereof |
| CN114960291A (en) * | 2022-05-27 | 2022-08-30 | 华南理工大学 | High-air-permeability extensible paper bag and preparation method thereof |
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