CN104480777B - A kind of hanging raw stock and its production method - Google Patents
A kind of hanging raw stock and its production method Download PDFInfo
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- CN104480777B CN104480777B CN201410640509.2A CN201410640509A CN104480777B CN 104480777 B CN104480777 B CN 104480777B CN 201410640509 A CN201410640509 A CN 201410640509A CN 104480777 B CN104480777 B CN 104480777B
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Abstract
The present invention relates to field of papermaking, and in particular to a kind of hanging raw stock and its production method.Hanging raw stock of the invention is manufactured paper with pulp by slurry and auxiliary material, 0-10 parts of bleached chemical softwood pulp, 40~60 parts of bleached chemical hardwood pulp, 30~60 parts of bleached chemical thermomechanical pulp and 0~5 part of secondary stock；The auxiliary material includes 15~25 parts of filler, 2.0~3.5 parts of wet strength agent, 0.5~0.7 part of carboxymethyl cellulose, starches interior 0.8~1.2 part of starch, 1.0~2.5 parts of internal sizing agent, retains auxiliary agent, drainage auxiliary agent.The bleached chemical thermomechanical pulp that the present invention passes through selection high bulk, with the use of a part of secondary stock, wet strength agent is used in combination with carboxymethyl cellulose, production cost is not only reduced to greatest extent, and guarantee that hanging raw stock has splendid intensity, good dimensional stability and lower green deformation rate.
Description
Technical field
The present invention relates to field of papermaking, and in particular to a kind of hanging raw stock and its production method.
Background technique
Wallpaper has color multiplicity, and pattern is abundant, luxurious style, safety and environmental protection, easy for construction, affordable etc. it is a variety of its
The incomparable feature of its house decorative material, therefore obtained in global more developed countries and regions considerable degree of general
And.There are many wallpaper type, usually produce body paper with bleached wood pulp, then are to bond film forming agent, and be added and fill out with resin, plastics
Thermoplastic coating is made in material, pigment and other auxiliary materials, is then then pressed in conjunction with body paper using complicated manufacture craft
The art decorations such as flower, stamp or foaming and be made.Due to the complexity of back segment processing, it is quite tight to determine that hanging raw stock needs
The Con trolling index of lattice.Wherein specifically include that base weight, thickness, tensile strength, wet anti-tensile retention rate, smoothness, whiteness, opaque
Degree, water imbibition and green deformation rate.
Common hanging raw stock base weight is controlled in 100g/m on the market at present2Near, green deformation rate < 1.5%.Traditional
Production technology generally uses 40~50% bleached chemical thermomechanical pulp and partial bleached kraft pulp, extremely through defibrination process
Freedom appropriate is added wet strength agent, drying strengthening agent, sizing agent, filler, shapes through paper machine, at top sizing and press polish
Reason obtains hanging raw stock.For example, finding through retrieval, the patent of invention that Authorization Notice No. is 100585073 discloses a kind of wall
Paper body paper, body paper paper pulp are made of slurry and auxiliary material, and the slurry is by needle bleached wood pulp, broad-leaved bleached chemical wood
Slurry, the combination of needle bleached chemical thermomechanical pulp are constituted；The auxiliary material is by starch, filler, internal sizing agent, top sizing in starching
Agent, wet strength agent, retention agent combination are constituted.
Above-mentioned hanging raw stock has following defects that first but due to the thermomechanical pulp of addition more amount, will lead to body paper
Intensity is inadequate, influences back segment processing；Secondly because the addition of wet strength agent, leads to the charge disorder of paper machine system, causes grey code insurance
It stays rate seriously to reduce, influences production efficiency；It reuses different wood pulps to be used in compounding, green deformation rate is caused to be not easily controlled.
Summary of the invention
In order to overcome various defects existing in the prior art, the first object of the present invention is to provide a kind of wallpaper original
Paper, the second object of the present invention are to provide a kind of production method of hanging raw stock.
In order to reach the first object of the present invention, The technical solution adopted by the invention is as follows: the slurry presses mass parts packet
It includes: 0-10 parts of bleached chemical softwood pulp, 40~60 parts of bleached chemical hardwood pulp, 30~60 parts of bleached chemical defibrator process
Mechanical pulp and 0~5 part of secondary stock
The auxiliary material includes 15~25 parts of filler, and 2.0~3.5 parts of wet strength agent, 0.5~0.7 part of carboxymethyl cellulose, in slurry
0.8~1.2 part of starch, 1.0~2.5 parts of internal sizing agent, retain auxiliary agent, drainage auxiliary agent retains auxiliary agent adding relative to ton paper
Entering amount is 50~400ppm, and drainage auxiliary agent is 2000~6000ppm relative to the additional amount of ton paper.
Wherein, the effect for bleached chemical softwood pulp being added is in order to guarantee paper strength, to keep paper machine operation smooth；
Its tree species is typically chosen Southern Pine, north pine, dragon spruce or Oak Tree, one or more compound also；Beating degree selection Canada
Freedom is 350~550ml, preferably 400~500ml of Canadian freeness.
Wherein, bleached chemical hardwood pulp is to the various performances of intensity between bleached chemical softwood pulp and bleached chemical defibrator process
Between mechanical pulp, therefore it can control production cost under the premise of guaranteeing paper properties；Its tree species is typically chosen white
Poplar, Eucalyptus, Acacia or maple etc., it is one or more compound also；Beating degree select Canadian freeness for 350~
550ml, preferably 400~500ml of Canadian freeness.
Wherein, bleached chemical thermomechanical pulp has preferable dimensional stability, and it can provide paper excellent bulk,
The bulk and green deformation rate that can make paper after addition are controlled in a certain range.
In order to make hanging raw stock bulk with higher and higher intensity, the bleached chemical defibrator process of selection of the invention
Mechanical pulp is the mechanical pulp of high bulky, bulk 3.0cm3/ g or more.
Secondary stock, which is added, can both save cost declining, while can also inhibit paper green deformation to a certain degree；It is preferred that body paper
Dry, wet broke.
The present invention by slurry and auxiliary material composition and content adjustment, not only make hanging raw stock have splendid intensity,
Dimensional stability, bulk, and production cost is reduced to greatest extent.
The better product of the indexs such as intensity, green deformation rate and thickness in order to obtain, present invention preferably employs following technologies
Scheme: the slurry by the bleached chemical softwood pulp that mass parts include: that the slurry includes: 5~10 parts by mass parts, 45~
55 parts of bleached chemical hardwood pulp, 30~37 parts of bleached chemical thermomechanical pulp and 3~5 parts of secondary stock；Retain
Auxiliary agent is 250~400ppm relative to the additional amount of ton paper, drainage auxiliary agent relative to the additional amount of ton paper be 2500~
4000ppm。
Specifically, the filler chooses one or both of grinding calcium carbonate (GCC) and precipitated calcium carbonate (PCC)；It is wet
Lauxite (U-F), melamine resin (M-F) and polyamide diamines epichlorohydrin resin (PAE) are chosen in strong agent
It is one or more of；Starch chooses cationic oxidation starch in starching；Internal sizing agent chooses alkyl ketene dimer (AKD) or alkenyl
One or both of succinic anhydride (ASA)；Retain the positive reservation auxiliary agent of auxiliary agent selection and negative reservation auxiliary agent；The choosing of drainage auxiliary agent
Take silica solution or bentonite.
More specifically, the filler chooses precipitated calcium carbonate；The wet strength agent chooses polyamide diamines epoxychloropropane tree
Rouge；Internal sizing agent chooses alkenyl succinic anhydride；The positive retains auxiliary agent and chooses positive polyacrylamide, and feminine gender retains auxiliary agent and chooses
Negative polyacrylamide；Drainage auxiliary agent selects silica solution.
PAE, U-F, M-F wet strength agent have stronger cationic, and it is unbalance to can lead to paper machine System Charges after addition, this meeting
Seriously affect the retention of all components, and the present invention is by can be with balancing charge and can be certain after addition carboxymethyl cellulose
Paper strength is promoted in degree.
Another technical solution of the invention, the production method of hanging raw stock, comprising the following steps:
(1) carboxylic first scattered slurry, net slurry, the defibrination of bleached chemical hardwood pulp: is added before bleached chemical hardwood pulp defibrination
Base cellulose adds wet strength agent after bleached chemical hardwood pulp defibrination, obtains mixture；
(2) by step (1) resulting mixture and bleached chemical softwood pulp, bleached chemical thermomechanical pulp, secondary fibre
Dimension is configured to mixed slurry；
(3) starch, the positive auxiliary agent that retains in internal sizing agent, part slurry are uniformly mixed, obtain auxiliary material mixture 1；It will filter
Water auxiliary agent and the negative auxiliary agent that retains are uniformly mixed, and obtain auxiliary material mixture 2；
(4) starch in remaining slurry is successively added in step (2) resulting mixed slurry, filler, auxiliary material mixture 1,
Auxiliary material mixture 2；Through online dehydration, press dewatering, dry, obtain the hanging raw stock without top sizing；
(5) hanging raw stock without top sizing resulting to step (4) carries out top sizing, and soft calender obtains wallpaper
Body paper.Any technical solution in the prior art can be selected in Cypres.
The production method of hanging raw stock of the invention, by adding carboxymethyl fibre before bleached chemical hardwood pulp defibrination
Dimension element, adds wet strength agent after bleached chemical hardwood pulp defibrination, efficiently solves the system because of caused by addition wet strength agent
Retention compromises, for maintaining paper machine system stability and guaranteeing that the smooth operation of paper machine is of great importance.
When paper machine is to produce hanging raw stock, specifically, after step (1) wet strength agent makes an addition to bleached chemical hardwood pulp mill
Storage barrel exit.
Step (2) bleached chemical softwood pulp is before preparation through dissipating slurry, net slurry；Chemical thermomechanical pulp is before preparation through dredging
Solution, net slurry.
Interior starch is starched in step (3) part, accounts for the 4-12% of starch in all starching in mass ratio.
Step (4) the specific steps are added in remaining slurry in paper machine stock tank in step (2) resulting mixed slurry
Starch；Filler is added before one section of fan-shaped pump；Auxiliary material mixture 1 is added before two sections of fan-shaped pumps；In two sections of fan-shaped pumps
Auxiliary material mixture 2 is added afterwards；Through online dehydration, press dewatering, dry, obtain the hanging raw stock without top sizing.
Step (5) uses soft calender, and calendering pressure front side and rear side are 5~80kg/cm, preferably 20~40kg/cm.
Hanging raw stock provided by the invention is used cooperatively one by the bleached chemical thermomechanical pulp of selection high bulk
Fiber in two times, wet strength agent are used in combination with carboxymethyl cellulose, not only reduce production cost to greatest extent, but also guarantee
Hanging raw stock has splendid intensity, good dimensional stability and a lower green deformation rate.
Specific embodiment
The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1- embodiment 3
The hanging raw stock of embodiment 1- embodiment 3 is manufactured paper with pulp by slurry and auxiliary material, the composition of slurry and auxiliary material such as table 1
It is shown.
The composition of 1 embodiment 1- embodiment of table 3 slurry and auxiliary material
The production method of 1 hanging raw stock of embodiment is as follows:
(1) carboxylic first scattered slurry, net slurry, the defibrination of bleached chemical hardwood pulp: is added before bleached chemical hardwood pulp defibrination
Base cellulose adds wet strength agent, after wet strength agent makes an addition to bleached chemical hardwood pulp mill after bleached chemical hardwood pulp defibrination
Storage barrel exit, obtains mixture.
(2) by step (1) resulting mixture and bleached chemical softwood pulp, bleached chemical thermomechanical pulp and secondary
Fiber is configured to mixed slurry, and bleached chemical softwood pulp is before preparation through dissipating slurry, net slurry；Chemical thermomechanical pulp is before preparation
It is discongested, net slurry.
(3) starch, positive retain auxiliary agent (polyacrylamide) in internal sizing agent, 4kg slurry are uniformly mixed, obtain auxiliary material and mixes
Close object 1；Drainage auxiliary agent and negative retain auxiliary agent (polyacrylamide) are uniformly mixed, auxiliary material mixture 2 is obtained；
(4) starch in remaining slurry is added in paper machine stock tank in step (2) resulting mixed slurry；In one section of sector
Filler is added before pump；Auxiliary material mixture 1 is added before two sections of fan-shaped pumps；Auxiliary material mixture is added after two sections of fan-shaped pumps
2；Through online dehydration, press dewatering, dry, obtain the hanging raw stock without top sizing.
(5) hanging raw stock without top sizing resulting to step (4) carries out top sizing, and soft calender batches pressure
Light pressure is 40/40kg/cm (front/rear), obtains hanging raw stock.Cypres in the present embodiment select oxidized starch and
CMC。
In the production method of 2 hanging raw stock of embodiment in addition to 3kg is added in step (3) and starches interior starch, remaining step
It is same as Example 1.
In the production method of 3 hanging raw stock of embodiment in addition to 5kg is added in step (3) and starches interior starch, remaining step
It is same as Example 1.
The performance of hanging raw stock is as shown in table 2 in embodiment 1- embodiment 3.
The performance of 2 embodiment 1- embodiment of table, 3 hanging raw stock
| Embodiment 1 | Embodiment 2 | Embodiment 3 | |
| Base weight (g/m2) | 95 | 95 | 95 |
| Bulk (cm3/g) | 1.78 | 1.75 | 1.72 |
| Tensile index (Nm/g) | 45 | 47 | 52 |
| Cobb60(g/m2) | 25 | 23 | 22 |
| Wet anti-tensile retention rate (%) | 15 | 18 | 17 |
| Smoothness sec/10cc | 15/15 | 15/14 | 13/15 |
| Pull out wax degree ° A | 16/16 | 16/16 | 16/16 |
| Ash content (%) | 20 | 25 | 22 |
| Elongation (%) in water | 1.43 | 1.47 | 1.42 |
Embodiment 4- embodiment 6
The hanging raw stock of embodiment 4- embodiment 6 is manufactured paper with pulp by slurry and auxiliary material, the composition of slurry and auxiliary material such as table 3
It is shown.
The composition of 3 embodiment 4- embodiment of table 6 slurry and auxiliary material
In the production method of 4 hanging raw stock of embodiment in addition to 4kg is added in step (3) and starches interior starch, remaining step
It is same as Example 1.
In the production method of 5 hanging raw stock of embodiment in addition to 3kg is added in step (3) and starches interior starch, remaining step
It is same as Example 1.
In the production method of 6 hanging raw stock of embodiment in addition to 5kg is added in step (3) and starches interior starch, remaining step
It is same as Example 1.
The performance of hanging raw stock is as shown in table 4 in embodiment 4- embodiment 6.
The performance of 4 embodiment 4- embodiment of table, 6 hanging raw stock
| Embodiment 4 | Embodiment 5 | Embodiment 6 | |
| Base weight (g/m2) | 100 | 110 | 90 |
| Bulk (cm3/g) | 1.77 | 1.68 | 1.68 |
| Tensile index (Nm/g) | 53 | 58 | 59 |
| Cobb60(g/m2) | 23 | 25 | 22 |
| Wet anti-tensile retention rate (%) | 15.3 | 14.9 | 15.5 |
| Smoothness sec/10cc | 7/7 | 9/9 | 8/9 |
| Pull out wax degree ° A | 16/16 | 16/16 | 16/16 |
| Ash content (%) | 19.3 | 19.1 | 19.1 |
| Elongation (%) in water | 1.40 | 1.44 | 1.44 |
Comparative example
The hanging raw stock selected in comparative example is manufactured paper with pulp by slurry and auxiliary material, and wherein slurry includes bleached chemical needlebush
Slurry, 250kg；Bleached chemical hardwood pulp, 100kg；Bleached chemical thermomechanical pulp, 650kg；
Auxiliary material includes precipitated calcium carbonate 250kg；PAE, 28kg；Oxidized starch, 30kg；CMC, 2kg；Starch in starching, 20kg；
AKD, 10kg；Silica solution, 2kg；PAM, 800ppm.
In comparative example hanging raw stock the preparation method is as follows:
(1) needle bleached wood pulp, bleached chemical hardwood pulp, bleached chemical thermomechanical pulp are configured to by composition
Slurry；
(2) starch, calcium carbonate, AKD, oxidized starch, CMC, PAE, PAM and silica solution are according to the ratio of adjuvant in starching
It is formulated as auxiliary material；
(3) after mixing the slurry and auxiliary material, the hanging raw stock paper pulp is constituted, water tune is added in the body paper paper pulp
The online slurry that online concentration is 0.6-0.9% is made, through fourdrinier wire dehydration, press dewatering, drying, top sizing, press polish ornamenting,
It finally rolls as hanging raw stock.
The hanging raw stock of comparative example preparation is tested, it is as follows to obtain its performance:
| Comparative example | |
| Base weight (g/m2) | 95 |
| Bulk (cm3/g) | 1.68 |
| Cobb60(g/m2) | 25 |
| Tensile index (Nm/g) | 40 |
| Wet anti-tensile retention rate (%) | 12 |
| Smoothness sec/10cc | 10/10 |
| Pull out wax degree ° A | 14/14 |
| Ash content (%) | 20 |
| Elongation (%) in water | 1.5 |
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements, fall within the scope of the claimed invention without departing from theon the basis of the spirit of the present invention.
Claims (8)
1. a kind of hanging raw stock, is manufactured paper with pulp by slurry and auxiliary material, it is characterised in that: the slurry includes: 5~10 by mass parts
The bleached chemical softwood pulp of part, 45~55 parts of bleached chemical hardwood pulp, 30~37 parts of bleached chemical thermomechanical pulp
And 3~5 parts of secondary stock；
The auxiliary material includes 15~25 parts of filler, 2.0~3.5 parts of wet strength agent, 0.5~0.7 part of carboxymethyl cellulose, starches interior starch
0.8~1.2 part, 1.0~2.5 parts of internal sizing agent, retain auxiliary agent, drainage auxiliary agent retains additional amount of the auxiliary agent relative to ton paper
It is 250~400ppm, drainage auxiliary agent is 2500~4000ppm relative to the additional amount of ton paper；
The production method of the hanging raw stock the following steps are included:
(1) it is fine that carboxymethyl scattered slurry, net slurry, the defibrination of bleached chemical hardwood pulp: is added before bleached chemical hardwood pulp defibrination
Dimension element, adds wet strength agent after bleached chemical hardwood pulp defibrination, obtains mixture；
(2) step (1) resulting mixture and bleached chemical softwood pulp, bleached chemical thermomechanical pulp, secondary stock are matched
Mixed slurry is made；
(3) starch, the positive auxiliary agent that retains in internal sizing agent, part slurry are uniformly mixed, obtain auxiliary material mixture 1；Drainage is helped
Agent and the negative auxiliary agent that retains are uniformly mixed, and obtain auxiliary material mixture 2；
(4) starch in remaining slurry, filler, auxiliary material mixture 1, auxiliary material are successively added in step (2) resulting mixed slurry
Mixture 2；Through online dehydration, press dewatering, dry, obtain the hanging raw stock without top sizing；
(5) hanging raw stock without top sizing resulting to step (4) carries out top sizing, and soft calender obtains hanging raw stock.
2. hanging raw stock according to claim 1, it is characterised in that: the filler chooses grinding calcium carbonate and sedimentation carbonic acid
One or both of calcium；Wet strength agent chooses Lauxite, melamine resin and polyamide diamines epoxychloropropane tree
The one or more of rouge；Starch chooses cationic oxidation starch in starching；Internal sizing agent chooses alkyl ketene dimer or alkenyl
One or both of succinic anhydride；Retain the positive reservation auxiliary agent of auxiliary agent selection and negative reservation auxiliary agent；Drainage auxiliary agent chooses silicon
Colloidal sol or bentonite.
3. hanging raw stock according to claim 2, it is characterised in that: the filler chooses precipitated calcium carbonate；It is described wet strong
Polyamide diamines epichlorohydrin resin is chosen in agent；Internal sizing agent chooses alkenyl succinic anhydride；The positive retains auxiliary agent and chooses sun
Property polyacrylamide, feminine gender retains auxiliary agent and chooses negative polyacrylamide；Drainage auxiliary agent selects silica solution.
4. hanging raw stock according to claim 1 or 2, it is characterised in that: the bulky of the bleached chemical thermomechanical pulp
Degree is 3.0cm3/ g or more.
5. the production method of any one of the claim 1-4 hanging raw stock, which comprises the following steps:
(1) it is fine that carboxymethyl scattered slurry, net slurry, the defibrination of bleached chemical hardwood pulp: is added before bleached chemical hardwood pulp defibrination
Dimension element, adds wet strength agent after bleached chemical hardwood pulp defibrination, obtains mixture；
(2) step (1) resulting mixture and bleached chemical softwood pulp, bleached chemical thermomechanical pulp, secondary stock are matched
Mixed slurry is made；
(3) starch, the positive auxiliary agent that retains in internal sizing agent, part slurry are uniformly mixed, obtain auxiliary material mixture 1；Drainage is helped
Agent and the negative auxiliary agent that retains are uniformly mixed, and obtain auxiliary material mixture 2；
(4) starch in remaining slurry, filler, auxiliary material mixture 1, auxiliary material are successively added in step (2) resulting mixed slurry
Mixture 2；Through online dehydration, press dewatering, dry, obtain the hanging raw stock without top sizing；
(5) hanging raw stock without top sizing resulting to step (4) carries out top sizing, and soft calender obtains hanging raw stock；
Step (1) wet strength agent makes an addition to storage barrel exit after bleached chemical hardwood pulp mill.
6. production method according to claim 5, it is characterised in that: step (2) bleached chemical softwood pulp is before preparation
Through dissipating slurry, net slurry；Chemical thermomechanical pulp discongested before preparation, net slurry.
7. production method according to claim 5, it is characterised in that: interior starch is starched in step (3) part, in mass ratio
Account for the 30-60% of starch in all starching.
8. production method according to claim 5, it is characterised in that: step (4) the specific steps are obtained by the step (2)
Mixed slurry in starch in remaining starch is added in paper machine stock tank；Filler is added before one section of fan-shaped pump；In two sections of sectors
Auxiliary material mixture 1 is added before pump；Auxiliary material mixture 2 is added after two sections of fan-shaped pumps；Through the dehydration, press dewatering, baking of surfing the Internet
It does, obtain the hanging raw stock without top sizing.
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| CN104911957B (en) * | 2015-07-06 | 2017-03-15 | 湖北工业大学 | Ecotype wallpaper base stock of admixture phosphogypsum dihydrate whisker and preparation method thereof |
| CN105735035A (en) * | 2016-03-02 | 2016-07-06 | 福建希源纸业有限公司 | Method for producing base wallpaper from waste paper deinking pulp |
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| CN107956191A (en) * | 2017-11-03 | 2018-04-24 | 常州市雄图纺织有限公司 | A kind of preparation method of hanging raw stock |
| CN108265559B (en) * | 2018-01-09 | 2021-04-13 | 广西金桂浆纸业有限公司 | Method for improving paper strength and paper |
| CN108824093A (en) * | 2018-08-10 | 2018-11-16 | 南京林业大学 | A kind of production method reducing hanging raw stock expansion and contraction |
| CN109610225B (en) * | 2018-12-24 | 2021-06-04 | 山东华沙新材料有限公司 | Latex paper and preparation method thereof |
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| CN114541175A (en) * | 2020-11-24 | 2022-05-27 | 金华盛纸业（苏州工业园区）有限公司 | Preparation method of high wet strength paper and high wet strength paper |
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Effective date of registration: 20220705 Address after: 212132, No. 8 Tung Hing East Road, Dagang, Jiangsu, Zhenjiang Patentee after: Goldeast Paper (Jiangsu) Co.,Ltd. Address before: Suzhou City, Jiangsu province 215126 Industrial Park Shengpu Kim Seung Road No. 2 Patentee before: GOLD HUASHENG PAPER (SUZHOU INDUSTRIAL PARK) Co.,Ltd. |