A kind of production technology of wrinkle cleansing tissueTechnical field
The present invention relates to a kind of paper product processing method, more particularly to a kind of production technology of wrinkle cleansing tissue, belong to papermaking,Paper product processes technical field.
Background technology
Wrinkle cleansing tissue is a kind of special type paper with high content of technology, high added value.Wrinkle cleansing tissue, grammes per square metre：15~45Gram/m.The existing country relies primarily on the external imports such as Japan, the U.S., performance characteristics：A mao dirt is not stayed after wiping；It is efficient to inhaleWater, oil absorption；Soft texture, does not hinder wiping surface；Wet epistasis is good, solvent resistance.Application scenario：Wipe eyeglass, camera lens, take the photographAs high-tech products such as head, optical glass component, precise electronic, microscope, mobile phone (computer) display screens, at present using importThe shortcomings of paper is primarily present the price height of paper, the delivery cycle is long.
The content of the invention
In order to fill up wrinkle cleansing tissue domestic production technological gap, domestic market requirement is met, emphasis solves to improve wrinkleThe fine and smooth stability of the flexibility of cleansing tissue, water imbibition, wrinkle, solvent resistance, the present invention provide a kind of production of wrinkle cleansing tissueTechnique.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of production technology of wrinkle cleansing tissue, the technique comprises the following steps：
A, pure wood pulp carry out mill mashing after hydrabrusher size degradation, and it is 3.5~4.0wt%, beating degree that concentration, which is made,18~20 ° of SR slurry；
B, ultrashort viscose fiber are mixed after being evacuated through fluffer with the slurry, obtain mixed slurry, and mixed slurry contains 80-95wt% wood pulps and 5-20wt% ultrashort viscose fibers, slurry concentration is 2.0-2.5wt%；
C, softening agent for paper, auxiliary agent and wet strength agent are added into slurry, mixed, through inclined wire papermaking wet end former wet method intoShape, squeezing and suction box are dehydrated, enter vat preliminary drying through carrying roller；
D, the body paper into vat are coated in big dryer surface, and spread requires control in 2~5g/m according to paper2In the range of, then wrinkled in dryer surface, group cylinder drying ornamenting, cooling are batched, rewind slitting, packaging and storage complete product lifeProduction.The process chart of the present invention is shown in Fig. 1.
Preferably, coating process is：Moisture control is between 45~60% when body paper enters drying cylinder coating, in drying cylinder tableFace is coated processing, and applicator roll is located at drying cylinder center, is selected during coating and 1- is added with papermaking Special emulsion, coating fluid2wt% hydrophilizing agents and 0.1-0.5% antiseized auxiliary agents, addition are counted using the quality of papermaking Special emulsion as 100%.Hydrophilizing agent andAntiseized auxiliary agent is used to prevent paper from gluing cylinder.
Preferably, Step d uses glass transition temperature to be coated to bear minus 40 DEG C of 15- anti-solvent latex.
Preferably, described pure wood pulp is the wooden wood pulp in Canada north.
Preferably, with the oven dry stock gauge of pure wood pulp, the consumption of softening agent for paper is 0.2~0.5wt%, wet strength agentConsumption is 0.4~0.6wt%, and described auxiliary agent is polyethylene glycol oxide, addition is calculated as 0.1 with the oven dry stock amount of pure wood pulp~0.3wt%.
Preferably, the vat preliminary drying uses the vat of diameter >=3 meter, two suspended hoods, upper suction are installed on vatFan housing is high speed hot blast Yankee gas hood, and lower suspended hood is plain type fan housing, and lower suspended hood is connected with air exhauster, and lower suspended hood is located atIt is to aim at dryer surface coating and install additional, suspended hood enters under being passed through when page enters drying cylinder through carrying roller between carrying roller and applicator rollRow exhausting is dried.
Preceding double of finished paper progress is predrying, and first of drying cylinder diameter of the invention must be more than etc. is coated with big dryer surfaceIn 3 meters, two suspended hoods are filled thereon, upper suspended hood is high speed hot blast Yankee gas hood, with contact drying and convective dryingPrinciple, high temperature and high speed hot blast makes the convection heat transfer' heat-transfer by convection of hot blast to paper generation quickly, while hot blast is vertically blown on paper, the sky on interfaceGas film is destroyed or lowered thickness, is greatly increased so as to conduct heat with mass tranfer coefficient, enhances evaporation, can greatly improve paper machineYield and cylinder dried efficiency, steam consumption are low；Lower suspended hood is plain type fan housing, without interlayer, but is had exclusively for its outfitAir exhauster, lower suspended hood be located between carrying roller and applicator roll, be aim at dryer surface coating and install additional, enter in page through carrying rollerWhen entering drying cylinder exhausting drying is carried out through lower suspended hood.
Preferably, when dryer surface wrinkles creping doctor Ceramics wrinkle Special scraper knife, with ensure wrinkle road it is evenOne stability, creping doctor installation site and scraper angle are adjusted according to paper requirement.
Preferably, the surface temperature of drier of vat is controlled at 110 DEG C ± 3.
Wrinkle cleansing tissue made from a kind of described production technology.
Addition appropriate softening agent for paper and polyethylene glycol oxide, is improved in preferred Canadian import pulp of the invention, slurryThe formation of sheet and pliability of body paper is made；The auxiliary agent polyethylene glycol oxide (PEO) that the present invention is added, be it is a kind of have it is water-soluble andThermoplastic non-ionic linear polymeric polymer, face shaping is white particles powder.With flocculation, thickening, sustained release,The performance such as lubrication, scattered, retention, water conservation, belongs to non-ionic, is influenceed relatively fewer by water quality and other addition auxiliary agents so thatThe ru nnability of paper pulp is stable, not easily broken paper and a paper powder, and biggest advantage is can to improve into the flexibility and the uniformity of paper.
The softening agent for paper HPS-1 that the present invention is selected is cationic surface active agent, is one end in molecule structureContaining long chain hydrocarbon groups, the other end contains the polarity that can be combined with fiber or the compound of reactive group.Soft agent molecule can beThe absorption of fiber surface formation hydrophobic group outwards, so as to reduce the kinematics and static friction factor of fibrous matter, obtains the hand of smooth, softSense.Softening agent HPS-1 is easier to be adsorbed on paper pulp fiber, and retention is high, easy to use.It with the addition of the appropriate paper softAgent, can not only make softization of paper, and tend to make between fiber easily sliding, soft and flexible, and enhancingTearing strength, and paper water imbibition can be improved.Its consumption is preferably 0.2~0.5% (by oven dry stock gauge).
The PAE wet strength agent for papermaking that the present invention is selected, is Polyamide Polyamine Epichlorohydrin Resin, and this product belongs to water-soluble cationic,Thermosetting resin.PAE can also increase dry strength to some extent in addition to it can increase paper wet strength performance, and can be asThe flocculant of small material is removed in the retention agents of filler in paper-making process, the filter aid and factory's running water that improve paper yield.This product is mainly characterized by easily being absorbed by fiber, and can be cured under neutral or basic conditions.It can be existed by paperHeat drying in paper-making process develops its wet epistasis energy with the method for storage.The major advantage of this product is that using effect is good,Consumption in oven dry stock weight 0.4~0.6%.PAE resin can give paper many valuable performances simultaneously, improve dimensionally stableProperty, intensity is improved, ink performance is absorbed good etc..Application method：Using it is preceding be diluted (be diluted to 5%) again can be used.
Inventor passes through the development of six wheat harvesting periods, it is found that the wrinkle cleansing tissue product quality of the present invention has met or exceeded stateOuter like product, specific quality index is as follows：It is quantitative：42g/ ㎡ ± 1, thickness：0.10~0.11mm, machine direction tensile strength：≥15N/cm, cross direction tensile strength：>=10N/cm, longitudinal wet is strong：>=3.3N/cm, longitudinal tensile strain rate：12% ± 1, water imbibition：76g/ ㎡ ± 5, moisture content：5.0-6.0%.
The beneficial effects of the invention are as follows：Emphasis of the present invention solves and improved wrinkle cleansing tissue papermaking quality, using big bakingCylinder surfaces are coated with, and improve the corrugation quality of paper product.Canadian import pulp brand, preferably optimal processing parameter are selected in slurrying,Addition ultrashort viscose fiber (the main pliability and water imbibition for improving body paper) in slurry；(mainly carried using Japanese import dispersantHigh formation of sheet)；Manufactured paper with pulp using inclined wire paper machine and (ensure sheet uniformity)；Enter during manufacturing paper with pulp in big dryer surfaceRow coating (mainly solve wrinkle cleansing tissue in wiping hair loss and solvent resistance, in big drying cylinder paper delivery use ceramic blade pairPaper is wrinkled (stability and sophistication that mainly solve corrugation wrinkle), is modified and cold on group cylinder after big drying cylinder corrugationBut (paper formation is mainly solved)；Production process is using DCS controls (ensureing each operation steady quality)；Applied in big dryer surfaceThe preferred high-quality latex of cloth (mainly ensures the pliability of paper, wipes the not performance such as hair loss and solvent resistance).
Brief description of the drawings
Fig. 1 is the process chart of the present invention.
Embodiment
Below by specific embodiment, technical scheme is described in further detail.It should be appreciated that this hairBright implementation is not limited to the following examples, and any formal accommodation and/or change made to the present invention will all fallEnter the scope of the present invention.
In the present invention, if not refering in particular to, all part, percentage are unit of weight, equipment and raw material for being used etc.It is commercially available or commonly used in the art.Method in following embodiments, is the normal of this area unless otherwise instructedRule method.
Wood pulp, the 100% pure wooden wood pulp in Canada north；
Wet strength agent, Hangzhou is big to reach Chemical Co., Ltd., model WD-805；
Papermaking Special emulsion is anti-solvent latex, Hangzhou Tian Hao Chemical Co., Ltd.s, model THF830；
Ultrashort viscose fiber, the friendly FCFC in Tangshan three, model 1.5D/6-SD-4A；
Hydrophilizing agent, Hangzhou Lv Dian Chemical Co., Ltd.s, model：LD-B1；
Antiseized auxiliary agent, Hangzhou Hanghua Harima Chemicals Co., Ltd., model SUR-4；
Softening agent for paper, Hangzhou Hanghua Harima Chemicals Co., Ltd., model HPS-1；
Dispersant (polyethylene glycol oxide), Sumitomo Seika Co., Ltd's (Japanese import), PEO-PFZblue.
Embodiment 1 (product specification 42g/ ㎡)：
A kind of production technology of wrinkle cleansing tissue, specifically includes following steps：
A, pure wood pulp carry out mill mashing after hydrabrusher size degradation, and it is 3.5~4.0wt%, beating degree that concentration, which is made,18~20 ° of SR slurry；
B, ultrashort viscose fiber are mixed after being evacuated through fluffer with the slurry, obtain mixed slurry, and mixed slurry contains80wt% wood pulps and 20wt% ultrashort viscose fibers, slurry concentration is 2.5wt%；
C, softening agent for paper, auxiliary agent and wet strength agent are added into slurry, mixed, through inclined wire papermaking wet end former wet method intoShape, squeezing and suction box are dehydrated, enter vat preliminary drying through carrying roller.Vat preliminary drying uses the vat of 3.5 meters of diameter, pacifies on vatTwo suspended hoods are filled, upper suspended hood is high speed hot blast Yankee gas hood, and lower suspended hood is plain type fan housing, and lower suspended hood, which is connected with, to be taken outBlower fan, lower suspended hood is located between carrying roller and applicator roll.
With the oven dry stock gauge of pure wood pulp, the consumption of softening agent for paper is 0.5wt%, and the consumption of wet strength agent is 0.4wt%,Described auxiliary agent is polyethylene glycol oxide, and addition is calculated as 0.3wt% with the oven dry stock amount of pure wood pulp.
D, the body paper into vat are coated in big dryer surface, and spread requires control in 2~5g/m according to paper2In the range of, coating process is：Body paper enters moisture control when drying cylinder is coated with and between 45~60%, is coated in dryer surfaceProcessing, surface temperature of drier control is at 110 DEG C ± 3, and applicator roll is located at drying cylinder center, and coating uses papermaking Special emulsion1wt% hydrophilizing agents and 0.5% antiseized auxiliary agent are added with (glass transition temperature is minus 15 DEG C), coating fluid, addition is with papermakingThe quality of Special emulsion is 100% meter.
Wrinkled after the completion of coating in dryer surface, when dryer surface wrinkles, the corrugation of creping doctor Ceramics is special scrapesKnife；Group cylinder drying ornamenting, cooling are batched, rewind slitting, packaging and storage completion production.
Gained note detection data are as follows：
It is quantitative：42.2g/ ㎡,
Thickness：0.109mm,
Machine direction tensile strength：18N/cm,
Cross direction tensile strength：13.5N/cm,
Longitudinal wet is strong：>=3.8N/cm,
Longitudinal tensile strain rate：12.5%,
Water imbibition：76.5g/ ㎡,
Moisture content：5.3%.
Products obtained therefrom is through examining：Sheet softness, formation of sheet, tensile strength, water absorbing properties, wet epistasis are good, solvent resistantProperty etc. be all higher than foreign paper, customer responsiveness is good.
Embodiment 2 (product specification 35g/ ㎡)：
A kind of production technology of wrinkle cleansing tissue, specifically includes following steps：
A, pure wood pulp carry out mill mashing after hydrabrusher size degradation, and it is 3.5~4.0wt%, beating degree that concentration, which is made,18~20 ° of SR slurry；
B, ultrashort viscose fiber are mixed after being evacuated through fluffer with the slurry, obtain mixed slurry, and mixed slurry contains85wt% wood pulps and 15wt% ultrashort viscose fibers, slurry concentration is 2.5wt%；
C, softening agent for paper, auxiliary agent and wet strength agent are added into slurry, mixed, through inclined wire papermaking wet end former wet method intoShape, squeezing and suction box are dehydrated, enter vat preliminary drying through carrying roller.Vat preliminary drying uses the vat of diameter >=3 meter, pacifies on vatTwo suspended hoods are filled, upper suspended hood is high speed hot blast Yankee gas hood, and lower suspended hood is plain type fan housing, and lower suspended hood, which is connected with, to be taken outBlower fan, lower suspended hood is located between carrying roller and applicator roll.
With the oven dry stock gauge of pure wood pulp, the consumption of softening agent for paper is 0.2wt%, and the consumption of wet strength agent is 0.6wt%,Described auxiliary agent is polyethylene glycol oxide, and addition is calculated as 0.1wt% with the oven dry stock amount of pure wood pulp.
D, the body paper into vat are coated in big dryer surface, and spread requires control in 2~5g/m according to paper2In the range of, coating process is：Body paper enters moisture control when drying cylinder is coated with and between 45~60%, is coated in dryer surfaceProcessing, surface temperature of drier control is at 110 DEG C ± 3, and applicator roll is located at drying cylinder center, and coating uses papermaking Special emulsion1wt% hydrophilizing agents and 0.3% antiseized auxiliary agent are added with (glass transition temperature is minus 15 DEG C), coating fluid, addition is with papermakingThe quality of Special emulsion is 100% meter.
Wrinkled after the completion of coating in dryer surface, when dryer surface wrinkles, the corrugation of creping doctor Ceramics is special scrapesKnife；Group cylinder drying ornamenting, cooling are batched, rewind slitting, packaging and storage completion production.
Gained note detection data are as follows：
It is quantitative：35.7g/ ㎡,
Thickness：0.091mm,
Machine direction tensile strength：16.5N/cm,
Cross direction tensile strength：12.5N/cm,
Longitudinal wet is strong：>=3.5N/cm,
Longitudinal tensile strain rate：12.6%,
Water imbibition：67.4g/ ㎡,
Moisture content：5.2%.
Products obtained therefrom is through examining：Sheet softness, formation of sheet, tensile strength, water absorbing properties, wet epistasis are good, solvent resistantProperty etc. be all higher than foreign paper, customer responsiveness is good.
Embodiment 3 (product specification 40g/ ㎡)：
A kind of production technology of wrinkle cleansing tissue, specifically includes following steps：
A, pure wood pulp carry out mill mashing after hydrabrusher size degradation, and it is 3.5~4.0wt%, beating degree that concentration, which is made,18~20 ° of SR slurry；
B, ultrashort viscose fiber are mixed after being evacuated through fluffer with the slurry, obtain mixed slurry, and mixed slurry contains95wt% wood pulps and 5wt% ultrashort viscose fibers, slurry concentration is 2.0wt%；
C, softening agent for paper, auxiliary agent and wet strength agent are added into slurry, mixed, through inclined wire papermaking wet end former wet method intoShape, squeezing and suction box are dehydrated, enter vat preliminary drying through carrying roller.Vat preliminary drying uses the vat of 3.5 meters of diameter, pacifies on vatTwo suspended hoods are filled, upper suspended hood is high speed hot blast Yankee gas hood, and lower suspended hood is plain type fan housing, and lower suspended hood, which is connected with, to be taken outBlower fan, lower suspended hood is located between carrying roller and applicator roll.
With the oven dry stock gauge of pure wood pulp, the consumption of softening agent for paper is 0.5wt%, and the consumption of wet strength agent is 0.4wt%,Described auxiliary agent is polyethylene glycol oxide, and addition is calculated as 0.3wt% with the oven dry stock amount of pure wood pulp.
D, the body paper into vat are coated in big dryer surface, and spread requires control in 2~5g/m according to paper2In the range of, coating process is：Body paper enters moisture control when drying cylinder is coated with and between 50~60%, is coated in dryer surfaceProcessing, surface temperature of drier control is at 110 DEG C ± 3, and applicator roll is located at drying cylinder center, and coating uses papermaking Special emulsion1wt% hydrophilizing agents and 0.5% antiseized auxiliary agent are added with (glass transition temperature is minus 15 DEG C), coating fluid, addition is with papermakingThe quality of Special emulsion is 100% meter.
Wrinkled after the completion of coating in dryer surface, when dryer surface wrinkles, the corrugation of creping doctor Ceramics is special scrapesKnife；Group cylinder drying ornamenting, cooling are batched, rewind slitting, packaging and storage completion production.
Gained note detection data are as follows：
It is quantitative：40.1g/ ㎡,
Thickness：0.105mm,
Machine direction tensile strength：17N/cm,
Cross direction tensile strength：14.5N/cm,
Longitudinal wet is strong：>=3.6N/cm,
Longitudinal tensile strain rate：12.8%,
Water imbibition：74.5g/ ㎡,
Moisture content：5.2%.
Products obtained therefrom is through examining：Sheet softness, formation of sheet, tensile strength, water absorbing properties, wet epistasis are good, solvent resistantProperty etc. be all higher than foreign paper, customer responsiveness is good.
Embodiment described above is a kind of preferably scheme of the present invention, not makees any formal to the present inventionLimitation, also has other variants and remodeling on the premise of without departing from the technical scheme described in claim.