CN104313934A - Moisture-proof highly-breathable non-woven wallpaper and preparation method thereof - Google Patents
Moisture-proof highly-breathable non-woven wallpaper and preparation method thereof Download PDFInfo
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- CN104313934A CN104313934A CN201410405875.XA CN201410405875A CN104313934A CN 104313934 A CN104313934 A CN 104313934A CN 201410405875 A CN201410405875 A CN 201410405875A CN 104313934 A CN104313934 A CN 104313934A
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H15/00—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution
- D21H15/02—Pulp or paper, comprising fibres or web-forming material characterised by features other than their chemical constitution characterised by configuration
- D21H15/10—Composite fibres
Abstract
The invention discloses a piece of moisture-proof highly-breathable non-woven wallpaper and a preparation method thereof. The method comprises the following steps: respectively placing waste fibers, plant fibers and chemical fibers into a first stock chest, a second stock chest and a third stock chest; adding a packing, a sizing agent and a wet strength agent; forming a non-woven wallpaper upper layer through the plant fibers; respectively placing mixed solutions in the three stock chests into fluffers to be defibered, respectively adding a retention aid into the stock chests filled with the mixed stock after defibering, uniformly stirring the mixtures, and then adopting the inclined wire processing technology to achieve layered stock intake; respectively feeding the three layers of stock into flow boxes, subjecting the stock to water filtration and retention on a forming wire to form a wet paper web, drying to obtain an upper layer of body paper, an intermediate layer of body paper and a lower layer of body paper, which are different from one another, coating paste starch among the body paper, adding a flame retardant, and then drying to obtain the moisture-proof highly-breathable non-woven wallpaper. The non-woven wallpaper has favorable air permeability, moisture resistance and fungus resistance, and is good in stability, resistant to impact, free of deformation and excellent in coverage.
Description
Technical field
The present invention relates to a kind of wallpaper, particularly relate to a kind of moisture resistance high-air-permeability nonwoven wallpaper and preparation method thereof, belong to field of papermaking processes.
Background technology
In the market, be made up of natural materials such as grass, wood, cotton, fiber crops, silks, through the wallpaper that modern crafts process is made, steadily capture the up-market of wallpaper with its superior performance, natural texture, the pattern style that is imbued with tension force.But once air is moister between spring and summer, body of wall tide rises after large or wallpaper is stained with water because of carelessness, makes wallpaper local size change, there is other forms of deformation, such as curling, gauffer and formation wave etc., of long duration easily send out delamination micro-, has a strong impact on wallpaper quality.Meanwhile, wallpaper is changed and is just bothered very much, obtains large area operation, original wallpaper must be peeled off metope, can cause no small infringement to metope.
For a long time, usual indoor ceiling and wall decoration wallpaper adopt paper as base material.The low price of this wallpaper, rich color, myoplasm sense is strong, pattern is gorgeous, environmental protection, easy construction, the features such as decorative effect elegant, be other multiple indoor ornament materials incomparable.But because this wallpaper is made up of wood pulp; have the characteristic of timber moisture expansion and drying shrinkage; performance is not stablize especially; again without fine and close protective layer; therefore, waterproof, anti-mildew, resistance to soiling, ABRASION RESISTANCE and clanability are very poor, and in wet environment, very easily variable color is gone rotten; be stained with greasy dirt and be difficult to cleaning later, thus have impact on decorative effect.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide a kind of and avoid that wallpaper is airtight, the nonwoven wallpaper of moisture resistance high-air-permeability that bubbles and go mouldy and preparation method thereof.
The object of the invention is achieved through the following technical solutions:
A preparation method for moisture resistance high-air-permeability nonwoven wallpaper, comprises the steps:
1) waste and old fibre, string and chemical fibre are put into the first stock tank, the second stock tank and the 3rd stock tank respectively; By the quality of each component of auxiliary agent in raw material self; First stock tank adds the 1/5-3/5 of filler; Second stock tank adds the 1/5-3/5 of filler, the 1/4-3/4 of sizing agent, the 1/4-3/4 of wet strength agent; 3rd stock tank adds the 1/5-3/5 of filler, the 1/4-3/4 of sizing agent, the 1/4-3/4 of wet strength agent; Described wet strength agent accounts for raw material gross mass 3%-7%, for alkaline thermal resin PPE, dialdehyde starch, formaldehyde resin, polymine and Ju Xian amine Duo An ?in epichlorohydrin resins at least two kinds; Described sizing agent is gum rosin, accounts for raw material gross mass 1%-4%; Described filler accounts for raw material gross mass 20%-30%, and by china clay and titanium dioxide, 1:1-5:1 is formulated in mass ratio;
Described waste and old fibre by account for raw material quality 10% ?15% needlebush give up fiber and account for raw material quality 4% ?15% Eucalyptus give up fibrous, composition nonwoven wallpaper middle level;
Described string by account for respectively material quality (3% ?16%), (0 ?3%), (0 ?3%), (0 ?3%) and (3% ?12%) needlebush, cotton fiber, flax fibre, birch fibers and Eucalyptus mix, composition nonwoven wallpaper upper strata; String comprises long fiber and staple fibre; Staple fibre is Eucalyptus Fibers and birch fibers; Long fiber is needlebush, cotton fiber and flax fibre; Long fiber and staple fibre mass ratio be 3:8 ?2: 1;
Described chemical fibre is mixed by terylene, polyamide fibre, acrylic fibers, polypropylene fibre, polyvinyl and the polyvinyl chloride fibre of (3% ?10%), (3% ?5%), (3% ?8%), (1% ?7.5%), (0 ?2%) and (0 ?2%) that accounts for material quality respectively, composition nonwoven wallpaper lower floor;
2) mixed liquor in the first stock tank, the second stock tank and the 3rd stock tank is placed in fluffer respectively discongests, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds the 1/6-2/3 of retention agent, second stock tank adds the 1/6-2/3 of retention agent, 3rd stock tank adds the 1/6-2/3 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering; Described retention agent accounts for raw material gross mass 0.1%-0.5%, is polymine, one or more in polyacrylamide and cationic polyacrylamide;
3) by step 2) resulting three-layer paper pulp is sent to head box respectively, then make paper pulp on forming web drainage, keep and form wet web, through squeezing, l Water Paper is further dehydrated, until outlet web dryness is 45%-56%, obtain the body paper that upper, middle and lower-ranking is different;
4) in upper strata and middle level, coat gelatinized starch between middle level and the body paper of lower floor, then through squeezing; Described gelatinized starch accounts for raw material gross mass 1%-4%;
5) fire retardant is placed on the hot water that temperature is 60 DEG C-90 DEG C, the mass concentration controlling fire retardant is 3%-10%, makes the aqueous solution or aqueous dispersions, body paper after squeezing is flooded, again dry, the shaping rewinding of last press polish, obtains moisture resistance high-air-permeability nonwoven wallpaper; Described fire retardant accounts for raw material gross mass 2%-5.5%.
Preferably, step 3) described squeezing Stress control 0.15MPa ?0.3MPa, temperature be 90 DEG C ?120 DEG C; Step 4) Stress control of described squeezing is 0.5MPa-3MPa, temperature is 90 DEG C-115 DEG C.
The time of described dipping is 10min-30min.
Step 4) and step 5) temperature of described drying is 90 DEG C-120 DEG C.
Described fire retardant is one or more in melamine, urea and melamine phosphate.
Described long stapled shearing length be 160mm ?190mm, the cut staple of described staple fibre be 45mm ?75mm.
Beating degree 20.5 ° of SR of described Eucalyptus ?23 ° of SR; Beating degree 20 ° of SR of described needlebush ?23 ° of SR; Eucalyptus give up slurry beating degree be 20.5 ° of SR ?23 ° of SR; Needlebush give up slurry beating degree 20 ° of SR ?23 ° of S.
Described chemical fibre is not pulled an oar, and controls the mesh number of the head box in sheet forming process more than slurry number.
A kind of moisture resistance high-air-permeability nonwoven wallpaper, obtained by above-mentioned preparation method, its air permeability is 11L/ (m
2s)-16L/ (m
2s), tensile strength is 1000N/m-2800N/m, tearing strength is 800mN-1785mN, bursting strength is 68-225KPa.Further, the Cobb value of its thickness to be the wet strength of 0.245mm-0.282mm, 1h be 294N/m-787N/m, 60s is 75g/m
2-219g/m
2, front opacity is 94.90%-98.01%, reverse side opacity is 95.01%-98.58%, front whiteness is 80.12%-84.04%, reverse side whiteness 80.26%-83.12%.
Wet strength agent of the present invention can by alkaline thermal resin PPE, dialdehyde starch, formaldehyde resin, polymine and Ju Xian amine Duo An ?epichlorohydrin resins according to 0:0:1:1:0 ?1:2:2:2:1 mass ratio configure; Retention agent of the present invention can according to polymine: polyacrylamide: the mass ratio of cationic polyacrylamide is 0:0:0-2:2:1 preparation.
The present invention is with the mass percent of raw material, and described upper strata string accounts for 18%-35%, and the middle level fiber that gives up accounts for 15%-25%, and lower floor's chemical fibre accounts for 18%-25%, and chemical assistant accounts for 30%-45%; Described fire retardant is mainly nitrogenated flame retardant.
Relative to prior art, tool of the present invention has the following advantages:
1) the present invention adopt the string of different proportion prepare burden and use appropriate additive, thus avoid wallpaper airtight, bubble, go mouldy and admix the bad phenomenon such as spot, make it that there is gas permeability, ABRASION RESISTANCE and clanability.
2) the present invention to manufacture paper with pulp moisture resistance high air permeability non-woven wallpaper by suitable long and short fiber proportioning, and long fiber pulp gives nonwoven wallpaper enough intensity, and short fibered pulp is then larger on the impact of feel especially pliability; The long and short fiber quality proportioning of the present invention is 3: 8-2:1, and wherein, staple fibre shearing length is generally 25 ~ 100mm, and long fiber shearing length is greater than 150mm; Be ferreted out intensity high, uniform high-grade nonwoven wallpaper, moisture resistance is high, good permeability, and pliable and tough comfortable.
3) compared with other wallpapers, moisture resistance high air permeability non-woven wallpaper but has natural advantage in clanability; Cleaning can not cause any infringement to metope;
4) for wall decoration, moisture resistance high air permeability non-woven wallpaper all right " self-cleaning ", not easily dirty and easily clean, but general nonwoven wallpaper water resistant ability is not fine, if some fillers, coating and Cypres etc. can be added in nonwoven wallpaper, nonwoven wallpaper not alice, not bubble when moist or infiltration water can be made, not stratified, and have splendid decoration and artistic effect.
5) due to decoration paper that wallpaper is metope, in order to page distortion after preventing water suction moisture regain, intensity reduce or easily goes mouldy rotten etc., body paper must have good gas permeability, good shape stability and fungus-proof antisepsis performance, also needs good fire protecting performance as distinguishing products.
Detailed description of the invention
For understanding the present invention better, contrast the present invention below in conjunction with embodiment and be further described, but embodiments of the present invention not being limit so.
Below in embodiment, the body paper upper, middle and lower-ranking of moisture resistance high-air-permeability nonwoven wallpaper can once be manufactured paper with pulp acquisition; Be wherein lower floor for pasting wall position; Position in contact chamber is upper strata; It is middle level between lower floor and upper strata; Body paper pastes wall position and is mainly adopted as chemical fibre, and can improve air permeability, the position in contact chamber mainly adopts string, can improve pliability, and middle level mainly adopts waste and old fiber separation, like this can be cost-saving, makes rational use of resources again.Embodiment middle short fiber is Eucalyptus Fibers or birch fibers; Long fiber is one or more in needlebush, cotton fiber and flax fibre; Cotton fiber, flax fibre and birch fibers provide primarily of Jiangxi China strength paper industry.
Embodiment 1
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is softwood pulp (3%), cotton fiber (3%), flax fibre (1.5%), birch fibers (1.5%) and eucalyptus pulp (9%) mix; Middle level is that give up fiber (13.5%) and Eucalyptus of needlebush gives up fiber (10.5%); Lower floor is terylene (6%), polyamide fibre (4.5%), acrylic fibers (3%) and polypropylene fibre (4.5%).Upper lower floor three layers and account for 60% of raw material gross mass in this slurry, then chemical assistant accounts for 40%;
In the slurry of upper strata, fiber comprises long fiber and staple fibre; Staple fibre is Eucalyptus Fibers and birch fibers; Long fiber is needlebush, cotton fiber and flax fibre; Long and short fiber quality proportioning is 1: 1, long stapled shearing length is controlled at about 160mm in pulping process, the cut staple of staple fibre is at about 75mm, fibre classifier is adopted to distinguish long and short fiber, flow out in 200 object mesh sieve for staple fibre, then what select from 100 object mesh sieve is long fiber; Eucalyptus beating degree 23 ° of SR are recorded respectively with Shore Schooper-Riegler beating degree tester, needlebush beating degree 21.5 ° of SR after adopting shiny beating; Wherein cotton fiber, flax fibre and birch fibers provide primarily of Jiangxi China strength paper industry.
Middle layer slurry records Eucalyptus useless slurry beating degree 22.5 ° of SR after adopting shiny beating, needlebush useless slurry beating degree 22 ° of SR; Middle layer slurry adopts waste and old fibre stuff.
The fiber of lower floor's slurry is terylene, polyamide fibre, acrylic fibers and polypropylene fibre; Lower floor's chemical fibre is not pulled an oar, control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wadding is poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber simultaneously.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 7%, by alkaline thermal resin PPE, dialdehyde starch, formaldehyde resin, polymine and Ju Xian amine Duo An ?epichlorohydrin resins formulated according to 1:1:1:1:1 mass ratio;
Filler accounts for raw material gross mass 20%, presses 3:1 mass ratio formulated by china clay and titanium dioxide;
Fire retardant (melamine) accounts for raw material gross mass 5%;
Sizing agent (gum rosin) accounts for raw material gross mass 4%;
Gelatinized starch (being used as adhesive) accounts for raw material gross mass 3.9%;
Retention agent (polymine) accounts for raw material gross mass 0.1%.
It should be noted that, above-mentioned raw materials paper pulp part is according to slurry feedstock OD wt. basis.Raw material does not comprise water.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); The quality of each component of the auxiliary agent defined by raw material self; First stock tank adds 1/5 of filler; Second stock tank adds 1/5 of filler, 1/2 of sizing agent, 1/2 of wet strength agent; 3rd stock tank adds 3/5 of filler, 1/2 of sizing agent, 1/2 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 1/3 of retention agent, second stock tank adds 1/6 of retention agent, 3rd stock tank adds 1/2 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.15MPa, temperature is 105 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 56%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 1MPa again, temperature is 105 DEG C), finally fire retardant is placed on hot water (60 DEG C, concentration is 5%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 15min), again dry (baking temperature is 120 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index recording the paper that the present embodiment is copied is as follows: adopt air permeability instrument (Sweden, L & W166) its air permeability 15.79L/ (m
2s), adopt Thickness measuring instrument (Sweden, L & W250) measure thickness 0.251mm, adopt paper tensile strength instrument (Sweden, L & WCE062) to measure tensile strength be 1000N/m, adopt finch wet strength device finch (domestic, YQ-Z-16) its wet strength (1h) 294.3N/m is measured, adopt paper tear degree analyzer (domestic, YQ-Z-20) tearing strength 800mN is measured, adopt paper burst tester (Sweden, L & W) measure bursting strength 68KPa, adopt COBB water imbibition analyzer (Spain, T-2852) its Cobb value (60s) 177g/m is measured
2, adopt paper optical property analyzer (U.S., MTCRO-TB-IC) to measure its front opacity 94.90%, reverse side opacity 95.22%, front whiteness 81.31% and reverse side whiteness 81.57% respectively.
Tester in following examples is all identical with embodiment 1.
Embodiment 2
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is softwood pulp (16%), eucalyptus pulp (3%), birch fibers (3%), cotton fiber (3%) and flax fibre (3%) mix; Middle level is the useless slurry (14%) of needlebush and the useless slurry (9%) of Eucalyptus; Lower floor is terylene (5%), polyamide fibre (3%), acrylic fibers (5%), polyvinyl (1.5%), polyvinyl chloride fibre (1.5%) and polypropylene fibre (3%).Upper lower floor three layers and account for 70% of total amount in this slurry, then chemical assistant accounts for 30% of total amount;
Upper strata slurry records Eucalyptus beating degree 20.5 ° of SR respectively with Shore Schooper-Riegler beating degree tester after adopting free type making beating, needlebush beating degree 21 ° of SR, long and short fiber quality is than being 2:1, and control long stapled shearing length in pulping process at about 170mm, the cut staple of staple fibre is at about 70mm.Middle level records Eucalyptus useless slurry beating degree 21 ° of SR after adopting free type making beating, needlebush useless slurry beating degree 20 ° of SR, lower floor's chemical fibre is not pulled an oar, but control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wad a quilt with cotton poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber simultaneously.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 3%, and by formaldehyde resin and polymine, 1:1 is formulated in mass ratio;
Filler accounts for raw material gross mass 20%, and by china clay and titanium dioxide, 5:1 is formulated in mass ratio;
Fire retardant accounts for raw material gross mass 2%, and by melamine and urea, 1:1 is formulated in mass ratio;
Sizing agent (gum rosin) accounts for raw material gross mass 2%;
Starch (being used as adhesive) accounts for raw material gross mass 2.5%;
Retention agent accounts for raw material gross mass 0.5%, and by CPAM and PAM, 1:1 is formulated in mass ratio.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); First stock tank adds 3/5 of filler; Second stock tank adds 1/5 of filler, 1/3 of sizing agent, 1/4 of wet strength agent; 3rd stock tank adds 1/5 of filler, 2/3 of sizing agent, 3/4 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 1/6 of retention agent, second stock tank adds 1/3 of retention agent, 3rd stock tank adds 1/2 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.3MPa, temperature is 85 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 50%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 3MPa again, temperature is 95 DEG C), finally fire retardant is placed on hot water (65 DEG C, concentration is 3%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 10min), again dry (baking temperature is 90 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index of the paper copied under recording this condition is as follows: its air permeability 11.05L/ (m
2s), thickness 0.284mm, tensile strength 1699N/m, wet strength (1h) 767.3N/m, tearing strength 1785mN, bursting strength 167KPa, Cobb value (60s) 185g/m
2, front opacity 98.01%, reverse side opacity 98.58%, front whiteness 80.82%, reverse side whiteness 80.89%.
Embodiment 3
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is that softwood pulp (8%) and eucalyptus pulp (12%) mix; Middle level is the useless slurry (11%) of needlebush and the useless slurry (4%) of Eucalyptus; Lower floor is terylene (6%), polyamide fibre (5%), acrylic fibers (5%), polyvinyl (1.5%), polyvinyl chloride fibre (1.5%) and polypropylene fibre (1%).Upper lower floor three layers and account for 55% of total amount in this slurry, then chemical assistant accounts for 45% of total amount;
Upper strata records Eucalyptus beating degree 21 ° of SR after adopting free type making beating, needlebush beating degree 20 ° of SR, control long in pulping process, staple fibre quality proportioning is 5:8, long stapled shearing length is at about 180mm, the cut staple of staple fibre is at about 65mm, middle level records Eucalyptus useless slurry beating degree 21.5 ° of SR after adopting shiny beating, needlebush useless slurry beating degree 20.5 ° of SR, lower floor's chemical fibre is not pulled an oar, but control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wad a quilt with cotton poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed simultaneously, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 5%, by dialdehyde starch and Ju Xian amine Duo An ?the proportions of epichlorohydrin resins 2:1 in mass ratio form;
Filler accounts for raw material gross mass 30%, and by china clay and titanium dioxide, 5:1 is formulated in mass ratio;
Fire retardant accounts for raw material gross mass 5%, by melamine phosphate and melamine 1:1 preparation in mass ratio;
Sizing agent (gum rosin) accounts for raw material gross mass 3.3%;
Starch (being used as adhesive) accounts for raw material gross mass 1.6%;
Retention agent (polymine) accounts for raw material gross mass 0.1%.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); First stock tank adds 1/5 of filler; Second stock tank adds 3/5 of filler, 1/4 of sizing agent, 3/4 of wet strength agent; 3rd stock tank adds 1/5 of filler, 3/4 of sizing agent, 1/4 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 1/2 of retention agent, second stock tank adds 1/3 of retention agent, 3rd stock tank adds 1/6 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.15MPa, temperature is 110 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 56%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 0.5MPa again, temperature is 115 DEG C), finally fire retardant is placed on hot water (70 DEG C, concentration is 4%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 20min), again dry (baking temperature is 105 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index of the paper copied under recording this condition is as follows: levels is quantitatively respectively 67g/m
2and 65g/m
2, its air permeability 11.94L/ (m
2s), thickness 0.274mm, tensile strength 2800N/m, wet strength (1h) 787N/m, tearing strength 1741mN, bursting strength 135KPa, Cobb value (60s) 182g/m
2, front opacity 96.98%, reverse side opacity 95.01%, front whiteness 80.69%, reverse side whiteness 80.71%.
Embodiment 4
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is softwood pulp (5%), eucalyptus pulp (3%), birch fibers (3%), cotton fiber (3%), flax fibre (1.5%) mix; Middle level is the useless slurry (10%) of needlebush and the useless slurry (15%) of Eucalyptus; Lower floor is terylene (10%), polyamide fibre (5%), acrylic fibers (3%) and polypropylene fibre (1.5%).Upper lower floor three layers and account for 60% of total amount in this slurry, then chemical assistant accounts for 40% of total amount;
Upper strata records Eucalyptus beating degree 23 ° of SR after adopting shiny beating, needlebush beating degree 23 ° of SR, middle level records Eucalyptus useless slurry beating degree 22.5 ° of SR after adopting shiny beating, needlebush useless slurry beating degree 22.5 ° of SR, control long in pulping process, staple fibre quality proportioning is 1: 1, long stapled shearing length is at about 190mm, the cut staple of staple fibre is at about 45mm, lower floor's chemical fibre is not pulled an oar, but control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wad a quilt with cotton poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed simultaneously, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 5%, by formaldehyde resin, polymine alkalescence, thermal resin PPE and Ju Xian amine Duo An ?the proportions of epichlorohydrin resins 1:1:1:1 in mass ratio form;
Filler accounts for raw material gross mass 25%, by china clay and titanium dioxide 3:1 configuration in mass ratio;
Fire retardant (melamine phosphate) accounts for raw material gross mass 5%;
Sizing agent (gum rosin) accounts for raw material gross mass 3%;
Starch (being used as adhesive) accounts for raw material gross mass 1.5%;
Retention agent (polymine) accounts for raw material gross mass 0.5%.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); First stock tank adds 1/4 of filler; Second stock tank adds 1/2 of filler, 1/2 of sizing agent, 1/4 of wet strength agent; 3rd stock tank adds 1/4 of filler, 1/2 of sizing agent, 3/4 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 2/3 of retention agent, second stock tank adds 1/6 of retention agent, 3rd stock tank adds 1/6 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.15MPa, temperature is 90 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 45%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 0.6MPa again, temperature is 105 DEG C), finally fire retardant is placed on hot water (80 DEG C, concentration is 10%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 30min), again dry (baking temperature is 120 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index of the paper copied under recording this condition is as follows: levels is quantitatively respectively 65g/m
2and 65g/m
2, its air permeability 12.96L/ (m
2s), thickness 0.275mm, tensile strength 1433N/m, wet strength (1h) 534.2N/m, tearing strength 1116mN, bursting strength 87KPa, Cobb value (60s) 214g/m
2, front opacity 97.21%, reverse side opacity 97.11%, front whiteness 84.04%, reverse side whiteness 83.12%.
Embodiment 5
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is softwood pulp (6%), eucalyptus pulp (6%), birch fibers (2%), cotton fiber (3%) and flax fibre (3%) mix; Middle level is the useless slurry (13%) of needlebush and the useless slurry (12%) of Eucalyptus; Lower floor is terylene (3%), polyamide fibre (3%), acrylic fibers (3%), polyvinyl (2%), polyvinyl chloride fibre (1.5%) and polypropylene fibre (7.5%).Upper lower floor three layers and account for 65% of total amount in this slurry, then chemical assistant accounts for 35% of total amount;
It records Eucalyptus beating degree 21 ° of SR after adopting free type to pull an oar at the middle and upper levels, needlebush beating degree 21.5 ° of SR, middle level records Eucalyptus useless slurry beating degree 23 ° of SR after adopting shiny beating, needlebush useless slurry beating degree 23 ° of SR, control long in pulping process, staple fibre quality proportioning is 3: 2, long stapled shearing length is at about 160mm, the cut staple of staple fibre is at about 55mm, lower floor's chemical fibre is not pulled an oar, but control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wad a quilt with cotton poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed simultaneously, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 5%, by alkaline thermal resin PPE, dialdehyde starch and Ju Xian amine Duo An ?the proportions of epichlorohydrin resins 2:1:1 in mass ratio form;
Filler accounts for raw material gross mass 20%, by china clay and titanium dioxide 2:1 configuration in mass ratio;
Fire retardant accounts for raw material gross mass 5.5%, by melamine and urea 4:1 configuration in mass ratio;
Sizing agent (gum rosin) accounts for raw material gross mass 3%;
Starch (being used as adhesive) accounts for raw material gross mass 1.4%;
Retention agent (CPAM:PAM=2:1) accounts for raw material gross mass 0.1%.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); First stock tank adds 1/2 of filler; Second stock tank adds 1/4 of filler, 1/4 of sizing agent, 1/2 of wet strength agent; 3rd stock tank adds 1/4 of filler, 3/4 of sizing agent, 1/2 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 1/6 of retention agent, second stock tank adds 2/3 of retention agent, 3rd stock tank adds 1/6 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.15MPa, temperature is 120 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 50%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 2MPa again, temperature is 90 DEG C), finally fire retardant is placed on hot water (85 DEG C, concentration is 10%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 30min), again dry (baking temperature is 110 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index of the paper copied under recording this condition is as follows: its air permeability 14.11L/ (m
2s), thickness 0.245mm, tensile strength 2615N/m, wet strength (1h) 553.8N/m, tearing strength 1167mN, bursting strength 225KPa, Cobb value (60s) 219g/m
2, front opacity 95.12%, reverse side opacity 95.53%, front whiteness 83.27%, reverse side whiteness 82.17%.
Embodiment 6
A kind of pulp furnish of nonwoven wallpaper and process conditions:
With the mass percent of raw material, wet end furnish: upper strata is that softwood pulp (10%) and eucalyptus pulp (10%) mix; Middle level is the useless slurry (15%) of needlebush and the useless slurry (8%) of Eucalyptus; Lower floor is terylene (5%), polyamide fibre (5%), acrylic fibers (8%) and polypropylene fibre (4%).Upper lower floor three layers and account for 65% of total amount in this slurry, then chemical assistant accounts for 35% of total amount;
It records Eucalyptus beating degree 21 ° of SR after adopting shiny beating at the middle and upper levels, needlebush beating degree 22.5 ° of SR, middle level records Eucalyptus useless slurry beating degree 22.5 ° of SR after adopting shiny beating, needlebush useless slurry beating degree 21 ° of SR, control long in pulping process, staple fibre quality proportioning is 7: 6, long stapled shearing length is at about 175mm, the cut staple of staple fibre is at about 50mm, lower floor's chemical fibre is not pulled an oar, but control the mesh number of the head box in sheet forming process more than slurry number, head box produces high strength microturbulent motion, can loosen collagen fibre effectively, impel fiber longitudinal arrangement, prevent fiber from precipitating and wad a quilt with cotton poly-again, make the longitudinal paper stock that distributes equably of paper machine, guarantee that slurry speed is coordinated mutually with network speed simultaneously, whitewashing is stable, effectively can increase the longitudinal arrangement of fiber.
The proportioning of auxiliary agent:
Wet strength agent accounts for raw material gross mass 3%, is formed by the proportions of formaldehyde resin and polymine 3:1 in mass ratio;
Filler accounts for raw material gross mass 22%, by china clay and titanium dioxide 4:1 configuration in mass ratio;
Fire retardant accounts for raw material gross mass 5%, by melamine phosphate and urea 2:1 configuration in mass ratio;
Sizing agent (gum rosin) accounts for raw material gross mass 3.5%;
Starch (being used as adhesive) accounts for raw material gross mass 1%;
Retention agent (polymine) accounts for raw material gross mass 0.5%.
Preparation method:
String after waste and old fibre, screening and chemical fibre are put into the first stock tank respectively and (waste and old fibre is housed, middle level to be copied into paper), the second stock tank (is equipped with string, upper paper to be copied into) and the 3rd stock tank in (chemical fibre being housed, lower floor to be copied into paper); First stock tank adds 1/4 of filler; Second stock tank adds 1/4 of filler, 1/4 of sizing agent, 1/4 of wet strength agent; 3rd stock tank adds 1/2 of filler, 3/4 of sizing agent, 3/4 of wet strength agent.
By the first stock tank, in second stock tank and the 3rd stock tank, mixed liquor to be placed in three fluffers 5000 turns respectively and to discongest, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds 1/6 of retention agent, second stock tank adds 1/6 of retention agent, 3rd stock tank adds 2/3 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering, paper pulp is sent to head box by the evenness and the pliability that improve l Water Paper, then paper stock drainage on forming web is made, keep and form wet web, through press section, (pressure is 0.4MPa, temperature is 100 DEG C) l Water Paper is further dehydrated, until outlet web dryness is about 45%, must go up, in, lower three layers of different body paper, in upper strata and middle level, gelatinized starch is coated between middle level and lower floor, through press section, (pressure is about 2.5MPa again, temperature is 105 DEG C), finally fire retardant is placed on hot water (90 DEG C, concentration is 8%) in make the aqueous solution or aqueous dispersions (dipping after squeezing flooded to described body paper, dip time is 10min), again dry (baking temperature is 105 DEG C), the shaping rewinding of last press polish, obtain moisture resistance high-air-permeability nonwoven wallpaper.
The physical index of the paper copied under recording this condition is as follows: its air permeability 12.82L/ (m
2s), thickness 0.282mm, tensile strength 1546N/m, wet strength (1h) 570.8N/m, tearing strength 1251mN, bursting strength 129KPa, Cobb value (60s) 176g/m
2, front opacity 96.93%, reverse side opacity 98.16%, front whiteness 80.12%, reverse side whiteness 80.26%.
Paper physical index is become from surveyed nonwoven wallpaper, this finished product has the features such as high strength, good permeability and water resistance strong (anti-mildew), and paper fiber third dimension is strong, one at the bottom of multilayer moisture resistance high air permeability non-woven wallpaper table, directly can adopt the advanced technologies of stamp chromatography, abundanter than fabric side wallpaper pattern.The present invention can obtain such effect, and with the wet end furnish adopted, especially three-decker raw material is configured with close relationship, and controls there is certain correlation with the selection of long and short fiber with making beating mode; During wallpaper makes, under wet pressing, dry temperature and pressure and the layering in later stage also have larger impact to the quality of nonwoven wallpaper.
It should be noted that, everyly do not depart from technical solution of the present invention content and on technical scheme, do simple modification and distortion, all belong to the protection domain of this patent.
Claims (10)
1. a preparation method for moisture resistance high-air-permeability nonwoven wallpaper, is characterized in that comprising the steps:
1) waste and old fibre, string and chemical fibre are put into the first stock tank, the second stock tank and the 3rd stock tank respectively; By the quality of each component of auxiliary agent in raw material self; First stock tank adds the 1/5-3/5 of filler; Second stock tank adds the 1/5-3/5 of filler, the 1/4-3/4 of sizing agent, the 1/4-3/4 of wet strength agent; 3rd stock tank adds the 1/5-3/5 of filler, the 1/4-3/4 of sizing agent, the 1/4-3/4 of wet strength agent; Described wet strength agent accounts for raw material gross mass 3%-7%, for alkaline thermal resin PPE, dialdehyde starch, formaldehyde resin, polymine and Ju Xian amine Duo An ?in epichlorohydrin resins at least two kinds; Described sizing agent is gum rosin, accounts for raw material gross mass 1%-4%; Described filler accounts for raw material gross mass 20%-30%, and by china clay and titanium dioxide, 1:1-5:1 is formulated in mass ratio;
Described waste and old fibre by account for raw material quality 10% ?15% needlebush give up fiber and account for raw material quality 4% ?15% Eucalyptus give up fibrous, composition nonwoven wallpaper middle level;
Described string by account for respectively material quality (3% ?16%), (0 ?3%), (0 ?3%), (0 ?3%) and (3% ?12%) needlebush, cotton fiber, flax fibre, birch fibers and Eucalyptus mix, composition nonwoven wallpaper upper strata; String comprises long fiber and staple fibre; Staple fibre is Eucalyptus Fibers and birch fibers; Long fiber is needlebush, cotton fiber and flax fibre; Long fiber and staple fibre mass ratio be 3:8 ?2: 1;
Described chemical fibre is mixed by terylene, polyamide fibre, acrylic fibers, polypropylene fibre, polyvinyl and the polyvinyl chloride fibre of (3% ?10%), (3% ?5%), (3% ?8%), (1% ?7.5%), (0 ?2%) and (0 ?2%) that accounts for material quality respectively, composition nonwoven wallpaper lower floor;
2) mixed liquor in the first stock tank, the second stock tank and the 3rd stock tank is placed in fluffer respectively discongests, be equipped with in the stock tank of mixed slurry at three after discongesting and add retention agent respectively, first stock tank adds the 1/6-2/3 of retention agent, second stock tank adds the 1/6-2/3 of retention agent, 3rd stock tank adds the 1/6-2/3 of retention agent, after stirring, adopt oblique net process technology, slurry is entered in layering; Described retention agent accounts for raw material gross mass 0.1%-0.5%, is polymine, one or more in polyacrylamide and cationic polyacrylamide;
3) by step 2) resulting three-layer paper pulp is sent to head box respectively, then make paper pulp on forming web drainage, keep and form wet web, through squeezing, l Water Paper is further dehydrated, until outlet web dryness is 45%-56%, obtain the body paper that upper, middle and lower-ranking is different;
4) in upper strata and middle level, coat gelatinized starch between middle level and the body paper of lower floor, then through squeezing; Described gelatinized starch accounts for raw material gross mass 1%-4%;
5) fire retardant is placed on the hot water that temperature is 60 DEG C-90 DEG C, the mass concentration controlling fire retardant is 3%-10%, makes the aqueous solution or aqueous dispersions, body paper after squeezing is flooded, again dry, the shaping rewinding of last press polish, obtains moisture resistance high-air-permeability nonwoven wallpaper; Described fire retardant accounts for raw material gross mass 2%-5.5%.
2. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, step 3) Stress control of described squeezing 0.15MPa ?0.3MPa, temperature be 90 DEG C ?120 DEG C; Step 4) Stress control of described squeezing is 0.5MPa-3MPa, temperature is 90 DEG C-115 DEG C.
3. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, the time of described dipping is 10min-30min.
4. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, step 4) and step 5) temperature of described drying is 90 DEG C-120 DEG C.
5. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, described fire retardant is one or more in melamine, urea and melamine phosphate.
6. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, described long stapled shearing length be 160mm ?190mm, the cut staple of described staple fibre be 45mm ?75mm.
7. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, is characterized in that, beating degree 20.5 ° of SR of described Eucalyptus ?23 ° of SR; Beating degree 20 ° of SR of described needlebush ?23 ° of SR; Eucalyptus give up slurry beating degree be 20.5 ° of SR ?23 ° of SR; Needlebush give up slurry beating degree 20 ° of SR ?23 ° of S.
8. the preparation method of moisture resistance high-air-permeability nonwoven wallpaper according to claim 1, it is characterized in that, described chemical fibre is not pulled an oar, and controls the mesh number of the head box in sheet forming process more than slurry number.
9. a moisture resistance high-air-permeability nonwoven wallpaper, it is characterized in that it is obtained by preparation method described in any one of claim 1 ?9, its air permeability is 11L/ (m
2s)-16L/ (m
2s), tensile strength is 1000N/m-2800N/m, tearing strength is 800mN-1785mN, bursting strength is 68-225KPa.
10. moisture resistance high-air-permeability nonwoven wallpaper according to claim 9, is characterized in that, the Cobb value of its thickness to be the wet strength of 0.245mm-0.282mm, 1h be 294N/m-787N/m, 60s is 75g/m
2-219g/m
2, front opacity is 94.90%-98.01%, reverse side opacity is 95.01%-98.58%, front whiteness is 80.12%-84.04%, reverse side whiteness 80.26%-83.12%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104695276A (en) * | 2015-02-28 | 2015-06-10 | 江苏高科物流科技股份有限公司 | Efficient papermaking method |
| CN105178092A (en) * | 2015-08-14 | 2015-12-23 | 桂林威迈壁纸有限公司 | Flame-retardation wall paper base paper and manufacturing method therefor |
| CN111549554A (en) * | 2020-05-19 | 2020-08-18 | 易立科技通山有限公司 | High-air-permeability light medical protection special paper and manufacturing method thereof |
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| CN104695276A (en) * | 2015-02-28 | 2015-06-10 | 江苏高科物流科技股份有限公司 | Efficient papermaking method |
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| CN111549554A (en) * | 2020-05-19 | 2020-08-18 | 易立科技通山有限公司 | High-air-permeability light medical protection special paper and manufacturing method thereof |
| CN111549554B (en) * | 2020-05-19 | 2021-03-30 | 易立科技通山有限公司 | High-air-permeability light medical protection special paper and manufacturing method thereof |
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