CN105492671A - Polyolefin based nonwoven fabrics comprising calcium carbonate, and preparation method therefor - Google Patents
Polyolefin based nonwoven fabrics comprising calcium carbonate, and preparation method therefor Download PDFInfo
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- CN105492671A CN105492671A CN201380079312.XA CN201380079312A CN105492671A CN 105492671 A CN105492671 A CN 105492671A CN 201380079312 A CN201380079312 A CN 201380079312A CN 105492671 A CN105492671 A CN 105492671A
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- calcium carbonate
- nonwoven fabric
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
- D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F11/00—Compounds of calcium, strontium, or barium
- C01F11/18—Carbonates
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Nonwoven Fabrics (AREA)
- Artificial Filaments (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Multicomponent Fibers (AREA)
Abstract
The present invention relates to polyolefin based nonwoven fabrics comprising calcium carbonate, and a preparation method therefor. The preparation method, of the present invention, for the polyolefin based nonwoven fabrics comprising calcium carbonate corresponds to a method for preparing nonwoven fabrics by spinning and drawing a complex melt consisting of a polyolefin based resin and calcium carbonate, wherein the calcium carbonate, corresponding to a precipitated calcium carbonate, is produced by: eluting calcium ions by injecting an additive for calcium ion elution into a lime based by-product solution and, after elution, injecting a precipitating agent so as to sink the lime based by-product and thus separate an eluate from the by-product; thereafter, improving the reaction rate of the eluate and carbon dioxide by insufflating carbon dioxide in the course of transferring the eluate to a reaction tank; and maintaining, at all times, the concentration of calcium ions in the eluate at an appropriate level by adjusting the eluate, prepared in an elution tank, to have a pH of 12 or higher, and wherein the nonwoven fabrics is prepared by the steps of: forming a masterbatch consisting of the precipitated calcium carbonate and a polyolefin based synthetic resin; forming a fiber material composition by mixing a polypropylene fiber material with the masterbatch; forming a web by melt-spinning the fiber material composition; and thermally pressing the web. The polyolefin based nonwoven fabrics comprising calcium carbonate and the preparation method therefor, of the present invention, configured as above, use calcium carbonate for enhancing whiteness, and are highly environment-friendly by using and reacting, during the preparation process of the calcium carbonate being used, carbon dioxide generated in a steel mill, etc. In addition, since the prepared precipitated calcium carbonate has excellent spinning properties, a certain amount or more of polypropylene can be replaced with the calcium carbonate, and thus, production costs can be reduced.
Description
Technical field
The present invention relates to bag polyolefin nonwoven fabric calciferous and manufacture method thereof, more specifically, relate to a kind of pure hard calcium carbonate manufactured by means of certain working procedure utilization makes lime accessory substance react with the carbon dioxide produced in steel making working procedure, manufacture the method for polyolefin nonwoven fabric, particularly relate to one and suitably utilize pure hard calcium carbonate, thus can manufacture the nonwoven fabric with remarkable whiteness at an easy rate, bag polyolefin nonwoven fabric calciferous and the manufacture method thereof of the amenities such as diaper, sanitary napkin can be effective to.
Background technology
Generally speaking, nonwoven fabric widely uses in the industrial materials in various fields such as hygienic material, daily necessities and agricultural use, filter, and its demand increases day by day.Wherein, spun-bonded non-woven fabrics refers at the nonwoven fabric carrying out manufacturing in the process of spinning to chemical fibre, as blowing on the conveyer belt of advancing from nozzle fiber out, form long fiber layer on a moving belt and the one of nonwoven fabric made, have the efficiency of manufacturing process well, also favourable economically advantage.Wherein, particularly polypropylene spun-bonded non-woven fabrics, there is the excellent characteristic of such as economy, light weight, mouldability, resistance to chemical reagents etc., thus from the hygienic material such as diaper, sanitary napkin, until groceries such as the packaging material such as family's electrical article, OA equipment, automotive interior trim material, disposable Work Clothes, use extensively.
The particularly disposable sanitary articles of such as diaper, sanitary napkin etc., the structure of hygienic material and the material for it are just improved at Rapid Variable Design, this part improved in item most emphasis and improve, can be described as the filming improving hygienic material and the whiteness giving outward appearance cleaning sense.Be associated with raising whiteness, such as, open in No. 2011-0076154th, Korean Patent Publication: " amenities polyolefin staple fibre carries out spinning to the composite molten thing be made up of the polyolefin-based resins of 70 ~ 97 % by weight and the calcium carbonate of 3 ~ 30 % by weight, the undrawn yarn of spinning is made to carry out stretching and being formed, described amenities polyolefin nonwoven fabric is formed by the mixed thing of described polyolefin staple fibre and sources of paper pulp fiber, so with the nonwoven fabric of the polyolefin staple fibre manufacture containing calcium carbonate, there is high whiteness, thus visually clean sense is remarkable, there is high basic weight, thus volume sense is improved, simultaneously, there is high-tensile strength, thus durability improves, when being used as diaper, during the surface of sanitary such as sanitary napkin or wet tissue material, amenities of fine qualities can be provided " to consumer.; comprise described invention disclosed; the shortcoming of in the past wrapping nonwoven fabric calciferous existence in order to promote whiteness is; due to productivity ratio etc.; its manufacturing expense rises; in the material use of the disposable sanitary articles as such as diaper or sanitary napkin, there is inadequate part from real angle.
Furthermore, when in order to produce bonded fabric product consume a large amount of thermoplasticity fluoropolymer resin every year, recently due to resin price rise, the production cost of nonwoven fabric rises further, and thus described problem is more outstanding.That is, the requirement of consumer to product property improves gradually, and because raw-material price rises, the competitiveness of polypropylene spun-bonded non-woven fabrics is continuing to decline.
On the other hand, the fulfiling of climate change pact relevant to global warming becomes problem recently, and the process of the various pernicious gases of thus steel mill generation etc. becomes social, economy problems day by day.Particularly as the discharge capacity of the carbon dioxide of one of steel mill accessory substance, scheme in the urgent need to address.
Therefore, the present inventor etc. are to being familiar with and the result studied of the scheme solving described problem, develop a kind of the described steel mill accessory substance becoming problem for wrapping the production of nonwoven fabric calciferous, thus can solve the scheme of both problems simultaneously, and propose the scheme effectively can implementing it, thus complete the present invention.
[prior art document]
[patent document]
Patent document 1: No. 2011-0076154th, Korean Patent Publication
Summary of the invention
The technical problem that invention will solve
Therefore, the present invention is just in view of the problem in described conventional art level and these technology, research and develop to address this is that, main purpose of the present invention aim to provide a kind of can improve the spun-bonded non-woven fabrics used in the manufacture of the amenities such as diaper, sanitary napkin in the past whiteness and overcome the polyolefin nonwoven fabric of price competitiveness limitation.
Another object of the present invention aims to provide a kind of nonwoven fabric, the carbon dioxide that steel mill etc. occurs, the production of the calcium carbonate added in manufacturing for nonwoven fabric, reduce CO2 emissions, use the calcium carbonate so produced, thus the goods of environment-friendly type are provided, there is high whiteness, thus embody the cleaning image of amenities, the price competitiveness of spun-bonded non-woven fabrics can be improved.
Another object of the present invention aims to provide a kind of manufacture method that more easily can manufacture the nonwoven fabric with described excellent characteristic.
The present invention, outside described having a definite purpose, can also be used as reach other object that can be described and easily derive from this object and this description by person of ordinary skill in the field as its object in the whole text.
The technical scheme of dealing with problems
Be intended to reach the manufacture method of the bag of the present invention polyolefin nonwoven fabric calciferous of described object,
The method of nonwoven fabric is manufactured as carrying out spinning also to stretch to the composite molten thing be made up of polyolefin-based resins and calcium carbonate, it is characterized in that, described calcium carbonate is hard calcium carbonate, in lime by-product solution, drop into calcium ion stripping additive, stripping calcium ion, sedimentation agent is dropped into after stripping, make the sedimentation of lime accessory substance, after being separated dissolution fluid and accessory substance, also carbon dioxide is blown into during dissolution fluid is transplanted on reactive tank, thus improve the reaction speed of dissolution fluid and carbon dioxide, the concentration of the calcium ion in dissolution fluid is made to remain that appropriate level produces, the manufacture of described nonwoven fabric is according to following steps manufacture:
Form the step of the masterbatch be made up of described hard calcium carbonate and polyolefin synthetic resin; Polypropylene fibrous material in described masterbatch and form the step of fiber material composition; Melt spinning is carried out to described fiber material composition and forms the step of fibre web; And the attached step of hot pressing is added to described fibre web.
Form according to of the present invention another, it is characterized in that, the formation of described masterbatch is made up of the described hard calcium carbonate of 40 to 90 % by weight and the polyolefin synthetic resin of 10 to 60 % by weight, is preferably made up of the hard calcium carbonate of 70 to 80 % by weight and the polyolefin synthetic resin of 20 to 30 % by weight.
According to another formation of the present invention, it is characterized in that, the step of described formation fiber material composition be masterbatch by mixing 5 to 40 % by weight, 60 to 95 % by weight polypropylene fibre material and formed.
According to another formation of the present invention, it is characterized in that, the hard calcium carbonate of described manufacture has the whiteness of more than 80, the particle mean size of less than 5 μm, the top of less than 15 μm are cut (Topcut), more preferably, hard calcium carbonate has the whiteness of more than 90, the particle mean size of less than 3 μm, the top of less than 10 μm are cut, compared with calcium carbonate in the past, there is the characteristic that spinnability is good.
According to another formation of the present invention, it is characterized in that, make in described spun-bonded non-woven fabrics, more than at least stacked one deck of the spun-bonded non-woven fabrics of identical type or melt spraying non-woven fabrics form.
Being intended to the bag of the present invention polyolefin nonwoven fabric calciferous reaching another object described, as carrying out spinning to the composite molten thing be made up of polyolefin-based resins and calcium carbonate and the nonwoven fabric stretching and manufacture, it is characterized in that,
Described calcium carbonate is hard calcium carbonate, be used in lime by-product solution and drop into calcium ion stripping additive, stripping calcium ion, sedimentation agent is dropped into after stripping, make the sedimentation of lime accessory substance, after being separated dissolution fluid and accessory substance, also carbon dioxide is blown into during dissolution fluid is transplanted on reactive tank, thus improve the reaction speed of dissolution fluid and carbon dioxide, regulate in stripping groove and manufacture dissolution fluid, make to reach more than pH12, thus make the calcium ion concentration in dissolution fluid remain that appropriate level produces; Described nonwoven fabric is, form the masterbatch be made up of described hard calcium carbonate and polyolefin synthetic resin, polypropylene fibrous material in described masterbatch and form fiber material composition, melt spinning is carried out to described fiber material composition and forms fibre web, then hot pressing is added to described fibre web attached, manufacture and there is outstanding whiteness.
Form according to of the present invention another, it is characterized in that, the calcium ion stripping additive of described use uses sodium trimetaphosphate, calgon, poly-hydroxy acid sodium, gathers a kind in hydroxy acid ammonium, polycarboxylic acids sodium, formic acid, succinic acid, sucrose fatty ester, natrium citricum, ammonium citrate, ammonium chloride or use with Hybrid of more than two kinds.
According to another formation of the present invention, it is characterized in that, described sedimentation agent respectively or the nonionic of Polyacrylamide used in combination and cationic or anionic property.
The effect of invention
The bag of the present invention polyolefin nonwoven fabric calciferous of formation described above and manufacture method thereof, calcium carbonate is utilized in order to promote whiteness, in the calcium carbonate manufacturing process utilized, use the carbon dioxide of the generations such as steel mill and make to react, thus the feature of environmental protection is high, the spinnability characteristic of the hard calcium carbonate manufactured is outstanding, can substitute more than polyacrylic given amount, can save production cost with this calcium carbonate.In addition, fiber material composition composition containing described calcium carbonate, melt spinning and fibre web to add hot pressing attached, implement by means of coherent process, due to whiteness, the remarkable cleaning sense of the brilliance of the hard calcium carbonate of manufacture, it is suitable for the amenities such as diaper, sanitary napkin.
Accompanying drawing explanation
Fig. 1 is the skeleton diagram of the manufacturing process roughly illustrating the bag manufactured according to the preferred embodiment of the present invention polyolefin nonwoven fabric calciferous,
Fig. 2 is scanning electronic microscope (SEM) photo of the spun-bonded non-woven fabrics manufactured according to the embodiment 2 as the preferred embodiment of the present invention,
Fig. 3 is scanning electronic microscope (SEM) photo of the polyacrylic spun-bonded non-woven fabrics of manufacture in as the comparative example 1 of previous methods 100 % by weight.
Detailed description of the invention
Be reference with accompanying drawing below, according to preferred embodiment, illustrate in greater detail the present invention, but category of the present invention be not limited thereto certainly.
According to the preferred embodiment of the present invention, in the manufacture of nonwoven fabric of the present invention, masterbatch is formed by calcium carbonate and polyolefin synthetic resin, the fiber material composition of described masterbatch, polypropylene fibre material mixing carries out melt spinning, form fibre web, provide and carry out adding the attached and polyolefin spun-bonded non-woven fabrics that forms of hot pressing by described fibre web.
In addition, according to the preferred embodiment of the present invention, provide a kind of manufacture method of spun-bonded non-woven fabrics, the calcium carbonate that the carbon dioxide that the calcium carbonate used in the present invention uses and generates in steel making working procedure reacts and produces, comprise: formed and be made up of this calcium carbonate of 40 to 90 % by weight and the polyolefin synthetic resin of 10 to 60 % by weight, the step of the masterbatch be more preferably made up of the hard calcium carbonate of 70 to 80 % by weight and the polyolefin synthetic resin of 20 to 30 % by weight; The mixing described masterbatch of 5 to 40 % by weight, the polypropylene fibre material of 60 to 95 % by weight and form the step of fiber material composition; Melt spinning is carried out to described fiber material composition and forms the step of fibre web; And the attached step of hot pressing is added to described fibre web.
In addition, in the present invention, can be provided in spun-bonded non-woven fabrics as above, the compound nonwoven cloth more than at least stacked one deck of the spun-bonded non-woven fabrics of identical type or melt spraying non-woven fabrics formed.
As mentioned above, according to the preferred embodiment of the present invention, spun-bonded non-woven fabrics of the present invention is used as raw material the fiber material composition that the masterbatch containing calcium carbonate mixes with polypropylene fibre material and manufactures.
The described calcium carbonate used in the present invention obtains from commercial chemical industry sequence, described commercialization operation is while utilizing lime by-product production to have the hard calcium carbonate of high added value, the carbon dioxide that iron and steel enterprise etc. occurs is directly used in reaction, thus minimizing carbon dioxide effect can be had.And, drop into calcium ion stripping additive, not only improve calcium ion dissolution rate, and sedimentation agent is dropped into after stripping, make the sedimentation of lime accessory substance, compared with once using the previous methods of filter, rapid separation dissolution fluid and accessory substance, even if be also blown into carbon dioxide during dissolution fluid is transplanted on reactive tank, thus the reaction speed of dissolution fluid and carbon dioxide is improved, regulate in stripping groove and manufacture dissolution fluid, make to reach more than pH12, thus the calcium ion concentration in dissolution fluid can be made to remain appropriate level, in reactive tank, only there is the reaction by means of dissolution fluid and carbon dioxide and the calcium carbonate that generates, thus after having reacted, there is not unreacted lime glaze, thus easily pH is regulated, granularity and the surface area of the calcium carbonate of generation can be regulated, the calcium carbonate with outstanding whiteness can be manufactured.
The calcium ion stripping additive of described use can use sodium trimetaphosphate, calgon, poly-hydroxy acid sodium, gathers a kind in hydroxy acid ammonium, polycarboxylic acids sodium, formic acid, succinic acid, sucrose fatty ester, natrium citricum, ammonium citrate, ammonium chloride or use with Hybrid of more than two kinds.This additive plays rapid for the calcium component in lime accessory substance stripping to the effect in water, and described additive blending ratio presses lime accessory substance 100 % by weight benchmark, is 0.01 to 10.0 % by weight, is preferably 0.03 to 2.0 % by weight.In addition, lime accessory substance 100 % by weight benchmark pressed by described sedimentation agent, use 0.01 to 3.0 % by weight, be preferably 0.02 to 1.0 % by weight, when sedimentation agent use amount is below 0.01 % by weight, sedimentation cannot be carried out smoothly, when sedimentation agent use amount is more than 3.0 % by weight, there is excessive aggegation, be unfavorable for the rapid stripping of calcium ion.This sedimentation agent can be distinguished or the nonionic of Polyacrylamide used in combination and cationic or anionic property.
In described manufacturing process of the present invention, the pH value dropped into before dissolution fluid to reactive tank inside is about 12 to 13, calcium carbonate reaction of formation is made to terminate reaction when internal pH is 9.0, this is because, in calcium carbonate generative process, be complete below 9.0 to 10 at pH usually, if pH is less than 9.0, dissolving appears in the calcium carbonate then produced again, and does not thus recommend.
This homogeneous hard calcium carbonate, compared with former goods, has the characteristic that spinnability is good.The hard calcium carbonate manufactured has the whiteness of more than 80, the particle mean size of less than 5 μm, the top of less than 15 μm are cut, compared with calcium carbonate in the past, there is the characteristic that spinnability is good, more preferably, hard calcium carbonate has the whiteness of more than 90, the particle mean size of less than 3 μm, the top of less than 10 μm are cut, and the hard calcium carbonate of manufacture has the good characteristic of spinnability.
First, in order in spun-bonded non-woven fabrics of the present invention, comprise the calcium carbonate manufactured as mentioned above, such as, form the masterbatch that forms of polyolefin synthetic resin by the calcium carbonate of 75 to 90 % by weight and 10 to 25 % by weight.
Specifically, the hard calcium carbonate of 75 to 90 % by weight mixes with the polyolefin synthetic resin of 10 to 25 % by weight, form masterbatch, described polyolefin synthetic resin be in by the group that polypropylene, polyethylene etc. are formed separately or mixing select melt index of more than two kinds 20 to 80g/10 minute.
According to the present invention, when spun-bonded non-woven fabrics is produced, with regard to the characteristic of main material, melt index (MI) is preferably used to be the polypropylene chip of 20 to 80g/10 minute, when the melt index of polypropylene chip is less than 20g/10 minute, melt viscosity is too high, and result exists the problem that throwing declines, when more than 80g/10 minute, melt viscosity is too low, spinnability declines, and result exists the shortcoming being difficult to stable operation, does not thus recommend.
In addition, become the composite molten thing of spun-bonded non-woven fabrics raw material of the present invention, acrylic resin by 60 to 95 % by weight and 5 to 40 % by weight the hard calcium carbonate masterbatch of described manufacture form, preferably, be made up of the acrylic resin of 80 to 90 % by weight and the hard calcium carbonate masterbatch of 10 to 20 % by weight.When hard calcium carbonate masterbatch contains quantity not sufficient 5 % by weight, do not possess and increase nonwoven fabric whiteness, the effects such as competitiveness of improving price, if hard calcium carbonate masterbatch content is more than 40 % by weight, then the spinnability of composite molten thing is bad, there is the low inferior problem of physical property of the nonwoven fabric manufactured, thus do not recommend.
Take accompanying drawing as reference below, the manufacture method of spun-bonded non-woven fabrics of the present invention is described simply.
Fig. 1 roughly illustrates the skeleton diagram manufacturing the manufacturing process of wrapping polyolefin nonwoven fabric calciferous according to the preferred embodiment of the present invention.
In order to manufacture nonwoven fabric, first, the acrylic resin stored in holding tank (Silo) is transplanted on the dispenser measured raw material, by 60 to 95 % by weight, with given amount to extruder supply.In addition, the masterbatch containing calcium carbonate is transplanted on other dispenser, by 5 to 40 % by weight, carries out measuring and being supplied to extruder with given amount.The raw material of supply and masterbatch melting and mixing in the extruder of high temperature, carry out spinning by the spinning head be made up of multiple aperture, become the fine silk of 10 to 30 μm.In an extruder, melt temperature remains on the fiducial temperature of 210 to 230 DEG C, and the temperature of carrying out the supply department supplied in the extruder of high temperature keeps lower than fusing department fiducial temperature 40 to 60 DEG C, and the temperature in spinning portion keeps higher than melt temperature 5 to 15 DEG C, extrude filament and stacked, form fibre web.
If melt temperature is less than 210 DEG C, then the insufficient melting of described fiber composition, if melt temperature is more than 230 DEG C, then the mechanical properties of the spun-bonded non-woven fabrics formed from described fiber composition is low, does not thus recommend.Therefore, the temperature of the fiber composition melting dropping into device for spinning is set to 210 to 230 DEG C, the temperature of supply department is kept lower than melt temperature, on the contrary, the temperature of fiber composition being carried out the spinning portion of spinning remains on higher than melt temperature, thus makes temperature increase successively.
Carry out melt spinning according to temperature conditions as above, extrude filament, the filament extruded cool by the cooling-air that sprayed by cellular ◎ shape chamber, solidify, be laminated for set weight on a moving belt because of the air be blown into from top.In order to give mechanical characteristic and morphological stability to the fibre web formed, heat and pressure is utilized to combine.Add the attached felt wrapped roll of hot pressing for fibre web, be made up of the sheet roll of the printing rollers and any surface finish with 10 to 30% Percentage bound.If Percentage bound is less than 10%, then the morphological stability of the fibre web formed is not enough, and there is the shortcoming that cannot be used as nonwoven fabric, when more than 30%, too filming, area widens, exists the shortcoming that sense of touch is bad.By means of felt wrapped roll, the attached temperature of hot pressing is added to fibre web and be 130 to 170 DEG C.
The basis weight of the polypropylene spun-bonded non-woven fabrics produced is 10 to 120gsm, and thickness is 0.05 to 0.7mm.If the pivot weight of polypropylene spun-bonded non-woven fabrics less than 10gsm, thickness less than 0.05mm, so the physical property of nonwoven fabric is low, when particularly low weight is produced, because productivity ratio is low inferior, there is the shortcoming that cannot produce economically, when basis weight more than 120gsm, thickness more than 0.7mm, due to blocked up, flexibility is low, and sense of touch is bad, there is the problem being difficult to be used as amenities or daily necessities.
Embodiment
Below according to following embodiment, illustrate in greater detail the present invention.But, following embodiment is only for specifically illustrating to the present invention, and non-limiting the present invention.
In following embodiment and comparative example, various characteristic transitivity value carries out measurement evaluation by the following method.
(1) weight (Weight): EDANA40.3-90
(2) extension elongation degree (TensilestrengthandElongation): EDANA20.2-89
(3) stiffness (BendingLength): EDANA50.5-99
(4) water pressure resistance (HydrostaticHead): DIN53886
(5) spinnability: fast knot and the spinning interruption frequency of observing fiber during spinning are evaluated
-fast knot or interrupt less than 3 time/hour: good
-fast knot or interrupt 3 to 10 times/hours: common
-fast knot or to interrupt more than 10 times/hours or cannot spinning: bad
Embodiment 1
The hard calcium carbonate of mix and blend 75 % by weight and the polypropylene chip of 25 % by weight and form masterbatch.Mix the described masterbatch of 5 % by weight, the polypropylene chip of 95 % by weight and form fiber composition.Fiber composition is dropped into device for spinning, carries out spinning by the spinning head be made up of multiple aperture, extrusion molding is carried out to filament.The melt temperature of device for spinning is remained on 220 DEG C, and the temperature of supply department remains on 170 DEG C, and the temperature in spinning portion remains on 225 DEG C, carries out extrusion molding to filament.The filament of extrusion molding in ◎ die cavity by means of spray cooling-air and solidify, by means of the air sprayed from top and from conveyer belt bottom suck air pressure and stretch, stacked on a moving belt, thus formation fibre web.
Described fibre web is forming in felt wrapped roll by the sheet roll of printing rollers and any surface finish, carries out adding hot pressing attached, form spun-bonded non-woven fabrics with the pressure of the temperature of 158 DEG C and 68dyne/cm.
Embodiment 2
Except the mixing masterbatch of use 20 % by weight, the polypropylene chip of 90 % by weight and the fiber combinations beyond the region of objective existence formed, manufactured nonwoven fabric identically with embodiment 1.
Embodiment 3
Except the mixing masterbatch of use 30 % by weight, the polypropylene chip of 80 % by weight and the fiber combinations beyond the region of objective existence formed, manufactured nonwoven fabric identically with embodiment 1.
Comparative example 1
Except the fiber combinations beyond the region of objective existence of the polypropylene chip of use 100 % by weight, manufactured nonwoven fabric identically with embodiment 1.
Comparative example 2
Use the mixing masterbatch of 50 % by weight, the polypropylene chip of 50 % by weight and the fiber composition formed, carry out spinning identically with embodiment 1, but spinnability very bad (generation fast knot), simultaneously, pressure increase in net converting filter, cannot manufacture spun-bonded non-woven fabrics.
For the spun-bonded non-woven fabrics manufactured according to the embodiment 1,2,3 of described description and comparative example 1,2, have rated into be grouped into, melt spinning time spinnability, weight, extension elongation degree physical property, be the results are shown in following table 1.
[table 1]
As shown in Table 1 above, when hard calcium carbonate masterbatch content is more than 40 % by weight, spinnability is bad, cannot manufacture spun-bonded non-woven fabrics.In addition, the content of calcium carbonate is more, and TENSILE STRENGTH more declines.
Fig. 2 is scanning electronic microscope (SEM) photo of the spun-bonded non-woven fabrics that described embodiment 2 of the present invention manufactures, and Fig. 3 is polypropylene 100 % by weight spun-bonded non-woven fabrics scanning electronic microscope (SEM) photo that comparative example 1 manufactures.As identifiable in Fig. 2, can confirm have hard calcium carbonate particle to protrude on spun-bonded non-woven fabrics surface, present the characteristic surperficial different from the spun-bonded non-woven fabrics only manufactured with acrylic resin of Fig. 3.
Above, the present invention has only carried out detailed description to the particular implementation recorded and embodiment, but within the scope of technological thought of the present invention, can carry out various distortion and amendment, this is that those skilled in the art is self-evident, and this distortion and amendment belong to claims certainly.
Claims (9)
1. wrap a manufacture method for polyolefin nonwoven fabric calciferous, manufacturing the method for nonwoven fabric as carrying out the composite molten thing be made up of polyolefin-based resins and calcium carbonate spinning also to stretch, it is characterized in that,
Described calcium carbonate is hard calcium carbonate, in lime by-product solution, drop into calcium ion stripping additive, stripping calcium ion, sedimentation agent is dropped into after stripping, make the sedimentation of lime accessory substance, after being separated dissolution fluid and accessory substance, during dissolution fluid is transplanted on reactive tank, be also blown into carbon dioxide, thus improve the reaction speed of dissolution fluid and carbon dioxide, make the concentration of the calcium ion in dissolution fluid remain that appropriate level produces; The manufacture of described nonwoven fabric is according to following steps manufacture:
Form the step of the masterbatch be made up of described hard calcium carbonate and polyolefin synthetic resin; Polypropylene fibrous material in described masterbatch and form the step of fiber material composition; Melt spinning is carried out to described fiber material composition and forms the step of fibre web; And the attached step of hot pressing is added to described fibre web.
2. the manufacture method of bag according to claim 1 polyolefin nonwoven fabric calciferous, is characterized in that,
The formation of described masterbatch is made up of the described hard calcium carbonate of 40 to 90 % by weight and the polyolefin synthetic resin of 10 to 60 % by weight.
3. the manufacture method of bag according to claim 1 polyolefin nonwoven fabric calciferous, is characterized in that,
The step of described formation fiber material composition is the masterbatch of mixing 5 to 40 % by weight, the polypropylene fibre material of 60 to 95 % by weight and being formed.
4. the manufacture method of bag according to claim 1 polyolefin nonwoven fabric calciferous, is characterized in that,
The hard calcium carbonate of described manufacture has the whiteness of more than 80, the particle mean size of less than 5 μm, the top of less than 15 μm are cut, and compared with calcium carbonate in the past, has the characteristic that spinnability is good.
5. the manufacture method of bag according to claim 4 polyolefin nonwoven fabric calciferous, is characterized in that,
The hard calcium carbonate of described manufacture has the whiteness of more than 90, the particle mean size of less than 3 μm, the top of less than 10 μm are cut, and compared with calcium carbonate in the past, has the characteristic that spinnability is good.
6. the manufacture method of bag according to claim 1 polyolefin nonwoven fabric calciferous, is characterized in that,
Make in described spun-bonded non-woven fabrics, more than at least stacked one deck of the spun-bonded non-woven fabrics of identical type or melt spraying non-woven fabrics form.
7. wrapping a polyolefin nonwoven fabric calciferous, as carrying out spinning to the composite molten thing be made up of polyolefin-based resins and calcium carbonate and the nonwoven fabric stretching and manufacture, it is characterized in that,
Described calcium carbonate is hard calcium carbonate, be used in lime by-product solution and drop into calcium ion stripping additive, stripping calcium ion, sedimentation agent is dropped into after stripping, make the sedimentation of lime accessory substance, after being separated dissolution fluid and accessory substance, also carbon dioxide is blown into during dissolution fluid is transplanted on reactive tank, thus improve the reaction speed of dissolution fluid and carbon dioxide, regulate in stripping groove and manufacture dissolution fluid, make to reach more than pH12, thus the calcium ion concentration in dissolution fluid is made to remain that appropriate level produces, described nonwoven fabric is, form the masterbatch be made up of described hard calcium carbonate and polyolefin synthetic resin, polypropylene fibrous material in described masterbatch and form fiber material composition, melt spinning is carried out to described fiber material composition and forms fibre web, then hot pressing is added to described fibre web attached, manufacture and there is outstanding whiteness.
8. bag according to claim 7 polyolefin nonwoven fabric calciferous, is characterized in that,
The calcium ion stripping additive of described use uses sodium trimetaphosphate, calgon, poly-hydroxy acid sodium, gathers a kind in hydroxy acid ammonium, polycarboxylic acids sodium, formic acid, succinic acid, sucrose fatty ester, natrium citricum, ammonium citrate, ammonium chloride or use with Hybrid of more than two kinds.
9. bag according to claim 7 polyolefin nonwoven fabric calciferous, is characterized in that,
Described sedimentation agent respectively or the nonionic of Polyacrylamide used in combination and cationic or anionic property.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/KR2013/007914 WO2015034109A1 (en) | 2013-09-03 | 2013-09-03 | Polyolefin based nonwoven fabrics comprising calcium carbonate, and preparation method therefor |
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| CN105492671A true CN105492671A (en) | 2016-04-13 |
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| CN201380079312.XA Pending CN105492671A (en) | 2013-09-03 | 2013-09-03 | Polyolefin based nonwoven fabrics comprising calcium carbonate, and preparation method therefor |
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| Country | Link |
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| JP (1) | JP2016532019A (en) |
| CN (1) | CN105492671A (en) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111155238A (en) * | 2019-07-17 | 2020-05-15 | 佛山市裕丰无纺布有限公司 | Manufacturing process of weak-acid non-woven fabric by spun-bonding method |
| CN114687069A (en) * | 2020-12-30 | 2022-07-01 | 浙江青昀新材料科技有限公司 | Multifunctional polymer non-woven fabric and fabric thereof |
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| CN114687069B (en) * | 2020-12-30 | 2023-06-20 | 江苏青昀新材料有限公司 | Multifunctional polymer non-woven fabric and fabric thereof |
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| JP2016532019A (en) | 2016-10-13 |
| WO2015034109A1 (en) | 2015-03-12 |
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