CN109853131A - High elongation rate non-woven fabrics and manufacturing method with using non-woven fabrics as the composite material of raw material - Google Patents
High elongation rate non-woven fabrics and manufacturing method with using non-woven fabrics as the composite material of raw material Download PDFInfo
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Abstract
The present invention relates to lateral high elongation rate non-woven fabrics, raw material is made of elastomer VM6202, PP raw material 3155E3, smooth master batch HS560 according to the ratio mixing of 30%:69.7%:0.3%.Lateral high elongation rate non-woven fabrics preparation method is also disclosed, and with the compound composite material obtained of lateral high elongation rate non-woven fabrics and elastic membrane.Drawing process condition of the invention and formula, so that the stretchable degree of non-woven fabrics is bigger and will not be broken, therefore product has higher cross direction elongation.The arrangement mode for changing fiber is stretched through three-level, and original flat fibre web is become fluffy by longitudinal stretching.Open width is 3.2 meters wide, and by three-level drawing process, breadth is 1.2 meters；Non-woven cloth after stretched is carried out shaping by forming machine, and the non-woven cloth is made to be not likely to produce deformation.The present invention produces a lateral high elongation rate non-woven fabrics, is mainly used for composite elastic membrane material；High elongation rate non-woven fabrics and elastic membrane are compound, can utmostly guarantee that composite material elasticity, nonwoven layer are not broken.
Description
Technical field
The invention belongs to field of nonwoven fabric technology, and in particular to high elongation rate non-woven fabrics and manufacturing method are with non-woven fabrics
The composite material of raw material.
Background technique
Non-woven fabrics is that fiber is directly passed through air-flow or mechanical networking using high polymer slice, staple fiber or long filament, then
By spun lacing, needle thorn or hot rolling are reinforced, the non-woven cloth finally formed by final finishing.Compared with traditional textile cloth,
Have the characteristics that process flow is short, speed of production is fast, yield is high, at low cost, purposes is wide.It is widely used in health care, family
The fields such as front yard decoration, auto industry, garment accessories.With the improvement of people ' s living standards with the enhancing of awareness of safety, non-woven fabrics
Anti-flammability increasingly become focus concerned by people.But traditional non-woven fabrics, there are nonelastic, material percentage elongation is relatively low
Defect is unable to satisfy the use of high request composite material.
Spun-bonded non-woven fabrics are a part of non-woven fabrics, are most common non-woven fabrics, and the major product of spun-bonded non-woven fabrics has third
Synthetic fibre, terylene, polypropylene (PP) non-woven fabrics, our most common also most commonly used applications are exactly non-woven bag, non-woven fabrics packaging etc.；
The identification of spun-bonded non-woven fabrics is easier to, general two-way fastness is good, and rolling for the non-woven fabrics of general spunbond is a little diamond shape.Spunbond
Non-woven fabrics is to squeeze out polymer, stretch, and after forming continuous filaments, long filament is laid with networking, and fibre web bonds using itself, is hot sticky
Conjunction, chemical adhesion or mechanical consolidation method, make fibre web become non-woven fabrics.High temperature resistance is good, high temperature resistance is good, and (polypropylene fibre can be
Used for a long time in 150 DEG C of environment, terylene can use for a long time in 260 DEG C of environment), ageing-resistant, uvioresistant, elongation percentage it is high, steady
It is qualitative and good permeability, corrosion-resistant, sound insulation, mothproof, nontoxic.
Traditional spun-bonded nonwoven cloth is nonelastic, and elastic force film-strength is too low, therefore often that the two is compound, can produce a existing
Elasticity can be widely applied for medicine and hygiene fields but also with the composite material of certain strength.But due to traditional spun-bonded nonwoven
Cloth elongation is limited, therefore it is compound limited with elastic membrane, can have the generation of the case where nonwoven layer fracture in recombination process, deposit
It is being unable to satisfy the shortcomings that high request composite material uses, is tending not to reach high standards.Patent No.
The production method of the cloud cotton non-woven cloth of 201710404672.2 spun-bond process and 201710403938.1 has the non-of unidirectional elasticity
Although being related to the non-woven cloth with certain elongation in the patent of the production method of woven cloths, stretching can only achieve substantially
3.2 meters are stretched to 2.4 meters, and the elongation of stretching is not high.
Summary of the invention
In order to solve above-mentioned technical problem of the existing technology, the present invention provides high elongation rate non-woven fabrics and manufacturing method
With using non-woven fabrics as the composite material of raw material.The present invention uses new Recipe, produces a lateral high elongation rate nonwoven
Cloth is mainly used for composite elastic membrane material；High elongation rate non-woven fabrics and elastic membrane are compound, can utmostly guarantee composite material
Elasticity, nonwoven layer are not broken.
The present invention is achieved through the following technical solutions, and first aspect present invention provides lateral high elongation rate non-woven fabrics,
Raw material is made of elastomer, PP raw material, smooth master batch according to the ratio mixing of 30%:69.7%:0.3%.
Preferably, elastomer selection VM6202, PP raw material selection 3155E3, smooth master batch select HS560.
Second aspect provides the manufacturing method of lateral high elongation rate non-woven fabrics, comprising the following steps: 1) in proportion by raw material
Mixing；2) raw material being mixed is vacuum-drawn against screw rod by feed system and carries out extrusion molten, obtain hot melt；3)
Hot melt is filtered, measure and is distributed；4) the good hot melt of distribution and computation is subjected to spinning, and spun silk is cold through side
Air cooling obtains just growing filament；5) first growing filament is subjected to drawing-off, obtains fiber；6) by fiber sub-wire lapping, fibre web is formed；
7) by after fibre web hot rolling, non-woven cloth is obtained；It is characterized by also including 8) will be whole after the non-woven cloth of hot rolling passes through
Reason system carries out final finishing processing, carries out Hot-blast Heating and is stretched three times simultaneously, 60~90 DEG C of heating temperature；9) it winds,
Cutting.
Preferably, in step 8), first traction draw roll compares line speed fast 40% or more, and second traction is drawn
It is fast by 40% or more to stretch than first traction draw roll of roller, than second traction draw roll of third branch traction draw roll it is fast by 40% with
On.
Preferably, in step 2), 180 DEG C~270 DEG C of screw rod melting temperature；Preferably, hot melt carries out in step 3)
The operation temperature of filtering, metering and distribution is 230~250 DEG C, and pressure is in 5~10MPa.
Preferably, in step 4), the good hot melt spinning of distribution and computation is passed through by spraying silk in the aperture 0.3~0.8mm
Cool wind box is cooling, and 10~20 DEG C of cool wind box temperature, cooling 0.2~1.5m/s of wind velocity.
Preferably, in step 5), mode of the first growing filament Jing Guo air-flow sub-wire, by the horn mouth of slit extension apparatus,
First growing filament is subjected to air drawing, air drawing speed is 2000m/H--5000m/H.
Preferably, in step 6), fiber being taped against on lace curtaining in a jumble at having exhaust fan under lace curtaining, carries out downward
Fiber is fixed on lace curtaining by suction air, is carried out precompressed by pony press, is formed fibre web.
Preferably, in step 7), by fibre web by being transferred to hot-rolling mill under the drive of lace curtaining roller at lace curtaining, through overheating
Non-woven cloth is obtained after the effect of the heat pressure adhesive of milling train topping roll and bottom roll, 80~120 DEG C of hot-rolling mill temperature, line pressure 30~
70MPa；Non-woven cloth is transferred to final finishing system by upper winding roller and lower winding roller.
The third aspect is provided using lateral high elongation rate non-woven fabrics as the composite material of raw material, with lateral high elongation rate non-woven fabrics
Compound be made is carried out with elastic membrane.
The invention has the benefit that
1) drawing process condition of the invention and formula can be from so that the stretchable degree of non-woven fabrics is bigger and will not be broken
3.2 meters of breadth are stretched to 1.2 meters, therefore product has higher cross direction elongation.The row for changing fiber is stretched through three-level
Original flat fibre web, is become by longitudinal stretching that fluffy (open width is 3.2 meters wide, by three-level drawing process, breadth by column mode
It is 1.2 meters)；Non-woven cloth after stretched is carried out shaping by forming machine, and the non-woven cloth is made to be not likely to produce deformation.
2) present invention uses new Recipe, produces a lateral high elongation rate non-woven fabrics, is mainly used for compound bullet
Property membrane material；High elongation rate non-woven fabrics and elastic membrane are compound, can utmostly guarantee that composite material elasticity, nonwoven layer are continuous
It splits.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
As background technology part is introduced, traditional spun-bonded nonwoven cloth is nonelastic, and elastic force film-strength is too low, therefore often will
The two is compound, can produce a both flexible, but also with the composite material of certain strength, can be widely applied for health care
Field.It is compound limited with elastic membrane but since traditional spun-bonded nonwoven cloth elongation is limited, can exist in recombination process
The case where nonwoven layer is broken exists and is unable to satisfy the shortcomings that high request composite material uses, tend not to reach high standard
Alignment request.The production method of the cloud cotton non-woven cloth of 201710404672.2 spun-bond process of Patent No. and 201710403938.1 tools
Although being related to the non-woven cloth with certain elongation in the patent for having the production method of the non-woven cloth of unidirectional elasticity, draw
Stretching can only achieve 3.2 meters substantially and is stretched to 2.4 meters, and the elongation of stretching is not high.
The invention provides lateral high elongation rate non-woven fabrics, raw material by elastomer, PP raw material, smooth master batch according to
The ratio of 30%:69.7%:0.3% mixes composition.
PP material is conventional selection；Elastomer ratio is 30%, if ratio is too low, drawing effect is bad, easily breaks, ratio
It is excessively high, it is easy to influence product composite effect, nonwoven surface is made to be not easy to bind range 25%-35% with other materials；It is smooth
Master batch can make the better filature fleece formation of raw material, and fiber is more smooth in drafting process, be less prone to fracture, the addition of master batch
Measure not too large, range is no more than 1.5% as far as possible.
Elastomer selection VM6202, PP raw material selection 3155E3, smooth master batch select HS560.
Second aspect provides the manufacturing method of lateral high elongation rate non-woven fabrics, comprising the following steps: 1) in proportion by raw material
Mixing；2) raw material being mixed is vacuum-drawn against screw rod by feed system and carries out extrusion molten, obtain hot melt；3)
Hot melt is filtered, measure and is distributed；4) the good hot melt of distribution and computation is subjected to spinning, and spun silk is cold through side
Air cooling obtains just growing filament；5) first growing filament is subjected to drawing-off, obtains fiber；6) by fiber sub-wire lapping, fibre web is formed；
7) by after fibre web hot rolling, non-woven cloth is obtained；It is characterized by also including 8) will be whole after the non-woven cloth of hot rolling passes through
Reason system carries out final finishing processing, carries out Hot-blast Heating and is stretched three times simultaneously, 60~90 DEG C of heating temperature；9) it winds,
Cutting.
Drawing process condition of the invention and formula, so that the stretchable degree of non-woven fabrics is bigger and will not be broken, it can be from width
Wide 3.2 meters are stretched to 1.2 meters, therefore product has higher cross direction elongation.The arrangement for changing fiber is stretched through three-level
Original flat fibre web, is become by longitudinal stretching that fluffy (open width is 3.2 meters wide, and by three-level drawing process, breadth is by mode
1.2 meters)；Non-woven cloth after stretched is carried out shaping by forming machine, and the non-woven cloth is made to be not likely to produce deformation.
In step 8), first traction draw roll compares line speed fast 40% or more, second traction draw roll ratio
First traction draw roll fast 40% or more, than second traction draw roll of third branch traction draw roll are fast by 40% or more.
In the case of existing equipment, the tensile speed can stretched non-woven cloth material to the greatest extent, while guaranteeing certain
Strongly, guarantee not broken etc., if excessive velocities, may result in cloth cover fracture, or strength is not up to standard, speed is excessively slow, draws
It is poor to stretch effect, high drawing requirement is not achieved.
In step 2), 180 DEG C~270 DEG C of screw rod melting temperature；Within the scope of this, raw material melts better effect, lower than this temperature
Degree may cause raw material melting and be not thorough, be higher than this temperature, may result in raw material denaturation, and two kinds of situations can lead to spinning
It is abnormal.
In step 3), operation temperature that hot melt is filtered, measures and distributes is 230~250 DEG C, pressure 5~
10MPa。
In step 4), the good hot melt spinning of distribution and computation is by spraying silk in the aperture 0.3~0.8mm, by cooling wind
Case is cooling, and 10~20 DEG C of cool wind box temperature, cooling 0.2~1.5m/s of wind velocity.The setting of this range is for guaranteeing spinning
And it is into the net normal, it is higher or relatively low, it can all lead to the results such as cloth cover is uneven, networking is abnormal.
In step 5), mode of the first growing filament Jing Guo air-flow sub-wire will just be grown by the horn mouth of slit extension apparatus
Silk carries out air drawing, and air drawing speed is 2000m/H--5000m/H.Obtain the fiber of 1.8~2.2 Denier fiber numbers, warp
The first growing filament strand marshalling of drawing-off is crossed, strength is generated, forms fiber.It is selected above or lower than 2000m/H--
The air drawing speed of this range of 5000m/H will lead to the results such as cloth cover is uneven.
In step 6), by fiber being taped against on lace curtaining in a jumble, at having exhaust fan under lace curtaining, downward suction air is carried out,
Fiber is fixed on lace curtaining, precompressed is carried out by pony press, forms fibre web.
In step 7), by fibre web by being transferred to hot-rolling mill under the drive of lace curtaining roller at lace curtaining, by hot-rolling mill
Non-woven cloth is obtained after the effect of the heat pressure adhesive of roll and bottom roll, 80~120 DEG C of hot-rolling mill temperature, 30~70MPa of line pressure；
Non-woven cloth is transferred to final finishing system by upper winding roller and lower winding roller.
The temperature and pressure hot rolling effect are best, will lead to three layers of fibre web hot rolling less than one piece lower than this temperature or pressure,
Loosely, it fluffs, the indices such as wearability are poor；If temperature is excessively high or hypertonia, it will lead to non-woven fabrics and roll, roll rotten, cloth
Face is hardened, crisp, and strength is low.
The third aspect is provided using lateral high elongation rate non-woven fabrics as the composite material of raw material, with lateral high elongation rate non-woven fabrics
Compound be made is carried out with elastic membrane.
In order to enable those skilled in the art can clearly understand the technical solution of the application, below with reference to tool
The technical solution of the application is described in detail in the embodiment of body.
Test material used in the embodiment of the present invention is the test material of this field routine, can pass through commercial channel
It is commercially available.
Embodiment,
1) by elastomer VM6202, PP raw material 3155E3, smooth master batch HS560 according to the ratio of 30%:69.7%:0.3%
Example is uniformly mixed；
2) raw material being mixed is vacuum-drawn against screw rod by feed system and carries out extrusion molten, obtain heat
Melt (180 DEG C~270 DEG C of screw rod melting temperature)；
3) hot melt is filtered, measured and distributed the (hot melt stated under certain temperature, certain pressure
The operation temperature for being filtered, measuring and distributing is 230~250 DEG C, and pressure is in 5~10MPa)；
4) the good hot melt of the distribution and computation is subjected to spinning, and spun silk is come into being through side cold front heavy rain
Long filament (it is to be cooled down by spraying silk in the aperture 0.3~0.8mm by cool wind box by the good hot melt spinning of distribution and computation, it is cold
But 10~20 DEG C of box temperature, cooling 0.2~1.5m/s of wind velocity, by the first growing filament of the cooling acquisition of silk)；
5) will it is described just growing filament carry out drawing-off, obtain fiber (mode by the first growing filament Jing Guo air-flow sub-wire,
By the horn mouth of slit extension apparatus, first growing filament is subjected to air drawing, air drawing speed is 2000m/H--5000m/
H obtains the fiber of 1.8~2.2 Denier fiber numbers, while the first growing filament strand marshalling Jing Guo drawing-off, generates strength,
Form fiber)；
6) it by the fiber sub-wire lapping, forms fibre web and (is taped against into the fiber is mixed and disorderly on lace curtaining, at having pumping under lace curtaining
Blower carries out downward suction air, fiber is fixed on lace curtaining, carries out precompressed by pony press, forms fibre web)；
7) non-woven cloth will be obtained (by the fibre web by lace curtaining, in the drive of lace curtaining roller after fibre web hot rolling
Under, it is transferred to hot-rolling mill, obtains non-woven cloth, hot-rolling mill temperature after the effect of the heat pressure adhesive of hot-rolling mill topping roll and bottom roll
80~120 DEG C, 30~70MPa of line pressure of degree, which is transferred to final finishing system by upper winding roller and lower winding roller
System)；
8) non-woven cloth Jing Guo hot rolling is subjected to final finishing processing by final finishing system, carries out Hot-blast Heating and simultaneously
It is stretched three times, 60~90 DEG C of heating temperature, the use of the motor of stretching is frequency control motor, and have speed difference adjusting, the
One traction draw roll compares line speed fast 40% or more, and than first traction draw roll of second traction draw roll is fast
40% or more, than second traction draw roll of third branch traction draw roll is fast by 40% or more, changes fiber by three-level stretching
Arrangement mode, by original flat fibre web by longitudinal stretching become it is fluffy (open width is 3.2 meters wide, by three-level drawing process,
Breadth is 1.2 meters)；Non-woven cloth after stretched is carried out shaping by forming machine, and the non-woven cloth is made to be not likely to produce deformation；
9) it winds, cutting.
Test data: carrying out quantitative measurement for obtained product of the invention, (CD is lateral, and MD is longitudinal)；Test knot
Fruit see the table below:
The comparison of 13g product:
| Project | High elongation rate product | Common product |
| Grammes per square metre | 13 | 13 |
| Strength CD | 5.4 | 10 |
| Strength MD | 32.6 | 33 |
| Elongation CD | 245.0 | 119 |
| Elongation MD | 125.5 | 115 |
The comparison of 20g product:
| Project | High elongation rate product | Common product |
| Grammes per square metre | 20 | 20 |
| Strength CD | 9.6 | 21 |
| Strength MD | 38.2 | 43 |
| Elongation CD | 250.0 | 120 |
| Elongation MD | 138.5 | 110 |
The comparison of 25g product:
| Project | High elongation rate product | Common product |
| Grammes per square metre | 25 | 25 |
| Strength CD | 15.9 | 30 |
| Strength MD | 52.5 | 54 |
| Elongation CD | 260.0 | 122 |
| Elongation MD | 121.5 | 102 |
Using new formula, arranged in pairs or groups by the ratio of elastomer, spunbond material, smooth master batch three, adjusting out can achieve most
The formula rate of high elongation rate, compared with common non-woven fabric, cross direction elongation can promote 80% to 100% (being longitudinally basically unchanged),
The advantages of material can be compound with elastic membrane, and composite material has both two kinds of materials characteristic.
Certainly, above description is also not limited to the example above, technical characteristic of the present invention without description can by or
It is realized using the prior art, details are not described herein；It is not to this that the above examples are only used to illustrate the technical scheme of the present invention
The limitation of invention, describes the invention in detail referring to preferred embodiment, and those skilled in the art should
Understand, the variations, modifications, additions or substitutions that those skilled in the art are made within the essential scope of the present invention
Without departure from spirit of the invention, it also should belong to claims of the invention.
Claims (10)
1. lateral high elongation rate non-woven fabrics, it is characterised in that: raw material is by elastomer, PP raw material, smooth master batch according to 30%:
The ratio of 69.7%:0.3% mixes composition.
2. transverse direction high elongation rate non-woven fabrics according to claim 1, it is characterised in that: the elastomer selection VM6202,
PP raw material selects 3155E3, smooth master batch to select HS560.
3. the manufacturing method of described in any item lateral high elongation rate non-woven fabrics according to claim 1~2, it is characterised in that: packet
It includes following steps: 1) mixing raw material in proportion；2) raw material being mixed is vacuum-drawn against screw rod by feed system
Extrusion molten is carried out, hot melt is obtained；3) hot melt is filtered, measured and distributed；4) hot melt that distribution and computation is good
Spinning is carried out, and by spun silk through side cold front heavy rain, obtains just growing filament；5) first growing filament is subjected to drawing-off, obtains fiber；
6) by fiber sub-wire lapping, fibre web is formed；7) by after fibre web hot rolling, non-woven cloth is obtained；It is characterized by also including 8) will
Non-woven cloth by hot rolling carries out final finishing processing by final finishing system, carries out Hot-blast Heating and is drawn three times simultaneously
It stretches, 60~90 DEG C of heating temperature；9) it winds, cutting.
4. according to the method described in claim 3, it is characterized by: first traction draw roll compares production line in step 8)
Speed fast 40% or more, than first traction draw roll of second traction draw roll is fast by 40% or more, third branch traction draw roll
Than second traction draw roll is fast by 40% or more.
5. according to the method described in claim 3, it is characterized by: in step 2), 180 DEG C~270 DEG C of screw rod melting temperature；Make
To be preferred, in step 3), operation temperature that hot melt is filtered, measures and distributes is 230~250 DEG C, pressure 5~
10MPa。
6. according to the method described in claim 3, it is characterized by: the good hot melt spinning of distribution and computation passes through in step 4)
0.3~0.8mm sprays silk in aperture, cooling by cool wind box, and 10~20 DEG C of cool wind box temperature, cooling wind velocity 0.2~
1.5m/s。
7. according to the method described in claim 3, it is characterized by: in step 5), mode of the first growing filament Jing Guo air-flow sub-wire,
By the horn mouth of slit extension apparatus, first growing filament is subjected to air drawing, air drawing speed is 2000m/H--5000m/
H。
8. according to the method described in claim 3, it is characterized by: in step 6), it is taped against into fiber is mixed and disorderly on lace curtaining, at
There is exhaust fan under lace curtaining, carry out downward suction air, fiber is fixed on lace curtaining, precompressed is carried out by pony press, is formed
Fibre web.
9. according to the method described in claim 3, it is characterized by: in step 7), by fibre web by lace curtaining, in lace curtaining roller
Under drive, it is transferred to hot-rolling mill, obtains non-woven cloth, hot rolling after the effect of the heat pressure adhesive of hot-rolling mill topping roll and bottom roll
80~120 DEG C of machine temperature, 30~70MPa of line pressure；Non-woven cloth is transferred to final finishing system by upper winding roller and lower winding roller
System.
10. feature exists using the described in any item lateral high elongation rate non-woven fabrics of claim 1~2 as the composite material of raw material
In: compound be made is carried out with lateral high elongation rate non-woven fabrics and elastic membrane.
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Application publication date: 20190607 |