CN110154470A - A kind of compound nonwoven cloth of waterproof and breathable and the preparation method and application thereof - Google Patents
A kind of compound nonwoven cloth of waterproof and breathable and the preparation method and application thereof Download PDFInfo
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- CN110154470A CN110154470A CN201910257408.XA CN201910257408A CN110154470A CN 110154470 A CN110154470 A CN 110154470A CN 201910257408 A CN201910257408 A CN 201910257408A CN 110154470 A CN110154470 A CN 110154470A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
- B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/02—Synthetic macromolecular fibres
- B32B2262/0276—Polyester fibres
- B32B2262/0284—Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/552—Fatigue strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/724—Permeability to gases, adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/726—Permeability to liquids, absorption
- B32B2307/7265—Non-permeable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2607/00—Walls, panels
- B32B2607/02—Wall papers, wall coverings
Abstract
The invention discloses a kind of compound nonwoven cloths of waterproof and breathable, are formed by bottom fibre web, M layers of centre fibre web and upper layer fibre web through thermal finalization；The bottom fibre web is spunbond PET filament web；The intermediate M layers of fibre web includes at least two layers modified melt-blown PET fibre web added with 1-5wt% water repellent auxiliary agent；The upper layer fibre web is the spunbond PET filament web added with 0.5-3wt% water repellent auxiliary agent.Compound nonwoven cloth of the invention has excellent waterproof and breathable performance, can be applied to the fields such as building exterior wall heat preserving, and the moisture outside building can be blocked in outside and the vapor in building is discharged, ensured the comfort of human habitat.
Description
Technical field
The present invention relates to waterproof ventilative material preparation technical fields, and in particular to a kind of compound nonwoven cloth of waterproof and breathable and
Preparation method and application.
Background technique
In the field of construction, water and steam are an important factor for threatening building safety.Architectural development initial stage, external rainwater seep
It is buildings waterproof system High risk population thoroughly, traditional approach is that one layer of air-locked waterproof layer is overlying on except insulating layer, this
Though kind of way obstructs rainwater except building, equally also it will make it can not from indoor vapor " stifled " in insulating layer
Effectively discharge.This is because room temperature and humidity are generally higher than outdoor, indoor water vapor permeation solid wall infiltrates into insulating layer
In, dew is condensed on the inside of waterproof layer to the cold, accumulating over a long period causes insulating layer to make moist, and damages its heat insulating ability and durability.With
To further stringent and waterproof technique the promotion that the prevention and treatment of indoor vapor requires, the contradiction of waterproof demand and ventilative demand is increasingly dashed forward
Out.
Waterproof ventilated membrane is a kind of novel high polymer waterproof material, and existing building water-proof ventilated membrane mainly has three layers of structure
At: PP spun-bonded non-woven fabrics, PE gas permeable polymer film and PP spun-bonded non-woven fabrics, wherein the effect of spun-bonded non-woven fabrics mainly enhances
Pulling force and hydrostatic pressing and protection middle layer (ventilated membrane), it is really ventilative mainly by middle layer PE gas permeable polymer film.It is existing
The preparation process of waterproof ventilated membrane is predominantly cast that compound and hot melt adhesive is compound, but the waterproof ventilated membrane of both techniques preparation
Gas permeability all very littles or even airtight；And hot melt adhesive combination process due to the fusing point of hot melt adhesive it is low, winter does not work, easily
Layering, summer hot melt adhesive can melt；And due to the physicochemical properties of PP itself, existing waterproof ventilated membrane is being used for a long time
It is easy to aging afterwards, or even the effect of waterproof and breathable is lost completely.
Summary of the invention
For the above-mentioned prior art, the object of the present invention is to provide a kind of compound nonwoven cloth of waterproof and breathable and its preparation sides
Method, compound nonwoven cloth of the invention have excellent waterproof and breathable performance, can be applied to the fields such as building exterior wall heat preserving, can incite somebody to action
Moisture outside building is blocked in outside, and the vapor in building can be discharged, and has ensured the comfort of human habitat.
To achieve the above object, the present invention adopts the following technical scheme:
The first aspect of the present invention provides a kind of compound nonwoven cloth of waterproof and breathable, by bottom fibre web, M layers of centre fibre web
It is formed with upper layer fibre web through thermal finalization；
The bottom fibre web is spunbond PET filament web；
The intermediate M layers of fibre web includes at least two layers modified melt-blown PET fibre web added with 1-5wt% water repellent auxiliary agent；
The upper layer fibre web is the spunbond PET filament web added with 0.5-3wt% water repellent auxiliary agent.
Preferably, in the bottom fibre web, the fibre fineness of fiber is 2-3D.Bottom fibre web is and builds outer face contact
, the fibre fineness of fiber in bottom fibre web is limited to 2-3D, keeps the bottom surface relative coarseness of compound nonwoven cloth some, is constructing
It is easily bonded in the process with building sides, avoids the occurrence of slip phenomenon.
Preferably, in the intermediate M layers of fibre web, the diameter of fiber is 0.5-2 μm.
Preferably, the intermediate M layers of fibre web includes two layers of modified melt-blown PET fibre web added with 1-5wt% water repellent auxiliary agent.
Intermediate M layers of fibre web is the key stratum for playing the role of waterproof and breathable in compound nonwoven cloth of the invention, wherein fiber
The number of plies of diameter and modified melt-blown PET fibre web will affect the aperture of intermediate M layers of fibre web, it is found through experiment that, the diameter of fiber is
0.5-2 μm, the number of plies of modified melt-blown PET fibre web is when being 2 layers, the waterproof and breathable performance of intermediate M layers of fibre web is best.
Preferably, in the upper layer fibre web, the fibre fineness of fiber is 1-1.5D.
Preferably, the water repellent auxiliary agent is trifluoro propyl methyl silicide.
The main function of upper layer fibre web is waterproof, therefore the application is added with water repellent auxiliary agent, Ke Yiyou in the fibre web of upper layer
Change its waterproof effect；In addition, upper layer fibre web while waterproof, also should ensure that the row of the vapor penetrated by intermediate M layers of fibre web
Out, therefore the fibre fineness of fiber in the fibre web of upper layer is limited to 1-1.5D by the application.
Preferably, the bottom fibre web accounts for the 15-30% of compound nonwoven cloth weight, and the intermediate M layers of fibre web accounts for compound nothing
The 30-60% of woven fabric weight, the upper layer fibre web account for the 25-40% of compound nonwoven cloth weight.
In compound nonwoven cloth of the invention, the direct shadow of weight ratio shared by bottom fibre web, M layers of centre fibre web and upper layer fibre web
The ventilative and waterproof performance of compound nonwoven cloth is rung, it is found through experiment that, using the waterproof of the compound nonwoven cloth of above-mentioned weight ratio preparation
Ventilative comprehensive performance is preferable, changes wherein a certain layer or certain several layers of weight ratio, the then composite non woven prepared on this basis
The waterproof and breathable performance of cloth can reduce.
The second aspect of the present invention provides the preparation method of above-mentioned compound nonwoven cloth, comprising the following steps:
(1) it the preparation of bottom fibre web: is sliced with IV value 0.6-0.7,255-265 DEG C of fusing point of PET for raw material, using spunbond
The fiber web layer that fibre fineness is 2-3D is prepared in method, as bottom fibre web；
(2) preparation of intermediate M layers of fibre web: IV value 0.6-0.7,255-265 DEG C of fusing point of PET slice are modified, made
It is standby to obtain IV value 0.35-0.45,255-265 DEG C of fusing point of modified PET slice, using modified PET slice as raw material, adding raw materials weight
The water repellent auxiliary agent for measuring 1-5% uses the preparation of melt-spraying spinning method at aperture for 1.8-5.0 μm of melt-blown hydrophobic fiber net, will at least
Two layers of melt-blown hydrophobic fiber net is overlapped, as intermediate M layers of fibre web；
(3) it the preparation of upper layer fibre web: is sliced for raw material, into raw material with IV value 0.6-0.7,255-265 DEG C of fusing point of PET
Add 0.5-3wt% water repellent auxiliary agent, the hydrophobic fiber stratum reticulare for using spun-bond process that fibre fineness is prepared as 1-1.5D, as upper
Layer fibre web；
(4) thermal finalization: by bottom fibre web, M layers of centre fibre web and upper layer fibre web successively laying, in 180-260 DEG C of temperature, line
Three-level thermal finalization is carried out under the process conditions of pressure 40-150N/mm, that is, compound nonwoven cloth is prepared.
Preferably, in step (2), the modified method of PET slice are as follows: by IV value 0.6-0.7,255-265 DEG C of fusing point of PET
Slice is in 120-160 DEG C of crystallizing and drying 6-12h, by moisture control within 30PPm, addition PET coupon weight 0.5-5%'s
The auxiliary agent of di-tert-butyl peroxide and 0.2-1% at 300-320 DEG C and has under inert gas shielding in high speed twin-screw extrusion
It is sufficiently mixed reaction in machine, reacts to the IV value 0.35-0.45 of polymer, 255-265 DEG C of fusing point.
By above-mentioned modification, PET strand can be interrupted, PET relative molecular mass is reduced, makes relative molecular mass
Narrow, improve the mobility of PET melt, its melt-blown fiber diameters is made to can satisfy requirement.
Preferably, in step (4), the three-level thermal finalization specifically: in 180-220 DEG C, the item of line pressure 40-80N/mm
First order thermal finalization is carried out to intermediate M layers of fibre web under part；To bottom under conditions of 220-260 DEG C, line pressure 80-150N/mm
Fibre web, M layers of centre fibre web and the bonding of upper layer fibre web carry out second level thermal finalization；Third level table is carried out under the conditions of 240-260 DEG C
Face heat treatment.
It is more conducive to bond by three-level thermal finalization processing, product is not in lamination, improves peel strength.
The third aspect of the present invention provides above-mentioned compound nonwoven cloth and is preparing buildings waterproof ventilated membrane and/or waterproofing packing
Application in material.
Beneficial effects of the present invention:
(1) compound nonwoven cloth of the invention, upper layer fibre web have resistance effect, and intermediate M layers of fibre web can form water proof
Layer, and there are micropores for fibre gap, have gas permeability, waterproof action can be played to architectural engineering and makes to build interior moisture
It excludes, is real " can type of respiration " waterproof material.
(2) compound nonwoven cloth of the invention is to be combined using PET as raw material through spunbond and melt-spraying spinning, PET raw material compared with
PP material has the advantages such as fusing point is high, resistance to ag(e)ing and chemical stability are good, and raw material is cheap, therefore, the present invention
Compound nonwoven cloth have stronger ageing resistance.
(3) for the fiberoptic fiber fineness of the bottom fibre web of compound nonwoven cloth of the invention in 2-3D, nonwoven surface is relatively crude
It is more rough, it is easily bonded in the construction process with building sides, avoids the occurrence of slip phenomenon.
Detailed description of the invention:
Fig. 1: the structural schematic diagram of compound nonwoven cloth of the invention；Wherein, 1- bottom fibre web, M layers of fibre web among 2-, on 3-
Layer fibre web.
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 introduction, in building field, the contradiction of waterproof demand and ventilative demand becomes increasingly conspicuous, existing
Some building water-proof ventilated membranes are caused its gas permeability bad, are held in use due to material and the intrinsic defect of technique
It is easy to aging.Based on this, the purpose of the present invention is develop a kind of novel buildings waterproof ventilated membrane non-woven fabrics.
Non-woven fabrics is also known as non-woven cloth, is a kind of fabric for not needing spinning and weaving and being formed, only by textile staple
Or long filament is oriented or random alignment, forms fibre net structure, then using the methods of mechanical, hot sticky or chemical reinforcing and
At.
Spun-bond process and meltblown are two kinds of main methods of non-woven material production, wherein spun-bond process is fine using chemistry
Spinning moulding principle is tieed up, so that continuous filament fibers is laid networking during polymer spinning, fibre web is through mechanical, chemical or hot sticky
It closes and reinforces into cloth, whole process is completed by a set of equipment；It is structurally characterized in that is made of fibre web (fiber set continuous filaments at random
Body), there is good physical mechanical property.Meltblown is to be blown polymer melt by high-speed and high-temperature airflow, keeps melt thin
Stream is extremely stretched and forms superfine fibre, is then agglomerated on perforated cylinder or lace curtaining and is formed fibre web, then is bonded through itself
Or heat bonding effect is able to reinforce and be made a kind of production technology of non-woven cloth；It is structurally characterized in that fiber, and superfine (fiber is straight
Diameter reaches micron order even nanoscale), large specific surface area, fibre web voidage is high, fibre web good evenness.
Waterproof ventilated membrane is a kind of novel high molecular material, much higher than normal waterproof material of technical requirements,
While reinforcing building air-tightness, watertightness, the steam of inside configuration is also required to be discharged rapidly.
PET has the advantages such as fusing point is high, resistance to ag(e)ing and chemical stability are good, and the market price of PET slice compared with PP material
Lattice are only the half of PP slice price.But since the mobility of PET melt is low and PET melt is easily degraded, lead to PET
Melt-spraying spinning is extremely difficult.
The present invention is for the first time using PET as raw material, each self-structure spy based on the non-woven material that spun-bond process and meltblown produce
Point is utilized respectively spun-bond process and meltblown production spunbond PET filament web and modified melt-blown PET fibre web, and carried out it is compound,
A kind of compound nonwoven cloth with excellent waterproof and airing function is prepared.
In one embodiment of the present invention, the compound nonwoven cloth is fine by bottom fibre web, M layers of centre fibre web and upper layer
Net is formed through thermal finalization；The bottom fibre web accounts for the 15-30% of compound nonwoven cloth weight, and the intermediate M layers of fibre web accounts for compound nothing
The 30-60% of woven fabric weight, the upper layer fibre web account for the 25-40% of compound nonwoven cloth weight.Wherein:
The bottom fibre web is spunbond PET filament web；The fibre fineness of fiber is 2-3D.
The intermediate M layers of fibre web includes at least two layers modified melt-blown PET fibre web added with 1-5wt% water repellent auxiliary agent；It is fine
The diameter of dimension is 0.5-2 μm.
The upper layer fibre web is the spunbond PET filament web added with 0.5-3wt% water repellent auxiliary agent；The fibre fineness of fiber
For 1-1.5D.
The preparation method is as follows:
Step 1: bottom fibre web is prepared
Using IV value 0.6-0.7,255-265 DEG C of fusing point of PET slice, by Conventional spunbond nonwoven techniques, preparation is fine
The fibrous layer net of fineness 2-3D is tieed up, grammes per square metre accounting is 15-30%, as the bottom of novel waterproof air previous non-woven fabrics, this layer of nothing
Woven fabric surfaces versus rough is some, is easily bonded in the construction process with building sides, avoids the occurrence of slip phenomenon.
Step 2: intermediate M layers of fibre web are prepared
Using IV value 0.6-0.7,255-265 DEG C of fusing point of conventional PET slice, in 120-160 DEG C, crystallization in 6-12 hours
Under drying process, by moisture control within 30PPm, by the di-tert-butyl peroxide, the 0.2-1% that add 0.5-5%
Auxiliary agent (auxiliary agent used can be antioxidant, such as triphenyl phosphite), through 300-320 DEG C of excess temperature and pour inertia
It is sufficiently mixed reaction in high-speed double-screw stem extruder under gas (such as nitrogen, argon gas) protection, interrupts PET strand, is reduced
PET relative molecular mass, relative molecular mass narrow, and the mobility of PET melt are improved, after determination of ubbelohde viscometer reacts
Polymer IV value 0.35-0.45, DSC measure 255-265 DEG C of fusing point, and excellent physical property, which can be used as melt-blown PET slice, to be made
With, while the trifluoro propyl methyl silicide (such as: trifluoro propyl methyl-silicone oil) of 1-5wt% is added, in double screw extruder
Melt after interior reaction is sufficiently mixed, and die head is transported to through melt stirring, metering device, using pressure 0.1-0.3MPa temperature
300-380 DEG C of hot-air carries out drawing-off spinneret, and being prepared into fibre diameter is 0.5-2 μm, and the PET that aperture is 1.8-5 μm is meltblown
Hydrophobic fiber layer net, grammes per square metre accounting are 15-30%.
It will at least two layers of PET melt-blown hydrophobic fiber net be overlapped mutually, and increase meltblown layer ratio, reduce its aperture to 1.0-
3.0 μm, form water barrier.
Its 1, at 300 DEG C or more, melt is easily degraded system temperature, prevents melt oxidation from dropping by pouring inert gas
Solution；Agitating device is added in melt pipe, avoids a certain local location of melt from generating superheating phenomenon and causes thermal degradation, this process
And molecule chain break and strand regenerate the process cancelled out each other, and prevent thermal degradation reaction；
Its 2, add the trifluoro propyl methyl silicide of 1-5%, make meltblown layer fiber after bonding is heated, trifluoro propyl first
Base silicide releases surface, makes to be increased to 95-130 ° with water contact angle θ, plays water barrier.
Its 3, due on the market without IV value 0.35-0.45,255-265 DEG C of fusing point of melt-blown PET raw material, only by adding
The auxiliary agent of the di-tert-butyl peroxide, 0.2-1% that add 0.5-5% is reacted with routine PET slice, interrupts PET strand,
PET relative molecular mass is reduced, relative molecular mass narrows, improves the mobility of PET melt, make its melt-blown fiber diameters 0.5-
2 μm meet the requirements.
Step 3: preparation upper layer spun web
Utilize IV value 0.6-0.7,255-265 DEG C of fusing point of PET slice, by conventional crystallization drying process, by moisture content
Control is within 30ppm, by adding the trifluoro propyl methyl silicide (such as: trifluoro propyl methyl-silicone oil) of 0.5-3%, warp
300-320 DEG C of excess temperature and the lower progress double screw extruder of injection inert gas (such as nitrogen, argon gas) protection sufficiently melt mixed
It closes, die head is transported to by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes 0.3-0.4MPa's
Compressed air carries out the hydrophobic fiber layer net of preparation fibre fineness 1.0-1.5D, and grammes per square metre accounting is 25-40%, as novel anti-
The upper layer of water Breathable nonwoven makes contact angle θ be increased to 95-130 °, conveniently hydrophobic, waterproof action.
Step 4: bonding
By bottom fibre web, M layers of centre fibre web and upper layer fibre web successively laying, using upper and lower a pair of of steel rider, through excess temperature
180-260 DEG C, three-level thermal finalization under the process conditions of line pressure 40-150N/mm is prepared into novel waterproof air previous non-woven fabrics.
Wherein, three-level heat setting process, since the temperature tolerance of meltblown fibers is poorer than spun-bonded fibre, using lower than spun-bonded fibre
It melts critical-temperature and first order thermal finalization is carried out to intermediate M layers of fibre web, temperature is 180-220 DEG C, line pressure 40-80N/
mm；The is carried out to two sides spun-bonded fibre and meltblown fibers bonding using 220-260 DEG C of temperature, the technique of line pressure 80-150N/mm
Second level thermal finalization carries out third level Surface heat-treatent to novel waterproof air previous non-woven fabrics using 240-260 DEG C of temperature, obtained
Novel waterproof air previous non-woven fabrics has the function of micropore and high hydrostatic pressure resistant, is mainly used in buildings waterproof, waterproofing packing etc..
The present invention is mainly more conducive to bond using three-level heat setting process, and product is not in lamination, improves stripping
From intensity.
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 and comparative example is the test material of this field routine, can be passed through
Commercial channel is commercially available.
Embodiment 1: the preparation of waterproof and breathable compound nonwoven cloth
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 12 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 12 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 24 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 60 grams.
2. preparation method:
It is sliced using IV value 0.65,260 DEG C of fusing point of conventional PET, fibre fineness is made through conventional spunbonded nonwoven technology
For the web of 2.3D as bottom, grammes per square metre is 12 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, the trifluoro propyl of addition melt-blown pet polymer weight 1.5%
Methyl-silicone oil is transported to die head through melt stirring, metering device, carries out using 370 DEG C of pressure 0.25MPa temperature of hot-airs
Drawing-off spinneret, being prepared into fibre diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 3.6 μm, and grammes per square metre is 12 grams, paving
It is used as the second layer on the net in bottom fiber；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 12 grams.
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 1.5% by conventional crystallization drying process
Trifluoro propyl methyl silicide, by each 300-310 DEG C of area's temperature and injection nitrogen protection under carry out double screw extruder fill
Divide melting mixing, die head is transported to by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the spun-bonded fibre layer net that grammes per square metre is 24 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 24 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web carries out the to intermediate two layers of PET meltblown layer using a pair of of steel rider up and down, by 195 DEG C of first order temperature, line pressure 50N
Level-one thermal finalization；Second is carried out to two sides spun-bonded fibre and meltblown fibers bonding by 230 DEG C of second level temperature, line pressure 90N
Grade thermal finalization；Using 250 DEG C of progress Surface heat-treatents of third level temperature, the non-woven fabrics that grammes per square metre is 60 grams is prepared.
Embodiment 2: the preparation of waterproof and breathable compound nonwoven cloth
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 20 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 20 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 40 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 100 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 20 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 2.5% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.4,260 DEG C of fusing point, the trifluoro propyl of addition melt-blown pet polymer weight 1.2%
Methyl-silicone oil is transported to die head through melt stirring, metering device, carries out using 370 DEG C of pressure 0.25MPa temperature of hot-airs
Drawing-off spinneret, being prepared into fibre diameter is 1.5 μm, the melt-blown hydrophobic fiber layer net that aperture is 3.0 μm, and grammes per square metre is 20 grams, paving
It is used as the second layer on the net in bottom fiber；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 20 grams.
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 1.5% by conventional crystallization drying process
Trifluoro propyl methyl silicide, by each 300-310 DEG C of area's temperature and injection nitrogen protection under carry out double screw extruder fill
Divide melting mixing, die head is transported to by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 40 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 40 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web carries out intermediate two layers of PET meltblown layer by 210 DEG C of first order temperature, line pressure 60N using a pair of of steel rider up and down
First order thermal finalization；By 240 DEG C of second level temperature, line pressure 120N, two sides spun-bonded fibre and meltblown fibers bonding are carried out
Second level thermal finalization；Using 250 DEG C of progress Surface heat-treatents of third level temperature, the non-woven fabrics that grammes per square metre is 100 grams is prepared.
Embodiment 3: the preparation of waterproof and breathable compound nonwoven cloth
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 12 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 18 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 32 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 80 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 12 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, the trifluoro propyl of addition melt-blown pet polymer weight 1.5%
Methyl-silicone oil is transported to die head through melt stirring, metering device, carries out using 370 DEG C of pressure 0.25MPa temperature of hot-airs
Drawing-off spinneret, being prepared into fibre diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 3.0 μm, and grammes per square metre is 18 grams, paving
It is used as the second layer on the net in bottom fiber；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 18 grams；
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 1.5% by conventional crystallization drying process
Trifluoro propyl methyl silicide, by each 300-310 DEG C of area's temperature and injection nitrogen protection under carry out double screw extruder fill
Divide melting mixing, die head is transported to by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 32 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 32 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web passes through 195 DEG C of first order temperature, line pressure 70N, 230 DEG C of second level temperature, line pressure using a pair of of steel rider up and down
120N prepares the non-woven fabrics that grammes per square metre is 80 grams under the surface treatment that 250 DEG C of third level temperature.
Embodiment 4: the preparation of waterproof and breathable compound nonwoven cloth
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 18 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 30 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 42 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 120 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 18 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, the trifluoro propyl first of addition melt-blown pet polymer weight 2%
Base silicone oil is transported to die head through melt stirring, metering device, is led using 370 DEG C of hot-air of pressure 0.25MPa temperature
Spinneret is stretched, being prepared into fibre diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 2.0 μm, and grammes per square metre is 30 grams, is layered on
Bottom fiber is used as the second layer on the net；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 30 grams.
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 2% by conventional crystallization drying process
Trifluoro propyl methyl silicide, it is abundant by carrying out double screw extruder at each 300-310 DEG C of area's temperature and injection nitrogen protection
Melting mixing is transported to die head by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 42 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 42 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web passes through 210 DEG C of first order temperature, line pressure 70N, 240 DEG C of second level temperature, line pressure using a pair of of steel rider up and down
130N prepares the non-woven fabrics that grammes per square metre is 120 grams under the surface treatment that 255 DEG C of third level temperature.
Embodiment 5: the preparation of waterproof and breathable compound nonwoven cloth
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 24 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 28 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 40 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 120 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 24 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, the trifluoro propyl first of addition melt-blown pet polymer weight 2%
Base silicone oil is transported to die head through melt stirring, metering device, is led using 370 DEG C of hot-air of pressure 0.25MPa temperature
Spinneret is stretched, being prepared into fibre diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 2.8 μm, and grammes per square metre is 28 grams, is layered on
Bottom fiber is used as the second layer on the net；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 28 grams.
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 2% by conventional crystallization drying process
Trifluoro propyl methyl silicide, it is abundant by carrying out double screw extruder at each 300-310 DEG C of area's temperature and injection nitrogen protection
Melting mixing is transported to die head by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 40 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 40 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web passes through 210 DEG C of first order temperature, line pressure 70N, 240 DEG C of second level temperature, line pressure using a pair of of steel rider up and down
110N prepares 120 grams of non-woven fabrics under the surface treatment that 255 DEG C of third level temperature.
Comparative example 1:
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 12 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 12 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 24 grams.
The whole grammes per square metre of waterproof and breathable compound nonwoven cloth is 60 grams.
2. preparation method:
It is sliced using IV value 0.65,260 DEG C of fusing point of conventional PET, fibre fineness is made through conventional spunbonded nonwoven technology
For the web of 2.3D as bottom, grammes per square metre is 12 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 0.3% di-tert-butyl peroxide,
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.55,260 DEG C of fusing point, the trifluoro propyl of addition melt-blown pet polymer weight 0.5%
Methyl-silicone oil is transported to die head through melt stirring, metering device, carries out using 370 DEG C of pressure 0.25MPa temperature of hot-airs
Drawing-off spinneret, being prepared into fibre diameter is 4.7 μm, the melt-blown hydrophobic fiber layer net that aperture is 8.9 μm, and grammes per square metre is 12 grams, paving
It is used as the second layer on the net in bottom fiber；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 12 grams.
IV value 0.65 is recycled, the PET slice that 260 DEG C of fusing point passes through addition 0.3% by conventional crystallization drying process
Trifluoro propyl methyl silicide, by each 300-310 DEG C of area's temperature and injection nitrogen protection under carry out double screw extruder fill
Divide melting mixing, die head is transported to by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes
The compressed air of 0.35MPa carries out preparation fibre fineness 1.0D, the spun-bonded fibre layer net that grammes per square metre is 24 grams.
The spun-bonded fibre layer net laying that grammes per square metre is 24 grams is regard as the 4th layer in the meltblown fiber web layer of third layer, by four layers
Web carries out the to intermediate two layers of PET meltblown layer using a pair of of steel rider up and down, by 195 DEG C of first order temperature, line pressure 50N
Level-one thermal finalization；Second is carried out to two sides spun-bonded fibre and meltblown fibers bonding by 230 DEG C of second level temperature, line pressure 90N
Grade thermal finalization；Using 250 DEG C of progress Surface heat-treatents of third level temperature, the non-woven fabrics that grammes per square metre is 60 grams is prepared.
Comparative example 2:
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 40 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 10 grams；Upper layer (second
It is S layers a) it is the spunbond PET filament web for adding water repellent auxiliary agent, grammes per square metre is 40 grams.
The whole grammes per square metre of compound nonwoven cloth is 100 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 40 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 0.4% di-tert-butyl peroxide,
1% auxiliary agent and 1.2% trifluoro propyl methyl silicide, by each 305-315 DEG C of area's temperature and pour under nitrogen protection
It is sufficiently mixed reaction in high-speed double-screw stem extruder, prepares the melt-blown pet polymer of IV value 0.5,260 DEG C of fusing point, is stirred through melt
Mix, metering device is transported to die head, using 370 DEG C of pressure 0.25MPa temperature hot-airs carry out drawing-off spinneret, be prepared into fibre
Tieing up diameter is 4.5 μm, the melt-blown hydrophobic fiber layer net that aperture is 8.6 μm, and grammes per square metre is 10 grams, is layered on the online conduct of bottom fiber
The second layer；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 10 grams；Using IV value 0.65,260 DEG C of fusing point
PET slice, by conventional crystallization drying process, by the trifluoro propyl methyl silicide of addition 1.5%, by each area's temperature
The abundant melting mixing of double screw extruder is carried out under 300-310 DEG C and injection nitrogen protection, die head is transported to by metering, then is passed through
The spinneret that aperture is 0.14mm, draw ratio is 3.5 is crossed, carries out preparation fibre fineness 1.0D using the compressed air of 0.35MPa,
The hydrophobic fiber layer net that grammes per square metre is 40 grams；Pass through 210 DEG C of first order temperature, line pressure 60N, 240 DEG C of second level temperature, line pressure
120N prepares 100 grams of non-woven fabrics under the surface treatment that 250 DEG C of third level temperature.
Comparative example 3:
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 12 grams；In
(two M layers) of interbed are modified melt-blown PET fibre web, each M layers of grammes per square metre is 18 grams；(second S layers) of upper layer is spunbond PET
Filament web, grammes per square metre are 32 grams.
The whole grammes per square metre of compound nonwoven cloth is 80 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 12 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide and
1% auxiliary agent, it is anti-by being sufficiently mixed in each 305-315 DEG C of area's temperature and the high-speed double-screw stem extruder that pours under nitrogen protection
It answers, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, be transported to die head through melt stirring, metering device, using
The hot-air of 370 DEG C of pressure 0.25MPa temperature carries out drawing-off spinneret, and being prepared into fibre diameter is 1.0 μm, and aperture is 3.0 μm
Layer of meltblown fibers net, grammes per square metre are 18 grams, are layered on bottom fiber and are used as the second layer on the net；The meltblown fiber web layer of third layer and the
Two layer process are identical, and grammes per square metre is 18 grams.
Using IV value 0.65, the PET slice that 260 DEG C of fusing point, by conventional crystallization drying process, by each area's temperature 300-
310 DEG C and injection nitrogen protection under carry out the abundant melting mixing of double screw extruder, by metering be transported to die head, using hole
The spinneret that diameter is 0.14mm, draw ratio is 3.5 carries out preparation fibre fineness 1.0D, grammes per square metre using the compressed air of 0.35MPa
For 32 grams of fibrous layer net；By 195 DEG C of first order temperature, line pressure 70N, 230 DEG C of second level temperature, line pressure 120N,
80 grams of non-woven fabrics are prepared under the surface treatment that 250 DEG C of three-level temperature.
Comparative example 4:
1. structure composition:
Using SMMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 18 grams；In
(two M layers) of interbed are the modified melt-blown PET fibre web for adding water repellent auxiliary agent, each M layers of grammes per square metre is 30 grams；Upper layer (second
It is S layers a) it is spunbond PET filament web, grammes per square metre is 42 grams.
The whole grammes per square metre of compound nonwoven cloth is 120 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 18 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent and 0.4% trifluoro propyl methyl silicide, by each 305-315 DEG C of area's temperature and pour under nitrogen protection
It is sufficiently mixed reaction in high-speed double-screw stem extruder, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, is stirred through melt
Mix, metering device is transported to die head, using 370 DEG C of pressure 0.25MPa temperature hot-airs carry out drawing-off spinneret, be prepared into fibre
Tieing up diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 2.0 μm, and grammes per square metre is 30 grams, is layered on the online conduct of bottom fiber
The second layer；The meltblown fiber web layer of third layer is identical as the second layer process, and grammes per square metre is 30 grams；Using IV value 0.65,260 DEG C of fusing point
PET slice, by conventional crystallization drying process, by carrying out double spiral shells at each 300-310 DEG C of area's temperature and injection nitrogen protection
The abundant melting mixing of bar extruder is transported to die head by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5
Plate carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 42 grams using the compressed air of 0.35MPa；Pass through
210 DEG C of level-one temperature, line pressure 70N, 240 DEG C of second level temperature, line pressure 130N, the surface treatment that 255 DEG C of third level temperature
120 grams of non-woven fabrics of lower preparation.
Comparative example 5:
1. structure composition:
Using SMS frame mode, in which: (first S layers) of bottom are spunbond PET filament web, and grammes per square metre is 24 grams；It is intermediate
(M layers) of layer is the modified melt-blown PET fibre web for adding water repellent auxiliary agent, and grammes per square metre is 56 grams；(second S layers) of upper layer helps for addition water repellent
The spunbond PET filament web of agent, grammes per square metre are 40 grams.
The whole grammes per square metre of compound nonwoven cloth is 120 grams.
2. preparation method:
First with IV value 0.65,260 DEG C of fusing point of conventional PET slice, fiber is made through conventional spunbonded nonwoven technology
For the web of fineness 2.3D as bottom, grammes per square metre is 24 grams.
Using IV value 0.65,260 DEG C of fusing point conventional PET be sliced, by addition 4.7% di-tert-butyl peroxide,
1% auxiliary agent and 2% trifluoro propyl methyl silicide, by each 305-315 DEG C of area's temperature and pour the height under nitrogen protection
It is sufficiently mixed reaction in fast double screw extruder, prepares the melt-blown pet polymer of IV value 0.35,260 DEG C of fusing point, is stirred through melt
Mix, metering device is transported to die head, using 370 DEG C of pressure 0.25MPa temperature hot-airs carry out drawing-off spinneret, be prepared into fibre
Tieing up diameter is 1.0 μm, the melt-blown hydrophobic fiber layer net that aperture is 4.5 μm, and grammes per square metre is 56 grams, is layered on the online conduct of bottom fiber
The second layer；Using IV value 0.65, the PET slice that 260 DEG C of fusing point passes through the trifluoro of addition 2% by conventional crystallization drying process
Hydroxypropyl methyl silicide is sufficiently melted by carrying out double screw extruder at each 300-310 DEG C of area's temperature and injection nitrogen protection
Mixing is transported to die head by metering, using the spinneret that aperture is 0.14mm, draw ratio is 3.5, utilizes 0.35MPa's
Compressed air carries out preparation fibre fineness 1.0D, the hydrophobic fiber layer net that grammes per square metre is 40 grams；Pass through 210 DEG C of first order temperature, line
Pressure 70N, 240 DEG C of second level temperature, line pressure 110N prepare 120 grams of nonwovens under the surface treatment that 255 DEG C of third level temperature
Cloth.
Test example:
Above-described embodiment 1-5 and comparative example 1-5 carries out part inspection to the waterproof and breathable non-woven fabrics of raw material proportioning composition respectively
It surveys, detection method uses GB/T328.10 standard using testing requirements specified in JC/T2291 standard, impermeability, stretches
Strength uses GB/T328.9 standard, and steam penetrating capacity uses GB/T17146 standard, and contact angle is using the method GB/T14577 that drenches with rain
Standard, indices are as shown in table 1.
Table 1:
Embodiment 1 is compared with comparative example 1 it can be seen from 1 test result of table, at same 60 grams, 1 water of embodiment
Vapor permeation amount and impermeability are significantly increased, and wherein impermeability is 1.4 times of the latter, and is met I in JC/T2291
Class requirement；Embodiment 3 is compared with comparative example 3, at same 80 grams, the trifluoro propyl methyl silicide that adds in the present invention
Raw material and it is not added with waterproof and breathable non-woven fabrics prepared by trifluoro propyl methyl silicide, tensile strength, steam penetrating capacity
Quite, but contact angle is nearly 2 times of the latter, and rainwater is difficult to immerse non-woven fabrics internal layer, to improve impermeability index, is met
II class requirement in JC/T2291；Embodiment 5 is compared with comparative example 5, and at same 120 grams, the present invention is molten using two layers of PET
Fibrous layer is sprayed, prepared its tensile strength of waterproof and breathable non-woven fabrics, steam penetrating capacity, contact angle is substantially suitable, but impermeable
Aqueous nearly 2 times for being the latter for 185cm meet III class requirement in JC/T2291；In remaining several groups of embodiments and comparative example, into one
Step illustrates the different applicabilities to waterproof and breathable non-woven fabrics of raw material composition, ratio.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of compound nonwoven cloth of waterproof and breathable, which is characterized in that passed through by bottom fibre web, M layers of centre fibre web and upper layer fibre web
Thermal finalization forms；
The bottom fibre web is spunbond PET filament web；
The intermediate M layers of fibre web includes at least two layers modified melt-blown PET fibre web added with 1-5wt% water repellent auxiliary agent；
The upper layer fibre web is the spunbond PET filament web added with 0.5-3wt% water repellent auxiliary agent.
2. compound nonwoven cloth according to claim 1, which is characterized in that in the bottom fibre web, the fibre fineness of fiber
For 2-3D.
3. compound nonwoven cloth according to claim 1, which is characterized in that in the intermediate M layers of fibre web, the diameter of fiber is
0.5-2μm。
4. compound nonwoven cloth according to claim 1, which is characterized in that the intermediate M layers of fibre web is added with including two layers
The modified melt-blown PET fibre web of 1-5wt% water repellent auxiliary agent.
5. compound nonwoven cloth according to claim 1, which is characterized in that in the upper layer fibre web, the fibre fineness of fiber
For 1-1.5D.
6. compound nonwoven cloth according to claim 1, which is characterized in that the bottom fibre web accounts for compound nonwoven cloth weight
15-30%, the intermediate M layers of fibre web account for the 30-60% of compound nonwoven cloth weight, and the upper layer fibre web accounts for compound nonwoven cloth weight
25-40%.
7. the preparation method of compound nonwoven cloth described in any one of claims 1-6, which comprises the following steps:
(1) it the preparation of bottom fibre web: is sliced with IV value 0.6-0.7,255-265 DEG C of fusing point of PET for raw material, using spunbond legal system
It is standby to obtain the fiber web layer that fibre fineness is 2-3D, as bottom fibre web；
(2) preparation of intermediate M layers of fibre web: IV value 0.6-0.7,255-265 DEG C of fusing point of PET slice are modified, are prepared into
To IV value 0.35-0.45,255-265 DEG C of fusing point of modified PET slice, using modified PET slice as raw material, adding raw materials weight 1-
5% water repellent auxiliary agent uses the preparation of melt-spraying spinning method at aperture for 1.8-5.0 μm of melt-blown hydrophobic fiber net, will at least two layers
Melt-blown hydrophobic fiber net is overlapped, as intermediate M layers of fibre web；
(3) it the preparation of upper layer fibre web: is sliced with IV value 0.6-0.7,255-265 DEG C of fusing point of PET as raw material, is added into raw material
0.5-3wt% water repellent auxiliary agent, the hydrophobic fiber stratum reticulare for using spun-bond process that fibre fineness is prepared as 1-1.5D, as upper layer fibre
Net；
(4) thermal finalization: by bottom fibre web, M layers of centre fibre web and upper layer fibre web successively laying, in 180-260 DEG C of temperature, line pressure
Three-level thermal finalization is carried out under the process conditions of 40-150N/mm, that is, compound nonwoven cloth is prepared.
8. preparation method according to claim 7, which is characterized in that in step (2), the modified method of PET slice are as follows: will
IV value 0.6-0.7,255-265 DEG C of fusing point of PET are sliced in 120-160 DEG C of crystallizing and drying 6-12h, and moisture control is existed
Within 30PPm, the di-tert-butyl peroxide of PET coupon weight 0.5-5% and the auxiliary agent of 0.2-1% are added at 300-320 DEG C
And have under inert gas shielding in being sufficiently mixed reaction in high-speed double-screw stem extruder, it reacts to the IV value 0.35- of polymer
0.45,255-265 DEG C of fusing point.
9. preparation method according to claim 7, which is characterized in that in step (4), the three-level thermal finalization specifically:
First order thermal finalization is carried out to intermediate M layers of fibre web under conditions of 180-220 DEG C, line pressure 40-80N/mm；220-260 DEG C,
Bottom fibre web, M layers of centre fibre web and upper layer fibre web are bonded under conditions of line pressure 80-150N/mm and carry out second level thermal finalization；
Third level Surface heat-treatent is carried out under the conditions of 240-260 DEG C.
10. compound nonwoven cloth described in any one of claims 1-6 is preparing buildings waterproof ventilated membrane and/or waterproof barrier material
In application.
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| US20200399904A1 (en) * | 2019-06-24 | 2020-12-24 | Owens Corning Intellectual Capital, Llc | Roofing underlayment with hydrophobic nonwoven core |
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