CN108315875A - A kind of high-performance heat bonding non-woven fabrics and its manufacturing method - Google Patents
A kind of high-performance heat bonding non-woven fabrics and its manufacturing method Download PDFInfo
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- CN108315875A CN108315875A CN201710034633.8A CN201710034633A CN108315875A CN 108315875 A CN108315875 A CN 108315875A CN 201710034633 A CN201710034633 A CN 201710034633A CN 108315875 A CN108315875 A CN 108315875A
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- 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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
Abstract
The present invention discloses a kind of high-performance heat bonding non-woven fabrics and its manufacturing method, at least contain core-skin composite fiber, hollow antibacterial fiber and fire resistance fibre in the non-woven fabrics, fiber is in space multistory adhering state on the non-woven fabrics section direction, and the space density of the non-woven fabrics is less than 0.20g/cm3, and voidage reaches 85% or more.The heat bonding non-woven fabrics of the present invention has the characteristics that dust containing capacity height, good anti-bacterial effect, it can be applied to field of air filtration, such as automobile air conditioner filter, Domestic air purifier, building filter for air condition, toilet, filtration system used for vehicle etc., it is mainly used in filter used for automobile air conditioning.
Description
Technical field
The present invention relates to a kind of high-performance heat bonding non-woven fabrics and its manufacturing methods.
Background technology
Non-woven fabrics mainly has a dry method at net mode currently on the market, wet method, air laid, spun-bond process, meltblown etc.,
Wherein 50% or more of entire nonwoven production total amount is accounted for, the fixed network mode after dry-laying has needle based on dry-laying again
Thorn, spun lacing, chemical adhesion, heat bonding etc..For the non-woven fabrics for applying to field of air filtration, it is necessary to have highly-breathable, height
The characteristics of dust, therefore chemical dry bonding and dry method are thermally bonded the low grammes per square metre non-woven fabrics to be formed with more, but chemical adhesion
The problems such as three wastes that are generated in reinforcing process, high energy consumption, is not solved thoroughly, and in product remaining chemical agent to people
Body has side effect, such as the irritation to skin.
It is used for the non-woven fabrics in automobile air conditioner filter currently on the market generally using heat bonding non-woven fabrics, but it to hold dirt effect
The good job of fruit is usually to be determined by its processing method, its processing method is by shape after opener, cotton carding, cross lapping at present
Low-melting fiber is melted using hot-air system at composite fibre stratum reticulare, then fiber web layer hot roll is heated and is reinforced.So
And the low-melting fiber of nonwoven surface is made since heated or stress is excessive, fiber to be caused to be crushed in this way, from
And the shortcomings that venting quality declines, resistance increases, and dust containing capacity reduces.
It, should as disclosed a kind of filter material for filter core and its production method and purposes in Chinese publication CN103120872A
Web is first thermally bonded by patent in nonwoven production process, then carries out hot pressing reinforcing by upper and lower thermometal roller.This
The production technology of invention is although simple and environmentally-friendly, and filter material has good anti-flammability and preferable tensile strength.But the patent will
Fiber web layer is heated by metallic high temperature roll reinforce again, can thus be easily lead to meldable fibre and is crushed, non-woven fabrics
Bulkiness is very poor, and dust containing capacity reduces.
Invention content
The purpose of the present invention is to provide a kind of antibiotic properties, and high-performance excellent, that dust containing capacity is high is thermally bonded non-woven fabrics and its system
Make method.
Technical solution of the invention is as follows:At least contain core-sheath in the high-performance heat bonding non-woven fabrics of the present invention
Fiber, hollow antibacterial fiber and fire resistance fibre, fiber is in space multistory adhering state, the nonwoven on the non-woven fabrics section direction
The space density of cloth is less than 0.20g/cm3, and voidage reaches 85% or more.
Single fiber degree preferably 1~9dtex of core-skin composite fiber in the heat bonding non-woven fabrics of the present invention, hollow antibacterial fiber
Single fiber degree preferably 10~30dtex.
Content preferably 55~80 weight % of core-skin composite fiber, hollow antibacterial fiber in the heat bonding non-woven fabrics of the present invention
Content preferably 10~25 weight %, content preferably 10~20 weight % of fire resistance fibre.
Average fineness preferably 5.0~15.0dtex of the heat bonding non-woven fabrics of the present invention.
In 2m3Under/min air quantity, when initial stage crushing rises 150Pa, the ISO FINE A2 of heat bonding non-woven fabrics of the invention
Dust maintenance dose preferably reaches 100g/m2More than.
The gravimetric method efficiency of the heat bonding non-woven fabrics of the present invention preferably reaches 80% or more.
The beneficial effects of the invention are as follows：The heat bonding non-woven fabrics of the present invention solves previous heat bonding non-woven fabrics due to fiber
Net is heated or stress is excessive, and web is caused to be crushed to obtain defect, and heat bonding non-woven fabrics of the invention has dust containing capacity high, anti-
The good feature of bacterium effect can be applied to field of air filtration, such as automobile air conditioner filter, Domestic air purifier, building
Filter for air condition, toilet, filtration system used for vehicle etc., are mainly used in filter used for automobile air conditioning.
Description of the drawings
Fig. 1 is the cross-section diagram of present invention heat bonding non-woven fabrics under scanning electron microscope.
Specific implementation mode
At least contain core-skin composite fiber, hollow antibacterial fiber and fire-retardant fibre in the high-performance heat bonding non-woven fabrics of the present invention
It ties up, fiber is in space multistory adhering state on the non-woven fabrics section direction, and the space density of the non-woven fabrics is less than 0.20g/cm3,
And voidage reaches 85% or more.By scanning electron microscope as can be seen that section side upwardly through core-skin composite fiber in sky
Between three-dimensional adhering state, all abundant bond vitrified of fiber of the upper epidermis, middle layer, layer of the non-woven fabrics, the rate of bonding reaches
80% or more.If bonding rate is less than 80% between the fiber in the non-woven fabrics section direction, illustrate core-skin composite fiber, hollow anti-
Bacterium fiber and fire resistance fibre are not bonded fully, may only have non-woven fabrics fiber upper and lower surfaces of by heat bonding, the fibre of middle layer
Dimension cannot be bonded together due to heated insufficient, to cause non-woven fabrics tensile strength low.
It is high that the heat bonding non-woven fabrics of the present invention not only bonds rate between the fiber in section direction, and due to fluffy structure with
The presence of doughnut so that the spatial volume for being thermally bonded non-woven fabrics is bigger, therefore, be thermally bonded the space density of non-woven fabrics compared with
Low, if the space density of heat bonding non-woven fabrics is more than 0.2g/cm3, non-woven fabrics is excessively fine and close, and bulkiness is poor, non-woven fabrics
The space of storage ash becomes smaller, it is contemplated that dust containing capacity, space density preferably 0.13~0.19g/ of heat bonding non-woven fabrics of the invention
cm3.In addition, due to the presence of fluffy structure and doughnut, the voidage of heat bonding non-woven fabrics of the invention reach 85% with
On, higher voidage makes the space of non-woven fabrics storage ash become larger, and has excellent dust containing capacity.In view of the dust containing capacity of non-woven fabrics
And filter efficiency, the voidage of heat bonding non-woven fabrics of the invention preferably reach 87~91%.
The present invention heat bonding non-woven fabrics described in core-skin composite fiber single fiber degree preferably 1~9dtex, 1~9dtex it
Between fine denier core-skin composite fiber can assign non-woven fabrics smaller gap, can effectively intercept dust, improve non-woven fabrics
Filter efficiency, in addition under constant weight ratio, if fiber number is thinner, the radical of core-skin composite fiber is more, and bonding point is more, with
It can ensure that the bonding rate of non-woven fabrics.The cortex of core-skin composite fiber of the present invention is copolyester fiber（CO-PET）, cortex
Between fusing point is 100~190 DEG C, sandwich layer is common polyester fiber, and fusing point is 250~270 DEG C.
Single fiber degree preferably 10~30dtex of hollow antibacterial fiber described in the heat bonding non-woven fabrics of the present invention.10~
Heavy denier hollow antibacterial fiber between 30dtex can assign non-woven fabrics stiffness, be processed convenient for rear road paper folding, and folding shape is kept
Preferably so that filter core is unlikely to deform under Wind Volume again；In addition thicker antibacterial doughnut possesses larger hollow channel, favorably
It is moved smoothly through inside it in gas, more efficiently plays the antibacterial effect of inner surface.
The degree of hollowness preferably 50% or more of above-mentioned hollow anti-bacterial fibre, higher degree of hollowness can make the space of non-woven fabrics
Density is lower, and voidage is higher, and bulkiness is better, in addition it is also possible that the hollow inner layer sheet area of antibacterial doughnut more
Greatly, more antimicrobial components can be added, also can more effectively be contacted with bacterium.The surface layer of the hollow antibacterial fiber and hollow
Internal layer all add antimicrobial component, antimicrobial component is halogen system, quaternary ammonium salt system, thiazole system, imidazoles system, the compounds such as pyridine system,
It is preferred that the compound of pyridine system.
Content preferably 55~80 weight % of core-skin composite fiber, hollow antibacterial fiber in the heat bonding non-woven fabrics of the present invention
Content preferably 10~25 weight %, content preferably 10~20 weight % of fire resistance fibre.If core-skin fibre content is too low,
The radical of core-skin composite fiber tails off, and rate is bonded between fiber with regard to low, the tensile strength of non-woven fabrics can reduce；If core-skin fibre contains
Measure excessively high, then the content of hollow antibacterial fiber and fire resistance fibre will certainly reduce, not only the antibiotic property of non-woven fabrics can decline,
Antibacterial activity value may be less than 3.0, and voidage can also become smaller, and the space of non-woven fabrics storage ash will be made to become smaller, caused
Dust containing capacity reduces.If the content of fire resistance fibre is too low, the anti-flammability of non-woven fabrics reduces, it is difficult to meet FMVSS302 marks
It is accurate；If the too high levels of fire resistance fibre, the content of hollow antibacterial fiber and core-skin fibre will certainly be lower, that nothing
The tensile strength and antibiotic property of woven fabric can also be declined, and if fire resistance fibre too high levels, and cost also can be improved accordingly.
The fire-retardant phosphorus system substance effectively become as superior performance in fire resistance fibre of the present invention, such as 2- carboxyethyl phenyl phosphinic acids (CEPPA).
Average fineness preferably 5.0~15.0dtex of the heat bonding non-woven fabrics of the present invention, if average fineness is too small, explanation
So dense between fiber, voidage declines, and in addition also illustrates that fine fibre is relatively more, and non-woven fabrics stiffness also can will be low.But average fibre
Spend it is big if, gap is excessive between illustrating fiber, and strainability can be deteriorated, thus preferably average fineness be 5.0~
15.0dtex.Be thermally bonded non-woven fabrics average fineness preferably in the range, the stiffness and powder of the heat bonding non-woven fabrics
Dirt dust containing capacity is all high.
The fiber of nonwoven surface is due to through overheating baking processing（Fluffy processing）, fluffy structure is formed, along with hollow
The presence of fiber so that the spatial volume of non-woven fabrics is bigger, and the voidage of non-woven fabrics is also higher, and higher voidage makes nothing
The space of woven fabric storage ash becomes larger, to improve dust capaciting ability of the non-woven fabrics to dust.In 2m3Under/min air quantity, initial stage crushing
When rising 150Pa, ISO FINE A2 dust dust containing capacities reach 100g/m2More than, gravimetric method efficiency reaches 80% or more.
Wherein, ISO FINE A2 are fine dust specified in international standard ISO 12103-1.If the appearance of non-woven fabrics
If dust quantity is too low, the service life of gained filter core can be short, replaces frequently, can thus increase the cost of user.
The thickness of the high-performance heat bonding non-woven fabrics of the present invention is 0.50~0.80mm.If thickness is too thin, nothing can be caused
The bulkiness of woven fabric is poor, and dust dust containing capacity reduces.If too thick, that is, it is excessively fluffy, dust dust containing capacity improves, but by
Too small in space density, compactness is poor, and gravimetric method efficiency can be deteriorated.
The MD tensile strengths of the high-performance heat bonding non-woven fabrics of the present invention are 150N/50mm or more, and tensile strength is too low
Words are easy disconnected cloth when production and processing, increase production cost loss.
The MD stiffnesses of the high-performance heat bonding non-woven fabrics of the present invention are 150mg or more, and if stiffness is too low, paper folding adds
Working hour, paper folding are difficult to be molded, poor in processability, increase production cost loss.
The high-performance heat bonding non-woven fabrics of the present invention meets 102mm/min or less according to FMVSS302 standard burning velocities.
Contain hollow antibacterial fiber in the high-performance heat bonding non-woven fabrics of the present invention, the surface layer of fiber and hollow internal layer are all
Add antimicrobial component, according to JISL1902:2008 standards, staphylococcus aureus, Escherichia coli antibacterial activity value can reach
2.0 or more, that is, reach 99% antibacterial effect.
The manufacturing method of the high-performance heat bonding non-woven fabrics of the present invention is as follows：Core-skin composite fiber, hollow will at least be contained
Anti-bacterial fibre and fire resistance fibre form composite fiber web after opener, more storehouse mixed cotton, cotton carding, airlaid or mechanical lapping,
Hot rolling is carried out by 130~180 DEG C of hot-rolling metal roller system with 10~30 ms/min of speed again and reinforces melting, hot roll
Pressure be 60~100kg/cm2, fluffy processing is then carried out by 150~200 DEG C of hot drying cylinder again, cold pressing roller adjusts thick
Degree, last finished product.
In above-mentioned hot rolled process, 130~180 DEG C of metal a pair of of up and down is passed through with 10~30 ms/min of speed
Roll carries out hot rolling fusion reinforcements, and metallic roll heat directly by being transmitted close to cloth cover, makes within the regular hour
Web is heated to the low melting point cortex softening melting after certain temperature in core-skin composite fiber, and cortex melt-flow simultaneously condenses upon
The fiber that fiber intersection points are not melted with other, such as fire resistance fibre are bonded together.It is viscous between non-woven fabrics to improve
Node comes, and further increases the tensile strength of non-woven fabrics.Hot-rolled temperature of the present invention is if less than 130 DEG C, meldable fibre is molten
Melt it is insufficient, cause it is insufficient with the bonding of other fibers, bond rate it is relatively low, it is relatively low so as to cause the tensile strength of non-woven fabrics；
If hot-rolled temperature is higher than 180 DEG C, other than energy consumption, cost improve, excessive hot rolling can also make non-woven fabrics
So dense, after the later stage fluffy processing of hot drying cylinder, thickness increment rate is relatively low, and bulkiness is poor, and the space of non-woven fabrics storage ash becomes smaller, and holds
Dust quantity is deteriorated.Accordingly, it is considered to the tensile strength and dust containing capacity of non-woven fabrics, the temperature preferably 140 of hot-rolling metal roller of the invention
~160 DEG C.It is found in addition, being tested by hot rolling laboratory strength, if the pressure of hot roll is less than 60kg/cm2, between fiber
The rate of bonding can be relatively low, influences the tensile strength of non-woven fabrics；If the pressure of hot roll is higher than 100kg/cm2, in addition to the energy disappears
Other than consumption, cost improve, excessive hot rolling can also so that non-woven fabrics is so dense, and after the later stage fluffy processing of hot drying cylinder, thickness increases
Rate is relatively low, and bulkiness is poor, and the space of non-woven fabrics storage ash becomes smaller, and dust containing capacity is deteriorated.In view of the tensile strength and appearance of non-woven fabrics
The pressure of dust quantity, hot-rolling metal roller of the present invention is preferably 70~90kg/cm2。
Non-woven fabrics after hot rolling carries out fluffy processing by 150~200 DEG C of hot drying cylinder again, is carried out with hot drying cylinder fluffy
The purpose of processing is in order to which the non-woven fabrics after allowing heat to dry becomes fluffy, and the bulkiness of non-woven fabrics improves, and stores the space of dust
Become larger.If the temperature of hot melt cylinder is less than 150 DEG C, the thickness of non-woven fabrics dries the change of the thickness of preceding non-woven fabrics with heat after hot baking
Change is not much different, and thickness increment rate only reaches 10~50%；If the temperature of hot drying cylinder is higher than if 200 DEG C, except energy consumption,
Other than cost improves, the antimicrobial component in hollow antibacterial fiber is decomposed due to excessively heated, under the antibiotic property for leading to non-woven fabrics
Drop.The factors such as dust containing capacity, antibiotic property in view of non-woven fabrics, preferably 170~190 DEG C of the temperature of hot drying cylinder.
Preferably 10~16 pairs of the quantity of above-mentioned hot drying cylinder if the quantity of hot drying cylinder is very few, carries out heat to non-woven fabrics and dries to connect
The tactile time can reduce, the fluffing of fiber is small in non-woven fabrics, but in non-woven fabrics fiber fluffing, need filling through overheating drying cylinder
After tap is touched, and sufficient heat dries the time, good lofting effect can be only achieved, therefore the quantity of hot drying cylinder preferably 10~
16 pairs.
After above-mentioned fluffy processing, non-woven fabrics is heated to be expanded after the heat of drying cylinder is dried, by the heat of multipair drying cylinder
After baking, thickness increment rate preferably reaches 80% or more.Thickness increases so that non-woven fabrics becomes fluffy, and higher voidage makes nothing
The space of woven fabric storage ash becomes larger, and has excellent dust containing capacity.It is empty in view of excessive bulkiness can be such that the space density of non-woven fabrics reduces
Gap rate increases, and the weight efficiency of non-woven fabrics can also reduce, and the thickness increment rate of non-woven fabrics is more preferably up to 90~120%.
The present invention is further described with reference to embodiment, and the physical property in embodiment in accordance with the following methods into
Row measures.
【Space density】
Measure unit area 1m2The thickness h of non-woven fabrics（mm）, and the weight m (g) of the non-woven fabrics is measured, to calculate nonwoven
The space density of cloth, non-woven fabrics length direction equidistantly take 5 pieces of 1*1m samples, obtain average value.Its calculation formula is as follows：
Space density（g/cm3）=m/(h×0.1×1×104)。
【Voidage】
Non-woven fabrics length direction equidistantly takes 5 pieces of 1*1m samples, is averaged.According to the space density of non-woven fabrics, nonwoven is calculated
The voidage of cloth, calculation formula are as follows：
Voidage (%)=(1- space densities/polyester fiber density（1.4g/cm3）)×100.
【Grammes per square metre】
According to 1913 benchmark of JIS L, non-woven fabrics length direction equidistantly takes 5 pieces of 300*500mm samples, with precision be 0.01g with
Upper balance carries out weighing weight m（g）, to calculate the grammes per square metre of non-woven fabrics（g/m2）, take its average value.Its calculation formula is such as
Under：
Grammes per square metre（g/m2）=m*106/(300*500)。
【Thickness】
According to 1913 benchmark of JIS L, non-woven fabrics length direction equidistantly takes 5 points, its thickness is tested with thickness gauge, takes it average
Value.
【Thickness increment rate】
According to 1913 benchmark of JIS L, the thickness h 1 (mm) before hot drying cylinder heat is dried, the thickness h 2 (mm) after hot drying cylinder heat baking are tested
, non-woven fabrics length direction equidistantly takes 5 pieces of sample, obtains average value, to calculate nonwoven thickness increment rate（%）, calculate
Formula is as follows：Thickness increment rate（%）= (h2-h1)/h1*100.
【Anti-bacterial fibre degree of hollowness】
Arbitrarily taken at different 3 on every piece of sample, by Shimadzu Corporation scanning electron microscope SS-550, observe and shoot this 3
The cross-section diagram is amplified 100 times, observed per tensile fracture photo by the cross-section diagram at place（Perpendicular to photographic plane）, test out hollow anti-
The interior diameter r and overall diameter R of bacterium fiber, the cross-section diagram often located respectively test 5 hollow antibacterial fibers, obtain average value.To count
Calculate anti-bacterial fibre degree of hollowness（%）, calculation formula is as follows：
Anti-bacterial fibre degree of hollowness（%）=(r/R)2*100。
【Antibacterial activity value】
According to JISL1902:2008 standards carry out the quantitative test of strain, are trained by the disinfection of non-woven fabrics, inoculation test bacterium, bacterium
It supports, remaining bacterium colony is counted, non-woven fabrics length direction equidistantly takes 2 pieces of 1*1m samples, is averaged.To calculate each bacterium
The antibacterial activity value of kind.
【Anti-flammability (burning velocity)】
According to FMVSS302 standards (burning velocity 102mm/min or less), experiment material size：Long 356mm* wide 102mm.Work as fire
Flame is burnt at firing tip 38mm（A lines）, start timing, record time T when fray-out of flame, and the distance L of distance A lines, calculate
Go out the speed of burning.If flame combustion is less than 38mm（A lines）, burning velocity is denoted as 0mm/min, and calculation formula is as follows：
Burning velocity（mm/min）=L/T.
【Dust containing capacity】
The non-woven fabrics of sheet is put on the machine of 30 × 60 centimetres of opening size and is fixed, air quantity 2m is adjusted3The air of/min
By measuring non-woven fabrics, the dust of the ISO FINE A2 of 70mg/min concentration is then fed to test sample, when on sample resistance
When having risen 150Pa（Initial stage resistance+150Pa）, stop experiment, and weigh the dust weightening M accumulated in test sample, calculate public
Formula is as follows：
Dust dust containing capacity（g/m2）The area of=dust weightening M/ test samples（m2）,
Usually by the dust dust containing capacity above non-woven fabrics come the service life of apparent filter material indirectly, the big nothing of dust dust containing capacity
Woven fabric, service life are longer.
【Gravimetric method efficiency】
The non-woven fabrics of sheet is put on the machine of 30 × 60 centimetres of opening size and is fixed, air quantity 2m is adjusted3The air of/min
By measuring non-woven fabrics, the dust of the ISO FINE A2 of 70mg/min concentration is then fed to test sample, when on sample resistance
When having risen 150Pa（Initial stage resistance+150Pa）, stop experiment, and weigh the dust weightening M accumulated in test sample and downstream
The dust weightening m of accumulation on HEPA, calculation formula are as follows：
Gravimetric method efficiency（%）=test sample dust weightening M/（Test sample dust weightening M+HEPA dust weightening m）.
【Rate is bonded between fiber】
It is arbitrarily taken at different 3 on every piece of sample, by Shimadzu Corporation scanning electron microscope SS-550, observes and shoot this
The cross-section diagram is amplified 100 times, observed per tensile fracture photo by the cross-section diagram at 3（Perpendicular to photographic plane）, judge fiber between
Whether bond, then count the number of fiber for having bond state between the total radical of fiber and fiber in 30 tensile fracture figures,
Calculation formula is as follows：
Rate is bonded between fiber（%）=there is the total radical * of the fiber in the tensile fracture figure of the number of fiber of bond state/30 100%.
【Tensile strength】
According to the tensile strength in the directions JIS L1906 standard test non-woven fabrics MD, experiment material size：Wide 50mm* long 300mm,
Standard point is 200mm, is tested at tensile speed 100mm/min using Instron sensing equipments.
【Stiffness】
The stiffness in the directions non-woven fabrics MD is measured according to Gurley stiffness method as defined in JISL1096.Test material ruler
It is very little：89mm*25mm selects suitable range counterweight to be shown on a display screen using the size of equipment reference test bar amplitude of fluctuation
Corresponding stiffness size, arbitrary 5 places in the non-woven fabrics of the present invention sample and test, and obtain average value.
Embodiment 1
By the 1dtex core-sheaths polyester fiber of 55 weight %, the 10dtex heavy denier hollow antibacterials polyester fiber of 25 weight %, 20
The 9dtex fire-retardant polyester fibres of weight % feed intake, wherein the degree of hollowness of hollow antibacterial polyester fiber is 70%, using opening
Form composite fibre stratum reticulare after cotton, more storehouse mixed cotton, cotton carding, mechanical lapping, then with 20 ms/min of speed by 130 DEG C of temperature,
Pressure is 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 150 DEG C 10 couple fluffy
Pine processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 2
By the 9dtex core-sheaths polyester fiber of 55 weight %, the 30dtex heavy denier hollow antibacterials polyester fiber of 25 weight %, 20
The 9dtex fire-retardant polyester fibres of weight % feed intake, wherein the degree of hollowness of hollow antibacterial polyester fiber is 70%, using opening
Form composite fibre stratum reticulare after cotton, more storehouse mixed cotton, cotton carding, mechanical lapping, then with 20 ms/min of speed by 130 DEG C of temperature,
Pressure is 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 150 DEG C 10 couple fluffy
Pine processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 3
By the 4.4dtex core-sheaths polyester fiber of 55 weight %, 25 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 20 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 130 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 150 DEG C 10 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 4
By the 4.4dtex core-sheaths polyester fiber of 55 weight %, 25 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 20 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 180 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then again by 200 DEG C of the hot drying cylinder of 16 couple into
The fluffy processing of row, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 5
By the 4.4dtex core-sheaths polyester fiber of 55 weight %, 25 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 20 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 6
By the 4.4dtex core-sheaths polyester fiber of 80 weight %, 10 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 7
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Opener, more storehouse mixed cotton, cotton carding, airlaid rear formation composite fibre stratum reticulare, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 8
By the 4.4dtex core-sheaths polyester fiber of 60 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight %, 10 weight % 7dtex conventional polyesters fiber, feed intake, wherein hollow antibacterial
The degree of hollowness of polyester fiber is 70%, using opener, more storehouse mixed cotton, cotton carding, airlaid rear formation composite fibre stratum reticulare, then
Pass through 150 DEG C of temperature, pressure 80kg/cm with 20 ms/min of speed2A pair of of hot-rolling metal roller system carry out hot rolling, so
Fluffy processing is carried out by 180 DEG C of the hot drying cylinder of 13 couple again afterwards, cold pressing roller adjusts thickness, and non-woven fabrics is finally made.Heat of the invention
The physical property of bonding non-woven fabrics is shown in Table 1.
Embodiment 9
By the 4.4dtex core-sheaths polyester fiber of 90 weight %, the 16dtex heavy denier hollow antibacterials polyester fiber of 5 weight %, 5
The 9dtex fire-retardant polyester fibres of weight % feed intake, wherein the degree of hollowness of hollow antibacterial polyester fiber is 70%, using opening
Cotton, more storehouse mixed cotton, cotton carding, it is airlaid after form composite fibre stratum reticulare, then with 20 ms/min of speed by 150 DEG C of temperature,
Pressure is 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple fluffy
Pine processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 10
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Opener, more storehouse mixed cotton, cotton carding, airlaid rear formation composite fibre stratum reticulare, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Embodiment 11
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 30%, using
Opener, more storehouse mixed cotton, cotton carding, airlaid rear formation composite fibre stratum reticulare, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 180 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property that the present invention is thermally bonded non-woven fabrics is shown in Table 1.
Comparative example 1
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 120 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 140 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property of the non-woven fabrics is shown in Table 1.
Comparative example 2
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 200 is passed through with 20 ms/min of speed
DEG C, pressure 80kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then carried out again by the hot drying cylinder of 220 DEG C 13 couple
Fluffy processing, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property of the non-woven fabrics is shown in Table 1.
Comparative example 3
By the 4.4dtex core-sheaths polyester fiber of 70 weight %, 20 weight % 16dtex heavy denier hollow antibacterials polyester fiber,
The 9dtex fire-retardant polyester fibres of 10 weight % feed intake, wherein and the degree of hollowness of hollow antibacterial polyester fiber is 70%, using
Composite fibre stratum reticulare is formed after opener, more storehouse mixed cotton, cotton carding, mechanical lapping, then temperature 150 is passed through with 20 ms/min of speed
DEG C, pressure 110kg/cm2A pair of of hot-rolling metal roller system carry out hot rolling, then again by 180 DEG C of the hot drying cylinder of 13 couple into
The fluffy processing of row, cold pressing roller adjust thickness, and non-woven fabrics is finally made.The physical property of the non-woven fabrics is shown in Table 1.
Table 1
。
According to upper table,
（1）It, can when the fiber number of core-skin composite fiber and hollow antibacterial fiber is high by embodiment 1,2 and 3 it is found that under equal conditions
So that non-woven fabrics is improved through broadwise stiffness, voidage is big, is improved to the dust containing capacity of non-woven fabrics, but since average fineness becomes
Greatly, rate is bonded between fiber reduces, and can decrease to the gravimetric method efficiency of non-woven fabrics；
（2）By embodiment 3,4 and 5 it is found that under equal conditions, when hot-rolled temperature, heat baking temperature height, hot drying cylinder logarithm are more, nothing
The thickness increment rate of woven fabric can improve, and non-woven fabrics space density can be lower, and voidage becomes larger, and become to the bulkiness of non-woven fabrics
It is good, therefore dust containing capacity becomes larger.In addition, core-skin fibre can be melted preferably, rate is bonded between fiber to be improved, therefore the warp of non-woven fabrics
Broadwise tensile strength becomes larger；
（3）By embodiment 5,6 and 7 it is found that under equal conditions, when the content of core-skin composite fiber improves, interfibrous bonding
Rate can be improved, and non-woven fabrics increases through broadwise tensile strength, and the bonding point of fire-retardant dust increases, therefore the weight of non-woven fabrics
Method efficiency can be improved；
（4）By embodiment 10 and comparative example 1 it is found that under equal conditions, when the hot-rolled temperature of the latter and too low heat baking temperature, skin
Core composite fibre cannot be melted fully, and bonding rate is very low between fiber, and non-woven fabrics is less than 150N/50mm through broadwise tensile strength,
And non-woven fabrics space density can become larger, and voidage becomes smaller, and causes the bulkiness of non-woven fabrics poor, holds dirt to the dust of non-woven fabrics
Amount is poor；
（5）By embodiment 10 and comparative example 2 it is found that under equal conditions, when the latter hot-rolled temperature and heat dry when the temperature is excessively high, by
It can so that non-woven fabrics is too fine and close in excessive hot rolling, even if the temperature that heat is dried is very high, it is also difficult to so that thickness fully increases, lead
Cause the bulkiness of non-woven fabrics poor, it is poor to the dust dust containing capacity of non-woven fabrics；In addition excessively high Temperature Treatment so that non-woven fabrics resists
Bacterium activity value is very low；
（6）By embodiment 10 and comparative example 3 it is found that under equal conditions, when the hot rolling hypertonia of the latter, due to excessive heat
Rolling can so that non-woven fabrics is too fine and close, even if the temperature that heat is dried is very high, it is also difficult to so that thickness fully increases, lead to non-woven fabrics
Bulkiness is poor, poor to the dust dust containing capacity of non-woven fabrics.
Claims (9)
1. a kind of high-performance is thermally bonded non-woven fabrics, it is characterised in that：At least contain core-skin composite fiber, hollow anti-in the non-woven fabrics
Bacterium fiber and fire resistance fibre, fiber is in space multistory adhering state, the space density of the non-woven fabrics on the non-woven fabrics section direction
Less than 0.20g/cm3, and voidage reaches 85% or more.
2. high-performance according to claim 1 is thermally bonded non-woven fabrics, it is characterised in that：The single fiber of the core-skin composite fiber
Degree is 1~9dtex, the single fiber degree of hollow antibacterial fiber is 10~30dtex.
3. high-performance according to claim 1 is thermally bonded non-woven fabrics, it is characterised in that：The content of the core-skin composite fiber
Content for 55~80 weight %, hollow antibacterial fiber is 10~25 weight %, and the content of fire resistance fibre is 10~20 weight %.
4. high-performance according to claim 1 is thermally bonded non-woven fabrics, it is characterised in that：The average fineness of the non-woven fabrics is
5.0~15.0dtex.
5. high-performance according to claim 1 or 2 is thermally bonded non-woven fabrics, it is characterised in that：In 2m3Under/min air quantity, initial stage
When crushing rises 150Pa, the ISO FINE A2 dust dust containing capacities of the non-woven fabrics reach 100g/m2More than.
6. high-performance according to claim 1 or 2 is thermally bonded non-woven fabrics, it is characterised in that：The gravimetric method of the non-woven fabrics is imitated
Rate reaches 80% or more.
7. a kind of manufacturing method of high-performance heat bonding non-woven fabrics described in claim 1, it is characterised in that：Skin will at least be contained
Core composite fibre, hollow antibacterial fiber and fire resistance fibre are after opener, more storehouse mixed cotton, cotton carding, airlaid or mechanical lapping
Composite fiber web is formed, then hot rolling is carried out by 130~180 DEG C of hot-rolling metal roller system with 10~30 ms/min of speed
Melting is reinforced, the pressure of hot roll is 60~100kg/cm2, fluffy place is then carried out by 150~200 DEG C of hot drying cylinder again
Reason, cold pressing roller adjust thickness, last finished product.
8. the manufacturing method of high-performance heat bonding non-woven fabrics according to claim 7, it is characterised in that：The hot drying cylinder
Quantity is 10~16 pairs.
9. the manufacturing method of high-performance heat bonding non-woven fabrics according to claim 7, it is characterised in that：The fluffy processing
Afterwards, 80% or more the thickness increment rate of the non-woven fabrics.
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