CN1133365A - Composite fibre nonwoven cloth - Google Patents
Composite fibre nonwoven cloth Download PDFInfo
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- CN1133365A CN1133365A CN95117161A CN95117161A CN1133365A CN 1133365 A CN1133365 A CN 1133365A CN 95117161 A CN95117161 A CN 95117161A CN 95117161 A CN95117161 A CN 95117161A CN 1133365 A CN1133365 A CN 1133365A
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- resin
- composite fibre
- nonwoven cloth
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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
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/28—Formation of filaments, threads, or the like while mixing different spinning solutions or melts during the spinning operation; Spinnerette packs therefor
- D01D5/30—Conjugate filaments; Spinnerette packs therefor
- D01D5/34—Core-skin structure; Spinnerette packs therefor
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
A conjugate fiber nonwoven fabric excellent in rigidity, tensile strength and pleating and having low loss of pressure and a backing material for filter and a filter material composed of the conjugate fiber nonwoven fabric are provided. This conjugate fiber nonwoven fabric contains a small-sized fiber (A) having 10-25 mu m fiber diameter and a large-sized fiber (B) having 30-50 mu m fiber diameter in (30/70) to (70/30) blending ratio and the small-sized fiber (A) and the large-sized fiber (B) have high melting resin parts, and further, at least one of the small-sized fiber (A) and the large-sized fiber (B) has a low-melting resin part. The backing material for filter and the filter material are each composed of this conjugate fiber nonwoven fabric.
Description
The present invention relates to composite fibre nonwoven cloth, especially with the sort of composite fibre nonwoven cloth with aided filter material (gasket material) good rigidity, tensile strength and rivel processing characteristics, that can be suitable for doing filtering material and relevant the filtering material of this composite fibre nonwoven cloth as the aided filter layer.
One after another the filtering material of the nonwoven fabric of the high permanently-polarised ground dielectricization of arresting efficiency, perhaps considering to use other places in recent years as the filter of using in the filter of building use in refrigeration system, filter that air cleaner is used, filter that dust catcher is used, filter that air regulator is used, the automobile bodies etc.This permanently-polarised ground dielectric nonwoven fabric is with in addition permanently-polarised ground dielectric processing and making of nonwoven fabric, perhaps the set such as fiber of permanently-polarised ground dielectric processing, make after being shaped.Though this permanently-polarised ground dielectric nonwoven fabric when individualism, the arresting efficiency at initial stage is higher, but because the influence of the dust that is captured, can make the very fast decline of arresting efficiency at short notice, capture the life-span weak point, and mechanical strengths such as rigidity and tensile strength are lower, DIMENSIONAL STABILITY is relatively poor, thereby, be difficult to satisfy individually purposes and used with requiring.In addition, for increase filtering material with the contact area that is filtered air, improve arresting efficiency, all adopt rivel processing usually, but because mechanical strengths such as rigidity are low, thereby the DIMENSIONAL STABILITY etc. that also has rivel the to add man-hour shortcoming that can descend.
Therefore, so far also attempting aided filter material (lining hot material) be layered on this permanently-polarised ground dielectric nonwoven fabric, to strengthen mechanical strength such as rigidity, the arresting efficiency and the capture life-span of in advance thick dust being caught, improving whereby the main filtering material that constitutes by permanently-polarised ground dielectric nonwoven fabric simultaneously with the lining hot material.Also be used as this gasket material polyethylene terephthalate (PET) fiber impregnation vinyl chloride resin or with the viscose that ethene-vinyl acetate copolymer resin constitutes with the nonwoven fabric that dry type nonwoven fabric manufacturing process makes.
The gasket material that these filters are used has these requirements, promptly 1. because otherwise influence the aeration of filtering material, thereby the pressure loss wants chi possible little; 2. blast there is enough intensity; Process under the occasion in shapes such as carrying out rivel, the increase that can suppress to wait because of the slurry that overflows for the shape that keeps processing the pressure loss of distortion formation is arranged; 3. there are good shapings such as rivel to add the processability in man-hour.
But above-mentioned existing gasket material owing in order to improve resin or the viscose glue that rigidity adds the space in the nonwoven fabric being buried, reduces crack, chamber rate, thereby the shortcoming that has the pressure loss to increase.In addition, because rigidity, tensile strength and rivel processing characteristics are also insufficient, thereby also have because of shaping such as bending machining cause the pressure loss and increase or make problem such as capture performance reduction.General under weight one stable condition of per unit area, if just can obtain the low nonwoven fabric of the pressure loss with the big fiber of diameter.But when fibre diameter is increased, rigidity is reduced, make the rivel processing characteristics insufficient.On the other hand,, rigidity is increased, make the rivel processing characteristics good when fibre diameter is reduced, but because the pressure loss is increased, thereby this method can not practical application.
It is all very good that the 1st purpose of the present invention provides rigidity, tensile strength and rivel processing characteristics, can be suitable for doing the composite fibre nonwoven cloth of the gasket material of filtering material.
The 2nd purpose of the present invention provides a kind of low pressure loss, the gasket material that the filter that rigidity, tensile strength and rivel processing characteristics are all very good is used.
And the 3rd purpose of the present invention provide a kind of above-mentioned composite fibre nonwoven cloth as gasket material, low pressure loss, good initial stage arresting efficiency is arranged and is arranged and all very good filtering material of rigidity, tensile strength and rivel processing characteristics the long capture life-span.
In order to solve the above problems, composite fibre nonwoven cloth provided by the invention is that to contain blending rate [(A)/(B)] be that the diameter of 30/70～70/30 (weight ratio) is the small diameter fibers (A) of 10～25 μ m and the blend fibre nonwoven fabric of the large-diameter fiber (B) that diameter is 30～50 μ m; Small diameter fibers (A) and large-diameter fiber (B) have the resin with high melting point part respectively, and have at least a side also to contain the low-melting-point resin part in small diameter fibers (A) and the large-diameter fiber (B).
The 1st kind of embodiment of the present invention provides the composite fibre nonwoven cloth that above-mentioned small diameter fibers (A) has low-melting-point resin part and resin with high melting point part.
The 2nd kind of embodiment of the present invention provides the composite fibre nonwoven cloth that above-mentioned small diameter fibers (A) and large-diameter fiber (B) all have low-melting-point resin portion and resin with high melting point portion.
At least one side that the 3rd kind of embodiment of the present invention provides in above-mentioned small diameter fibers (A) and the large-diameter fiber (B) has resin with high melting point portion and low-melting-point resin portion, is the composite fibre nonwoven cloth that skin-core structure is arranged that constitutes skin zone with fusing point at the core of the formation of the resin with high melting point more than 150 ℃ fiber, with fusing point at 90～130 ℃ low-melting-point resin.
The 4th kind of embodiment of the present invention provides in above-mentioned small diameter fibers (A) and the large-diameter fiber (B) has at least a side to have the composite fibre nonwoven cloth of parallel type structure.
The present invention also provides a kind of filter gasket material that is made of composite fibre nonwoven cloth.
The present invention also provides a kind of have the aided filter layer that is made of composite fibre nonwoven cloth and the filtering material of main filter course, and main filter course wherein is to be made of the permanently-polarised ground dielectric nonwoven fabric that is layered on the above-mentioned composite fibre nonwoven cloth.
Below, explain composite fibre nonwoven cloth of the present invention (in the explanation it being called " nonwoven fabric of the present invention " below).
Nonwoven fabric of the present invention is the blend fibre nonwoven fabric that contains different small diameter fibers of fibre diameter (A) and large-diameter fiber (B).Therefore, the present invention is by solving the problems referred to above constituting nonwoven fabric after small diameter fibers (A) and large-diameter fiber (B) blending.
In nonwoven fabric of the present invention, low and deviation of weight excellent in uniform, local thickness and per unit area is little in order to obtain the pressure loss, can be suitable for doing the nonwoven fabric of the gasket material that filter uses, small diameter fibers (A) is to be the fiber of 10～25 μ m with diameter.
In order to obtain the little and nonwoven fabric large-diameter fiber (B) that rigidity is high, the rivel processing characteristics is good is suitable for doing the gasket material that filter uses of the pressure loss is to be the fiber of 30～50 μ m with diameter.
Though constitute the not restriction especially of length of the fiber of nonwoven fabric of the present invention, can select suitable scope according to manufacture method.For example, in utilizing the dry method of carding machine, usually the length of small diameter fibers (A) is taken at about 30～100mm, preferably 45～75mm.Usually the length of large-diameter fiber (B) is taken at about 30～100mm, preferably 45～75mm.
In nonwoven fabric of the present invention, the pressure loss is little in order to obtain, the nonwoven fabric of filter with gasket material done in rigidity and tensile strength height and good being suitable for of rivel processing characteristics, containing of small diameter fibers (A) and large-diameter fiber (B) be proportional, be that blending ratio (A)/(B) is 30/70～70/30 weight ratio, and consider the pressure loss, the balance of rigidity, tensile strength and the dust maintenance dose of the nonwoven fabric after being shaped, preferably 40/60～60/40.
In addition, in nonwoven fabric of the present invention, small diameter fibers (A) is distributed equably along nonwoven fabric integral body with identical blending ratio with large-diameter fiber (B), small diameter fibers (A) is distributed with different blending ratios with large-diameter fiber (B).For example, along the thickness direction of nonwoven fabric, change the distribution of blending ratio (A)/(B) gradually.
In nonwoven fabric of the present invention, all total respectively low-melting-point resin part of above-mentioned small diameter fibers (A) and large-diameter fiber (B) and resin with high melting point part.This low-melting-point resin portion and resin with high melting point portion are so long as coexist as a structure in the fiber, and no matter containing with any form can.For example, this low-melting-point resin portion and resin with high melting point portion can have any structures such as skin-core structure, parallel type structure.In the present invention, so-called skin-core structure is meant the skin zone that is referred to constitute by the low melting point tree round the core that is made of resin with high melting point, has with the core structure that is the axle center, is the section configuration of skin zone eccentric or not eccentric state encirclement core.And so-called parallel type structure is meant resin with high melting point and low-melting-point resin all is squeezed into the fiber section with resin with high melting point portion and low-melting-point resin coexistence, and resin with high melting point portion and the both sides of low-melting-point resin portion form the structure of part fiber outer peripheral face respectively.
In the present invention above-mentioned small diameter fibers (A) or large-diameter fiber (B) have under the occasion of skin-core structure, in order to obtain having the nonwoven fabric of abundant rigidity and tensile strength, can get into 20/80～80/20 to the basal area of the core/skin zone in skin-core structure ratio, preferably 40/60～60/40.
And have under the occasion of parallel type structure at small diameter fibers (A) or large-diameter fiber (B), in order to obtain having the nonwoven fabric of sufficient rigidity and tensile strength, the basal area of the resin with high melting point/low-melting-point resin in the parallel type structure is than desirable one-tenth 20/80～80/20, and preferably 40/60～60/40.
In nonwoven fabric of the present invention, small diameter fibers (A) and large-diameter fiber (B) form nonwoven fabric with the state of obvolvent, each resin with high melting point portion of small diameter fibers (A) and large-diameter fiber (B) has the function of shape-retaining substance, and each low-melting-point resin portion has the function of adhesives.That is to say that in nonwoven fabric of the present invention, hot melt ground connection is combined, bonding mutually on the obvolvent of each low-melting-point resin portion part for small diameter fibers (A) and large-diameter fiber (B).
In addition, resin with high melting point portion more than 150 ℃, preferably is made of the high melt point thermoplastic resin of fusing point more than 200 ℃ fusing point.Can be used as having of this high melt point thermoplastic resin, for example polyamino resin such as pet resin, nylon, poly-4-methyl isophthalic acid-the eleventh of the twelve Earthly Branches olefine resin, acrylic resin, polyhenylene vulcanize fluororesin such as thing (PPs), cyclic olefine copolymer, polytetrafluoroethylene (PTFE), second TFE copolymer etc.In addition also just like constituting by acrylic fiber, vinylon fiber, typel etc.In the present invention, resin with high melting point portion can or constitute more than 2 kinds by independent a kind of high melt point thermoplastic resin.Even in these resins, also be with thermoplastic resin with the crystallization temperature between 120 ℃～200 ℃ for well, poly terephthalic acid ethylene glycol resin etc. for example.
Constituting the small diameter fibers (A) of nonwoven fabric of the present invention and the low-melting-point resin portion of large-diameter fiber (B) is that fusing point is 90 ℃～13 ℃ a low melting point thermoplastic resin, is that 100 ℃～120 ℃ low melting point thermoplastic resin constitutes by fusing point preferably.In the present invention, for the low melting point thermoplastic resin that can not measure fusing point clearly, be to be 50g/m softening temperature or in the weight that forms unit are
2Under the nonwoven fabric occasion, make tensile strength become the minimum heating-up temperature of 3kg/5cm as fusing point.The resin that fusing point is discontented 90 ℃ adds man-hour forming with the embossing roller of heat or the calender of heat etc., can be attached on the calender of the embossing roller of heat, heat and cause the forming property deterioration; The resin of fusing point above 130 ℃ has the problem that can not obtain sufficient tensile strength.In the present invention, fusing point is the temperature according to the peak value measurement on the endothermic curve of measuring with index error sweep type calorimeter.Can be used as this low melting point thermoplastic resin just like, polyethylene, PET copolymer, polyolefin copolymer etc.Low-melting-point resin portion in the present invention can be formed by independent a kind of low melting point thermoplastic resin, also available formation more than 2 kinds.
For the nonwoven fabric that can obtain having sufficient rigidity, good rivel processing characteristics and tensile strength are arranged, the pressure loss is low, usually the weight of per unit area of the present invention is taken as 50～150g/m
2About, 70～130g/m preferably
2And thickness is normally about 0.5-1.5mm.
There is no particular limitation in the manufacturing of nonwoven fabric of the present invention, for example can carry out according to any methods such as non-woven method, dry process, damp process.For example, when adopting non-woven manufactured, be respectively with extruder after high melt point thermoplastic resin and the fusion of low melting point thermoplastic resin, from same mould, become core skin structure (eccentric or with one heart) state to squeeze out side by side, side by side form small diameter fibers (A) and large-diameter fiber (B) separately, collect on the screen cloth belt and form nonwoven fabric.A kind of method in addition is after ready-made small diameter fibers and large-diameter fiber ratio in accordance with regulations are fed to carding machine, form fiber web, by operations such as calendering processed to the embossing processed of this fibroreticulate heat, heat, the mutual heat of low-melting-point resin portion is fused and form laminar.Then behind the composite wafer lamination, make their heat fuse the method that connects with hot roll, hot blast etc. with being integral.Any method in these methods, in order to obtain having sufficient rigidity, the good rivel processing characteristics and the nonwoven fabric of tensile strength to be arranged, all must use heat treatment, low-melting-point resin portion as media its heat is fused, small diameter fibers (A) and large-diameter fiber (B) are linked into an integrated entity.For example, method with hot roll such as the embossing roller of heat, the calender of heat, in order to obtain having the nonwoven fabric of sufficient rigidity and good processability, available a kind of temperature the surface portion that is not clamminess of roll is got into the hot roll about 120～200 ℃, preferably uses the hot roll about 130～180 ℃.
In addition, nonwoven fabric of the present invention also can make it have desired characteristics such as anti-flammability, antibiotic property, mildew resistance, deodorization except above-mentioned small diameter fibers (A) and large-diameter fiber (B) are arranged as required.Can make it contain fire retardant, antiseptic, mould inhibitor, deodorant etc. as required for this reason.In order to make it have these characteristics, for example make under its occasion that contains fire retardant, the available method that is blended in advance in small diameter fibers (A) or the large-diameter fiber (B), perhaps fire retardant be sprayed on the non-woven fabrics fiber, be impregnated on the non-woven fabrics fiber or method such as coating in any method carry out.
Nonwoven fabric of the present invention, the tensile strength of longitudinal and transverse direction are more than the 8kg/5cm, preferably more than the 10kg/5cm; Horizontal hard draw degree (rigidity) is 5kg/cm
2More than, 6kg/cm preferably
2More than; And be that the pressure loss among the 1m/sec is below the 5.0mmAq at wind speed, preferably below the 3.0mmAq.Nonwoven fabric of the present invention can be used as the gasket material of filter well.
The present invention also provides a kind of filtering material with the cushioning material layer that is made of above-mentioned composite fibre nonwoven cloth and the main filter course that is made of other stacked on this composite fibre nonwoven cloth nonwoven fabric.The nonwoven fabric of for example making that has that can be used as other nonwoven fabric with nonwoven processes, dry process, damp process, melt-blown method etc.
The present invention also provides a kind of filtering material of the main filter course that has the cushioning material layer that is made of above-mentioned composite fibre nonwoven cloth and be made of permanently-polarised ground dielectric nonwoven fabric.
In filter course of the present invention, cushioning material layer is fitted over the upstream side of used filtering material, has the effect of the thick dust of before main filter course capture, and the effect that improves rigidity, tensile strength and rivel processing characteristics is arranged.
In filtering material of the present invention, main filter course can be made of other nonwoven fabric more than 1 layer or 2 layers.In addition, in the filtering material of the present invention, except cushioning material layer and main filter course, also layer of cover material more than 1 layer can be arranged as required.This layer of cover material can be arranged on the upstream side of cushioning material layer, also can be arranged on the downstream of main filter course.
In addition, under the bigger occasion of the particle diameter of the dust that filtering material of the present invention filtered, also can be composite fibre nonwoven cloth of the present invention with the filter course of deciding.
The manufacturing of the permanently-polarised ground dielectric nonwoven fabric of the main filter course as filtering material of the present invention limits especially, for example can be with melt-blown method, non-woven method, cloth cover hand pick method, the nonwoven fabric that divides comb method etc. to form, with polarize the forever method of ground dielectric processing of usual way; Perhaps is divided the film of handling through permanently-polarised ground dielectric etc. the permanently-polarised ground dielectric chemical fibre of comb back gained to tie up the method for formation nonwoven fabric, also available other any methods are made.
The manufacturing of filtering material of the present invention also can be overlapping composite fibre nonwoven cloth of the invention described above and permanently-polarised ground dielectric nonwoven fabric, and make both bonding, processes by suitable rivel and carry out.Bonding available ultrasonic wave, hot roll, hot blast etc. carry out.
Filtering material of the present invention except above-mentioned main filter course and gasket material, the thin slice that contains the thin slice of activated carbon on also can overlapping as required applying, constitutes by activated carbon fiber.
The processing of the rivel of filtering material of the present invention has no particular limits, and can adopt normally used method, for example with the revolution mode, move back and forth method such as mode.
Below, exemplify embodiment and come the present invention is described more specifically, but the present invention is not limited to these embodiment.
(EXAMPLE l～3)
In each embodiment, be fibre diameter the pet resin system of 20 μ m (4d) core skin structure fiber (fusing point of core (below, all be that [Perkin-Elmer company makes with index error sweep type calorimeter, DSC7B] measure): 251 ℃, the fusing point of skin zone: 110 ℃) and fibre diameter be core skin structure fiber (251 ℃ of the fusing points of core of the pet resin system of 40 μ m (15d), the fusing point of skin zone is 110 ℃), after carrying out blending by the blending ratio shown in the table 1, be fed to carding machine, the weight that forms unit are is 10g/m
2Fiber web.After being stacked in this fiber web on the conveyer belt then, being fed to roller temperature with the speed of 10m/min is that gap between 140 ℃, roller is adjusted on the hot roll of 0.1mm, and the weight of making unit are is 80g/m
2, thickness is the nonwoven fabric of 0.7mm.
By following method, measure the pressure loss, fusing point, rivel processability, the rigidity and the tensile strength of prepared nonwoven fabric or estimate, the results are shown in the table 1.
(pressure loss)
The determinator mensuration pressure loss of representing its overview with Fig. 1.
Make air blast 1 action earlier, make the air in the chamber 2 adjust flow, be attracted simultaneously by flow rate regulating valve 4 by flow route 3 backs.When the velocity of liquid assets of measuring with current meter 5 becomes certain speed (1.0m/sec), with pressure gauge 7 measure be provided on the flow route 3, in that (upstream side of 250mm * 250mm) and the pressure differential on the downstream are tried to achieve the pressure loss (mmAq) as the composite fibre nonwoven cloth 6 of determination object.The 8th, the air that is directed in the chamber 2 is filtered the filter of usefulness.
(fusing point)
With ASTM D3418-75 is benchmark, with 10 ℃/minute programming rates temperature is elevated to 290 ℃, measures fusing point simultaneously.
(rivel processing characteristics)
The folding line ground that forms peak height 3cm, spacing 5mm is folding composite fibre nonwoven cloth, and two ends were placed 24 hours regularly.Then, with following benchmark evaluation rivel processing characteristics.
Zero ... the peak portion of folding line acutangulates, the crest of adjacency is held in jagged rivel shape each other non-contiguously.
* ... the peak portion of folding line becomes at circular arc, can see that the crest of adjacency contacts each other, and section is arc shape.
(rigidity)
With JIS L1096 is benchmark, uses Handle-O-Metet, and with blade decline 8mm, the mensuration amplitude is that 17 * 140mm, slit amplitude are the test film of 10mm.
(tensile strength)
With the JCFA specification is benchmark, is that 200mm/ branch, chuck spacing are 100mm with the draw speed, and the mensuration amplitude is the test film of 50 * 200mm.
(comparative example 1～2)
In each example, make fiber web with blending ratio listed in the table 1, make composite fibre nonwoven cloth in the same manner with embodiment, measure or estimate the pressure loss, rivel processing characteristics, rigidity and tensile strength.The results are shown in the table 2.
(embodiment 4～7)
At each embodiment, except the side in small diameter fibers and the large-diameter fiber being replaced to the fiber (fusing point: 253 ℃) that constitutes by the pet resin that does not have low-melting-point resin portion, make beyond the fiber web with the blending ratio shown in the table 2, make composite fibre nonwoven cloth in the same manner with embodiment 1.To the nonwoven fabric that makes, the mensuration identical or estimate the pressure loss, fusing point, rivel processing characteristics, rigidity and tensile strength with embodiment 1.The results are shown in the table 1.
(comparative example 3)
Except small diameter fibers and large-diameter fiber being got the fiber that constitutes by the pet resin that does not have low-melting-point resin portion (fusing point: 253 ℃), manufacture experimently composite fibre nonwoven cloth in the same manner with embodiment 1, but the joint between the discovery fiber is insufficient, can not form composite fibre nonwoven cloth.
(comparative example 4)
Except being the core skin structure fiber (fusing point of core: 251 ℃, the fusing point of skin zone: 110 ℃) of the pet resin formation of 20 μ m (4d) only, make nonwoven fabric in the same manner with embodiment 1 with fibre diameter.
Nonwoven fabric and the embodiment 1 that makes carried out the mensuration or the evaluation of the pressure loss, fusing point and crystallization temperature, rivel processing characteristics, rigidity and tensile strength in the same manner.The results are shown in the table 2.
(comparative example 5)
Is fibre diameter the core skin structure fiber that constitutes of the poly terephthalic acid diethyl alcohol ester resin of 20 μ m (4d) (fusing point of core: 251 ℃, the fusing point of skin zone: 110 ℃), with fibre diameter be the fiber (fusing point: 253 ℃) that the poly terephthalic acid diethyl alcohol ester resin of the low-melting-point resin portion of containing of 20 μ m (4d) constitutes, after 40/60 blending ratio blending, make composite fibre nonwoven cloth in the same manner with embodiment 1, then this nonwoven fabric is carried out the mensuration or the evaluation of the pressure loss, rivel processing characteristics, rigidity and tensile strength.The results are shown in the table 2.
(comparative example 6)
Is fibre diameter that the core skin structure fiber that constitutes of the poly terephthalic acid diethyl alcohol ester resin of 10 μ m (1d) (fusing point of core: 251 ℃, the fusing point of skin zone: 110 ℃) and fibre diameter are the fiber (fusing point: 253 ℃) of poly terephthalic acid diethyl alcohol ester resin formation of the low-melting-point resin portion of containing of 20 μ m (4d), after 50/50 blending ratio blending, identical with embodiment 1 composite fibre nonwoven cloth of making.
In the same manner the composite fibre nonwoven cloth that makes is carried out the mensuration and the evaluation of the pressure loss, rivel processing characteristics, rigidity and tensile strength with embodiment 1.The results are shown in the table 2.
Table 1
Annotate (n): the fiber that does not contain low-melting-point resin portion
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | ||
| The blending ratio of small diameter fibers/large-diameter fiber (weight ratio) | ????50/50 | ????60/40 | ????40/60 | ????50/50 ?????(n) | ?????50/50 ??????(n) | ?????70/30 ??????(n) | ????30/70 ?????(n) | |
| Fibre diameter (small diameter fibers/large-diameter fiber) (μ m) | ????20/40 | ????20/40 | ????20/40 | ????20/40 ?????(n) | ?????20/40 ??????(n) | ?????20/40 ??????(n) | ????20/40 ?????(n) | |
| Weight (the g/m of unit are 2) | ??????80 | ??????80 | ??????80 | ??????80 | ??????80 | ??????80 | ??????80 | |
| The pressure loss (mmH 2O) | ??????1.0 | ??????2.5 | ??????1.6 | ??????1.6 | ??????1.4 | ??????2.8 | ??????1.2 | |
| The processing characteristics of rivel | ??????○ | ??????○ | ??????○ | ??????○ | ???????○ | ??????○ | ??????○ | |
| Rigidity (transverse direction) | Yield point stress (kg/cm 2) | ??????7.7 | ??????8.4 | ??????7.0 | ??????5.5 | ??????5.2 | ??????6.4 | ??????5.2 |
| Tensile test (vertical/horizontal stroke) | Tensile strength (kg/5cm) | ???13.0/13.5 | ???14.0/14.3 | ???11.9/12.4 | ???9.6/10.0 | ????9.1/9.5 | ???11.0/11.3 | ????8.3/8.6 |
Table 2
Annotate * 1: (n) can not be shaped: the fiber that does not contain low-melting-point resin portion
| Comparative example 1 | Comparative example 2 | Comparative example 3 | Comparative example 4 | Comparative example 5 | Comparative example 6 | ||
| The blending ratio of small diameter fibers/large-diameter fiber (weight ratio) | ????80/20 | ?????20/80 | ??50/50 ?(n)??(n) | ??????100/0 | ????40/60 ?????(n) | ?????50/50 ??????(n) | |
| Fibre diameter (small diameter fibers/large-diameter fiber) (μ m) | ????20/40 | ?????20/40 | ???20/40 ?(n)??(n) | ???????20/- | ????20/20 ?????(n) | ?????10/20 ??????(n) | |
| Weight (the g/m of unit are 2) | ??????80 | ???????80 | ??????80 | ????????80 | ???????80 | ??????80 | |
| The pressure loss (mmH 2O) | ??????5.3 | ???????1.2 | ?????-*1 | ????????8.1 | ??????7.4 | ??????9.5 | |
| The processing characteristics of rivel | ??????○ | ???????× | ?????-*1 | ????????○ | ???????○ | ???????○ | |
| Rigidity (transverse direction) | Yield point stress (kg/cm 2) | ??????9.2 | ???????4.8 | ?????-*1 | ????????11.7 | ?????10.4 | ??????10.8 |
| Tensile test (vertical/horizontal stroke) | Tensile strength (kg/5cm) | ???15.6/15.8 | ??????9.1/9.4 | ?????-*1 | ??????16.8/17.3 | ???15.2/15.8 | ???16.1/16.4 |
Composite fibre nonwoven cloth of the present invention is owing to have good rigidity, tensile strength and rivel processing characteristics, thereby is the gasket material that can be suitable for preferably doing filtering material.
The gasket material that filter of the present invention is used is the characteristic that has effectively utilized above-mentioned composite fibre nonwoven cloth, and being has good low pressure loss, rigidity, tensile strength and rivel processing characteristics.
Again because filtering material of the present invention has the aided filter layer that is made of above-mentioned composite fibre nonwoven cloth, thereby have the arresting efficiency that forms because of the lower pressure loss, and good rigidity, rivel processing characteristics and tensile strength are grown, had to the capture life-span. Therefore, filtering material of the present invention can be used as building use in refrigeration system filter, air cleaning machine with filter, dust catcher with filter, the air regulator filtering material with filter of using in filter, the automobile bodies etc.
Claims (14)
1. composite fibre nonwoven cloth, it is characterized in that: it is that to contain blending rate [(A)/(B)] be that the diameter of 30/70～70/30 (weight ratio) is the small diameter fibers (A) of 10～25 μ m and the blend fibre of the large-diameter fiber (B) that diameter is 30～50 μ m, small diameter fibers (A) and large-diameter fiber (B) have resin with high melting point portion respectively, and at least one side is also contained low-melting-point resin portion in small diameter fibers (A) and the large-diameter fiber (B).
2. composite fibre nonwoven cloth as claimed in claim 1 is characterized in that: above-mentioned small diameter fibers (A) contains low-melting-point resin portion and resin with high melting point portion.
3. composite fibre nonwoven cloth as claimed in claim 1 is characterized in that: above-mentioned small diameter fibers (A) and large-diameter fiber (B) all contain low-melting-point resin portion and resin with high melting point portion.
4. as together described arbitrarily composite fibre nonwoven cloth in the claim 1～3, it is characterized in that: the tensile strength of vertical and horizontal is that 8kg/5cm is above, horizontal rigidity is 5kg/cm
2More than and be that the pressure loss among the 1m/sec is below the 5mmAq at wind speed.
5. composite fibre nonwoven cloth as claimed in claim 3 is characterized in that: the tensile strength of vertical and horizontal is that 10kg/5cm is above, horizontal rigidity is 6kg/cm
2More than, and be that the pressure loss among the 1m/sec is below the 3mmAq at wind speed.
6. as any described composite fibre nonwoven cloth in the claim 1～5, it is characterized in that: have at least a side to contain in resin with high melting point portion and the large-diameter fiber (B) in above-mentioned small diameter fibers (A) and the large-diameter fiber (B) and have at least a side to contain resin with high melting point portion and low-melting-point resin portion, it is that resin with high melting point more than 150 ℃ constitutes by fusing point that fiber has core; Skin zone is the core skin structure that 90～130 ℃ low-melting-point resin constitutes by fusing point.
7. composite fibre nonwoven cloth as claimed in claim 6 is characterized in that: the basal area ratio of the core/skin zone in the above-mentioned core skin structure is 20/80～80/20.
8. as any described composite fibre nonwoven cloth in the claim 1～5, it is characterized in that: have at least a side to have in above-mentioned small diameter fibers (A) and the large-diameter fiber (B) and be the resin with high melting point portion that constitutes of the resin with high melting point more than 150 ℃ and be the parallel type structure of the low-melting-point resin portion that constitutes of 90～130 ℃ of low-melting-point resins by fusing point by fusing point.
9. as any described composite fibre nonwoven cloth in the claim 1～8, it is characterized in that: the weight of per unit area is 50～150g/m
2, thickness is 0.5～1.5mm.
10. filter gasket material, it is characterized in that: it is to be made of any described institute composite fibre nonwoven cloth in the aforesaid right requirement 1～9.
11. filter gasket material as claimed in claim 10 is characterized in that: it is processed into by above-mentioned composite fibre nonwoven cloth rivel.
12. a filtering material is characterized in that: it is to be used by one deck at least to state the laminated body that any described composite fibre nonwoven cloth constitutes in the claim 1～9 and constitute.
13. filtering material as claimed in claim 12, it is characterized in that: it is to have the aided filter layer that is made of above-mentioned composite fibre nonwoven cloth and main filter course, and above-mentioned main filter course is made of stacked permanently-polarised ground dielectric nonwoven fabric on the above-mentioned composite fibre nonwoven cloth.
14. filtering material as claimed in claim 13 is characterized in that: it processes through rivel.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20685994 | 1994-08-31 | ||
| JP206859/94 | 1994-08-31 | ||
| JP7184366A JPH08120552A (en) | 1994-08-31 | 1995-07-20 | Conjugated fiber nonwoven fabric |
| JP184366/95 | 1995-07-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1133365A true CN1133365A (en) | 1996-10-16 |
Family
ID=26502461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95117161A Pending CN1133365A (en) | 1994-08-31 | 1995-08-31 | Composite fibre nonwoven cloth |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH08120552A (en) |
| KR (1) | KR960007866A (en) |
| CN (1) | CN1133365A (en) |
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|---|---|---|---|---|
| WO2012048545A1 (en) * | 2010-10-14 | 2012-04-19 | Ng Ying Yuk | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| CN102888712A (en) * | 2012-10-18 | 2013-01-23 | 温州大洲无纺布有限公司 | Spunlaced composite fiber non-woven fabric and preparation method thereof |
| WO2013091184A1 (en) * | 2011-12-21 | 2013-06-27 | Ng Ying Yuk | Needle-punched non-woven fabric, manufacturing method thereof and filter and sound absorbing material formed thereby |
| CN103866485A (en) * | 2012-12-11 | 2014-06-18 | 东丽纤维研究所（中国）有限公司 | Heat bonding non-woven fabric and production method and application thereof |
| CN106087249A (en) * | 2016-08-24 | 2016-11-09 | 长兴恒月无纺布有限公司 | A kind of production technology of the sub-light non-woven fabrics of mask |
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| JP3972419B2 (en) * | 1997-06-30 | 2007-09-05 | チッソ株式会社 | Nonwoven fabric and filter using the same |
| WO2002070805A1 (en) * | 2001-03-06 | 2002-09-12 | Mitsubishi Burlington Co.,Ltd. | Polyester nonwoven fabric, nonwoven fabric product thereof and various products using the nonwoven fabrics reinforcing material |
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-
1995
- 1995-07-20 JP JP7184366A patent/JPH08120552A/en active Pending
- 1995-08-24 KR KR1019950026306A patent/KR960007866A/en not_active Application Discontinuation
- 1995-08-31 CN CN95117161A patent/CN1133365A/en active Pending
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| WO2012048545A1 (en) * | 2010-10-14 | 2012-04-19 | Ng Ying Yuk | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| CN102575396A (en) * | 2010-10-14 | 2012-07-11 | 吴莹旭 | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| CN102575396B (en) * | 2010-10-14 | 2015-05-13 | 崇鸣投资有限公司 | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| AU2011316366B2 (en) * | 2010-10-14 | 2015-11-12 | Fairtech Investment Limited | Nonwoven fabric, manufacturing method thereof and filters formed by it |
| WO2013091184A1 (en) * | 2011-12-21 | 2013-06-27 | Ng Ying Yuk | Needle-punched non-woven fabric, manufacturing method thereof and filter and sound absorbing material formed thereby |
| CN104204324A (en) * | 2011-12-21 | 2014-12-10 | 崇鸣投资有限公司 | Needle-punched non-woven fabric, manufacturing method thereof and filter and sound absorbing material formed thereby |
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| CN103866485A (en) * | 2012-12-11 | 2014-06-18 | 东丽纤维研究所（中国）有限公司 | Heat bonding non-woven fabric and production method and application thereof |
| CN106087249A (en) * | 2016-08-24 | 2016-11-09 | 长兴恒月无纺布有限公司 | A kind of production technology of the sub-light non-woven fabrics of mask |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR960007866A (en) | 1996-03-22 |
| JPH08120552A (en) | 1996-05-14 |
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