CN1057138C - Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained - Google Patents
Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained Download PDFInfo
- Publication number
- CN1057138C CN1057138C CN94114917A CN94114917A CN1057138C CN 1057138 C CN1057138 C CN 1057138C CN 94114917 A CN94114917 A CN 94114917A CN 94114917 A CN94114917 A CN 94114917A CN 1057138 C CN1057138 C CN 1057138C
- Authority
- CN
- China
- Prior art keywords
- production method
- long filament
- filament
- fluid jet
- cloth sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Nonwoven Fabrics (AREA)
Abstract
The present invention relates to a production method of non-woven cloth composed of continuous crosslinking filaments and a cloth sheet manufactured with the method. The production method is characterized in that a non-woven material sheet is produced by frizzy double-composition filaments, and then, the non-woven material sheet is treated by high-pressure fluid jet stream. A mechanical function of the high-pressure liquid jet stream makes the material sheet composed of the frizzy filaments have effective wrapping and crosslinking.
Description
The invention belongs to the long filament that obtained by melt-spun polymer and produce the field of non-weaving cloth sheet or fiber web (WEBS), says especially, the production method that the present invention relates to a kind of continuous interconnected filaments non-weaving cloth reaches the cloth that makes thus.
In the interconnection technique of known long filament, there is a kind of special method of attachment, promptly adopt the method for fluid jet, as using air, steam, the various aqueous solution or or even high-pressure water jet.
Existing method of attachment is: use fluid jet, particularly high-pressure water jet is handled non-woven material, and these materials are to obtain with wet method or dry method (fibers of machinery or air-flow combing 20 to 80 millimeters long) technology.
Wet technique is employed to be that length seldom surpasses 20 millimeters short flat fiber.
And dry technique is to be used for manufacture order (single piece) organdy mostly, and use is normally curled, length reaches as high as 80 millimeters fiber.
These two kinds methods of producing the non-weaving cloth sheet are used the mixture of synthetic fiber usually, if necessary, can add artificial or natural fiber.These artificial or natural fibers are cellulose family normally, and their existence makes it possible to carry out the connection of fiber with high-pressure water jet better and produce, because they have good sensitiveness to high-pressure water jet.
In addition, the high fluidity of the staple fibre under jet action along the slip of all or part of fiber on the direction of the power that vertically is applied to the cloth plate plane, and makes fibre structure reset.
But, with fluid jet these processing methods to nonwoven material, when described non-woven material be the straight filament yarn of synthetic polymer form the time, very difficulty operates.Because the continuity of these fiber itselfs has been controlled its flowability, make that its entanglement is very poor, and need be under very high jet pressure, promptly greater than 200 * 10
3Under the pressure of Pa, could produce moderate entanglement effect, that is to say, the non-weaving cloth sheet that obtains is compared with traditional filament nonwoven cloth sheet, does not have improved characteristic or more advantage.
Purpose of the present invention is exactly in order to overcome these weak points, proposes a kind of production method of continuous filament yarn non-weaving cloth and the cloth that makes thus.
In order to realize this purpose, the present invention proposes the production method of a kind of continuous interconnected filaments (continuousinterconnected filaments) non-weaving cloth sheet, it is characterized in that: contain two kinds of long filament components and be that the bicomponent filament of arranging side by side makes a non-woven material slice with what curl, described bicomponent filament is made up of two kinds of different polymer, it is with a kind of special combining form, its a kind of component is from by polyamide 66, selected a kind of polyamide in one group of polyamide 6 and polyamide 11 compositions, its another kind of component is from by polyethylene terephthalate, selected a kind of polyester in one group that polybutyleneterephthalate and copolyester thereof are formed, handle described non-woven material slice with the high-pressure fluid jet then, the mechanism of described high-pressure fluid jet makes the described material piece of being made up of the long filament that curls take place effectively to tangle and entwine.
The present invention further provides the non-woven cloth sheet that obtains by above-mentioned production method.
From following preferred but be not the description of determinate embodiment to the present invention, and in conjunction with the accompanying drawings, it is more clear that the present invention will become.In the accompanying drawing:
Fig. 1 has illustrated the flat fiber distortion situation under the fluid jet effect in accordance with known methods with way of illustration; With
Fig. 2 has illustrated that with way of illustration crimped fibre is according to the distortion situation of method of the present invention under the fluid jet effect.
According to the present invention, described production method is: at first make a non-woven material slice with curling bicomponent filament, then process described non-woven material slice with the high-pressure fluid jet, the mechanism of described high-pressure fluid jet so that the described material piece that is formed by curling long filament occur effectively to tangle and entwine.
As illustrated in fig. 1 and 2, the long filament unit (Fig. 2) that is comprised of crimp filament has maximum distortion, and is far longer than the distortion by straight long filament, flat flat or straight long filament long filament unit (Fig. 1) that form, that have identical end distance.
In addition, the curling long filament of this kind is moved apart from or be out of shape needed dynamics to reach the needed dynamics of similar result than straight long filament much smaller.
Further, fluid jet is better than the effect of straight long filament far away to the effect of curling unit.
The result is, in the non-woven material slice, the entanglement or the intensity of entwining of continuous bi-component crimp filament, and quality of connection between described crimp filament and fecundity, under the identical situation of the energy that in cross-linking process, is consumed, in the non-woven material slice that is far superior to obtain by straight filament yarn or length gauze, the entanglement or the intensity of entwining of straight long filament, and the quality and the fecundity that between described straight long filament, connect.
According to first feature of the present invention, the described non-woven material slice of being made up of bi-component and crimp filament has double-decker, and it comprises two long filament component unit being made up of two kinds of different polymer.
The production of being made up of crimp filament, have double-deck non-woven material slice can be undertaken by the described method of french patent application No.8308770 especially, this method is, because long filament because of its symmetry characteristic, and produces spontaneous, strong and is stable curling in air cooling or its drawing process.
Contain two kinds of long filament components and be that the bicomponent filament of arranging side by side preferably is made up of two kinds of different polymer, it is with a kind of special composition forms, its a kind of component is selected a kind of polyamide from be made up of polyamide 66, polyamide 6 and polyamide 11 a group, and its another kind of component is selected a kind of polyester from be made up of polyethylene terephthalate, polybutyleneterephthalate and copolyester thereof a group.
But, polyester-polypropylene conjugate, polyamide-polypropylene conjugate, the conjugate of two kinds of dissimilar polyamide, or the conjugate of two kinds of dissimilar polyester, also be very suitable for obtaining having product double-deck and that can cause spontaneous formation to be curled as poly-terephthalate of ethene and polybutyleneterephthalate.
The ratio of forming two kinds of polymer of double-deck long filament can change in 95/5 to 5/95 scope.Quality and intensity that scale effect between two kinds of components is curled.This ratio between two kinds of components of regulating is one of a kind of method of the crimpness of control long filament.
These long filaments can obtain with various known spinning/extrusions, and the long filament that obtains can have except that circular cross-section, can also have various other cross sectional shapes, as trilobal, quadrangle or or even biconvex or other cross sectional shape.
For difform long filament, the most basic is, at every turn the long filament to bi-component cool off and the process that stretches in, utilize symmetry and the variability (differentiation) of two kinds of unit components on physical form simultaneously curling so that it takes place.
According to contingent situation, latter event promptly makes a variation, can be by auxiliary chemical treatment, and those described in the patent as previously discussed, or physical treatment and obtain increasing, these processing can cause the contraction of morphing of every kind of polymer.
According to a preferred embodiment of the present invention, when unit long filament component is mutual exclusive polymer, described method is preferably: the long filament of nonwoven cloth sheet is handled with fluid jet, the intensity of the mechanism that this fluid jet applied makes described long filament be dissociated into its units corresponding long filament component, and these unit long filament components are entwined and tangled under the effect of described fluid jet subsequently.
For example, under situation by the double-deck long filament of component polyethylene terephthalate and component polyhexamethylene hexamethylene adipamide, under the effect of high-pressure water jet, can realize the separation fully of described long filament or dissociate, and can obtain the long filament that separates of two 1 dtexs thus by the bicomponent filament of 2 dtexs.
This reduction of the unit sizes of long filament makes that also under the mechanism of water jet, fibrous reticular structure can react better, thereby has improved the entanglement effect.
Preferably, the unit sizes of employed bicomponent filament is less than 4 dtexs, and described long filament has 3 to 30 and curls in one centimetre length range, preferably have 8 to 20 and curl in one centimetre length range, and owing to curl, its pack coefficient is 50% to 400%.
In this specification, term " curls (curl) " and is meant formed ripple in the space of long filament or line, and can be defined quantitatively with the frequency that occurs of curling, represent with the quantity of curling that is occurred in the long filament of unit length or the line that promptly the crimpness of representing with percentage is meant the unconvoluted length of long filament or line and the ratio of the difference of the length of curling and unconvoluted length.
In addition, by bi-component and be that the weight of the long filament that the curls non-woven material slice unit are of producing is at 10-400g/m
2Between, preferably at 20-200g/m
2Between.
According to another feature of the present invention, the pressure of the fluid jet of being made up of water that is applied is in 50-300 * 10
5Between the Pa, preferably 100 * 10
5Pa to 250 * 10
5Between the Pa, described jet preferably is applied to two surfaces of non-woven material slice.
Preferably between 100 microns to 250 microns, described nozzle is arranged on the rod spout opening diameter of the nozzle of generation fluid jet, is provided with a row or two rows on described rod, and the spacing between the spout is preferably between 0.2 to 1.2 millimeter.
In the binder-treatment process, the knitmesh of support nonwoven material is made up of woven wire or synthetic material silk screen, and the outward appearance of the nonwoven material after their structure type and its tightness (order number) have determined to handle, and the size of nozzle and interval degree.
Thus, or obtain having predetermined pattern and large mesh cage work product, or obtain having the product of meshization or flannelization (flanneled) outward appearance and small mesh.
Under latter event, the surface of when handling, supporting nonwoven material with fluid jet by 80 to 100 purposes closely woven wire form.
Possible service speed depend on long filament size, they young modulus, they are to the weight of the sensitiveness of water, every square metre of nonwoven material, the per unit surface obtainable energy of institute and desirable access node degree.For extremely thin non-woven material slice, this service speed can be between 10 to 100 meters of per minutes, or more.
The present invention also relates to the non-woven material slice that obtains by above-described method, described non-woven material slice or form by having curling bicomponent filament, it has by the tight entanglement of described long filament and entwines and the connecting structure that forms; Or form by the long filament that curl to tangle and entwine, it is made up of two kinds of materials and is to obtain by dissociating of double-deck bicomponent filament.
Cloth sheet through so handling, on the one hand, character with the nonwoven material that obtains from long filament, very high as anti-fracture, anti tear and the anti-ability that pierces through, on the other hand, its pliability, drapability, opacity and so-called " nothing flies yarn (＂ lint-free property ＂) ", (this is when being used for medical treatment and operation promptly not have free fiber, it is very favorable for example being used for wound dressing, operating room, medical worker's Work Clothes or the like) very good, and cut its anti-scratch and the kitchen cleaning performance very good.These character even can handle by arrangement commonly used in the textile industry are improved.
Similarly, if desired, preferably carry out the back arrangement of fabric and handle, as dyeing, transfer method stamp dye, coating or fixation printing, fluffing or polishing handle or the like.
Except aforesaid application aspect medical, cloth sheet of the present invention can also be used in other textile field, as be used for decorating (as kilim carpet, wall paper, cloth, upholster, cover etc.) with outward appearance of conventional flannel or felt, as the supporter of coating (repair as footwear, artificial leather, bag, automobile inside etc.), or as synthetic SUEDE FABRIC leather, or with acting on the coating that flexible adhesives floods as the polyurethane that solidifies.
With following embodiment the present invention is further detailed.
According to the equipment described in the French Patent (FRP) FR7420254, the weight of producing unit are with method of the present invention under the following conditions is 110 gram/rice
2Non-woven cloth sheet:
-extruding obtains the long filament of 1.5 dtexs, each long filament is made up of two kinds of long filament components, and a kind of is polyester (ethylene glycol polyester terephthalate), and another kind is polyamide (a polyhexamethylene hexamethylene adipamide), two kinds of long filaments are arranged side by side, and the volume ratio of the two is 50/50;
-one in 125 centimetres of air-blast atomizers far away of spinnerets, be 3.2 * 10 in air pressure
5Stretch under the condition of Pa;
-adopt long filament to be dropped on the surface of an endless as so-called among the FR7420254 " travelling " method.The weight of the unit are that obtains thus is 110 gram/rice
2, form and demonstrate the spontaneous non-woven cloth sheet that curls that forms on falling receiving surface the time by bicomponent filament, its crimpness is 16 curls/centimetre, it is transferred on the device that a usefulness water jet bonds with the speed of 12 meters of per minutes subsequently, and it is that the metal of 100 orders, 25% opening transmits screen cloth that this device is provided with the order number.
This stamping device makes it possible to earlier a surface of nonwoven material be handled with having two two product line devices arranging the jet that is spaced apart 0.6 millimeter continuously, with its another surface of post processing.The diameter of nozzle opening is 100 microns, and is followed successively by 160-220-140-140 * 10 for the pressure of the water jet among each row who handles in first surperficial article one production line
5,, also so same for the second production line that is positioned at non-woven material slice.
Nonwoven material cloth sheet after draining air with 160 ℃ in a drying drum carries out drying.
Have been noted that; in stretched operation, when being put in heat and the moist environment, can make nonwoven material curling reinforcement in the middle usually with described; under the effect of water jet that particularly ought be under high pressure, all the more so when the long filament component also is not separated into single component fully.This makes described cloth sheet have wrinkling tendency by strengthening bonding, thereby makes described nonwoven material have " drapability " of improvement.
It is very good that resulting cloth sheet has very soft sense of touch and pliability.
Micro-detection shows that the yarn of polyamide and polyester is distinct, and yarn tangles very goodly.
The anti-bursting property of anti-the tearing property suddenly of the cripping load of the described cloth sheet that records according to AFNOR GO001 standard and energy of rupture, the described cloth sheet that records according to AFNOR GO7055 standard, the described cloth sheet that records according to AFNOR GO7221 standard all is very high; Its bending resistance records according to ISO/TC.94/SC 1139 F 3/70.
Distortion under the situation of load is very little having, and this can show fully and bonds very goodly.
The following different qualities of having expressed different non-woven cloth sheets, wherein, non-woven cloth sheet (A) is made up of the bicomponent filament (polyamide 6 .6/ polyethylene polyester terephthalate (50/50)) that curls of 1.5 dtexs, and its binding is to realize with high-pressure water jet according to method described above; Non-woven cloth sheet (B) is made up of the single component filaments yarn (polyethylene polyester terephthalate polyester) of the non-crimping of 1.5 dtexs.
By two column number purposes in the his-and-hers watches relatively, the outstanding advantage of non-woven cloth sheet of the present invention as can be seen.
| (A) | (B) | |
| Mass area ratio (g/m 2) | 108.5 | 110 |
| Cripping load SL (daN) | 43.7 | 32.3 |
| Cripping load ST (dAN) | 26.4 | 22.1 |
| Isotropism | 1.65 | 1.46 |
| Elongation SL (%) | 84.2 | 72.3 |
| Elongation ST (%) | 88.5 | 75.6 |
| Elongation/3daN-SL (%) | 4.4 | 8.2 |
| Elongation/5daN-SL (%) | 7.3 | 15.6 |
| Elongation/10daN SL (%) | 15.3 | 26.5 |
| Elongation/3daN ST (%) | 14.2 | 23.6 |
| Elongation/5daN ST (%) | 21.5 | 36.8 |
| Elongation/10daN ST (%) | 36.3 | 51.5 |
| Bursting energy SL (j) | 42.1 | 21.3 |
| Bursting energy ST (j) | 22.9 | 13.6 |
| Thickness (mm) | 0.66 | 1.17 |
| Thermal contraction ST (%) | 0.9 | 0.8 |
| Thermal contraction ST (%) | 0.8 | 0.7 |
| Deflection ST (mg/cm) | 846 | 1025 |
| Deflection ST (mg/cm) | 221 | 348 |
Certainly, the present invention is not restricted to shown in described embodiment and the accompanying drawing.Under the prerequisite that does not break away from protection scope of the present invention, can carry out various variations and modification to the present invention.
Claims (13)
1, a kind of production method of continuous interconnected filaments non-weaving cloth sheet, it is characterized in that: contain two kinds of long filament components and be that the bicomponent filament of arranging side by side makes a non-woven material slice with what curl, described bicomponent filament is made up of two kinds of different polymer, it is with a kind of special combining form, its a kind of component is from by polyamide 66, selected a kind of polyamide in one group of polyamide 6 and polyamide 11 compositions, its another kind of component is from by polyethylene terephthalate, selected a kind of polyester in one group that polybutyleneterephthalate and copolyester thereof are formed, handle described non-woven material slice with the high-pressure fluid jet then, the mechanism of described high-pressure fluid jet makes the described material piece of being made up of the long filament that curls take place effectively to tangle and entwine.
2, production method as claimed in claim 1, it is characterized in that: when unit long filament component is mutual exclusive polymer, this method is that the long filament of nonwoven cloth sheet is handled with fluid jet, the intensity of the mechanism that this fluid jet applied makes described long filament be dissociated into its units corresponding long filament component, and these unit long filament components are entwined and tangled under the effect of described fluid jet subsequently.
3, production method as claimed in claim 1, it is characterized in that: the standard size of described bicomponent filament is less than 4 dtexs, described long filament has 3 to 30 and curls in one centimetre length range, and owing to curl, its pack coefficient is 50% to 400%.
4, production method as claimed in claim 3 is characterized in that: described long filament has 8 to 20 and curls in one centimetre length range.
5, production method as claimed in claim 1 is characterized in that: the weight of described non-woven material slice unit are is at 10-400g/m
2Between.
6, production method as claimed in claim 5 is characterized in that: the weight of described non-woven material slice unit are is at 20-200g/m
2Between.
7, production method as claimed in claim 1 is characterized in that: the pressure of the fluid jet of being made up of water that is applied is in 50-300 * 10
5Between the Pa.
8, production method as claimed in claim 7 is characterized in that: the pressure of the fluid jet of being made up of water that is applied is 100 * 10
5Pa to 250 * 10
5Between the Pa, described jet is applied to two surfaces of non-woven material slice.
9, production method as claimed in claim 1, it is characterized in that: the spout opening diameter of the nozzle of described generation fluid jet is between 100 microns to 250 microns, described nozzle is arranged on the rod, be provided with a row or two rows on described rod, the spacing between the spout is between 0.2 to 1.2 millimeter.
10, production method as claimed in claim 1 is characterized in that: the surface of when handling, supporting nonwoven material with fluid jet by 80 to 100 purposes closely woven wire form.
11, production method as claimed in claim 1 is characterized in that: described non-woven cloth sheet in its drying process, is put it in the environment of heat and humidity, make the curling reinforcement of long filament, make cloth sheet contraction and fixed, and improved sense of touch.
12, the non-woven cloth sheet that obtains by claim 1 and each described production method of 3-11, it is characterized in that: described cloth sheet is made up of the bicomponent filament yarn that curls, and described cloth sheet is because of the entanglement closely of described long filament and entwine and have adhesive structure.
13, the non-woven cloth sheet that obtains by each described production method of claim 2-11, it is characterized in that: described cloth sheet is made up of together the bicomponent filament that curls of tangling and entwine, described filament yarn is made up of two kinds of different materials, and is to obtain by dissociating of double-deck bicomponent filament.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94114917A CN1057138C (en) | 1994-08-04 | 1994-08-04 | Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94114917A CN1057138C (en) | 1994-08-04 | 1994-08-04 | Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1116257A CN1116257A (en) | 1996-02-07 |
| CN1057138C true CN1057138C (en) | 2000-10-04 |
Family
ID=5037266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94114917A Expired - Fee Related CN1057138C (en) | 1994-08-04 | 1994-08-04 | Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1057138C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1074796C (en) * | 1999-03-11 | 2001-11-14 | 昌邑市无纺布厂 | Bundle superfine fibre polyurethane clothing shell material and its production method |
| US8461066B2 (en) * | 2007-08-02 | 2013-06-11 | Celanese Acetate Llc | Nonwoven from bulked filament tow |
| CN109943980B (en) * | 2017-12-20 | 2021-02-23 | 财团法人纺织产业综合研究所 | Non-woven fabric structure and manufacturing method thereof |
| CN114402101B (en) * | 2019-09-03 | 2024-04-05 | 贝里国际公司 | Hydroentangled nonwoven fabric comprising crimped continuous fibers |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090397A2 (en) * | 1982-03-31 | 1983-10-05 | Toray Industries, Inc. | Ultrafine fiber entangled sheet and method of producing the same |
| CN1055020A (en) * | 1990-03-16 | 1991-10-02 | 纳幕尔杜邦公司 | Make new stretchable batts |
| CN1068374A (en) * | 1991-07-05 | 1993-01-27 | 丹拿克朗有限公司 | Polyethylene bicomponent fibres |
-
1994
- 1994-08-04 CN CN94114917A patent/CN1057138C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0090397A2 (en) * | 1982-03-31 | 1983-10-05 | Toray Industries, Inc. | Ultrafine fiber entangled sheet and method of producing the same |
| CN1055020A (en) * | 1990-03-16 | 1991-10-02 | 纳幕尔杜邦公司 | Make new stretchable batts |
| CN1068374A (en) * | 1991-07-05 | 1993-01-27 | 丹拿克朗有限公司 | Polyethylene bicomponent fibres |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1116257A (en) | 1996-02-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4500384A (en) | Process for producing a non-woven fabric of hot-melt-adhered composite fibers | |
| US6133165A (en) | Bulky polytetrafluoroethylene filament and split yarn, method of producting thereof, method of producing cotton-like materials by using said filament or split yarn and filter cloth for dust collection | |
| EP0821086B1 (en) | Elastic polyester fibers and stretchable fiber articles containing same | |
| US5355565A (en) | Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained | |
| CN101605939B (en) | Fiber for wet-laying non-woven fabric | |
| CN1221698C (en) | Bonded-fibre fabric for producing clean-room protective clothing | |
| JPS63152445A (en) | Polyethylene flexible fiber thrust sheet | |
| US3960652A (en) | Process of forming wet laid tufted nonwoven fibrous web and tufted product | |
| US20080311343A1 (en) | Highly Resilient, Dimensionally Recoverable Nonwoven Material | |
| US6274237B1 (en) | Potentially crimpable composite fiber and a non-woven fabric using the same | |
| US4392903A (en) | Process for making a thermal-insulating nonwoven bulky product | |
| CN1057138C (en) | Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained | |
| US3394047A (en) | Process of forming water-laid felts containing hollow-viscose, textile, and synthetic fibers | |
| EP0413280A2 (en) | Polyamide-polyester composite fiber and process for producing same | |
| US3282038A (en) | Synthetic paper yarn | |
| JP6807757B2 (en) | Manufacturing method of dry non-woven fabric | |
| JPH02258007A (en) | Filter paper | |
| JPH05230751A (en) | High-toughness staple fiber nonwoven fabric excellent in flexibility and its production | |
| JP4026279B2 (en) | Split type composite fiber and fiber molded body using the same | |
| JP2586126B2 (en) | Long-fiber nonwoven fabric and method for producing the same | |
| EP0953660B1 (en) | Divisible hollow copolyester fibers and divided copolyester fibers, woven or knitted fabric, artificial leather and nonwoven fabric comprising same | |
| JP2512579B2 (en) | Bulk paper manufacturing method | |
| JP2555177B2 (en) | Bulky paper and manufacturing method thereof | |
| WO1989004389A1 (en) | False twist yarn resembling worsted yarn | |
| JPH02300398A (en) | Bulky paper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |