EP0694644B1 - Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained - Google Patents

Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained Download PDF

Info

Publication number
EP0694644B1
EP0694644B1 EP19940440050 EP94440050A EP0694644B1 EP 0694644 B1 EP0694644 B1 EP 0694644B1 EP 19940440050 EP19940440050 EP 19940440050 EP 94440050 A EP94440050 A EP 94440050A EP 0694644 B1 EP0694644 B1 EP 0694644B1
Authority
EP
European Patent Office
Prior art keywords
filaments
characterized
process according
manufacturing process
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 - Lifetime
Application number
EP19940440050
Other languages
German (de)
French (fr)
Other versions
EP0694644A1 (en
EP0694644B2 (en
Inventor
Jean Baravian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Freudenberg Politex SA
Original Assignee
Freudenberg Politex SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
Priority to FR9304919A priority Critical patent/FR2705698B1/en
Application filed by Freudenberg Politex SA filed Critical Freudenberg Politex SA
Priority to ZA9405637A priority patent/ZA9405637B/en
Priority to EP94440050A priority patent/EP0694644B2/en
Publication of EP0694644A1 publication Critical patent/EP0694644A1/en
Publication of EP0694644B1 publication Critical patent/EP0694644B1/en
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27236259&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0694644(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application granted granted Critical
Publication of EP0694644B2 publication Critical patent/EP0694644B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/10Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically
    • D04H3/11Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between yarns or filaments made mechanically by fluid jet
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/42Non-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
    • D04H1/4391Non-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 characterised by the shape of the fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-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
    • D04H1/44Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005Synthetic yarns or filaments
    • D04H3/009Condensation or reaction polymers
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/005Synthetic yarns or filaments
    • D04H3/009Condensation or reaction polymers
    • D04H3/011Polyesters
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/018Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the shape
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING 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
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments

Description

The present invention relates to the field of the production of nonwoven webs or strips, in continuous filaments obtained by spinning polymers with the molten state, and relates to a manufacturing process a nonwoven web made up of filaments continuous linked together, as well as a tablecloth as well obtained.

Among the current techniques of tying filaments, there is in particular the bonding by jets of fluid such as air jets, water vapor, solutions various acqueuses or water jets under high pressure.

These current binding methods consist of treat by jets of fluids, in particular by water jet under high pressure, the nonwovens obtained by techniques such as wet or dry (by mechanical or pneumatic carding of fibers of 20 up to 80 mm in length).

The wet process uses short fibers and flat, rarely exceeding 20 mm in length.

The dry process, on the other hand, uses generally crimped fibers, which greatly facilitates the production of unitary sails, including length can be up to 80 mm.

These two processes for forming layers of non-wovens most often use blends synthetic fibers, with possible addition of fibers artificial or natural. Natural fibers or artificial, often of cellulose origin, allow, by their presence, a better yield of bonding by pressurized water jets due to their sensitivity to this element.  

Furthermore, the high mobility of fibers cut, moved by the action of the jets, allows a rearrangement of the structure by sliding everything or part of the fibers in the direction of the lines of forces exerted perpendicular to the plane of the tablecloth.

However, these methods of treating nonwovens by jets of fluids, when said nonwovens are formed from continuous and rectilinear filaments of synthetic polymers, operate very with difficulty, due to the very continuity of the filaments which represents a brake on their mobility, makes their entanglement very difficult and requires very high jet pressures, greater than 200 × 10 5 Pa for a poor binding result, namely a nonwoven web having no improved characteristics or advantageous additional properties by compared to traditional continuous filament nonwoven webs.

The subject of the present invention is in particular to overcome these drawbacks.

It has, indeed, for object a process of manufacture of a nonwoven web consisting of continuous filaments linked together, characterized in that it consists in making a nonwoven web of from biconstituted filaments having a crimping, then subjecting said sheet to jets of fluid under high pressure, whose mechanical action entails a tangle and an intertwining of crimped filaments constituting said sheet.

The invention will be better understood thanks to the description below, which relates to a mode of preferred embodiment, given by way of example not limiting, and explained with reference to the drawings schematics, in which:

Figure 1 shows schematically the   deformation of a flat wire under the action of a jet of fluid according to conventional methods, and

Figure 2 shows schematically the deformation of a crimped wire under the action of a jet of fluid according to the process according to the invention.

According to the invention, the method of manufacturing consists, first of all, of making a nonwoven web from biconstituted filaments having a crimp, then subjecting said ply high pressure fluid jets, of which mechanical action leads to a tangle and a interlacing of crimped filaments constituting said tablecloth.

As shown in Figures 1 and 2 of attached drawings, maximum deformation of an element filament composed of a crimped filament (figure 2) is significantly larger than that of an element filament composed of a straight, flat or right (Figure 1), for elements with distances between their identical ends.

In addition, the force required for the displacement or deformation of such a crimped filament is less than that required for a filament straight, for a similar result.

In addition, the effect of the fluid jet on crimped filaments is significantly more effective than on straight filaments.

Therefore, the intensity of the tangle and the intertwining of continuous filaments curly biconstituents, and therefore quality and solidity of the connection between said crimped filaments of plies of nonwoven, are very much higher than those obtained for straight or rectilinear continuous filaments, this for an amount of energy expended, at course of tying, identical.

According to a first characteristic of   the invention, biconstituted and crimped filaments, constituting the nonwoven web, have a bimetal structure comprising two filamentary components elementary consisting of two polymers different.

The production of a nonwoven web composed of continuous curly filaments, with structure bimetallic strip, can in particular be carried out according to the method described in French filing n ° 83 08770, leading spontaneous, intense and stable crimping due to asymmetric behavior of the filaments during their air cooling or during stretching.

Biconstituent filaments comprising two filamentary components side by side, are advantageously composed of two different polymers, under in particular the form of a combination, on the one hand, of a polyamide chosen from the group formed by polyamide 66, polyamide 6 and polyamide 11 and, on the other part, of a polyester chosen from the group formed by polyethylene terephthalate, polybutylene terephthalate and the copolyester.

However, polyester-polypropylene pairs, polyamide-polypropylene, pairs of two different types of polyamides or polyester couples different, such as polyterephthalate etylene and polybutylene terephthalate are suitable also very good for obtaining bimetallic structures leading to spontaneous crimping.

The proportions of the two polymers, constituting the bimetal wire, can vary in proportions notable from 95/5 to 5/95. The relative proportions of both of the influencing constituents moreover on the quality and intensity of the crimp. Adjusting this proportion of one and the other constituent is one of the means of regulation filament crimp.  

These filaments can be obtained by various known spinning / extrusion methods and present, in addition to a circular section, sections various such as, for example, three-lobed sections, quadrangular, or even in the form of crescents or neighborhoods.

For these different forms of filaments, there it is essential each time to involve simultaneously asymmetry and differentiation of behavior physics of the two elementary components during filament cooling and drawing phases biconstituted, in order to obtain crimping.

The latter can, if necessary, be increased by additional chemical treatments, such as those described in the aforementioned deposit or physical treatments such as heat treatment causing differential withdrawals on each of polymers.

According to a preferred embodiment of the invention, the process can advantageously consist, in the case of filamentary components elementals made of incompatible polymers, to be submitted, via the fluid jets, the filaments of the nonwoven fleece with an action mechanical whose intensity is such that said filaments are dissociated into their filamentary components elementary, the latter then being intertwined and entangled under the effect of said jets of fluid.

In the case, for example, of a filament bimetal with one component in polyethylene terephthalate and a polyhexamethylene adipamide component, the complete separation or dissociation of said filament is effective under the action of high water jets pressure and thus achieves, for example, from a biconstituted filament of 2 dtex, two   1 dtex filaments separated.

This lowering of the title of the filaments also participates in obtaining a better reaction from the fibrous network to the mechanical action of water jets improving entanglement.

Advantageously, the titer of the filaments biconstituents used is less than 4 dtex, said filaments having a crimp frequency from 3 to 30 crimps per centimeter, preferably 8 to 20 crimps per centimeter and a crimp rate from 50 to 400%.

The term crimp means in this memory the ripple in space of a wire or a filament and can be defined numerically by crimp frequency values, designating the number crimps per unit length of wire or filament, and the crimp rate indicating, in percentage, the difference between the straightened length and the curled length of the wire or filament related to the straightened length of the latter or of the latter.

In addition, the nonwoven web produced by means of biconstituted and crimped filaments has a weight of 10 to 400 g / m 2 , preferably from 20 to 200 g / m 2 .

According to another characteristic of the invention, the fluid jets consist of water jets applied under a pressure of 50 to 300 x 10 5 Pa, preferably from 100 x 10 5 to 250 x 10 5 Pa, said jets being advantageously applied to both sides of the nonwoven web.

The nozzles for generating the jets of fluid may advantageously have a diameter ejection ports between 100 µm and 250 µm, said nozzles being grouped on bars, arranged on one or more rows, with spacing between ejection ports preferably between 0.2 and 1.2 mm.  

The fabrics supporting the nonwoven, during the binding treatment, consist of filaments metallic or synthetic material and their type of structure and tightening of the mesh conditions the appearance of the nonwoven after treatment, as well as nozzle dimensions and spacing.

We thus obtain either openwork products with a predetermined pattern and a large mesh dimension, either products with a mesh appearance or flannel and a tight mesh.

In the latter case, the fabrics supporting the nonwoven web when applying the jets of fluid consist of tight metal fabrics from 80 to 120 mesh.

The working speed possibilities depend on the titer of the filaments, their Young's modulus, their sensitivity to water, the weight / m 2 of the nonwoven, of course the energy available per unit area, and finally of the desired binding effect. They can be located between 10 and 100 m / min or even more for very light sheets.

The subject of the invention is also a tablecloth. nonwoven, obtained by the process described above, and composed either of continuous filaments biconstituents comprising a crimp, said ply having a linked structure resulting from entanglement and intense interlacing of said filaments, either of tangled curly continuous filaments and intertwined, consisting of two materials different and obtained by dissociation of filaments biconstitued continuous with bimetal structure.

The sheets thus treated have, of a hand, the properties of nonwoven filaments continuous, such as resistance levels to breaking, tearing and very puncturing flexibility, but also the flexibility,   draped, opacity and the so-called "lintfree" property, that is to say to have no fibers or fibrils free, which is a considerable advantage in medical and surgical applications such as dressings, surgical drapes, gowns medical or similar, and provides resistance friction and high household washing. These properties can be further improved by industry standard primers textile.

Likewise we can advantageously perform depending on the applications, finishing treatments textile such as dyeing, printing by transfer methods, pigment printing or fixed-washed, scraping or emery treatment or the like.

In addition to the medical applications cited, tablecloth applications thus obtained can also extend to other textile applications such as furniture (draperies, wall coverings, clothing in the traditional flannelized aspects or felted, upholstery for seats or bedding, blankets, etc ...), the coating supports (shoe, leather goods, luggage, automotive interior trim, etc ...) or even synthetic suede leathers or coatings obtained by impregnating flexible binders or for example coagulated polyurethanes.

The present invention will advantageously illustrated by the example described below.

A nonwoven web of 110 g / m 2 is produced by the method and by means of the device which is the subject of document FR 74 20254, under the following conditions:

  • extrusion of 1.5 dtex filaments, each consisting of two filamentary components, one made of polyester (polyethylene glyceride) and the other of polyamide (polyhexamethylene adipamide) in side-by-side position and in 50/50 proportion volume;
  • drawing in a pneumatic nozzle with an air pressure of 3.2 x 10 5 Pa, located 125 cm from the die;
  • depositing the filaments on an endless receiving apron using the so-called traveling method described in FR 74 20254.

The sheet of 110 g / m 2 thus obtained, consisting of bicomponent filaments and whose spontaneous crimp, revealed on receipt on the receiving apron, is 16 crimps / cm, is then transported at a speed of 12 m / minute up to to a water jet binding device fitted with a 100 mesh metallic transport fabric with an opening of 25%.

The tying device makes it possible to successively treat the nonwoven on one face, then the other, using two sets of four rows (bars) of jets spaced apart from each other by 0.6 mm. The nozzle orifices have a diameter of 100 μ and the pressures of the water jets of each of the rows are successively 160 - 220 - 140 - 140 x 10 5 Pa on the first assembly and on one side, the same for the second set located on the other side of the tablecloth.

The tablecloth, after spinning, is dried on a air-through drum at a temperature of 160 ° C.

It was noted that the submission of the tablecloth, during the drying operation, in a warm atmosphere and wet generally has an action accentuating the crimp filaments within the nonwoven, especially if these have been imperfectly separated into constituents unitary by the action of pressurized water jets. This tends to shrink the web by consolidating binding and imparting superior properties from "draped" to non-woven.  

The tablecloth obtained has a very soft touch and is very flexible.

On examination under the microscope, it can be seen that the strands of polyamide and polyester are completely separated and that entanglement is pushed to a stage very advanced.

The breaking load as well as the energy of rupture of the water table, measured according to the AFNOR standard GO7OO1, the initiated tear resistance, measured according to AFNOR GO7055 standard and burst strength, according to AFNOR GO7112 standard are at a level very high ; flexural rigidity is achieved according to ISO / TC.94 / SC 1139 F 3/70.

The deformation under load is also very limited, which perfectly demonstrates the very good link level.

The table below represents the different characteristics, on the one hand, of a tablecloth (A) of nonwoven consisting of continuous filaments and polyamide 6.6 / polyethylene bimetallic curly 1.5 dtex terephthalate (50/50) linked by water jets under pressure according to the process described above, and, on the other hand, a nonwoven web (B) made up of monolame filaments, continuous and not crimped, of 1.5 dtex, and polyethylene polyester compounds terephthalate.

The comparison of the two columns of values makes it possible to appreciate the significant advantages provided by the invention. (AT) (B) Area mass (g / m 2 ) 108.5 110 Breaking load - SL (daN) 43.7 32.3 Breaking load - ST (dAN) 26.4 22.1 Isotropy 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 Breaking energy - SL (j) 42.1 21.3 Breaking energy - ST (j) 22.9 13.6 Thickness (mm) 0.66 1.17 Thermal shrinkage - SL (%) 0.9 0.8 Thermal shrinkage - ST (%) 0.8 0.7 Flexion SL (mg / cm) 846 1025 ST bending (mg / cm) 221 348

Claims (12)

  1. Process for manufacturing a nonwoven sheet formed from continuous filaments bonded together, characterized in that it consists in producing a nonwoven sheet from continuous bicomponent filaments, the linear density of which is less than 4 dtex, these filaments comprising two elementary filamentary components made of two different polymers and exhibiting a spontaneous crimp with a crimp frequency of 3 to 30 crimps per centimetre and a percentage crimp of 50 to 400%, then in subjecting the said sheet to high-pressure fluid jets, the mechanical action of which causes entanglement and interlacement of the crimped filaments forming the said sheet.
  2. Manufacturing process according to Claim 1, characterized in that the crimped bicomponent filaments forming the nonwoven sheet have a bilayer structure.
  3. Manufacturing process according to either of Claims 1 and 2, characterized in that the bicomponent filaments, comprising two filamentary components side by side, are composed of two different polymers in the form of a combination, on the one hand, of a polyamide chosen from the group formed by nylon-6,6, nylon-6 and nylon-11 and, on the other hand, of a polyester chosen from the group formed by polyethylene terephthalate, polybutylene terephthalate and copolyester.
  4. Manufacturing process according to Claims 2 and 3, characterized in that it consists in subjecting, by means of the fluid jets, the filaments of the nonwoven sheet to a mechanical action whose intensity is such that the said filaments are dissociated into their elementary filamentary components, the latter then being interlaced and entangled due to the effect of the said fluid jets.
  5. Manufacturing process according to any one of Claims 1 to 4, characterized in that the filaments have a crimp frequency of 8 to 20 crimps per centimetre.
  6. Manufacturing process according to any one of Claims 1 to 5, characterized in that the nonwoven sheet has a weight of 10 to 400 g/m2, preferably of 20 to 200 g/m2.
  7. Manufacturing process according to any one of Claims 1 to 6, characterized in that the fluid jets consist of water jets applied with a pressure of 50 to 300 × 105 Pa, preferably of 100 × 105 to 250 × 105 Pa, the said jets being advantageously applied to both sides of the nonwoven sheet.
  8. Manufacturing process according to any one of Claims 1 to 7, characterized in that the nozzles for generating the fluid jets have an ejection orifice diameter of between 100 µm and 250 µm, the said nozzles being grouped together in linear arrays, lying in one or more rows, with a space preferably of between 0.2 and 1.2 mm between ejection orifices.
  9. Manufacturing process according to any one of Claims 1 to 8, characterized in that the grids supporting the nonwoven sheet during application of the fluid jets consist of 80 to 120 mesh tight metal grids.
  10. Manufacturing process according to any one of Claims 1 to 9, characterized in that it consists in subjecting the nonwoven sheet, while it is being dried, to a hot and wet environment making it possible to accentuate the crimping of the filaments and to bring about shrinkage and consolidation of the said sheet, as well as improved feel properties.
  11. Nonwoven sheet obtained by means of the manufacturing process according to any one of Claims 1 to 3 and 5 to 10, characterized in that it is composed of continuous bicomponent filaments having a spontaneous crimp, the said sheet having a bonded structure resulting from intense entanglement and interlacement of the said filaments.
  12. Nonwoven sheet obtained by means of the manufacturing process according to any one of Claims 4 to 10, characterized in that it is formed from entangled and interlaced crimped continuous filaments, consisting of two different materials and obtained by dissociation of continuous bicomponent filaments having a bilayer structure.
EP94440050A 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained Expired - Lifetime EP0694644B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9304919A FR2705698B1 (en) 1993-04-22 1993-04-22 Method of manufacturing a nonwoven web consisting of continuous filaments bonded together and the web thus obtained.
ZA9405637A ZA9405637B (en) 1994-07-29 1994-07-29 Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
EP94440050A EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
FR9304919A FR2705698B1 (en) 1993-04-22 1993-04-22 Method of manufacturing a nonwoven web consisting of continuous filaments bonded together and the web thus obtained.
US08/053,367 US5355565A (en) 1993-04-22 1993-04-28 Process for the production of a non-woven cloth constituted of continuous interconnected filaments and cloth thus obtained
AT94440050T AT186578T (en) 1993-04-22 1994-07-29 Manufacturing method for a fleece layer from tied filaments and balm made thereof
DK94440050T DK0694644T3 (en) 1993-04-22 1994-07-29 Process for making a nonwoven fabric consisting of continuous filaments interconnected
PT94440050T PT694644E (en) 1993-04-22 1994-07-29 Process for the manufacture of a non-tissue band constituted by continuous filaments linked between it and obtained band
DE1994621612 DE69421612T3 (en) 1993-04-22 1994-07-29 Manufacturing process for a nonwoven layer made of bound filaments and balm thus produced
ES94440050T ES2141812T3 (en) 1993-04-22 1994-07-29 Manufacturing procedure of a sheet of non-woven material, constituted by continuous filaments united between them, and sheet so obtained.
SI9430302T SI0694644T1 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained
DE1994440050 DE694644T1 (en) 1993-04-22 1994-07-29 Manufacturing process for a nonwoven layer made of bound filaments and balm thus produced
EP94440050A EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained
GR20000400294T GR3032596T3 (en) 1993-04-22 2000-02-09 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Publications (3)

Publication Number Publication Date
EP0694644A1 EP0694644A1 (en) 1996-01-31
EP0694644B1 true EP0694644B1 (en) 1999-11-10
EP0694644B2 EP0694644B2 (en) 2004-03-10

Family

ID=27236259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94440050A Expired - Lifetime EP0694644B2 (en) 1993-04-22 1994-07-29 Method of producing a non woven sheet comprising continuous filaments bonded together and sheet thus obtained

Country Status (10)

Country Link
US (1) US5355565A (en)
EP (1) EP0694644B2 (en)
AT (1) AT186578T (en)
DE (2) DE694644T1 (en)
DK (1) DK0694644T3 (en)
ES (1) ES2141812T3 (en)
FR (1) FR2705698B1 (en)
GR (1) GR3032596T3 (en)
PT (1) PT694644E (en)
SI (1) SI0694644T1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200669B1 (en) 1996-11-26 2001-03-13 Kimberly-Clark Worldwide, Inc. Entangled nonwoven fabrics and methods for forming the same

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5587225A (en) * 1995-04-27 1996-12-24 Kimberly-Clark Corporation Knit-like nonwoven composite fabric
US6352948B1 (en) 1995-06-07 2002-03-05 Kimberly-Clark Worldwide, Inc. Fine fiber composite web laminates
US5970583A (en) * 1997-06-17 1999-10-26 Firma Carl Freudenberg Nonwoven lap formed of very fine continuous filaments
JPH11217757A (en) * 1998-01-30 1999-08-10 Unitika Ltd Staple fiber nonwoven fabric and its production
US7091140B1 (en) 1999-04-07 2006-08-15 Polymer Group, Inc. Hydroentanglement of continuous polymer filaments
DE19934442C2 (en) * 1999-07-26 2001-09-20 Freudenberg Carl Fa Process for producing a nonwoven and nonwoven for producing cleanroom protective clothing
DE19962359B4 (en) * 1999-12-23 2004-07-08 Carl Freudenberg Kg Thermo nonwoven
DE19962355A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sanitary clothing
DE19962360B4 (en) * 1999-12-23 2005-06-30 Carl Freudenberg Kg Protective clothing
DE19962357A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sleepwear
DE19962356A1 (en) * 1999-12-23 2001-07-05 Freudenberg Carl Fa Sanitary linen
DE19962361A1 (en) * 1999-12-23 2001-07-12 Freudenberg Carl Fa Sportswear
DE10009281C1 (en) * 2000-02-28 2001-03-22 Freudenberg Carl Fa Sound-damping fleece especially suited for vehicle interior cladding, is made of fine melt-spun fibers, split to microfilaments following pre-solidification
DE10009248C2 (en) * 2000-02-28 2002-06-27 Freudenberg Carl Kg Medical dressings
DE60122501T2 (en) 2000-05-16 2007-02-01 Polymer Group, Inc. Method for producing a nonwoven fabric with fissile fibers
US6736916B2 (en) 2000-12-20 2004-05-18 Kimberly-Clark Worldwide, Inc. Hydraulically arranged nonwoven webs and method of making same
FR2835866B1 (en) 2002-02-12 2004-08-20 Meritor Light Vehicle Sys Ltd Motor vehicle opening device
US6715189B2 (en) * 2002-02-27 2004-04-06 Milliken & Company Method for producing a nonwoven fabric with enhanced characteristics
DE10219929A1 (en) * 2002-05-03 2003-12-04 Freudenberg Carl Kg Process for improving softness and / or dropping nonwovens
US6739023B2 (en) 2002-07-18 2004-05-25 Kimberly Clark Worldwide, Inc. Method of forming a nonwoven composite fabric and fabric produced thereof
US7022201B2 (en) 2002-12-23 2006-04-04 Kimberly-Clark Worldwide, Inc. Entangled fabric wipers for oil and grease absorbency
US6958103B2 (en) 2002-12-23 2005-10-25 Kimberly-Clark Worldwide, Inc. Entangled fabrics containing staple fibers
US7645353B2 (en) 2003-12-23 2010-01-12 Kimberly-Clark Worldwide, Inc. Ultrasonically laminated multi-ply fabrics
US7194788B2 (en) 2003-12-23 2007-03-27 Kimberly-Clark Worldwide, Inc. Soft and bulky composite fabrics
GB2415011B (en) * 2004-06-11 2009-01-14 Louver Lite Ltd Blind fabric
ES2279679B1 (en) * 2005-05-09 2008-07-16 Antonio Bullon Herrera Improvements in the constitution of curtains, stores and similar elements.
US8021996B2 (en) 2008-12-23 2011-09-20 Kimberly-Clark Worldwide, Inc. Nonwoven web and filter media containing partially split multicomponent fibers

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL147200B (en) * 1964-08-04 1975-09-15 Du Pont A process for the manufacture of an apertured non-woven fabric and non-woven fabric manufactured according to this method.
US3485706A (en) 1968-01-18 1969-12-23 Du Pont Textile-like patterned nonwoven fabrics and their production
NL7003565A (en) * 1969-03-12 1970-09-15
FR2299438B1 (en) * 1974-06-10 1977-06-17 Rhone Poulenc Textile
US4188690A (en) * 1976-02-25 1980-02-19 Mitsubishi Rayon Company, Limited Nonwoven fabric and manufacturing method thereof
US4329763A (en) * 1979-01-04 1982-05-18 Monsanto Company Process for softening nonwoven fabrics
DE3381143D1 (en) * 1982-03-31 1990-03-01 Toray Industries Ultra fine kinded fibers fibers, and method for producing the same.
US4548628A (en) * 1982-04-26 1985-10-22 Asahi Kasei Kogyo Kabushiki Kaisha Filter medium and process for preparing same
JPS6152274B2 (en) * 1982-07-07 1986-11-12 Toray Industries
JPS6257733B2 (en) * 1982-12-31 1987-12-02 Uni Charm Corp
FR2546536B1 (en) * 1983-05-25 1985-08-16 Rhone Poulenc Fibres Process for the treatment of nonwoven tablecloths and product obtained
DE3483149D1 (en) * 1984-01-05 1990-10-11 Du Pont Unwoven fabrics.
US4939016A (en) * 1988-03-18 1990-07-03 Kimberly-Clark Corporation Hydraulically entangled nonwoven elastomeric web and method of forming the same
JPH0749619B2 (en) * 1990-04-12 1995-05-31 ユニチカ株式会社 Entangled nonwoven fabric and method for producing the same
JPH0434058A (en) * 1990-05-30 1992-02-05 Nippon Ester Co Ltd Production of nonwoven fabric of ultrafine short fiber
JPH0457950A (en) * 1990-06-25 1992-02-25 Nippon Ester Co Ltd Production of superfine staple fiber nonwoven fabric
JPH0465567A (en) * 1990-06-28 1992-03-02 Daiwabo Create Kk Nonwoven fabric and production thereof
US5382400A (en) 1992-08-21 1995-01-17 Kimberly-Clark Corporation Nonwoven multicomponent polymeric fabric and method for making same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200669B1 (en) 1996-11-26 2001-03-13 Kimberly-Clark Worldwide, Inc. Entangled nonwoven fabrics and methods for forming the same

Also Published As

Publication number Publication date
DE69421612D1 (en) 1999-12-16
PT694644E (en) 2000-04-28
GR3032596T3 (en) 2000-05-31
US5355565A (en) 1994-10-18
DE69421612T2 (en) 2001-05-03
AT186578T (en) 1999-11-15
DK0694644T3 (en) 2000-05-15
EP0694644B2 (en) 2004-03-10
SI0694644T1 (en) 2000-04-30
DE69421612T3 (en) 2004-11-04
ES2141812T3 (en) 2000-04-01
FR2705698A1 (en) 1994-12-02
EP0694644A1 (en) 1996-01-31
DE694644T1 (en) 1996-12-12
FR2705698B1 (en) 1995-06-30

Similar Documents

Publication Publication Date Title
US4239720A (en) Fiber structures of split multicomponent fibers and process therefor
FI97629B (en) Water winding process and product
US3322617A (en) Paper making apparatus to form paper with a simulated woven texture
EP1149195B1 (en) Splittable multicomponent elastomeric fibers
US7406755B2 (en) Hydroentanglement of continuous polymer filaments
ES2383688T3 (en) A nonwoven material of hydroentangled split fibers
US3595731A (en) Bonded non-woven fibrous materials
US5002815A (en) Bulky and reinforced non-woven fabric
EP1303660B1 (en) Hydroentangled, low basis weight nonwoven fabric and process for making same
US4103054A (en) Suede-like raised woven fabric and process for preparation thereof
EP0941379B1 (en) Entangled nonwoven fabrics and methods for forming the same
CA1079942A (en) Nonwoven fabric
US4107374A (en) Non-woven fabric usable as a substratum sheet for artificial leather
EP1458914B1 (en) Nonwoven fabrics having a durable three-dimensional image
US4251587A (en) Sheet material and method of producing the same
EP1282737B1 (en) Method of making nonwoven fabric comprising splittable fibers
KR970007692B1 (en) Apparatus and method for hydroenhancing fabric
EP0317646B1 (en) Lengthwise and crosswise stretchable cloth and process for its production
US6629340B1 (en) Acoustic underlayment for pre-finished laminate floor system
CA2155315C (en) Stitchbonded articles and method of making same
US6669799B2 (en) Durable and drapeable imaged nonwoven fabric
US3505155A (en) Nonwoven continuous filament product and method of preparation
EP0365943B1 (en) Stretchable nonwoven fabrics and method for producing same
RU2414552C2 (en) Moulding tape to manufacture non-woven materials separated into separate sheets
US4320167A (en) Nonwoven fabric and method of production thereof

Legal Events

Date Code Title Description
RAX Requested extension states of the european patent have changed

Free format text: SI PAYMENT 940803

AX Request for extension of the european patent to

Free format text: SI PAYMENT 940803

AK Designated contracting states:

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

17P Request for examination filed

Effective date: 19960503

GBC Gb: translation of claims filed (gb section 78(7)/1977)
TCAT At: translation of patent claims filed
TCNL Nl: translation of patent claims filed
DET De: translation of patent claims
RAP1 Transfer of rights of an ep published application

Owner name: FREUDENBERG POLITEX SA

17Q First examination report

Effective date: 19990331

AK Designated contracting states:

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

AX Request for extension of the european patent to

Free format text: SI PAYMENT 19940803

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991110

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19991110

REF Corresponds to:

Ref document number: 186578

Country of ref document: AT

Date of ref document: 19991115

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: HEPP, WENGER & RYFFEL AG

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19991117

REF Corresponds to:

Ref document number: 69421612

Country of ref document: DE

Date of ref document: 19991216

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: FRENCH

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2141812

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20000125

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

26 Opposition filed

Opponent name: KIMBERLY-CLARK WORLDWIDE, INC

Effective date: 20000809

NLR1 Nl: opposition has been filed with the epo

Opponent name: KIMBERLY-CLARK WORLDWIDE, INC

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

RAP2 Transfer of rights of an ep granted patent

Owner name: CARL FREUDENBERG KG

NLT2 Nl: modifications (of names), taken from the european patent patent bulletin

Owner name: CARL FREUDENBERG KG

PGFP Postgrant: annual fees paid to national office

Ref country code: GR

Payment date: 20030630

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: ES

Payment date: 20030704

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: PT

Payment date: 20030707

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: SE

Payment date: 20030716

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: DK

Payment date: 20030717

Year of fee payment: 10

Ref country code: LU

Payment date: 20030717

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: NL

Payment date: 20030718

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: IE

Payment date: 20030721

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: BE

Payment date: 20030724

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: AT

Payment date: 20030729

Year of fee payment: 10

PGFP Postgrant: annual fees paid to national office

Ref country code: CH

Payment date: 20030731

Year of fee payment: 10

AK Designated contracting states:

Kind code of ref document: B2

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

27A Maintained as amended

Effective date: 20040310

AX Request for extension of the european patent to

Extension state: SI

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: MAINTIEN DU BREVET DONT L'ETENDUE A ETE MODIFIEE

GBTA Gb: translation of amended ep patent filed (gb section 77(6)(b)/1977)
NLR2 Nl: decision of opposition

Effective date: 20040310

REG Reference to a national code

Ref country code: GB

Ref legal event code: 732E

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040610

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040610

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040621

PGFP Postgrant: annual fees paid to national office

Ref country code: GB

Payment date: 20040621

Year of fee payment: 11

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040630

REG Reference to a national code

Ref country code: SE

Ref legal event code: ECNC

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040729

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040729

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040731

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: SI

Ref legal event code: IF

BERE Be: lapsed

Owner name: S.A. *FREUDENBERG POLITEX

Effective date: 20040731

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: PT

Ref legal event code: MM4A

Free format text: LAPSE DUE TO NON-PAYMENT OF FEES

Effective date: 20050131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050729

REG Reference to a national code

Ref country code: SI

Ref legal event code: KO00

Effective date: 20050602

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20050729

BERE Be: lapsed

Owner name: S.A. *FREUDENBERG POLITEX

Effective date: 20040731

PGFP Postgrant: annual fees paid to national office

Ref country code: IT

Payment date: 20120728

Year of fee payment: 19

Ref country code: DE

Payment date: 20120809

Year of fee payment: 19

Ref country code: FR

Payment date: 20120808

Year of fee payment: 19

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69421612

Country of ref document: DE

Effective date: 20140201

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140201

PG25 Lapsed in a contracting state announced via postgrant inform. from nat. office to epo

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130729