WO1992006237A1 - Nontisse lie hydrauliquement et son procede de fabrication - Google Patents
Nontisse lie hydrauliquement et son procede de fabrication Download PDFInfo
- Publication number
- WO1992006237A1 WO1992006237A1 PCT/FR1991/000783 FR9100783W WO9206237A1 WO 1992006237 A1 WO1992006237 A1 WO 1992006237A1 FR 9100783 W FR9100783 W FR 9100783W WO 9206237 A1 WO9206237 A1 WO 9206237A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fibers
- nonwoven
- synthetic fibers
- water jets
- wood pulp
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229920002994 synthetic fiber Polymers 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 17
- 239000008240 homogeneous mixture Substances 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 56
- 239000012209 synthetic fiber Substances 0.000 claims description 27
- 239000000203 mixture Substances 0.000 claims description 12
- 238000002844 melting Methods 0.000 claims description 8
- 230000008018 melting Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000004927 fusion Effects 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 9
- 238000012360 testing method Methods 0.000 description 16
- 239000004744 fabric Substances 0.000 description 11
- 239000004698 Polyethylene Substances 0.000 description 10
- 230000002745 absorbent Effects 0.000 description 10
- 239000002250 absorbent Substances 0.000 description 10
- -1 polyethylene Polymers 0.000 description 10
- 238000010521 absorption reaction Methods 0.000 description 9
- 239000004745 nonwoven fabric Substances 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 229920000573 polyethylene Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 239000004816 latex Substances 0.000 description 5
- 229920000126 latex Polymers 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 229920001169 thermoplastic Polymers 0.000 description 5
- 239000004416 thermosoftening plastic Substances 0.000 description 5
- 239000004753 textile Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000003490 calendering Methods 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004049 embossing Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 229920013683 Celanese Polymers 0.000 description 1
- 241000876833 Emberizinae Species 0.000 description 1
- 102220632628 Immunoglobulin heavy variable 1-69_E22A_mutation Human genes 0.000 description 1
- 239000004166 Lanolin Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007970 homogeneous dispersion Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229940039717 lanolin Drugs 0.000 description 1
- 235000019388 lanolin Nutrition 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 102220215119 rs1060503548 Human genes 0.000 description 1
- 102200082881 rs33936254 Human genes 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/48—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation
- D04H1/49—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres in combination with at least one other method of consolidation entanglement by fluid jet in combination with another consolidation means
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5414—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres side-by-side
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- 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
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
- Y10T156/10—Methods of surface bonding and/or assembly therefor
- Y10T156/1002—Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
- Y10T156/1007—Running or continuous length work
- Y10T156/1008—Longitudinal bending
- Y10T156/1011—Overedge bending or overedge folding
Definitions
- the invention relates to an absorbent nonwoven product consisting mainly of short absorbent fibers, such as wood pulp fibers, and of longer synthetic fibers, the nonwoven being obtained by hydraulic bonding.
- a suspension of fibers in water is produced from which a sheet is formed.
- various qualities of paper are obtained, including cellulose wadding. This one finds many applications like household paper, for the care of the body, the wiping, etc.
- the cellulose wadding presents a weak mechanical resistance especially in the wet state which does not allow its application in the field of industrial or household wiping for example.
- the fibers are suspended in a gas flow, and they are deposited in a sheet on a permeable fabric.
- the low humidity does not allow the constitution of interfiber bonds, it is necessary to add a binder, generally a latex, to ensure the cohesion of the sheet.
- a binder generally a latex
- This product has substantially the same applications as the latter.
- the incorporation of a binder such as latex has drawbacks. For example, it increases the rigidity of the product and can react chemically with the fluids with which it is likely to come into contact.
- the manufacturing process consists in preparing a sheet from a homogeneous mixture of absorbent fibers and conjugated fibers; then subjecting it to a heat treatment in the mass, under low pressure, at a temperature sufficient to melt the polyethylene located on the surface of the synthetic fibers but not the polyester. In this way, after cooling, a low density nonwoven is obtained, the synthetic material component of which has retained its fibrous character.
- the fact that synthetic fibers retain their integrity is an important factor according to the patent for obtaining a product of high mass volume, with high absorption capacity.
- the envisaged applications consequently aim to use in particular as an absorbent body in hygiene articles, periodic towel for example.
- a consolidation post-treatment (calendering, embossing), or the association with another more resistant veil, seems necessary if one wishes to use this nonwoven in an application such as wiping where the mechanical stresses are great.
- Patent application EP 0326771 describes an absorbent and resistant nonwoven, composed of wood pulp fibers and textile fibers, free of any binder.
- This nonwoven is produced from one or more veils, previously formed by the wet method using the papermaking technique, and consisting of a homogeneous mixture of fibers containing 50 to 75% by weight of wood pulp and 25 to 50 by weight. of synthetic fibers of textile length.
- the veil (s) have also been subjected to a binding treatment by water jets, known per se, with sufficient energy to form a relatively dense, uniform nonwoven fabric, with good cohesion of the fibers between them.
- US patent 4442161 (KIRAY0GLU) which relates to a process for manufacturing a nonwoven bonded by water jets, consisting of synthetic fibers and wood pulp.
- the binding is carried out in particular from synthetic fibers in the form of a nonwoven veil of continuous filaments and wood pulp fibers in the form of a sheet. of paper.
- the treatment is carried out under conditions which make it possible to increase the liquid barrier properties of the nonwovens with a view in particular to an application as a linen for medical or surgical use.
- the invention relates to a process for manufacturing a nonwoven consisting of wood pulp fibers and synthetic fibers, using a binding treatment using water jets.
- the invention is characterized in that the binding treatment by water jets is carried out on a sheet, consisting of a homogeneous mixture of unbound fibers of wood pulp and synthetic fibers, formed by air.
- the formation of the web is ensured by any conventional method known to those skilled in the art. It consists in preparing metered quantities, on the one hand of synthetic fibers by opening and individualizing them, on the other hand of paper fibers obtained by dry defibration of paper pulp; then driving them by air, suspended in an air flow, in a cyclone type mixer for example. The homogeneous mixture resulting from the latter is then entrained, still in suspension in an air flow, towards a head for forming the sheet from which the fibers are deposited uniformly on a support fabric traveling at a determined continuous speed.
- the mixture produced will preferably comprise at least 70 by weight of wood pulp fibers, the remainder consisting of synthetic fibers.
- An advantageous mixture will be composed of 70 to 90% by weight of wood pulp fibers and 30 to 10 # of synthetic fibers. If a too small quantity of synthetic fibers is introduced into the mass of wood pulp fibers, it is difficult to obtain a homogeneous dispersion, and the grammage of the sheet lacks regularity. Furthermore, the subsequent binding is not carried out satisfactorily.
- Synthetic fibers can be of various natures; they will preferably have a length less than 20mm and a titer between 1.2 and 3.3 dtex.
- the binding treatment by water jets is also known per se to those skilled in the art.
- An example of a process is described in patents US 3 85706 (EVANS) or US 3560326 (BUNTING). It consists in passing through fine jets of high energy liquid through the fibrous sheet to be treated which is arranged on a support, in horizontal displacement, consisting of a perforated plate or else of a suitably chosen woven fabric. The intertwining of the fibers produced by the action of the water jets, leads to consolidating the sheet and gives it a textile appearance.
- the process allows the production of a nonwoven having a grammage between 20 and 200 g / m2, preferably it will be 40 to 100 g / m2.
- the upper limit will depend on the ability of the water jets to cross the sheet and interleave the fibers.
- the tear resistance is further improved by choosing thermoplastic synthetic fibers, and by subjecting the nonwoven, originating from the hydraulic bonding station, to a thermal bonding treatment by which the thermoplastic fibers are melted, at least partially, and ensure, after cooling, the formation of bonding zones between the fibers.
- these fibers are two-component fibers of which the one with the lowest melting point is at the surface. The heating temperature is determined so as to be sufficient to melt that of the two components which is at a lower melting point but not the other. These fibers thus allow a lower thermobonding temperature and the fibrous structure is preserved.
- the method therefore makes it possible to obtain a product having a textile appearance, absorbent, resistant to tearing, and the surface of which does not tend to fluff. It can be used as a disposable or short-term product, as a household, industrial wiping cloth or in catering. By its absence of any chemical binder, it can serve as a support for impregnating liquids: toilet milk, lanolin, wax, etc., and be used as an impregnated wipe. It can also be used in the medical, surgical, or hygienic field, if necessary, it is possible to subject the nonwoven to a chemical or mechanical softening post-treatment.
- FIG. 1 represents an installation allowing the implementation of the method of the invention.
- Figures 2 and 3 are graphs illustrating the tensile strength of nonwovens obtained according to the method of the invention.
- FIG. 4 is a graph illustrating a comparative test with a dry bonded nonwoven by latex and a thermally bonded nonwoven.
- the installation shown in Figure 1 comprises a receiving station for synthetic fibers (2) with a loader to feed a card (4) necessary when the fibers must be opened.
- the card itself feeds a mixer (5) which can be of the cyclone type.
- the mixer is also supplied with wood pulp fibers from a station (3) for dry defibering of paper pulp which is delivered in the form of sheets in a roll.
- the fibers, intimately mixed in the cyclone, are suspended in an air flow which carries them towards a head for forming the sheet (6).
- This consists of two rotary cylinders (61,62), parallel, perforated wall, and arranged transversely relative to an endless receiving fabric (8), which is itself permeable to air.
- a rod (63) for stirring the fibers provided with fins rubbing against their internal wall when they are rotating.
- the fluidized fibrous material is introduced inside the cylinders (6l, 62) by one end, and is sucked through their perforated wall by a depression generated by a vacuum box (10) disposed under the receiving fabric (8 ) opposite the training head (6).
- the stirring rods ensure the progression of the mass of fibers axially inside $ cylinders, and help in the division of the aggregates possibly formed as well as in the passage of the fibers to the through walls.
- Sheets (65,66), arranged on either side of the cylinders, channel the gas flow towards the fabric (8). The fibers are thus received on the movable fabric in a continuous sheet which is entrained towards the binding station by water jets (20).
- This station comprises an endless cloth (21) stretched horizontally between rollers (22), at least one of which is driven by suitable means.
- the mesh of the canvas made of metal or plastic threads, is chosen in particular according to the texture, open or not, desired for the nonwoven; a perforated continuous sheet is also suitable.
- the canvas conveys the sheet through a set of ramps of water jets oriented transversely to its direction of movement. The number of ramps depends on the chosen stage of pressures. In the example produced on equipment supplied by the Perfojet Company, there are four.
- the water jets are produced from tubular distributors (24,26,28,30), arranged across the top of the fabric.
- Each distributor feeds a ramp of 40 to 60 injectors consisting of a plate pierced with calibrated orifices.
- the distributors are supplied with pressurized water and deliver high energy water jets on the fibrous web. After having dissipated its energy through the tablecloth, the water is recovered by suction boxes (25,27,29,31) arranged under the fabric opposite each ramp.
- the sheet after having been tied, is wrung by passage over vacuum slots and is then drawn to a drying device (40).
- the one shown in the figure is a through-blowing oven, the temperature of the heating gas of which can be adjusted so as to be able to ensure, in addition to drying, if necessary, the melting of the thermoplastic fibers contained in the sheet.
- Nonwovens were produced according to the process of the invention with mixtures at different levels of synthetic fibers (Table I). TABLE I
- Support fabric Metal grid (the texture and diameter of the metal wires ensure better entanglement of the web)
- Orifice diameter 100 - 140 ⁇ m
- the heating conditions in the oven were chosen so as to allow the drying of the nonwoven and the melting of the polyethylene of the synthetic fibers but not that of the polypropylene. In this way, the latter have retained their integrity, while ensuring the bonding of the fibers which are in contact with them.
- ABSORPTION (EDANA test 10.1-72) capacity (g / g) 7, -i 7.2 time (s) 1.5 2.4
- the measurements were made according to EDANA standards.
- the test for measuring the breaking strength 20.2-89 consists in subjecting the nonwoven to a tensile force at constant speed (100 mm / min) and in measuring the maximum load before breaking. The elongation corresponds to the extension of the sample measured at this point.
- the absorption capacity measurement test 10.1-72 consists in measuring, on the one hand, the time necessary for a nonwoven to be completely impregnated with a liquid, and on the other hand, the quantity of liquid absorbed during a determined time reduced to the weight of the nonwoven.
- polyethylene / polyester fibers such as those sold under the brand name CELANESE reference K 56 (uncrimped, 10 mm, 2.2 dtex) or else under the S0LSTAR brand (uncrimped, 10 mm, 2.2 dtex) or Polyester / polyester fibers as sold under the brand DUPONT reference 271P (uncrimped, 12 mm, 2.2 dtex) or under the brand UNITIKA reference Melty ( crimped, 10-15 mm, 1.5 / 2 dtex) or polyethylene / polypropylene fibers as sold under the brand DAIWAB0 reference NBF (uncrimped, 10 mm, 2 dtex).
- CELANESE reference K 56 uncrimped, 10 mm, 2.2 dtex
- S0LSTAR brand uncrimped, 10 mm, 2.2 dtex
- Polyester / polyester fibers as sold under the brand DUPONT reference 271P (uncrimped, 12 mm, 2.2 dtex) or under the brand UNITIKA reference Melty (
- fibers of the S / S type side / side
- polyethylene fiber sold under the brand STEEN reference Polysteen uncrimped, 12 mm, 2.8 dtex).
- the nonwoven from the binding by jets of water is also calendered at moderate temperature (tests E22A and E22B).
- Example 1 In the third case, the conditions of Example 1 were reproduced (tests E23A and E23B).
- the graphs in Figures 2 and 3 representing the breaking strength of a 5 cm wide (gf / 5cm) test tube, direction of travel
- the first E31 is a dry type product, the bond between the fibers was obtained by spraying with latex.
- the nonwoven contains 20% by weight of binder.
- the second E32 is a nonwoven, of the dry process type bonded by embossing, with a binder consisting of DANAKLON ESF thermoplastic fibers (see example 1) at a rate of 20%.
- the third E33 is a product produced under the conditions of Example 1 with mixture A.
- a comparative absorption-retention-resilience test was carried out between the nonwovens of example 1 obtained from mixtures D, E and F according to the process of the invention and a dry nonwoven bonded with latex (15%). as sold under the brand HOMECEL reference P050.
- the test consisted in particular in placing a sample on an absorption plate made of porous sintered glass through which it is moistened.
- the tray is connected by a flexible tube to a tank placed on a scale, and it can be moved along a vertical rail.
- the measurements are taken from the weight indications by the balance, the absorption capacity of the sample of which can be calculated in grams of liquid per gram of sample, after a determined time, and also the speed of initial absorption.
- the frit is moved along the rail so that the sample releases the liquid, due to the pressure negative created by the difference in level between the frit and the tank.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Materials For Medical Uses (AREA)
- Adornments (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/852,262 US5375306A (en) | 1990-10-08 | 1991-10-04 | Method of manufacturing homogeneous non-woven web |
CA002070773A CA2070773C (fr) | 1990-10-08 | 1991-10-04 | Nontisse absorbant lie hydrauliquement et son procede de fabrication |
EP91918188A EP0504368B1 (fr) | 1990-10-08 | 1991-10-04 | Nontisse lie hydrauliquement et son procede de fabrication |
DE69121694T DE69121694T2 (de) | 1990-10-08 | 1991-10-04 | Vliesstoff mit wasserstrahlen verfestigt und verfahren zur herstellung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9012348A FR2667622B1 (fr) | 1990-10-08 | 1990-10-08 | Montisse lie hydrauliquement et son procede de fabrication. |
FR90/12348 | 1990-10-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1992006237A1 true WO1992006237A1 (fr) | 1992-04-16 |
Family
ID=9400998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1991/000783 WO1992006237A1 (fr) | 1990-10-08 | 1991-10-04 | Nontisse lie hydrauliquement et son procede de fabrication |
Country Status (7)
Country | Link |
---|---|
US (1) | US5375306A (fr) |
EP (1) | EP0504368B1 (fr) |
AT (1) | ATE141964T1 (fr) |
CA (1) | CA2070773C (fr) |
DE (1) | DE69121694T2 (fr) |
FR (1) | FR2667622B1 (fr) |
WO (1) | WO1992006237A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2781818A1 (fr) * | 1998-07-31 | 2000-02-04 | Icbt Perfojet Sa | Procede pour la realisation d'un materiau non-tisse complexe et nouveau type de materiau ainsi obtenu |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4444206A1 (de) * | 1994-12-13 | 1996-06-20 | Fleissner Maschf Gmbh Co | Verfahren und Vorrichtung zum Veredeln von Krempelvliesen |
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- 1991-10-04 AT AT91918188T patent/ATE141964T1/de not_active IP Right Cessation
- 1991-10-04 CA CA002070773A patent/CA2070773C/fr not_active Expired - Lifetime
- 1991-10-04 US US07/852,262 patent/US5375306A/en not_active Expired - Lifetime
- 1991-10-04 EP EP91918188A patent/EP0504368B1/fr not_active Expired - Lifetime
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WO2000008245A1 (fr) * | 1998-07-31 | 2000-02-17 | Rieter Perfojet | Procede pour la realisation d'un materiau non-tisse complexe et nouveau type de materiau ainsi obtenu |
Also Published As
Publication number | Publication date |
---|---|
EP0504368A1 (fr) | 1992-09-23 |
CA2070773C (fr) | 2002-12-10 |
FR2667622A1 (fr) | 1992-04-10 |
CA2070773A1 (fr) | 1992-04-09 |
ATE141964T1 (de) | 1996-09-15 |
EP0504368B1 (fr) | 1996-08-28 |
US5375306A (en) | 1994-12-27 |
DE69121694T2 (de) | 1997-01-23 |
DE69121694D1 (de) | 1996-10-02 |
FR2667622B1 (fr) | 1994-10-07 |
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