EP3512993A1 - Verfahren zur herstellung eines nassgelegten vliesstoffes - Google Patents
Verfahren zur herstellung eines nassgelegten vliesstoffesInfo
- Publication number
- EP3512993A1 EP3512993A1 EP17768069.1A EP17768069A EP3512993A1 EP 3512993 A1 EP3512993 A1 EP 3512993A1 EP 17768069 A EP17768069 A EP 17768069A EP 3512993 A1 EP3512993 A1 EP 3512993A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- nonwoven web
- web
- fibrous web
- nonwoven
- 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.)
- Granted
Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 6
- 239000000835 fiber Substances 0.000 claims abstract description 74
- 239000011230 binding agent Substances 0.000 claims abstract description 46
- 239000000725 suspension Substances 0.000 claims abstract description 30
- 239000004744 fabric Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000000126 substance Substances 0.000 claims abstract description 19
- 238000007596 consolidation process Methods 0.000 claims abstract description 18
- 239000012784 inorganic fiber Substances 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 5
- 238000000151 deposition Methods 0.000 claims abstract 2
- 238000000034 method Methods 0.000 claims description 31
- 238000007711 solidification Methods 0.000 claims description 25
- 230000008023 solidification Effects 0.000 claims description 25
- 239000000463 material Substances 0.000 claims description 12
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 239000003063 flame retardant Substances 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000011707 mineral Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 claims 1
- 239000002657 fibrous material Substances 0.000 abstract 3
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005470 impregnation Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000914 Metallic fiber Polymers 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002557 mineral fiber Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
- 238000009736 wetting Methods 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
- D04H1/492—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 by fluid jet
-
- 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
- D04H1/485—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 in combination with weld-bonding
-
- 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
- D04H1/72—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 randomly arranged
- D04H1/732—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 randomly arranged by fluid current, e.g. air-lay
-
- 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
- D04H18/00—Needling machines
- D04H18/04—Needling machines with water jets
Definitions
- the invention relates to a method for producing a wet laid nonwoven fabric.
- Known processes for the production of nonwovens from natural fibers, e.g. Cellulosic fibers typically include formation of a fibrous web and subsequent dewatering, such as drying.
- Different methods of web formation are known from the prior art.
- the formation of the fibrous web is usually carried out by means of a wet-laying method on a skew-wire former with very low consistency of the pulp suspension, in particular with a solids content of 0.01 to 0.1% by weight, based on 100% by weight of the obtained nonwoven.
- the present invention relates to the aforementioned generic objects.
- the present invention has for its object to provide a method and an apparatus of the type mentioned, with which the aforementioned problems are eliminated in the simplest and most reliable manner.
- a method should be specified in which it is possible to dispense with a chemical binder addition or thermoplastic binder fibers in the pulp suspension as far as possible. And that is when artificially produced fibers are used for wet-laid nonwovens, in particular in high-temperature applications.
- a fibrous web is a scrim made of a pulp suspension of fibers of limited length, e.g. Endlostatin (filaments) or cut yarns to understand.
- the fibrous web initially has such a low strength that it itself is not sustainable.
- a nonwoven fabric or nonwoven web according to the invention is a structure of fibers, which in some way to a nonwoven (ie, to a fiber layer or to a Fibrous) and joined together, for example, in some way.
- a nonwoven fabric is a wet-laid, ie a hydraulically (also: hydrodynamically) formed nonwoven fabric.
- a nonwoven fabric is a consolidated, in particular finally solidified fibrous web.
- the fibrous web is an intermediate of the finally produced, fully consolidated nonwoven web.
- such a nonwoven fabric is solidified when it has such a high strength as a result of solidification that it is suitable for use as intended, for example for further processing into corresponding products such as hygiene articles.
- Hydraulic preconsolidation is understood to mean a solidification which does not yet convert the fibrous web into a nonwoven, since it does not achieve the required degree of solidification.
- a (final) solidification may also be a combination of a (also multi-stage) hydroentanglement - ie a hydraulic solidification process - and an additional saturation by means of a binder - that is a chemical solidification process.
- the nonwoven web can be dried.
- a subsequent mechanical consolidation for example by means of a needle machine, further increase the strength of the nonwoven web.
- Nonwoven fabrics within the meaning of the invention include fibrous structures made by interlacing yarns such as those used in weaving, knitting, knitting, lace making, braiding and the manufacture of tufted products. Also films and papers are not among the nonwovens.
- hydroentanglement or water jet needling is a hydraulic consolidation process for producing a strong bond between the fibers of a nonwoven. This entangles the fibers and so that the compaction and solidification of the web by swirling by z.
- fibrous suspension means a mixture of a liquid, such as water, and fibers.
- Forming mesh and / or strainer are typically endless, e.g. running on rollers, self-contained loops executed. They can be set up in such a way that the fibrous web can be water-jet-needled onto same. This means that the corresponding forming fabric and / or strainer is permeable to water so that the water jets can pass through it.
- a former such as an oblique wire former
- a forming fabric which is at least in sections - e.g. along a first stretch - at an angle to the horizontal.
- at least one headbox is arranged such that it applies the pulp suspension on the top of the forming fabric.
- Upper side means that the pulp suspension is applied to the top of the forming fabric.
- This is the side, on the one hand facing away from the rollers on which it rotates, and on the other hand faces the outlet of the headbox.
- at least one dewatering element can be arranged for dewatering the newly applied pulp suspension.
- the headbox may in turn be associated with the Schrägsiebformer.
- the Schrägsiebformer is arranged such that the first stretch increases in the direction of the deposited fibrous web viewed at an angle to a horizontal plane.
- the pulp suspension is substantially free of binders, it is meant that less than 10% by volume, preferably less than 5% by volume and more preferably no binders are contained therein.
- Binders are agents that stick together reach the fibers with each other, so that, for example, results in a solid bond between the fibers.
- the term binder covers chemical binders which are, for example, applied in liquid form to the fibrous web or added to the pulp suspension. They bond the fibers cohesively together by adhesion.
- decomposition temperature is meant the temperature at which the material of the fibers decomposes chemically or thermally.
- the decomposition temperature is e.g. characteristic of materials which do not melt, e.g. Thermosets.
- melting temperature is meant that temperature at which the material is e.g. the fiber passes from the solid state to the melt.
- modulus of elasticity is meant a material characteristic value from the material technology which describes the relationship between stress and strain in the deformation of a solid body with linear-elastic behavior.
- bending stiffness means the product of the modulus of elasticity with the corresponding area moment of inertia.
- a fiber is limp in the sense of the invention if it or its material has a modulus of elasticity which is below 10 GPa and rigid when the modulus of elasticity is at least 10 GPa.
- Fire-retardant is understood as meaning a material which, in the event of fire, retains its function over a certain period of time-ie does not melt or decompose-and, e.g. is flame retardant.
- binding fibers means fibers which have a lower modulus of elasticity than the fibers of the pulp suspension according to the invention and thus - with the same area moment of inertia as the fibers according to the invention are less sluggish.
- the admixture of the binding fibers to the flexurally rigid fibers according to the invention makes it possible that the latter, as a result of the entanglement of the fibers rigid fibers, which thus form a matrix, solidify with each other.
- the binding fibers indirectly allow a better consolidation of the rigid fibers with each other.
- the binder fibers may - but need not necessarily - as conventional fibers known from the thermal consolidation process, be melted, so be made of thermoplastics.
- these binding fibers can be fused together by thermal activation, such as thermofusion or thermal calendering.
- the material of these binder fibers may have a melting temperature below 300 ° C.
- the comparatively rigid fibers as well as the binder fibers should be made of a material having a decomposition or melting temperature of at least 300 ° C.
- the specification at least 300 ° C means above 300 ° C and therefore includes higher temperatures, eg above 350 ° C or above 500 ° C. In such applications, the advantages of the invention are particularly satisfactory. This is where the previous chemical and thermal consolidation processes fail.
- the chemical binder as well as the thermal binding fibers whereby the rigid fibers lose their bonding and the nonwoven dissolves.
- high-temperature applications it is meant that the nonwovens or final products in which the nonwovens are processed in such an ambient temperature of at least 300 ° C, preferably above 350 ° C and more preferably above operated or used by 500 ° C. In contrast to this, low-temperature applications are below 300 ° C.
- Such nonwovens may preferably be made of glass, metal, mineral, ceramic or carbon fibers.
- Such fibers may also be plastic fibers such as aramid fibers, but also mineral fibers such as basalt fibers.
- metallic fibers for example steel, stainless steel or titanium fibers are considered.
- the materials mentioned often have a modulus of elasticity of at least 10 GPa. They are then comparatively hard, brittle and rigid and can devour and entangle each other poorly. Therefore, it is particularly advantageous if in addition to the fibers binder fibers are used, which are less rigid.
- both the comparatively limp as well as the relatively beige fibers are preferably designed to be fire-retardant.
- the hydraulic consolidation of the nonwoven web takes place on the forming fabric-and preferably there in the end-then the overall length of the apparatus for producing a nonwoven web in the direction of the nonwoven web to be produced can be considerably reduced.
- Nonwovens so produced can be usefully used in low temperature applications below 300 ° C.
- nonwoven web solidified by means of water jets. This can also be done by means of appropriate structuring, eg by water jets. Then, not only the strength of such a nonwoven web can be improved but also given a predetermined structure.
- it can be dewatered mechanically, for example by means of a press, by means of a vacuum suction or thermally by means of a dryer (for example with through-flow drying technology, then through-flow dryer).
- the present invention further relates to the use of a device for producing a wet-laid nonwoven web, which is set up according to the invention.
- the present invention also relates to the product produced directly by means of the method according to the invention, that is to say the nonwoven itself.
- the present invention also relates to a use of the device according to the invention in accordance with the steps of the method according to the invention.
- the invention also relates to a method for converting a device for producing a wet laid nonwoven web, as set forth in the claims.
- Fig. 1 is a highly schematic representation of an inventive
- Fig. 2 is a highly schematic representation of an inventive
- Embodiment. 2 a device according to the invention for wet wetting of a nonwoven web in a side view is shown schematically and therefore not to scale.
- the device comprises a former, in the present case designed as Schrägsiebformer 1. This is an endless, here on rollers encircling forming fabric 2 assigned. The latter revolves relative to the fixed Schrägsiebformer. 1 Above the Formiersiebs 2 a headbox 1 .1 is arranged. The latter is associated with the Schrägsiebformer 1.
- the headbox 1 .1 is a pulp suspension can be fed, which can be applied via an outlet of the headbox 1 .1 on the Formiersieb 2, more precisely on its upper side.
- the pulp suspension usually has a water-fiber mixture.
- the forming fabric 2 is designed so that it lets the water through.
- a drainage box 1 .2 for discharging the water of the pulp suspension is arranged below the Formiersiebs 2, on the headbox 1 .1 side facing a drainage box 1 .2 for discharging the water of the pulp suspension is arranged.
- the drainage box 1 .2 is associated with the Schrägsiebformer 1.
- the pulp suspension passes through the outlet of the headbox 1 .1 on the relative to the headbox 1 .1 or on the drainage box 1 .2 on the roles passing forming fabric 2.
- the water flows through the forming fabric 2 in the drainage box. 1 .2 off.
- the fibers from the pulp suspension remain hanging on the forming fabric 2 and are transported with this. In this way, a corresponding fibrous web F is continuously stored or formed on the forming fabric 2.
- the Formiersieb 2 is - seen in the running direction or in the direction of the fibrous web F - in a first section, inclined against the horizontal upwards.
- the fibrous web F is formed.
- the first section is limited by the upper, in the direction of the Tragsiebs 2 immediately successive roles.
- at least two such upper rollers are provided.
- the forming wire 2 which rotates in the clockwise direction, thus increases in the first section from bottom left to top right.
- the fibrous web F is still passed after its formation on the Formiersieb 2 for their hydraulic consolidation under the solidification device 4.
- the latter is a plurality of water jet nozzles 4.1, which here above the Formiersiebs 2 and a drain 4.2 for water, which is below the Formiersiebs 2 assigned.
- the forming fabric 2 extends in the region in which the water-jet nozzles 4.1 and the outlet 4.2 are arranged horizontally or at least partially substantially parallel to the horizontal plane.
- the fibrous web F on the forming fabric 2 to the nonwoven web V is finally solidified.
- the former thus forms the Formierpartie the device.
- a binding section of the device adjoins the forming section directly.
- This comprises an application device 7, which is arranged above a transport screen 5 extending horizontally or at least partially substantially parallel to the horizontal plane.
- the finally hydraulically consolidated nonwoven web V can be impregnated with a chemical binder.
- the running direction of the nonwoven web V to be produced from left to right in the view of FIG. 2
- it is possible to connect directly to the binder section e.g. connect thermal dryer to dry the binder-provided nonwoven web V (not shown).
- FIG. 1 shows a development of the embodiment from FIG. There, substantially the same components are shown and correspondingly designated, as in Figure 2.
- a further solidification device 4 is arranged. This follows in the direction of the produced nonwoven web V seen directly on the Formiersieb 2.
- the further solidification device 4 also comprises a plurality of water jet nozzles 4.1, which here above a support screen 3 and a drain 4.2 for water, which is arranged below a support screen 3.
- the further solidification device 4 is thus in the direction of the to be produced nonwoven web seen the Formierpartie and the optional binder section (each directly) upstream.
- the (first) hydraulic hardening device 4 is assigned a preconsolidating device 6 in the running direction of the nonwoven web to be produced.
- this can be set up analogously to the hydraulic hardening device 4, but it can be operated at a lower pressure than the hardening device 4, which is for example only 5 to 25 bar.
- the respective solidification device 4, however, can be operated at a pressure of 15 to 400 bar.
- the fibrous web F is solidified from one side, in this case the upper side, that is, the side facing away from the forming fabric 2 or the support sieve 3.
- the further solidification device 4 in the direction of the nonwoven web V to be produced could directly be followed by a further, not shown, solidifying device.
- This could be preceded by the Binderpartie shown in the figures in the aforementioned direction. In the embodiment of Figure 2, this would be in the same direction directly downstream of the forming fabric 2 and the Formierpartie.
- Such a solidification device could comprise a cylinder which at least partially wraps around the fibrous web F for its (final) consolidation.
- a plurality of water jet nozzles is then directed onto the cylinder, in order to then apply water jets to the fibrous web, which is partially guided around the cylinder, from its underside.
- the pulp suspension may be substantially free of addition of a (chemical) binder.
- these fibers can also be added - either already in the pulp suspension - or shortly before the (first) hydraulic consolidation binding fibers.
- the binding fibers can, as at the beginning executed, based on the fibers of the invention be designed comparatively low limp, to provide a higher overall strength for the nonwoven web during hydraulic consolidation by their entanglement. In principle, it would be conceivable to dispense with the binder section independently of the illustrated embodiment.
- a conventional device for producing such a nonwoven web generally comprises the components shown in FIGS. 1 and 2, but no (pre-) consolidation devices 4 and 6.
- the aforementioned (pre) solidification devices 4 are now used and 6 mounted at said locations and preferably then removes the binder section.
- a conventional transport screen can be provided.
- conventional devices that provide thermal or chemical bonding of the fibers to make a nonwoven web without hydraulic consolidation may be provided.
- Such a conventional device can be quickly, easily and inexpensively converted to a device according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016217481.9A DE102016217481A1 (de) | 2016-09-14 | 2016-09-14 | Verfahren zur Herstellung eines nassgelegten Vliesstoffes |
PCT/EP2017/072715 WO2018050588A1 (de) | 2016-09-14 | 2017-09-11 | Verfahren zur herstellung eines nassgelegten vliesstoffes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3512993A1 true EP3512993A1 (de) | 2019-07-24 |
EP3512993B1 EP3512993B1 (de) | 2024-01-10 |
Family
ID=59887243
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17768069.1A Active EP3512993B1 (de) | 2016-09-14 | 2017-09-11 | Verfahren zur herstellung eines nassgelegten vliesstoffes |
Country Status (5)
Country | Link |
---|---|
US (1) | US11578439B2 (de) |
EP (1) | EP3512993B1 (de) |
DE (1) | DE102016217481A1 (de) |
FI (1) | FI3512993T3 (de) |
WO (1) | WO2018050588A1 (de) |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD251808B5 (de) * | 1985-05-06 | 1993-10-28 | Ver Daemmstoffwerke & Mineralw | Verfahren und vorrichtung zur herstellung von mineralfaservliesstoffen |
US4775579A (en) * | 1987-11-05 | 1988-10-04 | James River Corporation Of Virginia | Hydroentangled elastic and nonelastic filaments |
US5334446A (en) * | 1992-01-24 | 1994-08-02 | Fiberweb North America, Inc. | Composite elastic nonwoven fabric |
US5393599A (en) * | 1992-01-24 | 1995-02-28 | Fiberweb North America, Inc. | Composite nonwoven fabrics |
US6110848A (en) | 1998-10-09 | 2000-08-29 | Fort James Corporation | Hydroentangled three ply webs and products made therefrom |
US20020142689A1 (en) * | 2001-01-23 | 2002-10-03 | Levit Mikhail R. | Non-woven sheet of aramid floc |
US7703405B2 (en) * | 2005-09-22 | 2010-04-27 | Waubridge Specialty Fabrics, Llc | Method of producing a fire resistant fabric with stitchbonding |
MX2008013029A (es) * | 2006-04-10 | 2008-10-31 | First Quality Nonwovens Inc | Genero compuesto de no tejido / pulpa, coestricado y metodo para fabricarlo. |
BRPI0924073B1 (pt) * | 2009-01-05 | 2021-02-02 | Unifrax I Llc | manta de isolamento de fibras inorgânicas biossolúveis substancialmente não expansiva de alta resistência e processo para a produção da referida manta |
DE102009031635A1 (de) | 2009-07-03 | 2011-01-05 | Fleissner Gmbh | Vliesstoff sowie Verfahren und Vorrichtung zur Herstellung eines solchen Vliesstoffes |
KR20120074284A (ko) * | 2009-09-24 | 2012-07-05 | 유니프랙스 아이 엘엘씨 | 다층 매트 및 배기 가스 처리 장치 |
US9945057B2 (en) | 2010-02-17 | 2018-04-17 | Johns Manville | Method of making fibrous products and products |
SG189540A1 (en) * | 2010-10-27 | 2013-06-28 | Teijin Ltd | Biomass-derived polyester staple fibers and wet-laid nonwoven fabric formed from the same |
CN103210131B (zh) * | 2010-11-22 | 2015-09-30 | 花王株式会社 | 蓬松片材及其制造方法 |
US8763219B2 (en) | 2011-05-04 | 2014-07-01 | Sca Hygiene Products Ab | Method of producing a hydroentangled nonwoven material |
WO2015000685A1 (de) * | 2013-07-04 | 2015-01-08 | Voith Patent Gmbh | Verfahren und vorrichtung zur herstellung von vliesstoff |
DE102014107725A1 (de) | 2014-06-02 | 2015-12-03 | TRüTZSCHLER GMBH & CO. KG | Verfahren zur Herstellung eines strukturierbaren mehrschichtigen Vlieses und mehrschichtiges Vlies |
EP3177760B1 (de) * | 2014-08-07 | 2022-09-14 | GPCP IP Holdings LLC | Strukturierter, dispergierbarer vliesstoff aus wasserstrahlvernadelten individuellen bastfasern |
CN107002331B (zh) | 2014-09-18 | 2019-04-02 | 福伊特专利有限公司 | 用于制造无纺织物的方法和设备 |
PL3445900T3 (pl) * | 2016-04-22 | 2022-07-11 | Fiberlean Technologies Limited | Włókna obejmujące mikrofibrylarną celulozę oraz sposoby wytwarzania włókien i włókniny z tych materiałów |
-
2016
- 2016-09-14 DE DE102016217481.9A patent/DE102016217481A1/de active Pending
-
2017
- 2017-09-11 US US16/331,553 patent/US11578439B2/en active Active
- 2017-09-11 EP EP17768069.1A patent/EP3512993B1/de active Active
- 2017-09-11 WO PCT/EP2017/072715 patent/WO2018050588A1/de unknown
- 2017-09-11 FI FIEP17768069.1T patent/FI3512993T3/fi active
Also Published As
Publication number | Publication date |
---|---|
FI3512993T3 (fi) | 2024-04-17 |
WO2018050588A1 (de) | 2018-03-22 |
US11578439B2 (en) | 2023-02-14 |
EP3512993B1 (de) | 2024-01-10 |
DE102016217481A1 (de) | 2018-03-15 |
US20190249346A1 (en) | 2019-08-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1967628B2 (de) | Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses | |
DE60030120T2 (de) | Verfahren zur herstellung eines vliesstoffes, anlage zur durchführung dieses verfahren, hergestellter vliesstoff | |
EP2630287B1 (de) | Verfahren und vorrichtung zur herstellung eines verbundvlieses | |
EP3118361B1 (de) | Anlage und verfahren zur herstellung eines mehrschichtigen vlieses aus mindestens einem unverfestigtem faserflor | |
EP3017104B1 (de) | Verfahren zum umrüsten und betreiben einer vorrichtung zum herstellen von vliesstoff | |
EP2128320B1 (de) | Verfahren und Vorrichtung zur Herstellung von Spinnvliesen aus Filamenten | |
WO2010088870A1 (de) | Verfahren und vorrichtung zur herstellung von watteprodukten | |
DE102014107725A1 (de) | Verfahren zur Herstellung eines strukturierbaren mehrschichtigen Vlieses und mehrschichtiges Vlies | |
EP3017105B1 (de) | Verfahren und vorrichtung zur herstellung von vliesstoff | |
DE102010047105A1 (de) | Mehrschichtiges Verbundmaterial mit elastischen Eigenschaften | |
WO2015000690A1 (de) | Verfahren und kompakte vorrichtung zur herstellung von vliesstoff | |
WO2009112008A1 (de) | Verfahren und vorrichtung zur vorverfestigung eines vlieses | |
EP1447466B1 (de) | Verfahren zur Herstellung eines Spinnvlieses aus Filamenten | |
WO2015000685A1 (de) | Verfahren und vorrichtung zur herstellung von vliesstoff | |
DE102016217400A1 (de) | Verfahren und Vorrichtung zur Herstellung eines nassgelegten Vliesstoffes | |
DE102020113137A1 (de) | Anlage und Verfahren zur Herstellung eines mehrlagigen Vlieses | |
EP3512993B1 (de) | Verfahren zur herstellung eines nassgelegten vliesstoffes | |
WO2008080382A1 (de) | Verfahren und vorrichtung zur herstellung eines ein- oder mehrlagigen vlies | |
EP3604670B1 (de) | Vorrichtung zur entwässerung einer nassgelegten vliesstoffbahn | |
DE102016217401A1 (de) | Verfahren und Vorrichtung zur Herstellung eines nassgelegten Vliesstoffes | |
DE10258112B4 (de) | Verfahren zur Herstellung eines Flächengebildes aus zumindest teilweise gesplitteten Garnen, Fasern oder Filamenten | |
DE102005048758A1 (de) | Stabiles Faserlaminat sowie Verfahren und Vorrichtung zur Herstellung desselben | |
EP3535445A1 (de) | Verfahren zur herstellung eines nassgelegten vliesstoffes | |
WO2015028275A1 (de) | Schrägsiebformer, verfahren zur herstellung einer nassgelegten vliesstoffbahn mittels eines schrägsiebformers und vliesstoffbahn | |
WO2015000689A1 (de) | Verfahren und vorrichtung zur herstellung von vliesstoff insbesondere nach einem nassverfahren |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20190415 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TRUETZSCHLER GMBH & CO. KG Owner name: VOITH PATENT GMBH |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20220302 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R079 Ref document number: 502017015752 Country of ref document: DE Free format text: PREVIOUS MAIN CLASS: D04H0001492000 Ipc: D04H0001485000 Ref country code: DE Ref legal event code: R079 Free format text: PREVIOUS MAIN CLASS: D04H0001492000 Ipc: D04H0001485000 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
TPAB | Information related to observations by third parties deleted |
Free format text: ORIGINAL CODE: EPIDOSDTIPA |
|
TPAC | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOSNTIPA |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: D04H 18/04 20120101ALI20230124BHEP Ipc: D04H 1/492 20120101ALI20230124BHEP Ipc: D04H 1/732 20120101ALI20230124BHEP Ipc: D04H 1/485 20120101AFI20230124BHEP |
|
INTG | Intention to grant announced |
Effective date: 20230209 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230613 |
|
GRAJ | Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR1 |
|
GRAL | Information related to payment of fee for publishing/printing deleted |
Free format text: ORIGINAL CODE: EPIDOSDIGR3 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
INTC | Intention to grant announced (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20230928 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502017015752 Country of ref document: DE Owner name: TRUETZSCHLER GROUP SE, DE Free format text: FORMER OWNER: ANMELDERANGABEN UNKLAR / UNVOLLSTAENDIG, 80297 MUENCHEN, DE Ref country code: DE Ref legal event code: R081 Ref document number: 502017015752 Country of ref document: DE Owner name: TRUETZSCHLER GROUP SE, DE Free format text: FORMER OWNERS: TRUETZSCHLER GMBH & CO. KG, 41199 MOENCHENGLADBACH, DE; VOITH PATENT GMBH, 89522 HEIDENHEIM, DE Ref country code: DE Ref legal event code: R096 Ref document number: 502017015752 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG9D |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20240110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national 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: 20240110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national 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: 20240110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS 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: 20240510 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT 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: 20240110 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
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: 20240411 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HR 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: 20240110 Ref country code: RS 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: 20240410 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national 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: 20240110 |