EP0605687A1 - Process and apparatus for dynamic-flow production of ductile, highly tear-resistant fiber mats. - Google Patents

Process and apparatus for dynamic-flow production of ductile, highly tear-resistant fiber mats.

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Publication number
EP0605687A1
EP0605687A1 EP93914548A EP93914548A EP0605687A1 EP 0605687 A1 EP0605687 A1 EP 0605687A1 EP 93914548 A EP93914548 A EP 93914548A EP 93914548 A EP93914548 A EP 93914548A EP 0605687 A1 EP0605687 A1 EP 0605687A1
Authority
EP
European Patent Office
Prior art keywords
fleece
fibers
drum
fiber mats
machine
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
Application number
EP93914548A
Other languages
German (de)
French (fr)
Other versions
EP0605687B1 (en
Inventor
Wilhelm Bierbaumer
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.)
Kuehnsdorfer Holzfasermattenwerk Pacht- und Betriebsgesellschaft Mbh
KUEHNSDORFER GmbH
Original Assignee
Kuehnsdorfer Holzfasermattenwerk Pacht- und Betriebsgesellschaft Mbh
KUEHNSDORFER GmbH
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
Application filed by Kuehnsdorfer Holzfasermattenwerk Pacht- und Betriebsgesellschaft Mbh, KUEHNSDORFER GmbH filed Critical Kuehnsdorfer Holzfasermattenwerk Pacht- und Betriebsgesellschaft Mbh
Publication of EP0605687A1 publication Critical patent/EP0605687A1/en
Application granted granted Critical
Publication of EP0605687B1 publication Critical patent/EP0605687B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04H1/70—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
    • 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
    • D04H1/488—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 bonding agents
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose 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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/4334—Polyamides
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • 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
    • 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
    • D04H1/40—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
    • 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
    • D04H1/58—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/645—Impregnation followed by a solidification process
    • 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
    • D04H18/02—Needling machines with needles

Definitions

  • the invention relates to a process for the fluid dynamic manufacture of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, wherein a nonwoven cake is mixed in a drum and mixed in from this mixture Fiber fleece is formed, which is consolidated into a fiber mat in a needle machine. It also relates to the use of the fiber mats produced by the method and devices for carrying out this method.
  • nonwovens are mixed in a drum and from this mixture further nonwovens are formed, for example on a nonwoven drum. It has been shown that the transport of the fiberized fiber mass from the drum roll to the nonwoven laying drum is untargeted, which leads to irregularities of the fiber cake on the nonwoven laying drum, such as an irregular basis weight distribution across the width of the nonwoven formed. It also shows that the wood fibers impregnated with synthetic resin come to rest largely due to their higher weight on the underside of the laid fleece, while the thermoplastic and / or the non-impregnated natural fibers of vegetable origin are arranged in the upper layer of the laid fleece . This different layer structure now leads to problems in the further processing of these fiber mats, since the underside of the fiber mats
  • REPLACEMENT LEAF becomes sticky due to its high binder content, while the top is hardly glued.
  • a deformable fiber mat of high tensile strength should have a regular weight distribution in its width and a layer structure which consists of regularly mixed fiber of impregnated and non-impregnated type.
  • the invention provides to achieve the object that the fiber fleece cake 2.2 'is fed to a drum 6.6 *, in which the fiber fleece cake is defibrated, and that this is produced in this way
  • Fiber mass 14, 14 ' can be mixed by an air flow, the flow profile of which can be adjusted by the control elements 25, 26 mounted in an air duct 10, 10' as well as by a venturi rod 7, 7 1 arranged in the flow direction, whereby a fleece 18, 18 'is also mixed regular basis weight distribution is formed, which, after needling, is fed to a pressing device 21, 21 ', whereby a deformable fiber mat of high tensile strength 23, 23' is produced.
  • control elements consist of a plurality of adjustment flaps 25 distributed over the width of the air duct 10 and of a plurality of control parts 26 which are convexly curved towards the air flow and whose curvature is adjustable.
  • the invention further relates to an advantageous use of the fiber mat produced according to the invention, which is characterized in that one or more of the fiber mats 23, 23 'is used for the production of molded parts by pressing under elevated pressure and elevated temperature.
  • the invention also relates to an advantageous device for the fluid dynamic production of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, which are arranged one after the other in the direction of the material flow from a nonwoven laying machine 1, a pair of press rolls 3, 4, a pair of feed rollers 5, a drum 6, an air duct 10 which is fed by fans 12 and in which one or more control parts 25 in the form of one or more adjustment flap (s) are attached, a venturi rod 7 a diffuser. 13, a fleece laying drum 15, transport rollers 16, 17, a basis weight measuring device 19, a needle machine 20, a press device 21, a cutting machine 22 and a stacking device 24.
  • the invention relates to a further advantageous device for the fluid dynamic production of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers impregnated with a binder and thermoplastic fibers and / or natural fibers of vegetable origin, which are arranged one after the other in the direction of the material flow from a fleece laying machine l 1 , a pair of press rollers 3 ', 4', a pair of feed rollers 5 ', a reel 6', an air duct 10 ', which is fed by fans 12', in which one or more control elements 26 are convexly curved toward the air flow Shape and are adjustable in their curvature, a Venturi rod 7 ', from a diffuser 13', a fleece laying drum 15 ', the transport rollers 16', 17 ', a basis weight measuring device 19', a needle machine 20 ', a pressing device 21', a cutting ⁇ demaschine 22 'and a stacking device 24'.
  • REPLACEMENT LEAF Fig. 1 shows the implementation of the method according to the invention by means of a device which is equipped with a control part in the form of an adjustment flap.
  • 3 and 4 show a perspective view in a schematic diagram of the venturi rods used as control parts in the method with the schematic course of the air flow.
  • thermoplastic fibers for example polyester, polyolefin, polyamide, polyacrylic -, EVA and / or natural fibers such as flax, hemp and cellulose fibers
  • a non-woven cake 2.2 *
  • This is then compressed by the feed rollers (3,3 ', 4,4') and fed by means of a pair of feed rollers (5,5 '), a drum (6, 6'), the surface of which is provided with needles or saw teeth which provide the De-fleece the fleece cake (2,2 ').
  • an air flow is generated in the air duct 10, 10', the flow speed of which can be adjusted by several control parts 25, 26 distributed over the width of the air duct (see FIGS. 1, 2).
  • the control parts are in the form of adjusting flaps 2, which are controlled by adjusting devices 11, 11 '.
  • the control parts 26 are curved toward the air flow, the curvature of which is adjustable.
  • the mixing of the fibers in the air flow also depends on the flow rate. This mixing is carried out by the
  • the fleece 18, 18' is needled with a further fleece 27, 27 ', for example consisting of polyester, polyamide, glass fibers or jute, whereby a sufficiently deformable fiber mat 28, 28' is formed.
  • the pressing device 21, 21 ' which can be, for example, a calender or a belt press.
  • the fiber mat is pre-compressed between the calender rolls at a temperature of 25-150 ° C. and a specific pressure of 5-50 kp / cm 2 , the wood fibers impregnated with synthetic resin being bonded even more firmly to the foreign fibers.
  • the fiber mat can also be higher during further processing, for example during compression molding
  • the pre-compressed mats 24, 24 ' are then stacked on passing through the cutting machine 22, 22' on the stacking device 23, 23 '.
  • the fiber mat produced by the method according to the invention is advantageously used for the production of molded parts by pressing under increased pressure and elevated temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Nonwoven Fabrics (AREA)
  • Inorganic Fibers (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Laminated Bodies (AREA)
  • Paper (AREA)

Abstract

Disclosed is a process for dynamic-flow production of ductile, highly tear-resistant fiber mats from a fibrous web consisting of cellulose fibers impregnated with a binder and thermoplastic fibers and/or natural, vegetable fibers, where the apparatus, arranged in the flow direction of the material, consists of a web forming machine (1), a pair of press rollers (3, 4), a pair of draw-in rollers (5), a cylinder (6), an air channel (10) which is fed by ventilators (12) and fitted with one or more control members (25) in the form of one or more adjustable flaps, a venturi rod (7), a diffuser (13), a mat forming roll (15), feed rollers (16, 17), a surface weight measuring device (19), a needle machine (20), a flattening device (21), a cutting machine (22) and a stacking device (24). Disclosed also is the use of a ductile, highly tear-resistant fiber mat produced by the process as per the invention, where one or more of the fiber mats (23, 23') is used for producing form pieces by pressing at elevated pressure and temperature.

Description

Verfahren zur strömungsdynamischen Herstellung von verfoπnbaren Fasermatten hoher Reißfestigkeit sowie Vorrichtung zu deren Herstellung Process for the fluid dynamic production of foamable fiber mats with high tear strength and device for their production
Technisches GebietTechnical field
Die Erfindung betrifft ein Verfahren zur strömungsdynamischen Her- Stellung von verformbaren Fasermatten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel impräg¬ nierten Zellulosefasern und thermoplastischen Fasern und/ oder Naturfasern pflanzlicher Herkunft, wobei ein Faservlieskuchen in einem Tambour gemischt und aus dieser Mischung ein Faservlies gebildet wird, welches in einer Nadelmaschine zu einer Fasermatte verfestigt wird. Sie betrifft ferner die Verwendung der durch das Verfahren hergestellten Fasermatten sowie Vorrichtungen zur Durchführung dieses Verfahrens.The invention relates to a process for the fluid dynamic manufacture of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, wherein a nonwoven cake is mixed in a drum and mixed in from this mixture Fiber fleece is formed, which is consolidated into a fiber mat in a needle machine. It also relates to the use of the fiber mats produced by the method and devices for carrying out this method.
Stand der TechnikState of the art
Das Verfahren der eingangs genannten Art ist aus der AT-PS 387.798 bekannt. Nach einer vorteilhaften Ausgestaltung dieses bekannten Verfahrens werden Faservliese in einem Tambour gemischt und aus' dieser Mischung weitere Vliese beispielsweise auf einer Vlieslegetrommel gebildet. Dabei hat es sich gezeigt, daß der Transport der zerfaserten Fasermasse von der Tambourwalze zur Vlieslegetrommel ungezielt verläuft, wodurch es zu Unregelmäßig¬ keiten des Faserkuchens auf der Vlieslegetrommel wie zu einer unregelmäßigen Flächengewichtsverteilung in der Breite des gebildeten Faservlieses kommt. Ferner zeigt es sich dabei, daß die mit Kunstharz imprägnierten Holzfasern zum großen Teil aufgrund ihres höheren Gewichtes an der Unterseite des gelegten Vlieses zum Liegen kommen, während die thermoplastischen und/oder die nicht imprägnierten Naturfasern pflanzlicher Herkunft sich in der oberen Schichte des gelegten Vlieses anordnen. Dieser unterschiedliche Schichtaufbau führt nunmehr zu Problemen bei der Weiter¬ verarbeitung dieser Fasermatten, da die Unterseite der FasermattenThe method of the type mentioned is known from AT-PS 387.798. According to an advantageous embodiment of this known method, nonwovens are mixed in a drum and from this mixture further nonwovens are formed, for example on a nonwoven drum. It has been shown that the transport of the fiberized fiber mass from the drum roll to the nonwoven laying drum is untargeted, which leads to irregularities of the fiber cake on the nonwoven laying drum, such as an irregular basis weight distribution across the width of the nonwoven formed. It also shows that the wood fibers impregnated with synthetic resin come to rest largely due to their higher weight on the underside of the laid fleece, while the thermoplastic and / or the non-impregnated natural fibers of vegetable origin are arranged in the upper layer of the laid fleece . This different layer structure now leads to problems in the further processing of these fiber mats, since the underside of the fiber mats
ERSATZBLATT wegen ihres zu hohen Bindemittelanteils klebrig wird, während die Oberseite kaum beleimt wird.REPLACEMENT LEAF becomes sticky due to its high binder content, while the top is hardly glued.
Darstellung der ErfindungPresentation of the invention
Die der Erfindung zugrundeliegende Aufgabe besteht nunmehr darin, daß eine verformbare Fasermatte hoher Reißfestigkeit eine regel- mäßige Gewichtsverteilung in ihrer Breite sowie einen Schicht¬ aufbau aufweisen soll, welcher aus regelmäßig durchmischten Faser imprägnierter und nicht imprägnierter Art besteht.The object on which the invention is based is that a deformable fiber mat of high tensile strength should have a regular weight distribution in its width and a layer structure which consists of regularly mixed fiber of impregnated and non-impregnated type.
Ausgehend von dem Verfahren der eingangs genannten Art sieht die Erfindung zur Lösung der gestellten Aufgabe vor, daß der Faser¬ vlieskuchen 2,2' einem Tambour 6,6* zugeführt wird, in dem de Faservlieskuchen zerfasert wird, und daß diese auf diese Weise entstandene Fasermasse 14, 14' durch einen Luftstrom, desse Strömungsprofil durch die in einem Luftkanal 10, 10' angebrachten Regelelemente 25, 26 sowie durch eine in Strömungsrichtun nachgeschaltete Venturistange 7, 71 einstellbar ist, durchmisch wird, wodurch ein Vlies 18, 18' mit regelmäßiger Flächengewichts- Verteilung gebildet wird, welches nach erfolgter Nadelung eine Preßvorrichtung 21, 21' zugeführt wird, wodurch eine verformbar Fasermatte hoher Reißfestigkeit 23, 23' erzeugt wird.On the basis of the method of the type mentioned at the outset, the invention provides to achieve the object that the fiber fleece cake 2.2 'is fed to a drum 6.6 *, in which the fiber fleece cake is defibrated, and that this is produced in this way Fiber mass 14, 14 'can be mixed by an air flow, the flow profile of which can be adjusted by the control elements 25, 26 mounted in an air duct 10, 10' as well as by a venturi rod 7, 7 1 arranged in the flow direction, whereby a fleece 18, 18 'is also mixed regular basis weight distribution is formed, which, after needling, is fed to a pressing device 21, 21 ', whereby a deformable fiber mat of high tensile strength 23, 23' is produced.
Das erfindungsgemäße Verfahren ist ferner dadurch gekennzeichnet, daß die Regelelemente aus mehreren über die Breite des Luftkanals 10 verteilte Einstellklappen 25 und aus mehreren zum Luftstro hin konvex gekrümmten und in ihrer Krümmung verstellbare Regelteilen 26 bestehen.The method according to the invention is further characterized in that the control elements consist of a plurality of adjustment flaps 25 distributed over the width of the air duct 10 and of a plurality of control parts 26 which are convexly curved towards the air flow and whose curvature is adjustable.
Die Erfindung betrifft ferner eine vorteilhafte Verwendung de erfindungsgemäß hergestellten Fasermatte, die dadurc gekennzeichnet ist, daß eine oder mehrere der Fasermatten 23, 23' zur Herstellung von Formteilen durch Verpressen unter erhöhte Druck und erhöhter Temperatur verwendet wird.The invention further relates to an advantageous use of the fiber mat produced according to the invention, which is characterized in that one or more of the fiber mats 23, 23 'is used for the production of molded parts by pressing under elevated pressure and elevated temperature.
ERSATZBLATT Die Erfindung betrifft auch eine vorteilhafte Vorrichtung zur strömungsdynamischen Herstellung von verformbaren Fasermatten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel imprägnierten Zellulosefasern und thermoplastischen Fasern und/oder Naturfasern pflanzlicher Herkunft, welche in Richtung des Materialflusses nacheinander angeordnet aus einer Vlieslegemaschine 1, einem Preßwalzenpaar 3, 4, einem Einzugs- walzenpaar 5, einem Tambour 6, einem Luftkanal 10, der von Ventilatoren 12 gespeist wird und in welchem ein oder mehrere Regelteile 25 in Form einer oder mehrerer Einstellklappe(n) angebracht .sind, einer Venturistange 7, aus einem Diffusor. 13, einer Vlieslegetrommel 15, Transportwalzen 16, 17, einer Flächen- gewichts eßeinrichtung 19, einer Nadelmaschine 20, einer Pre߬ vorrichtung 21, einer Schneidemaschine 22 sowie einer Abstapel- vorrichtung 24 besteht.REPLACEMENT LEAF The invention also relates to an advantageous device for the fluid dynamic production of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, which are arranged one after the other in the direction of the material flow from a nonwoven laying machine 1, a pair of press rolls 3, 4, a pair of feed rollers 5, a drum 6, an air duct 10 which is fed by fans 12 and in which one or more control parts 25 in the form of one or more adjustment flap (s) are attached, a venturi rod 7 a diffuser. 13, a fleece laying drum 15, transport rollers 16, 17, a basis weight measuring device 19, a needle machine 20, a press device 21, a cutting machine 22 and a stacking device 24.
Ferner betrifft die Erfindung eine weitere vorteilhafte Vorrich- tung zur strömungsdynamischen Herstellung von verformbaren Faser¬ matten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel imprägnierten Zellulosefasern und thermo- plastischen Fasern und/oder Naturfasern pflanzlicher Herkunft, welche in Richtung des Materialflusses nacheinander angeordnet aus einer Vlieslegemaschine l1, einem Preßwalzenpaar 3', 4', einem Einzugswalzenpaar 5' , einem Tambour 6' , einem Luftkanal 10' , der von Ventilatoren 12' gespeist wird, in welchem ein oder mehrere Regelelemente 26 in zum Luftstrom hin konvex gekrümmter Form und in ihrer Krümmung verstellbar angebracht sind, einer Venturistange 7', aus einem Diffusor 13', einer Vlieslegetrommel 15', den Transportwalzen 16' , 17' , einer Flächengewichtsmeßeinrichtung 19' , einer Nadelmaschine 20', einer Preßvorrichtung 21', einer Schnei¬ demaschine 22' und einer Abstapelvorrichtung 24' besteht.Furthermore, the invention relates to a further advantageous device for the fluid dynamic production of deformable fiber mats of high tensile strength from a nonwoven fabric, consisting of cellulose fibers impregnated with a binder and thermoplastic fibers and / or natural fibers of vegetable origin, which are arranged one after the other in the direction of the material flow from a fleece laying machine l 1 , a pair of press rollers 3 ', 4', a pair of feed rollers 5 ', a reel 6', an air duct 10 ', which is fed by fans 12', in which one or more control elements 26 are convexly curved toward the air flow Shape and are adjustable in their curvature, a Venturi rod 7 ', from a diffuser 13', a fleece laying drum 15 ', the transport rollers 16', 17 ', a basis weight measuring device 19', a needle machine 20 ', a pressing device 21', a cutting ¬ demaschine 22 'and a stacking device 24'.
Einige Wege zur Ausführung der Erfindung mit der Erläuterung derSome ways of carrying out the invention with the explanation of
Figurencharacters
ERSATZBLATT Fig. 1 zeigt die Durchführung des erfindungsgemäßen Verfahrens mittels einer Vorrichtung, die mit einem Regelteil in Form eine Einstellklappe ausgestattet ist.REPLACEMENT LEAF Fig. 1 shows the implementation of the method according to the invention by means of a device which is equipped with a control part in the form of an adjustment flap.
Fig.2 zeigt die Durchführung des erfindungsgemäßen Verfahrens mittels einer Vorrichtung mit den entsprechenden mit Striche versehenen Bezugszeichen, die mit einem in Form eines zu Luftstrom hin konvex gekrümmten Regelteil ausgestattet ist.2 shows the implementation of the method according to the invention by means of a device with the corresponding reference numerals provided with lines, which is equipped with a control part which is curved in a convex manner towards the air flow.
Die Fig.3 und 4 zeigen in perspektivischer Ansicht in eine Prinzipdarstellung die im Verfahren als Regelteile eingesetzte Venturistangen mit dem schematischen Verlauf der Luftströmung.3 and 4 show a perspective view in a schematic diagram of the venturi rods used as control parts in the method with the schematic course of the air flow.
Bei einer Vlieslegemaschine (1,1') wird aus einer Mischung, bestehend aus mit einem Bindemittel, beispielsweise mit eine Duroplast, Thermoplast oder Elastomer oder Mischungen daraus imprägnierten und anschließend getrockneten Cellulosefasern, un thermoplastischen Fasern, beispielsweise Polyester-, Polyolefin Polyamid-, Polyacryl-, EVA- und/oder Naturfasern wie Flachs-, Hanf- und Cellulosefasern, ein Vlieskuchen (2,2*) gebildet. Diese wird anschließend durch die Freßwalzen (3,3' ,4,4') verdichtet un mittels eines Einzugswalzenpaares (5,5'), einem Tambour (6, 6') zugeführt, dessen Oberfläche mit Nadeln oder Sägezähnen versehe ist, welche den Vlieskuchen (2,2') zerfasern. Durch eine Anzah durch dieselbe Achse angetriebenen Ventilatoren 12, 12' wird i Luftkanal 10, 10' ein Luftstrom erzeugt, dessen Strömungs geschwindigkeit durch mehrere über die Breite des Luftkanal verteilte Regelteile 25, 26 (siehe Figuren 1, 2) einstellbar ist. Gemäß Fig. 1 weisen die Regelteile die Form von Einstellklappen 2 auf, welche durch Stelleinrichtungen 11, 11' gesteuert werden. Di Regelteile 26 (siehe Figur 2) sind zum Luftstrom hin konve gekrümmt, wobei deren Krümmung verstellbar ist.In a fleece laying machine (1, 1 '), a mixture consisting of cellulose fibers impregnated with a binder, for example with a thermoset, thermoplastic or elastomer or mixtures thereof, and then dried, thermoplastic fibers, for example polyester, polyolefin, polyamide, polyacrylic -, EVA and / or natural fibers such as flax, hemp and cellulose fibers, a non-woven cake (2.2 *) is formed. This is then compressed by the feed rollers (3,3 ', 4,4') and fed by means of a pair of feed rollers (5,5 '), a drum (6, 6'), the surface of which is provided with needles or saw teeth which provide the De-fleece the fleece cake (2,2 '). By means of a number of fans 12, 12 'driven by the same axis, an air flow is generated in the air duct 10, 10', the flow speed of which can be adjusted by several control parts 25, 26 distributed over the width of the air duct (see FIGS. 1, 2). 1, the control parts are in the form of adjusting flaps 2, which are controlled by adjusting devices 11, 11 '. The control parts 26 (see FIG. 2) are curved toward the air flow, the curvature of which is adjustable.
Von der Strömungsgeschwindigkeit ist ferner die Durchmischung de Fasern im Luftstrom abhängig. Diese Durchmischung wird durch dieThe mixing of the fibers in the air flow also depends on the flow rate. This mixing is carried out by the
ERSATZBLATT~ Maßgabe einer um + 30° um ihre Achse drehbar verstellbare Venturistange 7,7', die in ihrer Breite modifizierbare Stege 8,8' aufweist, optimiert. In den zwischen den Stegen 8, 8' erzeugten Schlitzen 9,9* (siehe Fig. 3 und 4) wird je nach Breite und Drehstellung der Schlitze die Strömungsgeschwindigkeit des Luft- Fasergemisches erhöht, wodurch eine zusätzliche Durchmischung der Fasern 14, 14' in dem nachgeschalteten Diffusor 13, 13' erfolgt. Ferner bewirkt eine derartig variierbare Strömungsgeschwindigkeit einen Schaufeleffekt, der eine regelmäßige Vlieslegung der Fasern 14,14' auf der Vlieslegetrommel 15,15' ermöglicht. Das so neu gebildete Vlies 18, 18' wird über die Transportwalzen 16, 16'. und 17, 17' der Flächengewichtsmeßeinrichtung 19,19' zugeführt. Diese Meßergebnisse weisen ■ auf eine regelmäßigere Flächengewichts- Verteilung hin als jene Meßergebnisse, die mit den bekannten Verfahren zur Vliesbildung erzielt werden konnten. Sollte die Flächengewichtsverteilung dennoch unzureichend sein, so kann diese durch Veränderung der Strömungsgeschwindigkeiten durch Verstellen eines oder mehrerer Regelteile 25, 26 variiert werden. Ferner ist durch die Verstellbarkeit der Venturistange 7, 7' eine weitere Möglichkeit der Optimierung der Strömungsverhältnisse gegeben.REPLACEMENT LEAF ~ Provided an optimized Venturi rod 7,7 'which can be rotated around its axis by 30 ° and which has webs 8,8' which can be modified in width. In the slots 9, 9 * produced between the webs 8, 8 '(see FIGS. 3 and 4), the flow rate of the air-fiber mixture is increased, depending on the width and rotational position of the slots, as a result of which the fibers 14, 14' in are additionally mixed the downstream diffuser 13, 13 '. Furthermore, such a variable flow rate causes a scoop effect, which enables the fibers 14, 14 'to be laid regularly on the fleece laying drum 15, 15'. The newly formed fleece 18, 18 'is over the transport rollers 16, 16'. and 17, 17 'of the basis weight measuring device 19, 19'. These measurement results indicate ■ a more regular basis weight distribution than those measurement results which could be achieved with the known methods for forming fleece. If the basis weight distribution is nevertheless insufficient, it can be varied by changing the flow velocities by adjusting one or more control parts 25, 26. Furthermore, the adjustability of the venturi rod 7, 7 'provides a further possibility for optimizing the flow conditions.
In der nachfolgenden Nadelmaschine 20, 20' wird das Vlies 18, 18' mit einem weiteren Vlies 27, 27', beispielsweise bestehend aus Polyester-, Polyamid-, Glasfasern oder Jute vernadelt, wodurch eine hinreichend verformbare Fasermatte 28, 28' gebildet wird. Um jedoch eine bessere Verformbarkeit dieser Fasermatte bei der Weiterverarbeitung in Formpressen zu gewährleisten, wird sie durch die Preßvorichtung 21, 21', welche beispielsweise ein Kalander oder eine Bandpresse sein kann, geführt. Zwischen den Kalan¬ derwalzen wird die Fasermatte bei einer Temperatur von 25 - 150°C und einem spezifischen Druck von 5 - 50 kp/cm2 vorverdichtet, wobei die mit Kunstharz imprägnierten Holzfasern noch fester an die Fremdfasern gebunden werden. Dadurch kann die Fasermatte bei der Weiterverarbeitung beispielsweise beim Formpressen auch höhereIn the subsequent needling machine 20, 20 ', the fleece 18, 18' is needled with a further fleece 27, 27 ', for example consisting of polyester, polyamide, glass fibers or jute, whereby a sufficiently deformable fiber mat 28, 28' is formed. However, in order to ensure better deformability of this fiber mat during further processing in molding presses, it is passed through the pressing device 21, 21 ', which can be, for example, a calender or a belt press. The fiber mat is pre-compressed between the calender rolls at a temperature of 25-150 ° C. and a specific pressure of 5-50 kp / cm 2 , the wood fibers impregnated with synthetic resin being bonded even more firmly to the foreign fibers. As a result, the fiber mat can also be higher during further processing, for example during compression molding
ERSATZBLATT Zugkräfte aufnehmen und ist daher weniger anfällig für Rißbil dungen.REPLACEMENT LEAF Absorb tensile forces and is therefore less susceptible to crack formation.
Anschließend werden die vorverdichteten Matten 24, 24' nac Passieren der Schneidemaschine 22,22' auf der Abstapelvorrichtun 23, 23' abgestapelt.The pre-compressed mats 24, 24 'are then stacked on passing through the cutting machine 22, 22' on the stacking device 23, 23 '.
Gewerbliche AnwendbarkeitIndustrial applicability
Die durch das erfindungsgemäße Verfahren hergestellten Fasermatte werden vorteilhafterweise zur Herstellung von Formteilen durc Verpressen unter erhöhtem Druck und erhöhter Temperatur verwendet.The fiber mat produced by the method according to the invention is advantageously used for the production of molded parts by pressing under increased pressure and elevated temperature.
ERSATZBLATT REPLACEMENT LEAF

Claims

Patentansprüche; Claims;
1. Verfahren zur strömungsdynamischen Herstellung von verformba¬ ren Fasermatten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel imprägnierten Zellulosefasern und thermoplastischen Fasern und/oder Naturfasern pflanzlicher Herkunft, wobei ein Faservlieskuchen in einem Tambour gemischt und aus dieser Mischung ein Faservlies gebildet wird, welches in einer Nadelmaschine zu einer Fasermatte verfestigt wird, dadurch gekennzeichnet, daß der Vlieskuchen 2,2' einem Tambour 6,6' zugeführt wird, in dem der Faservlieskuchen zerfasert wird, und daß diese auf diese Weise entstandene Fasermasse 14, 14' durch einen Luftstrom, dessen Strδmungsprofil durch die in einem Luftkanal 10, 10' angebrachten Regelelemente 25, 26 sowie durch eine in Strömungsrichtung nachgeschaltete Venturistange 7, 7' einstellbar ist, durchmischt wird, wodurch ein Vlies 18, 18' mit regelmäßiger Flächengewichtsverteilung gebildet wird, welches nach erfolgter Nadelung einer Preßvorrichtung 21, 21' zugeführt wird, wodurch eine verformbare Fasermatte hoher' Reißfestigkeit 23, 23' erzeugt wird.1. Process for the fluid dynamic production of deformable fiber mats of high tensile strength from a non-woven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, a non-woven cake being mixed in a drum and a non-woven fabric being formed from this mixture, which is solidified in a needle machine to form a fiber mat, characterized in that the fleece cake 2,2 'is fed to a drum 6,6' in which the fiber fleece cake is defibrated, and in that this fiber mass 14, 14 'is formed by a Air flow, the flow profile of which can be adjusted by the control elements 25, 26 attached in an air duct 10, 10 'and by a venturi rod 7, 7' connected downstream in the direction of flow, whereby a fleece 18, 18 'with a regular basis weight distribution is formed, which according to Needling a press device ung 21, 21 'is supplied, whereby a deformable fiber mat high' tear strength 23, 23 'is generated.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Re¬ gelelemente aus mehreren über die Breite des Luftkanals 10 verteilte Einstellklappen 25 bestehen.2. The method according to claim 1, characterized in that the control elements consist of a plurality of adjustment flaps 25 distributed over the width of the air duct 10.
3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Re- gelelemente aus mehreren zum Luftstrom hin konvex gekrümmten und in ihrer Krümmung verstellbaren Regelteilen 26 bestehen.3. The method according to claim 1, characterized in that the control elements consist of several control parts 26 which are convexly curved towards the air flow and adjustable in their curvature.
4. Verwendung einer nach Anspruch 1 hergestellten verformbaren, Fasermatte hoher Reißfestigkeit, dadurch gekennzeichnet, daß eine oder mehrere der Fasermatten 23, 23' zur Herstellung von4. Use of a deformable, high tear strength deformable fiber mat, characterized in that one or more of the fiber mats 23, 23 'for the production of
Formteilen durch Verpressen unter erhöhtem Druck und erhöhter Temperatur verwendet wird.Shaped parts by pressing under increased pressure and elevated temperature is used.
ERSATZBLATT REPLACEMENT LEAF
5. Vorrichtung zur strömungsdynamischen Herstellung von verform¬ baren Fasermatten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel imprägnierten Zellulosefasern und thermoplastischen Fasern und/oder Naturfasern pflanzlicher Herkunft, dadurch gekennzeichnet, daß die Vorrichtung in Materialfluß nacheinander angeordnet aus einer Vlieslegemaschine 1, einem Preßwalzenpaar 3, 4, einem Einzugswalzenpaar 5, einem Tambour 6, einem Luftkanal 10, der von Ventilatoren 12 gespeist wird und in welchem ein oder mehrere Regelteile 25 in Form einer oder mehrerer Einstellklappe(n) angebracht sind, einer Venturistange 7, aus einem Diffuser 13, einer Vlieslegetrommel 15, Transportwalzen 16, 17, einer Flächengewichtsmeßeinrichtung 19, einer Nadelmaschine 20, einer Preßvorrichtung 21, einer Schneide¬ maschine 22, einer Abstapelvorrichtung 24 besteht.5. Device for the fluid dynamic production of deformable fiber mats of high tensile strength from a non-woven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers of vegetable origin impregnated with a binder, characterized in that the device is arranged in material flow in succession from a fleece laying machine 1, one Press roller pair 3, 4, a feed roller pair 5, a drum 6, an air duct 10, which is fed by fans 12 and in which one or more control parts 25 in the form of one or more adjustment flap (s) are attached, a venturi rod 7, from a diffuser 13, a fleece laying drum 15, transport rollers 16, 17, a basis weight measuring device 19, a needle machine 20, a pressing device 21, a cutting machine 22, a stacking device 24.
6. Vorrichtung zur strömungsdynamischen Herstellung von verform- baren Fasermatten hoher Reißfestigkeit aus einem Faservlies, bestehend aus mit einem Bindemittel imprägnierten Zellulose¬ fasern und thermoplastischen Fasern und/oder Naturfasern' pflanzlicher Herkunft, dadurch gekennzeichnet, daß die Vorrichtung in Materialflußrichtung nacheinander angeordnet aus einer Vlieslegemaschine 1', einem Preßwalzenpaar 3', 4', einem Einzugswalzenpaar 5', einem Tambour 6', einem Luftkanal 10', der von Ventilatoren 12' gespeist wird, in welchem ein oder mehrere Regelelemente 26 in zum Luftstrom hin konvex gekrümmter Form und in ihrer Krümmung verstellbar angebracht sind, einer Venturistange 7', aus einem Diffusor 13', einer Vlieslegetrommel 15', den Transportwalzen 16', 17', einer Flächengewichtsmeßeinrichtung 19', einer Nadelmaschine 20', eine Preßvorrichtung 21', einer Schneidemaschine 22', einer Abstapelvorrichtung 24' besteht. 6. Device for the fluid dynamic production of deformable fiber mats of high tear strength from a nonwoven fabric, consisting of cellulose fibers and thermoplastic fibers and / or natural fibers' of vegetable origin impregnated with a binder, characterized in that the device is arranged one after the other in the material flow direction from a nonwoven laying machine 1 ', a pair of press rollers 3', 4 ', a pair of feed rollers 5', a reel 6 ', an air duct 10', which is fed by fans 12 ', in which one or more control elements 26 in a shape convex towards the air flow and in are adjustable in their curvature, a Venturi rod 7 ', made of a diffuser 13', a fleece laying drum 15 ', the transport rollers 16', 17 ', a basis weight measuring device 19', a needle machine 20 ', a pressing device 21', a cutting machine 22 ', a stacking device 24 '.
EP93914548A 1992-07-17 1993-07-15 Process and apparatus for dynamic-flow production of ductile, highly tear-resistant fiber mats Expired - Lifetime EP0605687B1 (en)

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AT0147092A AT398438B (en) 1992-07-17 1992-07-17 METHOD FOR THE FLOW-DYNAMIC PRODUCTION OF DEFORMABLE FIBER MATS OF HIGH TENSILE STRENGTH, AND DEVICE FOR THE PRODUCTION THEREOF
PCT/AT1993/000120 WO1994002673A1 (en) 1992-07-17 1993-07-15 Process and apparatus for dynamic-flow production of ductile, highly tear-resistant fiber mats

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ATE141346T1 (en) 1996-08-15
HUT68090A (en) 1995-05-29
WO1994002673A1 (en) 1994-02-03
ATA147092A (en) 1994-04-15
CZ283384B6 (en) 1998-04-15
HRP931057B1 (en) 1999-04-30
SI9300389A (en) 1994-03-31
CZ62694A3 (en) 1994-06-15
KR940702236A (en) 1994-07-28
HRP931057A2 (en) 1995-10-31
HU9400763D0 (en) 1994-06-28
ES2092315T3 (en) 1996-11-16
HU216949B (en) 1999-10-28
JP3178840B2 (en) 2001-06-25
EP0605687B1 (en) 1996-08-14
ZA935095B (en) 1994-06-01
DE59303438D1 (en) 1996-09-19
JPH06511294A (en) 1994-12-15
MX9304337A (en) 1994-04-29
KR100296021B1 (en) 2001-10-24
AT398438B (en) 1994-12-27

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