IT9021286A1 - PROCEDURE TO PRODUCE A FLEECE FROM TEXTILE FIBERS OF SYNTHETIC THERMOPLASTIC MATERIAL - Google Patents

PROCEDURE TO PRODUCE A FLEECE FROM TEXTILE FIBERS OF SYNTHETIC THERMOPLASTIC MATERIAL Download PDF

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Publication number
IT9021286A1
IT9021286A1 IT021286A IT2128690A IT9021286A1 IT 9021286 A1 IT9021286 A1 IT 9021286A1 IT 021286 A IT021286 A IT 021286A IT 2128690 A IT2128690 A IT 2128690A IT 9021286 A1 IT9021286 A1 IT 9021286A1
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IT
Italy
Prior art keywords
textile fibers
fleece
spinneret
synthetic material
continuous body
Prior art date
Application number
IT021286A
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Italian (it)
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IT1243792B (en
IT9021286A0 (en
Inventor
Hermann Balk
Original Assignee
Reifenhaeuser Masch
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Publication of IT9021286A0 publication Critical patent/IT9021286A0/en
Publication of IT9021286A1 publication Critical patent/IT9021286A1/en
Application granted granted Critical
Publication of IT1243792B publication Critical patent/IT1243792B/en

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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
    • D04H1/724—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 forming webs during fibre formation, e.g. flash-spinning
    • 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
    • D04H1/736—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 characterised by the apparatus for arranging 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • D04H3/147—Composite yarns or filaments
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

Descrizione di un'invenzione avente titolo: Description of an invention entitled:

"PROCEDIMENTO PER PRODURRE UN VELLO DI FIBRE TESSILI DI MATE-RIALE SINTETICO TERMOPLASTICO" "PROCEDURE FOR PRODUCING A TEXTILE FIBER OF SYNTHETIC THERMOPLASTIC MATERIAL"

DESCRIZIONE DESCRIPTION

L'invenzione si riferisce ad un procedimento per produrre un vello di fibre tessili di materiale sintetico termoplastico, ove il materiale sintetico termoplastificato viene alimentato ad una testa ad ugelli con almeno una filiera, nella quale esso entra come corpo continuo, ove il corpo continuo viene scomposto in fibre tessili soffiando aria calda ed in cui le fibre tessili nell 'ambito della filiera vengono raffreddate nonché contemporaneamente o successivamente deposte come vello su un nastro trasportatore e come vello esse vengono estratte dal nastro trasportatore. S'intende che una tale testa a filiere presenta almeno una pluralità di filiere. Le fibre tessili vengono denominate anche microfibre. The invention relates to a process for producing a fleece of textile fibers of thermoplastic synthetic material, where the thermoplasticized synthetic material is fed to a nozzle head with at least one spinneret, into which it enters as a continuous body, where the continuous body is decomposed into textile fibers by blowing hot air and in which the textile fibers within the spinneret are cooled as well as simultaneously or subsequently deposited as fleece on a conveyor belt and as fleece they are extracted from the conveyor belt. It is understood that such a spinneret head has at least a plurality of spinnerets. Textile fibers are also referred to as microfibers.

Nei noti accorgimenti da cui prende le mosse l 'invenzione (Pubblicazione aziendale "MELT BLOWN INFORMATION REIFENAO-SER", 18.05.1989), si alimenta alla filiera un corpo continuo costituito da un materiale sintetico termoplastificato, chimicamente uniforme e fisicamente il più possibile omogeneo. Il vello è costituito perciò da fibre tessili di un solo materiale. Peraltro è noto produrre l 'uno dopo l 'altro o collocare l'uno sull'altro o unire velli diversi, costituiti a- loro volta da fibre tessili di un solo materiale. Le singole fibre tessili presentano semplicemente le proprietà determinate dal materiale sintetico di cui esse sono costituite. Pertanto anche le proprietà del vello finito non possono essere programmate in forma molteplice e quindi essere predisposte per diversi scopi d'impiego. In the well-known precautions from which the invention is based (corporate publication "MELT BLOWN INFORMATION REIFENAO-SER", 18.05.1989), a continuous body is fed to the supply chain consisting of a thermoplasticized synthetic material, chemically uniform and physically as homogeneous as possible . The fleece is therefore made up of textile fibers of a single material. Moreover, it is known to produce one after the other or to place one on top of the other or to join different fleeces, which in turn are made up of textile fibers of a single material. The individual textile fibers simply have the properties determined by the synthetic material of which they are made. Therefore also the properties of the finished fleece cannot be programmed in multiple form and therefore be predisposed for different purposes of use.

L'invenzione si pone il compito di indicare un procedimento per produrre un vello di fibre tessili di materiale sintetico termoplastico, con cui sia possibile produrre velli di proprietà molto differenti. The invention has the aim of indicating a process for producing a fleece of textile fibers of thermoplastic synthetic material, with which it is possible to produce fleeces of very different properties.

Per risolvere questo compito l'invenzione insegna, sotto il profilo tecnico del procedimento, che si alimenta alla filiera e si scompone in fibre tessili un corpo continuo formato da almeno due strati, che sono costituiti da materiale sintetico termoplastificato differente chimicamente e/o fisicamente, e che queste fibre di più materiali vengono deposte formando il vello. Secondo l'invenzione si porta alla filatura una massa fusa di materiale sintetico termoplastico, che è costituita da almeno due strati di materiali sintetici differenti dal punto di vista fisico e/o chimico. Il relativo corpo continuo viene smembrato in fibre come al solito. A tal proposito si può operare con una corrente di aria calda e/o una corrente di aria di raffreddamento. In particolare si può lavorare con un getto di aria calda compressa che, alla fuoriuscita dal suo ugello, si espanda così ffortemente che l'abbassamento di temperatura ottenuto sia sufficiente al raffreddamento. To solve this task, the invention teaches, from the technical point of view of the process, that a continuous body formed by at least two layers, which are made of chemically and / or physically different thermoplasticized synthetic material, is fed to the spinneret and decomposed into textile fibers. and that these fibers of multiple materials are deposited forming the fleece. According to the invention, a melt of thermoplastic synthetic material is brought to spinning, which is constituted by at least two layers of synthetic materials different from a physical and / or chemical point of view. Its continuous body is broken up into fibers as usual. In this regard, it is possible to operate with a stream of hot air and / or a stream of cooling air. In particular, it is possible to work with a jet of compressed hot air which, when it comes out of its nozzle, expands so strongly that the lowering of the temperature obtained is sufficient for cooling.

Attraverso la combinazione dei materaili sintetici si possono combinare le loro proprietà. Così il vello può essere regolato in particolare in modo da essere più morbido, più duro, più rigido o in altro modo. Nella combinazione di materiali sintetici termoplastici non aderenti l'uno con l'altro si ottiene, con il procedimento secondo l'invenzione, che le fibre di massa fusa soffiate dalla filiera si scompongano nei singoli componenti. E' così possibile produrre una finissima fibrillizzazione. Si possono produrre quindi fibre sostanzialmente più fini del solito. Se ad esempio si lavora con otto strati di materiale sintetico che non si attaccano tra loro e con filiere abituali per quanto concerne il loro diametro, è possibile ridurre lo spessore delle singole fibre ad 1/8. Ciò è molto importante per le proprietà dei prodotti di microfibre e consente una regolazione su particolari parametri fisici, come finora non era possibile ottenere. In particolare è possibile migliorare sostanzialmente la capacità filtrante, la capacità assorbente ed anche la capacità isolante. By combining synthetic materials, their properties can be combined. Thus the fleece can be adjusted in particular to be softer, harder, stiffer or otherwise. In the combination of non-adherent thermoplastic synthetic materials with each other, it is obtained, with the method according to the invention, that the molten mass fibers blown by the spinneret are broken down into the individual components. It is thus possible to produce a very fine fibrillation. Substantially finer fibers than usual can therefore be produced. For example, if you work with eight layers of synthetic material that do not stick together and with usual dies as regards their diameter, it is possible to reduce the thickness of the individual fibers to 1/8. This is very important for the properties of the microfibre products and allows for adjustment to particular physical parameters, which was not possible up to now. In particular, it is possible to substantially improve the filtering capacity, the absorbing capacity and also the insulating capacity.

Nell'ambito dell'invenzione si hanno in particolare più possibilità di ulteriore sviluppo e forma di realizzazione. In generale si lavorerà con una pluralità di filiere allineate con sezione trasversale circolare dell'ugello e si distribuirà il corpo continuo, composto da almeno i due strati di materiale sintetico termoplastificato, su queste filiere. Una forma d1 realizzazione preferita dell'invenzione è caratterizzata dal fatto che si lavora con almeno una filiera a fessura larga, dalla quale fuoriesce una pellicola termoplastificata a più strati, venendo scomposta con soffiaggio. E' possibile operare tuttavia anche con una filiera 0, rispettivamente, con filiere la cui parete interna è profilata a forma di denti di sega. E1 chiaro che la struttura di questa profilatura è sempre minore della geometria dell'apertura dell 'ugello. Nella forma di realizzazione con una filiera a fessura larga è possibile regolare lo spessore delle fibre tessili attraverso la larghezza della fessura della filiera. Inoltre, s'intende che la velocità dell'aria e/o la sua portata sono parametri regolabili. Within the scope of the invention there are in particular more possibilities for further development and embodiment. In general, a plurality of dies aligned with a circular cross section of the nozzle will be worked and the continuous body, composed of at least two layers of thermoplasticized synthetic material, will be distributed on these dies. A preferred embodiment of the invention is characterized in that one works with at least one wide slit spinneret, from which a multi-layered thermoplasticized film emerges, being decomposed by blowing. However, it is also possible to operate with a spinneret 0, respectively, with dies whose inner wall is profiled in the shape of saw teeth. It is clear that the structure of this profile is always smaller than the geometry of the nozzle opening. In the embodiment with a wide slit spinneret it is possible to adjust the thickness of the textile fibers across the width of the spinneret slot. Furthermore, it is understood that the air velocity and / or its flow rate are adjustable parameters.

Claims (5)

RIVENDICAZIONI 1. Procedimento per produrre un vello di fibre tessili di materiale sintetico termoplastico, in cui il materiale sintetico termoplastico viene alimentato ad una testa ad ugelli con almeno una filiera, in cui esso entra come corpo continuo, ove il corpo continuo viene scomposto in fibre tessili soffiando aria calda ed ove le fibre tessili nell'ambito della testa a filiere vengono raffreddate nonché deposte contemporaneamente 0 successivamente come vello su un nastro trasportatore ed estratte come vello dal nastro trasportatore, caratterizzato dal fatto che un corpo continuo, formato da almeno due strati costituiti di materiale sintetico termoplatificato chimicamente e/o fisicamente differente, viene alimentato alla filiera e scomposto mediante soffiaggio in modo da formare le fibre tessili e che queste fibre tessili di più materiali vengono depositate in modo da formare il vello. CLAIMS 1. Process for producing a fleece of textile fibers of thermoplastic synthetic material, in which the thermoplastic synthetic material is fed to a nozzle head with at least one spinneret, into which it enters as a continuous body, where the continuous body is decomposed into textile fibers by blowing hot air and where the textile fibers within the spinneret head are cooled and simultaneously deposited or subsequently as fleece on a conveyor belt and extracted as fleece from the conveyor belt, characterized in that a continuous body, formed by at least two layers consisting of chemically and / or physically different thermoplatified synthetic material, is fed to the spinneret and decomposed by blowing so as to form the textile fibers and that these textile fibers of several materials are deposited so as to form the fleece. 2. Procedimento secondo la rivendicazione 1, caratterizzato dal fatto che si lavora con una pluralità di filiere allineate con sezione trasversali circolari, e che tra queste viene distribuiito il corpo continuo formato da almeno due strati di materiale sintetico termoplastico. 2. Process according to claim 1, characterized in that one works with a plurality of aligned dies with circular cross-sections, and that the continuous body formed by at least two layers of thermoplastic synthetic material is distributed between these. 3. Procedimento secondo la rivendicazione 1, caratterizzato dal fatto che si lavora con almeno una filiera a fessura larga, da cui fuoriesce una pellicola termoplastificata a più strati e che questa viene scomposta con soffiaggio. 3. Process according to claim 1, characterized in that one works with at least one wide slit die, from which a multi-layered thermoplastic film emerges and which is decomposed by blowing. 4. Procedimento secondo una qualsiasi delle ri vendicazioni da 1 a 3, caratterizzato dal fatto che si lavora con una filiera o con filiere la cui parete interna è profilata a denti di sega. 4. Process according to any one of claims 1 to 3, characterized in that one works with a die or dies whose inner wall is shaped with saw teeth. 5. Procedimento secondo la rivendicazione 3 o una qualsiasi delle rivendicazioni 3 e 4, caratterizzato dal fatto che lo spessore delle fibre tessili è regolato dalla larghezza della fessura della filiera 5. Process according to claim 3 or any of claims 3 and 4, characterized in that the thickness of the textile fibers is governed by the width of the slit in the spinneret
IT02128690A 1989-08-18 1990-08-17 PROCEDURE TO PRODUCE A FLEECE FROM TEXTILE FIBERS OF SYNTHETIC THERMOPLASTIC MATERIAL IT1243792B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3927255A DE3927255A1 (en) 1989-08-18 1989-08-18 METHOD FOR PRODUCING A FLEECE MADE OF THERMOPLASTIC PLASTIC FIBER FIBERS

Publications (3)

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IT9021286A0 IT9021286A0 (en) 1990-08-17
IT9021286A1 true IT9021286A1 (en) 1992-02-17
IT1243792B IT1243792B (en) 1994-06-28

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IT02128690A IT1243792B (en) 1989-08-18 1990-08-17 PROCEDURE TO PRODUCE A FLEECE FROM TEXTILE FIBERS OF SYNTHETIC THERMOPLASTIC MATERIAL

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JP (1) JPH0791751B2 (en)
DE (1) DE3927255A1 (en)
GB (1) GB2235473A (en)
IT (1) IT1243792B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005454B4 (en) * 2000-02-08 2005-08-18 Papierfabrik Schoeller & Hoesch Gmbh & Co. Kg Single layer, both sides abrasive fleece and process for its production

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3700922A (en) * 1970-09-21 1972-10-24 Ibm Fast acting turn-off circuit
DE2125287A1 (en) * 1971-05-21 1972-11-30 Kalle Ag, 6202 Wiesbaden-Biebrich Process for the production of non-woven, fibrous structures
JPS5424005B2 (en) * 1971-11-05 1979-08-17
JPS492975A (en) * 1972-05-02 1974-01-11
JPS5227924Y2 (en) * 1972-09-11 1977-06-25
AU569108B2 (en) * 1983-10-11 1988-01-21 Minnesota Mining And Manufacturing Company Web of bicomponent fibers
US4804577A (en) * 1987-01-27 1989-02-14 Exxon Chemical Patents Inc. Melt blown nonwoven web from fiber comprising an elastomer
JPS6412847A (en) * 1987-07-07 1989-01-17 Sumitomo Heavy Industries Variable magnetoresistance type motor with traveling wave
DE3810596A1 (en) * 1988-03-29 1989-10-12 Bayer Ag FINE FIBERS FROM POLYPHENYL SULFIDE

Also Published As

Publication number Publication date
GB9018267D0 (en) 1990-10-03
GB2235473A (en) 1991-03-06
DE3927255C2 (en) 1992-05-21
IT1243792B (en) 1994-06-28
JPH0791751B2 (en) 1995-10-04
DE3927255A1 (en) 1991-02-21
IT9021286A0 (en) 1990-08-17
JPH03227446A (en) 1991-10-08

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