DE1088016B - Process for the production of binder-free nonwovens - Google Patents

Process for the production of binder-free nonwovens

Info

Publication number
DE1088016B
DE1088016B DEF24465A DEF0024465A DE1088016B DE 1088016 B DE1088016 B DE 1088016B DE F24465 A DEF24465 A DE F24465A DE F0024465 A DEF0024465 A DE F0024465A DE 1088016 B DE1088016 B DE 1088016B
Authority
DE
Germany
Prior art keywords
water
binder
fibers
nonwovens
soluble
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.)
Pending
Application number
DEF24465A
Other languages
German (de)
Inventor
Dr Carl-Ludwig Nottebohm
Dr Robert Schabert
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.)
Carl Freudenberg KG
Original Assignee
Carl Freudenberg KG
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
Priority to NL232499D priority Critical patent/NL232499A/xx
Priority to NL239039D priority patent/NL239039A/xx
Priority to NL207228D priority patent/NL207228A/xx
Priority to BE578545D priority patent/BE578545A/xx
Application filed by Carl Freudenberg KG filed Critical Carl Freudenberg KG
Priority to DEF24465A priority patent/DE1088016B/en
Priority to DEF25732A priority patent/DE1094227B/en
Priority to AT697258A priority patent/AT207228B/en
Priority to FR1213162D priority patent/FR1213162A/en
Priority to GB37778/58A priority patent/GB876444A/en
Priority to FR793977A priority patent/FR1226786A/en
Priority to GB15573/59A priority patent/GB906771A/en
Publication of DE1088016B publication Critical patent/DE1088016B/en
Pending legal-status Critical Current

Links

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
    • D04H1/42—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
    • D04H1/4282—Addition polymers
    • D04H1/4309—Polyvinyl alcohol
    • 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
    • D04H1/4258—Regenerated 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
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • 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
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
    • D06M15/423—Amino-aldehyde resins
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
    • E04C3/26—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members prestressed

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Description

DEUTSCHESGERMAN

Es sind bereits verschiedene Verfahren zum Herstellen von ungewebten Vliesstoffen durch Imprägnieren von Faservliesen mit Bindemitteln, wie Kunstkautschuk, Naturkautschuk, Kunstharzen od. dgl., und Verfestigung der Imprägnierung, z. 'B. durch Wärmebehandlung, bekannt.Various methods of manufacture are already in place of non-woven nonwovens by impregnating fiber nonwovens with binders such as synthetic rubber, Natural rubber, synthetic resins od. Like., And solidification of the impregnation, z. 'B. by Heat treatment, known.

Diese Vliesstoffe sind durch einen verhältnismäßig hohen Bindemittelanteil gekennzeichnet.These nonwovens are characterized by a relatively high proportion of binder.

Man hat auch schon bindemittelfreie Vliesstoffe unter Verwendung von Fasermischungen, die ganz oder teilweise aus thermoplastischen Fasern bestehen, hergestellt. Um hier die Verfestigung zu erzielen, muß man die lockeren Vliese einer solchen Temperatur aussetzen, bei der der thermoplastische Faseranteil zu erweichen beginnt. Hierzu ist ein erheblicher appa'-rativer Aufwand erforderlich.One also has binder-free nonwovens using fiber blends that are completely or partly made of thermoplastic fibers. To achieve the consolidation here, you have to expose the loose fleece to a temperature at which the thermoplastic fiber content begins to soften. This requires a considerable amount of expenditure in terms of apparatus.

Es wurde nun gefunden, daß man bindemittelfreie Vliesstoffe in einfachster Weise erhält, wenn man einem üblichen Textilfaservlies solche Fasern beimengt, deren Oberfläche durch heißes Wasser bzw. überhitzten Dampf klebrig wird.It has now been found that binder-free nonwovens are obtained in the simplest manner if one such fibers are added to a conventional textile fiber fleece, the surface of which has been damaged by hot water or superheated steam becomes sticky.

Dieses Verfahren unterscheidet sich von den ebenfalls bekannten Verfahren zum Verfestigen von Faservliesen mittels wäßriger Lösungen irgendwelcher Chemikalien (welche die Oberfläche und auch die inneren Teile der Faser zerstören) durch die Erhaltung der Reißfestigkeit und Elastizität der nicht wasserlöslichen Fasern. Ferner fällt ein Arbeitsgang, nämlich das Auswaschen der Chemikalien nach dem Verfestigen, fort. Da das Imprägniermittel Wasser praktisch nichts kostet, wird auch, eine beträchtliche Einsparung erreicht.This procedure is different from the ones as well known method for consolidating fiber webs by means of aqueous solutions of any Chemicals (which destroy the surface and also the inner parts of the fiber) by preservation the tensile strength and elasticity of the water-insoluble fibers. There is also an operation namely the washing out of the chemicals after solidification continues. As the waterproofing agent is water costs practically nothing, a considerable saving is also achieved.

Für die Durchführung dieses Verfahrens kommen u. a. Fasern aus wasserlöslichen Stoffen, wie z. B. ungehärtete Polyvinylalkoholfasern, Alginatfasern, ungehärtete Proteinfasern usw., ferner Fasern, die aus Mischungen, von wasserlöslichen Stoffen mit wasserunlöslichen oder schwerlöslichen Stoffen bestehen, z. B. Fasern, die zum Teil Polyvinylalkohol, zum Teil Polyamid, z. B. etwa 70 % Polyvinylalkohol und 30 % Polyamid enthalten, und schließlich auch noch Fasern in Betracht, die an sich wasserunlöslich oder schwer löslich sind, aber deren Oberflächenschicht in wasserlösliche Form umgewandelt ist, z. B. Polyvinylacetatfasern, die oberflächlich verseift sind. 4-5Fibers made from water-soluble substances, such as. B. uncured polyvinyl alcohol fibers, alginate fibers, uncured protein fibers, etc., also fibers that consist of mixtures of water-soluble substances with water-insoluble or sparingly soluble substances, eg. B. fibers, some of which are polyvinyl alcohol, some of which are polyamide, e.g. B. contain about 70% polyvinyl alcohol and 30% polyamide, and finally fibers that are insoluble or sparingly soluble in water, but whose surface layer is converted into water-soluble form, z. B. polyvinyl acetate fibers that are superficially saponified. 4-5

Der Gehalt der erfmdungsgemäß anzuwendenden Fasergemische an durch Wasser anlösbaren Fasern kann in weiten. Grenzen schwanken; er kann z. B. zwischen 1 und etwa 60% liegen. Die erfindungsgemäß anzuwendenden Vliese können vor der Behandlung mit Wasser oder wäßrigen Lösungen noch gewissen Vorbehandlungen unterworfen werden, z. B. derart, daß sie voirgefuzt, vorgenadelt oder vorgepreßt werden.The content of the fiber mixtures to be used according to the invention in water-soluble fibers can in wide. Boundaries fluctuate; he can z. B. be between 1 and about 60%. According to the invention The nonwovens to be used can still be certain prior to treatment with water or aqueous solutions Are subjected to pretreatments, e.g. B. such that they voirgefuzt, pre-needled or pre-pressed will.

Verfahren zum Herstellen
von bindemittelfreien VliesstoffenMethod of manufacture
of binder-free nonwovens

Anmelder:Applicant:

Fa. Carl Freudenberg,
Weinheim (a. d. Bergstraße)Carl Freudenberg,
Weinheim (ad Bergstrasse)

Dr. Carl-Ludwig Nottebohm und Dr. Robert Schabert,Dr. Carl-Ludwig Nottebohm and Dr. Robert Schabert,

Weinheim (a. d. Bergstraße),
sind als Erfinder genannt wordenWeinheim (ad Bergstrasse),
have been named as inventors

Da die so hergestellten Vliese nicht gegen heißes Wasser beständig sind, empfiehlt sich eine Nachbehandlung mit saurer Formaldehydlösung und/oder einer üblichen Textilausrüstung.Since the nonwovens produced in this way are not resistant to hot water, post-treatment is recommended with acidic formaldehyde solution and / or a conventional textile finish.

Der unter Druck durchzuführende Trockenvorgang wird zweckmäßig unter Bedingungen durchgeführt, bei denen das durchfeuchtete Vlies in seiner Lage fixiert wird. Durch Trocknen unter Druck unter Fixieren der Gebilde in ihrer Lage wird der Vorteil erzielt, daß ein schädliches Schrumpfen der durchfeuchteten Fasergebilde vermieden wird und Fertigprodukte erhalten werden, die besonders gute Festigkeit aufweisen. Zwecks Durchführung des Trocknungsvorganges unter Druck kann man mit Vorteil derart verfahren, daß die durchfeuchteten Gebilde durch einen Filzkalander geführt werden. Hierbei wird das durchfeuchtete Vlies in seiner Lage fixiert und gleichzeitig ein ausreichender Druck auf das Vliesgebilde ausgeübt. Auch Muldenpressen haben sich für die Durchführung des Trocknungsvorganges als geeignet erwiesen.The drying process to be carried out under pressure is expediently carried out under conditions in which the moistened fleece is fixed in its position. By drying under pressure under Fixing the structures in their position, the advantage is achieved that a damaging shrinkage of the moistened Fiber structure is avoided and finished products are obtained that have particularly good strength exhibit. For the purpose of carrying out the drying process under pressure, one can with advantage proceed in such a way that the moistened structures are passed through a felt calender. Here the moistened fleece is fixed in its position and at the same time there is sufficient pressure on the Nonwoven structure exercised. Trough presses have also been used to carry out the drying process proved suitable.

Bei Durchführung des Verfahrens werden die durch Wasser anlösbaren Fasern je nach den Arbeitsbedingungen, z. B. mit Bezug auf Höhe der Temperatur und Verweilzeit, mehr oder weniger weitgehend angelöst, wobei die Faserstruktur als solche weitgehend erhalten bleibt.When carrying out the process, the water-soluble fibers, depending on the working conditions, z. B. with regard to the level of temperature and dwell time, more or less largely dissolved, whereby the fiber structure as such is largely retained.

Die Trockentemperaturen können im allgemeinen im Bereich von etwa 90 bis 175° C gehalten werden.The drying temperatures can generally be maintained in the range from about 90 to 175 ° C.

009 589/190009 589/190

Die Einwirkungsdauer kann im allgemeinen etwa V2 Minute bis 2 Minuten betragen. Die Möglichkeit, den Trocknungsvorgang innerhalb eines weiten Temperaturbereiches durchzuführen, gestattet die Herstellung dicker Gebilde, ohne daß Schwächungen des Verbandes an irgendeiner Stelle zu befürchten sind.The duration of action can generally be from about 2 minutes to 2 minutes. The possibility, Carrying out the drying process within a wide temperature range allows production thick structure without fear of weakening the bandage at any point.

Die Erfindung sei nachstehend unter Anwendung von ungehärteten Polyvinylalkoholfasern als mit' Wasser anlösliche Fasern eingehend erläutert.The invention is hereinafter referred to using uncured polyvinyl alcohol fibers as with ' Water soluble fibers explained in detail.

Beispiel 1
Ein Faservlies, bestehend aus
96 °/o Baumwolle,
4°/o wasserlöslichen Polyvinylalkoholfasern, X5example 1
A fiber fleece, consisting of
96 ° / o cotton,
4 ° / o water-soluble polyvinyl alcohol fibers, X 5

wird durch einen Foulard mit Wasser gezogen, anschließend auf dem Filzkalander bei 120° C getrocknet. Man erhält ein weiches Material, das z. B. als Schuhzwischenfutter geeignet ist, ferner brauchbar ist, um es ohne Strukturänderung mit einem anderen Kunstharz zu tränken.is drawn through a padder with water, then dried on a felt calender at 120 ° C. A soft material is obtained which, for. B. is suitable as a shoe lining, also useful is to impregnate it with another synthetic resin without changing its structure.

Beispiel 2Example 2

Ein Faservlies, bestehend aus
85 % Zellwolle,
15 °/o wasserlöslichen Polyvinylalkoholfasern,A fiber fleece, consisting of
85% rayon,
15 ° / o water-soluble polyvinyl alcohol fibers,

wird zu einem Vlies gekrempelt, durch einen Foulard mit Wasser gezogen und anschließend auf der Muldenpresse bei 120° C getrocknet. Es resultiert ein Material mit%erstaunlich hoher Reißfestigkeit, welches z. B. als Trägermaterial für Polyvinylchlorid-Beschichtungen brauchbar ist oder z. B. als Benzinfilter verwendet werden kann.is carded into a fleece, drawn through a padder with water and then dried on a trough press at 120 ° C. The result is a material with % surprisingly high tear strength, which z. B. is useful as a carrier material for polyvinyl chloride coatings or z. B. can be used as a gasoline filter.

Beispiel 3Example 3

Das Material nach Beispiel 2 wird in einem weiteren Arbeitsgang 3 Minuten lang bei 85° C mit einer Lösung behandelt, dieThe material according to Example 2 is in a further operation for 3 minutes at 85 ° C with a Solution handles that

5 % Formaldehyd,
20% Natriumsulfat,
5 % Salzsäure5% formaldehyde,
20% sodium sulfate,
5% hydrochloric acid

enthält. Das Material nach Beispiel 2 wird durch diese Behandlung beständig gegen Kochwasser.contains. This treatment makes the material according to Example 2 resistant to boiling water.

Claims (4)

Patentansprüche:Patent claims: 1. Verfahren zum Herstellen von bindemittelfreien Vliesstoffen, dadurch gekennzeichnet, daß eine Faservliesbahn, die neben üblichen Textilfasern solche Fasern, die in Wasser bei erhöhter Temperatur löslich bzw. anlösbar sind, enthält, mit kaltem oder mäßig warmem Wasser getränkt und das so imprägnierte Vlies unter Druck bei erhöhter Temperatur getrocknet wird.1. Process for producing binder-free Nonwovens, characterized in that a nonwoven web, in addition to conventional textile fibers those fibers that are soluble or solvable in water at elevated temperature contains, with cold or soaked in moderately warm water and the so impregnated fleece under pressure at increased Temperature is dried. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß als in Wasser lösliche bzw. anlösbare Fasern solche aus Polyvinylalkohol verwendet werden.2. The method according to claim 1, characterized in that as soluble or solvable in water Fibers made from polyvinyl alcohol are used. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die bindemittelfreien Vliesstoffe nach dem Verfestigen mit einer üblichen Textilausrüstung versehen werden.3. The method according to claim 1, characterized in that the binder-free nonwovens after solidification are provided with a customary textile finish. 4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die bindemittelfreien Vliesstoffe nach dem Verfestigen mit einer sauren Formaldehydlösung nachbehandelt werden.4. The method according to claim 1, characterized in that the binder-free nonwovens after solidification with an acidic formaldehyde solution. In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 902 427;
USA.-Patentschrift Nr. 2 676 128.Considered publications:
German Patent No. 902 427;
U.S. Patent No. 2,676,128. © 009 589/190 8.60© 009 589/190 8.60
DEF24465A 1957-11-25 1957-11-25 Process for the production of binder-free nonwovens Pending DE1088016B (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
NL232499D NL232499A (en) 1957-11-25
NL239039D NL239039A (en) 1957-11-25
NL207228D NL207228A (en) 1957-11-25
BE578545D BE578545A (en) 1957-11-25
DEF24465A DE1088016B (en) 1957-11-25 1957-11-25 Process for the production of binder-free nonwovens
DEF25732A DE1094227B (en) 1957-11-25 1958-05-10 Process for the production of nonwovens
AT697258A AT207228B (en) 1957-11-25 1958-10-03 Process for the production of non-woven fiber structures
FR1213162D FR1213162A (en) 1957-11-25 1958-11-05 Manufacturing process of non-woven fiber articles
GB37778/58A GB876444A (en) 1957-11-25 1958-11-24 Improvements in or relating to bonded fibrous structures
FR793977A FR1226786A (en) 1957-11-25 1959-05-05 Process for the preparation of nonwoven fiber structures resistant to washing and boiling, insensitive to chemical cleaning agents
GB15573/59A GB906771A (en) 1957-11-25 1959-05-06 Improvements in rendering non-woven fabrics containing polyvinyl alcohol fibres resistant to water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF24465A DE1088016B (en) 1957-11-25 1957-11-25 Process for the production of binder-free nonwovens

Publications (1)

Publication Number Publication Date
DE1088016B true DE1088016B (en) 1960-09-01

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ID=7091240

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF24465A Pending DE1088016B (en) 1957-11-25 1957-11-25 Process for the production of binder-free nonwovens

Country Status (1)

Country Link
DE (1) DE1088016B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281384B (en) * 1963-10-25 1968-10-24 Freudenberg Carl Fa Process for the production of polyurethane nonwovens
DE2247751A1 (en) * 1972-09-29 1974-04-11 Freudenberg Carl Fa CARRIER SLEEVE
DE1282590B (en) * 1963-10-25 1975-02-13 Fa. Carl Freudenberg, 6940 Weinheim Apparatus for the production of random fiber nonwovens from endless polymer fibers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676128A (en) * 1951-06-18 1954-04-20 Du Pont Process of preparing nonwoven fabric and product
DE902427C (en) * 1948-10-12 1955-04-04 Dr Otto Eisenhut Process for the production of strong, washable, fabric-like, felted fabrics from cellulose fibers without spinning and weaving

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE902427C (en) * 1948-10-12 1955-04-04 Dr Otto Eisenhut Process for the production of strong, washable, fabric-like, felted fabrics from cellulose fibers without spinning and weaving
US2676128A (en) * 1951-06-18 1954-04-20 Du Pont Process of preparing nonwoven fabric and product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1281384B (en) * 1963-10-25 1968-10-24 Freudenberg Carl Fa Process for the production of polyurethane nonwovens
DE1282590B (en) * 1963-10-25 1975-02-13 Fa. Carl Freudenberg, 6940 Weinheim Apparatus for the production of random fiber nonwovens from endless polymer fibers
DE2247751A1 (en) * 1972-09-29 1974-04-11 Freudenberg Carl Fa CARRIER SLEEVE

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