EP0227914B1 - Cotton swab and process for its production - Google Patents

Cotton swab and process for its production Download PDF

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Publication number
EP0227914B1
EP0227914B1 EP86115130A EP86115130A EP0227914B1 EP 0227914 B1 EP0227914 B1 EP 0227914B1 EP 86115130 A EP86115130 A EP 86115130A EP 86115130 A EP86115130 A EP 86115130A EP 0227914 B1 EP0227914 B1 EP 0227914B1
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EP
European Patent Office
Prior art keywords
fibers
absorbent cotton
fusible
synthetic
cotton pad
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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.)
Expired - Lifetime
Application number
EP86115130A
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German (de)
French (fr)
Other versions
EP0227914A1 (en
Inventor
Clemens Dipl.-Ing. Linnebur
Maschinenbau-Ingenieur Maximilian Pütz
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Paul Hartmann AG
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Paul Hartmann AG
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Publication date
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Application filed by Paul Hartmann AG filed Critical Paul Hartmann AG
Priority to AT86115130T priority Critical patent/ATE49247T1/en
Publication of EP0227914A1 publication Critical patent/EP0227914A1/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
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5412—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres sheath-core
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—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
    • D04H1/42—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
    • D04H1/54—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
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
    • D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/542—Adhesive fibres
    • D04H1/544—Olefin series

Definitions

  • the invention relates to cotton swabs consisting of solidified cotton and / or viscose fibers, in particular for cosmetic purposes.
  • the cotton swabs used for cosmetic purposes are usually soaked with a make-up or cleaning liquid before use. It is desirable to slow down the swab's suction behavior so that the liquid does not penetrate the surface too quickly and then become ineffective when applied.
  • EP 0 135 403 A1 describes a production process for cotton wool webs in which the fibers of the cotton wool web are intertwined with one another over the entire depth of the cotton wool web by means of a special "hydraulic entanglement" in such a way that the fluff in such cotton wool material is significantly reduced becomes.
  • the object of the invention is to create cotton swabs which are not only superficial, but are lint-free over their entire depth and yet fluffy and have a sufficient suction capacity with the least possible production expenditure.
  • the pressure-free melting or plasticizing of the plastic fiber surfaces enables the formation of an overall soft, fluffy and sufficiently absorbent cotton material.
  • the desired braking of the suction behavior arises from the proportion of the melt fibers.
  • the cotton is given a kind of internal support structure that guarantees a loose structure due to the stable cores of the surface-melted fibers.
  • Cotton and / or viscose fibers (in FIG. 1 a) and melt fibers are fed separately into the metering device 1 in the metering device designated overall by 1, which consists of weighing box feeders 1 a and 1 b, in the desired mixing ratio.
  • the cotton fibers generally have a fiber length of 5 to 40 mm.
  • the fibers are parallelized and formed into a pile 7.
  • the card web is brought to the required final weight of approx. 200 g / m 2 in a subsequent fleece device 3 and hot air then flows through it in a station 4.
  • the station 4 consists of perforated drums, which are evenly penetrated by hot air.
  • the melt fiber is melted in this hot air station, its surface being completely or partially plasticized and combining with the neighboring fiber.
  • the hot air flow which is guided through the drums as homogeneously as possible, has a temperature of approx. 120 - 150 ° C.
  • the cotton web solidified in the station 4 reaches the punch 5, where the cotton swabs 10, preferably in the form of rondelles, are punched out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

1. An absorbent cotton pad consisting of strengthened cotton fibers and/or viscose fibers, characterized by : admixture of synthetic fusible fibers ; said synthetic fusible fibers being uniformly distributed throughout the entire volume of said absorbent cotton pad ; and said synthetic fusible fibers being bonded to the adjacent fibers by fusion of said synthetic fusible fibers, at least at their surface, in a pressureless manner.

Description

Die Erfindung betrifft Wattetupfer, bestehend aus verfestigten Baumwoll- und/oder Viskosefasern, insbesondere für kosmetische Anwendungszwecke.The invention relates to cotton swabs consisting of solidified cotton and / or viscose fibers, in particular for cosmetic purposes.

Die für kosmetische Zwecke verwendeten Wattetupfer werden in der Regel vor ihrem Gebrauch mit einer Abschmink- oder Reinigungsflüssigkeit getränkt. Hierbei ist ein gebremstes Saugverhalten des Tupfers wünschenswert, damit die Flüssigkeit nicht zu schnell in die Oberfläche eindringt und dann beim Auftragen wirkungslos wird.The cotton swabs used for cosmetic purposes are usually soaked with a make-up or cleaning liquid before use. It is desirable to slow down the swab's suction behavior so that the liquid does not penetrate the surface too quickly and then become ineffective when applied.

Bei Wattebahnen mit Faseranteilen aus thermoplastischen Kunststoffen ist es bereits bekannt, die Oberflächen solcher Wattebahnen durch Anschmelzen der Kunststoffasern gegen Flusen zu verfestigen (vgl. EP o 124 834 A2). Das Anschmelzen der Kunststoffasern erfolgt dort in Kalandern mit beheizten Walzen, über die die Wattebahn geführt wird. Die Kunststoffasern werden in diskreten Abständen oder linienförmig zur Verfestigung der Oberfläche angeschmolzen. Dies wird durch eine geprägte Struktur der Walzen, durch die die Hitze nur über die erhabenen Walzenabschnitte in einem durch die Erhebungen vorgegebenen Muster auf die Wattebahn übertragen wird, bewirkt.In the case of cotton webs with fiber components made of thermoplastic plastics, it is already known to solidify the surfaces of such cotton webs against fluff by melting the plastic fibers (cf. EP o 124 834 A2). The plastic fibers are melted there in calenders with heated rollers over which the cotton web is guided. The plastic fibers are melted at discrete intervals or linearly to solidify the surface. This is caused by an embossed structure of the rollers, by means of which the heat is only transferred to the cotton web via the raised roller sections in a pattern specified by the elevations.

Diese Wattepads haben den Nachteil, dass sie nur an ihrer Oberfläche verfestigt sind, während ihr Inneres unverfestigt und daher nicht fusselfrei ist.The disadvantage of these cotton pads is that they are only solidified on their surface, while their interior is unconsolidated and is therefore not lint-free.

Denn bei Wattetupfern soll das Flusen nicht nur an der Oberfläche, sondern auch in dem Inneren des Tupfers weitestgehend vermieden werden.Because with cotton swabs, the fluff should not only be largely avoided, but also inside the swab.

Zu diesem Zweck ist in der EP 0 135 403 A1 ein Herstellungsverfahren für Wattebahnen beschrieben, bei dem die Fasern der Wattebahn durch ein spezielles "hydraulisches Verschlingen" über die gesamte Tiefe der Wattebahn derartig untereinander verschlungen werden, dass hierdurch das Flusen bei solchem Wattematerial deutlich herabgesetzt wird.For this purpose, EP 0 135 403 A1 describes a production process for cotton wool webs in which the fibers of the cotton wool web are intertwined with one another over the entire depth of the cotton wool web by means of a special "hydraulic entanglement" in such a way that the fluff in such cotton wool material is significantly reduced becomes.

Der Nachteil dieses Verfahrens besteht darin, dass es recht aufwendig ist sowohl hinsichtlich seiner Durchführung als auch der dafür benötigten Einrichtung, während das Flusen nur in einem noch nicht befriedigenden Maße verringert wird.The disadvantage of this method is that it is quite complex both in terms of its implementation and the equipment required for it, while the fluff is only reduced to an unsatisfactory extent.

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, bei einem geringstmöglichen Produktionsaufwand Wattetupfer zu schaffen, die nicht nur oberflächlich, sondern über ihre gesamte Tiefe fusselfrei und dennoch flauschig sind und ein ausreichendes Saugvermögen aufweisen.Proceeding from this, the object of the invention is to create cotton swabs which are not only superficial, but are lint-free over their entire depth and yet fluffy and have a sufficient suction capacity with the least possible production expenditure.

Gelöst wird diese Aufgabe durch einen Aufbau der Wattetupfer nach den Merkmalen des kennzeichnenden Teils des Anspruchs 1. Eine zweckmässige Ausgestaltung hierzu enthalten die Ansprüche 2 und 3.This object is achieved by constructing the cotton swabs in accordance with the features of the characterizing part of claim 1. Claims 2 and 3 contain a suitable embodiment for this.

Ein vorteilhaftes Verfahren zum drucklosen Aufschmelzen der Kunststoffaseroberflächen ist Gegenstand der Ansprüche 6 und 7.An advantageous method for the pressure-free melting of the plastic fiber surfaces is the subject of claims 6 and 7.

Das drucklose Aufschmelzen bzw. Plastifizieren der Kunststofffaseroberflächen ermöglicht die Ausbildung eines insgesamt weichen, flauschigen und ausreichend saugfähigen Wattemäterials. Durch den Anteil der Schmelzfasern entsteht die gewunschte Bremsung des Saugverhaltens.The pressure-free melting or plasticizing of the plastic fiber surfaces enables the formation of an overall soft, fluffy and sufficiently absorbent cotton material. The desired braking of the suction behavior arises from the proportion of the melt fibers.

Durch die Beimischung der Bikomponenten-Fasern wird erfindungsgemäss nur die oberflächliche Ummantelung verschmolzen, während der innere Kern in seiner Stabilität erhalten bleibt. Denn auf diese Weise erhält die Watte durch die stabil bleibenden Kerne der oberflächlich angeschmolzenen Fasern eine Art inneres, einen lockeren Aufbau garantierendes Stützgerüst.By admixing the bicomponent fibers, according to the invention, only the surface covering is fused, while the stability of the inner core is retained. In this way, the cotton is given a kind of internal support structure that guarantees a loose structure due to the stable cores of the surface-melted fibers.

In der Zeichnung ist ein Ausführungsbeispiel eines Herstellungsverfahrens für ein erfindungsgemässes Wattepad schematisch dargestellt.In the drawing, an embodiment of a manufacturing method for a cotton pad according to the invention is shown schematically.

In der insgesamt mit 1 bezeichneten Dosiervorrichtung, die aus Wiegekastenspeisern 1 a und 1 b besteht, werden getrennt Baumwoll- und/oder Viskosefasern (in 1a) sowie Schmelzfasern in der Dosiervorrichtung 1 zugeführt und zwar in dem gewünschten Mischungsverhältnis. Die Baumwollfasern weisen in der Regel eine Faserlänge von 5 bis 40 mm auf. In einer nachfolgenden Karde 2 werden die Fasern paralellisiert und zu einem Flor 7 geformt. Der Kardenflor wird in einer nachfolgenden Vlieseinrichtung 3 auf das erforderliche Endgewicht von ca. 200 g/m2 gebracht und anschliessend in einer Station 4 von Heissluft durchströmt. Die Station 4 besteht aus perforierten Trommeln, die von Heissluft gleichmässig durchsetzt werden. In dieser Heissluftstation wird die Schmelzfaser angeschmolzen, wobei ihre Oberfläche ganz oder teilweise plastifiziert ist und sich mit der benachbarten Faser verbindet. Der Heissluftstrom, der möglichst homogen durch die Trommeln geführt wird, weist eine Temperatur von ca. 120 - 150°C auf.Cotton and / or viscose fibers (in FIG. 1 a) and melt fibers are fed separately into the metering device 1 in the metering device designated overall by 1, which consists of weighing box feeders 1 a and 1 b, in the desired mixing ratio. The cotton fibers generally have a fiber length of 5 to 40 mm. In a subsequent card 2, the fibers are parallelized and formed into a pile 7. The card web is brought to the required final weight of approx. 200 g / m 2 in a subsequent fleece device 3 and hot air then flows through it in a station 4. The station 4 consists of perforated drums, which are evenly penetrated by hot air. The melt fiber is melted in this hot air station, its surface being completely or partially plasticized and combining with the neighboring fiber. The hot air flow, which is guided through the drums as homogeneously as possible, has a temperature of approx. 120 - 150 ° C.

Die in der Station 4 verfestigte Wattebahn gelangt zur Stanze 5, wo die Wattetupfer 10, vorzugsweise in Form von Rondellen, ausgestanzt werden.The cotton web solidified in the station 4 reaches the punch 5, where the cotton swabs 10, preferably in the form of rondelles, are punched out.

Claims (6)

1. An absorbent cotton pad consisting of strengthened cotton fibers and/or viscose fibers, characterized by: admixture of synthetic fusible fibers; said synthetic fusible fibers being uniformly distributed throughout the entire volume of said absorbent cotton pad; and said synthetic fusible fibers being bonded to the adjacent fibers by fusion of said synthetic fusible fibers, at least at their surface, in a pressureless manner.
2. An absorbent cotton pad as defined in Claim 1, characterized in that: said fusible fibers consist of polyethylene.
3. An absorbent cotton pad as defined in Claims 1 or 2, characterized in that: said fusible fibers are so-called bicomponent fibers having a core consisting of polypropylene (PP) and a shell consisting of polyethylene (PE).
4. An absorbent cotton pad as defined in one of the preceding Claims, characterized by: a fiber mixture consisting of cotton fibers with 2.5 to 3.5 dtex and/or viscose fibers with 1.5 to 3.5 dtex and having a fiber length of 15 to 60 mm, and a 5 to 20 % component of fusible synthetic fibers with 1.0 to 2.5 dtex and having a fiber length of 15 to 30 mm.
5. A method for the manufacture of an absorbent cotton pad as defined in one of the preceding Claims, characterized in that: fusible fibers of up to approximately 15 percent by weight are added to said cotton fibers and/or viscose fibers, in that: an absorbent cotton web is formed therefrom; and in that: said absorbent cotton web is subjected to a flow of homogeneously acting hot air before the pads are punched out.
6. A method as defined in Claim 5, characterized in that: said hot air has a temperature of approximately 120 to 150 degrees C.
EP86115130A 1985-11-27 1986-10-31 Cotton swab and process for its production Expired - Lifetime EP0227914B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115130T ATE49247T1 (en) 1985-11-27 1986-10-31 COTTON SWABS AND METHOD OF PRODUCTION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3541830 1985-11-27
DE19853541830 DE3541830A1 (en) 1985-11-27 1985-11-27 Cotton swabs and process for their manufacture

Publications (2)

Publication Number Publication Date
EP0227914A1 EP0227914A1 (en) 1987-07-08
EP0227914B1 true EP0227914B1 (en) 1990-01-03

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EP86115130A Expired - Lifetime EP0227914B1 (en) 1985-11-27 1986-10-31 Cotton swab and process for its production

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EP (1) EP0227914B1 (en)
AT (1) ATE49247T1 (en)
DE (2) DE3541830A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736276C1 (en) * 1987-10-27 1989-05-18 Pelz & Co Kg W Process for the production of cotton swabs and plant for the production of such cotton swabs using this process
FR2642770B1 (en) * 1989-01-19 1994-03-25 Celatose Sa METHOD FOR MANUFACTURING A NONWOVEN SHEET, NONWOVEN SHEET OBTAINED BY SAID METHOD AND APPLICATION OF SAID NONWOVEN SHEET TO SINGLE USE ABSORBENT HYGIENE PRODUCTS
US5023131A (en) * 1989-06-05 1991-06-11 E. I. Du Pont De Nemours And Company Cotton/polyester fiber blends and batts
CA2017836A1 (en) * 1989-06-05 1990-12-05 Wo Kong Kwok Cotton/polyester fiber blends and batts
GR1000831B (en) * 1989-07-21 1993-01-25 Demetrio Leone Absorbing fibrous bezoar
BR9105819A (en) * 1990-07-27 1992-08-25 Royce Ag WATER ABSORPTION BAG
AU8655991A (en) * 1990-10-18 1992-05-20 Demetrio Leone Shaping padded insets for clothing articles
DE102009007669A1 (en) * 2009-02-05 2010-08-12 Fleissner Gmbh Method and device for producing cotton wool products

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1660791A1 (en) * 1966-05-31 1972-02-17 Vepa Ag Method and device for consolidating needle felt, felt and similar products
DE1944652A1 (en) * 1969-09-03 1971-03-11 Basf Ag Process for the production of nonwovens
GB2054681B (en) * 1979-06-19 1983-04-13 Courtaulds Ltd Flexible sheet materials
US4296168A (en) * 1980-02-19 1981-10-20 Ambrose Jere B Padding sheet formed of a mixture of fibers bonded at their intersections
DE3007343A1 (en) * 1980-02-27 1981-09-10 Johann Borgers Gmbh & Co Kg, 4290 Bocholt Fibre body moulding - uses some fibres with fusible surface to give thermal bonding during press-moulding
DE3045216A1 (en) * 1980-12-01 1982-07-01 Hoechst Ag, 6000 Frankfurt METHOD FOR PRODUCING MECHANICALLY LAYED FLEECE FROM STACKED FIBERS
US4418031A (en) * 1981-04-06 1983-11-29 Van Dresser Corporation Moldable fibrous mat and method of making the same

Also Published As

Publication number Publication date
DE3541830A1 (en) 1987-06-04
DE3668019D1 (en) 1990-02-08
EP0227914A1 (en) 1987-07-08
ATE49247T1 (en) 1990-01-15

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