EP0529506B1 - Feutre pour machine à papier et son procédé de fabrication - Google Patents

Feutre pour machine à papier et son procédé de fabrication Download PDF

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Publication number
EP0529506B1
EP0529506B1 EP92114173A EP92114173A EP0529506B1 EP 0529506 B1 EP0529506 B1 EP 0529506B1 EP 92114173 A EP92114173 A EP 92114173A EP 92114173 A EP92114173 A EP 92114173A EP 0529506 B1 EP0529506 B1 EP 0529506B1
Authority
EP
European Patent Office
Prior art keywords
polyamide
fibres
paper machine
crimped
carbon atoms
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.)
Expired - Lifetime
Application number
EP92114173A
Other languages
German (de)
English (en)
Other versions
EP0529506A1 (fr
Inventor
Jürgen Dr. rer. nat.; Dipl. Chem. Spindler
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.)
Inventa AG fuer Forschung und Patentverwertung
Uhde Inventa Fischer AG
Original Assignee
EMS Inventa AG
Inventa AG fuer Forschung und Patentverwertung
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 EMS Inventa AG, Inventa AG fuer Forschung und Patentverwertung filed Critical EMS Inventa AG
Publication of EP0529506A1 publication Critical patent/EP0529506A1/fr
Application granted granted Critical
Publication of EP0529506B1 publication Critical patent/EP0529506B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F7/00—Other details of machines for making continuous webs of paper
    • D21F7/08—Felts
    • D21F7/083—Multi-layer felts

Definitions

  • the invention relates in particular to improved paper machine felts which contain at least one nonwoven needled onto a textile fabric, which consists wholly or partly of 3-dimensionally crimped synthetic fibers, as well as a method for producing the same and the use of such nonwovens for paper machine felts.
  • Such felts have improved abrasion resistance and enable the production of paper with a smooth surface.
  • Paper machine felts are usually made from a base fabric by needling crimped fibers into nonwovens. Such paper machine felts are used in the press zone of paper machines to dewater the paper web. For this purpose, they must be passed through an arrangement of press rollers together with the paper pulp. Felt and paper are exposed to very high mechanical, but also chemical and possibly thermal loads. The fibers, in particular, are very strongly deformed by the high speeds and press pressures in a short cycle.
  • fibers of this type can additionally be protected against thermal and chemical damage with stabilizers.
  • the abrasion resistance one of the most important properties of the fibers used for paper machine felts, can be determined relatively easily on single fibers by the so-called wire scrub test.
  • the conditioned fibers are loaded with a pre-tensioning weight of 0.44 cN / dtex (0.5 g / den) and hung over a precisely defined wire at a prescribed angle.
  • the fibers are then reciprocated a certain distance along the fiber axis so that they are rubbed against the wire.
  • the number of scrubbing movements on the wire (wire scrubbing tours "DST") is given, which are necessary until the fiber breaks.
  • Paper felts used in practice are mainly produced from polyamide 6 or polyamide 6.6 fibers. Other types of fibers for this purpose are also described in the literature.
  • DE-OS 17 61 531 describes paper machine felts according to the preamble of claim 1, which have a particularly compacted surface by using nonwovens made from mixtures of walkable or shrinkable yarns and fibers with different fiber thickness, (denier) crimp and polymer properties.
  • the fibers used according to the current state of the art for paper machine felts are crimped in two dimensions industrially using the stuffer box process. These hard mechanical buckling stress, however, leads to damage to the fiber structure, which manifests itself in significantly deteriorated mechanical properties, in particular the abrasion resistance compared to the uncrimped but unusable fibers.
  • the object on which the present invention is based arises from the still inadequate service life of paper machine felts in industrial use due to the still inadequate abrasion resistance. Furthermore, a method for producing such felts is to be specified.
  • paper machine felts made of nonwoven fabrics made of 3-dimensionally crimped synthetic fibers according to the characterizing features of claim 1 or a method for producing the paper machine felts according to the characterizing features of claim 10 and the use of the fiber nonwovens are proposed.
  • the 3-dimensionally crimped synthetic fibers have a far better abrasion resistance than two-dimensionally crimped fibers from the same starting material.
  • the crimp is necessary for the processing of the fibers into nonwovens and gives the felt an advantageous volume for water transport.
  • All or part of the paper machine felts according to the invention are produced in a manner known per se by needling 3-dimensionally crimped synthetic fibers according to the method according to the invention.
  • the invention is not limited to fibers of a specific polymer type or a specific polymer combination, but it can advantageously influence the fiber properties of each polymer type that is to be used for paper machine clothing.
  • 3-dimensional crimped synthetic fibers made of polyamides are preferred.
  • PA 6, PA 11, PA 12, PA 4 6, PA 6 6, PA 6 10, PA 6 12, PA 10 T, PA 12 T, PA 12 12 or copolyamides made of aliphatic monomers with 4 to 12 C atoms and / or aromatic monomers having 6 to 12 carbon atoms are particularly preferred.
  • Preferred monomers for such copolyamides are caprolactam, laurolactam, terephthalic acid and linear ⁇ , ⁇ -diamines having 4 to 12 carbon atoms.
  • the 3-dimensionally crimped synthetic fibers according to the invention can be used excellently for the production of needled nonwovens which can be used as paper machine felts, since these have a significantly improved abrasion resistance compared to the prior art.
  • Air jet textured fibers were produced with a suitable spinning device using dried PA 6 granulate which was rolled with 0.7% Irganox 1098.
  • the granules were melted in an extruder and then spun.
  • the spinneret had 48 holes with a diameter of 0.6 mm.
  • the total throughput was 154 g / min. at a spinning speed of 600 m / min. After leaving the spinneret, the bundle of threads was cooled by blowing with air, then prepared and then wound up.
  • the spinning material was drawn on an Air Jet texturing machine J 0/10 from Rieter, textured and then wound up at speeds of 1670 m / min.
  • the filaments were then unwound, fixed without tension at 165 ° C. and cut.
  • the fibers have an abrasion resistance that is at least 100% higher (DST values) as stuffer box crimped fibers made of a corresponding polymer.
  • a fleece with a basis weight of 500 g / m2 was produced from the fibers and was needled onto a base fabric.
  • Such test felts showed an at least 30% longer lifespan compared to corresponding felts which were produced with fibers crimped in the stuffer box (comparative example 1) when subjected to a test based on the conditions in the paper machine.
  • Fibers were produced and processed into felts analogously to Example 1, but the fibers were spun drawn. These fibers also have very good abrasion resistance (DST values). The service life of the felts was approximately 30% higher than that of the fibers crimped in the stuffer box described in Comparative Example 1.
  • Example 2 Analogously to Example 1, fibers were made from PA 12 and processed into felts. The abrasion resistance and the felt life were significantly better than with the corresponding stuffer box crimped comparison fibers (comparative example 2).
  • the total throughput was 550 g / min. at a spinning speed of 770 m / min.
  • the bundle of threads was cooled by blowing with air, then prepared and then placed in cans with a reel.
  • the spinning material was drawn, finished, dried and cut using a conventional stretching line at godet temperatures of 60 to 65 ° C.
  • the properties of the fibers are listed in Table 1.
  • the fibers have at least 100% higher abrasion resistance (DST values) than crimped fibers made from a corresponding polymer.
  • a fleece with a basis weight of 500 g / m2 was produced from the fibers and was needled onto a base fabric.
  • Such test felts showed an at least 30% longer lifespan compared to corresponding felts (comparative example 1) which were produced with fibers crimped in the stuffer box when they were subjected to a test based on the conditions in the paper machine.
  • fibers were made from PA 12 granules of different viscosity (eta rel 2.0 and 2.2 measured in m-cresol, 25 ° C., 0.5 g / 100 ml) and processed into felts. These fibers also have very good abrasion resistance (DST values). The lifespan of the felts was 25% longer than that of the Comparative fibers described under 2.
  • fibers were produced from PA 6 granules (eta rel. 3.4) and PA 66 granules (eta rel. 3.4) and processed into felts.
  • Table 1 clearly shows that 3-dimensional crimped synthetic fibers are significantly more abrasion-resistant compared to corresponding two-dimensional crimped fibers.
  • PA 6 6 only has about 60 to 70% of the abrasion resistance of PA 6.

Landscapes

  • Paper (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Multicomponent Fibers (AREA)
  • Printing Plates And Materials Therefor (AREA)

Claims (21)

  1. Feutre pour machine à papier, constitué
    - d'un tissu de support et
    - d'au moins une couche d'un mat de fibres de polymère thermoplastique filées à l'état fondu, qui est aiguilleté sur le tissu de support,
    caractérisé en ce que le mat de fibres est constitué, en totalité ou en partie, de fibres à frisure tridimensionnelle.
  2. Feutre pour machine à papier, conforme à la revendication 1, caractérisé en ce que les fibres à frisure tridimensionnelle sont des fibres à deux composants.
  3. Feutre pour machine à papier, conforme à la revendication 1, caractérisé en ce que les fibres à frisure tridimensionnelle sont des fibres de polymère asymétriquement refroidies.
  4. Feutre pour machine à papier, conforme à la revendication 1, caractérisé en ce que les fibres à frisure tridimensionnelle ont été frisées selon le procédé "Air Jet".
  5. Feutre pour machine à papier, conforme à la revendication 1, caractérisé en ce que les fibres à frisure tridimensionnelle ont été frisées selon le procédé "Steam Jet".
  6. Feutre pour machine à papier, conforme à l'une des revendications 1 à 5, caractérisé en ce que les libres à frisure tridimensionnelle sont constituées d'au moins un composant de type polyamide.
  7. Feutre pour machine à papier, conforme à la revendication 1 ou 2, caractérisé en ce que les fibres à frisure tridimensionnelle sont constituées d'au moins deux composants de type polyamide qui possèdent des propriétés différentes.
  8. Feutre pour machine à papier, conforme à la revendication 6, caractérisé en ce que le composant de type polyamide est un polyamide choisi parmi le polyamide 6, le polyamide 11, le polyamide 12, le polyamide 4-6, le polyamide 6-6, le polyamide 6-10, le polyamide 6-12, le polyamide 10-T, le polyamide 12-T, le polyamide 12-12 et un copolyamide à base de monomères aliphatiques comportant de 4 à 12 atomes de carbone et/ou de monomères aromatiques comportant de 6 à 12 atomes de carbone.
  9. Feutre pour machine à papier, conforme à la revendication 7, caractérisé en ce qu'au moins l'un des composants de type polyamide est un polyamide choisi parmi le polyamide 6, le polyamide 11, le polyamide 12, le polyamide 4-6, le polyamide 6-6, le polyamide 6-10, le polyamide 6-12, le polyamide 10-T, le polyamide 12-T, le polyamide 12-12 et un copolyamide à base de monomères aliphatiques comportant de 4 à 12 atomes de carbone et/ou de monomères aromatiques comportant de 6 à 12 atomes de carbone.
  10. Feutre pour machine à papier, conforme à l'une des revendications 8 et 9, dans lequel le copolyamide est constitué de monomères choisis parmi le caprolactame, le laurolactame, l'acide téréphtalique et les α,ω-diamines à chaîne linéaire comportant de 4 à 12 atomes de carbone.
  11. Procédé de fabrication d'un feutre aiguilleté pour machine à papier, constitué, de façon connue, d'un tissu de support et d'au moins une couche d'un mat de fibres de polymère thermoplastique filées à l'état fondu, qui est aiguilleté sur le tissu de support, caractérisé en ce que l'on fabrique le feutre, en totalité ou en partie, par aiguilletage de fibres à frisure tridimensionnelle.
  12. Procédé conforme à la revendication 11, caractérisé en ce qu'on utilise, en tant que libres à frisure tridimensionnelle, des fibres à deux composants.
  13. Procédé conforme à la revendication 11, caractérisé en ce qu'on utilise, en tant que fibres à frisure tridimensionnelle, des fibres de polymère asymétriquement refroidies.
  14. Procédé conforme à la revendication 11, caractérisé en ce qu'on utilise, en tant que fibres à frisure tridimensionnelle, des fibres qui ont été frisées selon le procédé "Air Jet".
  15. Procédé conforme à la revendication 11, caractérisé en ce qu'on utilise, en tant que libres à frisure tridimensionnelle, des fibres qui ont été frisées selon le procédé "Steam Jet".
  16. Procédé conforme à l'une des revendications 11 à 15, caractérisé en ce que les fibres à frisure tridimensionnelle sont constituées d'un composant de type polyamide.
  17. Procédé conforme à l'une des revendications 11 à 15, caractérisé en ce que les fibres à frisure tridimensionnelle sont constituées de plusieurs composants de type polyamide qui possèdent des propriétés différentes.
  18. Procédé conforme à la revendication 16, caractérisé en ce que le composant de type polyamide est un polyamide choisi parmi le polyamide 6, le polyamide 11, le polyamide 12, le polyamide 4-6, le polyamide 6-6, le polyamide 6-10, le polyamide 6-12, le polyamide 10-T, le polyamide 12-T, le polyamide 12-12 et un copolyamide à base de monomères aliphatiques comportant de 4 à 12 atomes de carbone et/ou de monomères aromatiques comportant de 6 à 12 atomes de carbone.
  19. Procédé conforme à la revendication 17, caractérisé en ce qu'au moins l'un des composants de type polyamide est un polyamide choisi parmi le polyamide 6, le polyamide 11, le polyamide 12, le polyamide 4-6, le polyamide 6-6, le polyamide 6-10, le polyamide 6-12, le polyamide 10-T, le polyamide 12-T, le polyamide 12-12 et un copolyamide à base de monomères aliphatiques comportant de 4 à 12 atomes de carbone et/ou de monomères aromatiques comportant de 6 à 12 atomes de carbone.
  20. Procédé conforme à l'une des revendications 18 et 19, caractérisé en ce que le copolyamide est constitué de monomères choisis parmi le caprolactame, le laurolactame, l'acide téréphtalique et les α,ω-diamines à chaîne linéaire comportant de 4 à 12 atomes de carbone.
  21. Utitisation de mats de fibres constitués, au moins en partie, de fibres de polymère thermoplastique, filées à l'état fondu et à frisure tridimensionnelle, choisies parmi les fibres à deux composants, les fibres asymétriquement refroidies, les fibres frisées selon le procédé "Air Jet" et les fibres frisées selon le procédé "Steam Jet", pour la fabrication de feutres pour machine à papier.
EP92114173A 1991-08-23 1992-08-20 Feutre pour machine à papier et son procédé de fabrication Expired - Lifetime EP0529506B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4127948 1991-08-23
DE4127948 1991-08-23
DE4226592 1992-08-11
DE4226592A DE4226592A1 (de) 1991-08-23 1992-08-11 Papiermaschinenfilze und verfahren zur herstellung derselben

Publications (2)

Publication Number Publication Date
EP0529506A1 EP0529506A1 (fr) 1993-03-03
EP0529506B1 true EP0529506B1 (fr) 1995-11-22

Family

ID=25906635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92114173A Expired - Lifetime EP0529506B1 (fr) 1991-08-23 1992-08-20 Feutre pour machine à papier et son procédé de fabrication

Country Status (10)

Country Link
EP (1) EP0529506B1 (fr)
JP (1) JPH05214694A (fr)
AT (1) ATE130644T1 (fr)
AU (1) AU656792B2 (fr)
BR (1) BR9203280A (fr)
CA (1) CA2076726C (fr)
DE (2) DE4226592A1 (fr)
ES (1) ES2038963T3 (fr)
FI (1) FI96228C (fr)
MX (1) MX9204839A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803493C1 (de) * 1998-01-29 1999-04-29 Inventa Ag Papiermaschinenfilz
US6207276B1 (en) 1998-11-26 2001-03-27 Ems-Chemie Ag Sheath-core bicomponent fiber and its applications
EP1090174A1 (fr) 1998-06-11 2001-04-11 Rhodia Performance Fibres Utilisation de fibres a frisure tridimensionnelle pour la fabrication de tissu ou toile de renfort, et tissu de renfort obtenu

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5236652A (en) † 1992-02-11 1993-08-17 E. I. Du Pont De Nemours And Company Process for making polyamide fiber useful as staple for papermaking machine felt
ATE166400T1 (de) * 1993-12-16 1998-06-15 Inventa Ag Papiermaschinenfilz
DE4404507A1 (de) * 1994-02-12 1995-08-17 F & W Tech Faeden Gmbh Pressenfilz für die Papierindustrie
GB9407462D0 (en) * 1994-04-15 1994-06-08 Scapa Group Plc Papermachine clothing
US5549967A (en) 1995-05-04 1996-08-27 Huyck Licensco, Inc. Papermakers' press fabric with increased contact area
GB9622302D0 (en) 1996-10-26 1996-12-18 Scapa Group Plc Expandable pintle wires
DE19731019A1 (de) * 1997-07-18 1999-01-21 Voith Sulzer Papiermasch Gmbh Pressband
DE19915891A1 (de) * 1999-04-08 2000-10-12 Huyck Austria Transferband
AT410682B (de) * 1999-09-01 2003-06-25 Huyck Austria Textilmaschinenfilz
DE10144307A1 (de) * 2001-09-10 2003-03-27 Bayer Faser Gmbh Trägergewebe für Papiermaschinenbespannungen
JP4454408B2 (ja) * 2004-06-25 2010-04-21 イチカワ株式会社 抄紙用フェルト
DE102014203143A1 (de) * 2014-02-21 2015-04-09 Voith Patent Gmbh Bespannung, insbesondere Pressfilz, und Verfahren zur Herstellung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US787900A (en) * 1902-01-14 1905-04-25 Western Electric Co Plug and spring-jack switch.
NL189176B (nl) * 1956-07-13 1900-01-01 Hisamitsu Pharmaceutical Co Pleister op basis van een synthetische rubber.
US3063127A (en) * 1959-08-13 1962-11-13 Hindle Thomas Woven fabric useful as a paper-machine felt and method of making the same
DE1635472A1 (de) * 1966-05-27 1972-02-24 Breveteam Sa Verfahren zur Herstellung eines aus wenigstens einer Oberschicht und einer Grundschicht bestehenden textilen Flaechengebildes durch Vernadelung der Schichten sowie nach dem Verfahren hergestelltes textiles Flaechengebilde
US4521484A (en) * 1984-06-07 1985-06-04 E. I. Du Pont De Nemours And Company Self-crimping polyamide filaments
GB9018987D0 (en) * 1990-08-31 1990-10-17 Albany Research Uk Peek hot press felts and fabrics

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803493C1 (de) * 1998-01-29 1999-04-29 Inventa Ag Papiermaschinenfilz
EP1090174A1 (fr) 1998-06-11 2001-04-11 Rhodia Performance Fibres Utilisation de fibres a frisure tridimensionnelle pour la fabrication de tissu ou toile de renfort, et tissu de renfort obtenu
US6207276B1 (en) 1998-11-26 2001-03-27 Ems-Chemie Ag Sheath-core bicomponent fiber and its applications

Also Published As

Publication number Publication date
FI96228C (fi) 1996-05-27
FI96228B (fi) 1996-02-15
JPH05214694A (ja) 1993-08-24
DE4226592A1 (de) 1993-03-04
MX9204839A (es) 1993-04-30
AU2119992A (en) 1993-02-25
ES2038963T3 (es) 1996-01-16
ATE130644T1 (de) 1995-12-15
DE59204415D1 (de) 1996-01-04
EP0529506A1 (fr) 1993-03-03
CA2076726C (fr) 1996-05-21
BR9203280A (pt) 1993-03-30
FI923768A0 (fi) 1992-08-21
AU656792B2 (en) 1995-02-16
FI923768A (fi) 1993-02-24
CA2076726A1 (fr) 1993-02-24
ES2038963T1 (es) 1993-08-16

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