EP0133836B1 - Verfahren zum Aufkleben einer durchlässigen Schicht auf einen Träger aus Zusammengebundenen Fasern sowie die so hergestellten Filze für Papiermaschinen und Filtergewebe - Google Patents

Verfahren zum Aufkleben einer durchlässigen Schicht auf einen Träger aus Zusammengebundenen Fasern sowie die so hergestellten Filze für Papiermaschinen und Filtergewebe Download PDF

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Publication number
EP0133836B1
EP0133836B1 EP84401659A EP84401659A EP0133836B1 EP 0133836 B1 EP0133836 B1 EP 0133836B1 EP 84401659 A EP84401659 A EP 84401659A EP 84401659 A EP84401659 A EP 84401659A EP 0133836 B1 EP0133836 B1 EP 0133836B1
Authority
EP
European Patent Office
Prior art keywords
layer
yarns
special
face
felt
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
Application number
EP84401659A
Other languages
English (en)
French (fr)
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EP0133836A1 (de
Inventor
Maurice Gauthier
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.)
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Original Assignee
COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
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.)
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Publication date
Application filed by COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA filed Critical COFPA Compagnie des Feutres pour Papeteries et des Tissus Industriels SA
Priority to AT84401659T priority Critical patent/ATE30345T1/de
Publication of EP0133836A1 publication Critical patent/EP0133836A1/de
Application granted granted Critical
Publication of EP0133836B1 publication Critical patent/EP0133836B1/de
Expired 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 present invention relates to a method of bonding by fusion of a layer of per- material. wearable on a support made up of wires linked together, said support comprising a thermoplastic component whose melting temperature is lower than that of the other components.
  • the support comprises special thermoplastic wires which are heated so as to melt them before the permeable layer is applied to them.
  • This process has the disadvantage of partially destroying the texture of the support since certain special yarns are completely melted.
  • the bonding has imperfections because the thermosplastic molten material when the wire is completely melted spreads irregularly between the remaining wires of the support and the layer of permeable material.
  • the process according to the invention which does not have these drawbacks is characterized in that, during the manufacture of the support, special wires are provided on one face having a core and an external part made of thermoplastic, the melting temperature of which is lower than that of the core and those of the other wires and in that the said face is heated until the external part of the said special wires is melted, then the layer of permeable material is applied to this face.
  • the present invention is particularly advantageous for the manufacture of felts for stationery in which the permeable layer makes it possible inter alia to remove the marking of the sheet of paper under the effect of pressure and to transport the water extracted from the sheet of paper that we manufacture.
  • Stationery felts are usually manufactured by fastening by needling the layer of permeable material consisting of fibers bonded together on a support of woven threads (even if an additional bonding between support and permeable layer is carried out as described in document DT-A 1,807,329.
  • the felt thus formed has several defects. First of all, its permeability has decreased since fibers have been introduced into the support.
  • the layer of permeable material is compacted and provided with numerous small funnels at the places where the needles have penetrated.
  • junction means loops
  • the felt forms an endless band
  • the desired support can be chosen by using, for example, threads resistant to chemical degradation and even if their tenacity is fairly low, there is no longer any risk of it being reduced by needling below a prohibitive value.
  • weft threads will preferably constitute the weft threads of the heated face, said threads then being perpendicular to the direction of unwinding of the felt.
  • the method according to the invention is also very advantageous for the manufacture of filter fabrics in which the permeable layer is used to filter a liquid or a gas and to retain impurities especially when the support which gives the mechanical characteristics is provided with joining means.
  • Figures 1 and 2 show a support and a layer used in the method according to the invention.
  • FIG. 3 schematically represents a device for implementing the method according to the invention.
  • the woven support 20 has warp threads 1 ', 2', 3 ', 4', 5 ', 6', 7 ', 8' of period eight, and weft threads 1, 2, ⁇ 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ... (see Figure 1). ⁇
  • weft threads 1, 3, 4, 6, 7, 9, 10, 12 are in relief as seen in section II-II ( Figure 2).
  • the weft threads 1, 3, 4, 6, 7, 9, 10, 12 in relief are special two-component monofilament threads. They have a polyester core 24 surrounded by a polyamide 6 sheath 25.
  • the other warp threads 1 ′, 2 ′, 3 ′, 4 ′, 5 ′, 6 ′, 7 ′, 8 ′ and weft 2, 5, 8, 11 are made of polyester.
  • the melting point of polyester is 230 ° C and that of polyamide 6 is 180 ° C.
  • the support can be made by weaving, knitting, assembling spirals etc ...
  • the special two-component yarns comprise a core composed of a monofilament or of several filaments or even of threads of cut fibers and an external part surrounding the core which may be a sheath or threads surrounding the core having a lower melting point to that of the core and of the other wires constituting the support.
  • the permeable material layer is chosen according to the desired characteristics of the final product.
  • This layer 26 may consist of continuous or discontinuous fibers linked together by needling, by fusion, by impregnation with resin, etc.
  • the support 20 can be terminated at each end by joining means 23 (loops, spirals, etc.).
  • the device making it possible to implement the invention comprises heating elements, for example infrared 30, two rollers 31, 32 of which the first has its fixed axis and the second of which is applied against the first, a heated cylinder 33 and return rollers 34, 35 and a tensioner 36.
  • heating elements for example infrared 30, two rollers 31, 32 of which the first has its fixed axis and the second of which is applied against the first, a heated cylinder 33 and return rollers 34, 35 and a tensioner 36.
  • the permeable layer 26 is wound on a cylinder 37.
  • the support is mounted on the rollers 34, 35, and on the tensioner 36 it passes between the rollers 31, 32 and around the cylinder 31.
  • the cylinder 31 is driven.
  • the face 21 with the special wires of the support passes under the heating elements 30 which heats it to a temperature which melts the external part of the special wires (for example 200 ° C.).
  • the permeable layer 26 is applied by the roller 32 to the face 21 with the molten wires.
  • the layer 26 adheres to the support 21 and the layer 26 and support 20 assembly is wound around the cylinder 33 (layer 26 against the cylinder 33) which is heated to low temperature (120 ° C.) to improve the surface finish.

Claims (9)

1. Verfahren zum Aufkleben einer Schicht durchlässigen Materials (26) durch Verschmelzen auf einen aus miteinander verbundenen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) bestehenden Träger (20), der ein thermoplastisches Bestandteil aufweist, dessen Schmelztemperatur unter der der anderen Bestandteile liegt, dadurch gekennzeichnet, daß man bei der Herstellung des Trägers (20) auf einer Seite (21) spezielle Fäden (1, 3, 4, 6, 7, 9, 10, 12) mit einer Seele (24) und einem äußeren Teil (25) aus thermoplastischem Material vorsieht, dessen Schmelztemperatur unter der der Seele (25) und der der anderen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 2, 5, 8, 11) liegt, und daß diese Seite (21) soweit erhitzt wird, daß der äußere Teil (25) der speziellen Fäden (1, 3, 4, 6, 7, 9, 10, 12) schmilzt, worauf die Schicht (26) auf diese Trägerseite (21) aufgebracht wird.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die speziellen Fäden (1, 3, 4, 6, 7, 9, 10, 12) eine Seele (24) aus Polyester und einen äußeren Teil (25) in Form einer Polyamidhülle (6) besitzen, daß die anderen Fäden (1', 2', 3', 4', 5', 6', T. 8', 2. 5, 8, 11 ) aus Polyester sind und daß die die speziellen Fäden (1, 2, 3, 4, 6, 9, 10, 12) aufweisende Seite (21) auf eine Temperatur nahe 200 °C vor dem Aufbringen der Schicht (26) erhitzt wird.
3. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekenzeichnet, daß der Träger (20) mit Schleifen oder Spiralen versehen ist, die als Mittel zur Verbindung (23) vor der Befestigung der Schicht (26) dienen.
4. Filz für eine Papiermaschine mit einem aus miteinander verbundenen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) bestehenden Träger (20), wobei auf dem Filz eine Schicht aus durchlässigem Material (26) befestigt ist, dadurch gekennzeichnet, daß der Träger auf der Seite (21), die mit der Schicht (26) verbunden ist, spezielle Fäden (1, 3, 4, 6, 7, 9, 10, 12) mit einer Seele (24) und einem äußeren Teil (25) besitzt, wobei die Schicht (26) auf die Seite (21) über die äußeren Teile der speziellen Fäden aufgeklebt ist.
5. Filz nach Anspruch 4, dadurch gekennzeichnet, daß die speziellen Fäden (1, 3, 4, 6, 7, 9, 10, 12) eine Seele (24) aus Polyester und einen äußeren Teil aus Polyamid besitzen und daß die anderen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 2, 5, 8, 11) aus Polyester sind.
6. Filz nach einem. der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß 'die speziellen Fäden in Schußrichtung der Seite (21) senkrecht zur Bewegungsrichtung des Filzes angeordnet sind.
7. Filz nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die speziellen Fäden in Kettrichtung des Trägers (20) und in Bewegungsrichtung des Filzes angeordnet sind.
8. Filtergewebe mit einem Träger (20), der aus miteinander verbundenen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12) besteht. auf dem eine Schicht aus durchlässigem Material (26) befestigt ist, dadurch gekennzeichnet. daß der Träger auf der mit der Schicht (26) verbundenen Seite (21) spezielle Fäden (1, 3, 4, 6, 7, 9, 10, 12) mit einer Seele (24) und einem äußeren Teil (25) besitzt, wobei die Schicht (26) auf die Seite (21) über die äußeren Teile der speziellen Fäden aufgeklebt ist.
9. Filtergewebe nach Anspruch 8, dadurch gekennzeichnet, daß die speziellen Fäden (1, 3, 4, 6, 7, 9, 10, 12) eine Seele (24) aus Polyester und einen äußeren Teil aus Polyamid besitzen und daß die anderen Fäden (1', 2', 3', 4', 5', 6', 7', 8', 2, 5, 8, 11) aus Polyester sind.
EP84401659A 1983-08-11 1984-08-10 Verfahren zum Aufkleben einer durchlässigen Schicht auf einen Träger aus Zusammengebundenen Fasern sowie die so hergestellten Filze für Papiermaschinen und Filtergewebe Expired EP0133836B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84401659T ATE30345T1 (de) 1983-08-11 1984-08-10 Verfahren zum aufkleben einer durchlaessigen schicht auf einen traeger aus zusammengebundenen fasern sowie die so hergestellten filze fuer papiermaschinen und filtergewebe.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8313213 1983-08-11
FR8313213 1983-08-11

Publications (2)

Publication Number Publication Date
EP0133836A1 EP0133836A1 (de) 1985-03-06
EP0133836B1 true EP0133836B1 (de) 1987-10-21

Family

ID=9291574

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84401659A Expired EP0133836B1 (de) 1983-08-11 1984-08-10 Verfahren zum Aufkleben einer durchlässigen Schicht auf einen Träger aus Zusammengebundenen Fasern sowie die so hergestellten Filze für Papiermaschinen und Filtergewebe

Country Status (8)

Country Link
EP (1) EP0133836B1 (de)
JP (1) JPS60502012A (de)
AT (1) ATE30345T1 (de)
AU (1) AU569912B2 (de)
CA (1) CA1251124A (de)
DE (1) DE3466902D1 (de)
FI (1) FI86657C (de)
WO (1) WO1985000840A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239207A3 (de) * 1986-03-26 1989-11-08 ASTEN GROUP INC. (a Delaware corporation) Verfahren zur Herstellung eines Papiermaschinenfilzes
US5549967A (en) * 1995-05-04 1996-08-27 Huyck Licensco, Inc. Papermakers' press fabric with increased contact area
US6030908A (en) * 1998-03-16 2000-02-29 Jwi Ltd. Multilayer porous fabric
DE19859583A1 (de) * 1998-12-22 2000-06-29 Voith Fabrics Heidenheim Gmbh Papiermaschinensieb für die Naßpartie einer Papiermaschine
CA2313867A1 (en) 1999-07-19 2001-01-19 Paul C. Fleri Polymer blends of trimethylene terephthalate and an elastomeric polyester

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB276392A (en) * 1926-04-07 1927-09-01 Respro Inc Leather substitute and process of making the same
FR1318984A (fr) * 1962-03-31 1963-02-22 Us Rubber Co Perfectionnements aux tresses de couture pour tapis
GB994914A (en) * 1962-10-11 1965-06-10 Dynamit Nobel Ag Composite plastics article
GB994917A (en) * 1962-10-26 1965-06-10 John Halliday And Sons Ltd Improvements in or relating to apparatus for detecting variations in the thickness of a moving filament, thread or the like
DE1635487A1 (de) * 1967-10-25 1971-10-28 Degussa Verbundmaterialbahnen
GB1236780A (en) * 1967-11-06 1971-06-23 Huyck Corp Improvements in papermaking apparatus
GB1349644A (en) * 1970-06-03 1974-04-10 Cpc United Kingdom Ltd Method of joining web material
JPS5930819B2 (ja) * 1976-04-08 1984-07-28 株式会社クラレ 自己接着性芯地
DE2844397A1 (de) * 1978-10-12 1980-04-30 Basf Ag Verbundschichtstoffe aus gefuellten polyolefinen und einer thermoplastischen dekorschicht sowie deren herstellung und verwendung
GB2067133A (en) * 1980-01-12 1981-07-22 British Vita Co Ltd Improvements in or relating to non-woven fabrics

Also Published As

Publication number Publication date
FI86657C (fi) 1992-09-25
FI851290A0 (fi) 1985-03-29
AU569912B2 (en) 1988-02-25
JPS60502012A (ja) 1985-11-21
EP0133836A1 (de) 1985-03-06
AU3312384A (en) 1985-03-12
JPS6344877B2 (de) 1988-09-07
ATE30345T1 (de) 1987-11-15
CA1251124A (en) 1989-03-14
DE3466902D1 (en) 1987-11-26
WO1985000840A1 (fr) 1985-02-28
FI86657B (fi) 1992-06-15
FI851290L (fi) 1985-03-29

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