EP0399301A2 - Feutre pour machine à papier - Google Patents

Feutre pour machine à papier Download PDF

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Publication number
EP0399301A2
EP0399301A2 EP90108806A EP90108806A EP0399301A2 EP 0399301 A2 EP0399301 A2 EP 0399301A2 EP 90108806 A EP90108806 A EP 90108806A EP 90108806 A EP90108806 A EP 90108806A EP 0399301 A2 EP0399301 A2 EP 0399301A2
Authority
EP
European Patent Office
Prior art keywords
felt
threads
fabric
screen
fabrics
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.)
Granted
Application number
EP90108806A
Other languages
German (de)
English (en)
Other versions
EP0399301A3 (fr
EP0399301B1 (fr
Inventor
Hans Dipl.-Ing. Marx
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.)
Jj Marx GmbH
Original Assignee
Jj Marx GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6380740&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0399301(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Jj Marx GmbH filed Critical Jj Marx GmbH
Publication of EP0399301A2 publication Critical patent/EP0399301A2/fr
Publication of EP0399301A3 publication Critical patent/EP0399301A3/fr
Application granted granted Critical
Publication of EP0399301B1 publication Critical patent/EP0399301B1/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 to a felt cloth for paper machines, in particular a wet felt for the press section made of at least one screen fabric and at least one nonwoven layer needled therewith.
  • felt cloths are required in paper machines in the press section and in the dryer section, which are used to transport the paper web and in particular in the press section to receive and discharge the squeezed water.
  • the felt fabrics used here can be formed from a screen fabric onto which several layers of nonwoven fabric are needled.
  • the disadvantage of these felt towels is that they get dirty relatively quickly, thereby compacting and, finally, can hardly remove water from the paper stock. This applies especially to the wet end of the press section.
  • a felt washing device is often arranged on the press section and the wet felt is then washed continuously or discontinuously during its use in order to keep it open as long as possible and thus functional.
  • the felt cloth is formed from a plurality of independent screen fabrics, at least one of the fabrics being needled with a nonwoven layer.
  • the felt cloth consists of several base fabrics, which can move relative to each other, which consequently loosens the needled fibers of the nonwoven fabric, as a result of which the dirt adhering to the fibers is more easily removed from the felt cloth.
  • Felted fabrics with this structure are often used with great success.
  • the object of the present invention is to further develop the known felt cloths and to achieve an even better drainage performance.
  • the compacting of the felt is to be reduced and a longer openness through less dirt accumulation and thus a longer service life of the felt is sought.
  • the object is achieved in a felt cloth of the type mentioned in the invention in that an insert formed from longitudinal threads is inserted between the screen fabric and the nonwoven layer and / or the screen fabrics.
  • This insert without transverse threads leads to the formation of channels in the interior of the felt, which ensure improved water flow in and through the felt. This results in the improved drainage performance and longer service life of the felts.
  • Another advantage arises from the fact that the long thread layer prevents the upper fabric from being able to press into the openings of the lower fabric with its offset points. It should be noted that with the same or a similar weave of the screen fabric, this indentation of the cranks in the openings of the adjacent fabric is possible in the course of the pressing during the life of the felt, with the result that the felt is compressed.
  • the new felt cloth compared to the prior art, also has a greater flexibility in the transverse direction, which facilitates the installation of the felt in the paper machine. At the same time, the felt showed excellent dimensional stability.
  • the longitudinal threads can be formed from monofilaments.
  • monofilament thread is also possible.
  • highly elastic threads such as rubber threads.
  • the thickness of the long threads is preferably selected so that it is approximately 1.3 times the thickness of the sieve fabric threads.
  • the basic idea of the present invention namely the insertion of an insert between Vies and sieve fabric or two sieve fabrics, can be used in different combinations with felt cloths.
  • a three-layer screen fabric only a single insert can be used, but it is also possible to use two inlays, one of which is inserted between two screen fabrics.
  • Other combinations in, for example, five-layer screen fabrics are also conceivable in order to achieve the effect of the invention.
  • the combination of a fleece, an insert and a sieve fabric or a fleece, two inserts and a sieve fabric is also conceivable.
  • the felt cloth shown in detail in the figure consists of two superimposed screen fabrics 2 and 3 and the nonwoven layer 4.
  • the two screen fabrics 2 and 3 are formed in the usual way from the longitudinal threads 6 and 7 and the transverse threads 8 and 9 or 10 and 11. Both screen fabrics are independent of each other, i. H. neither connected by cross threads nor long threads.
  • the fleece layer 4 is formed from the fibers 22 and is located on the paper side of the felt cloth 1.
  • the fleece layer 4 is needled onto the two screen fabrics 2 and 3 in the known needle method.
  • the fibers 12 running from top to bottom between the longitudinal threads 6 and 7 are intended to represent the needled fibers of the fleece 4.
  • the insert consists of adjacent longitudinal threads, which are inserted between the screen fabrics 2 and 3.
  • the longitudinal threads of the insert are monofilaments 14 and monofilament twine 13.
  • the insert has no transverse threads.
  • the monofilament thread 13 is formed from three, five or more filaments. The use of monofilament thread gives a higher elastic effect.

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  • Paper (AREA)
EP90108806A 1989-05-16 1990-05-10 Feutre pour machine à papier Expired - Lifetime EP0399301B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3915909 1989-05-16
DE3915909A DE3915909A1 (de) 1989-05-16 1989-05-16 Filztuch fuer papiermaschinen

Publications (3)

Publication Number Publication Date
EP0399301A2 true EP0399301A2 (fr) 1990-11-28
EP0399301A3 EP0399301A3 (fr) 1991-02-27
EP0399301B1 EP0399301B1 (fr) 1994-11-30

Family

ID=6380740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90108806A Expired - Lifetime EP0399301B1 (fr) 1989-05-16 1990-05-10 Feutre pour machine à papier

Country Status (4)

Country Link
EP (1) EP0399301B1 (fr)
AT (1) ATE114752T1 (fr)
DE (2) DE3915909A1 (fr)
ES (1) ES2064522T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287257A (en) * 1994-03-10 1995-09-13 Scapa Group Plc Papermakers marking felt

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4040861C3 (de) * 1990-12-20 2001-02-01 Conrad Munzinger & Cie Ag Olte Preßfilz sowie Verfahren zu dessen Herstellung
DE19731019A1 (de) * 1997-07-18 1999-01-21 Voith Sulzer Papiermasch Gmbh Pressband

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564985A (en) * 1981-10-08 1986-01-21 Nippon Felt Co., Ltd. Felt for paper manufacture and method for producing the same
EP0307183A1 (fr) * 1987-09-09 1989-03-15 ASTEN GROUP INC. (a Delaware corporation) Feutre de presse humide et son procédé de fabrication

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4564985A (en) * 1981-10-08 1986-01-21 Nippon Felt Co., Ltd. Felt for paper manufacture and method for producing the same
EP0307183A1 (fr) * 1987-09-09 1989-03-15 ASTEN GROUP INC. (a Delaware corporation) Feutre de presse humide et son procédé de fabrication

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2287257A (en) * 1994-03-10 1995-09-13 Scapa Group Plc Papermakers marking felt

Also Published As

Publication number Publication date
EP0399301A3 (fr) 1991-02-27
ES2064522T3 (es) 1995-02-01
EP0399301B1 (fr) 1994-11-30
ATE114752T1 (de) 1994-12-15
DE3915909A1 (de) 1990-11-22
DE59007803D1 (de) 1995-01-12

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