EP0126943A2 - Toile de formation à plusieurs couches pour la partie humide d'une machine à papier - Google Patents

Toile de formation à plusieurs couches pour la partie humide d'une machine à papier Download PDF

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Publication number
EP0126943A2
EP0126943A2 EP84104291A EP84104291A EP0126943A2 EP 0126943 A2 EP0126943 A2 EP 0126943A2 EP 84104291 A EP84104291 A EP 84104291A EP 84104291 A EP84104291 A EP 84104291A EP 0126943 A2 EP0126943 A2 EP 0126943A2
Authority
EP
European Patent Office
Prior art keywords
fabric
paper machine
wet end
weft
layer
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
EP84104291A
Other languages
German (de)
English (en)
Other versions
EP0126943A3 (en
EP0126943B1 (fr
Inventor
Bernhard Dr. Krenkel
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.)
F. OBERDORFER GMBH & CO. KG INDUSTRIEGEWEBE-TECHNI
Original Assignee
F Oberdorfer & Co KG Industriegewebe-Technik 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=6199841&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0126943(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by F Oberdorfer & Co KG Industriegewebe-Technik GmbH filed Critical F Oberdorfer & Co KG Industriegewebe-Technik GmbH
Priority to AT84104291T priority Critical patent/ATE35705T1/de
Publication of EP0126943A2 publication Critical patent/EP0126943A2/fr
Publication of EP0126943A3 publication Critical patent/EP0126943A3/de
Application granted granted Critical
Publication of EP0126943B1 publication Critical patent/EP0126943B1/fr
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
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0027—Screen-cloths
    • D21F1/0036—Multi-layer screen-cloths

Definitions

  • the invention relates to a two-layer forming fabric consisting of upper fabric and lower fabric for the wet party of a paper machine.
  • Papermaker's fabrics of this type always have a single-layer bottom fabric as wear fabric, which in practice is usually woven in a single weave or in cross-twill weave. Such a wear fabric cannot be made arbitrarily rough, because otherwise its structure will appear on the forming side of the upper fabric and thus lead to markings in the paper. However, this limits the stability of such screens and their service life.
  • the invention has for its object a screen of the type mentioned, the sheet formation side consists of a simple, non-marking fabric made of fine yarn, while the fabric on the running side be wear-resistant and of high longitudinal and transverse stability and for the purpose of coarse threads should exist so that the coarse sub-fabric does not appear on the sheet formation side. Furthermore, drainage impulses in the tissue are to be strongly dampened.
  • the warp density of the lower fabric is greater than 8.
  • the warp density is calculated from the diameter of the warp thread and the number of warp threads per centimeter, multiplied by a factor of 10.
  • a particularly preferred embodiment of the forming fabric according to the invention is obtained when the lower fabric is woven in a multi-layer weave, with which an exceptionally high longitudinal and transverse stability, as has hitherto only been achieved by metal fabrics, is obtained.
  • the high warp density of more than 8 of the wear fabric also leads to very high retention values with sufficient drainage performance, and the high volume of the wear fabric offers the further advantage that the drainage impulses are strongly damped and paper of the same high quality can be produced as before was not possible.
  • a 1 x 1 weave upper fabric 10 made of relatively fine warp threads 11 and weft threads 12 is connected to a lower fabric 20 which is woven in two layers, its warp thread 21 with a strong, wear-bearing lower weft thread 22 and one in the top layer of the Underlying 20 lying, thinner weft 23 is woven.
  • the binding of the two-ply lower fabric 20 is selected so that the paper machine screen is designed as a weft runner and has a very stable wear side.
  • the upper and lower fabrics 10, 20 are connected to one another with the aid of individual weft threads 23 of the upper layer of the lower fabric 20, which are interwoven at greater distances with individual warp threads 11 of the upper fabric.
  • the binding points can be arranged in such a way that they practically do not appear on the paper.
  • Figures 1 and 2 also show that the lower fabric 20 has a high warp density (Fig. 2) and this fact in connection with the high volume leads to a strong damping of the drainage impulses and thus to high paper quality.
  • FIG. 3 shows a further exemplary embodiment of the forming fabric according to the invention, the position of the cutting plane through the fabric in FIG. 3 corresponding to that in FIG. 2.
  • the upper fabric 30 of the paper machine screen according to FIG. 3 and the lower layer of the two-layer U lower fabric 40 do not differ from the fabric described first.
  • the upper fabric has a very uniform 1 ⁇ 1 weave with chain 31 and weft 3.2, while a strong weft thread 42 that wears out is interwoven with the warp threads 41 of the lower fabric lying very close together, that a very wear-resistant weft rotor is created.
  • the weft 43 of the upper layer of the lower fabric 40 is not connected to the upper fabric 30.
  • the bond between the two-ply lower fabric 40 and the upper fabric 30 is produced by a separate weft 44, which is interwoven with individual warp threads of the upper fabric and warp threads 41 of the lower fabric 40 at those locations where the latter are bent over the weft thread 43 of the upper layer of the lower fabric .

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  • Paper (AREA)
  • Woven Fabrics (AREA)
EP84104291A 1983-05-25 1984-04-16 Toile de formation à plusieurs couches pour la partie humide d'une machine à papier Expired EP0126943B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84104291T ATE35705T1 (de) 1983-05-25 1984-04-16 Mehrlagiges formiersieb fuer die nasspartie einer papiermaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3318960 1983-05-25
DE19833318960 DE3318960A1 (de) 1983-05-25 1983-05-25 Mehrlagiges formiersieb fuer die nasspartie einer papiermaschine

Publications (3)

Publication Number Publication Date
EP0126943A2 true EP0126943A2 (fr) 1984-12-05
EP0126943A3 EP0126943A3 (en) 1985-06-19
EP0126943B1 EP0126943B1 (fr) 1988-07-13

Family

ID=6199841

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84104291A Expired EP0126943B1 (fr) 1983-05-25 1984-04-16 Toile de formation à plusieurs couches pour la partie humide d'une machine à papier

Country Status (3)

Country Link
EP (1) EP0126943B1 (fr)
AT (1) ATE35705T1 (fr)
DE (2) DE3318960A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7581567B2 (en) 2006-04-28 2009-09-01 Weavexx Corporation Papermaker's forming fabric with cross-direction yarn stitching and ratio of top machine direction yarns to bottom machine direction yarns of 2:3
US20090183795A1 (en) 2008-01-23 2009-07-23 Kevin John Ward Multi-Layer Papermaker's Forming Fabric With Long Machine Side MD Floats
US7766053B2 (en) 2008-10-31 2010-08-03 Weavexx Corporation Multi-layer papermaker's forming fabric with alternating paired and single top CMD yarns
US8251103B2 (en) 2009-11-04 2012-08-28 Weavexx Corporation Papermaker's forming fabric with engineered drainage channels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994280A (en) * 1932-04-21 1935-03-12 Hindle Thomas Drier felt for use on paper making machines
US2047610A (en) * 1933-09-21 1936-07-14 William A Barrell Drier felt for paper machines and the like
US2854032A (en) * 1953-08-20 1958-09-30 William E Hooper And Sons Comp Dryer felt
US4314589A (en) * 1978-10-23 1982-02-09 Jwi Ltd. Duplex forming fabric
EP0097966A2 (fr) * 1982-06-29 1984-01-11 Hermann Wangner GmbH & Co. KG Tissu combiné pour machines à papier

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1994280A (en) * 1932-04-21 1935-03-12 Hindle Thomas Drier felt for use on paper making machines
US2047610A (en) * 1933-09-21 1936-07-14 William A Barrell Drier felt for paper machines and the like
US2854032A (en) * 1953-08-20 1958-09-30 William E Hooper And Sons Comp Dryer felt
US4314589A (en) * 1978-10-23 1982-02-09 Jwi Ltd. Duplex forming fabric
EP0097966A2 (fr) * 1982-06-29 1984-01-11 Hermann Wangner GmbH & Co. KG Tissu combiné pour machines à papier

Also Published As

Publication number Publication date
EP0126943A3 (en) 1985-06-19
DE3318960A1 (de) 1984-11-29
ATE35705T1 (de) 1988-07-15
EP0126943B1 (fr) 1988-07-13
DE3472693D1 (en) 1988-08-18

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