EP0960973B1 - Single tier drying section - Google Patents
Single tier drying section Download PDFInfo
- Publication number
- EP0960973B1 EP0960973B1 EP99630046A EP99630046A EP0960973B1 EP 0960973 B1 EP0960973 B1 EP 0960973B1 EP 99630046 A EP99630046 A EP 99630046A EP 99630046 A EP99630046 A EP 99630046A EP 0960973 B1 EP0960973 B1 EP 0960973B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dryer
- vacuum
- felt
- web
- fabric
- 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
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F5/00—Dryer section of machines for making continuous webs of paper
- D21F5/02—Drying on cylinders
- D21F5/04—Drying on cylinders on two or more drying cylinders
- D21F5/042—Drying on cylinders on two or more drying cylinders in combination with suction or blowing devices
-
- 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
Definitions
- CA-A-2 216 048 there is described a single tier dryer section of a papermaking machine according to the preamble of claim 1. More specifically, in CA-A-2 216 048, the single dryer section has dryer rolls with a reversing vacuum roll positioned between each pair to transfer and wrap the dryer felt and paper web against the next dryer roll. A vacuum box is positioned between adjacent dryer rolls and over the vacuum roll to hold the web on the dryer felt by vacuum, and the dryer felt has a permeability of between 2134 and 15240 cm 3 /min/cm2 (70 and 500 cubic feet per minute per square foot).
- the permeability of the dryer felt is at least 18288 cm 3 /min/cm 2 (600 cfm).
- the present invention includes the employment of an open fabric or dryer felt having a high permeability. Additionally, trials on a pilot single tier BelChamp type dryer section have shown that an open fabric having a high permeability of 18288 cm 3 /min/cm 2 (600 cfm) can be used without blowing the sheet in the pocket areas.
- the felt according to the present invention is preferably of the type having an open structure and having a permeability of 18288 cm 3 /min/cm 2 (600 cfm) while being of a lower caliper.
Landscapes
- Paper (AREA)
- Drying Of Solid Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US8238998A | 1998-05-20 | 1998-05-20 | |
US82389 | 1998-05-20 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0960973A2 EP0960973A2 (en) | 1999-12-01 |
EP0960973A3 EP0960973A3 (en) | 2000-07-05 |
EP0960973B1 true EP0960973B1 (en) | 2007-01-03 |
Family
ID=22170889
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99630046A Expired - Lifetime EP0960973B1 (en) | 1998-05-20 | 1999-05-07 | Single tier drying section |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0960973B1 (ja) |
JP (1) | JP3236997B2 (ja) |
CA (1) | CA2270755A1 (ja) |
DE (1) | DE69934630T2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005026310A1 (de) * | 2005-06-08 | 2006-12-14 | Voith Patent Gmbh | Papiermaschine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0171891A1 (en) * | 1984-08-10 | 1986-02-19 | Asten Group, Inc. | Laminated soft faced-spiral woven papermakers fabric |
EP0211471A1 (en) * | 1985-07-08 | 1987-02-25 | Asten Group, Inc. | Laminated spiral mesh papermakers fabric |
EP0873172A1 (en) * | 1995-10-20 | 1998-10-28 | Kimberly-Clark Worldwide, Inc. | High stiffness nonwoven filter medium |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4934067A (en) | 1987-02-13 | 1990-06-19 | Beloit Corporation | Apparatus for drying a web |
US5933977A (en) * | 1995-09-12 | 1999-08-10 | Beloit Technologies, Inc. | Curl control with dryer aircaps |
US5873180A (en) * | 1996-09-25 | 1999-02-23 | Beloit Technologies, Inc. | Papermaking dryer section with partitioned vacuum box for threading |
-
1999
- 1999-05-04 CA CA 2270755 patent/CA2270755A1/en not_active Abandoned
- 1999-05-07 EP EP99630046A patent/EP0960973B1/en not_active Expired - Lifetime
- 1999-05-07 DE DE69934630T patent/DE69934630T2/de not_active Expired - Fee Related
- 1999-05-17 JP JP13563099A patent/JP3236997B2/ja not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0171891A1 (en) * | 1984-08-10 | 1986-02-19 | Asten Group, Inc. | Laminated soft faced-spiral woven papermakers fabric |
EP0211471A1 (en) * | 1985-07-08 | 1987-02-25 | Asten Group, Inc. | Laminated spiral mesh papermakers fabric |
EP0873172A1 (en) * | 1995-10-20 | 1998-10-28 | Kimberly-Clark Worldwide, Inc. | High stiffness nonwoven filter medium |
Also Published As
Publication number | Publication date |
---|---|
CA2270755A1 (en) | 1999-11-20 |
EP0960973A3 (en) | 2000-07-05 |
DE69934630D1 (de) | 2007-02-15 |
JP3236997B2 (ja) | 2001-12-10 |
DE69934630T2 (de) | 2007-10-04 |
JPH11350378A (ja) | 1999-12-21 |
EP0960973A2 (en) | 1999-12-01 |
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