GB1261117A - Two-wire former - Google Patents
Two-wire formerInfo
- Publication number
- GB1261117A GB1261117A GB27347/69A GB2734769A GB1261117A GB 1261117 A GB1261117 A GB 1261117A GB 27347/69 A GB27347/69 A GB 27347/69A GB 2734769 A GB2734769 A GB 2734769A GB 1261117 A GB1261117 A GB 1261117A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- belts
- roll
- stock
- wires
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/26—De-aeration of paper stock
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F9/00—Complete machines for making continuous webs of paper
- D21F9/003—Complete machines for making continuous webs of paper of the twin-wire type
Abstract
1,261,117. Papermaking. BELOIT CORP. 29 May, 1969 [25 June, 1968], No. 27347/69. Heading D2A. A paper-making machine comprises, in combination, successive first, second and third guides, and first and second forming belts. The first and second belts are arranged to travel, respectively, over the first and second guides through initially close spacing, the stock flow being there introduced between the wires; immediately thereafter they travel through gradual convergence and into general parallelism with the web in between, and are maintained parallel as they travel over portions of the first and second guides towards the third guide, over which at least one of the runs travels. The first guide is a non-circularlycurved stationary water-permeable surface defined by the locus of a multiplicity of closelylongitudinally-spaced belt-contacting, transverse edges; and the second guide is a rotary member with an open, water-receiving periphery about which the second run is wrapped during the forming zone. As shown, the first member 15 is formed from blades 15a, 15b, 15c, 15d and 15e, with preferably more than 50% open area. The blades may be mounted for adjustment either individually (e.g. 15bb) or collectively (e.g. 17bb). The locus of the wirecontacting edges may be of from H=CD<SP>k</SP> where H is the distance in inches between the wires, D is the distance from the stock inlet, and C and K are constants, C being from 0.5-1.6, and K from -0.2 to -0.8, depending on circumstances. The second guide may be a suction roll, with the particular suction shell configuration shown. A flexible headbox nozzle J is provided to seal the inlet of stock with wires 11 and 21. Lips J-1 and J-2 are resilient, e.g. of rubber, and plates J-3 and J-4 are metallic to provide stiffness. The head-box is adjustable to allow movement of the direction of the centre-line of flow, C L to alter the ratio of drainage through the first and second members. The belts may be of synthetic materials e.g. nylon, and a saveall and a foil may be provided (Fig. 1B, not shown). The formed web may be picked up from one of the belts, after the other has been removed by the third guide, which may be a solid roll, by means of a felt, and carried by the felt through a wet press between a plain and a grooved roll, pressure being applied by a third roll contacting the grooved roll (Fig. 4B, not shown). The headbox may also be inclined to direct stock upwardly (Fig. 4A, not shown).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US73979668A | 1968-06-25 | 1968-06-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1261117A true GB1261117A (en) | 1972-01-19 |
Family
ID=24973816
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27347/69A Expired GB1261117A (en) | 1968-06-25 | 1969-05-29 | Two-wire former |
Country Status (10)
Country | Link |
---|---|
US (1) | US3582467A (en) |
JP (1) | JPS4840564B1 (en) |
BE (1) | BE734977A (en) |
CH (1) | CH493694A (en) |
DE (1) | DE1931686C3 (en) |
ES (1) | ES369117A1 (en) |
FI (1) | FI55232C (en) |
FR (1) | FR2014192A1 (en) |
GB (1) | GB1261117A (en) |
NL (1) | NL6909710A (en) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3997390A (en) * | 1965-08-14 | 1976-12-14 | Valmet Oy | Twin-wire paper machine and method for operating the same |
DE2754622C3 (en) * | 1977-12-08 | 1981-08-06 | J.M. Voith Gmbh, 7920 Heidenheim | Wet end of a paper machine |
US4240872A (en) * | 1978-03-17 | 1980-12-23 | Ab Karlstads Mekaniska Werkstad | Suspension device for a headbox for paper and pulp machines |
US4235667A (en) * | 1979-04-09 | 1980-11-25 | Beloit Corporation | Method of and means for attaining uniformity in paper webs produced on a roll former |
DE3128156C2 (en) * | 1981-07-16 | 1985-01-24 | J.M. Voith Gmbh, 7920 Heidenheim | Wire section of a paper machine |
FI75375C (en) * | 1982-03-02 | 1988-06-09 | Valmet Oy | Path forming lot for paper machine. |
US5389206A (en) * | 1989-08-22 | 1995-02-14 | J. M. Voith Gmbh | Twin wire former |
US5468348A (en) * | 1990-07-10 | 1995-11-21 | Beloit Technologies, Inc. | Multi-ply web former and method |
FI905896A (en) * | 1990-11-29 | 1992-05-30 | Valmet Paper Machinery Inc | FORMNINGSGAPSARRANGEMANG I EN DUBBELVIRAFORMARE AV EN PAPPERSMASKIN. |
AU656190B2 (en) * | 1991-04-08 | 1995-01-27 | Scott Paper Company | Method and apparatus for improved twin wire forming |
DE4117597A1 (en) * | 1991-05-29 | 1992-12-03 | Voith Gmbh J M | DOUBLE SCREEN FOR A PAPER MACHINE |
US5129988A (en) * | 1991-06-21 | 1992-07-14 | Kimberly-Clark Corporation | Extended flexible headbox slice with parallel flexible lip extensions and extended internal dividers |
US5160583A (en) * | 1991-12-02 | 1992-11-03 | Beloit Corporation | Controlled jet injection apparatus for a papermaking machine headbox |
DE4332162C2 (en) * | 1993-09-22 | 1994-12-01 | Voith Gmbh J M | Twin wire former of a paper machine |
US5766419A (en) * | 1996-07-23 | 1998-06-16 | Valmet Corporation | Twin-wire gap former in a paper machine |
DE19705592A1 (en) * | 1997-02-14 | 1998-08-20 | Voith Sulzer Papiermasch Gmbh | Paper-making machine stock inlet |
DE19852635A1 (en) * | 1998-11-14 | 2000-05-18 | Voith Sulzer Papiertech Patent | Entry into the fourdrinier section of a papermaking/cardboard production machine has fourdrinier support surfaces at the converging entry for a pulp flow from the stock inlet without turbulence |
DE19941676A1 (en) * | 1999-09-01 | 2001-03-08 | Voith Paper Patent Gmbh | Device for dewatering a substance-water mixture |
SE532154C2 (en) * | 2006-10-06 | 2009-11-03 | Metso Paper Inc | Double wire press comprising sealing elements for dewatering a fiber suspension |
-
1968
- 1968-06-25 US US739796A patent/US3582467A/en not_active Expired - Lifetime
-
1969
- 1969-05-29 GB GB27347/69A patent/GB1261117A/en not_active Expired
- 1969-06-21 DE DE1931686A patent/DE1931686C3/en not_active Expired
- 1969-06-23 BE BE734977D patent/BE734977A/xx unknown
- 1969-06-24 CH CH962969A patent/CH493694A/en not_active IP Right Cessation
- 1969-06-24 FI FI1865/69A patent/FI55232C/en active
- 1969-06-25 NL NL6909710A patent/NL6909710A/xx unknown
- 1969-06-25 FR FR6921197A patent/FR2014192A1/fr not_active Withdrawn
- 1969-06-25 JP JP44049732A patent/JPS4840564B1/ja active Pending
- 1969-06-25 ES ES369117A patent/ES369117A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE734977A (en) | 1969-12-01 |
NL6909710A (en) | 1969-12-30 |
CH493694A (en) | 1970-07-15 |
US3582467A (en) | 1971-06-01 |
FI55232B (en) | 1979-02-28 |
FI55232C (en) | 1979-06-11 |
DE1931686B2 (en) | 1974-05-30 |
JPS4840564B1 (en) | 1973-12-01 |
DE1931686C3 (en) | 1975-01-16 |
DE1931686A1 (en) | 1970-02-26 |
ES369117A1 (en) | 1971-06-01 |
FR2014192A1 (en) | 1970-04-17 |
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