CA2356804A1 - Vented lead blade - Google Patents
Vented lead blade Download PDFInfo
- Publication number
- CA2356804A1 CA2356804A1 CA002356804A CA2356804A CA2356804A1 CA 2356804 A1 CA2356804 A1 CA 2356804A1 CA 002356804 A CA002356804 A CA 002356804A CA 2356804 A CA2356804 A CA 2356804A CA 2356804 A1 CA2356804 A1 CA 2356804A1
- Authority
- CA
- Canada
- Prior art keywords
- forming
- forming fabric
- fabric
- stock jet
- lead blade
- 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
Links
- 239000004744 fabric Substances 0.000 abstract 7
- 239000007788 liquid Substances 0.000 abstract 1
Classifications
-
- 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
- D21F9/02—Complete machines for making continuous webs of paper of the Fourdrinier type
-
- 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
- D21F1/48—Suction apparatus
- D21F1/483—Drainage foils and bars
-
- 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
Landscapes
- Paper (AREA)
Abstract
A vented lead blade to be located in a papermaking machine so that the stock jet impinges the forming fabric at, or near to, its trailing edge, serves to bend the forming fabric before it enters the forming section, has grooves to vent a substantial proportion of any air trapped in the wedge shaped space between the surface of the forming fabric and the surface of the stock jet, and at least some of any liquid carried with the air. The vented lead blade enables the forming fabric to be positioned so that the angle of impingement of the stock jet onto the forming fabric can be minimized to substantially zero; facilitates reduction of the unsupported length of the stock jet; and can be used in an open surface forming section with a single forming fabric, or in the forming section of a two fabric papermaking machine.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0021767.9 | 2000-09-05 | ||
GBGB0021767.9A GB0021767D0 (en) | 2000-09-05 | 2000-09-05 | Vented lead blade |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2356804A1 true CA2356804A1 (en) | 2002-03-05 |
CA2356804C CA2356804C (en) | 2008-03-11 |
Family
ID=9898876
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002356804A Expired - Fee Related CA2356804C (en) | 2000-09-05 | 2001-09-04 | Vented lead blade |
Country Status (7)
Country | Link |
---|---|
US (1) | US20020046821A1 (en) |
EP (1) | EP1315861B1 (en) |
AU (1) | AU2001293532A1 (en) |
CA (1) | CA2356804C (en) |
DE (1) | DE60124739T2 (en) |
GB (1) | GB0021767D0 (en) |
WO (1) | WO2002020899A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7005040B2 (en) * | 2000-09-05 | 2006-02-28 | Astenjohnson, Inc. | Fabric support element for a papermaking machine |
BR0318180A (en) * | 2003-03-10 | 2006-03-21 | Astenjohnson Inc | fabric support element for a papermaking machine |
DE10332658A1 (en) * | 2003-07-18 | 2005-02-03 | Voith Paper Patent Gmbh | Sieve screen section of papermaking machine, includes roller opposite forming cylinder supporting inner surface of second sieve belt |
JP5444362B2 (en) | 2008-10-21 | 2014-03-19 | アステンジョンソン・インコーポレーテッド | Twin fabric forming part with multiple drain shoes |
US20120042765A1 (en) | 2010-08-20 | 2012-02-23 | Kazda Austin J | Reciprocating saw blade |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4802954A (en) * | 1986-11-20 | 1989-02-07 | Valmet-Dominion Inc. | Forming board for papermaking machine |
US5160583A (en) * | 1991-12-02 | 1992-11-03 | Beloit Corporation | Controlled jet injection apparatus for a papermaking machine headbox |
JP3244911B2 (en) * | 1994-01-28 | 2002-01-07 | 三菱重工業株式会社 | Twin wire former for paper machine |
-
2000
- 2000-09-05 GB GBGB0021767.9A patent/GB0021767D0/en not_active Ceased
-
2001
- 2001-08-31 US US09/942,649 patent/US20020046821A1/en not_active Abandoned
- 2001-09-04 CA CA002356804A patent/CA2356804C/en not_active Expired - Fee Related
- 2001-09-05 WO PCT/CA2001/001260 patent/WO2002020899A1/en active IP Right Grant
- 2001-09-05 EP EP01973866A patent/EP1315861B1/en not_active Expired - Lifetime
- 2001-09-05 AU AU2001293532A patent/AU2001293532A1/en not_active Abandoned
- 2001-09-05 DE DE60124739T patent/DE60124739T2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP1315861B1 (en) | 2006-11-22 |
US20020046821A1 (en) | 2002-04-25 |
GB0021767D0 (en) | 2000-10-18 |
DE60124739T2 (en) | 2007-03-01 |
DE60124739D1 (en) | 2007-01-04 |
AU2001293532A1 (en) | 2002-03-22 |
WO2002020899A1 (en) | 2002-03-14 |
EP1315861A1 (en) | 2003-06-04 |
CA2356804C (en) | 2008-03-11 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |