CA2356804A1 - Vented lead blade - Google Patents

Vented lead blade Download PDF

Info

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
Application number
CA002356804A
Other languages
French (fr)
Other versions
CA2356804C (en
Inventor
John G. Buchanan
Richard E. Pitt
Roy Van Essen
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.)
ASTENJOHNSON Inc
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of CA2356804A1 publication Critical patent/CA2356804A1/en
Application granted granted Critical
Publication of CA2356804C publication Critical patent/CA2356804C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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.
CA002356804A 2000-09-05 2001-09-04 Vented lead blade Expired - Fee Related CA2356804C (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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