GB858313A - Improvements in or relating to filtration elements and methods of making the same - Google Patents

Improvements in or relating to filtration elements and methods of making the same

Info

Publication number
GB858313A
GB858313A GB13422/57A GB1342257A GB858313A GB 858313 A GB858313 A GB 858313A GB 13422/57 A GB13422/57 A GB 13422/57A GB 1342257 A GB1342257 A GB 1342257A GB 858313 A GB858313 A GB 858313A
Authority
GB
United Kingdom
Prior art keywords
cartridge
outside
solution
resin
pulp
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
Application number
GB13422/57A
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.)
CONNECTICUT FILTER CORP
Original Assignee
CONNECTICUT FILTER CORP
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 CONNECTICUT FILTER CORP filed Critical CONNECTICUT FILTER CORP
Publication of GB858313A publication Critical patent/GB858313A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J3/00—Manufacture of articles by pressing wet fibre pulp, or papier-mâché, between moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/005—Making filter elements not provided for elsewhere

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Filtering Materials (AREA)

Abstract

In making a tubular filter cartridge, cellulosic fibres are pulped in a liquid containing between 85 and 75% by volume of a non-polar organic liquid, e.g. methyl or isopropyl alcohol or ethylene glycol, and between 15 and 25% of water, to form a pulp containing between 2 and 6% of fibres, computed on their dry weight, and the pulp is diluted with more liquid until it contains between 0,3 and 0,8% of fibres and is then vacuum-felted on a foraminous tubular former, e.g. by applying suction to the interior of the tubular former immersed in the diluted pulp. The cartridge is dried, preferably by withdrawing heated air through it from the outside to the inside. If necessary, its outer surface is trimmed. The cartridge is impregnated with a solution of a resin, as by withdrawing the solution through it from the outside to the inside. The resin solution may be a solution of melamine-, phenol- or ureaformaldehyde resin or polyvinyl chloride in aqueous isopropyl alcohol. Excess resin is removed from the cartridge by drawing warm air through it from the outside to the inside. The cartridge is then dried and cured by forcing hot air through it from the inside to the outside. Curing may be completed in an oven. The cured cartridge may be trimmed to a desired size. Specification 677,515 also is referred to.
GB13422/57A 1956-07-06 1957-04-26 Improvements in or relating to filtration elements and methods of making the same Expired GB858313A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US858313XA 1956-07-06 1956-07-06

Publications (1)

Publication Number Publication Date
GB858313A true GB858313A (en) 1961-01-11

Family

ID=22194222

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13422/57A Expired GB858313A (en) 1956-07-06 1957-04-26 Improvements in or relating to filtration elements and methods of making the same

Country Status (1)

Country Link
GB (1) GB858313A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154461A (en) * 1984-02-03 1985-09-11 Helmut Schafft Filter element, method of production and use

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2154461A (en) * 1984-02-03 1985-09-11 Helmut Schafft Filter element, method of production and use
US4925570A (en) * 1984-02-03 1990-05-15 Helmut Schafft Method of filtering
US4986913A (en) * 1984-02-03 1991-01-22 Helmut Schafft Filter pad

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