IT1069846B - Crimped paper for filter element - having pattern of higher peaks at intervals for better surface usage - Google Patents

Crimped paper for filter element - having pattern of higher peaks at intervals for better surface usage

Info

Publication number
IT1069846B
IT1069846B IT5224876A IT5224876A IT1069846B IT 1069846 B IT1069846 B IT 1069846B IT 5224876 A IT5224876 A IT 5224876A IT 5224876 A IT5224876 A IT 5224876A IT 1069846 B IT1069846 B IT 1069846B
Authority
IT
Italy
Prior art keywords
crimps
filter material
filter element
intervals
pattern
Prior art date
Application number
IT5224876A
Other languages
Italian (it)
Original Assignee
Evans Adlard & Co
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
Priority claimed from GB47753/75A external-priority patent/GB1518554A/en
Application filed by Evans Adlard & Co filed Critical Evans Adlard & Co
Application granted granted Critical
Publication of IT1069846B publication Critical patent/IT1069846B/en

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  • Filtering Materials (AREA)

Abstract

One direction filter element for a flowing medium consists of a ring of folded permeable filter material with parallel crimp lines which run at rt. angles to the folds in the element. A section of these waves or crimps have higher peakes than the others. These then serve as spacers for a adjoining sheets of filter material. These should be a minority of crimps, being in a ratio of 1 to 3 or 4. alternatively they alternate with one high, one low to give a W profile. Suitable filter material is paper impregnated with a resin. Used in filtering a variety of flowing median. The problem with crimped paper is that while the available surface is extended, the peaks of the crimps touch the adjoining sheet and reduce the available area at this point. By having raised peaks, the available area is significantly increased.
IT5224876A 1975-11-20 1976-11-18 Crimped paper for filter element - having pattern of higher peaks at intervals for better surface usage IT1069846B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB47753/75A GB1518554A (en) 1975-11-20 1975-11-20 Disposable filter element
GB4775376 1976-11-12

Publications (1)

Publication Number Publication Date
IT1069846B true IT1069846B (en) 1985-03-25

Family

ID=26266128

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5224876A IT1069846B (en) 1975-11-20 1976-11-18 Crimped paper for filter element - having pattern of higher peaks at intervals for better surface usage

Country Status (1)

Country Link
IT (1) IT1069846B (en)

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