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
IT1069846BIT5224876AIT5224876AIT1069846BIT 1069846 BIT1069846 BIT 1069846BIT 5224876 AIT5224876 AIT 5224876AIT 5224876 AIT5224876 AIT 5224876AIT 1069846 BIT1069846 BIT 1069846B
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 GB47753/75Aexternal-prioritypatent/GB1518554A/en
Application filed by Evans Adlard & CofiledCriticalEvans Adlard & Co
Application grantedgrantedCritical
Publication of IT1069846BpublicationCriticalpatent/IT1069846B/en
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.
IT5224876A1975-11-201976-11-18Crimped paper for filter element - having pattern of higher peaks at intervals for better surface usage
IT1069846B
(en)