CONTINUOUS FILTER

Filtration process and filters for use with materials such as, but no limited to, polymeric melts, utilizing a band (18) of a filter medium sealed in a housing (10) by sealing rollers (24, 26) to seal the polymeric material from leaking to the outside of the housing. In one embodiment, the sealing r...

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Bibliographic Details
Main Authors KEILLOR, PETER T., III, KIRKSEY, WILLIAM A
Format Patent
LanguageEnglish
Published 19.04.1992
Edition5
Subjects
AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
SEPARATION
SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR
SHAPING OR JOINING OF PLASTICS
TRANSPORTING
WORKING OF PLASTICS
WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Summary:Filtration process and filters for use with materials such as, but no limited to, polymeric melts, utilizing a band (18) of a filter medium sealed in a housing (10) by sealing rollers (24, 26) to seal the polymeric material from leaking to the outside of the housing. In one embodiment, the sealing rollers make it possible to advance the filter medium through the housing continuously. In various embodiments, the filter medium can be advanced either by a take-up spool (32) or by driving the sealing rollers and the rate of movement of the filter medium through the housing can be controlled to maintain a constant pressure drop across the filter. Maintaining constant conditions through continuous advancement of the filter medium during filtration yields higher product quality and dimensional stability.
Bibliography:Application Number: CA19912071965