Title:
FILTER APPARATUS AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPS5830310
Kind Code:
A
Abstract:
A membrane pack is constructed, which includes a highly porous carrier sandwiched between a pair of membrane structures that must be kept continuously wet, the pack having a hole and being sealed around the hole to prevent the passage of polluting liquid lying in the hole, into the porous carrier of the pack. The membrane pack is constructed by impregnating the carrier with a flowable polymer which can solidify, to leave a thin layer of the polymer on either surface of the carrier, and by then welding the polymer layers to membranes at either face of the carrier. Ultrasonic welding of the membrane structures to the carrier is performed while the membrane structures are wet, the ultrasonic welding dissipating moisture lying at the interface between the carrier and membrane structures to permit even hydrophilic polymers to be utilized.
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Inventors:
JIYON MAAKU MAIKERUZU
JIERARUDO ARAN KUROOPUNITSUKU
RICHIYAADO ARUFURETSUDO MOORIS
JIERARUDO ARAN KUROOPUNITSUKU
RICHIYAADO ARUFURETSUDO MOORIS
Application Number:
JP2062382A
Publication Date:
February 22, 1983
Filing Date:
February 10, 1982
Export Citation:
Assignee:
DRESSER IND
International Classes:
B01D63/00; B01D63/08; B01D63/16; B01D25/26; B01D65/10; B01D67/00; B29C63/00; B29C65/08; C08J5/12; (IPC1-7): B01D13/04; B01D25/26; B29C27/08
Domestic Patent References:
| JPS52127937A | 1977-10-27 | |||
| JPS5558279A | 1980-04-30 | |||
| JPS5243782A | 1977-04-06 | |||
| JPS53125275A | 1978-11-01 | |||
| JPS5537923A | 1980-03-17 |
Attorney, Agent or Firm:
Kyozo Yuasa