| 摘要 |
A fluid treating filter of the extended surface area type including a frame having at least one flow-through aperture therein and a filter bag of the extended surface area type having a mouth therein for receiving fluid to be filtered therethrough, the mouth having a strip of heat shrinkable material disposed along and coextensive with its perimeter and attached thereto, the strip of heat shrinkable material being adapted for mating with the flow-through aperture frame upon subjecting the shrinkable material to heat treating conditions sufficient to shrink the material to form a fluid tight seal with the frame. |
