| 摘要 |
<p>A filter capsule, for example for filtering molten polymers, comprises upper and lower generally flat annular filter media members (40, 40'), welded together at their common outer circumferences (42). Loosely held between the filter media members is an intermediate grooved support plate (48). In use, the polymer to be filtered passes through the media members (40, 40'), into the grooves (50, 50'), and into a mounting tube (not shown) around which the capsule is located. When the media members (40, 40') become clogged with polymer, they are machined off by cutting around the circumference (42). The support plate (48) is then cleaned and re-used with new filter media members.</p> |
