| 摘要 |
<p>The filter presents two or more sides with different mesh sizes and the side with the largest mesh size is designed to be shrunk in order to secure the side with smallest mesh size more tightly over the frame (1). A wet filtration device comprises a frame with an e.g. circular segment shape and a filter mesh (2, 3), preferably in the form of a sleeve, which has been shrunk over the frame, e.g. by heat-shrinking. The device presents two or more main sides with different mesh sizes and the side with the largest mesh size is designed to be shrunk in order to secure the side with smallest mesh size more tightly over the frame.</p> |
