Semipermeable capillary having overlapped strengthening layer
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United States of America Patent
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Feb 13, 2001
Grant Date -
N/A
app pub date -
Jul 15, 1997
filing date -
Jul 17, 1996
priority date (Note) -
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Abstract
Described is a semipermeable capillary having a tubular semipermeable wall composed of a membrane-forming material (2) and a tubular strengthening layer (1). The tubular strengthening layer includes an elongated tape having mutually overlapped longitudinal edges. The tubular strengthening layer has an open cohesive structure that is embedded in the membrane-forming material whereby the mutually overlapping longitudinal edges are joined together by the membrane-forming material and a continuous phase is formed between the semipermeable wall and the strengthening layer.
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