| 摘要 |
<p>The invention is based on the method of passing air through a plug of fibre and using an interrelationship not previously used namely that between volume of air passing through a plug of fibre, time taken for this volume to pass through the plug of fibre and the fibre fineness. The equipment consists of an outer vessel (1) containing liquid (2), an inner vessel (3), a fibre holding chamber (4) with perforations at (5), a plug (6) with perforations at (7) to compress the fibres (8). Fibre fineness is determined by lifting and releasing the inner vessel and nothing the time taken for it to sink in the liquid from one height to another height, both predefined. Alternately the extent of sinking of the inner vessel for a predefined, fixed time is correlated to the fibre fineness.</p> |
