B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/92 (2006.01) B29C 31/06 (2006.01) B29C 47/10 (2006.01) G01G 13/24 (2006.01) G01G 19/34 (2006.01)
Patent
CA 2061393
A method of determining the rate at which plastic granules are received by an extruder from a feed container having an outlet which opens into the inlet of the extruder. In which method granules are continuously fed to a supply container and consecutive charges of granules are intermittently fed to the feed container. The feed container is weighed before or at the beginning of or after or at the end of its filling operation. The time required to withdraw the material in the amount which has been determined by the weighing operations is measured, and the flow rate of the material is calculated from the amounts of material which have been received from the feed container in the measured intervals of time. A uniform feeding of material into the extruder will be ensured if granules and marginal strip material are supplied to the cyclone like container. The supply container is substantially used only as a mixing container and opens into a charge-holding container, which is provided between the supply container and the feed container. The granules of at least one component thereof and recycled marginal strips are continuously fed to the supply container. The feed container and the charge-holding container are weighed in intervals of time, and the feed rate of the granules of the at least one component is correspondingly increased or reduced when the measured total weight of the feed container and of the charge-holding container differs from a predetermined desired weight.
Marks & Clerk
Windmoller & Holscher
LandOfFree
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