FEEDING DEVICE FOR FOIL STOCK IN PRODUCTION PROCESS OF SEALED STERILE PACKAGE

摘要

PROBLEM TO BE SOLVED: To identify and separate unacceptable products from acceptable products or shut down a device by a computer system upon detection of a defect. SOLUTION: The device pulls a web of foil off a large diameter feed roll and maintains web alignment as it travels down the line through the device by a system that optically detects transverse movement of the web as it is fed into the device and adjusts the position of the feed roll relative to a centerline of travel using a bi-directional stepper motor. Discontinuities in the polymer coating on the top surface of the web of foil are automatically detected so that remedial steps can be taken to avoid processing defective sections of the web. A vision system having video cameras connected to a specially adapted computer enables monitoring the product travelling through the device to detect various defects in the product formation. COPYRIGHT: (C)2008,JPO&INPIT