METHOD FOR THERMALLY MONITORING PROCESS FOR FORMING PLASTIC BLOW-MOLDED CONTAINERS

摘要

The present invention provides a method of measuring the placement of material forming a blow-molded plastic container after the container is released from a mold of a blow molder having a plurality of molds, wherein each plastic container comprises a continuous sidewall and a base, the method comprising the steps of: detecting with an infrared camera infrared light emitted from the container after the container is released from a mold; converting the detected infrared light into corresponding electrical signals; transmitting the electrical signals to a microprocessor; comparing in the microprocessor the electrical signals with stored data regarding desired material distribution forming the plastic container; and producing output information regarding the placement of material forming the container.

主权项

1. A method of controlling a blow molding production line based on measuring the placement of material forming a blow-molded plastic container produced on the production line, the method comprising the steps of:
providing an extrusion blow molding machine having a plurality of molding stations each comprising a mold and a parison extruding system, wherein the extrusion blow molding machine provides an output of plastic blow-molded containers, wherein each plastic container comprises a continuous sidewall and a base; measuring the placement of material forming the sidewall and base of the containers by:
detecting with an infrared camera infrared light emitted from the container;converting the detected infrared light into corresponding electrical signals;transmitting to a microprocessor the electrical signals;comparing in the microprocessor the electrical signals with stored data regarding desired material distribution forming the plastic container; andproducing output information regarding the placement of material forming the plastic container and, if the output information indicates that a bottle has a material distribution that is a deviation from the desired material distribution, manually performing at least one of the following steps: i. adjusting at least one parameter of the extrusion blow molding machine to bring material placement within the desired material distribution; and ii. stopping the production line.