Cavity identification of mold of origin

Details Cavity identification of mold of origin Cavity identification of mold of origin

G - Physics

01

N

354/56, 340/124.

G01N 21/27 (2006.01)

Patent

CA 1118070

ABSTRACT OF THE DISCLOSURE This invention relates to a system for determining which of a plurality of molds produced a particular container. A concentric ring code is molded into the bottom of each con- tainer as it is produced. The containers are then passed by a reading station, where light whose intensity is proportional to the angle of incidence is projected onto the bottom of the container. Readings are taken of the variation of intensity of light reflected to a particular point in order to determine the position of rings on the container. Suitable electronics then decode the ring position to determine the container code, thus allowing identification of the mold which produced each container.

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