Heat seal position measurement device for plastic film

   
   

An apparatus for detecting the heat-sealed interfaces of plastic film being fed into a machine includes a plurality of light sources opposed to a heat-sealed plastic film. The lights are spaced from each other in directions parallel and perpendicular to the direction in which the plastic film is fed. An optical sensor is opposed to the plastic film, and a cover plate is placed between the optical sensor and the plastic film, the cover plate including small hole or narrow slit through which light passes. The lights reflect from or permeate through the plastic film and then pass to the optical sensor. The optical sensor image-recognizes the reflected or permeated lights and reads the minutely rugged surface of the heat sealed portion to detect the heat sealed interface of the plastic film.

Um instrumento para detectar as relações heat-sealed da película plástica que está sendo alimentada em uma máquina inclui um plurality das fontes claras opostas a uma película plástica heat-sealed. As luzes são espaçadas de se nos sentidos paralelos e na perpendicular ao sentido em que a película plástica é fed. Um sensor ótico é oposto à película plástica, e uma placa de tampa é colocada entre o sensor ótico e a película plástica, a placa de tampa including o furo pequeno ou o narrow cortado através de que passagens claras. As luzes refletem de ou permeate através da película plástica e passam então ao sensor ótico. O sensor ótico imagem-reconhece as luzes refletidas ou permeated e lê a superfície minuciosa áspera da parcela selada calor para detectar a relação selada calor da película plástica.

 
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