| 摘要 |
An object of the present invention is to provide a filling apparatus capable of establishing the positional coincidence between creases (m1 and m2) formed beforehand on a packaging material (11) and actual creases (n1 and n2) to thereby improve the appearance of a packaging container (15). The filling apparatus includes a light source (21) for irradiating, with light, a portion of the outer circumferential surface of a packaging material tube (41) having an overlap portion (S2), the portion including at least the overlap portion (S2); light detection means for issuing a sensor output upon reception of light emitted from the light source (21) and reflected from the outer circumferential surface of the packaging material tube (41); and overlap portion detection processing means (28) for detecting the overlap portion (S2) by means of a peak in the sensor output. In this case, regarding light reflected from the outer circumferential surface of the packaging material tube (41), light reflected from an end portion of the packaging material (11) exhibits great intensity and causes emergence of a peak in a sensor output from the light detection means. Accordingly, a portion of the packaging material tube (41) which causes emergence of a peak in the sensor output can be detected as the overlap portion (S2). <IMAGE> |
