Patent ID: 8069859
Filing Date: 2011-12-06
Classification: A24D,G01N,Y10S

Abstract:
1. A wrapping paper inspection apparatus for inspecting wrapping paper with a low flame spread material arranged in stripes on one side thereof, comprising: a liquid application section including a nozzle arranged in a wrapping-paper discharge path, in which the wrapping paper is unwound and continuously discharged, for spraying a volatile liquid onto the one side of the wrapping paper and wetting the one side of the wrapping paper with said volatile liquid, the volatile liquid showing a difference in infiltration rate between base portions of the wrapping paper not affixed with the low flame spread material and the stripes of low flame spread material; an image pickup section including an image pickup position defined on the wrapping-paper discharge path downstream of said nozzle, for irradiating light to the wrapping paper wetted with the volatile liquid by said nozzle at the image pickup position while the volatile liquid is being infiltrated into the wrapping paper, detecting the light transmitted through the wrapping paper or the light reflected from the one side of the wrapping paper, and generating an image signal on the basis of the detected light; and a wrapping paper inspection section for determining defects in the low flame spread material on the wrapping paper from the image signal generated by said image pickup section; and an air blower configured to blow off liquid sprayed on the wrapping paper, the air blower being arranged downstream from image pickup section.