Patent ID: 7061249
Filing Date: 2006-06-13
Classification: B29C,B29L,G01M

Abstract:
1. A seal condition inspection apparatus for inspecting a seal between two superimposed portions of a packaging material, the apparatus comprising: a pair of opposing electrodes spaced apart a distance d and disposed on opposing sides of a seal portion for pressing, with a predetermined pressure, the seal therebetween; a power supply unit, through which the electrodes are connected, for passing a current through a portion of the seal between the electrodes; electrically variable-quantity detection means for detecting an electrically variable quantity of the seal at a portion between the opposing electrodes, said variable quantity varying as a function of distance d, to be inspected for seal condition; seal condition indicator value calculation processing means for calculating, on the basis of the detected electrically variable quantity, a seal condition indicator value indicative of seal condition of the inspected seal portion; and seal condition judgment processing means for judging from the seal condition indicator value whether seal condition is good or defective.