PURPOSE: To prevent return of warpage even when a long time elapses after its correction by a method wherein a blister package the warpage of which should be corrected is bent with a sealing film directed inward, and then pressed strongly against a hard elastic body by a small-diameter pressing roller which moves around so that the blister package is compulsorily curved in a reversed direction to the warpage.
CONSTITUTION: A blister package sheet 70 positioned in a recess 31b of a guide member 31 is, at first, curved and held with its sealing film 72 directed inward along an outer periphery of a rotary drum 41 of a pressing member 40, and then in this state, each small-diameter pressing roller 42 is contacted successively and strongly with the sealing film to squeeze the sheet successively, whereby the sheet is curved compulsorily in a reversed direction to that of the warpage. At this time, each pocket part 71a in the blister package sheet 70 is sunk into a groove part 31a of the guide member 31. Therefore, each pocket part 71a does not contact with a bottom surface of the groove part 31a by the pressing of the blister package sheet 70 by each of the small-diameter pressing rollers 42. As a result, there is no possibility that the pocket parts 71a are broken.
SHIBAGAKI MASAO
JPS5010270U | 1975-02-01 | |||
JPS554619A | 1980-01-14 |