Apparatus for sealing a cover foil to a blister foil

Details Apparatus for sealing a cover foil to a blister foil Apparatus for sealing a cover foil to a blister foil

2006-07-07

2008-11-11

Durand, Paul R. (Department: 3721)

Package making

Closing packages and filled receptacles

Separate closure applying

C053S051000, C053S477000, C053S559000

Reexamination Certificate

active

07448183

ABSTRACT:
A pocket roll centered on and rotatable about a respective axis has an outer surface formed with an array of open pockets separated by directed lands. The pocket-roll outer surface has a predetermined coefficient of friction. A blister foil is fed to the pocket roll with blisters of the blister foil fitting in the pockets. A seal roll rotatable about a respective axis adjacent the pocket roll has an outer surface pressing a cover foil against the blister foil so that the foils are pinched between the rolls. Slip inserts set in at least some of the lands, extend axially of the pocket-roll axis and form in the respective lands axially extending outer-surface regions having coefficients of friction smaller than the coefficient of friction of the pocket-roll outer surface. A position-correcting unit has a sensor and detects and adjusts the positions of the blisters relative to the direction.

REFERENCES:
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patent: 4750318 (1988-06-01), Matsuzawa
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patent: 103 47 777 (2004-12-01), None
patent: 102 004 010202 (2005-03-01), None

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