Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With gas – vapor – or flame contact means for work
Patent
1989-04-14
1990-07-31
Woodard, Joye L.
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With gas, vapor, or flame contact means for work
156320, 156499, 156566, 156DIG26, 156DIG28, 156DIG36, B65C 925
Patent
active
049448293
ABSTRACT:
A wrapper to be wrapped around a stack of disc-like tablets includes a portion carrying a layer of heat-activatable adhesive, which is activated just prior to wrapping the wrapper around the stack to secure it in position on the stack. The heat activation is provided by a short, hot blast of air directed onto a surface of the wrapper opposite that on which the heat-activatable layer is located, whereby the applied heat must travel through a portion of the wrapper to reach the adhesive layer and activate it. The air blast is heated by heaters which include elongated heat exchangers having rectangular grooves or slots extending along the length of their outer surfaces, through which grooves the air blast is constrained to travel for efficient, rapid heating.
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Corrado James
Tuttle Kenneth A.
Rorer Pharmaceutical Corporation
Woodard Joye L.
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