| 摘要 |
Laminates consisting of a metal foil (2) having an uncoated surface which has been directly heat sealed to the surface (4) of a polymeric web (1) by an outer surface (4) of the web, the outer surface (4) of the web (1) consisting of a blend of an ethylene/vinyl acetate copolymer and an additive which embrittles the copolymer at room temperature. Packages produced by directly heat sealing metal foils (2), preferably aluminum foil, to polymeric webs (1) having the specified outer surface have exhibited peel strengths, for example in the range of from 2 to 6N/15 mm, which enable press through packages to be produced which do not peel open when tablets are pushed through them but will peel when in the form of pouches.
|
