A method and equipment for manufacturing plastic cards, for example, credit cards and the like from a continuous layup including generally two plastic cover leaves and a printed insert. The plastic leaves to be heat sealed are fed through a plurality of press zones in which the lay-up is heated and subsequently...http://www.google.com.au/patents/US4863546?utm_source=gb-gplus-sharePatent US4863546 - Apparatus and method for manufacturing plastic cards
