B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
18/1064, 18/1078
B29C 51/14 (2006.01) B29C 51/42 (2006.01) B29C 51/44 (2006.01)
Patent
CA 1247320
ABSTRACT OF THE DISCLOSURE In order to achieve in multilayer foils a speedy and uniform heating without unduly influencing temperature-sensitve inner layers the heating proceeds in two steps. The first step is made in a contact heating apparatus and the second in a radiation heating apparatus. The punching out of the articles shaped in a forming station proceeds also in two steps. Initially a pre- punching apparatus produces a pre-punching leaving pre- determined breaking lines. In a following periphery punching apparatus the articles are firstly centered and thereafter punched to their definite shape. This allows that during the punching any mistakes due to the shrinking of the foil having cooled can be decreased or even eliminated. The transport of the web through the entire apparatus proceeds by means of a plurality of driving wheels located at both sides of the web feeding path.
464845
Covelli Bruno
Mutti Werner H.
Marks & Clerk
Servichem Ag
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