Patents Assigned to Azionaria Costruzioni Automatiche A.C.M.A. S.P.A.
  • Method and apparatus for securing the facially confronting opposite edge margins of a folded-to-tubular product wrapper of heat-sealable film material
    Patent number: 5680747
    Abstract: In a packaging machine through which products are advanced singly and in succession along a wrapping line together with a heat-sealable wrapping film, the film is folded around each product to form a wrapper of tubular appearance with two facially confronting longitudinal edge margins, whereupon the temperature of the edge margins is raised by electromagnetic induction to soften the material in readiness for heat-sealing. The pressure required to fuse the heated confronting edge margins together is applied evenly from two opposite sides.
    Type: Grant
    Filed: March 8, 1996
    Date of Patent: October 28, 1997
    Assignee: Azionaria Costruzioni Automatiche A.C.M.A. S.P.A.
    Inventors: Mario Spatafora, Andrea Berti