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Process and apparatus for producing a laminated strip of a metal foil and a plastic film

  • US 5,656,110 A
  • Filed: 12/02/1994
  • Issued: 08/12/1997
  • Est. Priority Date: 12/02/1993
  • Status: Expired due to Term
First Claim
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1. A process for producing a laminate comprising a metal foil strip and a plastic film strip, in which each of the two strips has longitudinally spaced stamped structures which are repeated at regular intervals along the length thereof and wherein the stamped structures are disposed at contiguous points in the laminate, which process comprises the steps of:

  • (a) feeding a first one of said two strips in a feeding direction, said first strip having said stamped structures therein and further provided with spaced position markings each corresponding to one, or a transversely extending row, of said stamped structures;

    (b) feeding a second one of said two strips in said direction, said second strip having spaced position markings at positions corresponding to at least some of said position markings on said first strip;

    (c) merging the first strip and the second strip together so that one is on top of the other;

    (d) feeding the merged strips to a scanning apparatus to scan the position markings on the first and second strips one on top of another and place the position markings in coincidence;

    (e) with the merged strips having the position markings in coincidence, and prior to the merging of the second strip with the first strip, stamping the second strip with a stamping tool to provide stamped structures therein that are longitudinally spaced at intervals along the length thereof corresponding to those of the spaced structure of the first strip, said stamping tool being located in front of the scanning apparatus at a distance which is an integral multiple of the intervals of the stamped structures.

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