Method and apparatus for forming and hermetically sealing slices of food items

  • US 6,058,680 A
  • Filed: 12/29/1997
  • Issued: 05/09/2000
  • Est. Priority Date: 06/05/1989
  • Status: Expired due to Term
First Claim
Patent Images

1. A process for producing individually wrapped slices of processed cheese, comprising the steps of:

  • continuously advancing a web comprised of a polypropylene thermoplastic material having a sealant layer;

    forming the polypropylene web into a tubular web;

    applying heat to the polypropylene thermoplastic material to form a longitudinal hermetic seal along the length of the tubular web;

    inserting the processed cheese in a hot molten condition into the tubular web;

    forming the cheese-filled tubular web into a generally slice-shaped cheese-filled web;

    applying pressure at spaced intervals to opposite sides of the slice-shaped cheese-filled web to form a plurality of cross-sealing zones having substantially all of the cheese removed therefrom;

    heating the cross-sealing zones to a temperature and for a time sufficient to form hermetic cross-seals;

    whereby a plurality of hermetically sealed individually wrapped slices of cheese are produced, and the longitudinal seal and the cross-seals are peelable without delamination.

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