×

METHOD FOR MAKING POUCHES

  • US 20160221702A1
  • Filed: 01/29/2015
  • Published: 08/04/2016
  • Est. Priority Date: 01/29/2015
  • Status: Active Grant
First Claim
Patent Images

1. A method for making pouches comprising:

  • providing a continuous web;

    folding the web to provide confronting side surfaces joined along a bottom edge;

    forming a vertical seal between the confronting side surfaces, thereby providing a series of adjacent pockets having opposite side walls with each pocket having an unsealed opening along a top edge;

    filling the pockets through the unsealed opening with material; and

    sealing the unsealed opening, wherein the web is perforated by a perforation between a leading length piece of the web adapted to form a leading pocket and a trailing length piece of the web adapted to form a trailing pocket,wherein the continuous web is abutted against an outer circumference of a rotating filler wheel to follow a circular path and wherein a distance between a trailing edge of the leading length piece and a leading edge of a trailing length piece is increased for tearing the leading and the trailing lengths pieces apart at the perforation while the length pieces are moved on the circular path.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×