US20020184858A1

Methods of making slide-zippered reclosable packages on horizontal form-fill-seal machines

Claim Score by NHIP

Read claim 19, the broadest

Abstract

Methods of making slide-zippered reclosable packages are provided. In one embodiment, a pair of opposing film extensions are provided on each package between which a zipper and slider are attached. In another embodiment, sliders are inserted on to zippered packages output from a form-fill-seal machine or the like. In yet another embodiment, during package formation a reclosable zipper is sealed to each package and then a slider is inserted on to the zipper. In yet another embodiment, during package formation a reclosable zipper is sealed to each package and a slider is inserted on to each zipper, either before or after zipper sealing. In a still further embodiment, a first flange of the zipper sealed adjacent to a machine direction center line of the package film, the film is folded about said machine direction center line to form a fold and a second flange of the zipper is sealed to the folded over portion of the film.

US20020184858A1, drawing sheet 1
Sheet 1 of 14

Term

Term ended

Projected expiry passed 21 May 2019, 7.3 years ago.

  1. Priority
  2. Filed
  3. Published
  4. Projected expiry
  5. Today

22 claims: 3 independent, 19 dependent

  1. 1
    A method of making reclosable packages, said method comprising the steps of:feeding a supply of package film in a package forming direction;folding said package film about a bottom fold to form opposing package walls, said opposing package walls advancing in said package forming direction;feeding a supply of interlocked reclosable zipper between said opposing package walls, said interlocked reclosable zipper including mounted sliders, each of said mounted sliders being adapted to open and close said reclosable zipper as said slider is moved along said reclosable zipper in opening and closing directions, respectively;sealing said reclosable zipper to said opposing package walls adjacent to said bottom fold;and cross-sealing said folded film at package-width intervals to form a chain of packages, each of said packages having a reclosable zipper and a slider.
  2. 14
    A method of making reclosable packages, said method comprising the steps of:feeding a supply of package film in a package forming direction;sealing a first portion of a reclosable zipper on said package film adjacent to a first side of a central machine direction position;folding said package film about said central machine direction position to form opposing package walls;and sealing a second portion of said reclosable zipper to said package film adjacent to a second side of said central machine direction position.
  3. 19
    Broadest claimClaim Score 87, broad(NHIP)A method of making reclosable packages, said method comprising the steps of:feeding a supply of package film in a package forming direction, said packaging film including first and second portions for defining first and second opposing package walls;