Method of making a vented pouch

  • US 5,147,272 A
  • Filed: 08/08/1991
  • Issued: 09/15/1992
  • Est. Priority Date: 04/27/1990
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of preparing pouch arrangements having:

  • first and second opposed panel sections, a bottom edge;

    a base gusset member;

    a rib and through closure arrangement; and

    , a gas filter oriented in one of the panel sections;

    said method including the steps of;

    (a) providing a continuous full web of panel section material;

    (b) splitting the full web into first and second continuous half webs of panel section material;

    (c) forming a continuous feed of pouch blank by;

    (i) directing the first and second continuous half webs into juxtaposed orientation with one another to form the continuous feed of pouch blank with;

    front and back faces; and

    , first and second, opposite, longitudinal side edges;

    (ii) orienting a first continuous base gusset between the first and second half webs along the first longitudinal side edge;

    (iii) orienting a second continuous base gusset between the first and second half webs along the second longitudinal side edge;

    (iv) orienting first and second continuous strips of rib and trough closure arrangement;

    (A) aligned substantially parallel to one anther and substantially parallel to the first and second longitudinal side edges; and

    (B) positioned between the first and second half webs and also between the first and second continuous base gussets;

    (d) dealing the continuous feed of pouch blank to form a plurality of sections therein comprising pouch arrangements joined to one another with;

    (i) a top end of each pouch arrangement joined to a top end of another pouch arrangement along a center line of the continuous feed, the center line being oriented between and substantially parallel to the first and second rib and through closure arrangements;

    (ii) a side edge of each pouch arrangement joined to a side edge of a next pouch arrangement; and

    (e) cutting the pouch blank into individual ones of the pouch arrangements;

    (f) said method being further characterized by steps of;

    (i) punching a plurality of pores in the first continuous half web such that pouch arrangements therefrom will each have a pore positioned a first distance from the rib and trough closure arrangement therein and toward the bottom edge thereof;

    said first distance being about 2% to about 30% of a distance between the rib and trough closure arrangement and the bottom end edge of the pouch arrangement; and

    (ii) orienting a gas filter arrangement over the pore in each pouch arrangement.

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