Method for forming an insulating inner container

  • US 6,007,467 A
  • Filed: 05/08/1998
  • Issued: 12/28/1999
  • Est. Priority Date: 07/30/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of forming an insulating inner container having opposing side ends and a bottom from a flat sheet of flexible material having a metalized surface to be inserted into and closely follow the dimensions of a selected outer container having opposing side ends and a bottom from a flat sheet of flexible material having a metalized surface, comprising the steps of:

  • cutting the sheet of flexible material of the inner container to a rectangular configuration having first, second, third and fourth corners so that;

    a first dimension of the sheet is equal to or greater than the sum of twice the width of the bottom of the inner container and the height of each of the opposing sides of said inner container, anda second opposite dimension of the sheet taken perpendicular to the first dimension of the sheet, is greater than the length of the bottom of said inner container;

    folding said first corner inwardly over the remainder of the sheet to the mid-point of said first dimension of said sheet to form a first flap;

    folding said second corner inwardly over said sheet so that it meets said first corner at said mid-point of said first dimension to form a second flap that partially abuts said first flap;

    sealing said first flap to said second flap along the area where they abut to form a first gusseted pouch;

    manipulating an end of the first gusseted pouch to define a linear edge between a first of the side ends of the inner container and the bottom of the inner container;

    raising said first gusseted pouch at its center above said sheet until it is substantially perpendicular to said sheet and a portion of said first gusseted pouch forms said first of the side ends of said inner container;

    folding said third corner inwardly over the sheet to said mid-point of said first dimension of said sheet to form a third flap;

    folding said fourth corner inwardly over the sheet so that it meets said third corner at said mid-point of said first dimension to form a fourth flap that partially abuts said third flap;

    sealing said third flap to said fourth flap where they abut to form a second gusseted pouch; and

    manipulating an end of the second gusseted pouch to define another linear edge between a second of the side ends of the inner container and the bottom of the inner container;

    raising said second gusseted pouch at its center until it is substantially perpendicular to said sheet and a portion of said second gusseted pouch forms said second of the side ends of said inner container and the remainder of said second gusseted pouch forms a portion of opposing sides of said inner container, said opposing sides being substantially perpendicular to said side ends.

View all claims
    ×
    ×

    Thank you for your feedback

    ×
    ×