Tear-Open, Reclosable Package

a package and opening technology, applied in the field of flexible packaging, can solve the problems of package tamper-evident and inability to register the opposing lateral edges upon reclosing,

Inactive Publication Date: 2019-03-07
SEALSTRIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The invention is about a new design for a package with recloseable features. The package has special cuts that are curved and designed to transfer forces to the frangible areas between the cuts, preventing uncontrollable tearing. This design allows for easy and inexpensive manufacturing, using light weight materials coated with adhesive. The technical effect is a more robust and reliable package design with improved durability and sealing capabilities.

Problems solved by technology

This tearing distorts the packaging film so that re-registration of the opposing lateral edges upon reclosing is not possible.
This results in a package which is tamper-evident.

Method used

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  • Tear-Open, Reclosable Package
  • Tear-Open, Reclosable Package
  • Tear-Open, Reclosable Package

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025]Referring now to FIG. 3, a pre-construction layout of the elements of one embodiment of the invention is shown. Film 31 has a piece of transparent pressure sensitive adhesive reseal structure 33 affixed across it. The adhesive structure includes a pull tab 35 projects upward from the main body of the pressure sensitive reclosure feature. The adhesive on the backside of the pull tab 35 is deadened so that it may be easily grasped by the user. The pressure sensitive adhesive reseal structure 33 extends laterally beyond fold lines 36 which define the sides of the package when constructed so that end portions 34 of the adhesive reseal structure 33 wrap around the sides of the package and the side of the structure which is coated with a pressure sensitive adhesive attach to the back when fully formed for stronger attachment. The structure may be a label or a tape composed of a polymeric backing and a pressure sensitive adhesive on either side of the backing.

[0026]Beneath the adhesi...

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Abstract

A tamper-evident package utilizes a transparent resealable adhesive structure such as a tape or a label to cover the closure opening. Upon a first opening of the package frangible portions of the package front between adjacent disconnected arcuate cuts are torn. This results in a package which is visually tamper-evident after a first opening. A series of disconnected arcuate cuts comprising an apex and two free ends are arranged in laterally extending opposing top and bottom rows. In one case the cuts have portions of their distal free ends which overlap vertically and are parallel and aligned with the longitudinal axis of the package. The cuts are preferably centered laterally and are flanked on the right and left sides by two continuous wavy slits. One row of the cuts can comprise cup shaped cuts with a flat linear portion of each cut lying along its apex.

Description

RELATED APPLICATIONS[0001]This patent application is a continuation-in-part of patent application Ser. No. 15 / 696,492 filed Sep. 6, 2017 entitled, “Tamper-Evident Tear-Open Reclosable Package”, priority from which is hereby claimed, and which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to flexible packaging. More specifically it relates to tear-open bags or pouches which have tamper-evident resealable closures.BACKGROUND OF THE INVENTION[0003]Most often consumer food packages are made in such a way that for the consumer to access the product a tear strip at the top of the pack above the usual zipper or slider has to be torn off and thrown away. Because of the way these packages are made the bag material often tears unreliably and not straight. Sometimes it only tears part of the way and the leftover edges of film get in the way of the zipper or slider reclosing easily. Furthermore, consumers prefer not to be left holding a part of th...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D33/20B65D75/70B65D75/58
CPCB65D33/20B65D75/70B65D75/5855B65D2517/0013B65D75/40B65D75/5827B65D2575/586
Inventor FORMAN, JOSEPHINE ANNECONRAD, RACHELCORCORAN, JOSEPHGRETH, JACOBOBERHOLTZER, LISANEDWICK, PAUL
Owner SEALSTRIP
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