Tamper evident thermoformed containers

a thermoformed container and evidence technology, applied in the field of plastic containers, can solve the problem of greater tampering

Inactive Publication Date: 2007-03-01
BARS INNOVATIONS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of the possibility of tampering with the contents of plastic trays of this type, they are typically not used for packaging food or similar items by large scale manufacturers because the items pass through many hands in the distribution chain and the potential for tampering is greater.

Method used

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  • Tamper evident thermoformed containers
  • Tamper evident thermoformed containers
  • Tamper evident thermoformed containers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A general description of performance of the tray is as follows. In order to seal and protect the tray contents, the container is closed to engage the peripheral re-closable seal between the top and bottom portions. Likewise, the male (e.g., top) and female (e.g., bottom) locks are snapped together. Lock engagement is permanent, such that the male part cannot be removed from the female part without either destroying them or altering them so that they cannot re-lock. Once the locks are closed, any force applied to open the container will partially or completely break one or more perforation lines, thus providing clear tamper evidence.

[0022] The perforations must be broken to access the contents of the container. The perforation lines can be separated by simply pulling the cover away from the base or by bending and then ripping along the perforation lines, for example. In order to ease the task of separating the locks and / or breaking the perforation lines, one or more flaps may...

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Abstract

A container comprises a tray body having a top lid portion and a bottom portion. The top lid portion and bottom portion form a re-closable seal around their periphery. A top tab extends from the top lid portion. A bottom tab extends from the bottom portion. A locking mechanism is formed in the top and bottom tabs for substantially permanent engagement. A perforation line in at least one of the top and bottom tabs isolates the locking mechanism, whereby the perforation line must be broken when gaining access inside the tray body.

Description

BACKGROUND OF THE INVENTION [0001] The present invention relates in general to plastic containers and, more particularly, to improving the tamper evidence of plastic containers having a resealable lid or cover. [0002] Resealable plastic containers are well known in the art. See, for example, U.S. Pat. No. 5,339,973, to Edwards et al, and U.S. Pat. No. 5,413,239, to Rider, Jr. These containers are most typically used for packaging perishable items (e.g., foods) and other items being packaged on a small scale and / or close to the point of sale (e.g., a grocery store). Containers may be two-piece with a bottom tray and a top tray or lid, or may be one-piece with a hinge connecting the tray and lid. Transparent plastics such as PET or PLA are commonly used, and the containers are typically made by thermoforming in a mold. [0003] Because of the possibility of tampering with the contents of plastic trays of this type, they are typically not used for packaging food or similar items by large...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B65D41/32B65D43/14B65D41/18B65D6/28
CPCB65D43/0249B65D43/0254B65D43/162B65D2101/0023B65D2543/00101B65D2543/00296B65D2543/00842B65D2543/00537B65D2543/00555B65D2543/0062B65D2543/00685B65D2543/00731B65D2543/00796B65D2543/00509B65D2401/15
Inventor ROSENDER, ADAM KEITHMEIER, CHRISTOPHER JAMES
Owner BARS INNOVATIONS
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