Heat-shrunk protective packaging for multiple units
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United States of America Patent
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Sep 17, 1991
Grant Date -
N/A
app pub date -
Apr 23, 1990
filing date -
Apr 23, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A number of inner packages are formed into a unit and wrapped in an outer package. The combination of the inner and outer packages allows the package to hold its shape after the outer package is opened. The outer package is formed by wrapping the inner package unit in a tubular outer wrap, and sealing the top and bottom surfaces. The outer wrap, or at least the material for the top and bottom panels of the outer package, is made of a contractible or heat shrinkable flexible plastic film which is contracted or heat shrunk to maintain and hold the inner package unit in a tightly packed condition. Deformation of the outer package is more effectively prevented and makes the outer package easy to handle. An opening in the outer package is formed by perforation lines in two side panels and a top or bottom panel. The perforation lines may extend the entire height of the outer package. The panel sections between these perforation lines form dust flaps after opening. The outer package is opened and the inner packages are removed individually.
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