Method and apparatus for preforming and applying a heat-shrinkable member to a container
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United States of America Patent
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Jan 28, 1986
Grant Date -
N/A
app pub date -
May 27, 1983
filing date -
May 27, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and apparatus are disclosed for preforming a heat-shrinkable member to a pre-selected configuration which may at least partially conform to a container to which the member is to be applied. The preformed member is subsequently applied to the container so that the member is retained in association therewith, such as for tamper-indication. The heat-shrinkable member is initially preformed by the use of a preforming mandrel which may be at least partially configured like the configuration of the container. After the member has been heat-shrunk on the preforming mandrel, it is positioned in association with the container, and thereafter heated so as to further conform the heat-shrinkable member to the configuration of the container. By this technique, hightly desirable control of the heat-shrinking process is achieved, thus assuring proper conformance of the heat-shrinkable member to its associated container. A further feature of the invention relates to final application of the preformed heat-shrinkable member by localized heating of the member, which desirably minimizes heating of the associated container and its contents.
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