Apparatus and method for producing fluid-containing envelopes
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United States of America Patent
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-
Aug 9, 1994
Grant Date -
N/A
app pub date -
Oct 21, 1992
filing date -
Oct 21, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for forming fluid-containing envelopes from two superimposed layers of enclosure material, defining a workpiece, by transporting the workpiece on a support to a plurality of processing stations. One of the processing stations forms at least a portion of the perimeter of each envelope to be formed from the workpiece by appropriately sealing the two layers together in a predefined pattern. At least one inlet coinciding with an unsealed portion of the layers is provided for each such envelope such that an appropriate fluid may be provided thereto when the workpiece is positioned at another processing station. Advantageously, the workpiece is maintained in a certain position on/relative to the support when provided to the envelope filling/forming station and other processing stations which may be incorporated (e.g., secondary sealing station, die cutting station). As a result, the potential for production of defective envelopes which would have to be scrapped is reduced since the alignment of the workpiece relative to such processing stations is maintained within a certain tolerance.
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Family
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