Heat-sealing apparatus
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United States of America Patent
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N/A
Issued Date -
Jun 19, 2008
app pub date -
Nov 14, 2007
filing date -
Dec 19, 2006
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A heat-sealing apparatus comprising a pair of opposed hot plates and a pair of hot plate-mounting blocks to which said hot plates are mounted, respectively. The hot plates respectively have pressing surfaces adapted to be pressed against each other with superimposed film sheets held therebetween during sealing; and mounting surfaces formed at opposite sides to said pressing surfaces. The hot plate-mounting blocks respectively have support surfaces. The hot plates are mounted to said hot plate-mounting blocks in such a manner that the mounting surfaces are pressed against the support surfaces, and that the hot plates can thermally expand and contract in a sealing direction without being restrained by said hot plate-mounting blocks. In another aspect of the invention, the mounting surfaces are formed on respective surfaces extending substantially perpendicular to the pressing surfaces and the hot plates are mounted on respective support surfaces formed on the hot plate-mounting blocks.
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