Package making – Closing packages and filled receptacles – By means adapted to engage outturned seam of package cover
Reexamination Certificate
2005-01-04
2005-01-04
Gerrity, Stephen F. (Department: 3721)
Package making
Closing packages and filled receptacles
By means adapted to engage outturned seam of package cover
C053S371200, C053SDIG002, C156S580100, C156S581000, C156S583100
Reexamination Certificate
active
06837025
ABSTRACT:
To provide a heat-sealing apparatus capable of achieving an excellent heat-sealing wherein no generation of defective sealing is found even when heat-sealing under severe conditions with a fluid, such as when filling/packing a vegetable juice abundant in water-insoluble vegetable fiber, without providing a ridge on the action face of a high-frequency coil. The high-frequency heat-sealing apparatus consists of a sealing jaw23provided with an openable-and-closable high-frequency coil22and an opposing jaw25provided with a sealing rubber24having a flat action face, which transversely heat-seals a tubular packing material with a fluid, wherein a groove26inscribed in the end portion on the container's interior side of the sealed zone where both right and left sides are rounded and narrowed, is extended, on the action face of the sealing jaw, over the whole area in the longitudinal direction along the container's interior side of the sealed zone, and a flash portion27for a molten resin is formed adjacent to the outer side on the cutting side of the high-frequency coil. The aforementioned groove26may be a groove wherein its width partially differs.
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Gerrity Stephen F.
Shikoku Kakoki Co. Ltd.
Westerman Hattori Daniels & Adrian LLP
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