Packaging strap coil and method for producing the same, packaging strap coil unit and packaging machine equipped with strap coil reel
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United States of America Patent
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Mar 19, 2002
Grant Date -
N/A
app pub date -
Jul 27, 1999
filing date -
Aug 7, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to: a packaging strap coil and its production method, wherein the innermost strap end is securely fixed to prevent un-winding thereof and the strap can be smoothly drawn out to the innermost end for strap-packaging of an item; a packaging strap coil unit which prevents deformation of the strap coil; and a packaging machine. The strap coil 11 comprises a number of layers of a resin packaging strap 11a wound helically and carelessly around a hollow 11b defining the axis of the strap coil 11. The strap 11a is made of a thermoplastic resin at least on its external surface. In the strap coil 11, a plurality of perforations 11d are pierced in the vicinity of an innermost end of the strap 11a through to a plurality of laminated layers. Each perforation 11d provides a melt-bonded area 11e along its periphery to bond the laminated layers of the strap 11a together.
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