Flat-Self-Opening Closure for Composite Packagings or for Container Nozzles or Bottle Necks to be Closed by Film Material
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United States of America Patent
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Issued Date -
May 8, 2008
app pub date -
Nov 4, 2005
filing date -
Nov 15, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A self-opening closure includes a pouring sport, a screw cap and a self-opening cylinder, which is disposed inside the pouring spout and can be set rotating by the screw cap. The self-opening cylinder) on its lower rim and protruding therefrom, are three combined piercing and cutting elements. The interior of the self-opening cylinder has three nail-type integrally molded elements, evenly distributed and extending toward the center of the cylinder, which have a nail shank and a nail head. The nail shank and the bottom side of the nail head of each element acts as a guide for one of the three cylinder wall segments located on the interior of the cap, concentrically to the axis of rotation of the cap. The screw cap, on its lower rim, is connected to a flat retaining element by at least two material bridges extending non-radially in relation thereto that are configured as predetermined breaking points. The retaining element can engage with a flange on the pouring spout, in a horizontal position, with pins.
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