Method of making a component consisting of a support and a membrane welded thereto, in particular a plug for a straw, and membrane-support
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United States of America Patent
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-
Jul 9, 2002
Grant Date -
N/A
app pub date -
Oct 14, 1999
filing date -
Oct 15, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method is disclosed of making a component consisting of a substantially cylindrical support through which there is a substantially coaxial orifice and a membrane welded to one end of the cylinder substantially perpendicularly to a longitudinal axis of the support. A substantially plane membrane is welded to one end of a support substantially perpendicularly to a longitudinal axis of the support and, after cooling, the support is torn off the membrane in a direction substantially perpendicular to the plane of the membrane so that a portion of the membrane substantially corresponding to the end of the cylinder remains welded to the support. The method can be applied to making two-part stoppers for straws, in which case the membrane is microporous, hydrophobic, impervious to liquids and permeable to gases and the support is an insert made from a material chosen from an elastomer material, a thermoplastics material and a thermoplastics elastomer material.
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