Method of making pull tabs and lubricant therefor
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United States of America Patent
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Sep 16, 1997
Grant Date -
N/A
app pub date -
Apr 26, 1995
filing date -
Apr 26, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved process for making metallic pull tabs is provided. In accordance with the improved pull tab making process comprising the steps of feeding a strip of metal into a pull tab forming die and forming the metallic pull tab the step of forming the pull tab is carried out in the presence of an aqueous based lubricant composition comprising water, an alkaline pH producing substance selected from the group consisting of alkali metal hydroxides, water soluble or dispersible aliphatic amines and water soluble or dispersible hydroxyl substituted aliphatic amines, an emulsifier, a water soluble or dispersible alpha (p-nonylphenyl) omega hydroxypoly (oxyethylene) phosphate ester and a water soluble or dispersible aliphatic diol.
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