Ultra-flexible retroreflective cube corner composite sheetings and methods of manufacture
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United States of America Patent
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Nov 25, 1997
Grant Date -
N/A
app pub date -
Jun 7, 1995
filing date -
Oct 20, 1993
priority date (Note) -
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Abstract
A method for manufacturing flexible cube corner retroreflective sheeting comprising the steps of: a) providing a tool having a molding surface; b) applying to the molding surface a volume of a flowable resin composition; c) contacting the resin composition with a first major surface of an overlay film; d) minimizing excess resin composition; e) curing the resin composition to form a sheeting comprising an array of cube corner elements bonded to the overlay film; f) removing the sheeting from the tool; and g) applying mechanical stress to the sheeting so as to cause a fractured separation of substantially each individual cube corner element from surrounding cube corner elements. Also, flexible retroreflective sheetings comprising: a) a two dimensional array of substantially independent cube corner elements, the array comprising a first polymeric material, and b) an overlay film having two major surfaces and comprising of a second polymeric material, the array being bonded to the first major surface of the overlay film. Also safety devices incorporating such sheetings.
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