Mold for producing glittering cube-corner retroreflective sheeti

Details Mold for producing glittering cube-corner retroreflective sheeti Mold for producing glittering cube-corner retroreflective sheeti

1996-04-30

1998-09-29

Ryan, Patrick

Plastic article or earthenware shaping or treating: apparatus

Press forming means, press reshaping means, or vulcanizing...

Roll and coacting endless belt press member

264 16, 264 19, 264 27, 425385, 359529, 359530, B29D 1100

Patent

active

058143556

ABSTRACT:
A mold 79 that includes an array of cube-corner elements 80 that are arranged in the array such that a retroreflective cube-corner sheeting 60 that is formed thereon is capable of glittering when light is incident on the sheeting. The array may be defined by three sets of intersecting grooves 25, 26, 27 where each groove set includes two or more generally parallel grooves. At least one groove in at least one of the sets has faces 22 of adjacent cube-corner elements 30a, 30b arranged such that a dihedral angle .alpha. located between adjacent faces varies along the groove(s) in the set.

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3M Information Folder 1.1 "Scotchlite.TM. Heat-Lamp Vacuum Applicator", May 1992, (75-0299-8918-5 PRF 223).
3M Information Folder 1.2 "Application of Scotchlite.TM. Reflective Sheeting High Intensity Grade", Aug. 1992, (75-0299-8919-3).

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