PROTECTION DEVICE FOR TRANSPARENCIES FOR OVERHEAD PROJECTORS

摘要

A transparency protection device (10) for protecting a transparency sheet, the protection device including a protective sheet (12) and a presentation flap (14) generally coupled to the protective sheet (12). The protective sheet (12) includes a generally transparent film having a first major surface and a second major surface, the first surface positioned to be in contact with the transparency sheet. At least a portion of the first major surface includes a plurality of integral micromounds protruding from the major surface. The protective sheet (12) is micro-textured bi-axially oriented polypropylene having a micromound density in the range of 100 to 300 micromounds per square millimeter, the micromounds have a major axis length of 20 to 60 microns.