3M Saver Tape

LENS SURFACE SAVER TAPE 3M 1640 ( PART No 6090343 )A well-established high performance lens protecting tape, with liner offering new benefits for all those surfacig CR39, High Index, Polycarbornate and Glass lenses.3M 1640 tape is available in 3 type alloys temperature ranges for maximum efficiency.Features- Medium bond to alloy- Low deblock- Conformable- Clear- Easy removal from lens- Blue color for easy inspectionTechnical DataComposition:Tape Caliper4.5 mils +/- 0.5 mils (0.114mm +/-0.015mm)BackingPolyethylene filmAdhesiveAcrylate adhesiveRelease LinerSilicone coated paper linerTypical Product Properties:Adhesion25oz/inch (7.11 N/25mm) +/-10oz/inch (2.7N/25mm)Liner Release30gm/inch (30gm/25mm) MaximumRoll Description:Tape supplied on 3inch (76mm) coresLength50 yards (45.7m) +/-2% MaximumWidth4 inch (10.2cm) +/- 1/32 in (1.0mm)