J-LAR is a polypropylene clear-to-the-core tape, commonly used to tape together lighting gels without altering the properties of the gel being taped.
All Pro Tapes & Specialties Products
JLAR Clear tape 1 X 72 Yard - Rosenthal Collection
JVCC BOOK-20CC Crystal Clear Book Repair Tape @ FindTape
Clear Self Adhesive Polyester Tape - Preservation Equipment Ltd
Shurtape J-LAR/CLR172 JLAR to the Core Tape (Permacel
Shurtape JLAR Clear to the Core Tape: 2 in x 72 yds. (Clear
Shurtape JLAR Clear to the Core Tape [Permacel J-LAR]
Shurtape 1.88 X 10.9 Yd Sf 685 Butyl-Rubber Foil Tape
Shurtape 2 J-LAR Adhesive Tape - Clear 12-0115 - Filmtools
GGR Supplies T.R.U. LP-20CC Book Repair Crystal Clear