The only recommended application tape for use with Oracal 631 is the Oracal HT55. ORATAPE® Series HT55 Decorative Film Application Tape is optimized to provide trouble-free pre-masking and graphic application with plotter films that use silicone-coated release liners such as ORACAL® 631 Exhibition Cal, ORACAL® 8810 Frosted Glass Cast and ORACAL® 8510 Translucent Etched Glass Cal. The semi-transparent face film and special high-tack adhesive used in ORATAPE HT55 enable the production of pre-masked lettering and graphics that can be rolled, stacked and shipped without wrinkling, edge curling or tunneling. Use of Rtape AT60 (or any medium tack application tape) is strongly discouraged as it is not intended for matte finish materials.
Been using ClearChoice AT65 high tack for several years now with 631 vinyl and have not had any problems. It picks up letters well and works well for customers. I roll up my designs and mail in a 4" tube and do not get customer complaints about the product and the transfer process. I had tried several transfer tapes prior and had problems and some unhappy customers.
Now I need to order my 4th roll of the tape and have been reading reports of problems lifting letters off the backer and releasing on transfer to a surface. What in the world has happened to this product in the last year or two? I thought it was a great product......Now I wonder.
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