The temperature and running speed necessary to achieve a successful transfer of the Black/White coating onto the print will vary with combination of vinyl, ink and laminator.
Substrate Material & Ink
Contra Vision TT is a resin thermal transfer ink that is designed to bond to PVC substrates and eco-sol or solvent based inkjet inks. To properly mount your perforated graphic on the inside of a window, you will need to find a source for Clear Perforated PVC Vinyl. We recommend our own ZeroNine brand as it is an ideal 60/40 perforation for archtectual signage and has been tested extensively with Contra Vision TT.
Determining Good Transfer
A trial to establish the best settings for each vinyl/ink/laminator combination is strongly recommended. These settings can then be used whenever this combination is used in the future.
The trial print needs to be carefully checked to ensure that the black/white Contra Vision® TT™ coating has successfully transferred. First, when removing the carrier, check that there is no coating left where it should have transferred onto the print. Where the coating has transferred, the carrier will appear clear and where it didn't transfer, it will still be on the liner. Second, use a piece of adhesive masking tape to attempt to remove the coating from the print, thus checking the adhesion of the coating to the print.
The top roll needs to be heated to a temperature between 225-250°F. Initial recommended running speed is 18 inches/minute. Higher speeds are possible dependant on the laminator model, brand of ink, settings and vinyl. Pressure/nip gap should be slightly higher/narrower than for laminating self adhesive vinyl, typical 420kPA or 60psi.
A back-brake can be applied to eliminate any wrinkles. The carrier is not prone to stretching.
Ensure that the print is free from dust and is not contaminated. Oils and sweat from hands can interfere with coating adhesion. We recommend using cotton gloves when handling your print before installing Contra Vision® TT™
It is recommended that the print is dry before Contra Vision® TT™ is applied. However, solvents from the print can 'pass-through' the coating, enabling the coating to be applied before the print is completely cured.
During operation, if the Contra Vision TT is not transferring completely onto all areas of the print a lower running speed and/or a higher roller temperature will generally solve the problem. If the Contra Vision is transferring to much and filling in the perforated holes, then we advise you lower the laminating temperature and/or increasing the running speed.