|Polyplast PY is a fast drying, high gloss ink designed for printing onto a wide range of flexible and rigid plastics. APR Varnish is a protective varnish for overprinting Polyplast PY and other suitable inks, where optimum chemical and mechanical resistance is required.
Certain plastics may be impregnated with lubricants which, like plasticiser migration, may impair adhesion and block resistance even a considerable period after printing. This can be overcome by wiping the surface with White Spirit before printing. Surface adhesive left from protective papers on rigid PVC and acrylic sheets should be thoroughly removed in line with supplier’s instructions.
Certain plastics can become brittle when printed, possibly to the point of shattering, often only after several weeks. It is therefore essential to check compatibility between ink and plastic to guard against this problem.
Polyplast PY inks may be used to produce double-sided stickers. Prior to such use please consult your Fujifilm supplier. Owing to the complex nature of this type of work printers must satisfy themselves, before starting a production run, that their substrate and production method are compatible with the ink. PY500 Obliterating Grey is recommended as the barrier coat between the first and the second side.
Accelerated weathering tests have been carried out on prints produced using Polyplast PY inks in a Marr Weatherometer on the BS 3900 F3 Cycle. Under these conditions Polyplast PY, with the exception of individual colours mentioned below, withstood 2000 hours (comparable to approx. 24 months outdoor exposure in the UK or similar climate) of testing before significant colour deterioration was evident.
Colour matches intended for outdoor use should not contain PY164 Seritone Red (BS), PY064 Light Yellow/Seritone Yellow (GS) or PY114 Deep Orange/Seritone Orange.