|Polydyne YD is
an ink with excellent adhesion to untreated and pre-treated
polypropylene and polyethylene sheets and injection mouldings.
Certain grades may be impregnated with lubricants or
mould release agents which, through migration, may impair adhesion even a
considerable period after printing. It is essential to check
compatibility between ink and plastic to guard against any possible
problems. Polydyne YD is not recommended for use on either untreated or
pre-treated blow moulded flexible and semi-rigid containers such as
washing up liquid bottles.
Polydyne YD inks have resistance to a number of household and
industrial products, including battery acid, bleach, washing up liquid,
sodium hydroxide and motor oils. However, before commencing production
it is recommended that inks are tested in conjunction with any chemical
with which they are likely to come into contact. Polydyne YD may be used
on polypropylene binders. However, for this and other applications
which are subjected to frequent handling the inks should be
overvarnished with YD381 Extender Base to avoid smearing of colour.
Polydyne inks are not recommended for outdoor exposure applications.
The Seritone Matching System
The standard range of Polydyne YD shades consists of the Seritone
Matching System which enables printers to readily match special
colours. This system consists of 9 base colours, each selected for its
cleanliness of tone and suitability for intermixing. Using the Seritone
base colours plus Black, White and Extender Base, almost any colour can
be produced. The Seritone bases can be used as printing colours but
because of the required cleanliness of tone these colours, though
strong, are in some cases relatively transparent.