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Accessories
Wash-up units
Washing up your printing machine is never pleasant but with the TECA PRINT WG 701 wash up unit
the procedure is clean and virtually odour free.
Parts are washed in a sealed chamber with isolation gloves mounted
in the side of the unit. A recirculating pump keeps the solvent
flowing through a brush head for ease of thinners application and
removal of ink residue. For more information on this easy to use
set-up call Handel for a brochure.
Pre-Treatment
Requirements
Pre-treatment products and test kits
Not all surfaces to be printed can be printed in their natural
state. They frequently require pre-treatment of one sort or
another. Of the plastics, polyolefins are the most difficult to
print. HANDEL can supply you with the three main types of
pre-treatment required for polyolefin printing. These are:
* Chemical pre-treatment
* Flame pre-treatment, or
* Corona pre-treatment
Corona pre-treatment is primarily used in on-line applications,
such as film printing or conveyor printing applications, such as
ampoules or electrical components.
Flame pre-treatment can be done either as a continuous process on a
conveyor or as an intermittent process using a TECA-PRINT flaming unit.
For use on polypropylene where neither of these treatments is
available, a chemical pre-treatment process can be supplied.
With any pre-treatment process, it is important that several
variables are correctly monitored. These are different for each
type of pre-treatment process. To ensure that your pre-treatment
has been successful, HANDEL supplies a range of test inks in the
form of pens and also as bottled solutions. With these you can
determine the surface tension characteristics of your pre-treated
plastic surface. By testing your surface to be at the correct level
stipulated for the substrate and ink, you can be confident of a
print that will adhere well. For a small fee HANDEL can test your
product in-house to determine pre-treatment requirements.
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