 The
Selectasine Screen Printing System
The selectasine sceen printing system is simple, economic and flexible
in use. It produces a soft finish and has outstanding fastness. Although
designed for screen printing, it can also be brushed, sprayed and blocked.
There are two standard binders for general printing onto light fabrics
and 5 special effect binders, each fulfilling a specific function. These
binders can be intermixed to create variations on the results.
The binders are combined with concentrated colours to create the screen
printing ink.
Method for Mixing the Ink
- Estimate the amount of binder you require. 1kg of Standard Binder
will cover approximately 2.8m/30 sq.ft. of print area, but some fabrics
are more absorbent than others.
- Carefully add the colour to give the strength of colour required.
The colours are highly concentrated and should be used at a rate of
up to 50 grams per kilo of Binder. In practice, an average of 35 grams
will give full shade, except for Black, which may require 50 grams (Luminous
Colours should be used at a rate of 80-120 grams per kg). Do not overload
the Binder with colour as surplus will be left on the surface of the
material and come out and discolour the water in the first washing.
- When the prints are dry, the pattern will need fixing by the application
of heat. Heat speeds up and completes a chemical "cross-linking"
reaction. Generally, fixing will be completed at 140 degrees centigrade
for 4 minutes. In some cases, the temperature can be increased, thus
proportionally reducing the time, but consideration must be given to
the nature of the fabric and the amount of pigment used. A thorough
ironing may achieve reasonably fixing.
- SCREENS SHOULD BE THOROUGHLY CLEANED AFTER USE. Clean out all the
ink debris using a nail brush with a little washing up liquid and plenty
of water. If screens are stored with Binder still left in the mesh,
they will become permanently blocked.
- Most fabrics are readily printable, but some may have received special
treatment which makes them unsuitable. It is recommended that a sample
is printed and tested for fastness before the whole batch is printed.
Check whether the fabric is 'Prepared for Dyeing' (PFD) or requires
scouring to remove any grease, oil or starch. Run a few droplets of
cold water onto the fabric. If they soak in quickly, no scour is necessary.
To remove starches, size and oils, add 5mls of Synthrapol (a non-ionic
detergent) along with 2-3 litres of water for each 100gms of material.
Stir gently over a 15 min period, and then rinse thoroughly in warm
water. It is possible to use household detergent, but the alkaline residue
may affect the final colour or wash fastness.
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To contact
us: tel: 0 (+44) 1483 565800 · fax: 0 (+44) 1483 565807 ·
email: esales@georgeweil.com
The George Weil Group comprises a vast selection of quality craft materials
and equipment brought together in three web sites at:
www.fibrecrafts.com, www.papershed.com
and www.polymerclaypit.co.uk
George Weil & Sons is a limited company registered in England
and Wales.
Registered number: 00321890. Registered office: Old Portsmouth Road, Peasmarsh,
Guildford, GU3 1LZ
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