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Silk SCREEN INK
Derivan silk Screen Ink is a totally water-based screen printing ink.
Derivan Screen Ink has been formulated as a safe, non-toxic silk screen printing ink for fabric and can also be used for tie-dyeing. It can be used in the classroom or at home safely without the worry of being exposed to harmful solvents such as white spirits, turps or thinners. Derivan Screen Ink is water-based and washes up in water (before it is heat set) but has excellent rub resistance and lightfastness once heat set.
HOW TO uSE SILK SCREEN INK
Tools for silkscreen printing
screen printing ink
Removing the size!
For best results, you will need to wash the fabric before printing as this will make sure there is no problem with of the ink to the fabric.
All the colours may be intermixed to form bright secondary and tertiary colours. White (Opaque) may be mixed if pale pastel opaque prints are desired on dark coloured fabrics.
Making Transparent Shades
with Screen Reducer
Derivan Screen Reducer is a thick milky coloured paste which dries colourless and transparent. It is used for intermixing with standard printing colours to extend deep colours into pale or lighter translucent shades (Red into transparent pink, etc.). Mainly for White or pale fabrics.
Choice of Fabrics
Best results are obtained from absorbent fabrics; avoid waterproof materials as they tend to inhibit penetration and repel the water-based colours. Fabrics containing starch, size, fillers, softeners or crease-proof treatments should be washed prior to printing. Materials containing waterproofing treatments may not accept the paints and may result in mottling, poor colour adhesion or patchy printing and may not remain wash proof.
Wash all utensils, brushes and hands with soap and water to clean up.
Generally speaking, the best mesh size for fabric printing is 43T (monofilament). A coarser mesh screen is required for fabric than for paper; more ink is needed as the fabric tends to be more absorbent. If you are printing on paper, especially if it's a very detailed design and it is all about the details you need a higher T rate, so 77T *finer screen is require
Choice of fabric
Best results are obtained from absorbent fabrics; avoid waterproof fabrics as they tend to inhibit penetration and repel the water-based colours. Fabrics containing starch, size, fillers, softeners or crease-proof treatments should be washed prior to printing. Fabrics containing waterproofing treatments may not accept the paints and may result in mottling, poor colour adhesion or patchy printing and may not remain wash proof.
Derivan Screen Ink is also the perfect choice to create beautiful patterns using the Tie Dye technique.
Add 1 heaped teaspoon of table salt to a 250ml of Screen Ink of a colour of your choice and stir
it takes quite a bit of stirring - the mixture should become as thin as water - which is great for painting on fabric. Of course to dye with, you will need to add water, how much water will depend on the choice of colour you are using and how strong you want it to be, start with 1 part of mixed Screen Ink to 10 parts water for a strong dye colour - or reduce the colour strength as desired by adding more water.
the mixture should become as thin as water !
Paints used in fabric printing require heat fixing in order to become wash proof. Any type of heat can be used for this purpose. Heat tunnels or ovens may be used, but the most common form of heat fixing is the use of household iron. The main points to be observed are:
Ensure your design has completely air dried before it is heat fixed.
When heat fixing, apply heat evenly and continuously for the required time over the image.
Be sure not to scorch or burn the image or garment by keeping the iron moving constantly. Remove the iron briefly if the garment is getting too hot before continuing.
Use a tea towel or another piece of cotton cloth over the image to iron on. Do not use the iron in direct contact with the image.
Heat fix times and temperatures: Please note heat fixing times and temperatures are subject to vary depending on the accuracy of the settings in the appliance to be used. The following is a guide only:
• Cotton, calico, linen, rayon 4-5mins at 140°C -180°C
• Synthetics, nylon, polyester, tetron, acrylic 5-8mins at 115°C -130°C
It is important to remember that valuable projects always warrant a test. Heat fixing tests should always be done on the fabric to determine the temperature and time required
to make the image fast (permanent) but without scorching the particular fabric. Test by heat
You’ll need to set the fabric paint with heat. In order for the paint to set permanently into the fabric, it has to be set with heat. Check ahead of time that the fabric you’re using can be treated with heat since this step ensures that your design will last much longer than without it.