what is biodegradable inks
The oil is usually mineral based and the pigments can contain heavy metals. This means that when card or paper rots and degrades in the soil the oil and pigments are left to pollute the environment. Modern biodegradable inks are based on vegetable oils such as Soya oil, sunseed oil or rapeseed oil.These are naturally biodegradable. Modern biodegradable pigments are based on yellow, red and blue primary colours.nks have three basic components, varnish, oil and pigment. The pigment provides the actual colour, the oil allows smooth application of the colour and the varnish gives the final glossy finish. The varnish also protects the pigment from being rubbed away too easily or becoming cracked and damaged.