: S1: conveying the substrate to the set position; S2: screen printing snowflake UV ink on a substrate; S3: curing the substrate silk-printed with snowflake UV ink by a photo-curing machine, wherein the photo-curing machine is provided with a snowflake UV lamp and a photo-curing UV lamp, and the UV energy of the snowflake UV lamp is less than that of the photo-curing UV lamp, and the substrate silk-printed with snowflake UV ink is irradiated by the snowflake UV lamp first and then by the photo-curing UV lamp.
under the conditions of reducing the viscosity of the snowflake UV ink and the UV energy value to the equipment of the photo-curing machine, the snowflake UV ink cured on the substrate by screen printing can still ensure good flowering effect, strong adhesion, strong tensile strength, strong scratch resistance, good flexibility, fine sand feeling, delicate hand feeling, luxurious and elegant effects and high yield.