Properties decoration colors

Table 3.6. Physical properties of Ceran decoration colors...

For RRIM-based composites, the main benefit is the case with which the properties can be varied across a wide range. Decorative finishes can be applied to RRIM molding by painting or, where color matching between components is less important, by self-coloring. However, color coating of the mold surface prior to RIM provides a better finish. 

In printing inks P.Y.173 it is a very green shade opaque yellow with excellent light, weather and solvent fastness properties, but low color strength. It is recommended for paste and liquid inks where high fastness properties are required as well as for water based decorative inks. 

The list of applications also includes decorative printing inks for laminated plastic sheets based on melamine or polyester resin. The required fastness and performance properties are very good the pigment does not, for instance, color the clear sheets. 8% gravure prints (20 pm cell depth) equal step 8 on the Blue Scale for lightfastness. 

Two main properties render a material valuable for producing a pigment that it reflects light of a particular color and that it covers and hides underlying surface imperfections, a property known as hiding power. It is also these two properties that make pigments ideal materials for making paints, preparations used to decorate and protect surfaces and obliterate their imperfections (see Textbox 18). Paints have been made and used since very early antiquity (Colombo 1995 Ashok 1993). 

Parts molded from melamine compounds have a hard scratch resistant surface, practically no odor or taste, good electrical properties, fair arc track resistance, decorative appearance, and color fast characteristics. 

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