HG SERIES HG

APPLICATION:  HG screen printing inks are suitable for printing on all kinds of thermoplastics, especially acrylics, rigid and plasticized PVC, C.A.B. (Cellulose Acetate Butyrate), various types of polystyrene, and polycarbonate. HG is not suitable for polyethylene and polypropylene substrates.

NOTE: Pretest all substrates prior to use in production.

CHARACTERISTICS:  HG inks air dry or jet dry quickly to a high gloss. The degree of gloss depends on the substrate, and in some cases the color shade. HG are processed easily and have relatively mild odor. HG blending colors are formulated on brilliant, weather resistant pigments with maximum lightfastness. Opacity can be enhanced with the addition of white.

NOTE: All air drying screen inks retain solvents to some degree, full adhesion and other properties may not be achieved until one to two days after printing. Certain high pigmented HG inks such as Opaque White may show surface cracks when dried under adverse conditions.

PIGMENTS/LIGHTFASTNESS:  HG inks are available in C-Mix 2000 blending shades, 4 color process, transparent shades, metallics and special dyes. If blended inks are mixed to contain high contents of white or clear, lightfastness is reduced.

MODIFICATION:  Prior to processing, the viscosity of HG inks must be adjusted 5-25% by weight with the appropriate thinner or retarder HG-V and or HG-D. Universal thinners/retarders, UV1 to UV4, can also be used. HG ink series can be adjusted for spray applications with approx. 25-40% by weight HG-VSP.

DRYING:  HG inks air dry by evaporation of solvents. Drying time is approx. 10-15 minutes at room temperature or 30-60 sec. in a belt dryer at temperatures of approx. 104-122° F (40-50° C). Distortion of the printed material is reduced to a minimum due to quick evaporation of solvents. Drying speed maybe reduced when multiple layers are applied. If rack drying, ensure good air circulation to prevent solvent being trapped in the ink.

MISCIBILITY:  HG inks are miscible with certain other screen inks for plastics, such as Coates Screen ink series C32, C99 and J. The drying speeds and effect of mixed inks on the substrate will differ from that of the original components.

BRONZE INKS:  For printing of metallic decorative inks bronze pastes B75 to B79 are available. Bronze pastes must be blended with mixing clear, HG-E50, prior to processing. Mixing ratios by weight should be:

If bronze prints have to be overprinted, we recommend an additional 10-30% of HG-E50. In all cases it is essential to check overprintability. Bronze prints tend to oxidize when exposed to the atmosphere. Overprinting the bronze inks will delay this oxidizing process for some time. Coates Screen has reduced the oxidation problem by offering the AB premixed metallic series and the MG Metalure series. These inks are produced by an expensive processing method using special metallics and pigments.

The HG-**AB metallic series offers good overprintability, oxidation resistance, excellent opacity and exhibits an average metallic gloss. The HG-**AB series is available in metallic shades 75AB to 79AB.

The HG-**MG (Metalure) series offers good overprintability, oxidation resistance, high gloss, metallic effect and high-frequency weldability. The HG-**MG series is available in 75MG to 79MG.

OVERPRINTING:  For decorative application, or when exterior durability is not required, HG-E50 Clear may be used to overprint HG inks.

For maximum exterior durability, an alternative product, OPC-190 Overprint Clear, is recommended. OPC-190 is specially formulated for use only as an overprint clear.

If required, OPC-190 may be reduced with 5-15% by weight of ST-280 Overprint Clear Reducer.

NOTE: Pretest OPC-190 prior to use in production.

COVERAGE:  When printed through a 230/in. [90/cm] mesh, one gallon of HG will cover approx. 1200 square feet.

STENCIL:  Direct photo emulsion, capillary film, indirect stencils or solvent resistant stencil.

SQUEEGEE:  Medium to hard durometer urethane squeegee.

CLEANING:  HG inks can be removed from stencils and tools using universal cleaning agent URS or URS3.
 

C-Mix 2000 Blending Colors:

HG-Y30 Primrose

HG-Y50 Golden Yellow

HG-O50 Orange

HG-R20 Scarlet

HG-R50 Red

HG-M50 Magenta

HG-V50 Violet

HG-B50 Blue

HG-G50 Green

HG-N50 Blending Black

HG-W50 Blending White

HG-E50 Clear
 

Standard Products:

OPC-190 Overprint Clear

HG-N501 Opaque Black

HG-W501 Opaque White
 

Process Colors:

HG-E180 Euro Process Yellow

HG-E181 Euro Process Magenta

HG-E182 Euro Process Cyan

HG-TP Transparent Paste
 

Modifiers:

HG-V Thinner

HG-D Retarder

HG-VSP Spray thinner

UV1 Thinner\Retarder

UV2 Thinner\Retarder

UV4 Thinner\Retarder
 

HEALTH AND SAFETY: As with all inks, gloves and safety goggles should be used when handling this product. For more complete information, refer to the relevant Material Safety Data Sheet.

In accordance with information received from suppliers, the HG products above do not contain heavy metals and therefore comply with 16 CFR, Part 1303, ANSI Z66.1-1964, ASTM F 963 and CONEG packaging regulations.