Pad Printing Inks

HSV 7500 Pad Printing Ink

Colour mixing

In this ink series the Visprox colours according to the Colormatic matching system can be obtained by using the mixing colours A-M as well as colours of other matching systems. Pantone formulations are available. Condition: white substrate.

Gloss

The gloss is dependent on the layer thickness and the printed grounds. In practice it is sometimes necessary to print twice or more without a pauze so as to obtain a beautiful gloss.

Adhesion

On the under “application” mentioned materials the adhesion is good. The to be printed materials have to be free from oxides (metals) and grease. While degreasing see to it that the cleanser itself does not contain grease and be sure that the to be printed materials is dampproof. A very good degreaser is isopropyl alcohol (polish with a dry cloth).

Chemical resistance

If well dried the HSV 7500 inks is resistant to alcohols, cosmetics (shampoos and hairsprays), detergents, soap, mineral oils, and cleaning spirit. The HSV 7500 does not resist aggresive aromatics and ketones, aggresive acids and lyes.

Opacity

The opacity of the HSV 7500 inks is good. The several colours, white and black are available in an extra opaque quality.

Bleeding

The pigments applied in the HSV 7500 inks do not bleed when overprinted.

Light fastness

The lightfastness of all the colours in full tone is good. The thicker the layer, the better the light-fastness. When extended with white or Clear/Overprint Varnish the lightfastness diminishes.

Cliché Depths

The HSV 7500 pad printing inks have a good ink transfer and can be used with quite significant cliché depths. Generally speaking, a depth of 26 to 36 micrometer (0,001” - 0,0015”) is recommended. Even clichés up to 40 micrometer can be used when during printing the pad is treated with air.

Thinner

Stir the ink well before diluting. Dilute with 20 to 25% thinner 71 or 85. When printing fine details and/or when working at higher surrounding temperatures, a mixture of thinner 71/85 and retarder 4 can be used. Too little an addition of thinner can be detrimental to the drying and printing qualities of the ink.

Extension

HSV 7500 Clear/Overprint Varnish can be added in every proportion so as to lower the colour intensity or to abtain semi-transparent effects, this, however, reduces the lightfastness, dependent on the added percentage.

Matting

The gloss of the HSV 7500 inks can be reduced by an addition of Visprox Matting Paste. Dependent on the result required: add 10-30%. The use of matting paste decreases the weather resistance.

Varnish

In order to increase the gloss of the HSV 7500 inks a layer of HSV 7549 Clear/Overprint Varnish can be applied. This may also be desirable when very high demands are made upon the scratch resistance. When a partial or full mat surface is required a layer of HSV 7545 Clear Flat can be applied.

Halftone prints

For the manufacture of halftone prints the following colours are available: HSV 7551 Yellow, HSV 7552 Cyan, HSV 7553 Magenta and HSV 7554 Black. HSV 7549 Clear/Overprint Varnish can be added in every proportion for adjusting the colour intensity.