PDF SERIES INKS

TECHNICAL INFORMATION

PDF Series inks are a range of flexographic/rotogravure inks formulated for printing onto metallised OPP, PVC and suitable for untreated transparent substrates.

SUBSTRATES:

PDF series inks have good performance on grades of metallised OPP, PVC and untreated substrate tested by Coates Lorilleux. Due to the variable nature of the orientation and the polymer compositions involved, it is essential that proofing trials are conducted on the substrate to be utilised, and that the printer satisfies himself the print is suitable for the requirements of the end user.

PROPERTIES:

PDF inks will give adhesion and scuff resistance to the standards normally required for this type of work, together with good gloss and printability. However, due to the nature of the substrate, adhesion by Scotch tape test may not be up to highest standards obtained on treated substrates. PDF series inks should not be mixed with inks of any other supplier as this may be detrimental to the adhesive properties. Colours have a reasonable degree of lightfastness, but may not withstand extended exposure to direct sunlight. Where this property is required, it should be stated when ordering.

PRESS CONDITIONS:

PDF series inks can be applied at a range of printing speeds dependant on the number and type of driers utilised. While not absolutely essential the use of drying equipment is recommended for all but the slowest print lines. To avoid the possibility of blocking it is recommended that printed bags are cool before stacking if using heated driers and that material is aired and thoroughly dry before bundling. We also recommend that where possible that multi colour builds are avoided as these areas are more prone to blocking.

ROLLERS & STEREOS:

Only resistant rollers and stereos are recommended because of the nature of the solvents in the inks and reducer. The stereos used, and their condition, and the press speed will all have an effect on the colour-strength and shade of the print.

REDUCERS:

The recommended reducer for PDF series inks is : 50 Toluene : 50 Iso propyl alcohol (IPA). This ratio may be varied to obtain the balance between drying speed and press stability. Use of impure IPA or slower-evaporating solvents could lead to high levels of retained solvents, causing blocking. Optimum running viscosity will depend on the type of printing apparatus, please contact Coates Lorilleux for advice. Higher viscosity will mean a higher film-weight and could also lead to blocking problems.

WASH UP:

Toluene/ Iso Propyl Alcohol blends.

Note:

This information has been carefully compiled from experience gained in field conditions and detailed laboratory testing. However, the product's performance and it's suitability for the customer's purchase depend on the particular conditions of use and the material being printed. We recommend that customers satisfy themselves that each product meets their requirements in all respects before commencing a print run. Since we cannot anticipate or control the conditions under which our products are used, it is not possible to guarantee their performance. We would point out that the information provided here is only a recommendation, and may need to be altered to suit the conditions and efficiency of the equipment employed. Coates Lorilleux ink products are not designed for use in conjunction with those of any other ink-maker or similar supplier unless agreed to in writing.