HR SERIES INKS

TECHNICAL INFORMATION

HR series inks are heat resistant inks formulated for rotogravure and flexo surface printing onto a range of films, paper and foil.

SUBSTRATES:

HR series inks have good adhesion on treated polypropylene and pearlised OPP as well as polyethylene. To ensure good adhesion the minimum treatment should be 40 dynes/cm. HR series inks are also suitable for printing onto paper and NC coated aluminum foil. HR inks should not be printed onto coated films such as MB777. Please contact Coates Lorilleux for recommendations for printing this type of film.

PROPERTIES:

HR series inks have good adhesion on a range of substrates giving good scuff and abrasion resistance. They are suitable for deep freeze packaging, although this requirement should be advised to Coates Lorilleux prior to ordering. HR series inks are heat resistant from 120°C to 170°C and suitable for printing in heat seal areas. Colours will have a reasonable degree of light fastness, but may not withstand prolonged exposure to sunlight. If extra light fast inks are required this should be stated at time of ordering. HR series inks are not suitable for lamination.

PRESS CONDITIONS:

HR series inks can be printed at most printing speeds without problem. Where fast print speeds are used, it is recommended that efficient drying units and chill rollers are utilised. High rewind tensions are not recommended.

REDUCERS:

The recommended reducers for HR series inks are:

Roto: Normal: Ethanol 50% /Ethyl acetate 50%Slow: N-propanol 50% /N-propyl acetate 50%

Flexo: Normal: Ethanol 80% /Ethyl acetate 20% Slow: N-propanol 80% /N-propyl acetate 20% Isopropyl Alcohol can be used as a substitute for Ethanol, although this may lead to inferior gravure printability.

Retarder: Glycol ether maximum 5 %. Excess Glycol should not be used as this can cause solvent retention and blocking.

ROLLERS AND STEREOS:

Being alcohol rich, HR inks for flexo applications can be run with most normal rubber rollers and stereos. Photopolymer plates may also be used with high alcohol diluents, but this requirement should be advised at time of order to ensure that the correct formulation is being supplied for these plates.

WASH UP:

Alcohol ester 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.