SGH INK SERIES

TECHNICAL INFORMATION

SGH inks are specially formulated to meet the exacting demands of flexographic half tone process in that they give excellent dot reproduction with minimum dot gain on treated polythene film and certain other substrates. They are suited to running on the modern high speed flexo press yet have controlled drying properties to enable easy make ready at low speed, with little or no alteration.

SUBSTRATES:

SGH inks have good adhesion on a number of treated polyolefin films and other substrates: Low and high density polythene. Two side treated polythene. Certain cast, orientated and co extruded polypropylenes. Some cellulose films. Certain paper based materials. Treatment level of 38 - 44 dynes/cm is normally required to ensure adhesion.

PROPERTIES:

High colour strength at print viscosity. Low odour and solvent retention. Resistance to two side treatment and double side printing. Anti static properties and good slip for enhanced packaging machine performance. Good adhesion giving scuff and abrasion resistance. SGH inks are not regarded as heat resistant.

COLOUR RANGE:

SGH inks are available as a four colour process set. Strength reducer is also available. Colours have a reasonable degree of light fastness but may not withstand prolonged exposure to direct sunlight. Where this property is required it should be stated at time of order.

PRESS CONDITIONS:

SGH inks can be printed at a wide range of printing speeds dependant on the reducer used. Where fast print speeds are used, it is recommended that efficient drying units and chill rollers are used to avoid the possibility of blocking. High re-wind tension are not recommended.

ROLLERS AND STEREOS:

SGH inks are hydrocarbon free and may be used with normal rubber and photopolymer plates.

REDUCERS:

The recommended reducers for SGH inks are: Normal: N-propanol 100%Slow: N-propyl alcohol: N-propyl acetate (4:1) Under certain circumstances the addition of a small percentage of ester can be helpful e.g. to replace evaporated ester on low usage colours. The use of slow solvents should be kept to the minimum to avoid the possibility of solvent retention and blocking.

WASH UP:

Ethanol/Ethyl acetate 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.