Retention - Hi-Tech Inks

A modified nitrocellulose gravure ink system utilised in the manufacture of gravure surface printed paper labels generally for bottled beverages such as beer. This product was developed to retain colour and film formation on paper labels when bottles are recycled in a caustic bath wash. Displays good gloss and slip properties.

A strong high gloss ink for high-speed surface print
The retention is good in alkali solutions

Properties

Displays good scuff properties
Good gloss
Low solvent retention
No blocking in reel form
Good heat resistance 180ºC
Low odour
Excellent flexibility
Oil resistant
Low foaming characteristics
Good light fastness properties
Non-toxic
Good penetration in alkali solutions (caustic penetration within 30 secs)
Good slip properties
Good scuff (rub resistance)
Retention in high alkali solutions
Adhesion & tape release
Excellent printability and wetting

Wash up

For washing up purposes the recommended reducing solvent can be utilised.

Solids Content

White – 48 to 52%
Colour – 27 to 32% depending on colour & colour strength specified
Varnish – 20 to 22%
Metallic – 35 to 38% (Linings)
Metallic – 22 to 25% (Aluminium)

Substrates

Can be utilised on both wet strength and metalised paper.

Viscosity

White

Supply visc: 45 sec + Zahn #2 @ 25ºC
Print visc: 19 to 24 sec Zahn #2 @ 25ºC

Colour

Supply visc: 40 sec + Zahn #2 @ 25ºC
Print visc: 19 to 26 sec Zahn #2 @ 25ºC

Varnish

Supply visc: 35 sec + Zahn #2 @ 25ºC
Print visc: 18 to 22 sec Zahn #2 @ 25ºC

Metallic

Supply visc: 45 sec + Zahn #2 @ 25ºC
Print visc: 22 to 28 sec Zahn #2 @ 25ºC

Reducer

Ethyl Alcohol/Ethyl Acetate blend apart from metallics where acetates should be utilised (Ethyl Acetate/Normal Propyl Acetate blend)

Faster drying – Add Ethyl Acetate
Retarding – Add Ethyl Alcohol

For further retardation add Normal Propyl Acetate (Oxitol and Cellosolve can also be utilised in small doses, no more than 10%)

BCF

These inks have been formulated in accordance with the recommendation of the British Coatings Federation.

Waste disposal

Care should be exercised in the disposal of printing ink waste. This should be carried out in accordance with good industrial practice observing all the appropriate regulations including the relevant guideline notes to the Environment Conservation Act and Regulations (73/1989).

Health and Safety

Full details appear on the Material Safety Data Sheets.

Retention – Datasheet

Features