This preferred product is for the demanding duties of inks in today’s quality printing and packaging environment.HI-AID 250 is a chelated titanate containing iso-propanol and ethanol as solvent. It is a titanium chelate developed in response to the need of the printing industry for a low odour, low colour adhesion promoter. It does not contain acetyl acetone. Today HI-AID 250 is the leading adhesion promoter for high quality, demanding printing applications.
PHYSICAL PROPERTIES AND APPLICATIONS
|1||Appearance||Transparent water white|
|2||% Of Solid Content||45 +/- 2|
|3||Solvent||Iso Propyl Acetate|
|4||Viscosity By B4 Cup in Sec. @ 30oC||16 +/_ 5|
|5||Flash Point||5 Deg. Cent|
|7||Specific Gravity||1.004 +/-0.02|
|8||Colour Gardner||1 Max|
Pot Life : Pot life of mixed Cross Linking Resin is about 6 Months.
Self Life : Shelf life of Cross Linking Resin / unopened / undamaged packing under Normal s storage condition is 1 year.
Dilution : Dilution is recommended by using recommended Solvent.
Coextruded oriented polypropylene
Although the impetus for developing HA-AID product was the need to promote adhesion, it was also found that it improved the ink’s heat resistance. This allowed the film to be heat sealed in the printed area, helping pave the way for HI-AID 250 to establish market leader in coextruded oriented polypropylene applications. To obtain increased adhesion using HI-AID 250, you need to treat the film surface, usually by corona discharge.
HI-AID 250 also works successfully in inks for printing onto corona dischargetreated polyethylene. The resulting increased water resistance is important for deep-freeze and boil-in-the-bag applications. They are also effective on NCcoated cellophane, OPP film, shellac-washed aluminum, pearlized polypropylene and on polyethylene-coated milk cartons.
Polyvinyl Butyral-based (PVB) inks
Whilst adhesion of PVB based inks to polypropylene films is good, it can be improved further by the addition of HI-AID 250.The effects of HI-AID product on heat stability depend on the ink formulation and substrate.Improvements can be achieved at up to 160° C. The addition of a stabilizer such as maelic acid to control the ink viscosity is particularly important
Nitrocellulose/polyurethane and nitrocellulose/polyamide inks
HI-AID 250 is effective in a variety of resin systems which have nitrocellulose (NC) as the principal film former and, usually, incorporate a co-binder such as polyamide or fully reacted polyurethane. It brings the following demonstrable benefits:
- Improved adhesion to OPP film
- Improved heat stability depending on the grade of OPP film used
- Reduced yellowing effects with HI-AID 250 compared with titanium acetylacetonates
- No reduction in gloss with HI-AID 250
- Improvement in the performance of acrylics, alkyd and maleic resins used with nitrocellulose
PREFERRED PRINTING PROCESSES
The flexographic process provides good quality printing on to a variety of substrates, including stretchable films, offering versatility and economic cost. Low viscosity liquid inks which dry by absorption or solvent evaporation are used either directly or for producing laminate structures. HI-AID 250 is widely used in solvent based flexographic inks to improve adhesion to film and increase heat resistance, water resistance, grease resistance and chemical resistance.
The gravure process produces very high quality graphics on paper, foil and some (non-stretchable) plastic films and is best suited for long production runs. For some flexible packaging applications, properties of the printed ink films are improved by the incorporation of HI-AID 250 In the case of C-type inks containing nitrocellulose which dominate the packaging gravure market, HIAID product improve the adhesion and grease resistance. With D-type inks based on polyamide resins, HI-AID additives improve adhesion and increase heat resistance.