Central Pneumatic 40072 Specifications download pdf (Page 25)

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Ink Data Sheets

PLT4 Data Sheet

Epoxy-based Two-component Ink

Characteristics PLT4 ink is a two-component series ink that is dust dry in about 20 seconds. This ink has

a high gloss with very good opacity, it is trouble free and easy to work with. The ink has

excellent mechanical and chemical resistance. PLT4 inks contain certain aggressive sol-

vents and care should be taken during preparation. PLT4 inks are not suitable for constant

outdoor applications.

Applications Particularly suited for printing on cellulose acetate and thermosetting materials. Especially

glass reinforced polyesters, epoxide-reinforced parts, pheno- and amoniplasts, polycar-

bonates, acetic resins (post-treated) and polypropylene and polyethylene (pretreated).

Good results on glass, metal and painted surfaces (both epoxy and powder coated).

Resistance PLT4 has an excellent resistance to many organic solvents, chemical products and diluted

acids.

Flash Point Above 48 degrees C.

Preparation As a two-component ink series, PLT4 should be mixed with PLH hardener and PLTA thin-

ner before use. Mix in a ratio of 4 parts ink to 1 part hardener. It is recommended that the

mixed ink be allowed to rest for 10 minutes before printing. Thin to appropriate viscosity

after adding hardener. In warm climates and in the presence of ne details or screened

images the use of PLTD Retarder in a small percentage is recommended.

Pot Life The life of the mixed ink is 8-10 hours after which the mechanical-chemical resis-

tance and adhesion decrease. This is also dependent on room temperature and

ratio of solvent.

An excessive dilution causes a loss of coverage, smudges and incomplete ink

transfer from the pad.

Drying & Hardening Generally the following drying times are applicable:

Air drying at 68° F: Approx. 20 minutes

Heat drying at 175° F: Approx. 2 -4 minutes

Full curing after drying: 24 hours

Items can be packed right after drying, however, curing may take up to 12 hours at room

temperature. Chemical resistance tests should not be made for at least 72 hours. At that

point PLT4 inks are alkai-proof and solvent-resistant. The nal hardening of the ink is

obtained after 5-6 days.

Range of Colors PLT4 is available in 24 standard colors as well as 7 uorescent & metallic shades. Mix-

ing colors are available. PLT4 has a high light fastness equivalent to 7- 8 rating on the

DIN 16525. PLT4 TP matte paste can be added to adjust standard colors to semi-gloss

shades.

Process Color Printing PLT4 inks are available in process colors PLT4 #180 Yellow, PLT4 #181 Magenta,

and #182 Cyan.

Clean-up PLTEBD Cleaner is recommended.

Storage PLT4 has a shelf life of about 2 years. Storage containers should be sealed and placed

in a cool and dry place. PLH Hardener should not be stored for long periods. The cans

should be closed immediately after use, otherwise the hardener will take on moisture and

become thick and ineffective.

Additives PLH Hardener

PLTA Thinner

PLTD Retarder

Notes:

Polyethylene and polypropylene need to be pretreated either by aming or

corona treating.

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Central Pneumatic 40072 Specifications Page 25

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