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Bulletin 2 - Traditional Screen Reclamation System vs Alternative System Epsilon


Chemical Composition
Traditional System Alternative System Epsilon

Ink Remover

100% Lacquer thinner, consisting of:
30% Methyl ethyl ketone
20% Naphtha light aliphatic
20% Toluene
15% n-butyl acetate
10% Isobutyl isobutyrate
5% Methanol

Cyclohexanone
Methoxypropanol acetate
Diethylene glycol
Benzyl alcohol
Diacetone alcohol
Aromatic solvent naphtha
Derivatized plant oil

Emulsion Remover

1% Sodium periodate
99% Water

Sodium periodate
Sulfate salt
Water

Haze Remover

10% Xylene
30% Acetone
30% Mineral spirits
30% Cyclohexanone

Alkyl benzene sulfonates
Ethoxylated nonylphenol
Phosphate salt
Sodium hydroxide
Derivatized plant oil
Water
Ink Remover
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Health Risks1
Traditional System Alternative System Epsilon

If you use the ink or haze remover on a regular basis, there is a clear concern for harmful health effects from inhaling the chemicals (specifically toluene, methyl ethyl ketone, and acetone).

There is also a clear concern for adverse health effects if your skin contacts the ink or haze remover on a daily basis (also from toluene, methyl ethyl ketone, and acetone). The concern is marginal for contact with cyclohexanone in the haze remover. If gloves and safety goggles are worn, the risk is negligible.

There is a clear concern that regular, unprotected contact with the emulsion remover will cause skin and eye irritation and tissue damage. If gloves and safety goggles are worn, the risk is negligible.


There are no clear concerns associated with any part of the Epsilon system. There is a marginal concern for developmental toxicity risk from inhalation exposures to cyclohexanone in the ink remover.

If you use the ink or haze remover on a daily basis without wearing gloves, there is a marginal concern for harmful effects from the chemicals (specifically cyclohexanone, benzyl alcohol, and methoxypropanol acetate) being absorbed through your skin. If gloves and safety goggles are worn, the risk is negligible.

There is a clear concern that regular, unprotected contact with the emulsion remover will cause skin and eye irritation and tissue damage. If gloves and safety goggles are worn, the risk is negligible.

  1Clear concerns > Marginal concerns > Negligible concerns. Concerns were identified because exact risks were not calculated. The information in this table is based on the September 1994 draft Cleaner Technologies Substitutes Assessment: Screen Printing Technical Report.

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Performance
Traditional System Alternative System Epsilon

Ink Remover

With solvent and UV inks, it removed the ink with moderate scrubbing effort. A gray haze remained on the entire screen. With water-based ink, the ink solidified.

In on-site demonstrations, removed ink well. Worked well in lab testing.

Emulsion Remover

Not demonstrated2

Quickly and easily removed the stencil during facility demos and lab tests.

Haze Remover

Not demonstrated2

Lightened the ink stain and usually removed the haze during both lab testing and facility demonstrations.
  2The ink remover was demonstrated during laboratory tests as a component of a different reclamation system.

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Cost
Traditional System Alternative System Epsilon

$6.27/screen or $9,399/year

Facility A: $3.08/screen or $4,624/year

Facility B: $5.29/screen or $7,930/year

[ Back to Bulletin 2 ] [ Back to Top ] [ Chemical Composition ] [ Health Risks ] [ Performance ] [ Cost ]

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