Stencil Treatment

Hardener D - for Durability


Hardener D is a liquid stencil hardener formulated for use with QT-DISCHARGE direct emulsion to improve its durability and water resistance. Hardener D can be used with other textile emulsions but will make stencil removal more difficult and may embrittle the stencil.

Product Fact Sheet
Tech Data Sheet
MSDS

INSTRUCTIONS
Step 1: APPLY HARDENER D
Wear gloves, goggles, and protective clothing. Make a stencil with QT-DISCHARGE direct emulsion. Dry the screen and stencil. Apply Hardener D to both sides of the screen with a soft-bristled brush, a sponge, or a work rag.
Step 2: ALLOW HARDENER D TO DRY Let Hardener D dry at room temperature, without the use of a fan. Drying time will depend on the relative humidity, but may take up to one hour under high humidity conditions. Thorough drying allows time for the QT-DISCHARGE stencil to absorb the Hardener D and for Hardener D to evaporate from the open areas of the stencil. Any remaining Hardener D residue in open areas of the screen will usually open up after several prints, or can be removed with solvents. OPTIONAL ADDITIONAL DRYING TIME The water resistance of QT-DISCHARGE will be improved by allowing the screen to dry for a full 24 hours at room temperature, ? 68º F. (20º C.).
OPTIONAL HEAT CURING
Drying Hardener D in heat will increase its water resistance. The higher the heat and the longer the dwell time, the greater will be the water resistance of the stencil. Suggested settings/dwell times: 100º F. (40º C.) for 3 hours; 140º F. (60º C.) for 1 hour
CAUTION
Avoid contact with skin and eyes. Wear gloves, goggles, and protective clothing.
Disposal
Hardener D can generally be washed down drains and is biodegradable in adapted waste-water treatment facilities, but this should be verified with a review of the Material Safety Data Sheet with local authorities.

Hardener X

Hardener X is a post-exposure and processing, liquid screen stencil hardener which improves the stencil durability of textile direct emulsions, including 925WR, TZ, LX-630, LX-660 AND QTX®. For industrial use only.

Product Fact Sheet
Tech Data Sheet
MSDS

INSTRUCTIONS:
Hardener X is applied to both sides of the screen with a soft bristled brush or sponge after the stencil has been properly exposed, washed out and thoroughly dried. Blot excess solution from the image area.

Allow the screen to cure for 24 hours at room temperature. To accelerate the curing process, the screen can be exposed to heat, not exceeding 140 degrees Fahrenheit (60 degrees centigrade), for one hour.

Stencil removal may be impaired by the use of Hardener X. Complete stencil removal may require the use of a high pressure water sprayer on screens treated with Hardener X.

HEALTH AND SAFETY INFORMATION: Hardener X is for industrial use only and should be used only in well ventilated areas. Avoid contact with the skin, eyes, mucous membranes, and clothing. Hardener X may be harmful if swallowed. Wear rubber gloves and eye goggles. Avoid contact with the skin. Wash hands promptly after use.


FIRST AID: Eye--Flush immediately with water for at least 20 minutes. External-flush exposed areas with water for 15 minutes. Internal-Rinse mouth with bicarbonate of soda and drink large quantities of water. Do not induce vomiting. CALL A PHYSICIAN AT ONCE.