General Chemical Corp.’s SCREENPEEL 4220 is a strippable coating engineered for use on a wide variety of surfaces for Silk screen printing. This strippable coatings are specifically designed for silk screen printing applications. Dry film thickness can range from one to three mils. All peelalbe coatings are clear when dry and available in blue tint or clear version. Cured strippable coatings of SCREENPEEL 4220 are water resistant. SCREENPEEL 4220 resists forming operations that reach temperatures in excess of 200ºF. SCREENPEEL 4220 Peelable coating resists alkaline cleaners, hot water rinse and dry off. The application of SCREENPEEL 4220 coatings will protect metals, glass, baked enamels and many plastic substrates from damage during manufacturing, storage and shipping. SCREENPEEL 4220 represents the ultimate in non-solvent, water borne, Peelable coating. SCREENPEEL 4220 does not contain any VOCs.
Application: SCREENPEEL 4220 is normally used as received. SCREENPEEL 4220 is also water reducible if lower viscosities are needed for improved application properties. SCREENPEEL 4220 is formulated for silk-screen printing applications such as in appliance manufacturing. The applied coating cures by water evaporation. SCREENPEEL 4220 will air dry in about an hour. Force dry coatings, assisted with some heat, can dry in as little as five minutes. The coating is resistant to water and some solvents used in paint. Application temperatures range from 60º F to 160º F.
Removal: Can be removed by peeling.
Water Resistant Screenpeel_4220 presents no fire hazard as received, during, or after application.
Disposal: Screenpeel_4220 is formulated to exclude ingredients that are deleterious to the painting process, such as silicones, or to the water wash system, such as foam generating or foam stabilizing ingredients.
1.When applying, use the same protection as used while applying paint. The booth ventilation stem should be operating while the material is being sprayed.
2.Chemical goggles and impervious gloves should be worn when handling Screenpeel_4220.
3.Use of non-sparking metal equipment is advised when scraping to remove booth coatings, to avoid fire hazards from the accumulated paint.
First Time Application:
I. Cleaning of Equipment: To clean the pressure pot, airless equipment, spray guns, or spray lines
1. Flush equipment and lines with the current paint thinner (ex. toluene, xylene, or mek),
2.Follow with a water reducible solvent, such as butyl cellosolve. This will help to remove any solvent residue.
3.Thoroughly rinse with water. Making sure that all solvent and paint residues are removed.
II. Cleaning: To clean all surfaces where Screenpeel_4220 is to be applied
1.Clean surface with butyl-cellosolve type cleaner.
2. Remove all previous Peelable coatings, oils, dirt, and solvent residue from the surface.
NOTE: You do not have to do this cleaning step to have Screenpeel_4220 peel or rinse off the surfaces. This procedure can be eliminated after the second and all subsequent applications.
Screenpeel_4220 can now be applied.
Some Equipment Notes:
Airless System: Recommended tip size is .070, similar to a glue tip.
Screenpeel_4220 can also be applied by roller coating or by brushing.
Peelable Coatings and Strippable Coatings For Silk Screen Printing
Note: The information presented herein is our interpretation of certain test results and field experience to date. The information is not to be taken as warranty or representation for which we assume legal responsibility, nor as permission or recommendation to practice any patented invention without a license. It is offered solely for your consideration, investigation and verification.