Partall Film #10 PVA is a water soluble, film-forming barrier solution parting agent.

Partall® One-Coat is a high viscosity PVA film-forming, water-based solution of solvent-resistant, water-soluble materials that is recommended as a temporary protective coating or parting film for making thermoset composite parts. Dry film may be removed from substrate by peeling or washing with warm water. Not for use in processes in which water may come in contact with coating.

DIRECTIONS FOR USE
Partall® One-Coat is ready to use as received, but may be diluted with clean water to suit application method. Apply by dipping part or using a brush, roller or spraygun.

Apply Partall® One-Coat to form a solid, integrated surface without runs or sags. Film will turn white if sprayed but will dry to a clear coat when dry. On vertical surfaces, apply until just before film begins to run. If applying multiple coats, be certain that previous coat has dried completely before proceeding.

When using as a mold release agent, dry film thickness must be at least 2-4 mils on new or reconditioned polyester molds and 1-2 mils on seasoned molds. One gallon will cover approximately 500 square feet.

Drying time per coat is approximately 60 minutes but may vary due to external factors such as humidity and ambient air temperatur. Film must be completely dry before making parts. Surface should be smooth and glossy when dry - do not proceed if film feels tacky.

As a check on application technique: a properly applied coat of Partall® One-Coat can be easily lifted as a solid sheet from mold surface when dry and will be free of pinholes. A dull film may result from insufficient coverage and contain pinholes.

PVA films like Partall® One-Coat are normall applied over mold release waxes such as Partall® Paste #2 or Formula Five® Mold Release Wax when making composites parts.

Porous molds (i.e., plaster or wood) must first be sealed with lacquer or similar coating. A good surface on plaster may be obtained with automobile type primer-sealers and lacquers. Plaster molds must first be thoroughly dried.

The information and recommendations contained in this bulletin are, to the best of our knowledge, accurate and reliable. No guarantee of their accuracy is made, however, and the products discussed are sold without warranty, express or implied and upon conditions that the purchasers shall make their own tests to determine the suitability of such products for their particular purposes and uses. revised june 1, 2008.