Chemlease Sealer 15

Application Instructions

Wiping

1. Mold surface must be thoroughly cleaned to remove all traces of wax, release agents, and other sealers. We recommend Chemlease® Mold Cleaner.
2. Surface should be dry and free of contaminants.
3. Saturate clean cotton cloth (not dripping) and wipe on a smoothcontinuous film of no more than a few square feet at a time.
4. When the film begins to evaporate at the edges, wipe thesurface with a second clean dry cotton cloth. Use a circular motion from the outside, working inwards until the tooling is left dry and clear. See Notes.
5. Repeat above procedures until entire mold surface has been covered. Usually only one coat is necessary on a seasoned mold (Two coats are recommended when sealing a new or green mold. Allow 15 minutes cure time between the first and secondapplication. Wait1hourafterthesecondcoatbefore applying the release or top coat).
6. Allow to cure for one hour before applying mold release.

Spraying

1. Mold surface must be thoroughly cleaned to remove all traces of wax, release agents, and sealers.
2. To apply by spraying use a new, clean, hand held manual spray bottle or a clean dry air system. It is important that all containers and spray lines be thoroughly clean and dry. If container is dirty, rinse at least 2 times with an appropriate cleaner.
3. Keep spray nozzle 15 inches from mold surface and apply a smooth, thin continuous film. Do not allow to run or drip (by over applying).
4. When film begins to evaporate at edges, wipe the surface with a second clean dry cotton cloth using a circular motion from the outside, working inwards until film is left dry and clear.

See Notes.
5. Repeat above procedures until the entire mold surface is

covered, overlapping slightly to ensure complete coverage. Usually only one coat is necessary on a seasoned mold(Two coats are recommended when sealing a new or green mold. Allow 15 minutes cure time between the first and second application. Wait one hour after the second coat before applying the release or top coat).

6. Allow to cure for one hour before applying mold release.

Notes

Time will vary with room and mold temperature. Wipe off as the solvent begins to evaporate. If the release agent is left on too long, you may notice some smearing or streaking. To remove the smear or streak, rub the affected area with the recommended Chemlease® release agent, then simply remove the excess sooner than you had before.

Important

The recommended number of coats and cure times are a general guideline found to be more than sufficient in a broad spectrum of molding conditions. When molding products with extreme geometries or experiencing low-humidity conditions in the shop, the customer may find the need to extend the cure time between coats and increase the number of coats applied to the mold. The efficiency of a release film is best determined through a combination of tape tests and experimentation. Troubleshooting Tips

1. Keep container closed at all times when not in use.
2. Mold must be thoroughly cleaned and dried before application.

A good test to tell if the mold is clean is to use a small piece of masking tape (approximately 1” in width) on the mold surface. Sufficient resistance should be felt when removing the tape.

3. Material should be clear with no noticeable precipitate. If cloudy or milky, material is contaminated.

4. Areas of application should be well ventilated.

Storage

Donotstoreabove49°C/120°F. Keepcontainertightlysealedto prevent evaporation and/or contamination. If stored in cold temperatures, allow to warm to room temperature before using.

Packaging

Chemlease® 15 Sealer EZ is available in a variety of package sizes. Please contact Chem-Trend customer service for details.

Safety Data

Safety Data Sheets are available for all Chemlease® products and should be consulted prior to use of the product.

Further Information

Request information on our complete range of materials: custom- formulated release agents for polyurethane molding; tire lubes and bladder coatings; Mono-Coat® semi-permanent release coatings; aerosol formulations; mold cleaners and sealers; specialized coatings and application equipment.