Note：

The polymeric resin used in Durakote 668W reacts when heated. Please store in original container in a cool location out of direct sunlight. Duraktoe 668W is supplied ready to use, no shaking or mixing is required.

Application：

Please read Safety Data Sheet before use.

The mould should be clean and dry before use. If necessary, clean the mould using an abrasive(for example, sand metal or 

dry-ice shot-blasting.). When possible, this should be following by wiping the mould with a solvent based cleaner, such as

Durakaote PMC-600.

Mould cleaning and release agent application should be performed in a well-ventilated area

Mould temperatures between 20 and 60℃

1. Durakote 668W can be applied by brush, wipe(recommended)or spray techniques.

2.Using a clean dry cloth, wipe over mould surface covering an area of approximately 1-2m^2. .No need for

vigorous rubbing or polishing.

3.Wait until the edges start to dry (generally 1-5 min depending on temperature)

4.With a second dry cotton cloth, gently wipe over the wet coating to leave a thin wet film. i.e. spreading the wet film.

Do not wipe until dry. Vigorous rubbing or polishing should be avoided.

5.Repeat steps 2-4 on the adjacent area. Ensure a good overlap with the previous area to provide complete coverage.

6. Repeat until mould is completely coated.

7.When dry, allow a minimun of 1 hour between coats ( at 25℃) for the film to cure. The cure time can be reduced

by warming the mould, for example , at 60℃, 10minutes cure is sufficient.

8.Repeat steps 1-7 above for a further 3 coats (4 in total), Apply each coat at 90 degrees to the last.

9.For new moulds or repaired areas on the old moulds,2extra coats are recommended.

10.After applying the final coat, cure the film for the times indicated in the table below.

Allow time for mould to reach temperature

Mould temperatures between 60 and 200℃

Durakote 668W can be applied by brush, wipe or spray techniques(recommended). When spraying, the use

of a High Volume Low Pressure spray gun is strongly recommended.This type of spray gun will give the best

drying pattern and highest gloss finish while providing optimum transfer efficiency.

Below details the application technique for spray application.

a)The spray gun should be set at 2-2.5 bar pressure(30-35 psi) and ideally fitted with a fluid needle of less

than 1.4 mm diameter.

b)Holding the nozzle of the gun approximately 20cm form the mould surface, adjust the output so that the

film dries in approximately 5-10 seconds when using a normal spray technique. If the film stays wet for > 10

seconds, too much product is being applied.

c)Systematically coat the entire surface of the mould. Care must be taken to over-lap sprayed areas.

d)Immediately after applying the first coat, apply the second at 90^o to the first. No waiting is require

between coats.

e)For difficult to reach areas, use a spray gun extension or lance.

f) Best results will be obtained by using the following paramenters.

g)Do not over-apply; many light coats are preferred to a few heavy coats. At lower temperatures(<100c)

ensure the product dose not run.

h)Allow product to cure for the minimum time given above.

Reapplication:

When release becomes hesitant, reapply one coat of Durakote 668W in the same manner as described

above.

Tips for optimal performance:

If possible, avoid the use of water based mould cleaners. They all contain surfactants or wetting aids which

many interfere with release performance.

When applied to a clean surface at room temperature, Duraktoe 668W form s complete wet film. On a

surface where previous release agent has not been completely removed, the film will become broken(i,e,

de-wet) as it dries. Gently spreading the wet film with a dry cloth will leave release agent where it is required. This helps minimise release agent build-up on the mould.

Steaking and poor cosmetics are generally caused by leaving the wet film too long before spreading the film with the dry cloth. This is most prominent when wipe applying to poorly cleaned moulds or wiping on to moulds at >40 C. This is not an issue except if this is the final coat. With prior coats, the streaks are generally removed on the application of subsequent coats.

As the resin used in Durakote 668W is heat cured, better release and film durability is obtained when the product is applied to pre-heated mould.

Do not use the product on moulds at < 20 C.

For fast application at room temperature, the product can be spray applied using any type of spray equipment (including a garden spray). Then follow steps 3) and 4) over-leaf.

If the dry cloth become wet, replace with a fresh clean dry colth.

A cotton cloth is not necessary, synthetic cloths or wipes that show good absorbency can also be used.

Good release will not be achieved if the product is not heat cured.

Please contact us for further product and application information.