Ultra White DP

More Information (Ultra White DP Technical Guide)


Ultra White DP is a lightweight structural panel consisting of a rigid polystyrene foam core faced on both sides by poly coated Kraft paper. The foam and facers are permanently bonded together. The face laminates have been specially developed to provide a good surface for painting, silk screening, photo mounting and vinyl lay up. Ultra White DP is an excellent choice for interior signage, photo mounting, exhibits, and point of purchase displays.


Ultra White DP is not recommended for exterior use. The paper facers of these panels will not withstand extended exposure to moisture.


Ultra White DP panels are manufactured and packaged flat. Under most circumstances Ultra White DP panels will remain flat. Potential for bowing is greater in thinner panels that have been treated differently on one side than the other, i.e., coating panels on only one side, or exposing one side to extreme moisture. For extremely critical applications, thicker panels should be used.


Ultra White DP panels have poly coated Kraft paper facers. The polyethylene coated paper makes an exceptional surface for painting and silk-screening; vinyl lettering can be removed without destroying the panel surface.


I-CUT DIGITAL GRAPHICS ROUTER: Ultra White DP can be cut with an i-cut router for creating irregular shapes. We recommend i-cut blad i-246. For best results run blade at 163 feet per minute.

CIRCULAR SAWS: Ultra White DP can be cut with circular saw blades specifically designed for cutting paper faced foam boards. General Saw Corporation, 1-800-772-3691, makes a blade (PLF series) that will produce excellent results. Other blade manufacturers make thin-rimmed high speed carbide-tipped plastic cutting blades (72-80 25-degree alternating teeth on a 10” dia. blade). Band saws with similar tooth design can be used.

HAND CUTTING: Ultra White DP can be cut by hand with mat knives, utility knives and razor blades. The key to getting a smooth, clean cut with a knife or razor is to use a very sharp, thin blade held at as low an angle as possible in relationship to the board. This reduces friction and allows the foam to slice rather than tear. It may be more practical to make the cut in more than one pass, especially if the board being cut is thicker than 1/2”.


No special surface preparation is required when gluing to the face of Ultra White DP. The surface should be kept clean and free of any oil-based contaminates. Although many adhesives will work on Ultra White DP, care should be taken in choosing an adhesive for its intended use. Always test the adhesive before a production run and always follow the adhesive manufacturers instructions.


Ultra White DP panels need no special preparation before painting. For best results the surface should be clean and free of any contaminates. This is best achieved by simply wiping the surface with a dry cloth. Ultra White DP can be painted with poster colors, acrylic paints, tempera, India ink and latex-based pigments. Caution should be taken when using oil based or solvent base systems, not to allow the paint to come in contact with the polystyrene core. These types of paints are likely to attack and deteriorate the foam core. The core may be required to be coated with a water based primer before solvent based paints can be used on the core.


GENERAL: Ultra White DP panels are rigid, lightweight and easy to handle. The facers accept most printing inks well. Caution should be taken with any ink. Always test ink on Ultra White DP prior to production run. Allow 24-48 hours after test printing to evaluate the suitability of the ink for the intended application. Follow all of the ink manufacturers instructions.

For best results in silk screening Ultra White DP panels, it is recommended the panels be cleaned to avoid the clogging of screens. This can be accomplished by wiping the panel with a tacky cloth prior to printing.

DRYING: Drying by oxidation and evaporation is recommended. Allow the freshly painted panels to dry the length of time suggested by the particular paint manufacturer. Forced drying by hot air ovens is not recommended.

ULTRA VIOLET INKS: U.V. inks can be used with ULTRA WHITE DP. Always test the suitability of the ink and the drying process for your particular ULTRA WHITE DP thickness. Allow 24-96 hours after test printing to evaluate the results. Follow all of the ink manufacturers instructions.

SCREENING INKS: The following inks have shown excellent results with Ultra White DP.

Ink Designs, Inc.
Flat Poster Ink (F.P. Series)
Hydra Print Ink (H.P. Series)
Multi-Purpose (M.P. Series)
Poly-Enamel (P.E. Series)
Value-Poster (V.P. Series)

Ink Designs International

Naz-Dar / KC
Echo Print (E.O. Series)
7500 Gloss Poster Ink
Satin Poster (S.P. Series)