UPGRADE FOR WAX COATINGS

KEYWAX Rubber/Wax Concentrates are
the most efficient and effective way to overcome
the typical deficiencies of unmodified wax blends.

KEYWAX Rubber/Wax Concentrates are most often used as wax additives for paper converting. This improves the quality of the wax blends used for treating papers, cellophanes, and paper laminates.

• Wax coating improves the barrier properties of the substrate by reducing its permeability to air and moisture and increasing its resistance to normal wear and tear.
• Coated papers, foil/paper laminates or cellophanes are mainly used as protective wrappers for cheese, dry foods, ice cream novelties and similar products from which air and moisture must be excluded to prevent spoilage.
• In laminates, the wax acts as an adhesive which bonds the layers of paper, foil or board together. Its barrier propertied are beneficial for containers whose contents must be kept dry.

By introducing small quantities of butyl rubber between the wax crystals, KEYWAX Rubber/Wax Concentrates effectively solve the typical deficiencies of unmodified wax blends.

KEYWAX Rubber/Wax Blends are:

• FLEXIBLE and CREASE RESISTANT...even at low temperatures
• IMPERMEABLE...moisture cannot penetrate between the wax crystals
• HEAT RESISTANT...KEYWAX resists melt and flow at high temperatures
• SCUFF RESISTANT
• HIGHLY VISCOUS to CONTROL WICKING...this keeps the substrate from absorbing too much of the coating, adding to cost and increasing brittleness

Typical attempts by wax processors to blend rubber into wax have required significant process time and/or excessive physical energy resulting in a dark colored non-uniform mixture.

 KEYWAX RUBBER/WAX CONCENTRATES are easy to blend into molten wax with low horsepower mixers. There is no easier or more effective way for converters to add rubber and its desirable properties to their wax.

 KEY POLYMER does the hard part – incorporation of tough durable butyl and polyisobutylene rubber into a wax base in a carefully controlled high horsepower blending process so that end users can cut back the concentrate with their wax using simple propeller mixers.

COATED PAPER:

• Typically the addition of 2-15% KEYWAX RUBBER WAX CONCENTRATE to coating waxes prevents strikethrough and enhances flexibility (especially at low temperatures).

• Resistance to vapor transmission, crease resistance, and heat sealing properties are also improved.

PAPER and PAPER/FOIL LAMINATES:

• Microcrystalline waxes are most often used for laminating. Paraffin waxes are lower cost, but less flexible and have lower bond strength. In many cases however the use of KEYWAX RUBBER WAX CONCENTRATE upgrades paraffin to overcome this deficiency.

• The addition of 1-5% KEYWAX RUBBER WAX CONCENTRATE will increase viscosity and reduce delamination at elevated temperature.

• The KEYWAX RUBBER WAX CONCENTRATE prevents strike-through and improves the heat-sealing characteristics of the treated paper by reducing the tendency of the wax to flow away from the area to which heat is applied.

FDA STATUS:
This product meets the FDA requirements set forth in 21CFR 176.170 and 176.180 for use in contact with food. Click here for complete information on FDA compliance.

For more information use our Customer Service Form or call 1-888-KEYPOLY.
Free samples are readily available.