Hitac Adhesives and Coatings RA-44W

Other characteristics

Functions

Release Agent

Carrier

Water

Markets

• Adhesives & Sealants
• Printing & Packaging

Appearance

Milky Liquid, Milky Liquid

Technology

CASE Ingredients

HIGHLIGHTS

RA-44W is a water-based release coating, a low adhesion backside (LAB), designed for tapes with paper as a substrate. It is effective for providing an easy to moderate release from adhesives based on acrylic, natural rubber, SBR and SIS block copolymers. Typical tape backings used with RA-44W are latex-impregnated crepe and flat papers. RA-44W may be used as shipped or may be diluted with water to 20-40% total solids, depending on the paper, adhesive, and coating method. Coating methods include Mayer rod rotogravure roll, knife over roll, and various slot/roll configurations. The recommendation for laboratory evaluation for a saturated crepe is as follows: Draw down the emulsion as is, or dilute with water using a #6 Mayer rod and dry in an air oven at 100-150°C for 5 minutes or until dry. Dry coating weights may be in the 5-10 g/sm range. In-plant scale operations, release properties develop by flashing off the water at 120-175ºC (250-350°F) for 2-10 seconds, depending on web speed, oven length, drying air temperature and velocity, and oven configuration.

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Unwind Adhesion Value

BASED ON PREMIUM OPP PACKING TAPE WITH SIS-BASED PSA

Compatible Substrates and Surfaces

Paper