A new acrylic cell stabilizer for rigid PVC foam sheet is said to reduce additive usage by 10% to 15% or else produce lower-density foam with performance equal to higher densities. Paraloid SureCel from Rohm & Haas, Philadelphia, is a white, free-flowing powder for use in promotional displays and building materials. It is said to provide superior cell uniformity across wide sheet dies, with fewer voids and less shrinkage. It is also claimed to produce lower-gloss products that are easy to coat and have good paint and ink adhesion. SureCel is also said to process at lower temperature to reduce both energy consumption and PVC yellowing. It is also easily substituted in existing formulations, says the company.
