Pulp Formulation Services

During egg tray manufacturing process, several kinds of quantitative ingredients may be added in pulp pool according to your formulation, and proceed with sizing and addition of functional agent. For example, sizing agent ( such as rosin, emulsified wax) is applied for liquid penetration-resistance of  molded pulp products. For non tacky pulp, rosin size equivalent to 3% of qualitative properties of bone dry fiber must to be added, and 1.5%-2% for tacky pulp. By adding talcum powder as filling in to pulp helps to reach higher retention. Some manufacturers also add a small quantity of oil/water resistance agent, wet strength agent and/or retention aid. Coloring agent need to be added into pulping machine If you want colored egg boxes or cartons.