Detackification of adhesive materials contained in secondary fiber with polyvinyl alcohol

A method of inhibiting the deposition and adherency of hot melt and/or pressure sensitive adhesive materials contained in pulp produced from waste paper or paper products on the surfaces of equipment, utilized to produce finished paper products from said pulp which consists essentially of adding to the pulp a sufficient amount for the purpose and in the range of about 0.5 to about 30 ppm of a polymer consisting essentially of moieties of vinyl alcohol, which polymer contains at least some hydrophobic groupings and is water-soluble.

A method of assuring that paper and paper products do not adhere to the surfaces of production equipment or to any other surfaces including its own surface which products are produced from pulp derived from waste paper or paperboard containing hot melt and/or pressure sensitive adhesive materials, which consists essentially of incorporating in said paper or papr product a sufficient amount for the purpose and in the range of about 0.5 to about 30 ppm of a polymer consisting essentially of moieties of vinyl alcohol, which polymer contains some hydrophobic groupings and is water-soluble.