Board manufacturers are now being offered a way to dramatically reduce the cost of producing a variety of products including particleboards, oriented strandboards and medium density fiberboards.
One important component of the manufacturing processes in all of these products is the use of wax emulsion to improve the moisture resistance of the product. Currently, this wax emulsion is purchased from various oil refiners which produce the emulsion as a byproduct in the production of oil. Now particleboard manufacturers can produce this emulsion in house at a significant savings as compared to the cost of purchasing the emulsion. RHE America offers a wax emulsion system and process know-how including a proprietary “homogenizer,” which gives the particleboard manufacturer the ability to produce high quality wax emulsions at a low cost.
The purpose of the wax emulsion in the manufacture of various board products is to make the boards moisture resistant to a certain degree. This emulsion is made of two parts, one part paraffin wax and the other part water. In the process, the wax is melted and in molten form passes into hot water. A dispersing agent is added and the whole mix is passed through a high pressure homogenizer. A large amount of pressure is exerted on one side of the material while the other side is atmospheric. The material expands passing though the machine and this expansion tears all the particles into tiny droplets. That gives a stable dispersion of wax in water. From there it is stored and passed through the particleboard manufacturing line. The quality of the equipment used in manufacturing particleboard emulsion will determine the quality and stability of the end product.
The economic benefits to board manufacturers are large with an approximate savings of 30 – 50% on the emulsion. Given the cost of the equipment this can result in the equipment paying for itself in less than two years.