SAP, short for superabsorbent Polymer, is a cross-linked, water-insoluble Polymer which can absorb and retain large amounts of a polar liquid such as water or aqueous solutions. Water is bound between the cross-linked SAP molecules to form a hydrogel. Due to this, SAP is the ideal filler medium for diapers or other sanitary products. Other applications include products for plant irrigation, air drying, waste treatment or the construction industry. The absorptive capacity as well as the SAP particle size should be adjusted to the intended application for ideal results. For example, in the prime market of sanitary products, a very narrow particle size, mainly between 0,1 and 1,0 mm, is required. There should be no dust content and no oversize. For the grinding to the required size, the especially designed Bauermeister Roller Mills with two or three stages and varying corrugations and easily exchangeable gap settings are the ideal machine. If a finer product is targeted, our Universal Mills offer a wide range of possibilities.