a higher degree of injection mold process reliability than was



    The coloring technique opens up virtually limitless possibilities for designers who want to use BASF's polyarylethersulfone to color household appliances, catering bowls and containers, as well as visible components. Surface effects such as color shades, color streaks, and patterns can now be reproduced for the first time:Injection-molded parts from the same series may appear to be identical, but they are not. The technique has been successfully applied to the two plastic injection molding-molding grades Ultrason® E (PESU: polyethersulfone) and Ultrason® P (PPSU: polyphenylsulfone) for the production of one-of-a-kind parts that benefit from the outstanding mechanical, thermal, and chemical properties of Ultrason® as well as approval for food contact.



    Using new types of nozzle inserts and a special dosing technique, the new process, which was developed at BASF's pilot plant for injection molding and extrusion in Ludwigshafen, makes it possible to produce marbled molded parts on conventional Polycarbonate Injection Molding machines more easily and with a higher degree of process reliability than was previously possible. As Georg Graessel from BASF's global Ultrason® business development explains, "Marble effects have always been a conversation starter in the plastics industry.""Until now, these effects were only possible with complex two-component injection molding processes that did not guarantee reproducibility."With marbling, we are expanding the already diverse design possibilities of Ultrason® to include yet another method of coloring. With proper temperature control of the plastic injection molding parts molding machine, it is possible to produce visually appealing, high-contrast patterns with our P and E plastic injection molding company molding grades."



    Pre-colored base material and high-contrast color masterbatch must be fed into the EX MOULD-molding cycle at the same time. Afterwards, the patterns in the molded part are achieved through the separation and merging of melt streams. This is accomplished through the use of nozzle inserts, which are produced through 3D printing. These inserts provide a great deal of design flexibility, allowing not only for the creation of mirror-image patterns, but also for the creation of rotationally symmetric patterns. Other factors that influence pattern design include the nozzle design itself, the gating system of the mold, the location of the gate, and the flow behavior of the melt during {anchor} filling. In addition to PESU and PPSU, the new BASF technique is suitable for Ultrason® S and other thermoplastics.

    Plasticizer BASF markets its Ultrason® brand of polyethersulfone (Ultrason® E), polysulfone (Ultrason® S), and polyphenylsulfone (Ultrason® P) under the Ultrason® trade name. In the electronics, automotive, and aerospace industries, the high-performance material is used to manufacture lightweight components, as well as in water filtration membranes and parts that come into contact with hot water or food.