Dual-textured pet foods and treats with crunchy exteriors and creamy centers are produced with co-extrusion. Petfood pillows are made with co-extrusion, is a 2-step process that combines two distinct characteristics: a crisp cereal based shell and a soft filling. The EVOLUM® pinching former offers maximum flexibility and creativity in shaping coextruded products in traditional or innovative shapes: pillows, triangles, tubes, bars, balls, sticks, ovals, diamond-shaped, and other specialty profiles.
For these products, the crispy outer shell ingredients are mixed, cooked and processed in the twin screw extruder, while the filling ingredients are mixed and prepared in a separate recirculating tank. At the extruder, a specialized co-extrusion die is used to combine the extrudate and filling into the final product. The filling is injected and as the materials exit the die, the outer shell expands around the soft inner filling.
The EVOLUM® pinching former offers maximum flexibility and creativity in shaping coextruded products in traditional or innovative shapes: pillows, triangles, tubes, bars, balls, sticks, ovals, diamond-shaped, and other specialty profiles.