Making dried fruit can be a fun family activity with a tasty end product. Dried fruit is a portable snack and it also can be used in recipes. Proper and successful drying produces safe food with good flavor, texture and color. Whenever you preserve foods, choose the best-quality fruits and vegetables. As with other food preservation methods, drying does not improve food quality.
Extrusion is a process used to create objects of a fixed cross-sectional profile. A material is pushed through a die of the desired cross-section.he products of extrusion are generally called extrudates. Hollow cavities within extruded material cannot be produced using a simple flat extrusion die, because there would be no way to support the center barrier of the die.
EXTRUSION plays a prominent part on the plastics industry. Extrusion, unlike moulding, is a continuous process, and can be adapted to produce a wide variety of finished or semi-finished products, including pipe, profile, sheet, film and covered wire. Water cooling of the screw. 2  Screw cooling hardens the layer of polymer adjacent to the surface and reduces the effective channel depth. 3  Replacing all or part of the metering zone section of the screw with a smear head attached to and revolving with the screw.