F
NOVA
SIEVING TECHNOLOGY PARTS, AT ITS FINEST by Giuseppe Cappelletti, Bühler Switzerland
NOVAPRIME is Bühler’s specially developed sieve fabric that is even better matched to the specifications and performance of the various plansifter types. The new Sieve Tensioning Service STS relieves staff of the timeconsuming cleaning and tensioning of the sieve frames.
P
lansifters are an important component of a modern flour mill. With their multiple sieves, they efficiently handle sifting and classifying of semolina and flours. During sifting, the large particles are separated from the finer ones and then sent through an additional grinding pass. The quality of the tensioning and the cleanliness of the sieve have an important influence on the quality of the flours and semolina.
Bühler exclusive
With “NOVAPRIME”, Bühler is now offering a sieve fabric that is even better matched to the specifications and performance of the various plansifter types. Made of polyamide synthetic twine exclusively for Bühler, the new sieve fabric complies with international mesh standards for medicine and food. This also guarantees that the size and mesh uniformity is as precise as possible.
54 | August 2018 - Milling and Grain
It is available in a variety of combinations of mesh width and thread weft as well as in a pre-cut format or on a roll. All new Bühler plansifters are equipped with the sieve fabric, and existing sieve frames can easily be stretched with the mesh.
Skill and dedication
The practice of cleaning and carefully tensioning the frame inserts is very work-intense, time-consuming, arduous and demanding. It takes not only a lot of skill and accuracy, but also a lot of dedication. Reasons enough to turn the tensioning work over to professionals. Bühler’s new STS is a professional tensioning service that meets the highest expectations for sanitation and accuracy. The Bühler Service Stations are all set up with the necessary equipment for the STS tensioning service. And the global network of Service Stations is steadily growing.
Washing machines and climate chambers
The new Sieve Tensioning Service from Bühler meets the highest standards of sanitation and accuracy. The sieve frames are cleaned in a special ‘washing machine’ that washes them and treats them thermally so that no bits of adhesive are left on the frame edges and 99.99 percent of all bacteria is killed. This professional new tensioning is performed by Bühler specialists meticulously by hand. NOVAPRIME is first conditioned in a climatic chamber according to the conditions in a plansifter before being tensioned. Then, following the customer’s detailed specifications, the mesh is tensioned and glued using the special Tensioning Table “NOVATENS”.
Inspections and certificates
The newly tensioned sieve frames are very carefully inspected after they have rested for at least three hours. Most important is measuring the tension. The results are prepared for each sieve in a so-called “TensioReport”. The strict inspection guarantees the quality and reliability of each newly tensioned sieve which is delivered back to the customer by the Service Station. Professional sieve tensioning increases food safety, extends the service life of the sieve and improves the separation, which improves final yield.