Mira Lanza S.p.a.

Ugo Nistri

Romano Baroffio

Giuseppe Ghisu

Paolo Colombo

Giorgio Padula

Enzo Chiellini

Giorgio Fonzi

The formation head comprises a casing of substantially rectangular configuration in plan view provided with a perforated flat bottom-screen or sieve, and with a top wall having a number of openings communicating with the atmosphere. Opening into said casing is a conduit for feeding a flow of air-fluidized disintegrated fibers. A plurality of spaced parallel, horizontal rollers are rotatably mounted close to the perforated bottom of the said head structure. The said rollers are supported so as to be translated parallely to the bottom of the said structure. The said rollers are each provided with a plurality of peripheral radial needles. At a short distance from the bottom of the casing, parallely thereto, a moving web is mounted, cooperating with an underlying vacuum chamber onto which the screened fibers are deposited in a thin layer (S).

Apparatus for uniformly distributing a disintegrated fibrous material on

A process for the production of a bleaching activator in granular form, in which an aqueous suspension of acetylated bleach activator is filtered to recover a filtration cake comprised of the acetylated bleach activator and having a moisture content of from 20 to 65% by weight; from 1 to 7 parts by weight of the filtration cake of step (a) is mixed and granulated with 1 part by weight of sodium tripolyphosphate in a granulator means to provide a granulated product; and the granulated product is dried to a residual moisture content of from 5 to 15% by weight to obtain the bleaching activator.

Process for the preparation of a bleaching activator in granular form

The continuous paper web, unwound from a feeding roll, is first passed through a perforation station to generate pre-established tear-off lines and then through a severing station where it is severed into sheets of the desired length. From the severing station, the web is advanced to the winding station, to which the cardboard cores supported at their ends by two idle mandrels are also supplied. The winding station is defined by two endless belts diverging from each other in the direction of the outlet from this station and moved at different speeds. At the inlet of the winding station, the cardboard cores are rotated by said belts, whereby the length of paper web advanced to said station by the lower belt is wound onto one of said cores. The so-formed roll is transferred to a discharge station, where it is released by disengaging the mandrels from the ends thereof. The two free mandrels are then transferred to a loading station where they pick up a new cardboard core.

Growing community of inventors

Genoa, Italy

Ugo Nistri