Types and Processing
This section describes the 3 different types of soles for footwear produced by the Stella Sole Factory.
The most complex, yet versatile sole is the pre-milled variety.
Indeed, pre-milled soles have an advantage over the other types, in that they can be custom-designed according to the client’s indications and specific requirements.
The production of this type of sole begins when the tunit or leather sheet is cut. The sole is then milled using a template and the other processes gradually follow suit, including, for example, the application of the welt and the heel; or more simply, the decoration of a bally or tailed sole.
Pre-milled soles are usually constructed based on a design that is supplied by the client, in order to guarantee a near-to-perfect result. Unlike pre-milled soles, PU or TR soles do not necessitate this kind of processing, but need only be pressed and finished.
In fact these can be referred to as so-called “mould” soles, or articles which are created on the basis of a design that is originally reproduced as a wooden model and, once any changes have made, is subsequently transformed into an aluminium mould that is ready for use.
From this point on, neither the shape nor any of the other characteristics of the sole can be changed. The only variations possible are the application of inserts, such as leather straps or welts on the printed product.
The sole can be injected with either TR or TPU, depending on the client’s preferences and on the type of sole used, and it is then removed from the mould and painted. In this phase, a wide range of colours and finishes can be used freely, or, in the case of polyurethane soles, the soles are carded, in preparation for the next step, where the sole is covered by the client.
The strength of the Stella Sole Factory lies precisely in its ability to offer clients both solutions: to be in a position to satisfy clients who require large quantities produced with a mould sole in order to amortise the costs, and instead, clients who prefer a pre-milled sole, which can be repeatedly and continuously modified in order to meet their requirements.