Direct injection on upper

Automated process for manufacturing shoes with polyurethane soles.

Today the most advanced footwear technology for:

  • Reduced manpower
  • High production capability and efficiency
  • Consistency in features and quality of the products
  • Highest technical standards

Direct injection on upper

Automated process for manufacturing shoes with polyurethane soles.

Today the most advanced footwear technology for:

  • Reduced manpower
  • High production capability and efficiency
  • Consistency in features and quality of the products
  • Highest technical standards
Polyurethane 3 densities sole

Triple densities soles

SWAP and PLUS2 are the double-ring moulding systems patented by STEMMA. They allow to manufacture 3-densities direct injected soles or soles made with a TPU/rubber outsole and a 2-densities midsole.

Technologies developed to widen the range of articles made by direct injection on upper, that allow new aesthetical and functional combinations, with soles with different densities zones and technical characteristics.

V.A.R. system

VAR, (video assisted report), is the innovative STEMMA system for the monitoring of dosing and injection processes of polymer mixtures.

A sophisticated integrated system made of sensors and dedicated software that ensures the recording and the systematic monitoring of the main process parameters. It allows to identify deviations from standard values, which may lead to malfunctions or that can indicate need for maintenance.

An extremely useful technical support especially for less experienced operators.

polyurethane direct injection machine operator
Hydrodinamic servo system dosing valves

Hydrodynamic servo-system

The dosing and injection valves with hydrodynamic servo-system keep the injection parameters stable for a life time up to 10 times longer compared with mechanical/pneumatical traditional systems.

This choice guarantees reduced downtime, operating reliability, maximum versatility for a wide range of materials.