Low pressure
ST-C low-pressure metering machines
Dynamic mixing for flexible, integral-skin, rigid and semi-rigid foams.
Safety and fashion footwear
Soles, insoles and direct injection onto the upper with the STAR 300S line.
Soles, insoles and direct injection onto the upper, single or dual density.
The process
How polyurethane is used in footwear
Footwear was one of Sulpol’s first markets. Soles, insoles and direct injection onto the upper call for exact metering, homogeneous mixing in two-component and multi-colour work, quick colour and mould changes, and stations arranged so the operator — or the automation — keeps a steady pace.
The STAR 300S line combines metering of up to 7 kg/min at a 1:1 ratio, modular mould carriers from 6 to 36 stations and up to 5 colours. It ranges from the classic model to the automated STAR 300S-R, which can exceed 500 pairs per hour in safety soles.
Steps
Typical process flow
- 01 Mould Opening, preparation or upper positioned.
- 02 Metering Single or dual density, up to 5 colours.
- 03 Closing Manual, double or synchronised automatic.
- 04 Curing Carousel or tower rotation.
- 05 Demoulding Sole or shoe removal.
Reference flow. Each project defines the steps included and each supplier’s responsibilities.
Diagnosis
Questions to start the project
You do not need every answer. They structure the conversation with our engineering team and with your PU system supplier.
Send my answers- Q1 Sole, insole or direct injection onto the upper?
- Q2 Safety or fashion footwear? Single or dual density?
- Q3 Polyether or polyester system? How many colours?
- Q4 How many stations and how many pairs per hour?
- Q5 Manual, semi-automated or automated operation?
Related solutions
Equipment for footwear
Recommending a solution for this application does not replace analysis of the material and process.
Footwear
STAR 300S footwear line
Soles, insoles and direct injection onto the upper: up to 36 stations, up to 5 colours, automated models.
Components
Polyurethane metering pumps
Gear and axial piston pumps for high- and low-pressure metering.
Other applications
Application engineering
Tell us what you need to produce.
We will look at your application, target output and metering requirements to assess the right equipment configuration.