The company runs 3 Banbury internal mixers for production (2x 50l, 1x12l).
The mixing shops are designed to ensure that conditions can be optimised for every mix. The “masterbatch /colour” and “dedicated fluoroelastomer” mixers use dry PEEK seals, to eliminate oil contamination and aid cleaning. Air cooling is available for all compounds, as we use a number of cure systems where moisture control is a critical factor. Automated take-off to produce slab or strip is also available.
All mixers are fitted with Trendview recording software; temperature, power input, rotor speed, ram position and oil injection times are recorded for every mix . Information from this system together with information from the weighments system, rheology data and laboratory test results are stored in the company database to give a complete overview of the mixing process for every compound.
Extensive use is made of 2-stage mixing, where this can enhance compound consistency, and an invertor is used to ensure that the 1st batch of a first stage will also be the first batch of a second stage, ensuring consistency of dwell time.
Dispersion is measured for all new mixes, using a dispergrader, so that mixing routines can be adjusted where necessary to achieve optimium dispersive and distributive mixing of carbon black and other fillers.