RefurbishmentRefurbishment
Recover. Reinforce. Reimagine.
At PENA, we believe that a worn screw or barrel is not the end of its lifecycle, but the beginning of a new, optimised stage.
Our refurbishment service combines technical analysis, advanced repair processes and engineering improvements to restore your components to original performance levels, or even exceed them.
Key Benefits
Immediate Cost Savings
Up to 40–85% lower cost compared to purchasing a new assembly.
Particularly advantageous for parallel twin barrels, conical twin barrels and complete screw sets.
Our interchangeable liner technology can dramatically reduce future investment and maintenance costs.
Performance Equivalent to New
Improved pressure stability, enhanced sealing performance and more efficient melt processing.
Reduced machine wear and process stability equivalent to, or better than, the original design.
Adapted to New Materials
Optimisation for WPC, fibre-reinforced compounds, recycled materials and highly abrasive formulations.
Alloy selection, geometry modifications and tolerance adjustments without replacing the entire production line.
More Sustainable, More Durable
Less scrap, lower steel consumption, reduced emissions and fewer replacement parts.
Extended overall service life and reduced unplanned downtime.
Interchangeable Liners
- Barrel technology specifically designed for counter-rotating twin-screw applications.
- Integrated structure providing maximum stability, rigidity and dimensional accuracy.
- Available liner lengths up to 1,750 mm.
- Allows replacement of only the worn liner while retaining the original barrel body, significantly reducing maintenance costs and intervention times.
Screw Refurbishment
- Restoration of original dimensions and tolerances.
- Alloy selection adapted to the processed polymer and operating conditions.
- Complete screw rebuilding and refurbishment.
- Renewed surface treatments and heat treatment technologies.
- Significantly extended service life.
- A cost-effective alternative to purchasing a new screw.
Comprehensive Maintenance & Upgrade Programme
Detailed planning
of component replacement schedules.
Precision inspections
and dimensional measurements fully documented and recorded.
Complete maintenance, refurbishment and performance improvement programme.
A structured maintenance system
designed to maximise equipment reliability.
Reduced unplanned downtime
through predictive monitoring and proactive recommendations.
Assembly Optimisation
- Improved profitability by extending equipment life and avoiding unnecessary machine replacement.
- Operational flexibility tailored to actual production parameters.
- Better adaptation to the process, material, product geometry and technical requirements.
Standard configurations do not always meet every production requirement.
Common Issues We Can Resolve
- Insufficient screw speed or output capacity.
- Excessive residence time causing material degradation.
- Incomplete or unstable melting performance.
- Injection capacity limitations.
- Plasticising units that are no longer optimised for current materials or production requirements.
Technical Analysis for the Ideal Assembly Size
Every polymer, formulation and application requires different processing conditions.
At Talleres Pena, we analyse:
- Required shot size or production capacity.
- Polymer type and thermal behaviour.
- Part geometry.
- Processing parameters.
- Target machine performance.
Based on this analysis, we define the optimum screw and barrel configuration, creating a plasticising unit perfectly matched to your production requirements.