Innovation, efficiency and adaptability – these are the principles that guide our technological processes.
We develop and manufacture rubber components based on consolidated technical know-how, covering extrusion, injection and vulcanization processes, adapted to the functional and constructive requirements of each application.
- From Prototype to Series Production
Precision in Process. Consistent Performance.
Our approach emphasizes process control, dimensional stability and production repeatability, from prototyping to series production.
Our partners
Industrial Capacity and Technical Expertise
3,000 kg extruded rubber
For tubes and profiles with diverse geometries.
6,000 mc steam vulcanization
For material stability and performance.
6,000 ml braiding capacity
For hoses with textile reinforcement.
1,000 injection cycles
For technical parts with controlled tolerances.
- PARMEL GOMMA Capabilities
Profile and Hose
Extrusion
Extrusion consists of forcing an unvulcanized rubber compound through a die with defined geometry, under the action of pressure and temperature, resulting in a product with constant cross-section and theoretically unlimited length.
Essential Steps of the Production Process
01
Rubber Compound Preparation
The compound is formulated according to the application (chemical, thermal, mechanical resistance).
02
Extrusion Proper
The material is pushed through the die, which defines the final shape of the cross-section.
03
Cooling and Cutting
The profile is dimensionally stabilized and cut to the required lengths.
04
Vulcanization
Hoses are mounted on mandrels or vulcanized freely.
- PARMEL GOMMA Products Manufactured by Extrusion
Rubber Tubes, Hoses and Profiles for Technical Applications
Rubber Tubes
Simple or for subsequent reinforcement.
Hoses
Which will subsequently receive textile reinforcement plus an outer protective layer.
Rubber Profiles
For sealing, protection or guidance.
Results You Achieve
- Continuous and repetitive geometries
- High flexibility and adaptation to complex paths
- Good control of dimensions and tolerances over long lengths.
Limitations:
- Allows only constant cross-sections (not complex 3D shapes)
- Local details are more limited than with injection molding
- Requires additional operations for complex finished products (reinforcement, bending, assembly).
- Our Capabilities
Compression and Injection Molding for Technical Parts
Compression and injection molding are processes used for manufacturing rubber parts with defined geometry and controlled functional properties. Compression molding consists of compressing unvulcanized rubber in a heated cavity, being a robust process, suitable for compact parts and applications with moderate dimensional requirements. Injection molding involves plasticizing and injecting rubber under pressure into a closed mold, ensuring uniform material distribution and superior dimensional control.
Compression molding is frequently used to produce gaskets, buffers and solid parts, while injection molding is used for complex technical parts and rubber–metal assemblies. The differences between the two processes are reflected in precision, repeatability, cycle time and the investment required for industrialization. Compression molding represents an efficient and economical solution for small and medium series, where process robustness and simplicity are priorities, while injection molding is the preferred process for repeatable production, larger volumes and applications with strict tolerances. The choice of optimal process depends on the part function, geometric complexity, quality requirements and target production volume.
Examples of manufactured products:
- Direct Benefits
Technological Advantages
Direct Process Control
Flexibility in Product Development
Efficient Prototype–Series Integration
Technical-Economic Optimization
Traceability and Quality Control
Supports monitoring of critical parameters and management of non-conformities.
Technical Reference for External Sourcing
- Expertise and Differentiation
Quality Control and Product Testing
The experience accumulated through diverse projects enables us to consistently address increasingly demanding applications.
Material Control
- hardness measurement (Shore A) for compound consistency
- mechanical resistance checks (tensile strength, elongation at break)
- evaluation of elastic behavior (compression set)
- visual and homogeneity checks of the compound.
Component Control
- dimensional measurements (caliper, dedicated gauges)
- visual inspection for identification of surface defects
- functional checks, depending on the application (sealing, assembly, integrity)
- For products intended for fluid transfer, leak tightness and pressure resistance tests may be performed, according to requirements defined together with the customer.
Monitoring and Traceability
- Critical process parameters are monitored to ensure production repeatability, and control results are documented and used in non-conformity analysis and continuous process improvement.
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