Capabilities
A complete-package service, from concept to finished product.
CPT provides an integrated capability set — from early design input through moulding, overmoulding, assembly, sterilisation and logistics — all conducted under a single ISO 13485:2016 quality management system.
What CPT does
Twelve integrated capabilities under one roof.
From LSR moulding cells and cleanroom assembly through to overmoulded electronics, packaging and sub-contract sterilisation, select any capability below to expand its detail.
Overview
Dedicated liquid silicone rubber injection moulding across a broad spectrum of platinum-cured LSR systems.
Highly efficient LSR moulding on Arburg and Maplan presses from 20 to 160 tonne, including our new MAPLAN MTF/160/100 edition S press, running multi-cavity cold-runner tooling for tight-tolerance medical components. Platinum-cured chemistry, low-particulate processing and repeatable cure profiles support drug-contact, patient-contact and implantable-grade applications.
Detail
- Platinum-cured LSR from all major suppliers (Wacker, Momentive, Dow, Elkem, Shin-Etsu)
- Shore hardness range from 5A to 80A
- Cold-runner multi-cavity tooling for high-volume consumables
- Optical, self-lubricating, low-friction and pigmented grades
- Typical dimensional tolerance ±0.02mm on precision features
- Press range
- 20–160 tonne
- Cavity counts
- 1 up to 64+
- Cure system
- Platinum addition
Overview
Silicone injection moulding across LSR and HCR systems, in a dedicated medical moulding environment.
Precision injection moulding of liquid silicone rubber (LSR) and high-consistency rubber (HCR) — from micro-components and thin-wall parts to multi-cavity consumables. Tooling, cure profiles and process monitoring are qualified within the ISO 13485 quality system with documented material traceability from batch to finished device.
Detail
- LSR and HCR silicone injection moulding
- Shore A hardness from 5 to 80+
- Cold-runner multi-cavity tooling for high-volume consumables
- Insert moulding of metal, ceramic and electronic components
- In-cavity pressure and process monitoring
- Material traceability from raw batch to finished part
Overview
Traditional compression presses supporting a wide range of polymer and elastomer formats.
Compression moulding remains ideal for HCR silicone, larger cross-sections, thick-walled parts and legacy tooling. CPT operates a bank of compression presses that complement injection processes and support small-batch, prototype and specialist material trials.
Detail
- High-consistency rubber (HCR) silicone
- Fluorosilicone, EPDM and specialist elastomers
- Large-cross-section and thick-walled parts
- Legacy tool re-life and transfer projects
- Small-batch and low-volume production runs
Overview
Transfer moulding for encapsulation, insert-heavy geometries and specialist elastomer parts.
Transfer moulding bridges compression and injection processes — pre-loading a measured charge and transferring it under pressure into a closed cavity. It is well suited to encapsulating fragile inserts, delicate electronics and complex insert arrangements without damage.
Detail
- Encapsulation of fragile inserts and electronics
- Multi-insert tooling for connector and sensor bodies
- Consistent flash control and cavity fill
- HCR silicone and specialist elastomer formulations
- Suited to short-to-medium production volumes
Overview
Room-temperature vulcanising and UV-cure silicone processing for prototypes, potting and low-volume moulding.
RTV silicones cure without heat, making them ideal for soft prototype tooling, encapsulation, gap-filling and delicate parts that cannot tolerate oven curing. UV-cure grades give rapid fixturing for fast-turn assemblies and repair work. CPT uses RTV alongside its LSR, HCR and transfer processes to cover the full moulding spectrum.
Detail
- Condensation and addition-cure RTV systems
- UV-cure and UV-accelerated grades for fast processing
- Potting, encapsulation and soft tooling
- Low exotherm and low-shrink options for delicate parts
- Prototype, repair and low-volume production applications
Overview
Moulding, assembly, printing, inspection and packaging within ISO 8 Class K (100,000) cleanrooms.
CPT operates ISO 8 Class K (100,000) classified cleanrooms with controlled temperature, humidity and particulate monitoring. Silicone moulding cells feed directly into cleanroom assembly, inspection and packaging — keeping components under environmental control from the moment they leave the tool.
Detail
- ISO 8 Class K (100,000) classified environment
- Gowned operator workflows and material airlocks
- In-line moulding, assembly, print and pack cells
- Environmental monitoring and validated cleaning regimes
- Suitable for sterile-barrier and drug-contact devices
- Classification
- ISO 14644-1 Class 8
- Equivalent
- Fed Std 209E Class 100,000
Overview
Encapsulation and overmoulding of LEDs, PCBs, sensors, wiring and rigid substrates in silicone or TPE.
CPT overmoulds sensitive electronics into robust, sealed silicone bodies for wearables, diagnostic probes, light-therapy devices and single-use surgical tools. Low-pressure LSR and controlled transfer processes protect delicate components while producing sterile-barrier, waterproof and biocompatible finished assemblies.
Detail
- LED, LED array and light-guide overmoulding for optical devices
- Flex and rigid PCB encapsulation with strain relief
- Sensor, thermistor and antenna overmoulding
- Cable, wire harness and connector overmoulding (IP67+ sealing)
- Rigid-to-soft bonding onto metal, ceramic and other rigid substrates
- Low-pressure LSR processes to protect delicate components
Overview
Front-end support for difficult, novel or early-stage silicone product enquiries.
CPT engineers work with customer teams from the earliest concept stages — advising on material selection, part geometry, tooling strategy and process route. We invest in low-volume trials and specialist tooling to de-risk novel products before committing to production tooling.
Detail
- Design-for-manufacture (DFM) reviews
- Material selection and shortlist trials
- Prototype tooling and short-run validation
- Process development and Cpk studies
- Support at inception on unusual or difficult enquiries
Overview
Flexible investment in prototype tooling, novel materials and specialist processes.
A dedicated in-house tooling relationship enables fast-turn prototype and low-cavitation trial tools, alongside production multi-cavity cold-runner systems. This supports the full lifecycle — from small R&D projects to blue-chip production runs of millions of pieces per year.
Detail
- Prototype and single-cavity trial tools
- Production multi-cavity cold-runner LSR tooling
- Insert, over-mould and two-shot tool designs
- Tool maintenance, refurbishment and transfer
- Scale-up path from trial to validated production
Overview
On-site assembly, sub-assembly and kitting of finished components, including within the cleanroom.
CPT assembles silicone and polymer components into finished devices and sub-assemblies — from simple bonded pairs to complex multi-part kits. Semi-automated fixtures, poka-yoke tooling and validated processes support high-mix production while maintaining full lot traceability.
Detail
- Manual and semi-automated assembly cells
- Adhesive, ultrasonic and mechanical joining
- Functional test and 100% inspection options
- Kitting of multi-component finished sets
- Cleanroom assembly for sterile-barrier products
Overview
Tyvek pouching, blister packing, custom labelling, indicators and bleed dye pen testing.
Validated packaging workflows cover breathable sterile-barrier pouches and formed blister trays, in-line label application, sterilisation indicators and dye-penetrant seal testing. Processes are qualified for ethylene oxide (EO), gamma and steam sterilisation routes.
Detail
- Medical-grade Tyvek pouching and header bags
- Formed film and blister tray packaging
- Custom label design with lot code, expiry and barcode
- Sterilisation dot / indicator application
- Bleed dye pen and seal-integrity testing
Overview
Managed final sterilisation and logistics to deliver finished, off-the-shelf ready product.
CPT coordinates validated sub-contract sterilisation through approved partners — EO, gamma and steam — and manages return logistics, warehousing and dispatch. Customers receive finished, released, sterile product ready for direct distribution or on-shelf sale.
Detail
- Ethylene oxide (EO) sterilisation coordination
- Gamma and steam sterilisation routes
- Documented sterilisation validation and release
- Warehousing, stock holding and call-off logistics
- Direct dispatch to customer, distributor or end user
Prototype to high-volume production
From R&D trials to established series production.
CPT supports the full manufacturing lifecycle. Early-stage customers make use of available capacity for low-volume R&D trials, novel materials and specialist tooling. As products mature, production scales into series manufacture, supplying validated components in significant annual volumes to established medical and life-science manufacturers.
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