Tooling and moulding, done in-house.
30 molding machines and our own tool room in a 45,000 sq ft IATF 16949 certified plant in Chennai.
Our Chennai shopfloor
Tooling and all three moulding processes under one roof at SIPCOT Irungattukottai, near Chennai.
Materials we process.
A wide range of thermoplastic and thermoset polymers, mainly engineering-grade resins: 40 grades across 13 polymer families.
Material grades by moulding process
Glass-filled and engineering plastics
Up to 45% glass-filled
PA6 and PA66 are our most-moulded materials: 15 grades in production, including glass-filled grades up to 45% GF.
Moulds built for abrasive materials
Glass-filled moulds are built in hardened, wear-resistant tool steels in our own tool room.
Material control in-house
Melt flow index, moisture and specific gravity testing in our quality lab, so materials are moulded dry and in spec.
Automotive and electrical experience
Glass-filled housings, connectors and structural parts for automotive and electrical customers.
| Polymer family | Category | Moulding process | Grades | Example brands / codes |
|---|---|---|---|---|
| Polyamide (PA6 / PA66, Nylon) | Engineering thermoplastic | Thermoplastic injection | 15 | Durethan, Ultramid, Technyl, ZieFLAM 6/66 series, Vampamid, Domo, Nylon 66 GF3H BK |
| Polystyrene (HIPS) | Engineering thermoplastic | Thermoplastic injection | 1 | Styrenix 476L |
| ABS | Engineering thermoplastic | Thermoplastic injection | 4 | LG ABS, ABS 25% GF, Inventa |
| Acetal (POM) | Engineering thermoplastic | Thermoplastic injection | 2 | Celcon M90NAT, Duracon |
| Polycarbonate (PC) | Engineering thermoplastic | Thermoplastic injection | 5 | Lexan, Makrolon, PC 500R |
| Modified PPE | Engineering thermoplastic | Thermoplastic injection | 1 | Noryl SE1 GF N3 |
| PBT | Engineering thermoplastic | Thermoplastic injection | 1 | Elcrin EXL9134B |
| Polypropylene (PP) | Commodity thermoplastic | Thermoplastic injection | 1 | 4100MH |
| LDPE | Commodity thermoplastic | Thermoplastic injection | 1 | LDPE |
| TPU | Elastomer | Thermoplastic injection | 1 | Elastollan C55A85 |
| Upcycled material | Engineering thermoplastic | Thermoplastic injection | 1 | PP, PA66, PC-ABS |
| Thermoset material | Thermoset | Thermoset injection | 5 | PM9630, PM2984, PM7021 |
| Thermoset material | Thermoset | Thermoset compression | 2 | NT315 Black, DMC 605 Black |
Tool manufacturing
We design, manufacture and maintain injection moulds in-house, so tooling is built for production from day one.
Capabilities
- Hot & cold runner multi-cavity
- 2-plate & 3-plate moulds
- Soft / prototype tooling
- Mould design & qualification
- Mould flow analysis (Moldex3D)
- DFM & DOE
Facilities
- CNC VMC (HAAS)
- CNC EDM
- Surface grinding
- SolidWorks & ZW CAD
- 3D printing
- Experienced tool designers & makers
Moulds for glass-filled materials
Significant experience building moulds for up to 45% glass-filled (GF) materials.
Premium tool steels
We build with proven tool steels for strength, wear resistance and long tool life.
C45
Versatile medium-carbon steel with excellent machinability and strength.
P20 & P20 HH
Pre-hardened tool steels, the standard for plastic moulds.
1.2344 & 1.2344 ESR
Hot-work steels with superior heat resistance and toughness.
Orvar Supreme
Premium steel with excellent toughness and polishability for demanding tools.
Calmax
Cold-work steel with high wear resistance and impact strength.
Unimax
High-hardness steel for extreme wear and longer tool life.
Why buyers choose TPI
Tool and parts from one supplier
The team that builds your mould also runs it in production, so problems are fixed in the tool.
Trialled on our own presses
Every mould is sampled on our presses from 50 to 650 T before parts are approved.
Built for long production runs
Proven tool steels and in-house maintenance keep tools running for years.
Mould design
Thermoplastic injection moulding
Engineering and commodity thermoplastics on 18 presses, including insert moulding.
Machines
18 pressesMaterials
Insert moulding
Moulded-in inserts, plus inserts added after moulding by ultrasonic welding and heat staking.
Sample parts
Tap a photo to enlarge
Thermoset injection moulding
Heat-resistant, dimensionally stable phenolic parts, including insert moulding.
Machines
5 pressesAuxiliary equipment
- Auto-deflasher
- Post-cure ovens
Materials
Insert moulding
Moulded-in inserts, plus inserts added after moulding by ultrasonic welding and heat staking.
Why buyers choose TPI
A legacy thermoset specialist
Over 30 years of moulding phenolic, DMC/BMC and SMC: a rare, specialised capability among Indian moulders.
Moulds built in-house
Our tool room designs, builds and maintains thermoset moulds, so tool changes and repairs happen on site.
Automotive-grade quality
IATF 16949 and ISO 14001 certified, with APQP, PPAP, PFMEA and SPC documentation for every part.
Sample parts
Thermoset compression moulding
Over three decades of compression moulding, with oil-heated moulds and insert moulding.
Machines
7 pressesAuxiliary equipment
- High-frequency pre-heaters
- Pelleting machine
- Auto-deflasher
- Ovens
Materials
Insert moulding
Moulded-in inserts, plus inserts added after moulding by ultrasonic welding and heat staking.
Why buyers choose TPI
A legacy thermoset specialist
Over 30 years of moulding phenolic, DMC/BMC and SMC: a rare, specialised capability among Indian moulders.
Moulds built in-house
Our tool room designs, builds and maintains thermoset moulds, so tool changes and repairs happen on site.
Automotive-grade quality
IATF 16949 and ISO 14001 certified, with APQP, PPAP, PFMEA and SPC documentation for every part.
Sample parts
Value-added services
Parts that arrive ready for your line, with engineering support from concept to production.
Pad printing
Logos, markings and part numbers printed on moulded parts.
Heat sealing
Sealing of assemblies and components after moulding.
Heat-transfer labelling
Durable labels applied directly to parts.
Drilling & tapping
Secondary machining of holes and threads.
Sub-assembly
Assembly of multiple components before dispatch.
Technical guidance
Part and mould design support, DFM and 3D printed prototypes.
Send us your drawings.
2D/3D files, annual volumes and raw material, and we'll come back with DFM and costing.