03/Core capability
Plastic Injection Moulding
Injection moulding of engineering plastic components on 80T–450T horizontal and vertical machines, for prototype batches and regular production, from moulds we build and maintain ourselves.
Overview
Injection moulding services backed by our own toolroom
A consistent moulded part depends on three things: a well-built mould, the right machine, and a process that is set and held.
We run your parts on machines from 80T to 450T, chosen to suit the part’s projected area, shot weight and the mould. Because the moulds are designed and built in our toolroom, tool corrections and maintenance happen alongside the machines instead of being sent out.
Typical work ranges from pilot batches during development to repeat production of connector bodies, housings, enclosures, covers and insert-moulded parts.
| Parameter | Capability |
|---|---|
| Clamping force | 80T to 450T |
| Machine fleet | Ten machines (IMM-01 to IMM-10): 9 horizontal servo-toggle presses & 1 vertical rotary press |
| Machine makes | Hyundai, Zhafir Plastics, Yuhdak |
| Insert moulding | Vertical machine with rotary table for insert loading (IMM-10) |
| Volumes | Prototype and sample runs through to series production |
| Polymers | PA6, PA66, POM, ABS, PC, PBT, PP with dehumidifying hopper drying |
| Tooling | Single and multi-cavity moulds built in-house |
View complete 10-machine schedule (IMM-01 to IMM-10 with tonnages & drives) →
Process
How your parts are moulded
Material preparation
Material is checked against the specified grade and dried where the polymer absorbs moisture, as PA, PBT and PC do.
Mould setting
The mould is mounted, cooling connected and the machine chosen to suit the tool and shot size.
Process setting
Injection speed, pressure, hold and cooling are set, and first-off parts are checked before the run is released.
Production
Parts are moulded with periodic checks on critical dimensions, flash, sink and appearance.
Inspection & packing
Final checks against the drawing, then packing suited to the part and the delivery route.
Technical capabilities
Moulding options for different part requirements
HorizontalHorizontal injection moulding
The main production route for housings, covers, connector bodies and enclosures across the 80T–450T range.
Vertical & insertVertical & insert moulding
Vertical machines with a rotary table for parts where metal inserts are placed into the mould before each shot.
Multi-cavitySingle & multi-cavity tools
Cavity count is matched to your annual volume, so tooling cost and part price are balanced for the programme.
DevelopmentPrototype & sample runs
Sample moulding on production machines so fit, function and material behaviour are proven before volume.
Clear partsTransparent mouldings
Clear parts where surface finish, flow lines and gate position need extra attention in tool and process.
SupplyRepeat production supply
Components moulded, inspected and packed to an agreed schedule for your assembly line.
Materials & Polymer Processing
Engineering & commodity polymers processed in regular production
Every material claim reflects active processing capability. Engineering polymers are dried in dedicated hopper dryers, and mould temperatures are regulated to control shrinkage and warpage.
1. Engineering Polymers & Reinforced Grades (Core Production)
| Polymer | Grades & Processing Controls | Typical Industrial Uses |
|---|---|---|
| PA6 & PA66 (Polyamide / Nylon) | Unfilled, 15%–30% Glass-Filled (GF), impact-modified. Dehumidified in hopper dryers below 0.15% moisture before moulding. | Structural brackets, sensor bodies, industrial clips, connector housings |
| POM (Acetal / Delrin) | Homopolymer & copolymer grades. High dimensional stability, low friction coefficient, tight shrinkage compensation in tool design. | Gears, slide bushes, internal latch mechanisms, retaining clips |
| PBT (Polybutylene Terephthalate) | Unfilled and 15%–30% GF grades. Excellent dielectric strength, heat resistance, low water absorption. Dried prior to moulding. | Electrical connector bodies, terminal blocks, ignition components |
| PC (Polycarbonate) & PC-ABS | Optical clear grades, flame-retardant (FR), and impact-modified blends. Processed with hot-oil mould temperature control. | Transparent lens covers, protective guards, rugged electronic enclosures |
2. Commodity & General-Purpose Polymers
| Polymer | Grades & Characteristics | Typical Industrial Uses |
|---|---|---|
| PP (Polypropylene) | Homopolymer, random copolymer, and block copolymer. Chemical resistance, fatigue resistance for integral hinges, low density. | Caps, plugs, living hinge closures, electrical pit chamber fittings |
| ABS | Medium and high-impact moulding grades. High surface gloss, dimensional stability, good paintability and ultrasonic weldability. | Enclosures, covers, control bezels, two-part terminal housings |
| HDPE & LDPE | High and low-density polyethylene. Excellent chemical inertness, flexibility, impact resistance. | Protection caps, sealing plugs, dust covers, industrial liners |
Need grade selection advice? Read our guide on Choosing a plastic for industrial components
How an injection mould works
Clamp, inject, open, eject
Every shot runs through the same four stages. The two-plate mould we design and build controls each one — holding clamp force against injection pressure, packing the cavity, cooling the part, then ejecting it cleanly before the next shot begins.
An illustrative sequence, not a specific customer tool.
Clamp
The two mould halves close and are held shut under 80T–450T clamping force, sealing the cavity against injection pressure.
Inject
Molten polymer is injected into the cavity and held under pressure, packing out the part as it starts to cool.
Open
Once the part has cooled and set, the clamp releases and the moving half retracts at the parting line.
Eject
Ejector pins push the finished part off the core; the mould closes again and the cycle repeats for the next shot.
Quality considerations
What we check on moulded parts
- First-off parts measured before a run is released
- Critical dimensions checked at intervals during production
- Visual checks for flash, sink marks, short shots and flow lines
- Material and drying verified for moisture-sensitive polymers
- Final inspection before packing, with records on request
Applications
Where our injection moulded parts go
Related capabilities
What is plastic injection moulding?
Molten polymer is injected into a closed steel mould, held under pressure while it cools, and ejected as a finished part. The cycle repeats for every shot, which makes injection moulding the most economical process for plastic parts once volumes justify the mould. Our practical guide explains the cycle in detail.
What types of components can you mould?
Our current work includes connector bodies and housings, enclosures and terminal housings, covers, panels and clips, earthing pit chambers, insert-moulded components and transparent mouldings. For anything else, send the drawing and we will confirm feasibility.
Which plastics do you process?
We routinely mould PA6, PA66, POM, ABS, PC, PBT and PP. Other grades can be reviewed against your specification before we quote.
What machine sizes do you have?
We run ten injection moulding machines from 80T to 450T clamping force, including horizontal and vertical machines. See Machines & Equipment.
Can you mould parts with metal inserts?
Yes. Vertical machines with a rotary table are used where inserts are loaded into the mould before each shot. See insert-moulded components.
What affects the cost of an injection mould?
Part size, number of cavities, undercuts that need sliders or lifters, surface finish, tolerance on critical features, the tool steel and expected tool life, and whether a hot or cold runner is used.
What information do you need to quote?
A 2D drawing and 3D model if available, material grade, annual quantity and batch size, critical dimensions, surface finish and any assembly requirements. Our RFQ checklist covers each item.
Moulding enquiry
Discuss your moulding requirement
Send your part drawing and annual volumes. We will confirm the machine, tooling approach and material, and quote.