What is Thermoforming?
Thermoforming – also known as oven moulding – is a plastic fabrication technique that uses heat to form flat plastic sheets into complex, three-dimensional shapes. Once heated to a pliable forming temperature, the sheet is shaped over a mould using vacuum, pressure, or mechanical force, then cooled to maintain the new shape.
At Dipec, we specialise in precision thermoforming of plastic materials, delivering consistent, high-quality results for everything from small-scale prototypes to large production runs.
Precision Plastic Thermoforming Specialists
Thermoforming in Operation
Bespoke Plastic Thermoforming & Vacuum Forming
Thermoforming is a versatile manufacturing process ideal for creating complex, three-dimensional shapes from flat plastic sheets.
Our in-house capabilities are perfectly suited for:
- Custom-Moulded Engineering Components: Precision-formed parts tailored to your specific mechanical requirements.
- Industrial Protective & Decorative Panels: Robust, shaped panels designed for machine guarding, architectural features, or vehicle interiors.
- High-Strength Product Enclosures: Lightweight yet durable housings for electronic, medical, and industrial equipment.
- Cost-Effective Large-Scale Production: An efficient alternative to injection moulding for larger formed parts and medium-volume runs.
- Rapid Prototyping for Complex Contours: Fast development of curved or contoured shapes using bespoke jigs and moulds for immediate testing.
Large Format Thermoforming Capabilities
Our specialist facility features a large-scale thermoforming bed capable of processing plastic sheets up to 2.2m x 1.0m. This allows us to manufacture everything from compact instrument housings to oversized industrial panels with total consistency, ensuring high-quality results for even the most ambitious projects.
Heat-Formed Accuracy
Cost-Effective for All Volumes
Rapid Prototyping
Custom Jigs & Templates
Durable, Lightweight Results
Large Format Capability
Thermoforming Applications
Thermoforming is a versatile process that enables the creation of bespoke, three-dimensional plastic components with exceptional visual and functional quality.
Here are just some of the products and components we manufacture through thermoforming:
Retail & Commercial
- Display Covers
- Protective Screens
- Point-of-Sale Fixtures
- Custom Trays & Housings
Industrial & Engineering
- Machine Casings
- Protective Shrouds
- Formed Panels
- Process Equipment Guards
Transportation
& Defence
- Dashboards & Instrument Panels
- Lightweight Panels
- Equipment Enclosures
- Interior Claddings
Healthcare & Laboratory
- Equipment Housings
- Worktop Splashbacks
- Medical Storage Solutions
- Cleanroom Panels
Benefits of Thermoforming with Dipec
Choosing Dipec for your thermoforming needs means you get access to high-quality processes, precise results, and dependable service.
Bespoke Moulded Shapes
Our custom jigs and moulds allow us to form precise curves and contours tailored to your needs.
Efficient for Larger Sizes
Thermoforming is ideal for large plastic panels – quickly formed with consistency and minimal waste.
Lightweight yet Durable Results
Formed parts maintain their structural strength while reducing weight – perfect for transportation and equipment housing.
Fast and Cost-Effective
Compared to alternative methods like injection moulding, thermoforming provides excellent value for short-to-medium runs.
Our Thermoforming Capabilities
We operate high-performance ovens and vacuum forming setups capable of handling a wide range of plastic materials and thicknesses.
Our custom tooling and mould creation ensures each project is tailored precisely to your specification.
Plastic Materials
We work with a wide variety of plastic materials ideal for thermoforming, including:
Acrylic (Perspex®)
Polycarbonate
PVC
High Impact Polystyrene (HIPS)
PETG
Acetal
ABS
Foam PVC
Industries we work with
Our thermoforming plastic fabrication services are used across numerous sectors, including:
- Retail & POS
- Defence & Aerospace
- Industrial & Engineering
- Healthcare & Medical
- Education & Public Sector
- Transport & Automotive
Whether you require a run of shaped display panels or a series of technical enclosures, Dipec has the in-house capability to deliver results that meet your exact brief.
Why Choose Dipec for Thermoforming Services?
As specialists in plastic fabrication, we provide:
- Deep expertise in thermoforming plastics
- Custom mould and jig creation
- Rapid prototyping and repeatable production
- Skilled in-house team and advanced equipment
- Competitive pricing and reliable turnaround
Need Expert Thermoforming for Plastics?
Contact Dipec Today for a Quote.
Thermoforming Process at Dipec
We assess your product’s shape, size, and usage to determine the best moulding approach. Custom tooling is created to match your component’s exact form and function.
Flat plastic sheets are selected and loaded into the thermoforming machine. We align and secure the material based on its thickness and required mould depth.
The plastic sheet is heated until it reaches a pliable, forming temperature. Timing and heat levels are carefully adjusted for the material type.
Using vacuum, pressure, or mechanical forming, the heated sheet is shaped over the mould. It’s then cooled in place to retain the shape with accuracy and strength.
The formed part is trimmed, polished, or machined for clean edges and exact fit. We carry out quality checks before moving to assembly or delivery.
Proudly Manufactured in the UK -
Quality British Plastic Fabrication
At Dipec, all our thermoforming work is carried out in-house at our UK-based plastic fabrication facility. As a proud British manufacturer, we deliver premium-quality products supported by fast turnarounds, strict quality control, and exceptional customer service.
Every item we produce is made by our dedicated team of experts, combining decades of experience with state-of-the-art tools and technology.
Whether you’re looking for a one-off curved screen or thousands of moulded enclosures, Dipec has the skill, space, and systems to deliver.
- UK-based plastic fabrication facility
- High-quality British manufacturing
- In-house design, tooling & production
- Precision craftsmanship across every job
- Full quality assurance
- Fast turnaround times
- Minimal waste & environmentally conscious operations
By choosing Dipec for your thermoforming and plastic fabrication needs, you’re partnering with a UK-based specialist that puts quality, service, and innovation at the heart of everything we do.
Get in Touch
Ready to bring your next plastic fabrication project to life with our thermoforming services?
Contact us today for a free consultation or no-obligation quote.
Thermoforming FAQs
Thermoforming is a plastic fabrication process where a thermoplastic sheet is heated until it becomes pliable, then moulded over a form or template to achieve a specific shape. Once the material cools, it retains the new shape. This method is widely used to create three-dimensional plastic components such as covers, panels, trays, and housings.
Common plastics used in Thermoforming include acrylic (PMMA), polycarbonate, PETG, and ABS among others. Each material offers different benefits. For example, acrylic is excellent for transparent display products, while ABS provides strength and durability for industrial applications. The choice depends on the desired end-use, clarity, impact resistance, and thermal performance.
Thermoformed plastics are used in a variety of industries, including:
- Retail displays and point-of-sale units
- Protective machine covers and guards
- Museum and exhibition display cases
- Automotive trim and interior panels
- Food-grade packaging and trays
- Medical device housings and equipment covers
The process is ideal for both functional and decorative applications.
At Dipec, we can thermoform plastic panels up to approximately 2.2 metres x 1.0 metre in size. This allows us to accommodate large-format components, such as full-size display covers, protective panels, or sizeable curved signage, without compromising on strength or visual appearance.
Yes, Thermoforming is highly suitable for one-off prototypes, low-volume batches, and bespoke fabrications. Because it often involves lower tooling costs compared to injection moulding, it is a cost-effective solution for businesses needing custom-made plastic parts or small-scale production without committing to high tooling investment.
Thermoforming provides excellent shape retention and dimensional consistency, particularly when using CNC-machined moulds or jigs. While it doesn’t match the extreme tolerances of injection moulding, it is more than accurate enough for most applications, especially in retail, industrial, or architectural use.
Vacuum forming is actually a type of Thermoforming. It involves heating a plastic sheet and then using vacuum pressure to pull it over a mould. While the term “Thermoforming” refers to the broader category (which may also include pressure forming or drape moulding), vacuum forming is the most widely used method due to its simplicity, affordability, and efficiency for medium to large parts.
Yes. Once a part is thermoformed, it can be further processed using CNC trimming, drilling, line bending, bonding, polishing, and assembly. At Dipec, we often combine Thermoforming with our full suite of plastic fabrication services to create complete, finished products ready for installation or end-use.
Thermoforming offers numerous benefits for commercial and industrial clients:
- Cost-effective for medium to large parts
- Quicker turnaround compared to injection moulding
- Ideal for bespoke and batch production
- Durable and lightweight components
- Visually impressive finishes for display and branding
These advantages make it popular with industries such as retail, healthcare, construction, and exhibitions.
Thermoforming can be a more sustainable manufacturing option, especially when using recyclable thermoplastics like PETG and polystyrene. Off-cuts and waste materials are often collected and recycled, and because the process uses sheets rather than moulded pellets, there is generally less material waste. Clients can also specify eco-friendly materials for their projects.