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Expert Transformation of Products to Granules

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Your Strategic Partner in Contract Granulation

At Exwold, we specialize in transforming your raw products and complex formulations into high-performing granules. Our versatile processing technologies are designed to meet the rigorous demands of the specialty chemical and agrochemical markets:

Roll Compaction: Ideal for heat-sensitive materials.
Extrusion: Precision shaping for uniform density.
Coating & Impregnation: Adding functional layers or active ingredients.
Pan Granulation: Versatile particle size enlargement.
Blending: Achieving homogeneous mixtures for batch-to-batch consistency.

Why Switch to Granules?

Converting to a granular format isn't just a physical change—it’s a strategic advantage. Partnering with us allows you to realize:

Superior Technical Performance: Achieve better flowability, precise dosing, and controlled release profiles.
Significant Cost Efficiencies: Lower packaging costs and reduced product loss during transport and application.
Minimized Environmental Footprint: Substantial reduction in airborne dust and cross-contamination risks.
Enhanced Workplace Safety: A cleaner, safer handling environment for your team by eliminating hazardous particulates.

Let’s Build a Better Product Together

Every formulation has its own set of challenges. Whether you're looking to scale up a pilot project or optimize an existing line, our experts are ready to assist.

Call us: +44 (0)1429 230340
Email us: enquiries@exwold.com

We’ll get back to you promptly to discuss your specific technical requirements.

Impregnation & Coating

Milling Options

Blending Solutions

Impregnation & Coating

With more than 30 years of heritage in extrusion technology, Exwold operates four dedicated manufacturing sites across the UK, specifically designed for contract processing. We operate as a pure service partner; as we do not manufacture our own brands, our focus is entirely on collaborating with clients to understand their functional requirements and engineer bespoke solutions.

Our capabilities include the production of precision-extruded granules ranging from 0.6mm to 2mm, with pre-mixes prepared to your exact specifications. Furthermore, the Exwold portfolio provides a comprehensive suite of granulation technologies, including roll compaction, to ensure the optimal delivery of your product.

Milling Options

Exwold offers a comprehensive suite of milling technologies designed to handle diverse material types and meet exacting particle size specifications. Our facilities enable seamless, multi-stage processing on a single site, supported by pre- and post-mill blending and sieving to ensure a "one-stop" supply chain solution.

Our core milling capabilities include:

Knife Milling: Ideal for producing coarse granules between 3mm and 25mm. This technology is frequently utilised to reduce solid or waxy materials into more manageable sizes. With an annual capacity exceeding 2,000 tonnes, we offer the flexibility to handle large-scale requirements alongside smaller campaigns from 1,000kg upwards.
Turbo Milling: For finer applications, our turbo mills achieve significant size reduction down to <75 microns. Every batch is overseen by our experienced Quality Control team to ensure the final product aligns perfectly with your specific technical requirements.

By integrating milling with our bespoke packing services, we provide a streamlined, end-to-end manufacturing partner for your most challenging formulations.

Blending Solutions

Blending and mixing are fundamental to operations across all five Exwold sites. Our expertise covers a broad spectrum of complexity, from simple two-component mixtures to highly intricate formulations involving multiple ingredients and low-level pre-mixes.

To ensure total consistency, the majority of our blending units are equipped with liquid addition spray systems, allowing us to produce perfectly homogeneous blends even when incorporating solutions.

Our Blending Equipment Portfolio

Ribbon Blenders: A versatile range with capacities from 1,000L to 10,000L.
Drum Blenders: Offering a 2,000L capacity for efficient batch mixing.
High-Shear Lödige Mixers: Ideal for more intensive mixing requirements and demanding formulations.

Integrated Supply Chain at Brenda Road

At our Brenda Road facility, we often combine blending with our other core technologies to provide a seamless manufacturing process. This integrated approach allows us to link blending directly with:

Milling & Sieving
Roll Compaction
Final Packing

By consolidating these stages on a single site, we reduce transit risks and simplify your supply chain.

Resources

Our Resources Section

Discover our range of support services and browse our resource library for in-depth case studies and capabilities. Access key reports, policies, and guides in our downloads area, or visit our media and FAQ sections for more information.

Useful Resources

Case Studies

Surface Coating Blending

A multinational company required a cost-effective 2mm granule of a waxy product used as surface coating additive .

The product had not been previously extruded. The material was supplied as a waxy solid block with a melting point below 100 ºC.

The material also required careful handling as it was corrosive and a significant aim was to reduce contact hazards.

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Surface Coating Additive Milling

Exwold was approached by a leading chemical company to process a range of automotive surface coating additives.

The surface coating additive is produced as a molten solid in drums. Once cooled it forms a waxy, solid mass. The material has a low melting point <50ºC. The client required this in physical form to charge into coating with a specific particle size distribution to ensure dispersion.

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Coating Processing

A powder coating manufacturer contacted us to establish whether a process could be established to recycle fines (the fine powder generated and removed during powder coating manufacture).

The company was sending around 10-25mt of fines to landfill each year and wanted to reduce the environmental and financial impact. The fines ranged in PSD but were typically 150 microns.

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Downloads

Supplier Code of Conduct

Exwold is committed to doing business responsibly, ethically and sustainably at all times.

The company adheres to the highest code of conduct and expects its suppliers to do the same. Exwold will only deal with suppliers, consultants and distributors who conduct business in an ethical and responsible manner. Our supplier code of conduct ensures we work together.

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Booking In Form

Our booking-in form ensures every collection and delivery to site is managed safely, efficiently, and with transparency.

By confirming arrival times and key details in advance, we can prepare the right resources, minimise delays, and maintain a secure working environment. It also provides a clear audit trail for all shipments, helping us protect product integrity and meet regulatory and safety requirements.

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Reports

ESG Report 2025

Our ESG Report embodies our commitment to sustainability, ethical business practices, and transparency. Through this report, we detail how we measure and manage our environmental impact, uphold human rights and employee well-being, and enforce high standards of corporate governance. By doing so, we build trust with stakeholders and demonstrate accountability, showing that profitability and responsibility can go hand in hand.

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Particle Size Distribution

Particle Size Distribution (PSD) is a key factor that determines how powders and granular materials behave during processing and final use. Even with identical chemistry, variations can affect flow, stability, reactivity, and product appearance.

This guide outlines what PSD is, why it matters, and how effective measurement and control lead to greater efficiencies and quality.

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FAQ

Frequently Asked

Questions

Can you perform batch processing?

Exwold specialises in batch processing. Batch sizes vary from a few hundred kilograms to tens of tonnes. We also have continuous processing available with extrusion processes.

Do you sell your own products?

No. Exwold specialises in contract manufacture and in order to avoid any conflicts of interest with our clients, we have chosen to specialise only in contract processing and do not offer our own products.

Can you carry out multi-stage processing?

Yes our expertise and flexible plants allow us to combine processing technologies, for example, we regularly combine blending with our granulation capabilities.

What is your minimum order quantity for processing?

Exwold typically works in the 10 to 1000 tonnes range for clients but processes can be evaluated and adapted on a case by case basis depending on process requirements.

Our pilot facility allows us to produce trial quantities and the High Active Herbicide facility is designed to produce in volumes of 100Kgs upwards.

Can we visit Exwold to perform an audit?

We welcome all our clients to our sites so they can perform audits. We have accreditation to ISO 9001/14001/45001 standards and are looking for continuous improvements in our quality systems, so encourage all customer feedback.

Can you process foodstuffs and pharmaceutical products?

Our expertise is in the speciality chemical and agrochemical markets and as a consequence. Exwold does not currently offer services to the food or pharmaceutical markets.

Can you purchase raw materials for clients as well as manufacture?

Typically our customers prefer to source their own materials but Exwold is willing and able to source raw materials when required.

Our purchasing department can offer expert assistance in sourcing raw materials and packing requirements.

Can you do pre-production trials?

Yes. Our technical department is fully trained to perform and support pre-production trials. We often encourage trials before production so that we can evaluate any technical challenges and arrive at an accurate costing.

The technical development centre is well equipped to enable us to test all the technologies we have at scale.

Can you process solvents?

We tend to work mostly in aqueous phase, but can evaluate opportunities with solvents which have a flash point of >60°.

What quality, environmental and health and safety systems do you operate?

Exwold is certified to the ISO 9001/14001 standards.

In 2019 Exwold gained ISO 45001.

Where are you based?

We have five manufacturing sites which are all based in the North East of England near the town of Hartlepool.

This area has exceptional transport links to the rest of the UK and Europe.

Would you be prepared to buy capital equipment to meet a client’s processing needs?

At Exwold we regularly work with customers in this way and our engineering team can offer in-house expertise in plant modifications and design.

With our clients we have jointly invested over £4 million in plant and equipment.

Should we have concerns regarding contamination?

This is of critical importance to Exwold and it is the most asked question by our clients.

We have sophisticated clean-down procedures for every piece of processing plant and all our plants are accredited with ISO 9001/14001 status.

We operate a plant dedicated to high active herbicides and have warehousing and manufacturing separation between herbicides and insecticides.

Products are tested by a third party analytical company to detect residual impurities to low ppm levels.

Is Exwold sustainable?

Yes. Sustainability is a core focus at Exwold. We continuously invest in renewable energy, such as the solar panels at our Tofts Farm plant, and are actively installing new equipment across all sites to reduce plastic waste and environmental impact.

What type of packing does Exwold provide?

Exwold offers packing as an added value to bulk manufacture. We often hold the bulk in stock providing the ultimate flexibility to pack off as required.

We can pack small bottles for high active herbicides (100-1000g).

We are used to handling multiple packing SKUs for products and we pack from 1kg to 1000kgs in a variety of packaging types, including jerricans, paper and foil bags, kegs, FIBCs and bottles.

Can you provide supply product with 2D matrix labelling?

Yes. We have been investing in this capability following the regulatory requirement to include this when supplying crop protection products to countries such as France and Turkey.

How much will you charge me?

We look to offer competitive rates and, since every processing job is bespoke, we evaluate every opportunity on a case by case basis.

We are able to provide indicative prices at early stages of discussion to ensure project viability.

I know I want a granule made but not sure of how, can you help me?

Our technical team can help to determine which technology is best using their expert granulation knowledge and by asking a few simple questions such as granule size, specific physical properties required and application. From this they will suggest the best options to fulfil your needs.

The Technical Development centre can be used to assess whether this technology produces your desired granule and can support customer trials.