Building a Packaging Powerhouse Through People, Process, and Technology with Koenig & Bauer
Paul Densley, Managing Director of Castle Color, shares his journey from the newspaper print industry to leading one of the UK’s most respected and technically advanced packaging companies. In this film, Paul talks openly about Castle Color’s philosophy of people, process, and technology, and how that mindset has shaped everything from investment decisions to customer relationships. He explains why Castle Color focuses on being an embedded supply partner, how continuous training and process understanding sit at the core of the business, and how technology is used to enhance people rather than replace them.
The conversation goes deep into Castle Color’s expertise in fiber-based packaging, including cartons, advanced barrier coatings, and highly specialized blister card technologies that are guaranteed to seal. Paul outlines the company’s diverse customer base across food, healthcare, hygiene, personal care, and sporting goods, and explains why the type of packaging matters more than the size of the customer.
Paul also reflects on Castle Color’s disciplined approach to machinery investment, including rigorous testing, supplier comparisons, and the long-term impact of choosing the right technology partner. He shares real-world experience of consolidating production onto fewer presses while increasing productivity, retaining and retraining staff, and building strong, long-term relationships with suppliers.
Looking ahead, Paul discusses the future of fiber-based packaging, sustainability, and how Castle Color plans to continue pushing the boundaries of packaging technology and design over the next decade.








