Primary Skills

Materials & Design

  • Materials selection

  • Product design and evaluation

  • Thermoplastics


  • Blow moulding

  • Extrusion

  • Health and safety

  • Injection moulding

  • Quality

  • Thermoforming


  • Energy management

  • Sustainability management


  • Expert witness


  • Automotive

  • Electrical / electronic

  • General

  • Medical

  • Packaging

Other Skills

  • Authoring

  • Project management

  • Training (incl online)

  • Troubleshooting

Other Skills


  • IBM

  • ISBM


  • Energy surveys and training

  • Carbon footprinting and training

  • Sustainability training for plastics processors


  • Project assessment

What we do

Tangram is the leading international consultancy for energy management in plastics processing. We provide the following services:

  • Energy surveys for plastics processors.
  • Energy management training for plastics processors.
  • Technical authoring services.
  • Quality management for plastics processors.
  • Cost management for plastics processors.
  • Sustainability management for plastics processors.

We are experts in reducing energy use in plastics processing and work with large international processors on corporate programmes to reduce energy use, save money and improve the carbon footprint of operations.

Some of our completed projects are:


  • Organisation and management of Business Workshops for the UK plastics industry on the customer needs.
  • Implementation of improved product development systems for extrusion companies
  • Development of wood-plastic composite materials and product designs.
  • Author of ‘Cost Management in Plastics Processing – Strategies, targets, techniques and tools’, Elsevier.
  • Author of ‘Energy Management in Plastics Processing – Strategies, targets, techniques and tools’, Elsevier.
  • Author of ‘Quality Management in Plastics Processing – Strategies, targets, techniques and tools’, Elsevier.
  • Author of ‘Sustainability Management in Plastics Processing – Strategies, targets, techniques and tools’, Elsevier.
  • Author of ‘Plastics Profile Extrusion’, RAPRA publication.
  • Preparation of ‘Energy Efficient Plastics Processing’ manual for plastics processors.
  • Conduct of benchmarking exercises for energy use in injection moulding and extrusion blow moulding.
  • Training for effective Project Management.
  • Expert Witness reports on colour changes in PVC-U products.
  • Training for improved production management systems.
  • New product design, assessment and review.
  • Preparation of technology expert reports.
  • Review and implementation of Quality Management Systems for processors.
  • Review and implementation of Environmental Management Systems for processors.

Energy Management

  • Energy use surveys and energy reduction guidance for plastics processors.
  • Energy Management training for plastics processors.
  • Energy Management training for glass processors.
  • Waste Minimisation
  • Waste minimisation surveys and waste reduction guidance for plastics processors.
  • Waste minimisation training for plastics processors.
  • Preparation of expert reports on technology status.


Water management – 17th February 2021

Energy management – 10th February 2021

Carbon footprinting – 27th January 2021

Sustainability – 22 February 2022

Personal Profile

Dr. Robin Kent has a B.Eng.(Hons.) in Materials Engineering from Monash University (Australia) and a Ph.D. in Polymer Physics from the University of Surrey (UK).

Dr Kent has been involved with plastics processing since 1972 in a variety of sectors ranging from extrusion to injection moulding. He has many years experience in product design, having worked as Technical Director for several of the major plastics processing and window systems companies in UK and Europe. As an independent consultant, he has carried out energy surveys and assessments on over 500 companies throughout the world.

His publications include over 500 technical and management papers on plastics and windows and 10 books on plastics processing. He regularly lectures on energy management in plastics processing and materials technology throughout the world. He has chaired 5 committees setting standards for the UK plastics and window industry and is a regular judge for major plastics industry awards.

Dr Kent is a Chartered Engineer, a Chartered Energy Manager and a Fellow of the Energy Institute.

Dr Kent is a Liveryman of the Worshipful Company of Horners and Freeman of the City of London

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