Why do we use vacuum assisted resin infusions?

By using a vacuum assisted resin infusion process, ACM&C is able to produce thick (and thin) laminates in fewer processes by removing resin-curing issues, such as exothermic run away. ACM&C can thereby produce low void content laminates, with good mechanical properties, by using standard fibre materials, which is ideal for manufacturing large and/or thick components.

Alex Newton, Founder and Head of Manufacturing at ACM&C:

“Why take the risk with vacuum assisted resin infusions? We believe that vacuum assisted resin infused composites offer a versatile and repeatable manufacturing method and have invested heavily in the technology. Hours of toiling. Caffeine fuelled days. Relentless questioning and tinkering. End result – a meticulous process that is now capable of producing up to 130mm thick laminates on a repeatable basis with the added advantage of lower exposure to resins for our technicians. Despite this achievement we are continually developing and learning and are all excited about the next developments and innovations to come from ACM&C.”

ACMC manufactured 130mm plus thick laminate

ACMC manufactured laminate


What is resin infusion?

Resin infusion works by laying fabrics, and other core materials, into the mould in dry form. A vacuum membrane is placed over the fabric to consolidate the ply’s and evacuate all air. Resin is then introduced into the fabric via a port through the vacuum membrane. The vacuum then draws the resin through the fabric, saturating the fibres which results in a homogenous laminate. This process is easy to repeat as all variables are controllable and thus multiple parts can be manufactured in an efficient and consistent manner.

Advantages of a direct resin infusion process:

  • process repeatability, due to integrated monitoring processes leading the operator through the various stages
  • improved quality assurances, with the option to record process data
  • facilitates the manufacture of complicated composite components, whether thin or up to 130mm thick
  • resin is delivered to the mould at the optimum pressure, temperature and in a de-gassed state without the risk of exothermic runaway
  • improved working environment and health & safety for operators, as the resin is enclosed
  • minimises waste, as there is no need to overfill with excess resin

Please contact us for further information.