Alan Harper Composites Ltd.

Technology for reusable vacuum membranes used in prepreg and infusion liquid molding processing of composites. Produces a range of silicone vacuum-membrane spray machines, plus ancillaries, including embedded heater cloth (250°C). REFLOW and Morph runners.

4 Gwel Avon Business Park
Gilston Road, Saltash
Cornwall, PL12 6TW GB


As Seen In CompositesWorld

RVB Infusion = Light RTM?
There is some difference of opinion as to whether parts infused under reusable vacuum bags (RVBs) are the equivalent of those produced by Light resin transfer molding (RTM). See why.

Reusable vacuum membranes: Coming of age?
Durable custom elastomeric bags cut consumables cost and boost rate production.

Product Categories of Alan Harper Composites Ltd.

Primary manufacturing equipment
  • Bladder molding equipment (formerly pressure bag)
  • Vacuum-assisted resin transfer molding equipment (VARTM
  • Other primary manufacturing equipment
Tools/tooling materials
  • Other tools/tooling materials
  • Tools
    • Integrally heated
    • RTM/resin infusion
    • Composite
      • Composite, other
  • Mandrels
    • Mandrels, inflatable
  • Tooling equipment, materials and supplies
    • Tooling prepreg
Auxiliary processing equipment, repair equipment, and supplies
  • Auxiliary processing equipment
    • Heaters
  • Composite repair equipment
    • Heater blankets
    • Heaters
    • Vacuum/repair tables (heated/unheated)
  • Supplies
    • Bleeder cloths
    • Breather cloths
    • Film and sheet
    • Quick disconnects for vacuum hoses
    • Vacuum valves and pumps
    • Wiping cloths
Fiber converting/prepreg manufacturing equipment
  • Metering/dispensing equipment
Fabricating services
  • Thermoset materials
    • Hand layup
    • Resin transfer molding (RTM)
    • Vacuum-assisted resin transfer molding (VARTM)