Resin supply systems

An injector assembly comprising:

• a housing having a distal end and a proximal end;
• a chamber formed within the housing, the chamber being configured to have an adjustable volume;
• a piston configured to be located at the distal end of the housing and configured for adjusting the volume of the chamber by movement thereof relative to the proximal end of the housing;
• an injector head configured for retaining a pouch within the housing wherein the pouch comprises a body portion configured to form a material reservoir for an injectable material, and a connector portion configured to be in fluid communication with the body portion for providing a material supply from the material reservoir in the body portion, and wherein the body portion is configured to be compressible to provide the material supply through the connector portion in accordance with applied hydrostatic pressure;
• and
• a motor configured to control the movement of the piston within the chamber;
• wherein the piston is configured to apply a hydrostatic pressure to the body portion of the pouch, and the chamber further comprises a pressure sensor for sensing the hydrostatic pressure within the chamber.

A method for injecting material into a mould using an injector assembly, the method comprising the steps of:

• connecting a pouch containing material to be injected to an injector head, wherein the pouch comprises a body portion configured to form a material reservoir for an injectable material, and a connector portion configured to be in fluid communication with the body portion for providing a material supply from the material reservoir in the body portion, and wherein the body portion is configured to be compressible to provide the material supply through the connector portion in accordance with applied hydrostatic pressure;
• attaching the injector head to the injector assembly with the pouch within the chamber of the housing;
• connecting the pouch to a mould;
• compressing the pouch to dispense material from the pouch for the mould;
• and
• e) sensing hydrostatic pressure within the chamber.