The infusion process step by step.

e

What is the infusion?

The infusion consists of dry stacking the different layers of fibres (on the GelCoat or not) inside the rigid mould and vacuum packing the whole assembly with the help of a hermetic membrane.

The layers are impregnated by the migration of the resin sucked in by vacuum along a drainage channel.

This process allows a higher fibre volume rate (60% compared to 40% in contact moulding), better protection of the operators while maintaining the possibility of producing large parts.

Below is a schema describing the infusion process for a boat hull mould:

Composite resin systems for infusion

	Property
Araldite^® LY1564 / Aradur^® 3486	Araldite^®LY 1564 / Aradur^® 3486 is laminating system with low viscosity and high flexibility.
Araldite^® LY1564 / Aradur^® 3487	Araldite^® LY 1564 / Aradur^® 3487 is laminating system with low viscosity and high flexibility. The reactivity may easily be adjusted to demands through the combination of both hardeners.

Vacuum devices for infusion – Airtech auxiliary products.

Airtech Advanced Materials Group is the leading manufacturer and supplier of vacuum bagging products in the field of composite materials. Airtech is a supplier to major players in the aerospace, aeronautics, automotive, wind energy, motor sport and other markets.

Peel ply
		Applications
	Airtech^®Econostitch^® G	L’Econostitch® is an economical peel ply with good performance when used with both polyester and epoxy resins
	Airtech^®Econostitch^®	L’Econostitch® is a nylon peel ply with red tracers which make this peel ply more visible before and after a cure, reducing the possibility of the peel ply being left on the part

Release films
		Applications
	Airtech^®Wrightlon 3900 NP	Is a high elongation release film (500%) with excellent release properties. Ideal for compacting applications.
	Airtech^®Wrightlon 5200 B P3	Is a release film with good elongation and temperature resistance (260 ° C). It is easy to remove and allows the manufacture of complex shapes.

Retains less resin
		Applications
	Airtech^®GreenFlow 185	Is a economical retains less resin very used in infusion process
	Airtech^®Knitflow 160	Knitflow 160 is designed to assist resin flow through the part during the vacuum assisted resin infusion process

Vacuum bagging films
		Applications
	Airtech^®Big Blue	The Big Blue L100 is a multilayer vacuum film available in wide width. It is economical and mainly dedicated to infusion.
	Airtech^®KM 1300	The Ipplon® KM1300 is a high elongation vacuum film. Excellent for prepreg molding or autoclave infusion.

Sealants
		Applications
	Airtech^®Cordon butyl AT200Y	AT200Y from Airtech is a sealant with excellent adhesion. It is ideal for composite applications up to 204 ° C.
	Airtech^®Airseal^®2	Is an economical sealant. It is recommended in composite applications at low and medium temperatures (up to 150°C).

Auxiliary products
		Applications
	Airtech^®Raccord nylon cannelé en “T”	Nylon Barb T Fitting
	Airtech^®Raccord nylon cannelé coudé	Nylon Barb Elbow Fitting
	Airtech^®Resin infusion connector RIC 1/2	The Airtech Resin infusion connector (RIC) provides inexpensive and efficient through bag connection for use with spiral tube vacuum manifold and resin feed lines for low temperature resin infusion application
	Airtech^®Barb fitting infusion valve	Barb Fitting Infusion Valve
	Airtech^®Poly spiral	Tubing for resin feed and vacuum connections. Can be easily cut and connected with range of coupling, elbow and T fittings.
	Airtech^®Poly tubing	Spiral tubing for resin feed lines and vacuum manifolds around part edge. Can be easily cut and connected with range of coupling, elbow and T fittings
	Airtac^®2E	Is a spray adhesive designed for temporary bonding. Airtac 2 LH can be used to hold dry materials on contours and vertical surfaces.