XT135/B 415g 12k Tooling Prepreg Carbon (1250mm)

XT135 is a specialist tooling prepreg system designed to produce dimensionally accurate carbon fibre composite moulds using vacuum bag and oven cure only (out-of-autoclave).

The tooling system is made up of XT135/S surface ply and the XT135/B carbon fibre tooling prepreg backing ply listed on this page.

A lightweight composite mould suitable for modest production volumes can be produced using just one surface and two backing plies (subject to mould geometry) whilst the recommended laminate for a production mould is one surface and four backing plies. See technical datasheet for full details on suggested layups and layup considerations.

Typical Uses

XT135/B is an out of autoclave tooling prepreg backing layer part of the XT135 tooling system developed specifically for out-of-autoclave cure and as such uses a special gelcoat-like filled resin surface. XT135 should be used for the production of composite tools for cure and use out-of-autoclave.

If tools are required for autoclave use then we would suggest our XT180 or XT210 autoclave-cure tooling systems which don’t require filled resins and therefore offer slightly superior shrinkage and higher service temperatures.

The Sample Pack Contains two 400x300mm (15.7x11.8") pieces of pre-preg.

Further Information

Use in Conjunction with CNC Machined Patterns

XT135 is ideal for use with CNC machined patterns to provide a sophisticated means of producing highly accurate composite moulds from a 3D CAD design.

The 3D CAD designed component is CNC machined from a high quality epoxy tooling board such as EB700 Epoxy Tooling Board including any flanges or splits that are required. The machined pattern is lightly finished by hand and then sealed and glossed using S120 Advanced Board & Mould Sealer. The pattern is then prepared using Easy-Lease Chemical Release Agent and is now ready to be used to produce the female mould using the XPREG® XT135 prepreg tooling system.

For a lightweight mould, a single layer of XT135/S surface ply is layered directly onto the prepared epoxy tooling board pattern. Two layers of XT135/B backing ply are then added to the laminate. The laminate is then vacuum bagged (using R120 P3 release film and BR180 breather) and then oven-cured under vacuum (see technical datasheet for cure cycle).

Once cured and post-cured, the resulting mould will be a highly accurate, temperature stable mould ideally suited for use with prepregs such as XPREG® XC110.