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GracoRoberts supplies composite process materials for aerospace and advanced manufacturing applications. These ancillary materials are used during composite layup and cure to control resin flow, manage vacuum integrity, facilitate part release, and achieve consistent surface quality in both autoclave and out-of-autoclave processes.
Our portfolio includes vacuum bagging films, release films, peel plies, breather and bleeder materials, sealant tapes, and tooling consumables from leading manufacturers including Airtech International. We also offer kitting and short roll services so materials arrive pre-cut or pre-slit to the format your production line requires.
For guidance on compatible prepreg and resin systems, see our prepregs page and resin systems page.
Nylon and polyester bagging films for sealing composite layups during cure. Available in standard and high-elongation formulations to accommodate complex geometry and deep draws. Products include Wrightlon nylon bagging films and Ipplon polyester films in a range of thicknesses and widths.
Perforated and non-perforated PTFE-coated and polyester release films that prevent the cured laminate from bonding to tooling or vacuum bag. Perforation pattern and coating selection depend on the resin system and desired surface finish. Products include Wrightlon, Airtech A4000W, and Release Ease series.
Woven polyester and nylon peel ply fabrics applied directly to the laminate surface to produce a textured, bond-ready surface after removal. Used to eliminate surface contamination and reduce pre-bond surface preparation requirements. Products include Airtech Release Ply F and G series.
Polyester and rayon breather and bleeder fabrics that maintain vacuum distribution across the laminate during cure and absorb excess resin where required. Products include Airweave polyester breather in a range of weights and widths.
Tacky sealant tapes for sealing vacuum bag film to tooling and achieving leak-free vacuum integrity during cure. Products include General Sealants GS 213 and Airtech AT-200Y series in standard and high-temperature formulations.
Vacuum bagging films, release films, and breather materials are essential consumables in autoclave processing of prepreg laminates. Correct material selection for cure temperature and resin system ensures consistent laminate quality and reliable part release.
High-elongation bagging films and infusion-compatible process materials support resin infusion and out-of-autoclave cure processes, enabling complex geometry and large-area parts without autoclave tooling constraints.
Short roll and kitted formats of process materials reduce material waste and handling time in low-volume and prototype production environments, supporting UAV, satellite, and defence programme builds where batch sizes are small.
Our process material range works alongside our composite bonding systems and surface prep and primers to support a complete layup, cure, and bonding workflow.
Peel plies produce a consistent, textured surface that is ready for secondary bonding without additional abrasion or cleaning steps, reducing preparation time and improving bondline consistency in structural composite assemblies.
We offer kitting and converting services for process materials, supplying rolls pre-slit to width, pre-cut to length, or combined in layup kits to reduce handling and waste on the production floor. This is part of our broader short roll composites service which also covers slitting and cutting of prepreg and fiber materials.
Compatibility between process materials, resin systems, and cure temperatures should be confirmed at the selection stage. We advise on material selection for specific cure cycles and tooling configurations.
We support qualification workflows for composite process materials, including lot traceability, shelf life management, and certificates on request. Our team can guide data sheet review, temperature rating confirmation, and approved sourcing for program compliance.
What we provide:
Need help selecting process materials for your layup and cure process? Talk to our team about solutions aligned to your production requirements.
We supply vacuum bagging films, release films, peel plies, breather and bleeder fabrics, and sealant tapes from Airtech International and other leading manufacturers. Products are available in standard roll formats and through our kitting and converting service.
Bagging film selection depends on cure temperature, part geometry, and whether autoclave or out-of-autoclave processing is used. Standard nylon films suit most autoclave cycles up to 200 degrees Celsius. High-elongation films are recommended for complex geometry. We advise on material selection for specific cure cycles.
Yes. Our kitting and converting service supplies process materials in the exact format your line requires, including slit rolls, pre-cut sheets, and layup kits.
Yes. We offer certificates on request, COA and COC, lot traceability, and shelf life management to support qualification and program compliance.
Woven polyester peel plies such as the Airtech Release Ply F and G series produce a textured, contaminant-free surface that is ready for secondary bonding. The correct peel ply depends on the resin system and required surface profile. Contact us for a recommendation.
