Breathers-Bleeders

Product info

Breathers-Bleeders

Breathers and bleeders are essential components in vacuum bagging, ensuring consistent airflow and even pressure distribution throughout the laminate. These materials allow excess resin and trapped air to move freely to create void-free, high-quality composite parts. ATL supplies high-performance breather and bleeder fabrics designed for reliable processing in marine, defence, industrial and advanced manufacturing applications.

Breather / Bleeder

Breather / bleeder materials help maintain air evacuation pathways within the bagging stack. They support even pressure distribution and can contribute to improved laminate consolidation and surface finish.

Process
Temp

170°C

ATL

Econobleed
Breather/Bleeder

Econobleed is a non-woven polyester breather/bleeder with a medium-weight, low-profile and highly drapable construction. It conforms readily over contoured surfaces while supporting effective air evacuation, laminate compaction and controlled resin bleed during room- and elevated-temperature vacuum bagging processes.

Process
Temp

204°C

Airtech

Airweave^® N4
Breather/Bleeder

Airweave^® N4 is a medium-weight, non-woven polyester breather/bleeder designed for low-pressure curing. Its conformable structure promotes reliable air evacuation and controlled resin bleed across the laminate, supporting consistent compaction and processing performance.

Part	Description	Process Temp	Weight GSM	Width MM	Length LM
0V724	Econobleed: Breather–Bleeder	170°C	–	1450	24
0V728	Airweave N4: Breather–Bleeder	204°C	140	1520	96

Resin Feed Channel

Process
Temp

155°C

Airtech

Flowstrip^® Channel

Flowstrip^® is a lay-flat resin feed channel combining high-flow 3D mesh with a porous non-woven polyester sleeve. It is easy to cut, position and vacuum bag, providing efficient resin delivery across the laminate while connecting simply to Airtech infusion fittings.

Part	Description	Process Temp	Width MM	Length LM	Form
P4110	Flowstrip Lay-Flat Resin Feed Channel	155°C	100	100	Lay Flat Tube

Vacuum Breather Strip

Process
Temp

125°C

Airtech

Dahlpac^® Breather Strip

Dahlpac^® MC79 is a breathable strip material combining Dahltexx^® SP-2 with Greenflow^® 75 to maintain consistent airflow across the laminate without resin bleed-out. It supports complete wet-out, helps prevent dry areas where flow fronts meet and simplifies vacuum bagging with minimal part mark-off.

Part	Description	Process Temp	Width MM	Length LM	Form
V770	Dahlpac MC79 Lay-Flat Tube	125°C	114	24	96

ATL Econobleed

AIRTECH Airweave N4

AIRTECH FlowStrip Resin Feed Channel

AIRTECH Vacuum Breather Strip

frequently asked questions

How does ATL tailor composite systems for different industries?

Every industry has distinct performance, compliance, and manufacturing requirements. ATL’s in-house chemists and engineers develop and refine epoxy systems, adhesives, and core materials to meet the specific demands of marine, defence, aerospace, automotive, industrial, civil, architectural, and sporting applications — ensuring every product delivers optimal strength, efficiency, and durability.

Can ATL customise materials for my project or process?

Yes. ATL offers custom formulation and process engineering support to align material performance with your production requirements — whether infusion, hand lay-up, lamination, bonding, or CNC-routed panel construction. Our technical team collaborates closely with customers to deliver precision-matched resin systems and structural solutions for unique applications.

Are ATL’s composite systems certified for high-performance applications?

Absolutely. ATL operates under an ISO 9001:2015-certified quality management system, with selected materials approved by DNV for use in structural and high-load applications. Every ATL system is manufactured to exacting standards of performance, consistency, and traceability to meet the demands of defence, industrial, and advanced engineering environments.

What makes ATL’s materials suitable for large-scale or structural builds?

ATL’s epoxy systems, structural panels, and composite cores are engineered for high strength-to-weight performance, dimensional stability, and fatigue resistance. These attributes make ATL materials ideal for large composite assemblies, modular structures, and precision-engineered components where long-term strength, weight reduction, and reliability are essential.

Does ATL offer sustainable or bio-based composite options?

Yes. ATL is committed to advancing sustainable composite technology, offering USDA-Certified Bio-Based epoxy systems and environmentally conscious materials that reduce waste, extend service life, and minimise environmental impact. Our ongoing R&D focuses on improving sustainability without compromising structural integrity or mechanical performance.

How can I select the right ATL system for my application?

Choosing the ideal composite system depends on your structure’s design, load requirements, manufacturing process, and environmental exposure. ATL’s in-house engineers and chemists provide tailored advice to ensure the correct combination of resin, core, adhesive, and surface technology for your project.
To discuss your application or request technical guidance, contact ATL’s Technical Team — we’ll help you identify the most effective and efficient composite solution for your build.

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