IBEX 365 News

Pull Air, Not Resin

Airtech’s Guide to a Successful Infusion

Airtech has offered Dahltexx SP-2 for many years. Dahltexx SP-2 is a semi-permeable membrane that allows air and vapors to pass and does not allow resin to pass. This is very useful in the resin infusion processes. Since early in 2021, Airtech has expanded its range of products based on Dahltexx SP-2. Each of these products, unique to the marine industry, are focused on saving material and labor, while improving flow time and quality for marine builders.

Airtech’s Dahltexx® SP-2 encased vacuum channels allow air and gas to be drawn out of the part, but prevent any resin from entering back into the channel. By not allowing any resin bleed back to the vacuum source, the annual resin savings alone can be substantial in comparison to conventional vacuum line methods. Labor savings are substantial.

With three options to choose from, Airtech provides a product option for all resin infusion vacuum applications:

  • Dahlvac MB80 is excellent for creating a perimeter vacuum manifold that cannot be flooded with resin. Easy to apply out of the box. Dahlvac MB80 has a “tail” for applications where there is standoff distance from the laminate.
  • Dahvac RC is functional the same as the MB80 product but in a tailless tubular form. This product very useful in applications where there is limited space on the mold for bagging.
  • Dahlpac MC79 is the solution for isolated areas where vacuum must be maintained.

Whether it be a large scale perimeter vacuum resin infusion (Hulls, Decks, Liners), small parts (hatches, consoles), or stringers and bulkheads, Airtech has the Dahltexx® SP-2 vacuum channel to meet the application. All Dahltexx® SP-2 vacuum channels are easily attached to any part and engineered for easy removal post green cure.

Investigate the full range of dedicated infusion materials from Airtech. As the manufacturer, Airtech maintains stock of materials for your applications, and has always had the best technical support in the industry. Contact an Airtech representative and put the Airtech Advantage to work in your shop today, www.airtech.com.




Airtech Advanced Materials Group is the largest manufacturer of vacuum bagging and composite tooling materials for prepreg/autoclave, resin infusion, and wet lay-up processes up to 799°F (426°C). Our product line consists of: vacuum bagging films, release films, pressure sensitive tapes, mold releases (non-liquid), peel plies, breathers & bleeders, sealant tapes, vacuum bag connectors & hoses, rubber, pressure pads, cutting tools, vacuum leak detectors, shrink tape, PTFE coated fiberglass, tooling prepregs and resins, and carbon and glass reinforcements.

With nearly 50 years of extrusion experience, we’ve taken the next step into additive manufacturing. Print-Tech® is our new large scale additive manufacturing or 3D printing tooling service for composites. Large-scale tooling in the form of trim fixtures, holding fixtures, and layup molds can be designed, tooled, and built faster without compromise quality. Also, we manufacture a full line of Dahltram® tooling and Dahlpram® purging resins.

Contact Us




Airtech Resin Infusion Brochure


Additional Images

Sign up for IBEX Updates

Get important reminders about what's in store for IBEX, and learn about trends, inspiring innovations, and industry education.


Anchor Exhibitors

Patrick Industries
Cartesius Industrial Solutions