Designation
Where to buy| Item | Value |
|---|---|
| Designation | Vacuum bagging consumables |
| Class | Composites |
| Type | bagging consumables |
Vacuum bagging consumables: typical values
| Item | Typical value | Source |
|---|---|---|
| Breather, polyester, FAA guidance | 4 oz below 50 psi; 10 oz for 50–100 psi | FAA-H-8083-31, p. 7-21 |
| Airweave N-4 breather/bleeder (polyester) | 4 oz/yd² (135 g/m²); max recommended 400 °F (204 °C) | Airtech Airweave data sheet, p. 3 |
| Airweave N-7 | 7 oz/yd² (237 g/m²); 400 °F (204 °C) | Airtech Airweave data sheet, p. 3 |
| Airweave N-10 | 10 oz/yd² (339 g/m²); 400 °F (204 °C) | Airtech Airweave data sheet, p. 3 |
| Airweave Super 18 | 18 oz/yd² (610 g/m²); 400 °F (204 °C) | Airtech Airweave data sheet, p. 3 |
| Airweave A (rayon, waffle bleeder for wet layup) | 1.6 oz/yd² (54.3 g/m²); 400 °F (204 °C) | Airtech Airweave data sheet, p. 3 |
| Peel ply / release fabric: Release Ease 234 TFP (PTFE-coated glass) | 0.0024 in (0.060 mm) thick; max 288 °C (550 °F); weight not stated on the sheet | Airtech Release Ease 234 TFP data sheet |
| Bagging film: Wrightlon 7400 (nylon) | 0.002 in (50 µm) or 0.003 in (75 µm); 400 % elongation, 55 MPa tensile; max 204 °C; avoid phenolic resins | Airtech Wrightlon 7400 data sheet |
| Sealant tape: AT-200Y (synthetic rubber, yellow) | 1/8 × 1/2 in (3 × 12 mm); max 400 °F (204 °C) | Airtech AT-200Y data sheet |
The FAA handbook gives breather weights and pressures only; it gives no weights for bleeder, peel ply, film or tape. Airweave and tape numbers are Airtech's nominal values for that product; other makes differ.
Notes from the guide
- Not a bagging schedule. The stack, plies and cure come from the SRM or the repair data. These tables only identify typical products.
- Not a core substitution table. Core type, cell size, density and thickness are engineering data; a different density is a different part.
- Temperature ratings are maximums, not working points. They depend on time at temperature; test before use.
Where to buy
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Distributors coming soon.
Sources
- Hexcel HexWeb HRH-10 Product Data Sheet (inch) — designation, density tolerance, mechanical properties table.
- Airtech Airweave Non-Woven Polyester Breathers/Bleeders data sheet, p. 3 — nominal weights and maximum recommended use temperatures.
- Airtech Wrightlon 7400 Nylon Vacuum Bagging Film data sheet — thickness, elongation, tensile strength, maximum use temperature.
- Airtech AT-200Y data sheet — base material, size, maximum use temperature.
- Airtech Release Ease 234 TFP data sheet — PTFE-coated fiberglass release fabric, thickness and temperature rating.
- FAA-H-8083-31, AMT Handbook — Airframe, Volume 1, Chapter 7, pp. 7-11, 7-12, 7-21, 7-22 — core materials and vacuum bagging process description.
Educational reference only. not approved data. Always consult the applicable SRM, AMM, or AC 43.13-1B and your certifying authority.