What material is used to enhance airflow and prevent resin accumulation in the vacuum bagging?

In the context of vacuum bagging, breather material is used primarily to enhance airflow and prevent resin accumulation. This material acts as a spacer between the laminate and the vacuum bag, allowing for proper distribution of airflow both during the resin infusion process and throughout curing. The breather material has a porous structure that facilitates the movement of air and helps to ensure that the vacuum pressure is uniform across the surface of the part being manufactured.

Additionally, it provides a pathway for resin to flow away from the surface of the laminate, thereby preventing unwanted resin pooling or accumulation that could compromise the quality of the final product. Its ability to allow gases to escape while retaining the resin in the correct areas is vital for the integrity of the composite structure, leading to a more consistent and effective manufacturing process in aerospace applications.

Other materials listed, such as peel ply, serve different purposes such as creating a textured surface for bonding or allowing for easier release of parts after curing, while sealant tape is utilized to create airtight seals, and fiberglass cloth is primarily a reinforcement medium rather than a means to control airflow.