gail mold review

Debulking in PrePreg

The process of compacting each ply individually, in sequence.

Bridging

Occurs when fibers in the laminate span across a radius or curve in a part, typically at corners.

Tool Sealer

A coat made up of polymers bonded to the tool surface, filling micro-porous sites.

Release Agent

A low-energy substance that allows for multiple releases and can be applied in solvent or solvent-free formulas.

PSIG

Pressure greater than atmospheric pressure, referred to as gauge pressure.

Vacuum

Pressure below PSIG, measured in inches of mercury (Hg).

Release Film/Peel Ply

The first layer against the uncured laminate, acting as a barrier between laminate and other layers.

Bleeder

A porous layer that absorbs resin and helps control resin bleed and the movement of air and gas.

Separator or Blocker Film Layer

A layer used to restrict or prevent resin flow, placed between breather and bleeder layers.

Breather

A continuous layer allowing air and volatiles to escape while maintaining contact with resin layers.

Bagging Film

Used as the vacuum membrane in vacuum bagging operations.

Sealant Tape

A rubberized tape or putty used to seal bagging equipment and bagging film.

Vacuum Port

A fitting that connects the vacuum bag to the vacuum source.

Vacuum Hose

A hose used to draw air, which must provide adequate airflow.

Wet Layup

A process where resin is applied to a mold before placing wet-pregged plies.

Vacuum Infusion

A process where dry-reinforcements are placed in the mold and resin is injected under vacuum.

Prepreg Layup

A method that uses a vacuum bag and requires cure in a regulated environment, involving debulking.

Thermoforming

A process of shaping materials using heat and pressure.

Vacuum Forming

A thermoforming process that uses negative pressure to conform material to a mold.

Hydroforming

A process that uses pressurized fluid to conform material to a mold.

Matched Die Forming

A forming process using matched upper and lower metal molds under higher pressures.

Twin-Sheet Forming

A process that forms two preheated sheets between molds using a combination of vacuum and air pressure.

Drape Forming

A process where a preheated sheet is stretched over a male mold using gravity or vacuum.