Epoxy Resin

Resin Infusion Process

Resin Infusion Process

Resin Infusion is a process by which vacuum draws resin into a dry fiber laminate in a one sided mold. A rigid or flexible film membrane is placed over the top and sealed around the mold periphery. Resin infusion is considered a “Closed Mold Process”.

The benefits of resin infusion when compared to non-vacuum bag curing of composite laminates include:

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Better fiber to Resin ratio
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Reduce operator exposure to harmful emissions
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Stronger laminate
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Reduce resin usage due to pre-compacted fabric
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Low void content
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Faster Ply lay-up

Vacuum Bagging Materials and Supplies

We supply Airtech vacuum bagging materials and vacuum bagging supplies. Plastic Materials, Incorporated is a one stop shop for vacuum bagging, vacuum bagging fiberglass, vacuum bagging composites. Our vacuum bagging supplies include items such as:

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Perforated Release Films
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Resin Distribution Mesh
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Vacuum Bagging Film
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Vacuum Sealant Tapes
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Vacuum Manifolds
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Resin Feeds
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Spray Adhesives
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Vacuum Reservoirs
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Through Bag Connectors
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Peel Plies

The first step in creating a successful vacuum bagging system is to select a quality vacuum pump and vacuum bag supplies. The pumps are typically rated by the horsepower of the motor, type of pumping mechanism. It is advisable to match the bag size, desired vacuum rate, and ultimate pressure with that of the pump for best results when working with vacuum bagging composites systems. While a smaller pump can often attain a desired vacuum level on a large system, it will take much longer to achieve that level. If a pump cannot achieve full vacuum in less than eight minutes, the pump is probably too small. Check out our vacuum bag supplies and vacuum bag fiberglass to determine what works best for your project. By squeezing as much air out of the bag as soon as possible before sealing the bag and applying the vacuum, the work of the pump can be greatly reduced.

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