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Vacuum Assisted Injection Molding (VARTM)

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*4/17/2012

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“Vacuum assisted resin transfer molding (VARTM) is a composite manufacturing process for making composite parts. Using the VARTM process, dry fibers of a composite material may first be laid on a tool beneath a nylon vacuum bag, and the nylon vacuum bag may be sealed to the tool around the composite material using chromate vacuum bag tape. Then the air between the vacuum bag and the tool may be removed, compressing the vacuum bag against the composite material, while liquid resin is also simultaneously drawn through the composite material using a vacuum pump. Once the liquid resin is distributed throughout the composite material and the vacuum bag is compressed against the composite material by vacuum force, the vacuum pump may be removed, and the part may then be cured by heat to harden the composite part.”

[Ross and  Buxman, US Patent 8,128,396 (3/6/2012)]

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Copyright 2012 by Roger D. Corneliussen.
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* Date of latest addition; date of first entry is 4/17/2012.

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