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Keivlar Bullet Proof Vest

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A bullet proof vest consists of a vest-shaped panel made up of advanced plastic polymers that are composed of many layers of Kevlar or Spectra shield. The layers of Kevlar are sewn together using Kevlar thread but the nonwoven spectra shield is coated and bonded with resins such as Kraton and sealed between two sheets of Kevlar. Once all of the panels of Kevlar are sewn together it is placed inside of a fabric shell that is usually made from polyester and cotton blend or nylon. A bulletproof vest may also have nylon padding for extra protection. If the bullet proof vest is intended to be worn in especially dangerous situations puches are built in to hold plates of metal or ceramic bonded fiberglass.
To make the Kevlar the polymer poly-para-phenylene

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