High-fat content makes nuts particularly vulnerable to oxidation and rancidity. This technical analysis explores why brick shape vacuum packaging is the superior engineering response. We examine how a specialized nut vacuum packaging machine minimizes residual oxygen to protect unsaturated fatty acids. By utilizing high-barrier film packaging within an automatic vacuum sealing system, manufacturers can achieve shelf-life extensions of up to 100%. As a premier packaging machine manufacturer, we dissect the mechanical shaping process that provides structural rigidity.