Thermoplastic Skin-to-Honeycomb Bonding for Acoustic Panel Strength

The patent utilizes the phase transition of thermoplastic material from solid to molten state through controlled heating, then to solid state upon cooling. The thermoplastic skin is heated to melt the material, allowing it to flow and penetrate the cellular core structure, then cooled to solidify and form a strong mechanical interlock. This phase transition process creates superior bonding strength and acoustic performance compared to conventional bonding methods.

The patent creates a composite structure consisting of thermoplastic skin, cellular core, and thermoplastic bonding material that work together as an integrated system. The combination of these materials provides both structural integrity and acoustic attenuation properties, with the thermoplastic material serving as both structural component and bonding agent.

The patent replaces conventional mechanical bonding systems (such as adhesives, fasteners, or mechanical fastening systems) with a thermal processing system. By using controlled heating to melt and subsequently cool to solidify the thermoplastic material, the process achieves both高效率 (high efficiency) and high precision bonding in a single integrated operation, eliminating the need for separate bonding steps.

The patent controls the bonding process by changing key parameters including temperature (heating to melt, cooling to solidify), pressure (applying pressure during bonding), and time (controlling heating and cooling durations). These parameter changes enable precise control over the bonding process, achieving both high efficiency and high effectiveness simultaneously.