This is the first attempt to combine disposed bottle caps and natural fibres into sandwich panels. A full factorial design is performed to identify the effects of the skin type (aluminium or coir fibre reinforced laminates) and bottle cap core packing (cubic and orthotropic) on the mechanical properties of the proposed panels. The coir fibre composite skin provides maximum core shear strength, 29 % higher than the aluminium-based panels, in cubic packing, while the flexural modulus is reduced by 45 %. An interlocking effect between the skin and the core is evidenced when coir fibre composites are used. In addition, the cubic cell packing increases the specific mechanical properties, even though with a higher density. The results highlight a promising association of green components and plastic bottle caps for secondary structural applications.

这是将已放置的瓶盖和天然纤维组合成夹心板的首次尝试。进行全因子设计来确定表皮类型（铝或椰壳纤维增强层压板）和瓶盖芯填充物（立方和正交各向异性）对所建议面板的机械性能的影响。椰壳纤维复合材料表皮在立方堆积中提供了最大的核心剪切强度，比铝基板材高29％，而弯曲模量降低了45％。当使用椰壳纤维复合材料时，可以证明皮肤和芯层之间具有互锁作用。此外，立方晶格堆积提高了特定的机械性能，即使密度更高。结果突出显示了用于二级结构应用的绿色组件和塑料瓶盖的有希望的关联。