Development of high performance dimple sheets using a broader range of postconsumer recycled resins

在住宅和商业建筑以及土木工程行业中，网纹床单因其控制地下水和保护基础墙不受潮的能力而受到越来越多的关注。在加拿大的一些省份，它们现在是现代建筑的强制性组成部分。这家工业合作伙伴正在使用共挤出技术制造一种独特的酒窝床单，其核心包含回收树脂，皮肤采用优质材料，以确保长期性能。历史上的做法一直是使用吹塑成型级再生树脂，主要是因为它们的可获得性很大，而且机械性能相对较好。然而，它们现在是最昂贵的再生树脂之一，大约是吹塑薄膜等其他等级的1.5到2倍，后者由于机械性能较低而更便宜。

Dimple sheets are gaining more and more interest in residential and commercial construction and in the civil engineering industry for their ability to control ground water and protect foundation walls against moisture. They are now a mandatory component of modern buildings in some Canadian provinces. The industrial partner is using coextrusion to manufacture a unique type of dimple sheets, which includes recycled resin in its core and high-quality material in the skins to ensure long term performance. Historical practice has been to use blow-molding grade recycled resins, mainly because of their availability in large quantity and relatively good mechanical properties. However, they are now among the priciest of recycled resins, about 1.5 to 2 times more expensive than other grades such as blown film, which are cheaper due to their lower mechanical properties.