A commercial recycled paperboard was double coated with poly (butylene adipate-co-terephthalate) (PBAT) films by using hot pressing aiming the production of a laminated material compatible with food packaging. The proposed new approach allowed to smooth the paperboard surface and to obtain a material with low oxygen permeability, low wettability, and excellent resistance to grease (kit value of 12). The observations by scanning electron microscopy (SEM) showed a homogeneous surface with a high degree of coverage, suggesting good compatibility of the PBAT with the cellulose fibers. Some of the mechanical properties of the PBAT-coated paperboard were also greatly improved, such as ply-bonding, bending resistance and bursting strength, which are important for packaging applications. Remarkably, it was possible to firmly bond two pieces of paperboard coated with PBAT by simply hot-pressing at an appropriate temperature. This method created a reinforced coated paperboard that showed high potential to be used in the production of laminated food packaging with different structures without the need of adhesives.

中文翻译：

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采用再生纸板和 PBAT 薄膜的新型且易于实施的绿色包装选项


通过热压在商业回收纸板上涂上聚（己二酸-对苯二甲酸丁二醇酯）（PBAT）薄膜，旨在生产与食品包装兼容的层压材料。所提出的新方法可以使纸板表面变得光滑，并获得具有低透氧性、低润湿性和优异的耐油脂性（套件值为12）的材料。扫描电子显微镜 (SEM) 观察结果显示，PBAT 具有高覆盖度的均匀表面，表明 PBAT 与纤维素纤维具有良好的相容性。 PBAT 涂层纸板的一些机械性能也得到了极大的改善，例如层粘合性、抗弯曲性和耐破强度，这些对于包装应用非常重要。值得注意的是，只需在适当的温度下进行热压，就可以将两块涂有 PBAT 的纸板牢固地粘合在一起。这种方法创造了一种增强涂层纸板，显示出在无需粘合剂的情况下用于生产不同结构的层压食品包装的巨大潜力。