Polyamide 6 (PA 6) with different relative viscosities (RV) have been prepared and their thermal, rheological as well as crystallization properties are highly dependent on their RV. Since PA 6 with RV of 3.16 exhibits the highest crystallization speed, it has been subsequently extrusion-molded to give lab-made PA 6 film. After biaxially stretched, lab-made biaxially-oriented PA 6 (BOPA6) films have eventually manufactured. Experimental results represent that lab-made BOPA6 film with biaxially stretching ratio of 300% performs superior physical properties to lab-made PA 6 film and commercial Unitika ON-15, proving that it is a highly potential polymeric film for electrical encapsulation and food packages.

已经制备了具有不同相对粘度（RV）的聚酰胺6（PA 6），它们的热，流变以及结晶性能高度依赖于它们的RV。由于RV为3.16的PA 6表现出最高的结晶速度，因此随后对其进行了挤出成型，以提供实验室制造的PA 6膜。在双轴拉伸之后，最终制造了实验室制造的双轴取向PA 6（BOPA6）薄膜。实验结果表明，实验室制造的BOPA6薄膜具有300％的双轴拉伸比，其物理性能优于实验室制造的PA 6薄膜和Unitika ON-15商业产品，证明它是用于电封装和食品包装的高潜力聚合物薄膜。