Chapter 7 Thermosetting (Heat setting) Lecturer: Prof Dr Yan kelu
Chapter 7 Thermosetting (Heat Setting) Lecturer: Prof. Dr. Yan kelu
7.1 Introduction The dimensional stability, dyeability, and other properties of thermoplastic fibers are affected by repeated heating and cooling The main purposes of heat setting are as follows To stabilize the material to shrinkage distortion, and creasing To improve the dyeability of fabrics
7.1 Introduction • The dimensional stability, dyeability, and other properties of thermoplastic fibers are affected by repeated heating and cooling. The main purposes of heat setting are as follows: • To stabilize the material to shrinkage, distortion, and creasing, • To improve the dyeability of fabrics
定型三大内容: 棉的丝光 ·合纤热定型 树脂整理
定型三大内容： • 棉的丝光 • 合纤热定型 • 树脂整理
合成纤维在纺丝成型中热处理时间较短, 存在内应力;在织造过程中纤维、纱线 受力也存在内应力。因此,合纤织物遇 热易发生皱缩,织物幅面失去平整,印 花花纹改变,成衣尺寸失去稳定性 定型的目的 消除织物上已有的皱痕和提高织物的热 稳定性(主要指高温条件下的不收缩性) 和不易产生难以去除的折痕
• 合成纤维在纺丝成型中热处理时间较短， 存在内应力；在织造过程中纤维、纱线 受力也存在内应力。因此，合纤织物遇 热易发生皱缩，织物幅面失去平整，印 花花纹改变，成衣尺寸失去稳定性。 • 定型的目的： • 消除织物上已有的皱痕和提高织物的热 稳定性（主要指高温条件下的不收缩性） 和不易产生难以去除的折痕
fiber demanded y arn available modal ware stable
• fiber demanded • yarn available modality • ware stable