Question

Process sequence for polyester/wool blended knitted goods (Crisp handle). 
A. Light brushing. 
B. Open steam (allowing full relaxation). 
C. Decatising. 
D. Close cropping on face side of fabric. 

• A. A, B, C, D
• B. A, C, B, D
• C. B, A, D, C
• D. C, B, D, A"

Hint:

Finishing sequences generally follow a pattern: 1. Relax/Stabilize the fabric structure. 2. Prepare the surface (e.g., brushing). 3. Refine the surface (e.g., cropping/shearing). 4. Set the final properties (e.g., decatising, heat-setting).

Answer 1

The Correct Option is C

Step 1: Understand the goal. The sequence is for finishing a polyester/wool blend knit to achieve a "crisp handle," which implies a smooth, clean surface with good dimensional stability.

Step 2: Analyze the logical order of the processes.
- B. Open steam (allowing full relaxation): Knitted fabrics are often distorted after knitting. The first step is usually relaxation to remove internal stresses and achieve a stable state. Open steaming is a common way to do this.
- A. Light brushing: After relaxation, a light brushing can be done to raise any loose fibers slightly from the surface, preparing them for the next step.
- D. Close cropping on face side of fabric: Cropping (or shearing) is cutting the raised fibers to create a clean, smooth, and uniform surface. This must be done after brushing raises the fibers.
- C. Decatising: This is a final setting process that uses steam and pressure. It imparts dimensional stability, improves the handle (feel) of the fabric, and adds a subtle luster. It is typically one of the last steps to "lock in" the desired surface and dimensions.

Step 3: Assemble the sequence. The logical flow is Relaxation \(\rightarrow\) Brushing \(\rightarrow\) Cropping \(\rightarrow\) Final Setting. This corresponds to the sequence B, A, D, C.