Question

Classify fibres based on the life of the finish.

Hint:

Understanding the life of finishes helps in selecting the right fibre treatments for specific purposes—whether long-term durability or short-term functionality.

Answer 1

Step 1: Define the concept of "life of the finish."
The life of the finish refers to how long the finish or coating on the fibres remains effective before it starts to deteriorate. It can be classified based on the duration of the finish’s efficacy.
Step 2: Classify fibres based on life of finish.
Fibres can be classified into two categories based on the life of the finish: 1. Permanent finish: These finishes remain effective for the lifetime of the fibre, providing long-lasting protection or appearance. Examples include durable water-repellent finishes. 2. Temporary finish: These finishes are effective only for a limited period. They wear off after several washes or usage. Examples include sizing agents or starch finishes.
Step 3: Explanation of classifications.
- Permanent finishes are generally more expensive but are designed to last for the entire lifecycle of the textile. - Temporary finishes are commonly used for aesthetic purposes or to provide short-term characteristics to fabrics.