Knitting Basics and Applications

Introduction to Knitting

Knitting is one of the two fundamental methods of fabric construction (the other being weaving). It involves the interlooping of yarns to form flexible, stretchable fabrics. Knitting is widely used in apparel manufacturing due to the comfort and elasticity it provides.

Definition of Knitting

Knitting is a fabric manufacturing process in which yarn is formed into loops, and these loops are intermeshed to create fabric. The yarn follows a meandering path and forms loops in a sequence, giving the fabric its stretchable and soft characteristics.

Classification of Knitting

Knitting can be broadly classified into two types:

1. Weft Knitting:

   • The yarn runs horizontally.

   • Each course (row) of loops is made from a single yarn.

   • Common in circular knitting machines.

   • Examples: Plain knit, rib knit, interlock, purl knit.

2. Warp Knitting:

   • The yarn runs vertically.

   • Each loop in a course is made from a different yarn.

   • Common in tricot and raschel machines.

   • Examples: Tricot, raschel knit.

Differentiate Between Knitting and Weaving

Aspect	Knitting	Weaving
Structure	Interlooping of yarns	Interlacing of yarns
Yarn Direction	Horizontal (weft) or vertical (warp)	Warp and weft at right angles
Stretchability	Highly stretchable	Less stretchable
Comfort	Soft, elastic, breathable	Firm, less elastic
Common Use	T-shirts, socks, sweaters	Shirts, trousers, denim
Fabric Formation	Faster	Slower compared to knitting

Knitting Machinery

1. Circular Knitting Machine – For making tubular fabrics like t-shirts.

2. Flat Knitting Machine – Used in making panels like sweaters and collars.

3. Warp Knitting Machine – Used for high-speed production of tricot and raschel fabrics.

4. Hand Knitting Machine – Manual machines for small-scale or hobby use.

5. Computerized Knitting Machine – Automated machines for complex patterns (e.g., Jacquard).

Types of Knit Fabrics

1. Single Jersey – Lightweight, stretchy, and used for t-shirts.

2. Rib Knit – Alternating knit and purl stitches, used in cuffs and hems.

3. Interlock – Double-knit, soft and stable, used for outerwear.

4. Purl Knit – Appears the same on both sides, very elastic.

5. Tricot – Fine warp knit fabric used in lingerie and linings.

6. Raschel Knit – Coarse warp knit used in lace, nets, and blankets.

7. Fleece Knit – Brushed back knit, warm and soft.

8. Jacquard Knit – Patterned knit fabric created using computer-controlled machines.