Understanding the Difference Between Weft Knit Fabric and Warp Knit Fabric

When people hear knitted fabric, they usually think of T-shirts, leggings, sweaters, or sportswear. But in the textile world, knitted fabrics are mainly divided into two major categories:

1. Weft Knit Fabric2. Warp Knit Fabric

This guide explains the difference in very simple language so anyone can understand it.

What is Knitted Fabric?

Knitted fabric is made by creating loops of yarn connected together.

Think of it like:

• Hand knitting with needles
• Loops linked into loops

This loop structure gives fabric:

• Stretch
• Comfort
• Softness
• Flexibility

The Two Main Types of Knitted Fabric

Knitted Fabric

1. Weft Knit

2. Warp Knit

What is Weft Knit Fabric?

Weft knit fabric is made when one yarn (or a small number of yarns) moves horizontally across the width of the fabric, forming loops row by row.

Each row of loops is completed one after another.

In simple language, weft knitting is similar to hand knitting.

Technical Principle of Weft KnittingIn weft knitting:

• Yarn travels side to side
• Loops are formed across the width
• Rows are created one after another
• One yarn can form many loops
• This method creates a flexible and comfortable fabric.

 Main Characteristics of Weft Knit Fabric

1. High Comfort

Weft knitted fabrics are soft and comfortable because the loops can move freely.

2. Good Stretchability

These fabrics stretch well, especially in width direction.

3. Soft Hand Feel

The fabric usually feels smooth and gentle on the skin.

4. Good Breathability

Especially cotton-based weft knit fabrics allow air movement.

5. Suitable for Daily Wear

Ideal for garments worn for long hours.

6. May Curl at Edges

Some structures like single jersey may curl at the edges.

7. May Unravel More Easily

If damaged, loops can run more easily compared to warp knit.

 Common Types of Weft Knit Fabrics

Single Jersey

The most common knit fabric used in T-shirts.

Rib Fabric

Highly stretchable fabric used in cuffs and collars.

Interlock Fabric

Thicker and smoother than single jersey.

French Terry

Loops on one side, used in sweatshirts.

Fleece

Brushed warm fabric used in winter garments.

Piqué

Textured fabric used in polo shirts.

Waffle Knit

Square texture fabric.

Lycra Knit

Stretch fabric with elastane.

 Common Uses of Weft Knit Fabric

Weft knitted fabrics are commonly used in:

• T-shirts
• Polo shirts
• Sweatshirts
• Hoodies
• Joggers
• Loungewear
• Kidswear
• Fashion tops
• Casual dresses
• Yoga wear 

What is Warp Knit Fabric?

Warp knit fabric is made when many yarns run lengthwise simultaneously, and each yarn forms loops in the fabric direction.

Instead of one yarn moving side to side, multiple yarns work together at the same time.

This method creates a stronger and more stable fabric.

 Technical Principle of Warp Knitting

In warp knitting:

• Many yarns are used together
• Yarns move in length direction
• Loops are formed simultaneously
• Fabric is produced quickly on industrial machines
• Warp knitting requires specialized machinery.

 Main Characteristics of Warp Knit Fabric

1. Better Stability

Warp knit fabrics hold their shape better.

2. Stronger Construction

They are generally more secure in structure.

3. Less Curling

Edges usually remain flatter.

4. Less Laddering or Running

Fabric is less likely to unravel easily.

5. Suitable for Technical Uses

Used where durability and performance matter.

 Common Types of Warp Knit Fabrics

Tricot

Smooth fabric used in lingerie and lining.

Raschel

Used for lace, nets, and decorative fabrics.

Spacer Fabric

Three-dimensional fabric with cushioning effect.

Net Fabric

Used in technical and fashion products.