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What is Interlock Fleece Fabric?

Interlock fleece fabric is a double-knit fabric brushed on the face, back, or both sides. Generally, interlock fabric has a technical face (V-shape) on both sides, which means the same appearance in front and back. However, interlock fleece is brushed to enhance its smoothness, soft surface, and insulating properties.


Interlock fabric is crafted using a unique interlocking weave pattern, which gives it a dense yet flexible structure. It’s thicker and sturdier than single jersey fabrics.

Characteristics


Details

Also Known As


Double-knit fleece, Brushed fleece

Manufacturing Process

Interlock knitting, brushing


Appearance

Smooth outer surface, brushed soft inner fleece

GSM Range

200–350 GSM

Composition Range

100% Polyester, Polyester-Cotton blends (70:30, 60:40)

Construction Range

Dense double-knit interlock structure

Functionality

TPU, PU, AC, W/R, PV, PVC

Thread Density Range

190T–320T

Count Variations

30D, 50D, 75D, 150D

Full Width

57/58”, 59/60”, 71/73”

Fabric Breathability

Moderate

Moisture-Wicking Abilities

Moderate to High (depends on finish)

Heat Retention Abilities

High (excellent for cold climates)

Stretchability

Moderate to High (10–20%)

Prone to Pilling/Bubbling

Low (resists pilling better than single-knit fleece)

Country of First Production

United States (Late 20th Century)

Biggest Exporter Country

China (Exports over 2 billion meters annually)

Recommended Washing Temperatures

Cold to warm water (30°C–40°C)

Applications

Activewear, casual clothing, sportswear, linings for jackets and gloves, industrial uses

 

How is Interlock Fleece Fabric Made?

Interlock fleece fabric uses tightly knit polyester or a polyester-cotton blend. Here's manufacturing process:

  1. Knitting Process: The interlock method knits two layers of fabric simultaneously, creating a double-faced material.
  2. Brushing: The fleece side undergoes brushing, making it soft and fluffy.
  3. Dyeing: Fabrics are dyed in various colors, depending on the final use.

Key Features of Interlock Fleece Fabric

1. Excellent Stretchability

Thanks to its interlocking weave, this fabric stretches both horizontally and vertically. It offers a snug fit. It has a 10–20% elasticity. Which is ideal for sportswear.

2. Superior Warmth Retention

Interlock fleece traps air between its layers. This property enhances insulation, and retain body heat during colder months.

3. High Durability

It withstands regular wear and tear. Its double-knit structure resists pilling and fraying better than other fleece types.

 

Applications of Interlock Fleece Fabric

The applications of interlock fleece fabric are versatile:

  • Activewear: Tracksuits, leggings, and gym clothes benefit from its stretch and durability.
  • Casual Clothing: Hoodies, sweatshirts, and pajamas feel cozy and warm.
  • Industrial Uses: Used in linings for jackets, gloves, and workwear for added warmth.

Benefits of Using Interlock Fleece Fabric

1. Comfort and Softness

The brushed fleece side feels plush, making it skin-friendly. You’ll enjoy wearing it all day long.

2. Versatility

It suits everything from athleisure to outdoor apparel. Its structure adapts to various sewing needs.

3. Cost-Efficiency

Interlock fleece fabric offers quality at an affordable price. It is budget-friendly compared to pure wool alternatives.

Conclusion

Interlock fleece fabric is the ultimate blend of comfort, warmth, and durability. Whether for sportswear or casual outfits, this fabric never disappoints. If you’re looking to combine affordability with functionality, interlock fleece should be your go-to choice.

 

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