Differences Between Single Jersey and Double Jersey Knit Fabric

Differences Between Single Jersey and Double Jersey Knit Fabric

When it comes to knitting fabrics, two commonly used types are Single Jersey and Double Jersey. Understanding the differences between these fabrics can help you make informed decisions for your fashion and textile needs. In this blog, we will delve into the characteristics, benefits, and uses of Single Jersey and Double Jersey fabrics. Lets discuss briefly about the Differences Between Single Jersey and Double Jersey Knit Fabric.

Key Differences Between Single Jersey and Double Jersey Fabric

What is Single Jersey Fabric?

Single Jersey is a type of knitted fabric produced on a single needle bed. It is known for its simplicity and versatility. Here are some key points:

• Texture: Smooth on one side and slightly rough on the other.
• Weight: Lightweight and breathable.
• Stretch: Good stretch across the width, limited stretch along the length.
• Appearance: Curling tendency at the edges.
• Uses: T-shirts, casual wear, sportswear, undergarments.

Single Jersey production length and production in weight calculation formula

Single Jersey Production Length Calculation

To calculate the production length and production weight of Single Jersey fabric, you need to understand the fabric’s parameters and the calculation formulas involved.

Production Length Calculation

The production length of Single Jersey fabric can be calculated using the following formula:

Production Length= (Production Weight×1000)/ (GSM×Width) ​

Where:

• Production Weight is the weight of the fabric produced (usually in kilograms).
• GSM stands for grams per square meter, which is the fabric weight.
• Width is the fabric width (usually in centimeters).

Production Weight Calculation

The production weight of Single Jersey fabric can be calculated using the following formula:

Production Weight=(Production Length × GSM ×Width)/1000 ​

Where:

• Production Length is the length of the fabric produced (usually in meters).
• GSM is grams per square meter, which is the fabric weight.
• Width is the fabric width (usually in centimeters).

Example Calculations

1. Calculate Production Length: Suppose you have produced 500 kg of Single Jersey fabric with a GSM of 160 and a width of 150 cm.

Production Length=(500×1000)/(160×150)=500000/24000=20.83 meters

2. Calculate Production Weight: Suppose you have a Single Jersey fabric of 200 meters in length, with a GSM of 160 and a width of 150 cm.

Production Weight=(200×160×150)/1000=4800000/1000=4800 kg

What is Double Jersey Fabric?

Double Jersey, also known as Interlock, is made using two needle beds. This results in a fabric with a more complex structure. Key characteristics include:

• Texture: Smooth on both sides.
• Weight: Heavier and more durable than Single Jersey.
• Stretch: Balanced stretch in both directions.
• Appearance: No curling at the edges.
• Uses: Dresses, outerwear, sleepwear, high-end fashion garments.

Double Jersey production length and production in weight calculation formula

Double Jersey Production Length Calculation
To calculate the production length of double jersey fabric, you need the following parameters:
1.Course length (L): The length of yarn in one course (usually in centimeters or inches).
2.Number of courses per unit length (C): The number of courses in a given length of fabric (courses per inch or centimeter).
3.Number of feeders (F): The number of yarn feeders used in the knitting process.
4.Machine RPM (R): The rotational speed of the knitting machine (revolutions per minute).
5.Knitting time (T): The duration of knitting (in minutes).

The formula for production length (PL) in meters is:

PL=(L×C×F×R×T)/100

This formula considers the total length of yarn used and the number of courses to determine the length of fabric produced.

Double Jersey Production Weight Calculation

To calculate the production weight of double jersey fabric, you need the following parameters:
1.Fabric width (W): The width of the fabric (usually in meters).
2.Fabric length (L): The length of the fabric produced (in meters).
3.Fabric GSM (G): The grams per square meter (GSM) of the fabric, which is the weight per unit area.

The formula for production weight (PW) in kilograms is:

PW=(W×L×G)/1000

This formula calculates the total weight of the fabric by considering the fabric’s width, length, and density.

Production Length Example

Let’s assume:
Course length (L) = 0.5 cm
Number of courses per cm (C) = 20
Number of feeders (F) = 4
Machine RPM (R) = 500
Knitting time (T) = 60 minutes

Using the formula:

PL=(0.5×20×4×500×60)/100
PL=(0.5×20×4×500×60)/100=1200000/100=12000 meters

Production Weight Example

Let’s assume:
Fabric width (W) = 1.5 meters
Fabric length (L) = 12000 meters (from previous example)
Fabric GSM (G) = 200 grams per square meter

Using the formula:

PW=(1.5×12000×200)/1000
PW=3600000/1000=3600 kilograms

Comparison Between Single Jersey vs. Double Jersey

Here is a bar graph illustrating the differences between Single Jersey and Double Jersey knit fabrics across various characteristics. The characteristics compared are structure, texture, elasticity, thickness, durability, and applications, with a comparison scale indicating their relative performance:

• Single Jersey:
  • Structure: 1
  • Texture: 2
  • Elasticity: 3
  • Thickness: 1
  • Durability: 2
  • Applications: 3
• Double Jersey:
  • Structure: 2
  • Texture: 3
  • Elasticity: 2
  • Thickness: 3
  • Durability: 3
  • Applications: 2

Uses of Double Knit Fabric and Single Jersey Knit Fabric

Choosing the right fabric is crucial for achieving the desired outcome in any textile project. Double knit and single jersey knit fabrics are popular choices, each with unique properties making them suitable for various applications. Here, we explore the specific uses of these fabrics to help you make informed decisions.

Uses of Single Jersey Knit Fabric

Single jersey knit fabric is renowned for its simplicity and versatility. Here are some common applications:

1. T-Shirts:
   • Lightweight and breathable, making it perfect for casual wear.
   • Comfortable against the skin.
2. Undergarments:
   • Soft and stretchy, ideal for items like underwear and camisoles.
3. Casual Wear:
   • Used in making casual dresses, skirts, and tops due to its comfort and flexibility.
4. Sportswear:
   • Allows for good movement and breathability, suitable for athletic wear like jerseys and yoga tops.
5. Baby Clothing:
   • Gentle on sensitive skin, perfect for baby onesies and sleepers.
6. Loungewear:
   • Comfortable and easy to wear, ideal for pajamas and lounge pants.

Uses of Double Knit Fabric

Double knit fabric, with its thicker and more stable structure, is ideal for more structured garments. Here are some key uses:

1. Dresses:
   • Provides a polished look and maintains shape well, perfect for structured dresses and skirts.
2. Outerwear:
   • Suitable for jackets, blazers, and coats due to its durability and warmth.
3. Formal Wear:
   • Ideal for suits and formal trousers, offering a clean and sophisticated appearance.
4. Sleepwear:
   • Used for high-end pajamas and robes, providing extra warmth and comfort.
5. Athleisure:
   • Works well for leggings and fitted tops, offering stretch and recovery without losing shape.
6. High-End Fashion:
   • Often used in designer collections for creating tailored and fashionable garments.

Mathematical Analysis of Single Jersey and Double Jersey Fabrics

To fully appreciate the differences between single jersey and double jersey fabrics, it’s helpful to delve into a mathematical analysis. This involves examining their structure, density, and elasticity properties. Here, we’ll break down these aspects to understand the fundamental differences from a quantitative perspective.

Structure and Construction

Single Jersey Fabric

• Stitch Structure: Composed of a single set of needles.
• Knitting Technique: Uses a single row of needles, resulting in a fabric with a front (knit side) and a back (purl side).
• Loops: Each loop connects to its neighbor on either side in a single plane, creating a simple interlocking structure.
• Density: Generally has a lower stitch density compared to double jersey, as it involves only one layer of loops.

Double Jersey Fabric

• Stitch Structure: Composed of two sets of needles arranged in a double row.
• Knitting Technique: Utilizes both front and back needle beds, resulting in a fabric that is essentially two single jerseys knitted together.
• Loops: Loops are interconnected both horizontally and vertically, creating a more complex and stable structure.
• Density: Higher stitch density due to the interlocking of two layers, providing more stability and less tendency to curl.

Mathematical Representation

Single Jersey

• Stitch Length (SL): The length of yarn in each loop.
• Course Density (CD): Number of horizontal rows per unit length (measured in courses per inch or CPI).
• Wale Density (WD): Number of vertical columns per unit length (measured in wales per inch or WPI).
• Fabric Weight (FW): Can be calculated using the formula:

FW=2×SL×CD×WD×Yarn Count

Double Jersey

• Stitch Length (SL): The length of yarn in each loop, typically shorter than single jersey.
• Course Density (CD): Higher than single jersey due to the interlocking structure.
• Wale Density (WD): Higher than single jersey for the same reason.
• Fabric Weight (FW): Can be calculated using a similar formula, but accounting for the increased density:

FW=2×SL×CD×WD×Yarn Count.

Elasticity and Recovery

Single Jersey

• Elasticity: Exhibits higher elasticity in the horizontal direction due to the simpler loop structure.
• Recovery: Less robust recovery from stretching, prone to deformation.

Double Jersey

• Elasticity: Balanced elasticity in both horizontal and vertical directions due to the double layer structure.
• Recovery: Better recovery and shape retention after stretching, offering more resilience.

Comparative Analysis

Let’s compare some numerical values for a clearer understanding:

Benefits of Single Jersey Fabric

• Comfortable: Its lightweight nature makes it ideal for everyday wear.
• Breathable: Excellent for warm weather.
• Cost-effective: Generally cheaper than Double Jersey.
• Versatile: Suitable for various casual garments.

Benefits of Double Jersey Fabric

• Durability: Lasts longer due to its thickness and construction.
• Versatile Stretch: Provides a better fit for garments requiring more structure.
• Smooth Finish: Offers a polished look, suitable for high-end fashion.
• Warmth: Better for cooler climates due to its heavier weight.

Takeaway

Choosing between Single Jersey and Double Jersey fabric depends on the specific needs of your project. Single Jersey is perfect for lightweight, breathable garments, while Double Jersey offers durability and a smoother finish for more structured clothing.

By understanding the Differences Between Single Jersey and Double Jersey Knit Fabric, you can make the best choice for your fabric needs, ensuring both comfort and style in your finished products.