Panel: Sweater knitting involves producing knitted fabric panels and shaping them into garment components such as:

• Front body
• Back body
• Sleeves
• Neckline
• Ribs, hems and cuffs

These parts may later be assembled (linking/sewing), but the knitting process itself focuses on creating each fabric piece with the correct tension, density, dimensions and pattern.

Gauge (often written as GG) refers to the number of needles per inch on a knitting machine or the number of wales (vertical loops) per inch produced by that needle bed.

Higher GG → more needles per inch → finer, tighter & lighter fabric

Lower GG → fewer needles per inch → coarser, thicker fabric

Rule of thumb: 3 GG = 3 needle per inch; 7 GG = 7 needles per inch; 12 GG = 12 needles per inch, 1.5GG= 3 Needles per 2 inches.

Light vs Heavy Gauge (as used in sweater industry)

Light Gauge: 9, 10, 12, 14, 16, 18 GG (finer hand, thinner fabric)

Heavy Gauge: 0.5, 1.5, 2.5, 3.5, 5, 7 GG (chunky hand, thicker fabric)

How Gauge Affects Fabric Characteristics

Attribute	Lower GG (e.g., 3–7)	Higher GG (e.g., 10–18)
Loop size	Large	Small
Fabric thickness	Thicker, loftier	Thinner, flatter
Openness	More open	More compact
Typical yarn	Bulkier yarn (e.g., Nm 1/1–1/2)	Finer yarn (e.g., Nm 2/48, 2/60)
Typical handfeel	Chunky, textured	Clean, refined
Fashion use	Cables, fisherman rib, heavy textures	Jersey, tuck textures, fine ribs
GSM tendency*	Higher at low GG with bulky yarn	Moderate/lower with fine yarn

* GSM also depends on stitch length, yarn count, structure (jersey, rib), finishing and relaxation.

Multi Gauge, Convertible Gauge and Hook Gauge

 Multi Gauge

Knitting different gauge effects within one garment part on the same machine, via needle selection, plating, tuck/transfer tricks and stitch length modulation.

• Outcome: Textural panels (e.g., chunky cables + fine jersey) without changing machines; decorative variety, complex patterns.

Convertible Gauge

A machine platform designed to operate across a range of gauges—you can practically reconfigure to knit different GG on the same base machine (e.g., by changing needle beds, beds/needles pitch groups or other manufacturer‑specific kits).

• Outcome: Not simultaneously in the same course; rather one gauge at a time per setup. Great for flexibility in factory capacity across seasons.

Hook Gauge (for latch needles)

Gauge of the hook of a latch needle—essentially the actual functional machine gauge of a convertible setup.

• Why it matters: Ensures the yarn size and stitch formation fit the needle hook geometry; influences yarn count window and defect risk (missed latches, dropped stitches).

Match yarn count to hook gauge to ensure good loop formation.

(Always validate with supplier charts and on‑machine trials.)

How Sweater Knitting Is Done

Modern sweater manufacturing is built on the interaction between needles, cams, carriages and yarn feeders. Understanding this mechanism is essential for machine technicians, industrial engineers, merchandisers and designers.

This section expands on your visuals and explains the knitting fundamentals clearly.

Understanding the Basic Loop Formation Process in Knitting

Knitting is one of the oldest and most versatile forms of textile construction. Knitting is the process of creating fabric by interlocking loops of yarn. Needles are used to create the loops. All knit fabrics from the simplest jersey to the most complex jacquard are made either by hand or by sophisticated computerised flat knitting machines. But the basic principle for all is the same: the formation of loops.This section describes the mechanism of loop formation in a simple, visual and technically correct manner.

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Loop in Knitting

A loop or stitch is formed when the needle pulls new yarn through a loop already in place.

Each loop then hooks through the previous one, creating a continuous chain.

The fabric is built up by stacking rows of loops vertically (wales) and connecting them horizontally (courses).

How a Needle Forms a Loop

Knitting Actions of a Latch Needle (Step‑by‑Step Explained)

Step by step explanation of knitting actions of a latch needle .

The latch needle is the most common type of needle used in flat, circular, and computerised knitting machines.

The unique feature is the latch, a small hinged flap that opens and closes automatically while you knit to help form loops.

The latch needle performs 4 main actions of knitting.

1. Clearing
2. Feeding
3. Knocking‑over
4. Drawing‑down (loop forming)

The image you provided shows these steps visually.

Below is a detailed explanation of the entire cycle.

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 Clearing (Raising the Needle)

The needle is lifted upward by the CAM.

Key Actions

• The existing (old) loop slides down from the hook and rests on the needle stem.
• The latch automatically opens as the old loop pushes against it.
• The hook becomes completely empty and ready to receive new yarn.

Purpose:
To clear the hook so a new loop can be formed.

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Yarn Feeding (Receiving the New Yarn)

As the needle reaches its highest point:

Key Actions

• The yarn feeder lays a new yarn strand into the empty hook.
• The latch remains open, allowing the yarn to position correctly.

Purpose:
To introduce fresh yarn that will become the next loop.

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3. Latch Closing (Old Loop Closes the Latch)

As the needle begins descending:

Key Actions

• The old loop moves upward toward the hook.
• It pushes the latch closed.
• The latch drops over the new yarn, trapping it inside the hook.

Purpose:
To secure the new yarn inside the hook before knitting begins.

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4. Knocking‑Over (Forming the New Loop)

The needle continues moving downward.

Key Actions

• The old loop slides over the closed latch and over the new yarn.
• The old loop is knocked off the needle, becoming part of the fabric.
• The new loop is pulled through the old loop.

Purpose:
To create a new stitch and integrate it into the fabric structure.

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5. Drawing‑Down (Loop Tightening)

As the new loop is pulled below the latch:

Key Actions

• The latch opens again as the new loop passes through the hook.
• The new loop becomes the old loop for the next knitting cycle.
• Take‑down tension pulls the fabric downward to maintain loop size.

Purpose:
To finalize the newly formed loop and prepare for the next cycle.

The needle continues downward, pulling the new loop through the old one.
The old loop slips off the needle, forming part of the fabric.

This cycle repeats continuously as the carriage moves across the needle bed.

Latch Needle Actions

Step	Name	What Happens
1	Clearing	Hook emptied; latch opened; old loop moves to stem
2	Feeding	New yarn placed in the hook
3	Latch Closing	Old loop closes latch over the new yarn
4	Knocking‑Over	Old loop is cast off; new loop is drawn through
5	Drawing‑Down	New loop becomes old loop; fabric pulled down

CAMs (Needle Path / Needle Groove)-System

A CAM is the metal path or groove inside the knitting carriage that control what the needle does.

Inside the knitting carriage (or CAM box), the CAM controls:

• How the needle moves
• Which direction it travels
• What kind of stitch gets formed (knit, tuck, miss)

So yeah… small part, big responsibility.

• How CAMs Work

As the carriage moves left and right:

• ✓ Needles slide into CAM grooves
• ✓ CAM shape forces the needle up/down
• ✓ This movement forms the stitch

Why CAM Count Determines “System”

Needle path/groove in which needle goes through is called CAM. If machine has one CAM, then it is called 1 System machine.”

Quick Breakdown

1 System (1 CAM)
→ About ½ course per carriage movement (left to right)
→ Slower, but simpler

2 System (2 CAMS)
→ 1 full course per movement
→ Balanced speed and control

3 System (3 CAMS)
→ Around 1.5 courses per movement
→ Faster output

More systems
→ More knitting actions per pass
→ Higher productivity

And in some machines—especially double carriage setups—you can have multiple systems working together. Things can scale up pretty quickly.

Types of Sweater Knitting Machines

The modern Sweater manufacturing sector utilizes a varied selection of knitting machines, each tailored to specific gauge needs, fabric designs, and production flexibility and efficiency results. Planners, technicians and industrial engineers responsible for costing, capacity planning and quality assurance must understand the type, system configuration, gauge capability and brand specialization.

This guide covers:

• Core machine categories
• Machine systems (1‑bed, 2‑bed, 4‑bed)
• Stoll machine catalog
• Shima Seiki machine catalog
• Chinese machine category overview
• Practical implications for production, IE and costing

Main Types of Sweater Knitting Machines

Manual Knitting Machines (Fixed Gauge)

These are traditional hand-operated flatbed knitting machines, used mainly for sampling, prototyping, repair and small-scale production.

Key Characteristics

• Fixed gauge (GG cannot be changed)
• Operator-dependent productivity
• Ideal for high-texture stitches (e.g., hand cables, special loops)
• Very economical for samples or artisanal items

Best Use: Small orders, heavy textures, embroidery-like knitting, customized sweaters.

Semi-Automatic Flat Knitting Machines (Fixed Gauge)

Semi-auto machines combine hand operation with mechanical carriage movement.

Key Characteristics

• Fixed gauge
• Manual yarn feeding with guided machine support
• Moderate speed
• Suitable for basic sweater panels, ribs, cables and regular structures.

Best Use: Low-cost sweater production, emerging factories, training centers.

Fully Automated Jacquard Knitting Machines (Fixed, Multi & Convertible Gauge)

Jacquard machines are sophisticated computer-controlled flat knitting machines, able to create complex patterns, intarsia, plating, variable gauge designs and fine-quality knitwear.

Available Types

• 1 System (Chinese) – Basic full-automatic, low-cost entry model
• 2 System (China, Germany, Japan) – Most commonly used in mass production
• 3 System (Germany, Japan) – Higher efficiency, ideal for fine structures
• 4 System – Double Carriage (Germany, Japan) – Two carriages work together for high output
• 2 System – Double Carriage (Germany, Japan) – Flexible and balanced for large orders
• 4 Bed – Seamless Whole Garment Machines (Japan) – Advanced 3D knitting without seams

Why “Systems” Matter?

A “system” represents a knitting head that can work independently.

• 1 System = 1 CAM (1/2 course knitting per movement (Left to right)
• 2 System = 2 CAMS (1 course knitting per movement (Left to right)
• 3 System = 3 CAMS (1.5 course knitting per movement (Left to right)
• More systems = more carriage activity per course = higher production efficiency.
• 4-system machines can double production on selective patterns.

Stoll Machine Categories (Germany)

Stoll is known for precision engineering, reliability and advanced knitting technology.

Key Machine Features

• Fixed, multi-gauge & convertible platforms
• Wide gauge range (3.5 GG to 21 GG depending on model)
• Renowned for intarsia, plating, 3D knit construction
• Advanced programming via M1 design system

Popular Stoll Convertible & Multi-Gauge Series

Stoll Key Models and Features

• Model 502 (2 System – 48"/52")
  Jacquard; intarsia feeder optional

• Model 530 (3 System – 48"/52")
  Jacquard with plating options

• Model 330 (3 System –36")
  Jacquard with plating options

• Model 730 (3 System – 72")

  Suitable for intarsia + plating structures

• Model 822 (4 System – 84")

  Jacquard; 2‑carriage; capable of knitting two parts simultaneously

• Model 830 (2 or 3 system – 84")
  High-output plating and jacquard operations

Stoll machines are widely used for fine to mid-gauge commercial knitwear, engineered fashion structures and high-quality export production.

Shima Seiki Machine Category (Japan)

Shima Seiki is a global leader in advanced flat knitting technology. They pioneered WHOLEGARMENT seamless knitting and are known for consistency, precision and reliability.

Key Machine Features

• Fixed, multi-gauge & convertible platforms
• Wide gauge range (3.5 GG to 21 GG depending on model)
• Renowned for intarsia, plating, 3D knit and WHOLEGARMENT construction
• Advanced programming via SDS-ONE APEX design system

Popular Shima Seiki Models 

Standard Flatbed Models

• MACH2SIR‑123 – 2 system, 12/14/16GG
• SSR‑112 – 2 system, 7/12/14/16GG
• SIR‑123 – 2 system, 3.5GG, 5GG, 7GG

High-Capacity / Multi-System Models

• N.SVR‑123SP – 2 system, plating-focused
• SVR‑122SP – 2 system, 5–7–12–14–16GG
• SCG‑122SN – 3 system, 3/4/5GG

Double Carriage Models

• SFF‑1527 – 2 system, 2-carriage, 7–18GG
• Enables two panels to be knitted at once → higher throughput

WholeGarment (4-Bed) Models

• MACH2XS‑183 – 4 system, WholeGarment, 8–10–12–14–16GG
• MACH2XS‑125 – WholeGarment 5–8–15–18GG
• SWG-FIRST – Compact WholeGarment machine, 18–21GG

Key Advantage:
Shima machines are unmatched for seamless sweaters, eliminating linking operations and reducing production time drastically.

Chinese Machine Category

Chinese flat knitting machines offer cost-effective production solutions. Although traditionally built with fixed gauge, newer models include convertible configurations.

• 1 System – Fixed Gauge
  Roller/comb feeding system

• 2 System – Fixed Gauge
  Suitable for mid-level production

• 2 System – Convertible Gauge
  Increasingly used for versatile, budget-friendly knitting

• 

Typical Advantages

• ✓ Very economical
• ✓ Easy maintenance
• ✓ Ideal for bulk orders, basic styles and price-sensitive markets

Machine Type Comparison

This expanded guide provides a complete overview of the major categories of sweater knitting machines and their technical capabilities:

• ✓ Manual & Semi-auto for basic operations
• ✓ Jacquard Flat Machines for commercial mass production
• ✓ Stoll & Shima Seiki as global leaders in advanced, multi-gauge and WholeGarment knitting
• ✓ Chinese machines as cost-effective solutions for basic bulk production

Each machine type plays a unique role in productivity, cost and fashion capability—making it essential to match machine type, gauge, yarn count and design for optimal manufacturing outcomes.

Cast‑on is the foundation row that anchors the panel.

• Accurate panel width
• Smooth edges
• No curling or distortion
• Strong anchoring for subsequent rows

Common Cast-On Methods

Tight cast-on→ Ribs, cuffs, waistbands

Loose cast-on→ Soft, drapey fabrics

Tubular cast-on→ Premium rib finish

Waste yarn cast-on→ Useful when panels need linking or trimming later