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What is "Crabbing" - Definition & Explanation
Last Updated on: 12-Feb-2023 (1 year, 3 months, 16 days ago)
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Crabbing

Crabbing, also known as "skewing" or "skewing correction," is a process used in the textile industry to rectify or prevent distortion or biasing of fabric during manufacturing. It involves applying controlled tension to the fabric during finishing to achieve a balanced and square fabric structure. The term "crabbing" is derived from the sideways movement resembling the motion of a crab when tension is applied to the fabric.

Meaning and Definition

Crabbing is a critical step in textile processing that ensures the fabric's alignment and squareness by correcting any twisting or distortion caused during previous stages such as weaving, dyeing, or printing. The process involves passing the fabric through a crabbing machine, which applies lateral tension and steam to the fabric, causing it to skew or move sideways. This lateral movement helps realign the fabric threads and minimize any inherent bias.

Types of Crabbing

There are two main types of crabbing processes:

  1. Wet Crabbing: In wet crabbing, the fabric is moistened with water or a steam-dampening system before being passed through the crabbing machine. The moisture helps relax the fabric fibers, making it easier to manipulate and correct any distortions. Wet crabbing is commonly used for natural fibers like cotton or linen.
  2. Dry Crabbing: Dry crabbing involves passing the fabric through the crabbing machine without any additional moisture. Instead, the fabric is subjected to controlled tension and heat, often using steam or hot air. Dry crabbing is typically employed for synthetic fibers like polyester or nylon.

Tips in Handling Crabbing

Proper handling of the crabbing process is crucial to achieve desired results. Here are some tips:

  • Machine Settings: Adjust the tension, temperature, and speed of the crabbing machine based on the fabric type, width, and desired outcome. These settings should be carefully controlled to avoid overstretching or damaging the fabric.
  • Fabric Alignment: Ensure the fabric is properly aligned and guided through the crabbing machine to prevent wrinkles or skewing. Proper fabric alignment is crucial for achieving a square and balanced end product.
  • Quality Control: Regularly inspect the fabric during and after the crabbing process to identify and address any defects or distortions. This includes checking for even tension, absence of wrinkles, and correct alignment.
  • Monitoring Parameters: Keep track of process parameters such as tension, temperature, and speed to maintain consistency and repeatability in subsequent crabbing runs.

Top International Users and Manufacturers

Several renowned textile companies utilize crabbing processes to ensure high-quality fabrics. Here are some top international users and manufacturers:

  1. Louis Vuitton: Louis Vuitton, a luxury fashion brand, employs crabbing to maintain the structural integrity and precise alignment of their high-end textiles, including leather goods and apparel.
  2. Herms: Herms, known for its luxury scarves, silk, and home textiles, utilizes crabbing to achieve optimal fabric alignment and squareness, ensuring their products retain their desired shape and drape.
  3. Pendleton: Pendleton Woolen Mills, a renowned American textile company, implements crabbing techniques to ensure the quality and consistency of their wool fabrics, including their iconic wool blankets and apparel.
  4. Frette: Frette, an Italian luxury linen manufacturer, incorporates crabbing in their finishing processes to produce high-quality bed linens and home textiles known for their impeccable alignment and durability.
  5. Eileen Fisher: Eileen Fisher, a sustainable fashion brand, employs crabbing to maintain the shape and integrity of their eco-friendly textiles, ensuring their garments retain their intended design and fit.
  6. Loro Piana: Loro Piana, an Italian luxury brand, utilizes crabbing to achieve impeccable alignment and squareness in their premium cashmere and wool fabrics, guaranteeing exceptional quality and drape.

In conclusion, crabbing is a vital process in the textile industry that rectifies or prevents fabric distortion, ensuring balanced and square fabric structures. By employing wet or dry crabbing techniques, manufacturers can correct biases in the fabric, resulting in high-quality textiles. Proper handling of crabbing, including adjusting machine settings, ensuring fabric alignment, and implementing rigorous quality control, is essential for achieving optimal results. Internationally recognized brands such as Louis Vuitton, Herms, Pendleton, Frette, Eileen Fisher, and Loro Piana rely on crabbing to maintain the integrity and alignment of their textiles, showcasing its significance in the production of premium fabrics.


Crabbing
The process of passing wool fabrics through sequential hot and cold baths to set the fabric.
Crabbing
A treatment used to set the cloth and yarn twists permanently in woolens and worsted goods.

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