Capabilities: Processes that Shape the Fabric
Fabric performance is shaped by the processes it receives – dyeing, printing, and finishing technologies that determine its color fastness, hand-feel, and functional power. These treatments are the engineering behind every great textile.
At GAC, we employ world-class techniques and state-of-the-art local processing, applying each finish intelligently to maximize a fabric’s durability, appearance, and performance.
Dyeing
Dyeing is the process that permanently bonds color molecules to the textile fibers, giving a fabric its final shade and appearance. Achieving excellent color fastness – the ability to resist fading from light, washing, and friction – is paramount, especially for performance apparel. We utilize a wide range of modern dyeing techniques to achieve various results, including piece dyeing (coloring completed fabric), yarn dyeing (coloring thread before weaving), and advanced methods like solution dyeing (integrating color before the fiber is spun). This flexibility ensures we can accommodate any project requirement.
Piece dyeing
Piece Dyeing is the most common and flexible dyeing method, where an entire roll of woven or knitted fabric is colored after construction. This approach allows for late-stage color decisions and quick production runs, making it highly efficient. The process involves immersing the fabric into large vats of dye to ensure a uniform color across the entire bolt. Lab dipping is an instrumental part of the process, assuring that a small, precise sample is created and approved to achieve the exact shade required for color matching before the full-scale production dyeing begins.
Mélange dyeing (Heather Effect)
Melange Dyeing is a technique used to create the popular heathered or speckled aesthetic, where the fabric appears to be made of mixed light and dark fibers. This effect is achieved by blending different types of fibers (e.g., polyester and nylon) or fibers with different dye affinities. When dyed, only one fiber type takes the color, creating a unique, tonal, and dimensional appearance.
Yarn Dyeing
Yarn Dyeing is the process where individual yarns or threads are colored before they are woven or knitted into a fabric. This method is essential for creating patterns, such as stripes, plaids, and intricate jacquards, where the color needs to be structurally integrated. Yarn dyeing results in deep, vibrant colors and superior color fastness, especially at the pattern transitions.
Dope Dyeing
Dope Dyeing, also known as Solution Dyeing, is the most sustainable and color-fast method. The color pigment is added directly to the polymer solution before the synthetic fiber is extruded (spun). Because the color is locked inside the fiber, it provides unparalleled UV and wash fastness and drastically reduces water and energy consumption, as well as wastewater from the dyeing process.
Learn more about Dope Dyed yarn.
Out of all stages in fabric production, dyeing carries the highest environmental impact. It requires large amounts of water and energy, and even small issues in wastewater treatment can cause serious environmental problems. Dope dyeing offers a better solution: by adding color directly during fiber extrusion, it reduces water and energy usage, lowers CO₂ emissions, improves colorfastness, and shortens lead times by removing the need for lab dips.
Treatments
Treatments are chemical processes applied to the fabric to embed or enhance specific high-performance functions. These processes are essential for technical apparel. Key treatments include Durable Water Repellency (DWR) to shed rain, antimicrobial agents for permanent odor control, and wicking or quick-dry finishes to enhance moisture management. These engineered treatments deliver the specialized comfort and protection required for demanding environments.
Durable Water Reppelent
Durable Water Repellency (DWR) is a chemical treatment applied to the outer surface of a fabric to make it hydrophobic – causing water to bead up and roll off rather than soaking in. This crucial treatment prevents the face fabric from becoming saturated, which maintains the garment’s breathability and thermal performance. We exclusively use C0, PFC-free DWR treatments, which are the most environmentally responsible option available.
Antibacterial Treatments
Antibacterial treatments are applied to the fabric to inhibit the growth of odor-causing bacteria and fungi, providing durable odor control throughout the garment’s lifespan. By neutralizing the microbes that break down sweat, these treatments keep the textile fresher for longer and reduce the need for frequent washing. We utilize industry-leading technologies such as Polygiene and Sanitized to deliver reliable, high-performance freshness.
Wicking Treatments
Wicking treatments are engineered to enhance the natural ability of a fabric to manage moisture. This treatment creates a pathway for liquid sweat to be drawn rapidly away from the skin and transferred to the fabric’s surface. Wicking is essential for maintaining comfort during intense activity, as it prevents the textile from clinging to the body and becoming saturated.
Quick Dry Treatments
Quick Dry Treatments are closely linked with wicking, focusing on accelerating the rate at which moisture evaporates from the surface of the fabric. Once the sweat has been wicked away from the skin, this treatment ensures the moisture is released quickly into the air. This dual function – effective wicking combined with fast drying – is key to thermal regulation and keeping the wearer dry and comfortable.
Polygiene® Odor Control
Polygiene is a world-leading brand of durable odor control technology that treats textiles to stop the growth of odor-causing bacteria and fungi. It uses naturally sourced silver chloride, which is highly effective and integrated into the fabric during the finishing stage. This treatment allows garments to remain fresh through extended wear, reducing the need for frequent washing and extending the product’s lifespan.
Finishing Processes
Finishes are mechanical or thermal processes applied near the end of manufacturing to manipulate the texture and hand-feel of the fabric. Common finishes include calendering for a smooth or glossy surface, peaching or brushing to create a soft, insulating fleece texture, and heat setting to establish shape retention and prevent shrinkage. Finishes are critical for achieving the textile’s final aesthetics and tactile quality.
Printing
Printing is a finishing process used to apply patterns, graphics, or logos to a fabric’s surface. We utilize a full range of methods, including sublimation for vibrant synthetic prints, digital printing for complex, low-volume designs, and traditional roller printing. Each technique, such as water disperse or reflective prints, is carefully selected to ensure color permanence and suitability for the specific material and intended end-use.
Peaching & Brushing (Napping)
Peaching and Brushing are mechanical processes used to alter the surface texture and hand-feel of the fabric. Brushing lifts the fiber ends to create a soft, downy texture, often resulting in a fleece or napped surface that traps air for better insulation. Peaching creates a soft, sueded feel, and both finishes are employed to enhance comfort, warmth, and the overall tactile quality of the textile.
Coating
Coating involves applying a liquid polymer compound directly to the fabric surface, which then solidifies into a thin, continuous layer. This process is frequently used to apply waterproof, windproof, or breathable barriers directly onto a base layer, often as an alternative to bonding a separate membrane in the middle. Coatings are a cost-effective way to achieve specific performance barriers and add structure to the textile.
Heat Setting
Heat Setting is a thermal process essential for synthetic materials like polyester and nylon. The fabric is exposed to precise temperatures for a set time, which stabilizes the fiber’s molecular structure. This process is critical for preventing shrinkage and ensuring excellent dimensional stability and wrinkle resistance throughout the garment’s life, making it a foundation for quality performance apparel.
Calendering
Calendering is a mechanical finishing process where the fabric is passed through a series of highly polished, heated rollers. This process flattens the surface of the textile, resulting in a smooth hand-feel, increased luster, and a reduction in bulk, making the fabric thinner and denser. Calendering is used to achieve a sleek, defined appearance, particularly on tight-woven or technical fabrics where a smooth surface is desired.
Fabric Printing
The available printing techniques – from high-resolution digital applications to specialized reflective and water disperse options – are plentiful, offering nearly limitless creative possibilities. However, navigating this variety to find the optimal printing method that guarantees performance, durability, and cost-effectiveness for your specific material can be complex. To help you select the best technique for your design and end-use, dive deeper into each printing method and its unique applications.