Slasher Dyeing
Slasher dyeing is a warp dyeing method in which warped warp yarns are kept aligned in a sheet and continuously dyed, then dried and sized before being supplied for weaving.
Contents6 sections
Definition and Process
Slasher dyeing is a method of continuously dyeing yarns arranged in a sheet with multiple warp ends. In general, it is treated as a continuous process that includes immersion in dye liquor, squeezing, drying, and sizing to suppress fuzz and yarn breakage during weaving.
The target of dyeing is not the woven fabric, but the warp yarns before weaving. Therefore, in designs that dye only the warp and leave the weft white or a different color, the structure of the weave and wear can create color contrast, producing a distinctive appearance.
Characteristics and Appearance
The texture and appearance obtained by this method vary greatly depending on the dye, fiber, sizing agent, weave structure, and finishing. Slasher dyeing itself is not a process that determines functions such as softness, stretch, or water absorption.
When the warp is dyed with indigo or similar dyes and combined with white weft yarns, the warp color appears strongly on the face of the woven fabric. In designs where the surface color changes through wear and washing, the color contrast between warp and weft and the weave structure affect the appearance.
Main Applications
It is used for fabrics in which the warp is dyed first, and is seen in denim, chino cloth, and workwear fabrics. It is not limited to heavy fabrics; it is also applied to shirting fabrics, sashiko-style fabrics, and double weaves that make use of warp-weft color contrast.
It is not a technique limited specifically to autumn and winter materials. Applications are determined by the fabric weight, density, fiber type, and weave structure, and are considered according to the desired appearance and durability, from lightweight clothing to bottoms, jackets, and uniforms.
Selection and Handling Notes
When selecting fabric, do not judge performance by the name slasher dyeing alone; check the blend ratio, dye, colorfastness, shrinkage, and finishing conditions. For dark colors and indigo types, it is important to evaluate with transfer from dry and wet rubbing, color transfer during washing, and contact staining during storage in mind.
Before sewing, check the grain line, width, and shrinkage of the roll, and if necessary, relax the fabric and wet it out. During sewing, also pay attention to fading on dark fabrics and color changes around seams. For products, it is common to follow the care label, wash separately, wash inside out, and avoid leaving them wet.
- Check lot-by-lot color differences and color tone differences along the warp direction using a sample roll.
- Check for color transfer caused by friction with light-colored linings, accessories, bags, and similar items.
- If product washing is planned, test shrinkage, twisting, and color loss after washing in advance.
Differences from Similar Terms
Yarn dyed refers broadly to methods of dyeing yarn before weaving. Slasher dyeing is a specific method within this category, in which the warp is arranged in a sheet and continuously dyed. Piece dyed means dyeing the fabric after it has been woven, so the stage of dyeing is different.
Rope dyeing is also a method for dyeing warp yarns, but it differs from slasher dyeing in that the warp is handled as a rope-like bundle. Which method is used is selected according to the desired color tone, dyeing behavior, production conditions, and other factors.
Frequently Asked Questions
Is slasher dyeing only used for denim?
It is a method well known for denim, but it is not exclusive to denim. It is a yarn dyed method in which the warp is aligned in a sheet and dyed, and it is used for woven fabrics that make use of warp-weft color contrast and for various fabrics in which color is applied to the warp. Actual applications vary depending on the fiber, structure, fabric weight, and finishing.
Does slasher-dyed fabric fade?
The degree of fading is not determined by whether it is slasher dyed alone. It depends on the type of dye, dyeing conditions, post-treatment, fiber, and the conditions of rubbing and washing. In particular, for dark colors and indigo types, check rubbing fastness and wash fastness, and design the product and care instructions with color transfer in mind.
What is the difference from rope dyeing?
Slasher dyeing handles multiple warp yarns in a sheet aligned across the width, whereas rope dyeing handles the warp in a rope-like bundle. Both are used for warp dyeing, but they are not the same because the equipment, process structure, and design conditions for the appearance of the color are different.
