Minimum Colour Quantity Deciding a Range Plan before Design Does
Minimum colour quantities set dye vessel efficiency and enforce range plan fabric allocations long before garment sketches reach the pattern desk.
Greige Width
Dimensional Measurement
Physical distance across the fabric as it comes off the loom or knitting machine defines the raw dimensions of the material before any processing occurs. This greige width is measured from one selvedge to the other and includes the edges that are later trimmed or used for pinning. It represents the maximum possible area available for the finishing plant to work with.
Because the fabric has not yet been washed and bleached, it contains the natural oils and sizes added during the yarn preparation. This measurement is the starting point for calculating the final usable width of the finished goods. It is a critical specification in the initial purchase agreement between the weaver and the finishing factory.
Shrinkage Calculation
Relationship between the raw size and the final dimension is determined by the expected shrinkage during wet processing. Every fabric reacts differently to the heat and moisture of the dye house, and the greige width must be wide enough to accommodate these changes. For instance, a cotton weave might lose ten percent of its width during scouring and bleaching.
If the raw fabric is too narrow, the finished product will not meet the required specifications for the garment markers. Finishing technicians use the stenter frame to pull the fabric back to a target size, but they are limited by the initial dimensions of the greige goods. Overstretching a narrow fabric to meet a wide specification can lead to poor dimensional stability and excessive residual shrinkage in the final garment.
Machine Constraint
Selection of the loom or knitting machine depends entirely on the required width of the fabric. In weaving, the greige width is limited by the reed space of the machine and the number of warp ends being used. Mills often produce fabric in standard widths like sixty or seventy inches to maximize the efficiency of the equipment.
If a customer requires a non standard size, the mill must adjust the yarn density or use a wider machine which can increase the cost per yard. The tension of the yarns during the weaving process also affects the final width as the fabric relaxes once it is removed from the loom. Monitoring these dimensions in the greige state ensures that the subsequent finishing stages are viable.
Procurement Strategy
Economic planning for garment production relies on an accurate understanding of the usable area. While the greige width is the total dimension, the effective width for cutting is usually two to three inches narrower. Planners use this information to determine how many garment pieces can fit across the fabric roll.
If the mill delivers fabric that is narrower than the greige specification, the marker efficiency drops and the cost of the garment rises. This measurement is verified at the mill before the rolls are shipped to the finishing plant. Any deviation from the agreed size is documented and can lead to a price adjustment or rejection of the lot.
This dimension is the foundation of all subsequent textile yield calculations.