Standard Operating Inspection Protocol for Four Point Greige Scoring
ASTM D5430 four-point scoring normalises greige defects per 100 square yards, capping penalties at four points per yard to decide lot acceptance.
Cut-out Rules
Fiber Allocation
Bast line sorting proceeds through mechanical breaking where flax stalks surrender their woody core to fluting rollers before scutching blades strip away residual shives to leave clean long lines. Cut-out rules govern how workers divide these cleaned hanks into distinct quality fractions based on tensile strength and clean length. A standard line yields a top section of long aligned fibres alongside shorter tangled tow swept from the floor channels.
Spinners rely on this physical segregation to feed specific drawing frames without jamming the faller bars.
Yarn Grading
Drawing slivers undergo repeated doubling and drafting inside the preparation room before roving frames twist the attenuating strand into a preliminary package. Cut-out rules dictate the exact linear density limits where a spinning frame operator must sever a defective yarn length and tie a weaver’s knot. Inspectors check the resulting bobbins against regulatory standards for hairiness and unevenness before releasing the material to the warping creels.
Heavy imperfections trigger automatic rejection under mill acceptance protocols.
Cloth Rejection
Weaving looms intersect warp yarns with wet spun filling picks to form plain linen fabric in industrial sheds. Cut-out rules determine the precise threshold of broken ends and oil stains that forces an inspector to downgrade a finished piece from first quality to remnant status. Buyers establish these parameters in supply contracts to protect garment manufacturers from excessive cutting waste.
Fault frequency per hundred square metres dictates final pricing.