Platform → Dyeing → Shrinkage during Dyeing → Live Demos

Shrinkage during Dyeing — Live Demos

Four interactive demonstrations across 6 construction × dye-class combinations with diverse distribution shapes.
Shrinkage Chain — Cumulative
Process Step This Step Cumulative
Weaving (loom relaxation) 0.5 – 1.5% 0.5 – 1.5%
Pre-Treatment 1.0 – 2.0% 1.5 – 3.5%
Dyeing 4.0 – 7.0% 5.5 – 10.5%
Sanforizing (finishing) 4.0 – 5.0% 9.5 – 15.5%
Finished Product (measured) — = total
Ranges are indicative typical values across construction classes. Per-construction fitted distributions yield calibrated ranges specific to each fabric. The Finished Product row is the cumulative outcome — what the EPI/PPI Counter measures at final QC. Loom relaxation row not yet built.
About these demos. Dyeing shrinkage is one of the larger contributions to total fabric shrinkage (typically 4-7% vs sanforizing's 4-5%). It varies meaningfully by dye class — reactive on cotton tends to be tight and symmetric, vat and sulphur are right-skewed, polyester blends with mixed dyeing show bimodal distributions. The platform's fitted-distribution layer captures whichever shape the data actually has, not just mean and sigma. This diversity of distribution shapes is visible in Demo 2 below.
DEMO 1 Measurement Capture from Pre & Post Dyeing Images (Layer 1)
EPI/PPI cameras at the entry and exit of the dyeing line capture per-roll fabric density. The platform analyzes both images (the pre-treatment-stage image from the roll archive and the dyeing-stage image), computes shrinkage from the change in density, and pulls the corresponding registry entry. Select a construction below.
Dyeing shrinkage differs from sanforizing. Sanforizing primarily shrinks fabric lengthwise (warp direction). Dyeing shrinks in BOTH directions — warp shrinks more, weft also shrinks meaningfully. So you'll see EPI and PPI both go up from pre to post, with the PPI increase larger than the EPI increase.
A-001-R Channel A Reactive
Cotton 40s × 40s, 110 × 80, reactive dye (Sefam shirting)
μ=4.77% · σ=0.58%
A-005-D Channel A Disperse + Reactive
Polyester/Cotton 50/50, 100 × 78, disperse + reactive (fashion blend)
μ=5.46% · σ=0.94%
B-001-V Channel B Vat
Cotton 20s × 16s, 88 × 64, vat dye (workwear)
μ=6.72% · σ=0.86%
B-003-S Channel B Sulphur
Cotton 20s × 16s, 88 × 64, sulphur dye (heavy workwear)
μ=7.47% · σ=1.35%
C-001-R Channel C Reactive
Cotton 40s × 40s, 120 × 80, reactive dye (Bareezé)
μ=4.43% · σ=0.49%
C-004-R Channel C Reactive
Cotton 30s × 30s, 100 × 76, reactive dye (Kayseria)
μ=5.11% · σ=0.66%
Select a construction above to capture and compute its dyeing shrinkage.
DEMO 2 Fitted Distribution per Construction × Dye Class (Layer 2)
The fitted distribution per construction is more than just mean and sigma — its shape carries operational information. Reactive dyeing tends to be tight, symmetric, normal. Vat and sulphur dyes show right-tail skewness — rare rolls that shrink much more than the mean. Polyester blends with mixed disperse-plus-reactive dyeing show bimodal patterns. Select different constructions below to see the shape diversity.
A-001-R Channel A normal
Cotton 40s × 40s, 110 × 80, reactive dye (Sefam shirting)
μ=4.77% · σ=0.58% · n=220
A-005-D Channel A bimodal
Polyester/Cotton 50/50, 100 × 78, disperse + reactive (fashion blend)
μ=5.46% · σ=0.94% · n=200
B-001-V Channel B skew_right
Cotton 20s × 16s, 88 × 64, vat dye (workwear)
μ=6.72% · σ=0.86% · n=180
B-003-S Channel B skew_right
Cotton 20s × 16s, 88 × 64, sulphur dye (heavy workwear)
μ=7.47% · σ=1.35% · n=160
C-001-R Channel C normal
Cotton 40s × 40s, 120 × 80, reactive dye (Bareezé)
μ=4.43% · σ=0.49% · n=240
C-004-R Channel C normal
Cotton 30s × 30s, 100 × 76, reactive dye (Kayseria)
μ=5.11% · σ=0.66% · n=200
Select a construction above to view its fitted distribution.
DEMO 3 Roll-by-Roll Observations with Deviation Bands (Layers 1 & 3)
Every roll's shrinkage observation is plotted against the fitted distribution's expected range. The shaded green band shows the 95% expected range; the amber band shows the 2-3σ caution zone. Red ×'s mark anomalies — observations more than 3σ from the mean that would trigger real-time alerts.
A-001-R Channel A Reactive
Cotton 40s × 40s, 110 × 80, reactive dye (Sefam shirting)
μ=4.77% · σ=0.58% · n=220
A-005-D Channel A Disperse + Reactive
Polyester/Cotton 50/50, 100 × 78, disperse + reactive (fashion blend)
μ=5.46% · σ=0.94% · n=200
B-001-V Channel B Vat
Cotton 20s × 16s, 88 × 64, vat dye (workwear)
μ=6.72% · σ=0.86% · n=180
B-003-S Channel B Sulphur
Cotton 20s × 16s, 88 × 64, sulphur dye (heavy workwear)
μ=7.47% · σ=1.35% · n=160
C-001-R Channel C Reactive
Cotton 40s × 40s, 120 × 80, reactive dye (Bareezé)
μ=4.43% · σ=0.49% · n=240
C-004-R Channel C Reactive
Cotton 30s × 30s, 100 × 76, reactive dye (Kayseria)
μ=5.11% · σ=0.66% · n=200
Select a construction above to view its roll-by-roll timeline.
DEMO 4 Evaluate a New Observation (Layer 3 interactive)
Imagine a roll has just exited the dyeing line with an observed shrinkage. Select the construction class and enter the observed shrinkage value. The platform compares it to the fitted distribution and reports whether the observation is normal, in the caution zone, or a process-deviation alert.
A-001-R Channel A Reactive
Cotton 40s × 40s, 110 × 80, reactive dye (Sefam shirting)
μ=4.77% · σ=0.58% · n=220
A-005-D Channel A Disperse + Reactive
Polyester/Cotton 50/50, 100 × 78, disperse + reactive (fashion blend)
μ=5.46% · σ=0.94% · n=200
B-001-V Channel B Vat
Cotton 20s × 16s, 88 × 64, vat dye (workwear)
μ=6.72% · σ=0.86% · n=180
B-003-S Channel B Sulphur
Cotton 20s × 16s, 88 × 64, sulphur dye (heavy workwear)
μ=7.47% · σ=1.35% · n=160
C-001-R Channel C Reactive
Cotton 40s × 40s, 120 × 80, reactive dye (Bareezé)
μ=4.43% · σ=0.49% · n=240
C-004-R Channel C Reactive
Cotton 30s × 30s, 100 × 76, reactive dye (Kayseria)
μ=5.11% · σ=0.66% · n=200
Try these: 5.0% (varies by construction) 7.5% (high) 9.5% (very high — alert) 2.5% (very low — alert)
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