Pretreatment, dyeing auxiliaries interface, mechanical and chemical finishes for handle, shrinkage, and fastness. Energy, water, and effluent optimization are emphasized. This section explains practical decision criteria, typical test methods, and failure modes that matter in real production. Readers get checklists, calculation steps, and case examples connecting specifications to cost, reliability, and compliance. Links map core concepts to upstream inputs and downstream processes so choices remain consistent across sourcing, manufacturing, and end-use performance. Each article includes definitions, diagrams where helpful, and plain-language notes to help newcomers ramp quickly while giving experienced professionals the depth needed to troubleshoot and optimize. Standards references are cited with context, and whenever trade-offs exist, we make them explicit so you can defend decisions.
Finishing & Environment
Fits the per-wash decay of an AATCC 22 spray rating from a measured pair, projects the rating at the claimed wash count with and without heat reactivation, and reports the washes a target rating survives either way.
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Dyeing, Printing, Color Management & Chemical Control
Models sublimation transfer as a saturating time-temperature dose, returning the efficiency a given press cycle achieves against the ceiling, the ink transferred and left on the paper, and what the residue costs per square metre.
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Dyeing, Printing, Color Management & Chemical Control
Combines spectrophotometer drift, repeatability and inter-instrument agreement in quadrature into an expanded uncertainty, subtracts it from the shade tolerance as a guard band, and reports which of the three terms is actually consuming the tolerance.
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Finishing & Environment
Computes the surface strain a rubber belt develops around the compression roller, the compression actually applied at a given utilisation, the residual shrinkage that leaves, and the belt thickness or utilisation a target residual would require.
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Dyeing, Printing, Color Management & Chemical Control
Treats reactive wash-off as the geometric dilution series it is: computes the unfixed dye left after dyeing, the fixed fraction each rinse removes, the residual after a given number of baths, the baths actually needed to reach a target and the absurd single-bath liquor ratio that would match them.
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Finishing & Environment
Turns drum and roller speeds into the surface speeds that matter, the slip between wire points and cloth for both pile and counter-pile rollers, the balance between them, and the relative travel a pass puts through the fabric.
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Dyeing, Printing, Color Management & Chemical Control
Derives screen open area and theoretical paste volume from mesh count and thread diameter, converts it into wet pick-up, dry deposit and dye applied per square metre, and gives the apparent viscosity a power-law paste has at squeegee shear rather than at rest.
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Dyeing, Printing, Color Management & Chemical Control
Models cyclic trimer released from polyester during high-temperature dyeing against what the cooling bath can still dissolve, returning the mass at risk of depositing on fabric and machine and the drop temperature above which nothing crystallises out.
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Finishing & Environment
Builds the full heat balance for a pad-dry-cure line: sensible heat in the carried water, latent heat of evaporation and sensible heat in the cloth to cure temperature, then the burner rating, the specific energy and what five points off the mangle would save.
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Finishing & Environment
Places a measured critical surface tension on the AATCC 118 test-liquid ladder to give the oil repellency grade achieved, the margin to the next rung, the critical tension a target grade demands and the Zisman contact angle at that liquid.
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