Count systems, twist, hairiness, strength, evenness. Spinning routes and quality economics. 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. The coverage also includes metrics, data tables, and example calculations so results are reproducible. Where regulations apply, we highlight jurisdiction, scope, and verification pathways. Tools and templates are provided to speed up daily work without sacrificing rigor.
Spinning & Yarn
Determines the total and main draft a ring frame must apply to turn a given roving hank into a target yarn count, and reports the coarsest roving that stays inside the machine draft limit.
Calculator
Spinning & Yarn
Calculates open-end rotor spinning output in kilograms per rotor hour and per shift from delivery speed, yarn count, rotor count and efficiency, and derives the twist inserted at a given rotor speed.
Calculator
Spinning & Yarn
Converts ring frame spindle speed, twist per inch, yarn count, efficiency and spindle count into delivery speed and yarn output in grams per spindle hour and kilograms per shift.
Calculator
Spinning & Yarn
Calculates the true resultant count of a folded or plied yarn from the singles count and number of plies, including the contraction that twisting introduces, so doubling and costing use the real delivered count.
Calculator
Advanced Spinning, Texturizing & Twisting
Converts a target melange shade percentage into the dyed and white fibre weights to actually issue, grossing each component up by its own process loss, and checks the recipe against the integer sliver doublings available in the draw frame creel.
Calculator
Advanced Spinning, Texturizing & Twisting
Converts the required drop in Uster hairiness index into singeing energy per square metre, burner heat load, gas flow per burner and gas consumed per kilogram of fabric, at a given cloth speed, width and areal weight.
Calculator
Advanced Spinning, Texturizing & Twisting
Finds the yarn speed at which a friction false-twist unit loses twist stability, from disc diameter, disc rpm and the working disc-to-yarn speed ratio, with the inserted twist level, yarn diameter and throughput at the limit.
Calculator
Advanced Spinning, Texturizing & Twisting
Converts the three skein lengths of the DIN 53840 crimp test into crimp contraction, crimp rigidity, crimp stability and bulk factor for draw-texturized filament yarn, with linear density per filament.
Calculator
Advanced Spinning, Texturizing & Twisting
Splits a target core-spun technical yarn into its core and sheath linear densities, derives the draft each feed sliver must run at, and returns production per position for DREF friction spinning.
Calculator
Spinning & Yarn
Works out actual draft from fed and delivered hank with doublings, derives the machine draft constant from the draft change pinion, and compares actual against mechanical draft to expose roller slippage on drawframes, speedframes and ring frames.
Calculator
Every record in these registers was sent in by somebody. Submissions are reviewed before they are published.
1,496 machines in the register.Tell us about a missing one 306 event series in the register.Submit a trade fair or conference 3,038 standards tracked in the register.Get the changes by email each week