Spinning & Yarn
Calculates yarn realization from raw cotton issued against finished yarn produced, splits the balance into visible waste and invisible loss, and gives the raw cotton needed per kilogram of yarn for costing.
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Spinning & Yarn
Converts a twist multiplier into turns per inch and turns per metre for a given yarn count, and reports the tex twist factor, surface twist angle and yarn diameter that follow from it.
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Spinning & Yarn
Calculates traveller linear speed and centrifugal force for a given ring diameter and spindle speed, then reports the maximum spindle speed and traveller mass that stay inside safe limits, preventing end breakage and traveller burn-out.
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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.
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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.
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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.
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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.
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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.
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Spinning & Yarn
Multiplies lea breaking strength by English count to give the Count Strength Product, the classic single-figure quality benchmark for ring spun cotton yarn, and compares it against a contracted target.
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Spinning & Yarn
Converts a yarn count between every major numbering system — English cotton (Ne), metric (Nm), tex, decitex, denier, worsted and jute pounds per spyndle — by routing each value through linear density in tex.
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