Important formulas for blow room section:
Amount of Trash removal
Cleaning Efficiency of Blow room section: -------------------------------- x 100
Total amount of Trash
Length of Lap (yds) Unit weight
Lap Hank : -------------------------------- x --------------------------
Unit length Weight of Lap (lb)
Surface speed of calendar roller x 60 x Eff % x wastage % x scatcher number
Production of Blow room/hr : ---------------------------------------------------------------------------------- ,lb
36 x 840 x hank
D Knock off Wheel Warm Wheel
Length of Lap : ----- x ------------------------ x -------------------, yds (D= Dia of Bottom calendar roller)
36 Change Wheel Single Warm
Important Formulas for Cotton Carding Section:
Present DCP x Present Hank Present DCP x New Sliver weight
Required DCP : ---------------------------------- = -------------------------------------------
Required Hank Present Sliver weight
Lap Length (Yds) x 1 lb
Lap Hank : ------------------------------------
840 x Lap weight (lb)
Sliver Length (Yds) x 1 lb
Carded Sliver Hank : ------------------------------------
840 x Sliver weight (lb)
Carded Sliver Hank Feed or Lap Weight Mechanical Draft x 100
Actual Draft : ------------------------ = --------------------------- = -----------------------
Feed or Lap Hank Carded Sliver Weight 100 - wastage
Actual Draft x 100 - wastage Draft Constant
Mechanical Draft : ---------------------------------- = ---------------------
100 DCP
Speed of the circumference of Doffer (inch/min) x Efficiency x 60
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
or
Speed of the circumference of Calendar roller (inch/min) x Eff x 60 x Tension Draft
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
Amount of Trash removal
Cleaning Efficiency of Blow room section: -------------------------------- x 100
Total amount of Trash
Length of Lap (yds) Unit weight
Lap Hank : -------------------------------- x --------------------------
Unit length Weight of Lap (lb)
Surface speed of calendar roller x 60 x Eff % x wastage % x scatcher number
Production of Blow room/hr : ---------------------------------------------------------------------------------- ,lb
36 x 840 x hank
D Knock off Wheel Warm Wheel
Length of Lap : ----- x ------------------------ x -------------------, yds (D= Dia of Bottom calendar roller)
36 Change Wheel Single Warm
Important Formulas for Cotton Carding Section:
Present DCP x Present Hank Present DCP x New Sliver weight
Required DCP : ---------------------------------- = -------------------------------------------
Required Hank Present Sliver weight
Lap Length (Yds) x 1 lb
Lap Hank : ------------------------------------
840 x Lap weight (lb)
Sliver Length (Yds) x 1 lb
Carded Sliver Hank : ------------------------------------
840 x Sliver weight (lb)
Carded Sliver Hank Feed or Lap Weight Mechanical Draft x 100
Actual Draft : ------------------------ = --------------------------- = -----------------------
Feed or Lap Hank Carded Sliver Weight 100 - wastage
Actual Draft x 100 - wastage Draft Constant
Mechanical Draft : ---------------------------------- = ---------------------
100 DCP
Speed of the circumference of Doffer (inch/min) x Efficiency x 60
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
or
Speed of the circumference of Calendar roller (inch/min) x Eff x 60 x Tension Draft
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
Textile Calculations | All Formulae of Textile Calcualtions for Spinning/Weaving/Knitting
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Important formulas for blow room section:
Amount of Trash removal
Cleaning Efficiency of Blow room section: -------------------------------- x 100
Total amount of Trash
Length of Lap (yds) Unit weight
Lap Hank : -------------------------------- x --------------------------
Unit length Weight of Lap (lb)
Surface speed of calendar roller x 60 x Eff % x wastage % x scatcher number
Production of Blow room/hr : ---------------------------------------------------------------------------------- ,lb
36 x 840 x hank
D Knock off Wheel Warm Wheel
Length of Lap : ----- x ------------------------ x -------------------, yds (D= Dia of Bottom calendar roller)
36 Change Wheel Single Warm
Important Formulas for Cotton Carding Section:
Present DCP x Present Hank Present DCP x New Sliver weight
Required DCP : ---------------------------------- = -------------------------------------------
Required Hank Present Sliver weight
Lap Length (Yds) x 1 lb
Lap Hank : ------------------------------------
840 x Lap weight (lb)
Sliver Length (Yds) x 1 lb
Carded Sliver Hank : ------------------------------------
840 x Sliver weight (lb)
Carded Sliver Hank Feed or Lap Weight Mechanical Draft x 100
Actual Draft : ------------------------ = --------------------------- = -----------------------
Feed or Lap Hank Carded Sliver Weight 100 - wastage
Actual Draft x 100 - wastage Draft Constant
Mechanical Draft : ---------------------------------- = ---------------------
100 DCP
Speed of the circumference of Doffer (inch/min) x Efficiency x 60
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
or
Speed of the circumference of Calendar roller (inch/min) x Eff x 60 x Tension Draft
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
Amount of Trash removal
Cleaning Efficiency of Blow room section: -------------------------------- x 100
Total amount of Trash
Length of Lap (yds) Unit weight
Lap Hank : -------------------------------- x --------------------------
Unit length Weight of Lap (lb)
Surface speed of calendar roller x 60 x Eff % x wastage % x scatcher number
Production of Blow room/hr : ---------------------------------------------------------------------------------- ,lb
36 x 840 x hank
D Knock off Wheel Warm Wheel
Length of Lap : ----- x ------------------------ x -------------------, yds (D= Dia of Bottom calendar roller)
36 Change Wheel Single Warm
Important Formulas for Cotton Carding Section:
Present DCP x Present Hank Present DCP x New Sliver weight
Required DCP : ---------------------------------- = -------------------------------------------
Required Hank Present Sliver weight
Lap Length (Yds) x 1 lb
Lap Hank : ------------------------------------
840 x Lap weight (lb)
Sliver Length (Yds) x 1 lb
Carded Sliver Hank : ------------------------------------
840 x Sliver weight (lb)
Carded Sliver Hank Feed or Lap Weight Mechanical Draft x 100
Actual Draft : ------------------------ = --------------------------- = -----------------------
Feed or Lap Hank Carded Sliver Weight 100 - wastage
Actual Draft x 100 - wastage Draft Constant
Mechanical Draft : ---------------------------------- = ---------------------
100 DCP
Speed of the circumference of Doffer (inch/min) x Efficiency x 60
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
or
Speed of the circumference of Calendar roller (inch/min) x Eff x 60 x Tension Draft
Production of Carding Machine: --------------------------------------------------------------------------, lb/hr
36 x 840 x Hank
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