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Friday, 7 August 2015

Terry Towel Calculations -1

Assumptions
Number of Ground Warp Ends = 694
Ground Warp Count = 25 tex x 2
Warp Crimp = 8%
Weft Yarn count = 34 tex
Number of Pile Warp Ends = 576
Length of pile part = 102 cm
Pile Ratio (for pile height)= 52:10 (52 cm of pile warp for 10 cm of cloth)
Pile Yarn count = 30 tex x 2
Length of plain part = 4 cm
Picks per cm = 20
Reed Width = 58.4 cm
Grey Length ( Pile and Plain Part) = 106 cm
Fringe Length = 2 cm

How to Determine the Weight of a ground Warp for Terry Towel

Weight of Ground Warp = Weight of ground warp in grey cloth + weight of ground warp in the fringe.

Weight of ground warp in grey cloth = (length of grey cloth x warp crimp factor x no of ground warp threads x warp yarn count in tex )/ (100 x 1000)
= (106 x 1.08 x 694 x 25 x 2)/(100 x 1000)
= 397.25 gms

Weight of Ground Warp in Fringe (here the warp crimp is not involved) = (Fringe length x no of ground warp x yarn count in tex)/ (100x 1000)
= (2 x 694 x 25 x 2)/ (100 x 1000) = 0.69 gms

So Ground Warp Weight = 397.25 +.69 = 397.94 grams.

How to Determine the Weight of Pile Warp in Terry Towel


Weight of Pile Warp = weight of pile warp in pile part + that in plain part + that in fringe

a. Weight of pile warp in pile part ( Pile ratio: 52:10)
=( Length of pile part x number of pile threads x pile length x yarn count in tex) / (100 x 1000)
= (102 x 576 x 52 x 30 x 2)/(100 x 1000)
= 183.31 g

b. Weight of Pile warp in Plain Part
=( Length of plain fabric x number of pile threads x crimp factor x yarn count)/ (100 x 1000)
= (4 x 576 x 1.08 x 30 x 2)/(100 x 1000)
= 1.49 g

c. Weight of Pile warp in fringe ( No crimp , no loop )
= (fringe length x number of pile threads x yarn count)/(100 x 1000)
= (2 x 576 x 30 x 2)/(100 x 1000)
= 0.69 g
Weight of pile warp = 183.31+ 1.49 + 0.69 = 185.49

How to Determine the Weight of Weft in Terry Towel

Weight of Weft Yarn

= (Total no of weft threads x reed width x yarn count)/(100 x 1000)
(Reed width is equal to the length of one weft yarn)
= (106 x 20 x 58.4 x 34)/(100 x 1000)
= 42.09 g


About Terry Towel

Terryclothterry clothterry towelingterry, or simply toweling is a fabric with loops that can absorb large amounts of water. It can be manufactured by weaving or knitting. Toweling is woven on special looms that have two beams of longitudinal warp through which the filler or weft is fired laterally. The first industrial production of terrycloth towels was by the English manufacturer Christ.
There are two types of terry fabrics:
  1. Towel Terry is a [woven] fabric with long loops that can absorb large amounts of water. Its content is usually 100% cotton, but may sometimes contain polyester.
  2. French Terry is a fabric, used in men's, women's and children's clothes. One of its sides is flat, while the other side is with cross loops. It is either 100% cotton or contains polyester with inelastic (Lycra). It is often warp knitted, and the term French Terry is colloquially used for all warp knitted Terry.
It is the length of loops that determines how much fluid is absorbed by the cloth as longer loops provide more surface area to absorb and come in contact with the fluid.
Items that may be made from terrycloth include babies’ nappies (UK English) or reusable diapers (US English), towels, bathrobes, bed linen, and sweatbands for the wrist or head. Terrycloth is also sometimes used to make sweat jackets. Terry toweling hats with a shallow brim were once popular with cricketers (like English wicket keeper Jack Russell), but are no longer in fashion.
An alternative fabric used for towels is waffle fabric. A modern synthetic alternative is microfiber.