Wednesday, May 1, 2019

REED COUNT SELECTION IN WEAVING, REED COUNT CALCULATION, REED SPACE CALCULATION IN WEAVING

REED COUNT SELECTION IN WEAVING:

Before selecting the reed count for a given fabric swatch, it is necessary to know about role of reed in weaving loom.

• The reed of a loom performs beating motion in the loom.

• The reed also decides the ends per inch in the fabric to be woven.

• It also helps to maintain regular gap between two adjacent ends.

Now we tell you about reed count.
“The number of dents per two inches is called reed count in stock port system”. This system is extensively used in weaving industry.

Now we come on the method of reed selection in weaving. Before selecting the count of reed to be used to weave a given fabric, following fabric parameters are analysed precisely:

1 - Dent marks and denting order appearing in the fabric:

A gap between ends left by dent wire of the reed in the fabric during weaving is called dent mark. It looks clearly with the help of counting glass in the grey fabric. It gets little difficult to see the dent mark in the fabric after processing. An expert technician can see these dent mark in grey and processed fabric both with the help of counting glass. These dent marks decide the denting order of warp ends in the reed.

2 – Weft regain:

This very important parameter of the fabric which plays a decisive role in making selection of accurate reed count in weaving. Technician should be very careful during weft regain analysis. “The weft regain is the ratio of  difference between straighten weft length and swatch length to swatch length expressed in the term of percentage”.

Fabric width :

the distance between both selvedge of the fabric is called fabric width.
EPI of the fabric: the warp ends per inch is known as EPI.
Now suppose that required fabric parameters are as follows:
EPI = 100
Fabric width = 80 inches
Weft regain = 4.2 ℅
Denting order= 2 ends per dent.

Please see below reed count calculation sheet:

Please note that the reed count and end per inch on the loom are equal when the denting order is 2 ends per dent.

2. Sir I want to learn how to calculate grey to finish epi and reed space

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