Yarn Designation
100denier/50 stands for
2 denier
A continuous strand of textile fibers or material in a form suitable for knitting, weaving, or otherwise intertwining to form a textile fabric
Yarn
Hand, strength, drape
The fabric with the higher tensile strength?
Hand evaluation has subjective and objective methods. Discuss both.
Objective: Change or reaction on physical or mechanical actions
Subjective: wearing experience
23s stands for
23 cc single yarn
Each warp or filling yarn floats across tow or more filling or warp yarns with a progression of interlacing by one to the left or right to form a distinct line or wale
Twill weave
three types of tensile testing machines
CRT, CRE, CRL
Constant rate of extension
Constant rate of traverse
Constant rate of loading
The fabric with the higher tensile strength.
100% cotton plain weave fabric
100% cotton satin weave fabric
100% cotton plain weave fabric
The Kawabata hand evaluation system
Relate objective measurement to subjective measurement & find correlation between these two and use the objective measurement to predict fabric hand.
23/2 stands for
23 cc plied yarn made of 2 plies
Strength of a material under tension and is expressed in terms of force
Tensile strength
Name the abrasion method:
A flat object is rubbed against a flat material
Flat (planar) abrasion
Has the higher wrinkle resistance.
100% cotton plain weave fabric
100% cotton satin weave fabric
100% cotton satin weave fabric
The subjective evaluation system of Kawabata hand evaluation
Subjective evaluation: supplied by a team of textile experts
Yarn designation shows 100denier/20. The answer is the size of the filament yarn.
5
the rate of increase of specimen length is uniform with time (commonly used)
CRE (constant rate of extension)
Name the abrasion method:
The material is bent or flexed during rubbing (most common type)
Flex abrasion
This fabric is pliable and has better drape.
The objective evaluation system of the Kawabata hand evaluation
Objective evaluation: measured using a series of instruments
35/2 stands for
35 cc plied yarn made of 2 plies
BONUS + 200 points The size of each single yarn is
the rate of the load being applied to the specimen is uniform with time.
CRL (constant rate of loading)
Name the abrasion method:
The material is folded back on itself while it is being abraded
Edge abrasion
This fabric is easy for soil to show.
Surprise!
The differences between grab tensile test and strip tensile test
Sample size
Effective strength vs. yarn strength