1. Lecture-2

2. Fabric Thickness
Principle(B.S.2544:1954)
Essentially, the determination of the thickness of a
compressible material such as a textile fabric
consists of the precise measurement of the
distance between 2 plane parallel plates when
they are separated by the cloth , a known
arbitrary pressure between the plates being
applied and maintained . It is convenient to
regard one of the plates as the presser foot &
other as the anvil.

3. Considerable points for the application
of the principle:
Fig1-T: Mitutoyo Dial Thickness Gauge 0-1’’
Presser foot
Anvil
Thumb trigger
Plunger Spring
Loaded

4. Fig2-T: Absolute Digimatic Thickness gauge 0-
.4’’

5. Required Consideration in practical
Application of the Principle
• Shape and Size of the presser foot -5:1(dia:
f.thickness)
• Shape and Size of the anvil-2’’> presser foot
dia
• Applied pressure-.1 lb/in²or 10lb/in²
• Velocity of the presser foot- 2/1000in/sec
• Time
• Indication of thickness(accuracy5/1000’’or
more and for thinner 5/100000’’)

6. Shirley Thickness Gauge
For compressible materials like felts,
polurethane foam ,sponge rubber etc.

8. Uses of the results of thickness tests
1) For checking materials against specification.
2) For the study of other fabric properties such
as thermal insulation, resilience, dimensional
stability ,fabric stiffness, abrasion, etc.
3) In the fabric geometry.

9. Thermal Insulation