BS 2782-7:Method 722B:1996

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 General principles
5 Apparatus
6 Sampling
7 Procedure
8 Expression of results
9 Precision
10 Test report
Tables
1 Designation of test methods
2 Maximum allowable temperature differences as a function of
     distance and as a function of time
3 Typical test temperatures
Figures
1 Typical example of an extrusion rheometer used with
     capillary die
2 Typical example of an extrusion rheometer used with a slit
     die
3 Application of the Bagley correction method
4 Schematic Bagley plot for capillary dies
5 Schematic Bagley plot for slit dies
A.1 Shear-rate ratio versus thickness-to-width ratio H/B
Annexes
A (informative) Method of correcting for the influence of H/B
     on the apparent shear rate
B (informative) Measurement errors
C (informative) Effect of flow conditions on measurement
     accuracy
D (informative) Bibliography

Gives methods to determine fluidity of plastic melts subjected to shear stresses at rates and temperatures approximating to those arising in plastic processing.