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Substituting the values into the equation, we have
2.2.5 We can calculate the specimen melt density both via MFR and MVR. In MVR
example, weights up the extruded specimen, m, unit g. The specimen melt density
expresses by D, so that we have:
D=m ÷MVR ×600(g/cm
III. Technical Parameters
3.1 Specification of the specimen extruder
Inner diameter of the die
Length of the die
Inner diameter of the cylinder
Length of the cylinder
Diameter of the piston head
Length of the piston head
3.2 Specification of load
There are 7 Standard test resolution levels loading upon the incremental method.
3.2.1. Level 1
0.325kg=(piston rod ＋adiabatic cover＋1#weight)kg=3.187N
3.2.2. Level 2
1.200kg=(level 1 ＋2#0.875weight)kg=11.77N
3.2.3. Level 3
2.160kg=(level 2＋3#0.960weight)kg=21.18N
3.2.4. Level 4
3.800=(level 3＋4#1.640weight)kg=37.26N
3.2.5. Level 5
5.000kg=(level 4＋5#1.200weight)kg=49.03N
3.2.6. Level 6
10.000kg=(level 5＋6#5.000weight)kg=98.07N
3.2.7 Level 7
21.6000kg=(level 6＋7#2.500＋8#4.100＋9#5.000weight)kg=211.82N
3.3 Temperature of the cylinder
3.3.1 Temperature Range Set the temperature randomly in the range of 50℃ to 400℃
3.3.2 Reach the specified temperature in a moment by PID.
3.3.3 Resolution of the digital display
3.3.4 Temperature Fluctuation
Fluctuation at the 10mm position of upper end ≤±0.5℃ (50 to 250℃)
Fluctuation at the 10mm position of upper end ≤±1℃ (250 to 400℃)
3.3.5 Temperature gradient
Temperature gradient at the top 10~150mm position of the extruder is less than 1℃.
3.4 Time display
The time is automatically calculated by the build-in clock, Time tolerance ±1s/h
3.5 Power
3.6 Dimension
LARYEE TECHNOLOGY CO.,LTD.
XNR-400D Melt Flow Indexer operation manual
MVR =42.7×l÷t =42.7×30÷135=9.489（cm
Ф2.095±0.005mm
8.000±0.025mm
Ф9.550±0.025mm
160mm
Ф9.475±0.015mm
6.350±0.100mm
0.1℃.
450W, ~220V±10%, 50Hz
520mm×270mm×550mm
3
3
)
/10min）
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