7 Fusion
Operating instructions GF 500
24
Heating element butt fusion of PP
Fusion table/DVS 2207/11 guidelines
Heating element temperature 210 °C
±
10 °C
1 2 3 4 5
Nominal wall
thickness
Equalize
Bead height on the
heating element
after equalization
time (equalization
at
0.10 N/mm
2
)
Heat soak
(heat soak
≈
0.01 N/mm²)
Change-over Join
Time until max
pressure reached
Cooling
Cooling time at
fusion pressure
(p = 0.10 N/mm²
± 0.01)
mm
mm
(min.value)
s s
(max. time)
s min
(min.value)
up to 4.5
0.5
up to 135
5
6
6
4.5 – 7.0
0.5
135 – 175
5 – 6
6 – 7
6 – 12
7.0 – 12.0
1.0
175 – 245
6 – 7
7 – 11
12 – 20
12.0 – 19.0
1.0
245 – 330
7 – 9
11 – 17
20 – 30
19.0 – 26.0
1.5
330 – 400
9 – 11
17 – 22
30 – 40
26.0 – 37.0
2.0
400 – 485
11 – 14
22 – 32
40 – 55
37.0 – 50.0
2.5
485 – 560
14 – 17
32 – 43
55 – 70
Curve for standard
values for heater
temperatures
Process steps for
heating element butt
fusion
1
2
3
4
5
