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General technical approval/
General design certification
No. Z-40.21-589 of 19 November 2021
Rotational-moulded container combination made
from polyethylene (PE) Type: CUBE Tank 980 l
Certificate of conformity
1
Factory production control
1.1
Materials
(1) As part of the receiving inspection of the raw materials, using the German mark of con-
formity (Ü), the processor must verify that the materials comply with the properties stipulated
in the material's general technical approval.
(2) The material used must be tested before and after processing in accordance with Table 1.
Table 1: Material tests and documentation
Object
Property
Moulding
Trade name,
compound
designation of moulding
compound according to
DIN EN ISO17855-1
MFR,
Density
Moulding
MFR
material
Yield stress
Yield strain
Tensile Young's
modulus
(3) The average of each of three individual measurements must be calculated when deter-
mining values.
1.2
Test specification for moulding material
The requirements referred to in Table 2 apply to rotational-moulded structural elements
made of the moulding compounds referred to in Annex 2, Section 1.
Table 2: Test specifications for moulding materials
Property
MFR
Density
Yield stress
Yield strain
Tensile Young's
modulus
Index a = Initial value according to the general technical approval for the moulding compound (moulding com-
pound) Index e = measured value after processing (on the container)
1
DIN EN ISO 17855-1:2015-02 Plastics – Polyethylene (PE) moulding and extrusion materials – Part 1:
2
DIN EN ISO 1133-1:2012-03
3
DIN EN ISO 1183-1:2019-09
4
DIN EN ISO 527-1:2019-12
5
DIN EN ISO 527-2:2012-06
Z105800.21
Test specifi-
cation
Annex 2,
Section 1
1
Annex 4,
Section 1.2
Unit
Test specification
g/(10 min)
DIN EN ISO 1133-1
MFR 190/2.16
g/cm
3
DIN EN ISO 1183-1
N/mm
DIN EN ISO 527-1
3
(at 50 mm/min
%
haul-off speed)
N/mm
2
(at 1 mm/min)
Designation system and basis for specifications
Plastics – Determination of the melt mass-flow rate (MFR) and melt volume-flow
rate (MVR) of thermoplastics – Part 1: Standard method
Plastics – Methods for determining the density of non-cellular plastics – Part 1:
Immersion method, liquid pyknometer method and titration method
Plastics, Determination of tensile properties, Part 1: General principles
Plastics, Determination of tensile properties, Part 2: Test conditions for moulding
and extrusion compounds
Annex 4
Page 1 of 2
Documen-
Frequency
tation
Ü mark
Every consignment
Record
After operational
start-up, after
change of batch,
but at least
1 x weekly
Requirement
2
max. MFR =
MFR 190/2.16
3
D
= D
(e)
(a)
and -2
19
4
5
≥
11
≥
720
≥
GB
+15%
(a)
± 15%
1.40.21-59/20
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