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Norm
ÖNORM EN ISO 7765-1
Issue date: 2004 10 01
Plastics film and sheeting - Determination of impact resistance by the free-falling dart method - Part 1: Staircase methods (ISO 7765-1:1988)
1 .1 This part of IS0 7765 specifies methods for the determination
of the energy that causes plastics film and sheet less
than I mm in thickness to fail under specified...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 14 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
1 .1 This part of IS0 7765 specifies methods for the determination
of the energy that causes plastics film and sheet less
than I mm in thickness to fail under specified conditions of impact
of a free-falling dart from a specified height that would
result in failure of 50 % of the specimens tested.
1.2 Two methods of test are described.
1.2.1 Method A employs a dart with a 38 mm + I mm
diameter hemispherical head dropped from a height of
066 m + 0,OI m. This method may be used for materials
whose impact resistance requires masses of about 0,05 kg to
about 2 kg to fracture them.
1.2.2 Method B employs a dart with a 50 mm + I mm
diameter hemispherical head dropped from a height of
I ,50 m + 0,OI m. Its range of applicability is from about 0,3 kg
to about 2 kg.
1.3 The measurement technique is the staircase method. A
uniform missile mass increment is employed during testing and
the missile weight is decreased or increased by the uniform increment
after test of each specimen, depending upon the result
(failure or no failure) observed for the specimen.
ÖNORM EN ISO 7765-1
2004 10 01
Plastics film and sheeting - Determination of impact resistance by the free-falling dart method - Pa...
Norm
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Issue date :
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Norm
Issue date :
1988 12 29
Plastics film and sheeting — Determination of impact resistance by the free-falling dart method — Part 1: Staircase methods