ISO 4675:2017 pdf download

ISO 4675:2017 pdf download.Rubber- or plastics-coated fabrics — Low-temperature bend test
1 Scope
This document specifies a method for determining the ability of fabrics coated with rubber or plastics to resist the effect of low temperature when subjected to bending at specified temperatures after definite periods of exposure. This method is applicable to material with a thickness within the range 0,1 mm to 2,2 mm. For materials of greater thickness than this, modifications to the standard equipment apply (see 9.2, third paragraph).
Because fabrics coated with rubber or plastics are used in different applications requiring low temperature flexing, no general relationship between this test and service performance can be given or implied.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2231, Rubber- or plastics-coated fabrics — Standard atmospheres for conditioning and testing
ISO 2286-3, Rubber- or plastics-coated fabrics — Determination of roll characteristics — Part 3: Method
for determination of thickness
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at http://www.iso.org/obp
— IEC Electropedia: available at http://www.electropedia.org/
4 Principle
Test pieces, after conditioning, are exposed to low temperature for a predetermined period.Subsequently, the chilled test piece is subjected to a bending test, followed by examination.
5 Apparatus
5.1 Cold chamber, in which the test pieces are exposed to low temperature, sufficient in size to contain the bending fixture used for testing the test pieces and to permit the operation of the fixture to bend the test piece without removal from the chamber.
The cold chamber shall also have sufficient work space to permit the conditioning of test pieces as outlined in Clause 8. It shall be capable of maintaining a uniform atmosphere of cold air or any other suitable gas at specified temperatures to within a tolerance of ±1 °C.
5.2 Bending jig, for bending the test pieces, as shown in Figure 1 and Figure 2.
Masses, mass tolerances and dimensions shall be as specified in Figure 2.
5.3 Glass plates, of sufficient number, having dimensions of approximately 125 mm × 175 mm, for use when conditioning all test pieces.
The thickness of the glass plates shall be such as to permit easy handling.
5.4 Gloves, for handling test pieces within the cold chamber.
The gloves will be conditioned at the same temperature as the test pieces. A second pair of gloves at room temperature shall therefore be available for wearing within the cold gloves as protection for the operator.