BS EN 6059‑407:2019 pdf download.Aerospace series – Electrical cables, installation – Protection sleeves – Test methods Part 407: Mark adherence and print permanence.
6.2 Test method B print permanence – Dry wipe test This method is used to demonstrate the resistance of the mark to a specified environment. After exposure to the environment the test sample is rubbed ‘clean’ by a specified number of rubs using a dry cloth and the clarity and quality of the mark examined. The samples shall be prepared as described in Clause 3. The samples shall be exposed to an environment as specified in the relevant product standard. Following exposure the samples shall be left at ambient conditions prior to testing as specified in the relevant product standard. If no time is specified samples can be tested any time after completion of exposure. All markers should be positioned directly under the rubbing member. The print shall be centrally positioned under the rubbing member. The rubbing member shall be four layers of non-woven towel wipe cloth wrapped around a plastic former to the dimensions shown in Figure 2. The rubbing member shall be loaded to the specified weight.  The standard minimum weight shall be 0,9 kg. The rub test shall be conducted at ambient temperature: (23 ± 2) °C. The number of cycles shall be as specified.  The minimum number of cycles shall be 20. After performing the rub test the sample shall be examined for print legibility (see section 5.4). When using the non-woven towel wipe cloth it should be changed after each test to prevent wear or contamination.
6.3 Test method C print permanence – Wet wipe test This method is used to demonstrate the resistance of the mark when the product is cleaned. This is simulated by the dry sample being rubbed with a cloth soaked in the specified cleaning fluid following which the clarity and quality of the mark examined. The samples shall be prepared as described in Clause 3. All markers should be positioned directly under the rubbing member. The print shall be centrally positioned under the rubbing member. The rubbing member shall be four layers of non-woven towel wipe cloth wrapped around a plastic former to the dimensions shown in Figure 2.
7 Requirements The requirements shall be as specified in the relevant product standard. 8 Reporting of results When reporting results the following information must be recorded: • full product description and batch (lot) number; • printer system and settings used to mark products; • ribbon used in printer (where relevant); • evaluation being undertaken; • rubbing member used; • total weight applied by rubbing member onto sample; • number of cycles completed; • environment sample subjected to prior to print permanence testing; • print legibility – Pass/Fail and print contrast score.BS EN 6059‑407 pdf download.