After recently failing a durability test, I read the UL 969 standard - it does not specify a hexane rub test.
So having UL approved labels and ink combinations is not sufficient to pass the hexane rub test. Regards, David David Gelfand | Conformity Specialist | Kontron Canada | 450 437 4661 x2449 |[email protected] From: Gary McInturff [mailto:[email protected]] Sent: Tuesday, May 06, 2014 10:56 AM To: [email protected] Subject: Re: [PSES] Standards for labels Agree except I too have had to repeat the rub test before UL will send the report and data off to their CB report writers. We use and describe the UL recognized labeling system - which includes the ink (ribbon), printer, label surface material, and label adhesives are all as part of the recognized system. It is not difficult to find a match of all components from several vendors. Searching UL on recognized marking systems will give you plethora of choices. Obviously a printer will handle many types of media and they have a variety of printing speeds and widths. The same printer can be used for general printing on the production floor as well as the specialized labels requiring known durability. We simply chose a printer that was amongst the list of recognized systems that also met our other printing needs. It was a simply choice and the product BOM easily identifies those labels which need the full ink/material/combination. About the only trick is to notice that some label materials are recognized for the surfaces you are attaching them to - the adhesive has been tested to those materials during the recognition process. Again a wealth of options to choose from. Gmac From: Ted Eckert [mailto:[email protected]] Sent: Monday, May 05, 2014 8:12 PM To: [email protected]<mailto:[email protected]> Subject: Re: [PSES] Standards for labels Hello Dave, See IEC 60950-1 section 1.7.11 for the requirements regarding the durability of marking. This section states that any marking required by the standard pass a durability test. This test requires resistance to rubbing with a water soaked cloth and with a cloth soaked in a petroleum spirit. Although the standard only specifies the chemical tests, it does state durability in a general manner. It is interpreted to require durability of marking for more than just chemical resistance including parameters such as temperature and humidity. There may be no tests for environmental conditions, but a test lab would likely fail marking if it came off in hot and humid environments. Labels approved by UL are considered to pass this requirement as long as they are used within the limits stated in their UL files. For pre-printed labels, the UL file will specify the substrates for which the label is considered acceptable. For example, some labels may be acceptable for metal but not plastics. There may be additional limits for conditions such as temperature. For print-on-demand labels, the UL file will also specify acceptable combinations of label stock, printers and ink. For IEC 60950-1, most NRTLs and CBTLs will accept UL approved labeling methods, but not necessarily. You may still have to perform the testing of section 1.7.11. I cannot comment on IEC 60204-1 as I am not familiar with that standard. Ted Eckert Compliance Engineer Microsoft Corporation [email protected]<mailto:[email protected]> The opinions expressed are my own and do not necessarily reflect those of my employer. From: Nyffenegger, Dave [mailto:[email protected]] Sent: Monday, May 5, 2014 5:58 PM To: [email protected]<mailto:[email protected]> Subject: [PSES] Standards for labels Hi Folks, The NRTLs I work with in the past have asked for technical details for labels when doing safety compliance certification but I'm not sure why. For example self-adhesive labels used for switches and indicators on control panels, caution/warning labels, etc. The EC Machinery and Low Voltage Directives call for indelible marking but I've not seen anything in EN 60950-1 or EN 60204-1 that references requirements for labels for example. I've seen UL listings on a lot of labels and label material. Are there specific requirements (other than indelible) or standards applicable to CE compliance for these types of labels? Thanks -Dave David P. Nyffenegger, PMP, SM-IEEE Product Development Manager Bell and Howell 3791 South Alston Avenue Durham, NC 27713 Phone: 919.767.6419 Web: www.bellhowell.net<https://urldefense.proofpoint.com/v1/url?u=http://www.bellhowell.net/&k=b2vlTQszY8VIpYRvaG%2By2A%3D%3D%0A&r=wfHsZjj2K46njWikwK7lPtcx6a6MPoEnW107Er86quU%3D%0A&m=3beQCMxi3kmxTt79rJhZbwqMHySNajKAhegUDuxmJCo%3D%0A&s=7185cd52c05e9c0cb3210a55170b44c3a89c0760d0437826eed4e82425354221> - ---------------------------------------------------------------- This message is from the IEEE Product Safety Engineering Society emc-pstc discussion list. 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To post a message to the list, send your e-mail to <[email protected]> All emc-pstc postings are archived and searchable on the web at: http://www.ieee-pses.org/emc-pstc.html Attachments are not permitted but the IEEE PSES Online Communities site at http://product-compliance.oc.ieee.org/ can be used for graphics (in well-used formats), large files, etc. Website: http://www.ieee-pses.org/ Instructions: http://www.ieee-pses.org/list.html (including how to unsubscribe) List rules: http://www.ieee-pses.org/listrules.html For help, send mail to the list administrators: Scott Douglas <[email protected]> Mike Cantwell <[email protected]> For policy questions, send mail to: Jim Bacher: <[email protected]> David Heald: <[email protected]>
