Safety Tape Application Temperatures

Monday, January 29th, 2018

heskins safety tape applicationLet’s talk temperatures, specifically Heskins safety tape application temperatures, why we state them and how they affect our products. We normally suggest a minimum application temperature of over 10°C for our materials, one can apply at lower temperatures but plus 10°C is a great indicator. One question we get asked is why?

Safety Tape Application Science

Our safety materials are self-adhesive. Self-adhesives are held in a semi-liquid state under the protective liner. When the liner is removed, the anti-slip tape is then pressed down onto the surface. At the point that pressure is applied (our adhesives are officially categorised as Pressure Sensitive Adhesives, PSA) the adhesive ‘wets out’. The adhesive is forced onto the application surface, inside the adhesive are small globules of resins along with chains of acrylic. The resins grab and the acrylic starts to move and slowly bond onto the surface. The application temperature is a critical element.  If the temperature is too low then the resins are too rigid and cannot be readily pressed onto the surface resulting in possible initial grab failure. The acrylic, which provides the strong long-term bond, cannot flow as its viscosity has increased so cannot correctly hold, resulting in a weaker long-term grip.

Surface Temperature

One must factor in that the anti-slip tape application is not merely dependent on the air temperature but the mainly on the surface temperature, this is what it is will adhere on to. One possible solution is to raise the surface temperature prior to adhesion, this can be achieved with the use of heat guns etc.

Once correctly applied the temperature can safely vary without any problems within certain parameters. For example, our H3401N black standard anti slip tape can happily cope with temperatures between -30°C and up to +70°C. If a customer requires higher temperatures there are alternatives; H3406 is highly temperature resistant (being metal foil based). Different plastics and adhesives can be used.

For more information on safety tape application you can contact the sales team by phone, live chat or alternatively fill out the contact us form and a member of our sales team will get back to you.

What is the Future of Anti Slip Testing and Measurement?

Friday, January 5th, 2018
pendulum test

Pendulum Testing Device

Since the development of the first Coefficient of Friction (CoF) tests we have come a long way. The first simple, and mainly static machines, have now been supplanted by mainly dynamic testing methods with strict measures and controls to allow for some form of consistency from test to test. We now have excellent anti slip testing methods, including;

Pendulum

Covered under the BS 7976-2 method. A dynamic test. Very prescriptive controls so provide excellent reliability. Uses 4S or TRRL sliders.

Floor Friction Tester

Commonly known as the Tortus method. Tests a dry floor using a dynamic method.

torus friction tester

A Torus Friction Tester

Inclined planes

Typically covered by the German regulation BGR 181 (derived from ZH 1/571) these are a ‘real life’ test using a ramp that inclines using either barefoot applications or shoes. DIN51130 is the most common.  It uses an oil/water mixture to simulate an industrial slippage area, the operative wears Lupos Picasso S1 boots. The ramp is inclined to generate the CoF figure. DIN51130 test results are represented as an R figure. R9 being the least effective, R13 being the most effective. Be aware that R9 is only a plane angle inclination of 6°.

Inclined Ramp Test

Inclined Ramp Test

DIN51097 is to simulate a barefoot slip test. A barefoot operative stands on a plane with water. DIN51097 is required by standard GUV-I 8527. DIN51097 figures are represented as either A, B or C.  A being the least effective CoF and C being the most effective.

Static Slider

The most prevalent being the North American ASTM C1028. A static test using a weighted slider, the weight changes from 22.7 to 4.5kg. Now only typically used for archived test requirements, most requirements for this have been moved onto the aforementioned anti slip testing methods.

A Hybrid Coefficient of Friction Future?

astm c1028-07

The now virtually defunct ASTM C1028

It is unlikely that in the present future one single unified international standard will prevail. Countries have their own standard for measuring non-slip values but also the different test methods have exposed that some are more accurate than others for different situations. An approval for an international standard ISO/DIS 10545-17 so far has come to nothing but it did provide solid discussion.

Australia and New Zealand issued their standard AS/NZS 3661.1. AS/NZS 3661.1 is a ground-breaking standard for anti slip requirements, it brings in multiple testing methods, each one already proven. The test includes;

  1. Floor Friction Tester for dry tests.
  2. Pendulum with 4S and TRRL for wet tests.
  3. Inclined plane tests DIN51130 and DIN51097.

The standard later moved to AS/NZS 4586, handbook HB 197 and eventually AS/NZS 4663.

In 2003 work was performed on a European standard, SUA 1 brought in ENV 12633. Work is still ongoing but it encouraging to think that this may, eventually, evolve into something that can work across all borders and cover all materials.

Heskins is a proactive industry leading manufacturer of non-slip materials. We provide this technical information, and all updates, free to all. We CoF test all our products and can provide you with external anti slip testing house certificates. We take our responsibilities seriously; our advice is backed by deep technical knowledge and keep all our customers up to date with all relevant international standards. For further information please speak with our sales teams via phone, live chat or alternatively fill out the contact us form and a member of our sales team will get back in touch with you as soon as possible.

ISO7010 Colour Standards in Factory and Warehouse Marking

Thursday, December 21st, 2017

warehouse optimisation with permarouteInternational standards are becoming more prevalent for our warehouse marking tape PermaStripe. One of our aims is to always inform our customers of what standards are potentially applicable and to provide some form of detail.

What is ISO7010?

ISO7010 is the international standard created in 2003 to assist with consistent safety sign regulation across Europe. This regulation concerns workplace safety signs and colour markings for accident prevention, fire protection, health & hazard information and emergency evacuation. Regulations are put in place to help provide a standardised system that is recognised throughout Europe.

permaroute colour standardsInterestingly, the UK didn’t adopt this standard until 2013, before then abiding by its own standard, BS 5499. The UK changed to ISO7010 in January that year once the standard became a European Normative ( EN ) and adopted by European law.

Heskins try to choose colours that are vibrant and are a true representation of the colour being neither too dark not too light. We now produce a range of colours that match ISO7010, the colours apply to both rolls and warehouse markers. The colours used are detailed below;

  • Black – RAL 9004 Signal Black (used on all as representation for black)
  • Blue – RAL 5005 Signal Blue (used for warehouse markers)
  • Green – RAL 6032 Signal Green (used for PermaStripe, green/white PermaRoute and warehouse markers)
  • Red – RAL 3001 Signal Red (used for PermaStripe, red/white PermaRoute and warehouse markers)
  • White – RAL 9003 Signal White (used for green/white PermaRoute, red/white PermaRoute and warehouse markers)
  • Yellow – RAL 1003 Signal Yellow (used for PermaStripe, black/yellow PermaRoute and warehouse markers)

You can read more of our articles and product pages relating to 5S warehouse optimisation here.

For more information on our ISO7010 standardised products, you can contact the sales team via phone, live chat or fill out the contact us form and a member of our sales team will get back to you as soon as possible.