Nanten HM Bio

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Product description

Two-component, solvent-free, rubbable epoxy coating. Good mechanical resistance.

  • The coating is very resistant to grease, oils, fuels, salt, detergents and temporary loads of mild acids and bases. In areas subject to thermal shock/steam washing, minimum thickness of the rubbed coating must be 6 mm.
  • Used for the priming of dry concrete bases and as binder and surface varnish for rubbable epoxy coatings.

Applications

  • Production and storage facilities of the food industry that are subject to hard wear
  • Industrial kitchens
  • Process industry facilities
GTIN code Product name Product number Package size
Nanten HM Bio part A 10 l 15005 10 l
Nanten HM Bio partl B 5 l 15091 5 l

Base requirements and coating conditions

The strength class of the concrete must be at least C25/30 and the wear resistance class 3. The relative humidity of the concrete must be below 95% and the surface temperature must be at least +3⁰C above dewpoint. During the drying of the coating, the temperature of the ambient air, the surface and the coating must be over +15⁰C and relative humidity must be below 80%.

New concrete floor

Laitance and any uncured cement are removed by either surface grinding or shot blasting. All loose material that could negatively affect adhesion is removed, and cement dust is carefully vacuum-cleaned.

Old concrete floor

Laitance and damaged concrete are removed by grinding or shot blasting. All loose material that could negatively affect adhesion is removed, and the base is carefully vacuum-cleaned. Dirty floors should be washed and rinsed with synthetic detergent before performing any other base treatment work. Any old coat is removed completely.

Priming

Priming is done with Nanten HM Bio. The primer must close all the pores in the concrete, so that a sealed and intact membrane is formed on top of the surface. The primer is covered with primer sand as the work progresses.

Patching work

Small cavities and cracks are cleaned and filled with e.g. epoxy paste mixed from Nanten HM Bio and fine back sand. Larger and wider overfills, straightening and slopes can be made with a compound made of HM BIO and back sand (0.7–1.2 mm).

Mixing

Premix component A and component B of HM Bio Epoxy in separate containers, estimate the required amount of compound, taking into account the size of the area to be treated and application time of the compound. Mix the components together in the right mixing ratio, mix with a slow-speed mixer for approximately two minutes, avoid mixing air into the compound. Keep mixing and add the required amount of selected Nanten colour sand or colour sand mix, continue mixing for about one minute, make sure to scrape the corners of the container.

Mixing ratio

Component A 2 parts, component B 1 part.

Spreading rate

4 mm membrane thickness
Resin consumption in rubbed coating approx. 1.3 l/m2
Approx. 0.2–0.3 l/m2 in priming
Approx. 0.35–0.45 l/m2 in surface varnishing
Approx. 7 kg of back sand /m2

Coating

The mixed paste is poured onto the floor in a continuous flow and then applied at the desired thickness with an adjustable trowel. The application is done in lanes, so that the surface can be finished from the untreated floor. After application, the paste is sealed into a flat surface either by hand with a steel trowel or by rubbing it mechanically.

Surface varnishing

After the coating has been rubbed sealed and dried, it must be varnished with thinned Nanten HM Bio Epoxy. We recommend applying the varnish twice to make the surface hygienic and easy to maintain.

Skirting boards

Skirting boards are made with epoxy rubbing paste, but thickening agent (Sylothix) is added to the paste to make it easier to work. The skirting boards can be made 100 mm high, for example.

Storage and handling of waste
See the separate storage and disposal instructions https://www.fescon.fi/en/material-bank

Colour The colour of the coating will depend on the Nanten colour sand or colour sand mix.
Package size Component A in a 10-litre metal container, component B in a 5-litre plastic containe
Storage

+5°C...+25°C, maximum shelf life 6 months. Store in a warm environment, sealed in original containers.

Mixing time about 2 minutes
Density

1,1 kg /l

Usage temperature

+15°C...+25°C

Usage time 20–30 minutes after being poured onto the floor. The time becomes shorter as temperature rises.
Drying time

Dry to touch after 7 hours (+25°C) and 14 hours (+15°C). Fit for light traffic after approximately 12 hours (+25°C) and approximately 24 hours (+15°C). Fully cured after 7 days.

 

Adhesion strength

1,5 N/mm2

Reaction to fire Bfl-S1
Relative air humidity During coating work and drying of the coating, below 80%
Chemical resistance Class II
Thinner In priming, 10–30 % by volume with Nanten A Epoxy Thinner. The resin is not thinned in rubbing coating. In surface varnishing, 20–40 % by volume with Nanten A Epoxy Thinner.
Method of application Application with adjustable trowel and finishing with steel trowel or mechanically with a finishing machine. A suitable roller is used for priming and surface varnishing.
VOC content

VOC 150 g/l (ready-to-use mixture)

EU VOC 2004/42/ EC (cat A/j) max. 500 g/l (2010)

Limitation of liability, product use notes and restrictions: Please familiarize yourself with Fescon Oy's general terms of delivery and the design and work instructions related to the product.