Surface treatment

Solely powder coating as surface treatment should only be used for products that are placed indoors. Powder coating is a durable, protective, and environmentally friendly method for surface treatment method. Compared to traditional painting which consists of much solvent the powder coating is much less polluting. The method can be used to paint many types of material. As color surface the powder coating is enduring and handle both mechanical strains and strong chemicals. The application is done in a dry and electronic way which facilitates an even distribution of the color particles and it is easy to access hidden angles. Powder coat the staircase in optional RAL color. We have the most common colors in stock.

Why does Eurostair® use powder coating?

Eurostairs® products should always be of highest quality, have a well-thought out construction and give more value, including to the environment. Powder coating is a very environmentally effective treatment. Color is applicated without any solvent and gives minimal overspray. Today this is the leading method to paint in an environmentally friendly way. It is also the best painting method when it comes to work environment. The people working with powder coating do not have to stand in a cloud of solvent. For us at Eurostair®, powder coating is the obvious choice. 

Methods for powder coating

Painting with powder coating offers an unlimited choice of color with a very good color match. Powder coating is the dominating painting method today. Powder coating is done with polyester powder with a layer thickness of approximately 60 my. There are not any limitations when it comes to colors. Today we can paint with the whole RAL-scale but also NCS-S if you prefer. It is important to state the gloss when you chose color. Eurostair® recommend gloss between 80-30 where 80 in blanc and 30 is matt. 

Description of the process

To get the right quality of the painted surface it is important with both pretreatment and application of the coat as the following hardening. Since you want to achieve maximal adhesion and sustainability the pretreatment is crucial. The pretreatment normally consists of degreasing and grazing of the surface followed by a chrome free chemical treatment. The pretreatment ends when the material is washed in deionized water. The pretreatment gives the absolute best corrosion resistance and adhesion for products that should be used outdoors. The polyester powder is then applicated by an electrostatic or friction charge and afterwards the powder is hardening in an oven at minimum 180 ºC. Powder coat is applicated and hardened without any solvent. The ventilation air from the powder application is cleaned in effective purifications. The powder that misses the material is taken care of in a recycling system and reversed to the spray gun. 

Eurostair® has chosen RAL Classic® to offer colour-stable industrial colours.
From the 215 shades of the RAL scale, 18 colors were selected as the standard color for our products.
Optionally, we can paint your product in any desired color.

WHY DID WE CHOOSE RAL AND NOT NCS?

RAL Classic is a color collection that is mainly based on the requirements of the industry. These colors are based on a standardized four-digit color code.

RAL has set a number of criteria for creating an industrial color scale.

• The color must be of overriding public interest and not a matter of fashion.
• The color must have a certain minimum distance to existing ones.
• The commercially available pigments, which are not proven to be environmentally hazardous, must be able to be tinted.
• With a few exceptions, the color must have good opacity on "black and white".
• It must be possible to manufacture the screen in such a way that good abrasion resistance is guaranteed.
• Since our products often have to interact with other details to form a whole, we rely on the RAL color system to ensure high quality.

GLOSS, GLOSS

High gloss 80 ≤ x <90 at 60° angle
Satin 35 ≤ x <60 at 60° angle

What do the different glamor characters look like? It can be said that even shiny is 80 - 95*.
Even satin is 63 - 77*. In order to obtain an even matte colour, the gloss is 20 - 30*.
(* Gloss according to ISO 2813/60° angle)