08.05.2012 09:57

Powder colours

Powder colours

Powder colours

Powder colours are solvent free coatings, consisting of various synthetic resins, pigments and special additives.

Production of powder colours takes place in three-stage production process:

  • weighing and mixing color components (resin, hardener, pigments, additives)
  • extrusion (ejection) on the cooling cylinders
  • grinding to the required grain size (resulting substance is the final product)
picture 1        Production of powder colours the TIGER

Powder colours don’t contain solvents and are environmentally friendly, since during the curing process no solvents evaporate, and thus any damage to groundwater or soil can be avoided.

Surface finish by means of powder colours is very economical. The proportion of varnish powder, which when applied doesn’t adhere to painted part, can be easily reused (if the paint shop has facility for colour recycling), thus approx. 90% of the material usage is achieved.

Powder colours v. Liquid colours

Powder colours Liquid colours
Colour doesn’t content solvents (no VOC emissions ) Colour contents solvents ( 2 - 20% )
Low risk of fire High risk of fire
Wide range of shades Wide range of shades
Varying degrees of gloss Varying degrees of gloss
Different surface types (smooth, structures…) Mostly smooth surface
Colour application mostly in one layer Colour application in more layers
High-quality surface pretreatment before coating (if available in the paint shop) Most of paint shops don’t have pretreatment
High financial and space requirements for the paint shop Low costs
Dimensional limit possibilities Coating of dimensionally sized products (e.g. trans)
After colour is cooled the surface finish is completed and the product is possible to pack and dispatch Colour needs to “ripen”. Only then it possible to pack and ship the product
Surface finish has approx. 10x bigger barrier protection than with liquid colours -
Very high yield ( if available cabin with recycling ) Colour spraying becomes immediately waste
Corrections are possible with over-coating with powder and liquid colours Corrections are possible with over-coating with wet colour
Correction pens and sprays Correction pens and sprays
Minimal production amount is 20 kg Production even of minimal amount
Certification according to QUALICOAT and GSB Certification according to QUALICOAT and GSB

 

Basic types of powder colours

1) Outdoor facade colours

Powder colours on the base of polyester, polyurethane and fluoropolymer resins, with special pigments permanent on the light, resistant to chalking and heat.

Qualities:

  • certificate QUALICOAT
  • high resistance to weather effects
  • light fastness
  • very good mechanical qualities
  • good diffusion of colour 
  • stability of batch RAL-tints according to VDL-directive 10

Use:

  • facade elements, window profile
  • steel structural elements
  • parts for automotive and train industry
  • equipment for ship industry
  • agricultural machinery
  • Etc.

Marking of colours TIGER:
series 14 and 29 ( AAMA 2603-02 ), series 58 a 68 ( AAMA 2604-05 ), series 75 ( AAMA 2605-05 ).

Marking of colours IGP:
IGP-HWN 3001 – series 59, IGP-DURA face - series 52, 58 and 80.

2) Exterior colours

Powder colours on the base of polyester and polyurethane resins.

Qualities:

  • good resistance to weather effects ( unsuitable for facade usage )
  • good mechanical qualities
  • good diffusion of colours
  • stability of batch RAL-tints according to VDL-directive 10

Use:

  • agricultural machinery
  • structural parts in automobiles
  • garden machinery
  • sports good
  • office furniture
  • Etc.

Marking of colours TIGER:
Series 47 and 59.

Marking of colours IGP:
IGP-DURA pol - series 62 and 64, IGP-DURA than - series 81 and 83.

3) Interior colours

Powder colours on the base of epoxy or epoxy-polyester resins.

Qualities:

  • good mechanical qualities
  • very good chemical resistance
  • excellent diffusion of colour

Use:

  • office and school furniture
  • storage and shelf parts
  • machine parts
  • toys
  • radiators
  • Etc.

Marking of colours TIGER:
series 07, 09, 69 and 89.

Making of colours IGP:
IGP-DURA pox - series 02 and 03, IGP-DURA mix - series 31, 33, 34 and 37.

picture 2        RAL 3000 - One year outdoor exposure in the Čermná ve Slezsku 

4) Special anticorrosive colours

TIGER – SHIELD – Two-layer anticorrosive system meeting the requirements of DIN EN ISO 12 944 - C5. The first layer TIGER Dryzink or TIGER Dryprotector, the second layer facade colour.

Use:

  • anticorrosive application
  • steel constructions

Qualities:

  • very good anticorrosive protection
  • good mechanical qualities
  • good chemical resistance

TIGER Dryzink:

  • zinc base
  • suitable mainly for welded constructions

TIGER Dryprotector:

  • non-zinc base
  • suitable mainly for geometrically complex products


IGP – KORROPRIMER 1001 – Basic anticorrosive powder colour per steel meeting requirements of DIN EN ISO 12 944 - C5 ( with double-layer system ).

Use:

  • priming on blasted, zinc phosphate or zinc steel underlay

Qualities:

  • very good anticorrosive protection
  • very good mechanical qualities
  • excellent chemical resistance 
  • all IGP powder colours are suitable for over coating
  • liquid colours are suitable for over coating (it’s necessary to perform the adhesion test )

1001A...A00:

1001A...V00:

  • specially modified degassing ability for galvanized underlay


IGP – KORROPRIMER 30 – Basic anticorrosive powder colour for aluminium.

Use:

  • priming on pre-treated aluminium

Qualities:

  • very good anticorrosive protection
  • good mechanical qualities
  • all IGP powder colours are suitable for over coating
  • liquid colours are suitable for over coating (it’s necessary to perform the adhesion test )

5) Anti-Graffiti colours

Powder colours with surface suitable for removing unwanted sprayer’s creations.

Qualities:

  • due to special surface easily cleaned
  • high weather resistance
  • very good diffusion of colour

Use:

  • noise barriers
  • means of public transport
  • construction of subway
  • facades
  • Etc
picture 3        Anti-Graffity

6) Metallic colours

Powder colours with metallic effect are produced in two possible ways:

  • “Mixed“ metallic colours: Metallic pigments are added into the colour. During the coating (due to the difference of the charging quality and different weight of individual components of colour) there is separation of pigments and colour. There is increase of risk that the surface finish will have different tone!!
  • “Bonderized” metallic colours: Metallic pigments by means of special technology (bonderizing) stick to the colour and thus prevents the separation of individual components of the colour during coating. The resulting tone is then the same. I recommend only bonderized colours of high quality.


Powder metallic colours are produced in all types (facade polyesters, polyesters, epoxies,..) Another important division of colours is according to pigments.

  • Metallic shades with AL-pigmentation: Appearance of these shades is very metallic. Al-pigment is formed in the form of scones and the colour comes up to surface of the colour during curing in the furnace. This is the biggest disadvantage of AL-pigmentation. On the surface it’s exposed to the environment and pigment will oxidize in a very short time. It will gradually darken and decrease of gloss of the whole area. Al-pigment behaves like classic aluminium – stains blackly. Due to these characteristics it is recommended that these shades are over coated with transparent varnish.
  • Metallic shades with pearled pigment: These powder colours differ significantly in their ability to imitate aluminium shade, which isn’t so striking as when using AL-pigment. To create the impression of metallic shades AL-pigments aren’t used, but pigments with “pearled effect” are used. These pigments are based on mica that is coated by metal oxide by means of special technology. These pigments don’t oxidize in the weather. In practise this means that colours with pearled pigment are so called “single layer system”, which doesn’t require protective over coating by transparent varnish.

7) Special colours

  • Transparent colours: They are used mainly to protect the surfaces with already final effective surface (chrome, polished aluminium ...).
  • Antibacterial colours: With special antibacterial ingredient that as part of the colour releases ions when in contact with moisture. They are used in hospitals, medical practises, food processing plants, etc.
  • Colours for direct contact with drinking water: It fulfils the strictest requirements of directives of EU for contact with drinking water. They are used primarily to adjust valves, pipes, tanks and systems for water.
  • Conductive colours: Colours for easy grounding of products and against discharge of static electricity.
  • High temperature resistant colours: Resistant to temperature up to 400oC.
  • Ultra thin film colours: from 30µm

Print


RSSRSS

News

17. November

certification for DB

Product certification for DB (Deutsche Bahn), according to DBS 918 340.

News archive

Sending news by e-mail

If you wish to receive newsletter please sign in.

Sending news by e-mail

© 2018, ALU - COLOR s. r. o.

Private policy | Sitemap

Created by eBRÁNA s.r.o. | Powered by CMS WebArchitect | SEO a internetový marketing