Expancel wet, unexpanded (WU) microspheres are ideal for developing waterborne products. Particle sizes range between 6μm and 24μm (20µm - 80µm in expanded form) offering suitable foaming even in low temperatures. Our low density, highly expandable Expancel WU microspheres lets you increase volume, without adding weight. This, added to its closed cell structure and ability to withstand compression, makes Expancel WU an incredibly useful ingredient in printing ink, wallpaper, polyester film and more.

Production-enhancing benefits with Expancel WU

Expancel WU

Expancel WU specification and SDS. The beauty is in the science.

Request a sample of Expancel WU and speak to our experts for product advice. 

Variation of Expancel Dry content %

Particle Size(1)

µm D(0.5)

Temperature start(2) (°C) Temperature maximum(2) (°C) Density(2)(kg/m3) Safety Data Sheet
642 WU 40 71 ± 2.5 10–16 87–93 127–135 ≤ 17 SDS >
551 WU 40 71 ± 2.5 9–15 94–99 141–149 ≤ 17 SDS >
461 WU 20 68 ± 2.5 6–9 100–106 143–151 ≤ 30 SDS >
461 WU 40 68 ± 2.5 9–15 100–107 144–152 ≤ 20 SDS >
             
007 WU 40 71 ± 2.5 10–16 91–99 138–143 ≤ 15 SDS >
007 WUF 40 71 ± 2.5 10–16 91–99 138–143 ≤ 15 SDS >
031 WUF 40 76 ± 2.5 10–16 80–95 120–135 ≤ 12 SDS >
053 WU 40 71 ± 2.5 10–16 96–103 138–146 ≤ 20 SDS >
909 WU 80 71 ± 2.5 18–24 120–130 175–190 ≤ 10 SDS >
920 WUF 40 71 ± 2.5 10–16 123–133 168–178 ≤ 17 SDS >

(1) "Particle size of Expancel microspheres"
(2) "Thermomechanical analysis of Expancel MS"

Delivered as a wet cake in fibre drums, net weight 50 to 70 kg or in IBC 400 to 500 kg.

Use the product within 2 years after production date, if unopened.

Not all grades available in all locations. Check local sales office for availability.

Why buy from us

  • We have developed and produced Expancel for more than 35 years
  • Own production plants in Sweden, China, USA and Brazil
  • We deliver a total solution, from top quality microspheres to product development support and on-site expansion systems
  • Experienced sales and application engineers will work closely with you all the way
Product specifications
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Expancel WU application areas

Wind turbines

Save costs on raw materials and improve quality

Technical textiles

A lightweight, highly compressible filler for pure quality at reduced production costs

Seats, plastic interiors for automotive

Improve flexibility and surface finishes

Printing inks

Achieve surfact effects like 3D, matt, smooth velvet and more

Genuine leather

Get the most of leather by covering up defects and upgrading for a true quality look

Boats

Microspheres for nonwoven compositions and fairing compounds

All applications

Related products

Expancel SL

Used in applications like core board, box board, paper coatings and leather.

Expancel MB

Masterbatch, mixed with a carrier. Used in thermoplastic applications where Expancel’s closed cells and uniform cell structure gets optimum results.

Expancel FG

Dry, unexpanded and as Masterbatch. Used in food packaging applications such as wine corks, cap seals, packaging and more.

Expancel DU

For applications where no water can be added: industrial nonwoven textiles, underbody coatings & sealants, silicone rubber, shoe soles, etc.

All products

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