From Rock to Fiber

Basalt rock

Step 1.

Through a covered tunnel fill the furnace with basalt stones measuring  approximately 50 to 100 mm in diameter.

Maintain the furnace temperature between 1300 oC and 1450 o

In  here the basalt stones are plasticized , melted and liquefied.


Step 2.

Maintaining a precise pressure , pass the liquefied yellow-red basaltic melt through a heated feeder tube and into the bushing. As the melt is forced through the bushing nozzles ,razor-thin , hair-fine basalt fibers are formed.

Step 3.

In order to ensure a uniform manufacturing process , the continuous fibers are coated with a size., which facilitates the textiles process and serves as a bonding agent between the fiber and the matrix. The size is specially developed for this process and will be adapted for specific applications.

Step 4.

Finally , the finished basalt fibers are drawn over a winder and wound onto a so-called spinning cake .

Step 5.

As a raw material for further processing for use in a variety of applications, the rovings are the most diverse nuances.