Mineral wool board with fillers
A method for manufacturing a mineral wool board, comprising the following steps: providing mineral wool fibers having a fiber length of 50 to 800 μm; providing a binder comprising a mixture of liquid resin and mineral fillers having an average grain size d 50 of 10 nm to 250 μm; gluing the fibers with the binder, and compressing the glued fibers using heat and pressure.
1. A method for manufacturing a mineral wool board comprising the following steps:
providing mineral wool fibers with a fiber length of 50 to 800 μm;
providing a binder comprising a mixture of liquid resin and mineral fillers having an average grain size d 50 of 10 nm to 250 μm; and thereafter in the order indicated:
applying ultrasound to the binder to distribute the fillers in the liquid resin;
gluing the fibers with the binder, and
pressing the glued fibers using heat and pressure to a density of more than 500 kg/m 3 .
2. The method according to claim 1 , wherein the liquid resin comprises phenolic resin.
3. The process according to claim 1 , wherein the mineral fillers comprise kaolin, quartz flour, limestone, and alumina.
4. The method according to claim 1 , wherein the mineral fillers have an average grain size d 50 from 300 nm to 100 μm.
5. The method according to claim 1 , wherein the mineral fillers are added in an amount of 5 to 150% by weight based on the mass of the solids content of the resin of the binder.
6. The method according to claim 1 , wherein the mineral wool fibers have a fiber length of 60 to 700 μm.
7. The method according to claim 1 , wherein the step of pressing the glued fibers takes place at temperatures between 130-180° C.
8. The method according to claim 1 , wherein the ratio of binder, based on the solids content of the resin of the binder, to mineral wool fibers is 10 to 30% by weight.
9. The method according to claim 1 , wherein the gluing of the mineral wool fibers with the binder is carried out in a blow line.
10. The method according to claim 1 , wherein the mineral wool fibers are glued with the binder by means of mechanical gluing.
11. The method according to claim 1 , wherein the pressing is carried out in a continuous double-belt press.
12. The method according to claim 1 , wherein after pressing, the mineral wool board thus obtained is further processed into a floor panel.
13. The method according to claim 1 , wherein the glued fibers are pressed using heat and pressure in such a way that the resulting board has a density of more than 700 kg/m 3 .
14. A mineral wool board comprising:
mineral wool fibers with a fiber length of 50 to 800 μm;
binder in the form of cured resin;
mineral fillers comprising caoline, quartz flour, limestone and/or aluminium oxide with an average grain size d 50 of 300 nm to 100 μm,
wherein the mineral wool board has a density of more than 500 kg/m 3 .
15. The mineral wool board according to claim 14 , wherein the mineral fillers have an average grain size d 50 of 500 to 900 nm.
16. The mineral wool board according to claim 14 , wherein the mineral wool fibers have a fiber length of 60 to 700 μm.
17. The mineral wool board according to claim 14 , wherein the ratio of binder, based on the solids content of the resin of the binder, to mineral wool fibers is 10 to 30% by weight.
18. The mineral wool board according to claim 14 , wherein the mineral wool board has a density of more than 700 kg/m 3 .
19. The mineral wool board according to claim 14 , wherein the binder is in the form of cured phenolic resin.