Potential of foam-laid forming technology in paper applications

Experimental results on the flow rheology of fiber-laden aqueous foams

“…We can thus conclude that in aqueous foams fibers do not interact with each other or flocculate to the same extent as in plain aqueous suspensions. This result is in accord with the fact that paper samples created by using foam forming technology have generally much better formation (smaller fiber flocs) than the samples created with traditional water forming [17].…”

“…After a long silent period, foam-coating [13,14] and foam-forming are now attracting increasing interest in paper industry [15][16][17][18][19][20]. The use of foam allows the inclusion of a wide variety of alternative raw materials, such as nanoparticles [21], nanocellulose [22] and long flexible fibers.…”

3D-oriented fiber networks made by foam forming

“…Recently, foam forming was studied extensively to develop the understanding of foam-fiber interactions (Al-Qararah et al 2012Lappalainen and Lehmonen 2012;Lappalainen et al 2014;Mira et al 2014) and also to find the potential applications of this technology in papermaking Lehmonen et al 2013;Poranen et al 2013) as well as other specialty products, e.g., filters and insulators (Cervin et al 2013;Jahangiri et al 2014). Foam was introduced to the paper industry already in the mid-1960s.…”

A unique microstructure of the fiber networks deposited from foam–fiber suspensions

“…This provides excellent sheet homogeneity and enables the increase of solids content of the fibre furnish during the forming operation [3][4][5][6]. In addition to that, fibre materials with low density can be obtained [5][6].…”