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Features & Advantages

Released by Nanoval GmbH & Co. KG 07.23.18

After nearly 20 years of development, the family owned Nanoval in Berlin, Germany - 13 people in total - has developed its own spunlaid process, which is an alternative to meltblown. It can be used for synthetic polymers but also for cellulose (solvent spinning). In both cases, the process uses a special laval nozzle and is patented in many countries. Spinbeams from Nanoval have individual nozzles, which are arranged in many rows. The process idea origins from the metal powder atomization, where it is also applied for every day.

CAPABILITY	POLYMER	ADVANTAGE	CAUSE / CAUSED BY …	COULD BE INTERESTING FOR e.g. …
Cellulose Spunlaid can be produced by our process, if taken for solvent spinning (lyocell process)	Natural polymer cellulose	Saving costs for cellulose NW production	No need to produce fibers first, which are later arranged to a carded NW	Companies, who really want to sell NW made of renewable and sustainable material (trees), which also biodegrades in the soil and not in a so-called industrial composting plant at 60° like PLA: no greenwashing





NW consisting of endless filaments, which are fine (abt. 4-6 µm) to coarse (abt. 25 … 30 µm)	Natural polymer cellulose	Flexible system adjustable by process parameters	Split-swing effect from Nanoval results in much finer filaments than the large spinning nozzle (abt. 0.6 mm)	Companies who want to produce NW material consisting of finer filaments, than the usual staple fibers produced by known fiber producers, which have diameters of abt. 10 - 15 µm



Large spinning nozzles	Natural polymer cellulose	Robust system for paper pulp, dissolving pulp, cotton linters, waste paper, wood particles or other additives (such as catalysts etc.)	Split-swing effect from Nanoval is a gas dynamic effect, performed by process parameters rather than by a small nozzle diameter	a) Companies, who want to put in additives into the fibers, as we did with wood particles, only to show the possibility and to save pulp, since wood is cheaper and does not need to be dissolved b) Companies, who want to recycle or to use cheap pulp resources rather than the more expensive dissolving pulp





Self-intermingling of filaments of adjacent spinning nozzels	Natural polymer cellulose	Even unbonded webs are quite strong in both MD and CD. NW made of staple fibers always nee a bonding - our cellulose spunlaid is a textile already direct after spinning	Gas-dynamic Nanoval-effect, really something special	The bonded NW should have a higher tenacity than cellulose NW made of staple fibers




Spunlaid fully flushable	Natural polymer cellulose	We have improved our system and are also able to spin directly cellulose NW, which are fully flushable	A new process idea, which cannot be revealed here	Companies, who want to produce flushable wipes





Robust process for Nanoval's synthetic spunlaid, an alternative to MB	Many polymers have been spun, such as PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more (also Vistamax and Kraton were tested)	Flexible system	Precisely defined gas-dynamics due to laminar flow	Companies, who are looking for a robust and flexible system or generally are interested for something new





Stronger web, higher elongation compared to MB	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more	Generally a higher web tenacity and higher elongation compared to MB even in unbonded state	Gas-dynamic Nanoval-effect, really something special	For applications, where strong NW is required





Less energy consumption than MB in terms of kWh/kg (NW material) compared to MB	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more	Higher profits for the NW producer or lower prices can be offered	Circular and individual air nozzles have a smaller cross-section than a long gap as in MB, the throughputs per hole are larger (4 … 20 g/min/hole)	Every NW producer





Wide adjustable range of filament diameters, mixed nano/micro filaments 0.6 - 30 µm	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more	New types of NW material, e.g. for filters, can be produced	The fine diameters of filaments are generated by a special gas-dynamic effect, which can be adjusted by the process parameters	Every NW producer, who wants to step-out from the MB-corridor





Higher productivity in terms of kg/h/m (belt width) compared to MB	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more	Reduced specific investment costs	A good process with large throughputs per hole	Every NW producer





Higher air throughput through the NW compared to MB	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more	Reduced energy costs for the air fan e.g. in filter applications	A special structure of Nanoval's NW since we have a kind of stochastic effect due to the special gas-dynamics in our laval nozzle for spinning (up to sonic speed at the outlet)	Filter applications or venting purposes of NW






Spinning nozzles arranged in many rows	PP, PE, PA, PET, PPS, PBT, PC, PAN or PLA and more and also for cellulose spunlaid	Each row could be supplied by another polymer	Every row of nozzle can have its own supply distribution of polymer	a) Special new NM products can be developed consisting of various polymers, which cause special effects due to different shrinkage etc. b) Special new NW products can be developed, which are produced with differently sized spinning nozzles