US 12,280,530 B2
Melt blowing nozzle apparatus
Günter Schütt, Neumünster (DE)
Assigned to Oerlikon Textile GmbH & Co. KG, Remscheid (DE)
Appl. No. 17/800,988
Filed by Oerlikon Textile GmbH & Co. KG, Remscheid (DE)
PCT Filed Feb. 5, 2021, PCT No. PCT/EP2021/052805
§ 371(c)(1), (2) Date Aug. 19, 2022,
PCT Pub. No. WO2021/165057, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 10 2020 001 132.2 (DE), filed on Feb. 20, 2020.
Prior Publication US 2023/0082772 A1, Mar. 16, 2023
Int. Cl. B29C 48/05 (2019.01); B29C 48/345 (2019.01); D01D 1/10 (2006.01); D01D 4/02 (2006.01); D01D 4/06 (2006.01); D01D 5/098 (2006.01)
CPC B29C 48/05 (2019.02) [B29C 48/345 (2019.02); D01D 1/106 (2013.01); D01D 4/025 (2013.01); D01D 4/06 (2013.01); D01D 5/0985 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A melt blowing nozzle apparatus for producing a multiplicity of fiber strands from a polymer melt, having at least one melt inlet, having at least one process air inlet, having a nozzle plate which has a multiplicity of tubes each having a capillary bore for extruding the fiber strands, and having an extrusion plate which is disposed below the nozzle plate and, in a manner corresponding to that of the tubes, has a multiplicity of extrusion openings which for blowing the fiber strands each enclose one of the tubes by way of an air gap, wherein a duct system of a common distribution installation is provided for the connection and distribution of the melt inlet to the capillaries of the tubes, and for the connection and distribution of the process air inlet to the extrusion openings of the extrusion plate, wherein an infeed plate is disposed above the distribution installation, said infeed plate has centrically a central air infeed chamber and eccentrically mutually opposite melt in-feed ducts, wherein the air infeed chamber and the melt infeed ducts are connected to the duct system of the distribution installation.