Abstract: A 3D printer is specified which has a print head for extruding a transparent ink filament and a transparent printing plate for depositing the extruded ink filament. Furthermore, the 3D printer has an imaging apparatus which provides a pattern composed at least of straight stripes and an optical capture device which is configured to capture an image of the pattern and of the deposited ink filament from a bottom side of the printing plate during the specified printing operation of the 3D printer. Furthermore, the 3D printer has a controller which is configured to derive at least one characteristic value for the printing operation from the image captured by the capture device.

Abstract: A 3D printing system includes a first cartridge container for reversibly receiving a first cartridge which stores printing fluid for 3D printing, and a print head with an outflow opening. The 3D printing system further has a first fluid line, which connects the first cartridge container to the print head to supply printing fluid to the print head. In addition, the 3D printing system has a first temperature-control channel, which encases the first cartridge container and the first fluid line externally, and which is passed through, in the intended state of use, by a temperature-control medium.

Abstract: A process for producing a polymer nonwoven fabric includes providing a polymer blend of a thermoplastic elastomer and a further thermoplastic material. Fibers are produced from the polymer blend. A nonwoven semifinished product is formed from the fibers. In order to then produce the polymer nonwoven fabric, a volume increase is produced by mechanical stretching of the nonwoven semifinished product and subsequent relaxation. A process for using a semifinished nonwoven product and a process for using a polymer nonwoven are also provided.

Abstract: A process for producing a polymer nonwoven fabric includes providing a polymer blend of a thermoplastic elastomer and a further thermoplastic material. Fibers are produced from the polymer blend. A nonwoven semifinished product is formed from the fibers. In order to then produce the polymer nonwoven fabric, a volume increase is produced by mechanical stretching of the nonwoven semifinished product and subsequent relaxation. A process for using a semifinished nonwoven product and a process for using a polymer nonwoven are also provided.

Abstract: In order to determine a rheological property of a fluid, the fluid is conveyed with a constant volume flow rate through a nozzle and the fluid strand thereby generated is deposited on a substrate. A relative movement takes place between the nozzle and the substrate at a forward feed velocity value. A contour of the liquid strand between the nozzle and the substrate is optically measured, and an extensional viscosity as a rheological property is deduced from knowledge of the volume flow rate, the forward feed velocity value and the contour of the fluid strand.

Abstract: In order to determine a rheological property of a fluid, the fluid is conveyed with a constant volume flow rate through a nozzle and the fluid strand thereby generated is deposited on a substrate. A relative movement takes place between the nozzle and the substrate at a forward feed velocity value. A contour of the liquid strand between the nozzle and the substrate is optically measured, and an extensional viscosity as a rheological property is deduced from knowledge of the volume flow rate, the forward feed velocity value and the contour of the fluid strand.

Abstract: Material webs suitable for use in conjunction with disposable absorbent articles are disclosed herein. The material webs comprise a melt additive that when subjected to thermal energy may be encouraged to bloom across the entirety of the web or in localized areas of the web where localized thermal energy is applied.

Abstract: Material webs suitable for use in conjunction with disposable absorbent articles are disclosed herein. The material webs comprise a melt additive that when subjected to thermal energy may be encouraged to bloom across the entirety of the web or in localized areas of the web where localized thermal energy is applied.

Abstract: A permeable nonwoven web having a plurality of fibers and/or filaments of a first polymer matrix forming an outer surface of each of the plurality of fibers and/or filaments is described herein. The first polymer matrix includes a hydrophilic melt additive and/or a tactile modifying melt additive blended therein. Energy application across the entirety of the web, or parts thereof, promotes the blooming of the melt additive from the first polymer matrix such that bloom areas are disposed on at least a portion of each of the outer surfaces of the fibers and/or filaments.

Abstract: A permeable nonwoven web having a plurality of fibers and/or filaments of a first polymer matrix forming an outer surface of each of the plurality of fibers and/or filaments is described herein. The first polymer matrix includes a hydrophilic melt additive and/or a tactile modifying melt additive blended therein. Energy application across the entirety of the web, or parts thereof, promotes the blooming of the melt additive from the first polymer matrix such that bloom areas are disposed on at least a portion of each of the outer surfaces of the fibers and/or filaments.

Abstract: Material webs suitable for use in conjunction with disposable absorbent articles are disclosed herein. The material webs comprise a melt additive that when subjected to thermal energy may be encouraged to bloom across the entirety of the web or in localized areas of the web where localized thermal energy is applied.