B29L2031/726

Process for forming a fibrous nonwoven web with uniform, directionally-oriented projections

A process and apparatus is used for making a fibrous nonwoven web with uniform, directionally-oriented projections by depositing fibrous material onto a first forming surface with holes positioned above a second forming surface with both forming surfaces traveling at different speeds to one another. As the fibers are deposited onto the first forming surface, a portion of the fibers are drawn down into the holes of the first forming surface forming the projections which contact the second forming surface. Due to the speed differential between the two forming surfaces the projections are uniformly skewed in the same direction. The resultant material is particularly suited for use as a wiping material which can be more abrasive in one direction but which is softer to the touch when wiped in the opposite direction thus making it a dual purpose material.

Synergistic visbreaking composition of peroxide and hydroxylamine ester for increasing the visbreaking efficiency

Synergistic visbreaking composition of peroxide and a hydroxylamine ester for increasing the visbreaking efficiency for polypropylene polymers at melt extrusion temperatures below 250 C. and its use in visbreaking polypropylene. The present invention is furthermore related to the use of such visbroken polypropylene polymers for producing melt blown non-wovens with improved barrier properties.

System and process for preparing polylactic acid nonwoven fabrics

A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.

Fabrication of lanyard

Embodiments relate to fabricating a lanyard that includes the assembly of a strap sheet, a fabric strip sheet, and a stopper column. The strap sheet is wrapped around the stopper column and the ends of the strap sheet are adhered to itself to form a closed loop of the lanyard. The inner surface of the strap sheet is attached to the stopper column and the ends of the strap sheet are further attached to the fabric strip sheet to form the assembly. The assembly is cut to obtain multiple lanyards that include a portion of the strap sheet (e.g., a strap), a portion of the fabric strip sheet (e.g., a fabric strip), and a portion of the stopper column (e.g., a stopper). One end of each lanyard can be worn by an individual whereas a second end of the lanyard can be coupled to another structure, such as a handheld controller.

Spinning die for melt-blowing

A spinning die for melt-blowing has plastic passages, a hot air passage, and an opening surface, in which discharge ports and blowing ports open. Adjacent and closest two of the discharge ports are first and second proximate discharge ports. One of the blowing ports corresponding to the first proximate discharge port is a first proximate blowing port, and one of the blowing ports corresponding to the second proximate discharge port is a second proximate blowing port. The first proximate blowing port includes a guide portion that projects away from the center of the first proximate discharge port. The guide portion is formed such that, as the distance from the opening surface increases, the hot air flow guided by the guide portion flows to be separated away from the hot air flow blown onto the molten plastic discharged from the second proximate discharge port.

System and process for preparing polylactic acid nonwoven fabrics

A system for preparing a polylactic acid (PLA) spunbond nonwoven fabric is provided. In particular, the system includes a first PLA source configured to provide a stream of molten or semi-molten PLA resin; a spin beam in fluid communication with the first PLA source, the spin beam configured to extrude and draw a plurality of PLA continuous filaments; a collection surface disposed below an outlet of the spin beam onto which the PLA continuous filaments are deposited to form the PLA spunbond nonwoven fabric; a first ionization source positioned and arranged to expose the PLA continuous filaments to ions; and a calender positioned downstream of the first ionization source.

METHOD FOR DECOLORING OF A TEXTILE MATERIAL
20240044069 · 2024-02-08 ·

The invention concerns a method for decoloring of a textile material, the method comprising the steps of: providing a textile material; providing an alkaline solution containing one or more anionic polyelectrolytes; treating the textile material in the alkaline solution during a treatment period; and recovering at least some of the textile material from the alkaline solution.

RECYCLING PROCESS
20190345306 · 2019-11-14 ·

The invention relates to a process for extracting polyester from packaging. In particular, the invention relates to packaging comprising one or more dyes such as black packaging. The claim process uses a two stage extraction process to convert waste polyester in clean, reusable polyester.

The invention relates to a process for extracting polyester from fabric. In particular, fabric comprising polyester and one or more dyes. The claimed process uses a multistage mechanism to separate dyes from polyester containing garments and reconstitute the polyester.

THREE DIMENSIONAL FABRICS WITH LINER STRIPS AND ASSEMBLY METHODS THEREFOR
20190322028 · 2019-10-24 ·

3D fabrics have multiple layers including an outer dimensional layer of traditional fabric and a liner layer integrated with outer layer. The 3D fabrics have variable depth, typically ranging from between about 0.25 inches to about 2.0 inches. The 3D fabrics are produced from a molding process that creates the outer dimensional layer while adhering it to the liner layer. The 3D fabrics have unique visual properties which make them desirable for a variety of applications.

Stabilizing a deformable fabric
20190299540 · 2019-10-03 ·

A process is provided for producing a stable fabric comprising: 1) providing a first fabric formed from reinforcing fibers, 2) providing a nonwoven web produced from fibers, having softening temperature lower than said reinforcing fibers, on at least 1 one side of said first fabric to form a structure, 3) heating said structure to a temperature between the softening temperature and melting temperature of said nonwoven web, and 4) cooling said structure to thereby provide a stable two-dimensional fabric. In a preferred embodiment, the structure of step 2) is put into a mold prior to heating step 3), heating said structure in the mold according to step 3), cooling said structure in the mold according to step 4) and thereby providing a three-dimensional shaped article. A product is also provided produced by these processes.