The present invention relates to a particular execution for a die block for spun-blowing process for forming a fibers or filaments that may further form a spun-blown web or nonwoven comprising such a formed spun-blown web, e.g. as a layer in a multi-layer 5 composite web. The die block comprises nozzles that are readily removable, and preferably chamfered.

A polyester with ultra-high flowability and good stability over time is provided. The polyester can be polybutylene terephthalate (PBT) or another aliphatic polyester, whose intrinsic viscosity (IV) is less than 0.6 dL/g and a carboxylic end group (CEG) content is 15 meq/kg or less, and characterized by having a melt volume rate (MVR) of greater than 400 cm.sup.3/10 min at 250° C. A resin composition of this polyester is provided, which can be meltblown into microfibers of a uniform diameter and a concentrated diameter distribution, forming a fabric with a uniform small pore size.

An apparatus for enrobing a product portion can include at least one polymer spray head adapted to create at least one flow of polymeric fibers to produce at least one polymer enrobing zone and a conveyor system adapted to move at least one product portion from at least one position below at least one polymer enrobing zone and to at least one position above at least one polymer enrobing zone to drop each product portion through one or more polymer enrobing zones a plurality times at different orientations to enrobe each product portion with polymeric fibers.

A process and apparatus for producing a dimensionally stable melt blown nonwoven fibrous web. The process includes forming a multiplicity of melt blown fibers by passing a molten stream including molecules of at least one thermoplastic semi-crystalline (co)polymer through at least one orifice of a melt-blowing die, subjecting at least a portion of the melt blown fibers to a controlled in-flight heat treatment operation at a temperature below a melting temperature of the at least one thermoplastic semi-crystalline (co)polymer immediately upon exiting from the at least one orifice, and collecting at least some of the melt blown fibers subjected to the controlled in-flight heat treatment operation on a collector to form a non-woven fibrous structure. The nonwoven fibrous structure exhibits a Shrinkage less than a Shrinkage measured on an identically-prepared structure including only fibers not subjected to the controlled in-flight heat treatment operation, and generally less than 15%.

A spunbond wipe is provided. At least one of upper and lower layers of the spunbond wipe is a spunbond long fiber layer. An intermediate layer of the spunbond wipe is a wood pulp fiber web. Spunbond long fibers of the spunbond long fiber layer are interwoven in the wood pulp fiber web. Also provided is a manufacturing method of the spunbond wipe.

A spunbond wipe is provided. At least one of upper and lower layers of the spunbond wipe is a spunbond long fiber layer. An intermediate layer of the spunbond wipe is a wood pulp fiber web. Spunbond long fibers of the spunbond long fiber layer are interwoven in the wood pulp fiber web. Also provided is a manufacturing method of the spunbond wipe.

An apparatus for making nonwoven has a spinning device for spinning continuous filaments and moving the spun filaments in a vertical travel direction along a vertical travel path and a mesh belt below the spinning device, traveling in a horizontal direction, and having a multiplicity of vertically throughgoing openings distributed generally uniformly over its surface and of which a portion are plugged. A cooler and a stretcher are provided along the path downstream of the spinning device and above the belt for cooling and stretching the filaments and depositing the cooled and stretched filaments at a predetermined deposition location on the belt. A blower underneath the belt at the deposition location aspirates air through the openings and thereby holds the deposited filaments down on the belt.

The present invention relates to a spinning nozzle apparatus for manufacturing a high-strength fiber.

The spinning nozzle apparatus for manufacturing a high-strength fiber according to the present invention is designed to optimize a heating method for the spinning region of a spinning nozzle in the melt spinning process. The heat transfer method is optimized by disposing the spinning nozzle holes of spinning nozzle commercially available on the outside of, directly under the pack body and heating the spinning nozzle holes with a heating body. In addition, an instantaneous heat treatment at high temperature is adopted to control the molecular entanglement structure in the melted polymer, which enhances the drawability of the thermoplastic resin and hence improves the mechanical properties such as strength and elongation.

Disclosed are fluidic devices and methods for preparing fluidic devices. More particularly, disclosed are fluidic devices having fiber scaffolds and methods for their preparation. Also disclosed are methods for culturing cells using the fluidic devices having fiber scaffolds.

The invention relates to a spunbonded nonwoven having crimped multicomponent fibers, wherein a first component of the multicomponent fibers consists of a first thermoplastic polymer material comprising a first thermoplastic base polymer and a second component of the multicomponent fibers consists of a second thermoplastic polymer material comprising a second thermoplastic base polymer that is different from the first base polymer. The at least one of the first polymer material or the second polymer material is a polymer blend that comprises, further to the respective base polymer, between 1 and 10 weight percent of a high melt flow rate polymer that has a melt flow rate of between 600 and 3,000 g/10 min. The fibers have a linear mass density of less than 1.5 denier. The average crimp number of the crimped multicomponent fibers is in the range of at least 5 and preferably at least 8 crimps per cm in the fiber. The invention further relates to a method for making such spunbonded nonwoven, a multilayer fabric wherein at least one layer comprises such spunbonded nonwoven and a hygiene product comprising such spunbonded nonwoven or multilayer fabric.