Melt Electrospinning Designs for Nanofiber Fabrication for …
In spite of the fact, that the small hand-operated Wimshurst generator melt electrospinning setup was designed for in-situ wound dressing, researchers are still struggling to …
Several properties offilament fibers made from recycled …
In this experiment carried waste recycling process bottled mineral water bottles of PET into filament fibres with the aid of a melt spinning.
A versatile hot melt centrifugal spinning apparatus for …
Fig. 1. Hot melt centrifugal spinning apparatus. Polymer pellets are introduced inside the rotating funnel and begin to melt. Once the pellets have fully melted, the centrifugal …
Equipment
Hills provides custom designed solvent spinning lines for laboratory, pilot and production applications. They particularly specialize in the areas of hollow fiber membranes, equipment for solvent spinning of bicomponent fibers, and acrylic fibers production for carbon fiber precursors.
Gel Spinning Process
Gel spinning, also known as semi melt spinning, is a method that prepares high-strength and high-elastic modules fiber in the gel state. After the extrusion of the polymer solution or plasticised gel from the spinnerets, it is cooled in solvent or water before being stretched into gel fiber by ultra-high extension.
Electrospinning and Electrospun Nanofibers: Methods, …
During melt spinning, a polymer melt is extruded from a spinneret to generate fibers upon cooling. Gel spinning is used to produce fibers with high mechanical strength or other …
Melt-Processing of Lignin
Melt-spinning is the most versatile, convenient, and economic method of polymer fiber production because of its high productivity, simplicity, and the absence of need for auxiliary materials. The process does not use solvents, and more homogeneous lignin fibers are achieved from the liquid state.
Melt Spinning
Melt spinning is among the most versatile and commonly used methods for producing polymeric filaments. The fundamentals of melt spinning, modeling of polymeric flows …
CN1576402A
The present invention provides a melt spinning apparatus that executes spinning so as to obtain a uniform multifilament yarn having a uniform fineness. A melt spinning apparatus includes a plurality of spinning packs 2 installed in a pack housing 33 contained in a spinning beam 1, the spinning packs 2 being arranged in a line, an integral cooling …
Melt Spinning | SpringerLink
Melt Spinning. Melt spinning is a fiber fabrication technique from polymers or polymer/diluent systems that can be melted. Both fibers (filaments) and hollow fibers can …
Melt-Spun Fibers for Textile Applications
Multicomponent melt-spinning, where several functionalities can be combined in one fiber, is also discussed. Finally, textile applications and melt-spun fiber specialties are …
Chapter Review on Computer Simulation of Melt Spinning: …
This chapter discusses an approach for process simulation in the design of melt spinning process for finding optimal design parameters concerning spinneret, quench air unit and other technical parameters for maximum throughput and quality. The property of as-spun fiber is a function of structural parameters at a given condition and orientation of …
Structural formation during melt spinning process
The structural changes during melt spinning process of polyethylene, polypropylene and polybutene-1 were studied making use of direct measurements. A model spinning apparatus was devised for this purpose.
Melt-Spun Fibers for Textile Applications
Multicomponent melt-spinning, where several functionalities can be combined in one fiber, is also discussed. Finally, textile applications and melt-spun fiber specialties are presented, which emphasize how ongoing research efforts keep the high value of fibers and textiles alive.
Melt Blown Process
The equipment used for melt making is not completely linked to extrusion machinery, since the used melt viscosity in this process is low compared to other spinning processes, in the range of less than 100 pa, eg, PP is used in an MFR rage of 125–3000 (230/2.16).
Apparatus of melt spinning and take-up system for …
Three different polypropylene resins were selected to develop microporous membranes through melt spinning, annealing and stretching. The effects of take-up speed, cooling rate, stretching, and ...
Fiber Spinning (Chapter 7)
Our analysis of fiber spinning in this chapter will be based on an inelastic rheological model of the stresses. This rheological description appears to be adequate for polyesters and nylons, which comprise the bulk of commercial spinning applications, and our spinning model is essentially the one used in industrial computer codes. This is a …
Melt spinning: technology
By optimizing the equipment and its operation, it is possible to increase the spinning performance and reduce the amount of waste, thereby increasing process efficiency. This led to the possibility of adding more and more yarn ends to each spinning position for different POY, FDY and BCF processes.
Melt electrospinning: Electrodynamics and spinnability
The electrodynamics of the polymer melt as well as its effects on fiber spinnability in the framework of laser-heated melt electrospinning was investigated. We challenge the classic views in the aspects of the molten Taylor-cone, the thinning process, and the jet deformation. A temperature-voltage phase diagram was constructed to …
A new magnetic melt spinning device for patterned …
A three-dimensional mobile magnetic melt spinning device model is constructed, a magnetic spinning test prototype is developed, and the prototype performance and …
A versatile hot melt centrifugal spinning apparatus for …
Fig. 1. Hot melt centrifugal spinning apparatus. Polymer pellets are introduced inside the rotating funnel and begin to melt. Once the pellets have fully melted, the centrifugal force created by the motor rotational speed extrudes the polymer melt from the two channels inside the spinneret and jet formation begins.
Schematic diagrams of single roller melt-spinning apparatus …
Download scientific diagram | Schematic diagrams of single roller melt-spinning apparatus (a) and ribbon (b). from publication: Glass Forming Ability, Thermal Stability, and Magnetic Properties of ...
Process–Property Relationships for Melt-Spun Poly (lactic …
This has resulted in an enhanced insight into the process–property relationship for melt-spun PLA yarn and a better understanding of the impact of melt-spinning process parameters on the premature degradation of the polymer at each stage.
Operation parameters of melt spinning of polypropylene
Microporous hollow fiber membranes were prepared via melt spinning of a polypropylene/soybean oil mixture. Many operation parameters of melt spinning process were examined in terms of the structure variation by scanning electron microscopy and bubble point pressure measurement. The initial composition of the melt solution affected …
Bespoke pilot and laboratory melt spinning extrusion lines …
All extrusion lines allow for a high level of bespoke specification to satisfy exacting laboratory conditions. They are ideal for precision melt spinning of exotic polymers and small batch production for medical device applications. FET extrusion systems can be supplied as self-contained units for ease of installation in a laboratory and/or ...
Fabrication of piezoelectric poly (l-lactic acid)/BaTiO3 fibre …
A schematic diagram and photograph of a pilot melt-spinning apparatus are shown in Fig. 1 a–c. The post-drawing process is illustrated schematically in Fig. 1 b.
Melt Spinning of Metals
Melt spinning is one way to make amorphous metals or " metglas ". It always produces thin (around 50 µm) and very long (many m) ribbons (some mm - several cm in width) of the stuff. In essence, the metal …
Schematic of melt spinning system: a the spinning …
Download scientific diagram | Schematic of melt spinning system: a the spinning apparatus, b spinneret A, c spinneret B from publication: Engineering microstructure …
Low cost centrifugal melt spinning for distributed …
Specifically, we demonstrate that a fiber production technique known as centrifugal melt spinning can be implemented with modified, commercially-available cotton candy machines to produce nano- and microscale non-woven fibers.
US7001567B2
An air handler for collecting air discharged from a melt spinning apparatus. The air handler includes an outer housing having walls defining a first interior space. One of the walls has an intake opening for receiving the discharge air. Another wall has an exhaust opening for discharging the air. The intake opening is in fluid communication with the …