EP2963161A1-Spinning nozzle production process

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  • Production Nozzle-Less Electrospinning Nanofiber Technology

    Production Nozzle-Less Electrospinning Nanofiber Technology Stanislav Petrik and Miroslav Maly Elmarco s.r.o. V Horkach 76/18, CZ-46007 Liberec, Czech Republic ABSTRACT The theoretical background and technical capabilities of the free liquid surface (nozzle-less) electrospinnig process is described. The process is the basis of both laboratory and

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  • (PDF) Nozzle design in a fiber spinning process for a ...

    Yang, Z., et al.: Nozzle Design in a Fiber Spinning Process for a Maximal … 1530 THERMAL SCIENCE, Year 2013, Vol. 17, No. 5, pp. 1529-1532 where k is the constant, and R – the inner radius of ...

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  • (PDF) Design and Preparation of Aluminium Nozzle Using ...

    convergent-diverge nt nozzle made up of C103 alloy (Nb-89 %, Hf-10% and Ti -1%) by metal. spinning process. C103 is the actual material used to make a rocket nozzle, which is refracto ry. material ...

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  • Electrospinning: an advanced nanofiber production ...

    Electrospinning process, fiber morphology, fibrous structure, and fiber production rate are governed by a number of parameters, e.g. applied voltage, flow rate, nozzle diameter, collecting distance, solution properties (e.g. polymer molecular weight, concentration, electrical conductivity, surface tension, solvent properties), and ambient ...

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  • Spinning solution flow model in the nozzle and ...

    During the high speed centrifugal spinning, the spinning parameters such as motor speed, nozzle length and diameter, solution concentration will affect the morphological distribution of nanofibers directly [31,32].The influence of direction and angle of nozzle on the spinning jet path and nanofiber morphology were studied by Padron [].Initial fiber trajectories with varying orifice exit angles ...

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  • Melt-spinning|Manufacturing Spinneret for Textile and Fine ...

    Melt spinning is a typical spinning of synthetic fiber such as Polyester, Nylon, Polypropylene. Melted polymer is discharged from the spinneret. The discharged fiber is wound after quenching process and drawing process.Melt spinning is used for various polymers and applications. Round hole SEM picture. Enlarged picture. Y-shaped hole SEM picture.

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  • Nanofiber Assembly by Rotary Jet-Spinning

    Schematic of rotary jet-spinning process. (a) Rotary jet-spinning consisted of a perforated reservoir (internal volume of 700 µ L and external diameter of 12.5 mm) with two side wall orifices (orifice diameter of 340 µ m and length to diameter ratio of 9) which rotates about

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  • Air-Jet Spinning - an overview

    R.A. Angelova, in Advances in Yarn Spinning Technology, 2010 12.8 Advantages and limitations of air-jet spinning. The main advantages of air-jet spinning can be found in two main directions: efficiency and flexibility. The efficiency of the method is attributed to the high production speed of the spinning machines: up to 500 m/min for MVS. Air-jet yarns are spun about two to three times faster ...

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  • Polymer Nanofibers via Nozzle-Free Centrifugal Spinning

    is the angular speed, R) 0.0325 m is the radius of the chuck, and r is the distance of the polymer solution from the center of the chuck in cylindrical coordinates. The characteristic length scale of the instability is then given by L) (hγ/(Fω2R))1/3, where ∂/∂r ∼ L-1.Using the parameters ω) 500 s-1, γ) 0.01 kg/s2, F)103 kg/m3, and h) 0.1 µm, one obtains L) 4 µm for the wavelength ...

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  • Fluid-fiber-interactions in rotational spinning process of ...

    The optimal design of rotational production processes for glass wool manufacturing poses severe computational challenges to mathematicians, natural scientists and engineers. In this paper we focus exclusively on the spinning regime where thousands of viscous thermal glass jets are formed by fast air streams. Homogeneity and slenderness of the spun fibers are the quality features of the final ...

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  • Electrospinning: an advanced nanofiber production ...

    Electrospinning process, fiber morphology, fibrous structure, and fiber production rate are governed by a number of parameters, e.g. applied voltage, flow rate, nozzle diameter, collecting distance, solution properties (e.g. polymer molecular weight, concentration, electrical conductivity, surface tension, solvent properties), and ambient ...

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  • [PDF] Development of Spinning Process for Manufacturing ...

    ABSTRACT Spinning process to inner wall has been applied for reducing the weight of regenerative cooling chamber of liquid propellent rocket engine. The fractures of th e blanks of cylinder part and nozzle throat part have been observed during spinning processes. In or der to overcome the problem, the mandrel and the blank shape have been modified, and the inner w all was successfully ...

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  • A comparative study of jet formation in nozzle‐ and nozzle ...

    In this study, the jet formation process and spinning parameters on jet path are explored and compared in nozzle- and nozzle-less centrifugal spinning systems. For nozzle-less centrifugal spinning, fingers are formed at the front of thin liquid film due to the theory of Rayleigh–Taylor instability.

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  • Polymer Nanofibers via Nozzle-Free Centrifugal Spinning

    is the angular speed, R) 0.0325 m is the radius of the chuck, and r is the distance of the polymer solution from the center of the chuck in cylindrical coordinates. The characteristic length scale of the instability is then given by L) (hγ/(Fω2R))1/3, where ∂/∂r ∼ L-1.Using the parameters ω) 500 s-1, γ) 0.01 kg/s2, F)103 kg/m3, and h) 0.1 µm, one obtains L) 4 µm for the wavelength ...

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  • WHAT IS METAL SPINNING? - Manufacturing Spun Metal Parts ...

    All these features make spinning an economical and highly flexible process whether it is for high volume or small batch production. Our expertise in the art of metal spinning allows us to take our customer requirements and develop from conception to completion allowing the company to operate successfully across a wide range of industry sectors ...

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  • Preparation of Solution Blown Polyamic Acid Nanofibers and ...

    in a volatile solvent, and a high-velocity gas source [14]. For spinning apparatus, a specialized nozzle that consists of an inner nozzle, through which a polymer solution is pumped and a concentric outer nozzle that supplies pressurized gas is of great necessity [15]. During the SBS process, the solution

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  • Nozzle tips for hot runner nozzles

    Glass fiber-reinforced plastics are exceptionally strong during processing but also highly abrasive. During the production process they can place considerable strain on hot runner systems - and the hot runner nozzles …

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  • Process Lines for Crude Palm Oil Production

    Convential Process with Vertical Clarifier and GEA topd 3-Phase Decanter The use of the gea topd 3-phase decanter is an alternative to the nozzle-type separators. Instead of a nozzle-type separator, a topd 3-phase decanter can be used down-stream of the vertical clarifier.

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  • ASME Air Flow Nozzles On Hy-Grade Metal Products Corp.

    ASME Air Flow Nozzles. Hy-Grade Metal Products has been a manufacturer of ASME Air Flow Nozzles since the …

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  • (PDF) Solution Blow Spinning: A New Method to Produce ...

    Thus, the electrospinning [13] and solution Blow Spinning [21] techniques are technologically efficient for the production …

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  • [PDF] Development of Spinning Process for Manufacturing ...

    ABSTRACT Spinning process to inner wall has been applied for reducing the weight of regenerative cooling chamber of liquid propellent rocket engine. The fractures of th e blanks of cylinder part and nozzle throat part have been observed during spinning processes. In or der to overcome the problem, the mandrel and the blank shape have been modified, and the inner w all was successfully ...

    Get Price
  • WHAT IS METAL SPINNING? - Manufacturing Spun Metal Parts ...

    All these features make spinning an economical and highly flexible process whether it is for high volume or small batch production. Our expertise in the art of metal spinning allows us to take our customer requirements and develop from conception to completion allowing the company to operate successfully across a wide range of industry sectors ...

    Get Price
  • Nozzle tips for hot runner nozzles

    Glass fiber-reinforced plastics are exceptionally strong during processing but also highly abrasive. During the production process they can place considerable strain on hot runner systems - and the hot runner nozzles …

    Get Price
  • Stable multi-jet electrospinning with high throughput ...

    A modified bead structure nozzle for the electrospinning process was developed to improve the production …

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  • New Electrospinning Nozzle to Reduce Jet Instability and ...

    A new nozzle system for the efficient production of multi-layered nanofibers through electrospinning is reported. Developed a decade ago, the commonly used coaxial nozzle system consisting of two ...

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  • A new prototype melt-electrospinning device for the ...

    spinning method, which also uses an airstream to draw the fiber from the nozzle [64]. However, the shape of the longitudinal Laval nozzle accelerates the air, making the process more efficient than conventional melt-blowing. Fig. 4 Basic setup of the fiber-drawing production method

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  • (PDF) Solution Blow Spinning: A New Method to Produce ...

    Thus, the electrospinning [13] and solution Blow Spinning [21] techniques are technologically efficient for the production …

    Get Price
  • Process Lines for Crude Palm Oil Production

    Convential Process with Vertical Clarifier and GEA topd 3-Phase Decanter The use of the gea topd 3-phase decanter is an alternative to the nozzle-type separators. Instead of a nozzle-type separator, a topd 3-phase decanter can be used down-stream of the vertical clarifier.

    Get Price
  • Yarn Spinning - Air Jet Spinning - Textile School

    Air jet spinning has offered yarn manufacturers the opportunity to produce yarn at relatively high production rate. Unlike other spinning methods in which productivity is limited by the amount of twist in the yarn, Air Jet yarns can be produced at the same production rate regardless of yarn counts. Murata Vortex Spinners are one such leading Air Jet spinning …

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  • Preparation of Polyacrylonitrile Nanofibers by Solution ...

    the melt-blowing process can operate at high production rates. Commercial melt-blowing processes often operate at maximum rates of 6,000 m/min of gas flow and produce fiber with diameters in the range of 0.5 mm to 5 mm [20]. In the dry spinning process, another important fiber-spinning method, the gas is blown into a

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  • Electrospinning: an advanced nanofiber production ...

    Electrospinning process, fiber morphology, fibrous structure, and fiber production rate are governed by a number of parameters, e.g. applied voltage, flow rate, nozzle diameter, collecting distance, solution properties (e.g. polymer molecular weight, concentration, electrical conductivity, surface tension, solvent properties), and ambient ...

    Get Price
  • New Electrospinning Nozzle to Reduce Jet Instability and ...

    A new nozzle system for the efficient production of multi-layered nanofibers through electrospinning is reported. Developed a decade ago, the commonly used coaxial nozzle system consisting of two ...

    Get Price
  • Molybdenum Spinning Nozzle

    We provide molybdenum spinning nozzle per drawings. Glass wool and glass fiber are manufactured at temperatures of over 1600 °C (2912 °F). During the production process, the liquid melt passes through outflow spinning nozzles made of molybdenum or tungsten. The melt is then either blown or spun to create the finished product.

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  • Stable multi-jet electrospinning with high throughput ...

    A modified bead structure nozzle for the electrospinning process was developed to improve the production …

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  • Solution blow spinning of polymer/nanocomposite micro ...

    A variety of techniques can be used for the fabrication of continuous (or endless) microfibers such as melt spinning, wet spinning, coaxial spinning, electrospinning and blow spinning 2,3,4,5,6 ...

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  • Simulation of Airflow Motion in Jet Nozzle with Different ...

    Jet nozzle with tangentially injected airflow has been applying into spinning technology due to the tangential force produced by swirling airflow. In order to understand the airflow motion trajectory in jet nozzle, modify the nozzle structure and dimension, FLUENT software program is used. Some parameters which are closely related the airflow motion profiles are studied, such as the diameter ...

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  • NANOFIBER MEMBRANE FABRICATION USING SOLUTION BLOW ...

    One of the most competitive technologies for nanofiber membrane synthesis is solution blow spinning (SBS). Aside from its smooth operation and high production …

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  • Pulping

    Pulping is the first step in the papermaking process, with the purpose of producing a clean fiber suspension that can be pumped forward in the process. Fibers from virgin pulp, recovered paper or paper machine broke are mixed, i.e., pulped, with water to form a suspension inside the pulper. The optimal pulping technology is selected depending ...

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  • Witmans Industries Private Limited - Manufacturer of ...

    Since our commencement in the year 1999, we, Witmans Industries Pvt. Ltd., are an ISO 9001: 2008 certified business organization engaged in manufacturing, supplying, and exporting a comprehensive range of textile lubricants, spin finishes industrial oil, industrial paints and coatings.In addition to this, we offer a range of Metal working fluids,Rubber process …

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  • Textile spinning process pdf - static.squarespace.com

    Textile spinning process pdf Spinning is the first steps of textile product processing. The process of making yarns from the textile fiber is called spinning. There are various types of spinning methods for producing various types of yarn. If we notice, we will see that the cotton fibers are converted into carded yarn, combed yarn and rotor yarn.

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  • Spinning With An Air Jet

    an airflow in a spinning nozzle, which creates a quite different yarn structure. Yarn produced by the J 20 is marketed under the ComforJet® brand. Since ITMA 2011, Rieter has begun marketing the J 20 worldwide. The company claims that “the J 20 is a production …

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  • Damen Develops Nozzle Spinning Method - MarineLink

    The new Nozzle Spinning Machine can deliver nozzles up to 4.5 m at short notice. Based in Hardinxveld in the Netherlands and part of the Damen Shipyards Group, DMC has invested in new spinning ...

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  • Second nozzle spinning machine is rolling them out in ...

    The spinning machine starts with a tube that has been plate rolled and welded – hence the one, single weld only - on the spot in DMC’s manufacturing halls. A calm and cautious process, it still far outspeeds the traditional patchwork-style welding of the nozzle inner ring from many steel parts, especially when the rings are big.

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  • Single weld method improves Damen’s nozzle production

    A further advantage claimed for the process is that the nozzle inner surface is much smoother. Steef Staal, DMC managing director, says: “The new spinning machinery, developed in the past two years, makes the production of nozzles much easier and gives an improved end product, because there is only a single weld seam

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  • The Use of a Three-Fluid Atomising Nozzle in the ...

    two-fluid nozzle for the production of a dry powder combination product: Firstly, it is possible to dissolve two APIs in two di erent solvents prior to spray drying, overcoming problems associated with di ering API solubilities; and, secondly, it allows the use of high concentration solutions with a

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  • New manufacturing milestone: 30,000 additive fuel nozzles ...

    This week, the 30,000th additively-manufactured fuel nozzle tip “grew” on a 3D printer at GE Aviation’s plant in Auburn, Ala., where the jet engine maker opened the industry’s first site for mass production using the additive manufacturing process. Employees at GE Aviation in Auburn began producing the nozzle tip in 2015.

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  • Simulation of Airflow Motion in Jet Nozzle with Different ...

    Jet nozzle with tangentially injected airflow has been applying into spinning technology due to the tangential force produced by swirling airflow. In order to understand the airflow motion trajectory in jet nozzle, modify the nozzle structure and dimension, FLUENT software program is used. Some parameters which are closely related the airflow motion profiles are studied, such as the diameter ...

    Get Price
  • Bicomponent nanofibers from core–shell nozzle in gas jet ...

    Such fiber structures have strong potential in drug delivery and wound dressing applications. Solutions of PVP and PVAc in respective single solvents metered through a core–shell nozzle assembly meet at the exit of the nozzle and a liquid jet is initiated upon contact with a turbulent gas jet. The gas jet stretches the liquid jet into nanofibers.

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  • NANOFIBER MEMBRANE FABRICATION USING SOLUTION BLOW ...

    One of the most competitive technologies for nanofiber membrane synthesis is solution blow spinning (SBS). Aside from its smooth operation and high production …

    Get Price
  • Products

    Lechler supports its customers with a wide range of over 45,000 nozzles, spray systems and accessories. In addition to instantly available precision nozzles and suitable accessories, Lechler also offers industry specific and customer specific solutions (engineered solutions) to meet your individual requirements.

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  • Effective method for high‐throughput manufacturing of ...

    1 Introduction. Centrifugal spinning [, ] is a simple and versatile method for generating ultrathin fibres, owing to the fact that no high voltage is required, the high production rate [, ] and the wide variety of suitable materials [, ].Centrifugal spinning has been recognised as a promising method for the development of micro- and nanoscale functional devices [, ].

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  • HFM System

    Manufacturing System. HF Membrane spins using the hollow nozzle and double hollow nozzle. The HF membrane spinning system makes it very convenient and efficient for running numerous testing as it applies the disposable raw material bag. The winding wheel is detachable, thus it supports continuous winding process (such as RO membrane or GS ...

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  • NASA - Spin Forming

    The spin forming process is considered near 'net shape' which means the initial production of an item is very close to the final shape. Wagner thinks this manufacturing …

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  • Spinnerets production - Elmer GmbH

    The spinnerets differ, depending on the process which is used to extract the viscose. The wet spinning method can be classified into the classic and the NMO method. The NMO production method requires special spinnerets which consist of more than 120.000 holes. Spinnerets are a central component of the viscose spinning process. Spinnerets ...

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  • Nanospider™ industrial electrospinning technology

    Nanospider™ electrospinning technology is a patented, needle-free high voltage, free liquid surface electrospinning process…

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  • JetValve for Heart Regeneration - Harvard University

    In rotary jet spinning technology, a rotating nozzle extrudes a solution of extracellular matrix (ECM) into nanofibers that wrap themselves around heart valve-shaped mandrels. By using a series of mandrels with different sizes, the manufacturing process …

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  • The Japan's first chemical fiber spinnerets manufacturer ...

    The company was established in 1928 and achieved the first domestic production of spinnerets for manufacturing rayon. Since then, it has been producing spinnerets for chemical fibers to supply to the leading fibers & textiles manufacturers in the world with its advanced technology and has been accumulating knowledge, experience and know-how.

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  • MELT BLOWN PRODUCTION EQUIPMENT

    Nippon nozzle is capable to build high performance Melt blown equipment, such as launching a new production line, designing to increase production …

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  • Manufacturing Process

    Manufacturing Process. Unitika uses two methods - spunbond method and spunlace (hydroentangling) method - to produce nonwoven fabric. ... Filaments spun by melting resin chips are spread on a net directly from a spinning nozzle …

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  • MEMS Fabrication I : Process Flows and Bulk Micromachining

    Process Flows and Bulk Micromachining Picture credit: Alien Technology ... • Spin-casting photoresist • Polymer resin, sensitizer, carrier solvent • Positive and negative photoresist ... Electrospray Nozzle …

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