Melt Blowing an overview ScienceDirect Topics

Air drag on filaments in the melt blowing process: Journal of

1998/06/04Measurements are reported for air drag on fine filaments in the melt blowing process. The data are fit well by this relation of the Matsui form: C f =0.78 (Re D ) −0.61 . A wide range of conditions were used: filament diameters ranged from 13 to 305 μ, gas velocities ranged from 36 to 300 m/s (18 000 m/min), and fiber Reynolds numbers ranged from 15 to 3000. Get price

Melt Blowing

Melt Blowing - Equipment, Technology, and Polymer Fibrous Materials | L.S. Pinchuk | Springer. Springer Series in Materials Processing. This book introduces the basics of a new class of materials, expected to have wide-ranging applications in future, with important economic consequences. Buy this book. eBook 50,28 €. Get price

Influence of molecular weight, temperature, and extensional

2020/08/20In this work, three linear isotactic polypropylenes with different weight-average molecular weights, M w, and comparable polydispersities were used to produce nonwovens by melt blowing technology at two different temperatures, T.. Get price

Blow molding

Blow molding (or moulding) is a manufacturing process for forming and joining together hollow plastic parts. It is also used for forming glass bottles or other hollow shapes. In general, there are three main types of blow molding: extrusion blow molding, injection blow molding, and injection stretch blow molding. Get price

The Basics of Capillary Rheometry

2020/11/05The Basics of Capillary Rheometry. Rheology studies the deformation and flow of fluids. Traditionally, capillary rheometers have been used to measure the shear viscosity and elasticity of viscous materials at high shear rates. Learn why you need a capillary rheometer and what data you can obtain. December 8, 2020. November 5, 2020 by Milena Riedl. Get price

Overview and Analysis of the Meltblown Process and

Overview and Analysis of the Meltblown Process and Parameters. This paper is a comprehensive review of the meltblown process and parameters. The meltblown process is complex because of the many parameters and interrelationships between those parameters. Due to the competitiveness of the industry, process settings and polymers used are secretive Get price

Strange Martian Spirals Explained

2010/06/16Strange Martian Spirals Explained. June 16, 2010: Almost 40 years ago, NASA's Mariner 9 spacecraft relayed to Earth the first video images of Mars' northern polar ice cap, revealing a strange pattern of spiral swirls that has puzzled scientists ever since. Using new data from the Mars Reconnaissance Orbiter (MRO), researchers have finally Get price

Melt blown nanofibers: Fiber diameter distributions and onset

Abstract. Poly (butylene terephthalate), polypropylene, and polystyrene nanofibers with average diameters less than 500 nm have been produced by a single orifice melt blowing apparatus using commercially viable processing conditions. This result is a major step towards closing the gap between melt blowing technology and electrospinning in terms Get price

About Scopus

Connected. Complete. Scopus uniquely combines a comprehensive, expertly curated abstract and citation database with enriched data and linked scholarly literature across a wide variety of disciplines. Scopus quickly finds relevant and authoritative research, identifies experts and provides access to reliable data, metrics and analytical tools. Get price

Air drag on filaments in the melt blowing process: Journal of

1998/06/04Measurements are reported for air drag on fine filaments in the melt blowing process. The data are fit well by this relation of the Matsui form: C f =0.78 (Re D ) −0.61 . A wide range of conditions were used: filament diameters ranged from 13 to 305 μ, gas velocities ranged from 36 to 300 m/s (18 000 m/min), and fiber Reynolds numbers ranged from 15 to 3000. Get price

Overview and Analysis of the Meltblown Process and

Overview and Analysis of the Meltblown Process and Parameters. This paper is a comprehensive review of the meltblown process and parameters. The meltblown process is complex because of the many parameters and interrelationships between those parameters. Due to the competitiveness of the industry, process settings and polymers used are secretive Get price

Aspergillus flavus

2020/04/28Aspergillus flavus is a mildly pathogenic, saprophytic mold, commonly known to cause diseases in plants such as grains, cereals, trees, and nuts. They cause opportunistic infections in crops. They infect the plants before and after harvesting when they are in storage rooms. Get price

Melt Blowing

Melt Blowing - Equipment, Technology, and Polymer Fibrous Materials | L.S. Pinchuk | Springer. Springer Series in Materials Processing. This book introduces the basics of a new class of materials, expected to have wide-ranging applications in future, with important economic consequences. Buy this book. eBook 50,28 €. Get price

The Basics of Capillary Rheometry

2020/11/05The Basics of Capillary Rheometry. Rheology studies the deformation and flow of fluids. Traditionally, capillary rheometers have been used to measure the shear viscosity and elasticity of viscous materials at high shear rates. Learn why you need a capillary rheometer and what data you can obtain. December 8, 2020. November 5, 2020 by Milena Riedl. Get price

Microcellular Injection Molding analysis (Concept)

2018/11/05A chemical blowing agent is premixed with the polymer in the pellet and reacts to produce the gas. The foaming process of gas in the melt can also be triggered using the core-back technique. In microcellular injection molding, with or without core-back, the pressure can change during the cooling stage, possibly as a result of the change in bubble radius or bubble nucleation density. Get price

Figure 3 from Overview and Analysis of the Meltblown

Figure 3. Schematic of the horizontal (top) and vertical (bottom) melt blowing processes. The top image is from The Nonwoven Handbook (p. 54), by B. M. Lichstein (Ed.), 1988, New York: INDA. The bottom image is from Nippon Kodoshi Corp. - Overview and Analysis of the Meltblown Process and Parameters Get price

The Basics of Capillary Rheometry

2020/11/05The Basics of Capillary Rheometry. Rheology studies the deformation and flow of fluids. Traditionally, capillary rheometers have been used to measure the shear viscosity and elasticity of viscous materials at high shear rates. Learn why you need a capillary rheometer and what data you can obtain. December 8, 2020. November 5, 2020 by Milena Riedl. Get price

Melt blown nanofibers: Fiber diameter distributions and onset

Abstract. Poly (butylene terephthalate), polypropylene, and polystyrene nanofibers with average diameters less than 500 nm have been produced by a single orifice melt blowing apparatus using commercially viable processing conditions. This result is a major step towards closing the gap between melt blowing technology and electrospinning in terms Get price

Influence of molecular weight, temperature, and extensional

2020/08/20In this work, three linear isotactic polypropylenes with different weight-average molecular weights, M w, and comparable polydispersities were used to produce nonwovens by melt blowing technology at two different temperatures, T.. Get price

The rheology of the rheotens test: Journal of Rheology: Vol 42

1998/06/24In a Rheotens test, the tensile force needed for elongation of an extruded filament is measured as a function of the draw ratio. In this way, a whole set of melt spinning conditions is probed during one test run. The analysis of this complicated deformation history is simplified by the existence of Rheotens grandmastercurves. Get price

Melt Process

1.3.3.2.2 Melt blowing An alternative to roll drawing is the melt blowing of the extrudate using a specialized spinneret that has orifices for hot air. The melt blowing spinneret is composed of a V-slot through which hot air is supplied encompassing one to several hundreds of orifices from which the fibers originate ( Fig. 7 ). Get price

Blow molding

Blow molding (or moulding) is a manufacturing process for forming and joining together hollow plastic parts. It is also used for forming glass bottles or other hollow shapes. In general, there are three main types of blow molding: extrusion blow molding, injection blow molding, and injection stretch blow molding. Get price

Henan GoldenwayMelt Blowing an overview ScienceDirect Topics