Filament Extrusion
Filament Extrusion - Related Videos
09:39
Live Imaging of Cell Extrusion from the Epidermis of Developing Zebrafish
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Cited by 20 •
2011
Dying cells are extruded from epithelial tissues by concerted contraction of neighboring cells without disrupting barrier function. The optical clarity of developing zebrafish provides an excellent system to visualize extrusion in living epithelia. Here we describe methods to induce and image extrusion in the larval zebrafish epidermis at cellular resolution.
10:22
Demonstration of the Power Law Model Through Extrusion
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2023
Source: Kerry M. Dooley and Michael G. Benton, Department of Chemical Engineering, Louisiana State University, Baton Rouge, LA Polymer melts are often formed into simple shapes or "extrudates", such as cylindrical pellets, flat sheets, or pipe, using an extruder.1 Polyolefins are among the most common extrudable polymers. Extrusion involves transporting and melting solid feed, which is sometimes mixed with non-polymeric materials, and the pressure build-up and transport of the melt or mixture.
08:58
Filamentous Fungi
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Bradley Schmitz Fungi are heterotrophic eukaryotic organisms, and with the exception of yeasts, are aerobic. They are abundant in surface soils and are important for their role in nutrient cycling and the decomposition of organic matter and organic contaminants. White rot fungi (phanerochaete chryosporium) for example, (Figure 1) are known to degrade aromatics. Figure 1. White rot on...
08:10
Hydraulic Extrusion of the Spinal Cord and Isolation of Dorsal Root Ganglia in Rodents
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Cited by 110 •
2017
Here, we present a protocol for hydraulic extrusion of the spinal cord as well as identification and isolation of specific dorsal root ganglia (DRGs) in the same rodent. Compared to standard spinal cord isolation methods, this method is significantly faster and reduces the risk of tissue damage.
02:44
Gliding Motility in Phormidium lacuna Filaments
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2025
Source: Weber, N., et al., Natural Transformation, Protein Expression, and Cryoconservation of the Filamentous Cyanobacterium Phormidium lacuna. J. Vis. Exp. (2022)This video demonstrates the procedure to assess gliding motility in Phormidium lacuna by homogenizing filament cultures to create a uniform suspension, preparing a Petri plate assay setup over a microscope slide, and visualizing filament movement.
FAQs
Temperature determines whether thermoplastic pellets soften or melt sufficiently for conveying and shaping. If heating is not coordinated with screw conveying and die flow, the emerging strand may not maintain a controlled diameter or consistent material quality. Engineering teams therefore treat temperature as part of a linked process system rather than an isolated setting when producing feedstock or specialized filament.
The screw conveys softened or molten material toward the die, while pressure supports its passage through the shaping region. Screw speed and pressure interact with temperature to regulate material flow and the amount delivered over time. Controlling these variables helps produce a continuous strand with stable dimensions, which is essential when the filament will later serve as additive-manufacturing feedstock.
Cooling helps the emerging filament retain the shape established by the die, while winding collects the continuous strand onto a spool for handling and later use. Their coordination affects dimensional consistency and material quality. A controlled post-die sequence is especially important for feedstock because variations in the strand can influence how reliably it is supplied during subsequent processing.
A typical workflow begins by feeding thermoplastic pellets into the system, heating them until they soften or melt, and conveying the material with a screw. The flow then passes through a shaping die, after which the strand is cooled and wound onto a spool. Monitoring temperature, pressure, screw speed, and cooling across these stages supports consistent filament production.
Filament extrusion is used to produce feedstock for fused filament fabrication, where a continuous strand must be supplied in a controlled form. The process is useful when engineers need to convert thermoplastic materials, composite formulations, or reinforced materials into spoolable feedstock. Maintaining diameter and material quality helps the resulting filament meet the demands of downstream additive-manufacturing systems.
Engineering teams can use the process to develop composite or reinforced filaments and to move specialized materials from laboratory formulations toward functional components. This makes extrusion both a production route and a development tool. Control of heating, conveying, die shaping, cooling, and winding provides a way to evaluate whether a formulation can become continuous, dimensionally consistent feedstock.