Results 231 to 240 of about 203,788 (272)

POSTDIE EXTRUSION OF PLASTIC PIPE

Polymer-Plastics Technology and Engineering, 2000
In continuous plastic pipe extrusion, melt emerges from an annular die and is then freely drawn down into a sizing sleeve. Here, we investigate this extensional flow with and without internally applied air pressure. For the case without internal air pressure, an analytic solution is derived. For the case with internal air pressure, a numerical solution
AARON J. HADE, A. JEFFREY GIACOMIN, JOHN C. SLATTERY, DAVID N. GITHUKU   +3 more
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Plastic pipe solidification in extrusion

Journal of Polymer Engineering, 2018
Abstract In plastic pipe extrusion, hot molten extrudate emerges from an annular. This highly viscous liquid is then cooled and solidified, called quenching , in a quench tank. In this paper, we focus on the external cooling system.
Pongthep Poungthong, Chanyut Kolitawong, Chaimongkol Saengow, Alan Jeffrey Giacomin   +3 more
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Extrusion of Rubber and Plastics

1989
The purposes of this chapter are multiple: to describe the geometry and operation of extrusion equipment, to analyze its operation through mathematical models, to organize and review the extrusion literature, and to provide useful information for the operation and design of extrusion lines.
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A computer model of plasticating extrusion

Rheologica Acta, 1982
The development of mathematical models for single screw plasticating extruders has been covered extensively in the literature [1 – 7]. By far, the majority of these studies have concentrated on melt extruders or the melt conveying section of plasticating extruders.
E. E. Agur, J. Vlachopoulos
openaire   +1 more source

Operations Management of Plastics Extrusion

1998
If the performance of a piece of equipment or department is below the performance targets set then something must be done. However, if the attempts to remedy the situation are unsuccessful, because of something lacking in the management’s approach, then a state of equilibrium is often reached where poor performance is the accepted norm.
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Plasticating Single-Screw Extrusion

2006
There are two types of extruder: (1) single-screw extruders and (2) twin-screw extruders. The single-screw extruder is one of the most important pieces of equipment in the processing of thermoplastic polymers. Accordingly, during the past three decades, many attempts have been made to analyze the performance of single-screw extruders using different ...
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Ram extrusion of reactive plastics

Russian Engineering Research, 2013
A system is proposed for the processing of highly filled thermosetting material. That system permits orientation of the fibrous filler over the length and cross section of the part. A wood-based thermosetting composite for the production of high-strength shaped components is also considered.
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Pump‐assisted plasticating extrusion*

Journal of Polymer Science: Polymer Symposia, 1985
AbstractWithin the past several years considerable interest has developed in the practice of retrofitting of plasticating extruders with gear pumps. The primary motivation for this is to reduce surges and fluctuations in the extrusion rate, thereby improving product quality and reducing waste.
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Casting and extrusion processes to produce bio-based plastics using cassava starch modified by the dry heat treatment (DHT)

Innovative Food Science and Emerging Technologies, 2022
Pedro E D Augusto, Carmen Cecília Tadini   +1 more
exaly  

plastic extrusion process

2021
openaire   +1 more source