Interactive software package for the design and analysis of extrusion profile dies

Sebastian, Donald H.; Rakos, Ronald

doi:10.1002/adv.1985.060050406

Cited by 9 publications

(3 citation statements)

References 3 publications

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“…2,3 However, the plastication process is still actively researched today, particularly with regard to mixing and screw efficiency. 4,5 Work on designing profile extrusion dies is complicated by the effect known as die swell. In capillary flow, elastic effects cause the diameter of the extrudate to be greater than the capillary diameter.…”

Section: Optimisation Of Design Processesmentioning

confidence: 99%

Design and manufacture of discrete components

Thomas¹,

Speight²,

Kennedy³

et al. 2005

Plastics, Rubber and Composites

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The use of computers in product design and manufacturing today is accepted as normal working practice, the benefits are very clear, as the present study will show, but often the solutions available have a high degree of fragmentation, and are often described as being 'vertically fragmented'. These systems are often supplied from many sources, with poor infrastructure for sharing information which contributes to the fragmentation. The present study presents a vision that provides solutions to design, process and production optimisation, and also provides a high level of integration that has often been the missing link between existing systems. This integration takes the form of sharing technology and information, thus enabling the decision process to be carried out in a well informed manner. Product conceptualisation, product design, component design and component manufacture are key stages in product development that should be considered as part of a product lifecycle management (PLM) plan. During these stages, it is important to consider the whole product life cycle: (i) customers, who will have to spend the most time with a product; (ii) manufacturing, people who have to fabricate and assemble the product, so 'design for assembly' is very important; (iii) maintenance, these people will be involved in preventive maintenance or repair work, either at the point of sales or on location, so ensure their processes and tasks are as easy as possible, avoid any obstacles; and (iv) recycle-ability, this is an important consideration; how a product can be re-used needs to evaluated in the design process, to meet the increasing demands of legislation. Competitive pressures, rising labour and material costs continuously force manufacturers to reduce time to market, decrease part cost, maximise capacity utilisation and production efficiencies while maintaining and improving product quality. These are just the facts of life in today's economy. The plastics industry faces the same constraints that impact all manufacturers. What differentiates companies now is how they respond to these constraints. The manufacturing process involves more than the immediate factory; the full supply chain management and resource management have to be considered. Automation and optimisation is the way forward. The present study will show that the manufacture of discrete components should be considered as a function of product development and not in isolation; there are many factors and people to consider in the design process. The technologies outlined in the present study are linked by a common vision and philosophy that is to facilitate the ability to manufacture products that are friendly to use, meet the economic factors, and are made by manufacturing processes that are easy to control. This is an approach towards product development that promotes and stimulates success.

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Section: Optimisation Of Design Processesmentioning

confidence: 99%

Design and manufacture of discrete components

Thomas¹,

Speight²,

Kennedy³

et al. 2005

Plastics, Rubber and Composites

View full text Add to dashboard Cite

show abstract

“…As a result of the literature and the review papers [2,45], there are many computer systems used for simulating the extrusion, such as the EXTRUD system [69], the SPR system (Scientific Process & Research) [70], the NEXTRUCAD system [71], the REX system (Rechnergeschützte Extruderauslegung) [72,73], the PASS system (Polymer Analyses and Simulation Software) [74], the SSEM system (Single-Screw Extrusion Model) [75], and the models proposed by Fukase et al [76], Zavadsky et al [77], Vincelette et al [78], and Amellal et al [79]. But the only available system for injection forming is the PSI system (Paderborner Spritzgiesssimulation) [80].…”

Section: Introductionmentioning

confidence: 99%

A Global Approach to Modeling Injection Molding

Narowski,

Wilczyński

2024

Polymers

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A problem of modeling plastic injection forming (molding) is presented, including both the plasticizing system of the injection-forming machine and the mold. When modeling the plastic flow in the mold, the input quantities are essentially unknown, e.g., the plastic melt temperature. Thus, a comprehensive (global) model of the injection-forming process is needed for the flow in the plasticizing system and in the mold. The process output quantities from the plasticizing system will be the input quantities for the mold. When modeling the plastic flow in the injection-forming machine, a comprehensive approach should be applied to consider the solid material conveying, material plasticizing, and the material melt flow. The model of material plasticizing is a basis for building such global models. In this research, the effect of the flow (including plasticizing) in the injection-forming machine on the flow in the mold is studied by simulation (using Moldex3D 2023R3OR 64-bit software) and experimentation. These studies are carried out for the injection forming of selected material using a specialized spiral mold. Simulations performed with the use of Moldex3D software for the plasticizing system significantly improved the accuracy of the simulation of the flow in the mold. However, the best results were obtained using experimental data (plastic melt temperature) as input quantities for mold filling simulations. The novel concepts of injection-forming process modeling based on our previous experimentations are also discussed.

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“…[1][2][3][4][5]. Thus, it is possible to assess the performance of dies from the rheological point of view, making it easier to design new tools.…”

Section: Introductionmentioning

confidence: 99%

Designing Extrusion Dies for Thermoplastics

Covas

Carneiro

Brito

1991

Journal of Elastomers & Plastics

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An extrusion die must be able to produce, at the highest possible flow rate, a specific cross-section of an homogeneous melt that, after cooling, is well within the dimensional tolerances defined. The correct design of such a tool will have to consider the relevant physical and rheological phenomena that take place during the flow of the polymer melt through the die and upon stretching and cooling. This paper presents a possible strategy for die design that considers the most important physical and rheological phenomena involved in the process without too complex or time consuming computation techniques. Since an appropriate die design requires extensive data on the polymer properties, useful procedures for characterizing the rheological behaviour of polymer melts are also discussed.

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Interactive software package for the design and analysis of extrusion profile dies

Cited by 9 publications

References 3 publications

Design and manufacture of discrete components

Design and manufacture of discrete components

A Global Approach to Modeling Injection Molding

Designing Extrusion Dies for Thermoplastics

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