Results 231 to 240 of about 1,925,273 (264)

Biopolymers Processing Experimentation by Micro Injection Moulding

AIP Conference Proceedings, 2011
Most of Micro‐Mechanical product new applications are disposable polymer parts. The increasing of environmental concerns and the unsustainability of petrochemical resources are going to promote the employment of biopolymers in the near future. A new approach to experimentation in Micro‐Injection Moulding (MIM) is presented in this paper, where a ...
Juan J. Marquez, Jesus Rueda, Francisco Chinesta, Yvan Chastel, Mohamed El Mansori   +4 more
openaire   +1 more source

Thermal Contact Behaviour in Micro-Injection Moulding

ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 2008
Micro-injection moulding is one of the most efficient technologies for large-scale manufacturing of thermoplastic polymer micro parts. Growing demands for high precision require new concepts for moulding machines and micro moulds on the one hand and a better understanding of the process characteristics on the other hand.
Tham Nguyen-Chung, Cindy Lo¨ser, Ines Ku¨hnert, Ga´bor Ju¨ttner   +3 more
openaire   +1 more source

Cavity Pressure Behaviour in Micro Injection Moulding

Proceedings of the 7th International Conference on Multi-Material Micro Manufacture, 2010
Process monitoring of micro injection moulding (µIM) is of crucial importance to analyse the effect of different parameter settings on the process and to assess its quality. Quality factors related to cavity pressure can provide useful information directly connected with the dynamics of the process as well as with the filling of the cavity by the ...
Griffiths C. A., Dimov S. S., Scholz S, Hirshy H, Tosello G, Hansen H. N., Williams E   +6 more
openaire   +1 more source

Mechanical properties of micro-injection moulded components

Macromolecular Symposia, 2002
Micro-injection moulded specimens and components were investigated using instrumented indentation testing and tensile testing. Conventional nano indentation testing, from which hardness and modulus can be obtained, is useful for the characterization of thermoplastics and filled thermoplastics. The difficulties of indentation measurements on LCPs can be
Thomas Koch, Sabine Seidler
openaire   +1 more source

Selected Problems of Micro Injection Moulding of Microelements

2007
Tests results of filling micro-channels by synthetic polymers were displayed. Special test mould was applied, having ability of being heated or cooled. The material tested was polyethylene. Test results have been shown on Fig. 3 to 5. Filling tests were carried out depending on injected material temperature, injection pressure and mould temperature ...
D. Biało, A. Skalski, L. Paszkowski
openaire   +1 more source

A New Approach For The Validation Of Filling Simulations In Micro Injection Moulding

AIP Conference Proceedings, 2007
In manufacturing polymer micro products, numerical simulations are used with the same purposes as in conventional injection moulding, mainly the optimization of micro components design, the optimization of process parameters and the decrease of production costs. Dedicated simulations softwares fail to correctly describe the melt flow in microstructures,
GAVA A, TOSELLO G, HANSEN H. N, SALVADOR M, LUCCHETTA, GIOVANNI   +4 more
openaire   +1 more source

A Novel Setup for Cavity Pressure and Temperature Measurements in Micro-Injection Moulding

Proceedings of the 4M/ICOMM2015 Conference, 2015
In injection moulding, continuous monitoring of temperature and pressure parameters in the mould cavity is very important for process control and optimization. In the micro injection moulding process, however, it is more difficult to measure the cavity pressure and temperature due to the extremely small sizes involved.
Gianluca Trotta, Vito Basile, Irene Fassi   +2 more
openaire   +3 more sources

Effect of Surface Roughness in Micro Injection Moulding Process of Thin Cavities

Volume 4: 21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems, 2016
Due to its ability to produce low-cost and high repeatable micro polymeric parts, injection moulding of micro components is emerging as one of the most promising enabling technologies for the manufacturing of polymeric micro-parts in in many different fields, from IT to Healthcare, to Medicine.
Bellantone V, Modica F, Surace R, Fassi I   +3 more
openaire   +2 more sources

Polymeric Micro-Filter Fabrication Using a Micro Injection Moulding Process

Volume 4: 20th Design for Manufacturing and the Life Cycle Conference; 9th International Conference on Micro- and Nanosystems, 2015
This paper reports on fabrication and characterization of a micro-filter for hearing aid, dialysis media and inhaler. The micro-feature specifications consist in a diameter of 2.3 mm, a thickness of 0.2 mm and it is composed by a mesh with grid of 80 μm and ribs with width of 70 μm.
Rossella Surace, Vincenzo Bellantone, Irene Fassi   +2 more
openaire   +3 more sources

Process Parameter Effects on Dimensional Accuracy of Micro-Injection Moulded Part

Journal of Micro and Nano-Manufacturing, 2013
Micro-injection moulding is becoming increasingly important among the available processes for production of micro-electromechanical systems (MEMS) and microsystem technologies (MSTs), and higher number of polymer products is being manufactured by this process.
M. R. Mani, R. Surace, P. Ferreira, J. Segal, I. Fassi, S. Ratchev   +5 more
openaire   +1 more source