Abstract
This paper contains a description of tests including the simulation of the injection moulding of thin-walled products. The simulation was designed to analyse the potential impact of processing conditions and cooling conditions on the defects of thin-walled products of the body of the syringe. In order to obtain the correct results, the analysis was based on a simulation comparison with the data obtained after the injection mouldings were produced. Four cases were considered - parameters with reduced injection pressure and absence of pressure push, with a reduced temperature of the injection mould. The test results were analysed in conditions compliant with the recommendations of the production card and with the parameters optimised by computational algorithms of the computer programme. Simulations were carried out using the Simcon CadMould 3D-F programme. The paper describes the construction of a thin-walled body, which is the main segment of a medical instrument - a medical syringe. Also described in the paper are the process of injection of polymer materials and the characteristics of the production of medical syringes. In addition the computer programme software for the simulation of production processes was presented.
Highlights
The injection of fluids into the human body is possible with the use of a dispensing medical instrument colloquially called a syringe
The first considered phenomenon was the flow path of the material, the contribution of inlet canals and problems with filling the nest. These phenomena proceeded without problems, which indicates the lack of influence of the set parameters on these properties
It proves a proper construction of the product structure
Summary
The injection of fluids into the human body is possible with the use of a dispensing medical instrument colloquially called a syringe. The product consists of a thin-walled body in the form of a cylindrical container and a highly resistant profile functioning as a piston [2]. Because both elements can be made of polymer materials, the obtained product will typically satisfy technical requirements and ensuring low manufacturing costs, bioneutrality and sterility. Products of this type are obtained in a cyclic injection process, which is the most widely used method for polymer plastics processing [6, 8]. It is important to carry out preliminary tests and comparative analyses regarding the technological process procedures and the properties of the products in order to minimise all costs and rational selection of process conditions [2, 6, 8]
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