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Vstřikování plastických hmot
Brunclík, Štěpán
This bachelor thesis is focused on technology of injection moulding of plastics. Thesis is divided into five parts. The first part describes composition of plastic, basic distribution, thermal properties and technology of preparatory processing of plastic. The second part summarizes plastics processing technologies and essential introduction of forming, shaping and additional technologies. The third part is about principle of injection moulding technology and the injection moulding cycle, substantial part of this chapter deals with an impact of injection moulding cycle on a quality of the product. Special injection moulding methods are also mentioned. The next part includes injection moulding machine, injection unit and clamping unit, injection mould. The last part involves economic evaluation of product made by injection moulding.
Měření tvrdosti plastů
Brunclík, Štěpán
This diploma thesis deals with the hardness measurement of plastics. Thesis is divided into four main parts. The first part deals with an overview of existing research findings in the field of hardness measurement of plastics. This part of the work is devoted to the description of principles and procedures, used indenters, sizes of test loads and evaluation of individual test methods. The second part deals with the measurement of the hardness of the test specimens for the selected plastic materials and the comparison with the hardness values declared by the manufacturer. The third part is focused on the suitability of the used methods for measuring the hardness of selected materials. The last part deals with the possible differences in the measured and manufacturer declared values of hardness of plastic materials.

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