[Al-Zubiedy, A., Kreem, N., 2013. Studying the effect of injection pressure on some mechanical properties for polypropylene material (PP), International journal of multidisciplinary research (IJMR), Jai Hind Education Society, II(6), 09.]Search in Google Scholar
[Bahrololoom, M. E., Younesi M., 2009. Effect of temperature and pressure o pressing on mechanical properties of PP-HA bio-composite, Material and design, 30, 3482-3488.10.1016/j.matdes.2009.03.011]Search in Google Scholar
[Charles A. Harper., 2006. Handbook of plastic technologies”, technology seminars, Inc. Maryland, Edition in chief.10.1002/0471786586]Search in Google Scholar
[Crawford, R.J., 1987. Plastic engineering, The Queen’s University of Belfast, 2nd Edition.]Search in Google Scholar
[Crawford, R.J., 1998. Plastic engineering, The Queen’s University of Belfast, 3rd Edition.]Search in Google Scholar
[Flizikowski, J., Al-Zubiedy, A., 2000. Effect of the injection moulding parameters of toothed wheels and type of polyamide material on the kinematic gear ratio of a belt transmission with these wheels, 14th ICCPE, Praga.]Search in Google Scholar
[H. Li., 1998. Rheological Behavior of Vinyl Ester Resins, chapter three.]Search in Google Scholar
[Hattotuwa, G., Premalal, B., Ismail, H., Baharin, A., 2002. Comparison of the mechanical properties of rice husk powder filled polypropylene composites with talc filled polypropylene composite Polymer Testing, 21, 833-83910.1016/S0142-9418(02)00018-1]Search in Google Scholar
[Jaruga, T., Bociga E., 2007. Structure of polypropylene parts result from multicavity injection mold, Journal of Archives of materials Science and Engineering, 28(7), 429-432.]Search in Google Scholar
[Koszkul, J, Suberlak, O., 2001, Physical chemistry and polymer properties base, Czestochowa University of Technology Edition, (in Polish).]Search in Google Scholar
[Kwiatkowski, D., Nabiałek, J., Postawa, P., 2006. Influence of injection moulding parameters on resistance for cracking on example of PP, Journal of Achievements in Materials and Manufacturing Engineering, 17, 1-2.]Search in Google Scholar
[Manas Canada & Salil K. Roy., 2007. Plastic Technology Handbook, 4th Edition, CRC Press, United states of America.]Search in Google Scholar
[Nairn, J.A., 2001. Fracture mechanics of composites with residual stresses, imperfect interfaces, and traction-loaded cracks. Composites Science and Technology, 61, 2159-2167.10.1016/S0266-3538(01)00110-5]Search in Google Scholar
[Peter Jones, 2008. The Mould Design Guide, Shawbury, Shrewsbury, Shrop-shire, SY4, 4NR, United Kingdom.]Search in Google Scholar
[Rahim, N.A.A., Ariff, Z.M., Ariffin, A. and Jikan, S. S., 2011. A study on the effect of filler loading on flow and viscoelastic behavior of polypropylene/kaolin composites, J. Appl. Polym. Sci., 119, 73-83.10.1002/app.32541]Search in Google Scholar
[Senol, S., Pasa, Y., 2005. Effects of testing parameters on the mechanical properties of polypropylene random copolymer, Polymer Testing, 24 613–619.10.1016/j.polymertesting.2005.03.002]Search in Google Scholar
[Sikora, R., Flizikowski, J., Al-Zubiedy, A., 1993. Effect of injection moulding parameters of toothed wheels and type of polyamide material on the kinematic gear ratio of a belt transmission with these wheels. International Polymer Science and Technology, 20(4).10.14314/polimery.1993.031]Search in Google Scholar
[Strong, A. Brent, 2000. Plastics material and processing, 2nd Edition, Prentice Hall, Upper Saddel River, New Jersy, Columbus Ohio.]Search in Google Scholar