In master's thesis we presented a problem of outgassing of injection molded poylmer parts as well as venting of molds for injection molding. At first, we explaind basic knowledge of injection molding, as well as parts of molding tools and types of venting systems. We compared conventional venting of mold with vacuum assisted mold venting provieded by external vacuum pump. In next step we compared parts surface by measuring roughness and geometry of samples. We found that by vacuum venting, we eliminate outgassing of surface, by which value of roughness is lower and look of measured surface is more desirable. At the same time other dimensions of samples remain unchanged.
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