With the availability of novel thermoplastic vulcanizates (TPVs) that show less surface defects such as halos, gloss variation, gate blemishes, and flow lines, it is possible to injection mold uniform appearance soft-touch automotive interior parts such as coin trays, mats, cup holders, etc. These materials have excellent low fogging characteristics along with ease of fabricability. Proper processing, coupled with good part and tool design is critical to achieve defect free surface appearance using these materials. In this paper, we have described the material properties of such novel TPVs, their recommended processing parameters and guidelines to achieve a defect free part.
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