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Recently, it is one of a major problems in automotive industry that wrinkles on seat interior occur at detaching between seat covering and padding foam. The purpose of this research is the way to improve heat resistance and adhesion using polyurethane reactive (PUR) of thermosetting plastic material. We compose PUR that makes thin film and non-tacky characteristic on padding foam. We find optimum situation (method and amount) for leather and padding foam. Viscosity and melting temperature are adjusted to coat with amount. 25~30g/m2 are suitable on padding foam unlike traditional method to coat leather above 100g/ m2. We also verified performances of PUR lamination compared to others. As result, peel strength is strongest at 15.4N/30mm. Heat resistance is also excellent with various padding foams. Furthermore we advance an additional jig to match leather and padding foam by low tacky characteristic of PUR. This jig can increase productivity in seat manufacturing process.

Recently, it is one of the major problems in the automotive industry that grating is occurred form the place that more than two different materials combined. It is the most severe case that the noise generates between automobile seats and other relative parts (or within seat parts). The purpose of this research verifies and suggests the way to reduce squeak noise between two different parts through the stick-slip test which is regulated by VDA. The two materials - the seat trim cover and the plastic - were selected as major factors. We conducted the test with two different types of seat trim cover (authentic and artificial leather) and plastics (PP and ABS) with 4 levels of embossing size (0 to 3, level ‘0’ is non-embossing. Level 1 is the biggest embossing and it goes through smaller. Level 3 is the smallest embossing size). Test results were reported with 1 to 10 Risk Priority Number (RPN) which was proposed by VDA (Verband der Automotilindustrie).