| DEVELOPMENT OF CRASH PAD USING OVERMOLDING
TECHNOLOGY |
| Dong Kyou Park 1, Byung Seok Kong 2, Byung Chul Kim 3 |
1Department of Electromechanical Convergence Engineering, Korea University of Technology and Education
2Interior Research Lab, Hyundai Motor Company
3School of Mechanical Engineering, Korea University of Technology and Education |
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| ABSTRACT |
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Herein, the hard panel-crash pad integrally overmolded with soft skin thermoplastic polyoefins (TPO) for soft
feeling and cost reduction was developed. Furthermore, a cost-effective PAB door system having an in-mold tear seam was
produced that avoided competitors’ patents simultaneously. The development procedure of this overmolding technology was
introduced as follows. The first one is the selection of overmolding material. The second one is the design optimization. The
third one is the solving of the tool challenges. The reduction in the number of process by integrally molding with soft material
helped accomplish a soft feeling on the crash pad and cost reduction simultaneously. The airbag deployment as well as head
impact performance and heat-aging tests were conducted and applied to five patents for optimizing the mold’s structure and
injection conditions. |
| Key Words:
Overmolding, PAB, Airbag deployment, Head impact performance, TPO |
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Corresponding Author.
Byung Chul Kim , Email. 
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