The Body Mount Seals are required to seal between body and door panels. The sealing performance is improved to make a loop specification by joint molding. Generally, the molded parts are made from EPDM. They need curing time and trimming of flash. Furthermore, the product with decorated parts, which adjust an interior color made from thermoplastic, need complex device to prevent a discoloration on decorated surface at curing molding process. Thermoplastic polyolefine elastomer (TPO) has expanded an application of material to automotive parts as the substitution for EPDM. We have developed a new jointing molding method by using TPO. The new Body Mount Seal is molded only at a tight corner with two TPO materials at once. The molded sealing part where is required flexibility is made by a soft TPO. And the molded decorating trim part is made by a hard colored TPO. As the result of this innovation method, a sealing performance, a maintaining performance and a decorative performance are improved. And this molding method accomplishes an advanced product design, which can be applied to both panel door and frame door.
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