[Problem] To provide an extrusion molded body and a weather strip which contribute to weight reduction and which are easy to obtain desired rigidity and linear expansion coefficients. [Solution] An extrusion-molded body is obtained by extrusion-molding a kneaded product of a foaming agent and an inorganic filler in which plate-shaped particles are blended in a polypropylene resin composition, and foaming the foaming agent by the extrusion molding. The weight ratio of the polypropylene resin composition to the inorganic filler in the kneaded product, namely polypropylene resin composition/inorganic filler, is in the range of 50/50 to 95/5. The weather strip (W) is configured from an attachment base (1) which is formed from the extrusion-molded body and which is freely fitted to the body of the automobile, and elastic parts (2, 3) which are formed from a thermoplastic elastomer-molded body obtained by extrusion-molding a thermoplastic elastomer composition and which are freely elastically brought into contact with door glass (G) provided on a door panel.
[课题]本发明提供一种挤出成型体、挡风条,其有助于轻量化,且容易得到期望的刚性和线膨胀系数。[解决手段]将在聚丙烯树脂组合物中配合有板状粒子的无机填充剂和发泡剂的混炼物挤出成型,通过该挤出成型使所述发泡剂发泡而得到挤出成型体。所述混炼物中的所述聚丙烯树脂组合物与所述无机填充剂的重量比,即聚丙烯树脂组合物/无机填充剂在50/50~95/5的范围内。挡风条(W)由安装基部(1)和弹性部(2)、(3)构成,所述安装基部(1)由所述挤出成型体形成,相对于汽车的车身嵌合自如,所述弹性部(2)、(3)由将热塑性弹性体组合物挤出成型而得到的热塑性弹性体成型体形成,相对于设置在车门板上的车门玻璃(G)弹性接触自如。
Extrusion molded body and weather strip
挤出成型体和挡风条
19.04.2024
Patent
Elektronische Ressource
Chinesisch
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B29K Index-Schema für Formmassen oder Materialien für Verstärkungen, Füllstoffe oder vorgeformte Teile, z.B. Einlagen in Verbindung mit den Unterklassen B29B, B29C oder B29D , INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60J WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES , Fenster, Windschutzscheiben und bewegbare Dächer, Türen oder Ähnliches für Fahrzeuge |
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