PROBLEM TO BE SOLVED: To provide a welt member and a weather strip structured so that a desired holding force is obtained not only by simply reducing a weight but also by suppressing deformation of a holding lip part of a welt body part.SOLUTION: A welt body part 31 which has a fitting base part 4 with a U-shaped cross-section, and in which a holding lip part 2 projects from an inner peripheral surface of the fitting base part 4, and a coating part 2a coated on the surface of the holding lip part 2 are formed by extrusion processing. An elastic foam composition foamed by microcapsules is applied to the welt body part 31, and set so that its specific gravity becomes 0.6-1.0. An elastic foam composition foamed by a chemical foaming agent is applied to the coating part 2a, and set so that its specific gravity becomes 0.6-0.8. A surface roughness Rz of the coating part 2a is set so as to be within a range of 20 μm-30 μm, and a coefficient of static friction of the coating part 2a is set so as to be 2 or more.
【課題】単に軽量化を図るのではなく、ウェルト本体部の保持リップ部が変形することを抑制し、所望の保持力が得られるようにしたウェルト部材およびウェザーストリップを提供する。【解決手段】横断面U字状の取付基部4を有し当該取付基部4の内周面から保持リップ部2が突出したウェルト本体部31と、保持リップ部2の表面に被覆された被膜部2aと、を押出し加工により形成する。ウェルト本体部31には、マイクロカプセルにより発泡した弾性発泡組成物を適用し、その比重が0.6〜1.0となるように設定する。被膜部2aにおいては、化学発泡剤により発泡した弾性発泡組成物を適用し、比重が0.6〜0.8となるように設定する。被膜部2aの表面粗さRzは20μm〜30μmの範囲内となるように設定し、当該被膜部2aの静摩擦係数は2以上となるように設定する。【選択図】図2
WELT MEMBER, AND WEATHER STRIP
ウェルト部材およびウェザーストリップ
2015-07-02
Patent
Electronic Resource
Japanese
IPC: | B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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