VEHICULAR AIR-CONDITIONING DEVICE CASING

摘要

The purpose is to provide a vehicular air-conditioning device casing having excellent mechanical characteristics, such as bending elastic modulus and tensile strength under special temperature and humidity conditions, and made of polypropylene resin containing fine glass hollow spheres enabling weight reduction. In order to achieve the purpose, a vehicular air-conditioning device casing is obtained by injection-molding a polypropylene resin containing fine glass hollow spheres in a range of 10 wt% to 20 wt% and including homopolypropylene resin, the fine glass hollow spheres having a small true density and a predetermined pressure capacity with a small average particle diameter (D50), the polypropylene resin having a bending elastic modulus of not less than 1900 MPa at 23ºC and being contained in a range of 80 wt% to 90 wt%.