摘要:
Semi-circular cover members 17 and 17 having a spring function for opening and closing the openings of pores 15S are provided on the cavity inner wall side of a porous air vent 15 in order to close the openings of the above pores 15S while a small space remains between the above cover members 17 and 17 and the openings of the pores 15S of the porous air vent during vulcanization, whereby the occurrence of the occlusion of the above pores 15S is reduced and stains adhered to the cavity inner wall side of the mold 10 are removed by physical means such as a blast treatment while the above cover members 17 and 17 are closed at the time of cleaning to remove the stains of the above mold 10. Further, the above openings are opened as required to allow a cleaning liquid 24 go into the above pores 15S to clean the above mold 10 and remove stains in the pores 15S.
摘要:
A colored article comprises a workpiece having a surface producing a color by light interference. The surface is defined by forming a reflective surface and coating the reflective surface with a composite layer of SiC and SiO.sub.2 having an SiO.sub.2 ingredient ratio of 5 to 80% by weight and a thickness of 200 to 3000 .ANG. or with a composite layer of Si.sub.3 N.sub.4 and SiO.sub.2 having an SiO.sub.2 ingredient ratio of 5 to 80% by weight and a thickness of 400 to 4000 .ANG..
摘要:
An article having a colored surface comprises an article having a working surface and a coating applied on the working surface comprising a cermet composed of alumina and one of chromium and nichrome and exhibiting a black silver color.
摘要:
Semi-circular cover members 17 and 17 having a spring function for opening and closing the openings of pores 15S are provided on the cavity inner wall side of a porous air vent 15 in order to close the openings of the above pores 15S while a small space remains between the above cover members 17 and 17 and the openings of the pores 15S of the porous air vent during vulcanization, whereby the occurrence of the occlusion of the above pores 15S is reduced and stains adhered to the cavity inner wall side of the mold 10 are removed by physical means such as a blast treatment while the above cover members 17 and 17 are closed at the time of cleaning to remove the stains of the above mold 10. Further, the above openings are opened as required to allow a cleaning liquid 24 go into the above pores 15S to clean the above mold 10 and remove stains in the pores 15S.