| 摘要 |
For trimming an archway, a drywall-trimming has a nose with an outer surface and an inner surface. The outer surface has a curved portion conforming substantially to an arcuate profile with a radius in a range from approximately +E,fra 1/4+EE inch to approximately +E,fra 3/4 inch+EE . The drywall-trimming strip has a series of slits defining a series of tabs spaced from one another along a tabbed edge but not extending into the nose. Near the tabbed edge, the slits have widened, oblong portions. Usually, the drywall-trimming strip has a flange extending from and along an opposite edge, but the flange is omitted for some applications. A comparatively softer portion, which includes the juncture where the tabs are joined to the tabbed edge, is made from a comparatively softer, more flexible, polymeric material, such as polyvinyl chloride having a hardness of Durometer 92 Shore A. A comparatively harder portion, which includes the flange and at least a substantial portion of the nose along the flanged edge, is made from a comparatively harder, less flexible, polymeric material, such as polyvinyl chloride having a hardness of Durometer Shore 82 D. |
