| 摘要 |
<p>Dust plugs (38) provide seals for openings in door frames and window frames to seal against air or water infiltration. The dust plugs (38) are made continuously and automatically by feeding several weatherstrips (20, 22, 24) having piles extending from rigid backing strips (52, 54, 56) through a tool (26) having side slots (48) there through which extend from an anvil surface (60) thereof. The backing strips (52, 54, 56) rest on the surface (60) in edge-to-edge relationship. An adhesive tape (34) having a contact adhesive on one side thereof is fed synchronously with the pile weatherstripping (20, 22, 24) in juxtaposition with the weatherstrips and in contact with the exposed sides of the backing strips (52, 54, 56). The dust plug material (38) consists on the tape (34) in contact with the weatherstrips (20, 22, 24) and provides an assembly of the weatherstrips and the tape. Guides (62, 64) on upstream and downstream ends of the tool (26) bring the tape (34) into contacting relationship with the weatherstrips (20, 22, 24) to provide the assembled dust plug material (38). Counter rotating puller belts (42, 44) engage dust plug material (38) which may then be wound on a reel (40). For installation of the dust plug, the dust plug material (38) is unwound from the reel (40) and cut into dust plugs of desired length.</p> |
