| 摘要 |
Pile weatherstrip-ping, which is clad with a wrapping of a film ( 14, 25, 104, 216 ) of flexible material, has one or more rows ( 19, 27, 100, 102, 212, 214 ) of pile ( 10, 24, 105, 233 ) on a backing ( 12, 28, 106, 218 ) in side-by-side relationship. The wrapping film material conforms to the outside surface of the row ( 19, 27, 100, 212 21 102, 214 ) of pile so as to define a bulb or bulbs which are completely filled with pile. Single row ( 19, 27 ) pile weatherstripping is made by wrapping the pile ( 10, 24 ) with the film material ( 14, 25 ) after first ultrasonically welding the film material along one edge thereof to the backing ( 12, 28 ) under the pile. Then, the film material ( 14, 25 ) may be bent around the pile as it moves through a guide ( 88 ). The film material ( 14, 25 ) is then attached along the opposite edge to the backing thereof so as to completely enclose and clad the row ( 19, 27 ) of weatherstripping. The film material may be wrapped around one row ( 214 ) of two adjacent rows ( 212, 214 ) of pile ( 233 ) and attached to the backing ( 218 ), leaving the other row ( 212 ) unclad. The film material ( 104 ) may be wrapped separately around adjacent rows and attached to the backing ( 106 ) to provide two clad rows ( 100, 102 ) of weatherstripping. By selection of the porosity of the film material ( 14, 25, 104, 216 ) and the density of the pile ( 10, 24, 105, 233 ), weatherstripping having desired compressibility and air and water infiltration control properties may be produced. |
