| 摘要 |
<p>A method for forming strip material adapted to be cut into lengths to provide parts of fasteners is described. The method comprises the following steps: moving two non-fibrous polymeric strips from generally opposite directions around parallel arcuate spaced guides and away from the guides in the same direction along parallel paths; heating the polymeric strips on the spaced guides to soften them; feeding flexible, resilient polymeric monofilaments between the spaced guides from the sides thereof opposite said parallel paths and in a direction generally parallel to said parallel paths; alternately deforming the monofilaments into a first line of U-shaped portions while pressing the first line of U-shaped portions into engagement with one of the strips and then deforming the monofilaments into another line of U-shaped portions while pressing the other line of U-shaped portions into engagement with the other strip to embed and bond the U-shaped portions of the monofilaments in the strips in the positions that they are pressed into engagement therewith so that lengths of the monofilaments between the U-shaped portions extend generally normally between the strips as the strips move along the parallel paths; severing the monofilaments midway between the strips to form two brush-like halves; and heating the newly severed terminal ends of the monofilaments projecting from the strips to form heads having generally hemispherical surfaces opposite the strips.</p> |
