| 摘要 |
<p>The present invention provides a method for connecting rounded members (14) between planar members (16) comprising the steps of providing a rounded member (14) having an outer layer (20) having a first melting temperature range and an inner layer (22) concentrically disposed within the outer layer and having a second melting temperature range, the second melting temperature range being warmer than the first melting temperature range, providing a pair of opposed planar members (16), the planar members (16) each having a melting temperature within the first melting temperature range, positioning an end portion (14a) of the rounded member (14) between perimeter edges (18) of the pair of planar members (16) to define an interface area (26), applying pressure to the interface area (26) to collapse the end portion (14a) of the rounded member (14) to essentially a flattened position, applying sealing energy to the interface area (26) to heat the rounded member (14) to a temperature within the first melting temperature range but below the second melting temperature range, thereby forming a weld between the planar members (16), and the rounded member (14) in the interface area (26), and, releasing the pressure to the interface area (26) wherein the end portion (14a) of the rounded member (14) returns to an open position.</p> |
