| 摘要 |
A system and method for using a laser to weld a plastic substrate material to an adjacent material, such as a synthetic carpet panel. The materials are placed in contact with oppositely directed major surfaces, so as to provide an interface therebetween. The material closest to the laser is transparent to a wavelength of the laser beam, so that the impinging laser beam can be focused at a focal region on the interface. The other material adjacent to the interface is absorbent to the wavelength, so that heating of the other material by the laser beam causes a pattern of a plurality of melt zones to be formed, each melt zone consisting of portions of each of the materials. Subsequent cooling of the melt zones causes the adjacent materials to become welded together. Additives are combined with the materials to modify their transmission and absorption characteristics with respect to visible light and laser wavelengths. |
