This paper reviews the use of diffractive optics for beam shaping of high-power lasers (100 W) for micro-welding of plastics. By using Fourier transformations on two-dimensional complex arrays, spatial domain images were transformed into phase domain images. These images were then used to produce a mask for the microlithography etching of a glass diffractive optical element (DE). A 80 W fiber laser with a wavelength of 1084 nm was coupled in air to the lens to shape the beam into predetermined patterns. These patterns were then reduced with standard optics to a desired size.

Since the first introduction of epoxy resins in 1946, adhesive bonding has been one of the most valuable uses for such resins. The scope and versatility of these resins offer a number of advantages. These include ease of application, low cure temperature, low cure pressure, and high strength. As a result, many consider epoxy adhesive to the “workhorse” of structure adhesives. The purpose of this seminar is to provide an understanding of epoxy adhesive technology for those starting out in this area or for those who are more experienced and require a “refresher” and update.

Comprehensive handbook emphasizes the relationship between the assembly methods, the materials, and the plastics manufacturing processes, thus enabling the reader to identify the best design/assembly method for a given application. The book has been completely updated and a new chapter on laser welding of plastics was added. The book describes all principal fastening and joining methods used to assemble plastic parts today – with their particular advantages and disadvantages. Assembly method limitations for a given material and/or a given molding process are discussed in great detail.