Abstract: There is an air coupled ultrasonic contactless method and an installation for non-destructive determination of defects in laminated structures with a width (W) and a multiplicity of n lamellas with intermediate N?1 bonding plants (B), whereas at least one transmitter (T) in a fixed transmitter distance (WTS) radiates ultrasound beams at multiple positions and at least one receiver (R) in a sensor distance (WSR) is receiving re-radiated ultrasound beams at multiple positions relative to the laminated structure (S). The method images the position and geometry of for example lamination defects and allows for inspection of laminated structure (S) of arbitrary height (H) and length (L), and an individual assessment of specific bonding planes (e.g. B1, B2, B3), as well in situations with constrained access to the faces of the sample parallel to the bonding planes.

Abstract: This invention relates to a dual composition bar and extrusion nozzle therefore. The bar is formed of two different materials, preferably of separate colors, and has substantially sinusoidal upper and lower surfaces with a tongue and groove interlock therebetween. The extrusion nozzle utilizes two dies, the first of which has two die portions separated by a die element for forming a tongue and groove interlock between the two materials. The die element does not extend to the second die wherein the convoluted die portions squeeze the two materials together enhancing the interlock.

Abstract: A plodder outlet assembly for producing a bicolored detergent bar comprising a first plodder outlet for delivering a first mass of detergent material to a compaction chamber. Four pipes are provided for delivering a second detergent material to the compaction chamber. These pipes extend into the compaction chamber and abut the inner walls thereof leaving a cruciform space for the first detergent material. The compaction chamber is slightly conical in configuration for compaction purposes and so that material flowing beyond the ends of the pipes will envelope the second detergent material.