Abstract: Laminates are essentially composed of(A) a thermoplastic which is stable at high temperatures and is based on polyarylethersulfones, polyaryletherketones, polyetherimides or thermotropic polymers and(B) a metallic foil which is applied directly to the said polymers and whose surface area has been increased by chemical or mechanical treatment,the side having an increased surface area facing the thermoplastic which is stable at high temperatures, and the adhesion between the metallic foil (B) and the thermoplastic (A) which is stable at high temperatures being not less than 1.9 N/mm, measured at a peeling speed of 20 mm/min and a peeling angle of 180.degree..

Abstract: A process for the manufacture of wires and profiles, wherein thermoplastics are first mixed, in the melt, with from 5 to 40 per cent by weight (based on the mixture) of aluminum needles of length from 0.3 to 6 mm, of average diameter from 0.02 to 0.1 mm and of length to average diameter ratio of from 3 to 100, the mixture is extruded to give a wire or profile in which the aluminum needles are substantially oriented axially, and this wire or profile is finally hardened by cold-working.

Abstract: In an optical transformation drawing apparatus in which an image is projected by a projector on to a rear face of a projection screen so that a draftsman can trace on the front face of the screen the image transmitted through the screen, both the projection screen and a projector support frame supporting the projector are mounted on a fixed frame to pivot about an axis with the projector support frame and the projector thereon acting as a counterweight for the screen and with the projector support frame arranged parallel to the pivot axis, a mirror being provided to deflect the image from the projector on to the rear face of the screen.