| 摘要 |
<p>1315862 Re-drawing glass OWENSILLINOIS Inc 28 April 1970 [28 April 1969] 20278/70 Heading C1M [Also in Division H1] A gas discharge display device which includes a plurality of elongate members each forming at least a part of a boundary accommodating a gaseous medium (see Division H1) is produced by forming a glass structure of a first size from a plurality of elongate members arranged in side-by-side relationship, softening the structure by passing it through a heating zone and applying a tensile force to the structure along its longitudinal axis so as to uniformly attenuate the structure to form an elongate glass structure similar to, but smaller than the first structure, the conductor or conductors of the deviee being added prior to or subsequent to the attenuation of the structure. Alternatively each elongate member may be attenuated individually and the members then assembled to form a device. The attenuation of the structure may be carried out using a re-draw apparatus comprising a feed mechanism 150, preheat infra-red lamps 151, a multizone controllable furnace 152 and a drawing mechanism 153. A glass containing in weight per cent SiO 2 80À5; B 2 O 3 12À9; Na 2 O 3À8; K 2 O 2À4 and Al 2 O 3 2À2 is disclosed.</p> |
