| 摘要 |
1,021,032. Moulding hollow articles; laminates and laminating. UNIVERSAL MOULDED GLASS CORPORATION. Jan. 16, 1963 [Jan. 30, 1962], No. 1964/63. Headings B5A and B5N. [Also in Division F2] A plurality of strips of fibrous material are fed from reels 85, Fig. 1, via funnels 95, 96, 97, 98 into a thermosetting resin supply pan in which they are impregnated and from which they enter a tube-forming the structure A from which the formed tube is pulled by a tread-type puller mechanism B on a floor E below which is a cut-off mechanism F. The die structure, Fig. 4, comprises a cylinder 26 within which is a core 27 which extends upwardly through funnels 95-98 and is tapered where it enters the cylinder 26. A cylindrical sleeve 28 surrounds the die 26 to define a cooling zone 29, a steam heating zone 33 and a cooling zone 36. The core 27 is divided into chambers including a cooling chamber 40, a heating chamber 42 and a cooling chamber 43. The puller mechanism B comprises a pair of endless belts carrying tread shoes 70. The cutoff mechanism comprises a motor-driven cut-off disc 72 driven by a motor controlled by a switch actuated by the lower end of the formed tube. Resin, e.g. analkyd or unsaturated polyester resin containing carnauba wax as a lubricant, is maintained in the reservoir C at the level L. The reinforcement fibrous strips of cellulosic mats, felting, paper or woven glass or other fibre, are supplied from twelve reels 85, Fig. 3, in four groups of three so providing four layers R1-R4, Fig. 16, each comprising three longitudinally abutting or overlapping strips, the joints between the strips of each successive layer being offset. The strips may pass through resin baths for impregnation before entering the associated funnel. The strips may be fed in twos from pairs of adjacent reels, Fig. 20. |
