GB754425A - An improved process for improving the wearability of glass - Google Patents

Abstract

754,425. Coating with metals. OWENSCORNING FIBERGLASS CORPORATION. Dec. 13, 1954 [Dec. 14, 1953], No. 36056/54. Class 82(2). [Also in Group XXIII] Glass, particularly fibre, while still in a heated and formable condition, is passed through an electrostatic field and allowed to cool while still under the influence of the field. The roughening of the surface thus produced becomes permanent on the completion of the cooling and solidification of the glass and makes the glass more durable and resistant to abrasion; the adhesion of sizing or lubricating materials or of binders or metallising coatings is also improved. In the form shown, fibres 63 being attenuated from nozzles 61 pass between high voltage electrodes 64 and, for metallizing, then pass before guns 65 discharging metal particles from a wire 66 having the same polarity applied thereto as to the electrodes 64, i.e. opposite to that established in the fibre. The coating metals may comprise copper, brass, molybdenum, tungsten, nickel, steel, aluminium, zinc and tin or alloys thereof. Instead of passing the roughened fibres before metallizing guns they may be drawn through molten metal.