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    • 44. 发明公开
    • Methods for forming glass elliptical and spherical shell mirror blanks
    • 格拉舍伦·斯皮格罗林格(Glashüllen-Spiegelrohlinge)
    • EP2719670A1
    • 2014-04-16
    • EP12306268.9
    • 2012-10-12
    • Corning Incorporated
    • Dannoux, Thierry
    • C03B17/06C03B23/02
    • C03B23/0357C03B17/06C03B17/065C03B21/04C03B23/03C03B23/0355C03B40/02G02B5/10G02B27/141
    • The present invention concerns a method of producing glass focusing mirror blanks. Said method comprises:
      providing a glass sheet;
      heating the glass sheet or otherwise providing for the temperature of the glass sheet to be near the softening point of the glass so as to allow permanent deformation thereof; and
      reforming the glass sheet so as to form an array of glass shell structures therein by (1) pressing the sheet or (2) vacuum or differential-pressure forming the sheet, the respective resulting glass shell structures each having a respective outer convex surface and a respective inner concave surface,
      wherein the step of pressing is performed using a positive mold surface comprising an array of protrusions pressed against and in contact with the respective inner concave surfaces and
      without contacting the resulting respective outer convex surfaces with any solid object, and
      wherein the step of vacuum or differential-pressure forming is performed using a mold surface comprising an array of through holes with the shell structures formed by vacuum or
      differential pressure forming of the sheet against the mold surface with the glass shell structures formed into the array of through holes without contacting the resulting respective outer convex surfaces with any solid object and without contacting the inner resulting respective inner concave surfaces with any solid object.
    • 本发明涉及一种生产玻璃聚焦镜面坯料的方法。 所述方法包括:提供玻璃板; 加热玻璃板或以其他方式提供玻璃板的温度接近玻璃的软化点,以便允许玻璃板的永久变形; 并且通过(1)挤压片材或(2)形成片材的真空或差压来形成玻璃壳结构的阵列,从而形成玻璃壳结构的阵列,各玻璃壳体结构各自具有各自的外凸面, 相应的内凹表面,其中压制步骤使用正模表面进行,所述正模表面包括压靠在相应的内凹表面上并与其相接触的突起阵列,并且不使所得到的各个外凸面与任何固体物接触,并且其中 真空或差压成形的步骤是使用包括一组通孔的模具表面进行的,所述模具表面具有壳体结构,所述壳体结构通过真空或差压形成薄片而抵靠模具表面而形成,玻璃壳结构形成为通过 没有接触所得到的各个外凸面与任何固体物体并且没有c 用任何固体物体对内部产生的相应的内凹面进行加热。
    • 48. 发明申请
    • PRECISION ROLL FORMING OF TEXTURED SHEET GLASS
    • 精密滚筒成型的纹理玻璃
    • WO2013082212A1
    • 2013-06-06
    • PCT/US2012/066943
    • 2012-11-29
    • CORNING INCORPORATEDLOCK, William Edward
    • LOCK, William Edward
    • C03B13/08C03B17/06
    • C03B13/08C03B17/065Y02P40/57
    • A process and apparatus for precision glass roll forming a supply of molten glass at a glass temperature of 1000° C or higher with a pair of hot forming rolls having a surface temperature of about 500° C or higher located vertically below the glass feed. The forming rolls thin the supplied stream of molten glass to produce a formed glass ribbon. A pair of cold sizing and texturing rolls maintained at a surface temperature of about 400° C or lower or 300° C or lower is located vertically below the forming rolls. The sizing and texturing rolls thin and texture the formed glass ribbon to produce a sized glass ribbon having a desired texture, thickness and thickness uniformity. The sized and textured glass ribbon may have a thickness of 1mm or less that varies in thickness by no more than +/- 0.025 mm.
    • 一种用于在玻璃温度为1000℃以上的玻璃温度下形成玻璃熔融玻璃的方法和装置,其具有垂直于玻璃进料的表面温度为约500℃或更高的一对热成型辊。 成形辊使供应的熔融玻璃流稀薄以产生形成的玻璃带。 保持在约400℃或更低或300℃或更低的表面温度的一对冷定型和变形辊位于成形辊的垂直下方。 尺寸和变形辊薄并且织造成形的玻璃带以产生具有期望的质地,厚度和厚度均匀性的尺寸的玻璃带。 尺寸和纹理的玻璃带可以具有1mm或更小的厚度,厚度变化不大于+/- 0.025mm。