Title:
TUBULAR GLASS PRODUCT MANUFACTURE AND DEVICE
Document Type and Number:
Japanese Patent JPS58115034
Kind Code:
A
Abstract:
A method an apparatus are disclosed for forming a continuous length of glass article (32). A coating of glass particles (38) is deposited on a mandrel (30) having a thermal coefficient of expansion much greater than that of the glass particles (38). The mandrel (30) is allowed to cool, thereby causing it to shrink and separate from the coating (38). The coating (38) is indexed a discrete longitudinal distance along the mandrel (30), thereby uncovering a region of the mandrel. Another coating of glass particles is deposited on the uncovered region of the mandrel (30) and over a portion of the previously applied coating. The steps of separating or freeing the coating (38) from the mandrel (30) longitudinally indexing the coating (32) with respect to the mandrel (30) and depositing another coating are repeated. Thus, each step of indexing longitudinally translates an incremental length of a porous body (41) from the end of the mandrel (30).
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Inventors:
RARII ERU KAAPENTAA
TOOMASU JII PARUHAMU
TOOMASU JII PARUHAMU
Application Number:
JP22364082A
Publication Date:
July 08, 1983
Filing Date:
December 20, 1982
Export Citation:
Assignee:
CORNING GLASS WORKS
International Classes:
C03B8/04; C03B17/04; C03B19/00; C03B19/14; C03B37/018; C03B37/014; C03B37/025; G02B6/00; (IPC1-7): C03B20/00; C03B37/00; G02B5/14
Attorney, Agent or Firm:
Toshihito Yamamoto