Glass manufacturing – Processes – Reshaping or surface deformation of glass preform
Reexamination Certificate
2008-07-01
2008-07-01
Griffin, Steven P (Department: 1791)
Glass manufacturing
Processes
Reshaping or surface deformation of glass preform
C065S108000, C065S110000, C065S276000, C065S277000, C065S282000, C065S296000, C065S297000, C065S298000
Reexamination Certificate
active
10284864
ABSTRACT:
The invention relates to a method for shaping a tubular object made of glass or glass ceramics or any other thermoplastic material, comprising the following method steps:the object is heated up to softening;an inner shaping tool and an outer shaping tool are provided for shaping The outside and inside jacket surface of the object, of which at least the inner shaping tool consists at least in the region of its shaping surface of open-pored material with a permeability of between 10−11and 10−16m2;a free-flowing pressurized medium is conducted through the open-pored material towards the surface of the object to be shaped;the inner shaping tool is introduced into the object;the outer shaping tool is applied on to the object in order to shape the same
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Banhart, J., “Manufacture, characterisation adn application of cellular metals and metal foams”, Progress in Materials Science, 46 (2001) 559-632.
Kunert Christian
Lampart Friedrich
Oberhaensli Roman
Plapp Michael
Thurk Jurgen
Fitch Even Tabin & Flannery
Griffin Steven P
Lazorcik Jason L.
Schott AG
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