Abstract:
Provided herein are novel tools and methods for the formation of vessels having sculpted interior and exterior forms. Novel high-temperature non-woven textile forms may be used to create a glass vessel having a three-dimensional sculpted interior of almost any shape. The non-woven textile forms may also be used as molds to artfully sculpt bottle exteriors. The invention allows for unprecedented control over the form of glass objects in an industrially scalable process.
Abstract:
A method for manufacturing seamless glass bottles, glass bottles having sculptural designs and shapes, art glass and sculpture in industrial quantities using a mold (10) of resin bonded sand to produce sculptural interior forms having texture, a complex shape with undercuts creating extremely fine surface detail capabilities not otherwise feasible with glass bottle manufacturing.
Abstract:
Glass-forming die, such as a parsain- forming or bottle- forming die, includes a die body having a molding surface with a curved contour to form at least a portion of a glass bottle or other article to be made. The die body has one or more cooling passages inside the body wherein the cooling passages is/are non-linear (non-straight) along at least a portion of their length to improve temperature control of the die during the glass forming operation. To this end, the cooling passages are curved in a manner to generally follow the curved contour along at least a portion of the length of the curved contour, and may include heat radiating or turbulating elements in the cooling passage. The glass- forming die alternately, or in addition, can include integral cooling fins, ribs or other heat radiating element on one or more exterior regions of the die.
Abstract:
Glass-forming die, such as a parsain- forming or bottle- forming die, includes a die body having a molding surface with a curved contour to form at least a portion of a glass bottle or other article to be made. The die body has one or more cooling passages inside the body wherein the cooling passages is/are non-linear (non-straight) along at least a portion of their length to improve temperature control of the die during the glass forming operation. To this end, the cooling passages are curved in a manner to generally follow the curved contour along at least a portion of the length of the curved contour, and may include heat radiating or turbulating elements in the cooling passage. The glass- forming die alternately, or in addition, can include integral cooling fins, ribs or other heat radiating element on one or more exterior regions of the die.
Abstract:
The use of AlN sintered ceramic as a material for a compression mould for manufacturing optical parts made of glass or glass ceramic permits polished moulded optical parts of high surface quality and high precision to be obtained. The material can be manufactured by processes known per se, such as hot processing, unpressurized sintering or by the sintering-HIP process. Subsequent compression of AlN by hot isostatic pressing (HIP) further reduces the residual porosity. The AlN ceramic manufactured by this process can contain up to 12 wt.% of alkaline earth oxides, up to 8 wt.% of aluminium oxide, up to 10 wt.% of rare earth oxides and up to 8 wt.% of carbon as sinter additives, the total content of which must not exceeded 15 wt.%. Preferably, the material has a residual porosity less than 2 %.
Abstract:
The use of oxide ceramic materials is described for pressing tools for the shaping of glass or glass-containing ceramic components having a high surface quality and narrow tolerances. They are polycrystalline, single- or multi-phase materials, which are inert to contact with the optical components to be pressed and which also display significantly better mechanical and thermal properties than monocrystalline substances, which have basically an anisotropic behaviour as a consequence of their geometrical anisotropy. The material envisaged for the application concerned by the invention may consist of an Al2O3 ceramic or a ZrO2- and/or HfO2 -containing ceramic. The material can also be designed as a multi-phase material, i.e. contain a matrix component and at least one particle component discretely dispersed in said matrix. Preferred are the ZrO2-containing, ZTC, PSZ or TZP ceramics which display outstanding thermomechanical properties for applications concerned by the invention, owing to the chemistry and above all the crystallography of their components. For this, mechanisms such as so-called "stress-induced transformation reinforcement" and "micro-crack reinforcement" play a significant part. By employing the materials concerned, pressing tools can be produced for the shaping, without secondary processing, of optical components with planar and/or spherical and/or aspherical convex and/or concave surfaces having a high surface quality and dimensional accuracy, and at the same time the production processes are improved.
Abstract:
Le procédé de fabrication d'un récipient en verre comporte une étape de mise en forme d'une paraison au moyen d'un moule dont au moins une surface est revêtue d'un lubrifiant en interface entre ladite paraison et ladite surface du mou!e. Selon l'invention, le lubrifiant est un lubrifiant solide en bisulfure de tungstène.
Abstract:
Process for the recovery of moulds (1) for the manufacturing of glass parts and containers, comprising the following stages: a)cleaning the layer of deteriorated material (2a) of the moulding surface (2) by a machining process which makes it possible to remove said layer (2a) copying a template of the part to be produced, to thus obtain a surface layer of material clean of impurities; and b)filling with welding and machining the external surfaces (3) for securing the mould (1) to the pouring or injection machine, to recover the original measurements of the mould (1). It achieves a simple and effective process which makes it possible to considerably lengthen the useful life of said moulds.
Abstract:
A method of forming a mould assembly (10) is provided. The method includes providing a mould body (12) defining a mould insert receiving zone (14). The method includes providing a mould insert (16), defining opposed sides (18, 20). One side (18) defines a mould cavity surface (21), against which an article is to be moulded, and the opposed side (20) defines a mould body seating arrangement (22) for seating the mould insert (16) in the mould insert receiving zone (14). The method further includes positioning the mould insert 16 in the mould insert receiving zone (14) of the mould body (12).
Abstract:
L' invention concerne un revêtement de dispositif de mise en forme de produits en verre comprenant -une première phase quasicristalline ou approximante ou amorphe métallique, et une seconde phase constituée d'un alliage eutectique de point de fusion compris entre 950 et 1150°C et de dureté nominale comprise entre 30 et 65 HRc; un moule de fabrication de produits en verre creux muni de ce revêtement; un outillage de mise en forme de verre en feuille ou en plaque muni de ce revêtement; un matériau constituant ce revêtement; une poudre pré-mélangée ou pré-alliée, ou un cordon souple ou fil formé permettant d' obtenir ce revêtement; un procédé de projection thermique pour l'obtention de ce revêtement.