Schott Ag

Schott Glaswerke

Schott Glas

Ulla Trinks

André Witzmann

Reinhard Männl

Andreas Wirth

Andr&eacute; Witzmann

Reiner Artmann

A bundle includes five or more cut elongated glass elements. Each cut elongated glass element includes a first end, a cylindrical portion, and a second end. At least one of the following equations is fulfilled: i) (I(max)−I(min))/I(mean)≤4.0×10[μm/μm]; or ii) (I(max)−I(min))/I(mean)≤4.0×10[μm/μm]. I(max) is a maximum center inner diameter of the cylindrical portions of all cut elongated glass elements; I(min) is a minimum center inner diameter of the cylindrical portion of all cut elongated glass elements; I(mean) is a mean of inner diameters at a center of the cylindrical portions of all cut elongated glass elements; I(max) is a maximum continuous inner diameter of the cylindrical portion of any single cut elongated glass element; and I(min) is a minimum continuous inner diameter of the cylindrical portion of the single cut elongated glass element.

Method and system for obtaining cut elongated elements

A method for further processing of a glass tube semi-finished product includes: providing the glass tube semi-finished product, along with tube-specific data for the glass tube semi-finished product; reading the tube-specific data for the glass tube semi-finished product; and further processing of the glass tube semi-finished product including a step of thermal forming carried out at least in sections. At least one process parameter during the further processing of the glass tube semi-finished product including the step of thermal forming carried out at least in sections is controlled as a function of the tube-specific data for the glass tube semi-finished product. In this way, the further processing can be matched more efficiently to the particular characteristics of a glass tube semi-finished product to be processed or a particular subsection thereof, and the relevant characteristics of the particular glass tube semi-finished product do not need to be measured again.

Method for further processing of a glass tube semi-finished product including thermal forming

A glass tube semi-finished product or a hollow glass product manufactured from the glass tube semi-finished product is provided with a first marking with information regarding origin and manufacture of the glass tube semi-finished product and a second marking, the information of which second marking is linked to the information of the first marking, so as to enable a determination regarding authenticity of the glass tube semi-finished product, origin of the glass tube semi-finished product, and/or origin of an apparatus with which the first and/or second marking was generated on the glass tube semi-finished product. The first marking is a marking that is produced at temperatures above the transformation temperature of the glass in a counterfeit-proof manner. The combination of two markings provides a high level of protection against counterfeiting.

Method for manufacturing a glass tube semi-finished product or a hollow glass product made therefrom with markings, and uses of the same

A glass tube semi-finished product or a hollow glass product manufactured from the glass tube semi-finished product is provided with a first marking with information on the origin and/or tube-specific production data of the glass tube semi-finished product, which marking is read from the hollow glass product after its manufacture to determine the origin and/or the tube-specific production data of the glass tube semi-finished product, e.g., to identify the semi-finished glass tube from which the hollow glass product has been made, and/or trace the tube-specific production data of this glass tube semi-finished product. This means that the entire supply chain for the hollow glass product from the supplier of the originally used glass tube semi-finished product up to the end product can be determined. The physical and chemical characteristics of the glass tube semi-finished product are not altered for producing the first marking.

Method for manufacturing a hollow glass product from a glass tube semi-finished product having markings, and uses of the same

In a method and apparatus for marking glass or a glass-like material a writing laser beam and the glass or the material are moved relative to each other in order to form an array of marks on the glass surface or material surface consisting of a plurality of discrete marks which are formed in discrete marking steps and are distributed along at least one direction. Marks directly adjacent to each other in a predetermined direction are formed in two marking steps, which are not carried out directly in succession one after the other. Thus, at least two series of marks are produced in the predetermined direction, wherein said marks are spaced at regular intervals from each other and are interleaved in the predetermined direction. As a result, and because of the temperature regime according to the invention during encoding, a particularly low-stress, crack-free marking of glass can be accomplished.

Method and apparatus for marking glass

In an apparatus and a method for marking glass with a laser, the glass is first brought to a temperature above the transformation temperature of the glass. The glass is then acted upon by a laser pulse which produces a mark on the surface of the glass. The peak power of the laser pulse is preferably selected so that it is merely a thermal interaction with the glass surface which occurs. This has the advantage that the material properties of the marked glass remain unchanged compared with the unmarked product.

Method and apparatus for marking glass with a laser

Disclosed is a method for the heat-softened severance of thin-walled glass tubes or plates with a wall thickness of no more than 0.2 mm, wherein the glass is softened on a width of no more than 0.4 mm, the softened area is reduced by drawing to a wall thickness of no more than 0.05 mm, and then is separated by additional heating in the drawn-out area.

Growing community of inventors

Mitterteich, Germany

Ulla Trinks