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Continuous production of photo-sensitive glass bodies

Pending Publication Date: 2016-11-30
SCHOTT AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, fabrication of photostructurable glass using continuous pressing methods has not been considered so far

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0198] By pressing glass B1 in a mold, a glass body with a thickness of 15 mm was produced. The melt is thus cooled in the mold in such a way that it passes through the temperature range from 990° C. to 600° C. within 11 minutes. By subsequent sensitization, the glass was adjusted to a cooling state corresponding to cooling from 500° C. to 240° C. at an average cooling rate of 80° C. / h. The glass was sawn, ground and polished so as to be adjusted to a thickness of 0.5 mm. The transmittance was measured at a wavelength of 280 nm at different positions of the glass. 40 measurements were made, and the average value of the transmittance was 30%. The glass is so homogeneous that the standard deviation of the transmittance is only about 0.4% of the average value of the transmittance.

[0199] Using a wavelength of 320nm and a dose of 10J / cm 2 UV light is used to expose the vitreous. In order to generate via holes with a diameter of 40 μm and a hole center distance of 60 μm, the...

example 2

[0201] Vitreous bodies were produced and exposed as in Example 1. However, the tempering temperature was varied to study its effect on the etch rate. The highest etch ratio was obtained at a tempering temperature of 580°C.

example 3

[0203] Glass was produced and processed as in Example 1. However, change the designed hole diameter. The results show that the standard deviation is independent of the designed hole diameter.

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Abstract

A method for continuous production of photo-sensitive glass bodies, glass bodies, and structured glass articles are provided. The method comprises steps of a. providing a mixture, b,melting the mixture, c transferring a melted body to a mold, d suppressing the glass in the mold into a glass body, wherein the melted body has temperature higher than 1000 DEG in the mold where the melted body is transferred, wherein the glass bodies include glass having temperature higher than 1000 DEG, the melted body is cooled down in the mold in such mode from 990 DEG to 600 DEG in less than 15 minutes. The glass includes Si4+, at least one crystal-agonist, at least one crystal-antagonist, and at least one pair of nucleating agents. The glass may be used in a method for structuring of glass. The glass bodies may be structured and / or unstructured and used in different applications such as in components or as components in micro-technology, in micro-reaction-technology, in electronic packaging, for micro-fluidic components, in or as FED spacer, for bio-technology (for example titer plates), as interposer, and in or as three-dimensional structure antennae.

Description

technical field [0001] The invention relates to a method for continuously producing photosensitive vitreous bodies. The glass body consists of photostructurable glass. Background technique [0002] Processes for the continuous production of vitreous bodies are known to those skilled in the art from the prior art. They are suitable for the continuous production of pressed glass bodies that can be used for different applications from glass melts by pouring the melt into moulds. [0003] In the pressing process, a glass melt is cast into a mold, usually composed of metal. Depending on the size of the mold, the glass cools at different rates. This process can lead to crystal formation in crystallization-sensitive glasses, especially when the glass is cooled for too long, which is especially a problem at relatively large geometries. Glass becomes unusable due to crystallization. Consequently, continuous pressing methods have hitherto been used only for technical glasses whic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B11/00C03C4/04C03C3/095C03C6/04
CPCC03B11/00C03C1/00C03C3/095C03C4/04C03B5/193C03B11/125C03B32/00C03C23/002
Owner SCHOTT AG
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