Continuous production of photo-sensitive glass bodies

Patent metadata

Field	Value
Publication number	US-10093575-B2
Application number	US-201615158204-A
Country	US
Kind code	B2
Filing date	May 18, 2016
Priority date	May 18, 2015
Publication date	Oct 9, 2018
Grant date	Oct 9, 2018

Abstract

A method for continuous production of photo-sensitive glass bodies, glass bodies, and structured glass articles are provided. The glass bodies include a glass having Si 4+ , 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 structurable antennae.

First claim

What is claimed is:

1. A method of production of a photo-sensitive glass body, comprising the steps of:
providing a mixture of raw materials for a glass;
melting the mixture into a melt;
transferring the melt into a mold; and
pressing the melt in the mold to a glass body,
wherein the melt at the time of transferring it into the mold has a temperature above 1000° C.,
wherein the melt cools down in the mold in such a way that a temperature range of 990° C. to 600° C. is passed through in a time span of less than 15 minutes,
wherein the glass comprises Si 4+ , a crystal-agonist, a crystal-antagonist, and a pair of nucleating agents,
wherein the crystal-agonist is selected from the group consisting of Na + , K + , Li + , and any combinations thereof,
wherein the crystal-antagonist is selected from the group consisting of Al 3+ , B 3+ , Zn 2+ , Sn 2+ , Sb 3+ , and any combinations thereof,
wherein the pair of nucleating agents comprises cerium and an agent selected from the group consisting of silver, gold, copper, any combinations thereof, and
wherein the crystal-agonist has a molar proportion in cat.-% in relation to a molar proportion of Si 4+ of at least 0.3 and at most 0.85,
the method further comprising the step of subjecting the melt to a sensitization step comprising cooling from a first temperature to a second temperature with an average cooling rate K of 10° C./h to 200° C./h, wherein the first temperature is at least above a glass transition temperature of the glass and the second temperature is at least 150° C. below the first temperature.

2. The method according to claim 1 , wherein the step of subjecting the melt to the sensitization step is subsequent to the melting step.

3. The method according to claim 1 , wherein the step of subjecting the melt to the sensitization step is subsequent to the transferring step.

4. The method according to claim 1 , wherein the glass comprises the following components in cat.-%

Si 4+
45 to 65

Crystal-agonists
30 to 45

Crystal-antagonists
3.5 to 9. 

5. The method according to claim 1 , wherein the glass has the following components in cat.-%

Si 4+
45 to 65

Crystal-agonists

Li +
25 to 40

K +
0 to 8

Na +
0 to 8

Crystal-antagonists

B 3+
0 to 5

Al 3+
 0 to 10

Zn 2+
0 to 4

Sb 3+
  0 to 0.4

Nucleating agents

Ce 3+ /Ce 4+
 >0 to 0.3

Ag +
 >0 to 0.5.

6. The method according to claim 1 , wherein the glass contains between 0.02 and 0.2 cat.-% Sb 3+ .

7. The method according to claim 1 , wherein the glass comprises anions and cations and a molar proportion of O 2− with regard to the anions of at least 99%.

8. The method according to claim 1 , wherein the sensitization step comprises cooling from a first temperature to a second temperature with an average cooling rate K of 20° C./h to 200° C./h.

9. The method according to claim 8 , wherein the sensitization step comprises cooling from a first temperature to a second temperature with an average cooling rate K of 20° C./h to 150° C./h.

10. The method according to claim 1 , wherein the sensitization step comprises cooling from a first temperature to a second temperature with an average cooling rate K of 60° C./h to 200° C./h.

Assignees

• Schott Ag

Inventors

• Niessner Lothar
• Feichtinger Martin
• Renz Carsten
• Schreder Bianca
• Qian Sean
• Xue Junming

Classifications

• C03C3/095

  containing rare earths · CPC title

• C03C4/04 Primary

  for photosensitive glass · CPC title

• C03B11/00 Primary

  Pressing {molten} glass {or performed glass reheated to equivalent low viscosity without blowing (shaping molten glass by a press-blow process C03B9/00, e.g. C03B9/193; re-forming shaped glass C03B23/00; re-heating the performed glass C03B29/00; transporting the performed or pressed glass during its manufacture C03B35/00)} · CPC title

• C03B32/00

  Thermal after-treatment of glass products not provided for in groups {C03B19/00} , C03B25/00 - C03B31/00 {or C03B37/00}, e.g. crystallisation, eliminating gas inclusions or other impurities; {Hot-pressing vitrified, non-porous, shaped glass products} · CPC title

• C03B11/125

  Cooling · CPC title