Antimicrobial glass compositions, glasses and polymeric articles incorporating the same
US-2018317496-A1 · Nov 8, 2018 · US
Glass material manufacturing method and glass material manufacturing device
US11319237B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11319237-B2 |
| Application number | US-201916297771-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 11, 2019 |
| Priority date | Jul 14, 2014 |
| Publication date | May 3, 2022 |
| Grant date | May 3, 2022 |
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- Title
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Abstract
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Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block (12) of glass raw material held levitated above a forming surface (10a) of a forming die (10) by jetting gas through a gas jet hole (10b) opening on the forming surface (10a), the block (12) of glass raw material is heated and melted by irradiation with laser beam, thus obtaining a molten glass, and the molten glass is then cooled to obtain a glass material. Control gas is jetted to the block (12) of glass raw material along a direction different from a direction of jetting of the levitation gas for use in levitating the block (12) of glass raw material or the molten glass.
First claim
Opening claim text (preview).
The invention claimed is: 1. A glass material manufacturing method comprising: heating and melting a block of glass raw material by irradiation with laser light with the block of glass raw material held levitated above a forming surface of a forming die by jetting gas through a gas jet hole opening on the forming surface, thus obtaining a molten glass, and then cooling the molten glass to obtain a glass material, wherein a flow rate of the gas through the gas jet hole after completely melting the block of glass raw material is smaller than a flow rate of the gas through the gas jet hole before the melting of the block of glass raw material by reducing the flow rate of the gas through the gas jet hole in a period from a time when the melting of the block of glass raw material starts to a time when the block of glass raw material has been completely melted. 2. The glass material manufacturing method according to claim 1 , wherein the flow rate of the gas through the gas jet hole is increased after the irradiation of laser light is stopped. 3. The glass material manufacturing method according to claim 1 , wherein, when the flow rate of the gas through the gas jet hole before the start of the melting of the block of glass raw material is L1, and the flow rate of the gas through the gas jet hole after the block of glass raw material has been completely melted is L2, L1/L2 is 1.05 to 1.5. 4. The glass material manufacturing method according to claim 1 , wherein, when the flow rate of the gas through the gas jet hole after completely melting the block of glass raw material is L2, and a flow rate of the gas through the gas jet hole during the cooling after the irradiation of laser light is stopped is L3, L3/L2 is 1.05 to 1.5. 5. The glass material manufacturing method according to claim 1 , wherein, when the flow rate of the gas through the gas jet hole before the start of the melting of the block of glass raw material is L1, and a flow rate of the gas through the gas jet hole during the cooling after the irradiation of laser light is stopped is L3, L3 is less than L1.
Assignees
Inventors
Classifications
- C03B19/1005Primary
Forming solid beads (chemical aspects C03C12/00) · CPC title
by hot-pressing powders · CPC title
- C03B5/235Primary
Heating the glass (C03B5/02, C03B5/18, C03B5/225 take precedence) · CPC title
using gas · CPC title
Re-forming shaped glass (re-forming fibres or filaments C03B37/14) · CPC title
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- What does patent US11319237B2 cover?
- Provided is a method that can manufacture a glass material having excellent homogeneity by containerless levitation. With a block (12) of glass raw material held levitated above a forming surface (10a) of a forming die (10) by jetting gas through a gas jet hole (10b) opening on the forming surface (10a), the block (12) of glass raw material is heated and melted by irradiation with laser beam, t…
- Who is the assignee on this patent?
- Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification C03B19/1005. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 03 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).