JPS6445732A - Production of glass bulb for light bulb - Google Patents
Production of glass bulb for light bulbInfo
- Publication number
- JPS6445732A JPS6445732A JP20215787A JP20215787A JPS6445732A JP S6445732 A JPS6445732 A JP S6445732A JP 20215787 A JP20215787 A JP 20215787A JP 20215787 A JP20215787 A JP 20215787A JP S6445732 A JPS6445732 A JP S6445732A
- Authority
- JP
- Japan
- Prior art keywords
- sol
- mold
- bulb
- light bulb
- melting point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000011521 glass Substances 0.000 title abstract 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 abstract 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 238000002844 melting Methods 0.000 abstract 2
- 230000008018 melting Effects 0.000 abstract 2
- 239000012188 paraffin wax Substances 0.000 abstract 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 235000011114 ammonium hydroxide Nutrition 0.000 abstract 1
- 239000010419 fine particle Substances 0.000 abstract 1
- 230000009969 flowable effect Effects 0.000 abstract 1
- 238000001879 gelation Methods 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000377 silicon dioxide Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B19/00—Other methods of shaping glass
- C03B19/12—Other methods of shaping glass by liquid-phase reaction processes
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
PURPOSE:To obtain a glass bulb for light bulb having high melting point without requiring skilled technique, by pouring a sol into a mold prepared from a flowable mold material slightly soluble in a raw material sol, solidifying the sol and taking out the resultant gel moldings by fluidizing the mold material. CONSTITUTION:A mold 1 composed of outside diameter 1-1 and core 1-2 is arranged in an outer frame 2 using a paraffin having about 55 deg.C melting point. Then a sol in which a definite amount of silica fine particle is dispersed is poured into an solution obtained by hydrolyzing tetraethoxyorthosilane with hydrochloric acid. Further more, as the above-mentioned sol, the sol adjusted to pH 4.5 by properly dropping an ammonia water is used. The above-mentioned sol is subjected to gelation and then gel product is charged into e.g. a drier maintained at 65 deg.C together with the mold 1 to melt the mold 1. Then the remaining gel is taken out and paraffin attached thereto is washed with a heated aqueous methanol solution and removed. The resultant gel product is dried and sintered to provide the glass bulb for light bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20215787A JPS6445732A (en) | 1987-08-13 | 1987-08-13 | Production of glass bulb for light bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20215787A JPS6445732A (en) | 1987-08-13 | 1987-08-13 | Production of glass bulb for light bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6445732A true JPS6445732A (en) | 1989-02-20 |
Family
ID=16452901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20215787A Pending JPS6445732A (en) | 1987-08-13 | 1987-08-13 | Production of glass bulb for light bulb |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6445732A (en) |
-
1987
- 1987-08-13 JP JP20215787A patent/JPS6445732A/en active Pending
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