GB351732A - Improvements in or relating to sound records - Google Patents
Improvements in or relating to sound recordsInfo
- Publication number
- GB351732A GB351732A GB1878330A GB1878330A GB351732A GB 351732 A GB351732 A GB 351732A GB 1878330 A GB1878330 A GB 1878330A GB 1878330 A GB1878330 A GB 1878330A GB 351732 A GB351732 A GB 351732A
- Authority
- GB
- United Kingdom
- Prior art keywords
- resin
- core
- acid
- sheets
- paper
- 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.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B3/00—Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
- G11B3/68—Record carriers
- G11B3/70—Record carriers characterised by the selection of material or structure; Processes or apparatus specially adapted for manufacturing record carriers
Abstract
In the manufacture of laminated sound records having a paper, fabric, or other fibrous core, the core is waterproofed by impregnating it with a resin soap and then precipitating the resin on the fibres by immersion in an acid bath. Any saponifiable resin, such as common rosin, shellac, acaroid resin, copal or kauri gum, may be used. Small quantities of agents such as stearic acid may be added to the resins before saponification, to prevent stickiness and to increase the water-resisting property. A resin soap solution may be prepared by adding rosin to boiling sodium hydroxide, excess of alkali being partly neutralized by hydrochloric acid. Sheets or discs of paper, linen, &c., are soaked in the soap solution, and after being squeezed between rollers they are immersed in dilute acid preferably hydrochloric acid. The sheets are then washed and dried. They may, if desired, be pressed under heat, before being used for making record blanks by applying to the core a material such as cellulose acetate or celluloid in disc or powdered form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1878330A GB351732A (en) | 1930-06-19 | 1930-06-19 | Improvements in or relating to sound records |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1878330A GB351732A (en) | 1930-06-19 | 1930-06-19 | Improvements in or relating to sound records |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB351732A true GB351732A (en) | 1931-07-02 |
Family
ID=10118343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1878330A Expired GB351732A (en) | 1930-06-19 | 1930-06-19 | Improvements in or relating to sound records |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB351732A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805172A (en) * | 1953-12-23 | 1957-09-03 | Gummed Products Company | Method of coating and remoistening gummed tapes |
-
1930
- 1930-06-19 GB GB1878330A patent/GB351732A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2805172A (en) * | 1953-12-23 | 1957-09-03 | Gummed Products Company | Method of coating and remoistening gummed tapes |
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