DE494026C - vinyl record - Google Patents
vinyl recordInfo
- Publication number
- DE494026C DE494026C DESCH85086D DESC085086D DE494026C DE 494026 C DE494026 C DE 494026C DE SCH85086 D DESCH85086 D DE SCH85086D DE SC085086 D DESC085086 D DE SC085086D DE 494026 C DE494026 C DE 494026C
- Authority
- DE
- Germany
- Prior art keywords
- record
- urea
- heated
- vinyl record
- pressed
- 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
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 title description 2
- 229920002554 vinyl polymer Polymers 0.000 title description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004202 carbamide Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 229920001800 Shellac Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004208 shellac Substances 0.000 description 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 description 1
- 229940113147 shellac Drugs 0.000 description 1
- 235000013874 shellac Nutrition 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
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
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Description
Schallplatte Die üblichen Schallplatten haben ein verhältnismäßig hohes Gewicht. Sie sind außerdem leicht zerbrechlich und erfordern deshalb sowohl im Gebrauch als auch beim Transport vorsichtige Behandlung.Record The usual records have a relative high weight. They are also easily fragile and therefore require both Careful handling both in use and during transport.
Man hat daher versucht, von der allgemein üblichen Verwendung von Schellack immer mehr abzusehen und neue geeignete Massen zu suchen, welche für die Herstellung von Schallplatten geeignet erscheinen. Bekannt ist es dabei, die Eigenschaft von Harnstoffderivaten mit Celluloseestern zu einer plastischen Masse zu gelieren, zu benutzen, um mit geeigneten Zusätzen eine brauchbare Schallplatte zu erhalten.Attempts have therefore been made to move away from the common usage of Shellac to be foreseen more and more and to look for new suitable masses, which for the Making records appear suitable. It is known about the property of urea derivatives to gel with cellulose esters to form a plastic mass, to use in order to obtain a usable record with suitable additives.
Die Erfindung bezweckt, eine widerstandsfähigere und im Gewicht leichte Schallplatte herzustellen. Dies wird gemäß der Erfindung dadurch erreicht, daß die Schallplatte vorwiegend oder ganz aus Harnstoff hergestellt wird. Wie bei der Herstellung von Schallplatten aus bisher gebräuchlichen Plattenmassen wird diese neue Masse erhitzt und in Preßformen zur fertigen Schallplatte gepreßt. Als vorteilhaft hat es sich erwiesen, das Harnstoffgemisch mehlförmig in auf etwa 145' C beheizte Formen aufzutragen und unter einem Druck zu pressen, der ungefähr roo kg je Quadratzentimeter und darüber beträgt.The aim of the invention is to provide a more resistant and lightweight Making vinyl record. This is achieved according to the invention in that the Record is made predominantly or entirely from urea. As with the manufacture of records from previously used record masses this new mass heated and pressed in molds to form the finished record. Has been beneficial It turned out that the urea mixture was made in flour form in molds heated to about 145 ° C to be applied and pressed under a pressure of approximately roo kg per square centimeter and above is.
Die Benutzung von Harnstoff, gegebenenfalls auch zusammen mit üblichen Bindemitteln, als Baustoff für die Schallplatte hat auch den Vorteil, daß der Herstellungspreis niedrig ist.--- Eine derartige Platte hat nur ein spezifisches Gewicht von 1,1 große Plastizität, geringe Schwindung und besitzt gegenüber den Beanspruchungen der Nadel eine erhebliche Widerstandsfähigkeit.The use of urea, possibly together with usual Binding agents, as a building material for the record, also has the advantage that the production price is low .--- Such a plate only has a specific gravity of 1.1 large Plasticity, low shrinkage and possesses against the stresses of the needle a considerable resilience.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH85086D DE494026C (en) | 1928-01-11 | 1928-01-11 | vinyl record |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH85086D DE494026C (en) | 1928-01-11 | 1928-01-11 | vinyl record |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE494026C true DE494026C (en) | 1930-03-17 |
Family
ID=7443114
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DESCH85086D Expired DE494026C (en) | 1928-01-11 | 1928-01-11 | vinyl record |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE494026C (en) |
-
1928
- 1928-01-11 DE DESCH85086D patent/DE494026C/en not_active Expired
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