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DE494026C - vinyl record - Google Patents

vinyl record

Info

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
Application number
DESCH85086D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schoeller and Co Elektrotecnische Fabrik GmbH and Co
Original Assignee
Schoeller and Co Elektrotecnische Fabrik GmbH and Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schoeller and Co Elektrotecnische Fabrik GmbH and Co filed Critical Schoeller and Co Elektrotecnische Fabrik GmbH and Co
Priority to DESCH85086D priority Critical patent/DE494026C/en
Application granted granted Critical
Publication of DE494026C publication Critical patent/DE494026C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B3/00Recording by mechanical cutting, deforming or pressing, e.g. of grooves or pits; Reproducing by mechanical sensing; Record carriers therefor
    • G11B3/68Record carriers
    • G11B3/70Record 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)

PATENTANSPRÜCHE: 1. Schallplatte, dadurch gekennzeichnet, daß sie ganz oder vorwiegend aus Harnstoff besteht. PATENT CLAIMS: 1. Record, characterized in that it consists entirely or predominantly of urea. 2. Verfahren zum Herstellen von Schallplatten nach Anspruch 1, bei dem die Masse erhitzt und in Preßformen gepreßt wird, dadurch gekennzeichnet, daß der Harnstoff oder das Harnstoffgemisch auf ungefähr 145' C erwärmt und der Druck auf Zoo kg je Quadratzentimeter und darüber gehalten ,wird.2. Method of making records according to claim 1, wherein the mass is heated and pressed in compression molds, thereby characterized in that the urea or urea mixture is heated to about 145 ° C is heated and the pressure is kept on zoo kg per square centimeter and above.
DESCH85086D 1928-01-11 1928-01-11 vinyl record Expired DE494026C (en)

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)

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