DE743098C - Flexible, unbreakable record - Google Patents

Flexible, unbreakable record

Info

Publication number
DE743098C
DE743098C DED63700D DED0063700D DE743098C DE 743098 C DE743098 C DE 743098C DE D63700 D DED63700 D DE D63700D DE D0063700 D DED0063700 D DE D0063700D DE 743098 C DE743098 C DE 743098C
Authority
DE
Germany
Prior art keywords
unbreakable
record
flexible
patent specification
optionally
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
DED63700D
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.)
DYNAMIT AG VORMALS ALFRED NOBE
Original Assignee
DYNAMIT AG VORMALS ALFRED NOBE
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 DYNAMIT AG VORMALS ALFRED NOBE filed Critical DYNAMIT AG VORMALS ALFRED NOBE
Priority to DED63700D priority Critical patent/DE743098C/en
Application granted granted Critical
Publication of DE743098C publication Critical patent/DE743098C/en
Expired legal-status Critical Current

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

Description

Biegsame, unzerbrechliche Schallplatte Das Patent 62o 233 betrifft biegsame, unzerbrechliche Schallplatten aus Kondensationsprodukten, welche durch Behandlung von Polyvinylalkohol und Aldehyd in Gegenwart von Säure oder sauer wirkenden Mitteln erhalten werden und sich durch Festigkeit und Zähigkeit des Materials auszeichnen, so däß sie in beliebig dünner Ausführung in biegsamer Form hergestellt werden können.Flexible, unbreakable record The patent 62o 233 relates to flexible, unbreakable records made of condensation products, which are obtained by treating polyvinyl alcohol and aldehyde in the presence of acid or acidic agents and are characterized by the strength and toughness of the material, so that they can be made as thin as desired can be made in flexible form.

Bei weiteren Versuchen stellte sich heraus, daß nicht nur Kondensationsprodukte von Vinylalkohol mit Formalin für Schallplatten hervorragend geeignet sind, sondern insbesondere Polyvinylchlorid, gegebenenfalls unter Zusatz von hochsiedenden Gelatiniermitteln zum Zwecke der Verbesserung der Elastizität der Platten. -Durgh eine geeignete Kombination verschiedener Polymerisationsstufen ist man in der Lage, Platten von jeder gewünschten Härte und Elastizität herzustellen. Man kann aber auch durch Vermischung eines hochpolymeren harten Polyvinylchlori ds mitgeeignetenhochsiedenden Weichmachungsmitteln ein Material mit den für die Herstellung von Schallplatten gewünschten Eigenschaften herstellen. Auf diese Weise ist zu erreichen, daß man gegenüber Schellack nicht nur den Vorteil der Biegsamkeit und Unzerbrechlichkeit sowie Dünnwandigkeit der Platten erzielt, sondern außerdem auch eine dem Schellack ebenbürtige Nadelfestigkeit, die dadurch gekennzeichnet ist, daß selbst beim Gebrauch spitzer Nadeln weder eine Bremswirkung durch ein zu weiches Plattenmaterial noch ein Steckenbleiben der Nadel, andererseits aber auch keine zu starke Abnutzung der Platte selbst erfolgt.In further experiments it turned out that not only condensation products of vinyl alcohol with formalin are excellent for vinyl records, but rather in particular polyvinyl chloride, optionally with the addition of high-boiling gelatinizing agents for the purpose of improving the elasticity of the panels. -Durgh a suitable combination different polymerization stages one is able to produce sheets of any desired To produce hardness and elasticity. But you can also mix a high polymer hard polyvinylchloride with suitable high-boiling plasticizers a material with the properties desired for the production of records. In this way it can be achieved that one not only has the advantage over shellac the flexibility and unbreakability as well as thinness of the panels are achieved, but also a needle strength that is equal to that of shellac is characterized in that even when using pointed needles, neither a braking effect If the sheet material is too soft, the needle may get stuck, on the other hand but there is also no excessive wear on the plate itself.

Claims (1)

PATENTANSPRUCH Biegsame, unzerbrechliche Schallplatte, bestehend aus füllstofffreiem polymerem Vinylchlorid oder verschiedenen Polymerisationsstufen desselben, gegebenenfalls mit einem Zusatz eines hochsiedenden Plastifizierungsmittels. Zur Abgrenzung des Anrneldungsgegenstandes vom Stand der Technik sind im Er- gu teilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschrift . . . .. . Nr. 550 883; französische Patentschriften 7 18 147, 725 084, 708 403 österreichische Patentschrift - 70348- PATENT CLAIM Bendable , unbreakable record, consisting of filler-free polymeric vinyl chloride or various polymerization stages of the same, optionally with the addition of a high-boiling plasticizer. To distinguish the subject of the registration from the state of the art, the following publications were considered in the grant procedure: German patent specification. . . ... No. 550 883; French patents 7 1 8 147, 725 084, 7 0 8 403 Austrian patent specification - 70348-
DED63700D 1932-06-15 1932-06-15 Flexible, unbreakable record Expired DE743098C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED63700D DE743098C (en) 1932-06-15 1932-06-15 Flexible, unbreakable record

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED63700D DE743098C (en) 1932-06-15 1932-06-15 Flexible, unbreakable record

Publications (1)

Publication Number Publication Date
DE743098C true DE743098C (en) 1943-12-17

Family

ID=7058773

Family Applications (1)

Application Number Title Priority Date Filing Date
DED63700D Expired DE743098C (en) 1932-06-15 1932-06-15 Flexible, unbreakable record

Country Status (1)

Country Link
DE (1) DE743098C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976769C (en) * 1953-12-29 1965-09-23 Licentia Gmbh Record mass

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT70348B (en) * 1913-07-03 1915-10-25 Griesheim Elektron Chem Fab Process for the production of technically valuable products.
FR708403A (en) * 1929-12-31 1931-07-23 Consortium Elektrochem Ind Process for the preparation of compounds of polyvinyl esters and fatty oils or essences
FR718147A (en) * 1930-06-07 1932-01-19 Consortium Elektrochem Ind Pressing materials suitable for the manufacture of phonograph records and the like
FR725084A (en) * 1930-10-30 1932-05-07 Rheinisch Westfalische Sprengs Phonograph record
DE550883C (en) * 1928-08-15 1932-05-21 Consortium Elektrochem Ind Process for the production of artificial compositions by polymerizing organic vinyl esters

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT70348B (en) * 1913-07-03 1915-10-25 Griesheim Elektron Chem Fab Process for the production of technically valuable products.
DE550883C (en) * 1928-08-15 1932-05-21 Consortium Elektrochem Ind Process for the production of artificial compositions by polymerizing organic vinyl esters
FR708403A (en) * 1929-12-31 1931-07-23 Consortium Elektrochem Ind Process for the preparation of compounds of polyvinyl esters and fatty oils or essences
FR718147A (en) * 1930-06-07 1932-01-19 Consortium Elektrochem Ind Pressing materials suitable for the manufacture of phonograph records and the like
FR725084A (en) * 1930-10-30 1932-05-07 Rheinisch Westfalische Sprengs Phonograph record

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE976769C (en) * 1953-12-29 1965-09-23 Licentia Gmbh Record mass

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