DE598572C - Process for making tanned skins and pelts soft and supple - Google Patents

Process for making tanned skins and pelts soft and supple

Info

Publication number
DE598572C
DE598572C DEN34554D DEN0034554D DE598572C DE 598572 C DE598572 C DE 598572C DE N34554 D DEN34554 D DE N34554D DE N0034554 D DEN0034554 D DE N0034554D DE 598572 C DE598572 C DE 598572C
Authority
DE
Germany
Prior art keywords
leather
soft
pelts
supple
tanned skins
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
DEN34554D
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEN34554D priority Critical patent/DE598572C/en
Application granted granted Critical
Publication of DE598572C publication Critical patent/DE598572C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes

Description

Verfahren zum Weich- und Geschmeidigmachen von gegerbten Häuten und Fellen Vorliegende Erfindung betrifft ein Verfahren zum Zurichten gegerbter Häute und Felle, bei welchem dieselben nach dem Ausrecken einer vollständigen Durchfrierung unterzogen werden. Bei dieser Gefrierbehandlung der feuchten oder gegebenenfalls leicht angetrockneten Leder der verschiedenartigsten Gerbart kristallisiert das im Leder befindliche Wasser in Form von Eiskristallen aus, wobei gleichzeitig die einzelnen Lederfasern auseinandergesprengt werden und die Leder dadurch weich und geschmeidig werden.Process for softening and softening tanned hides and Hides The present invention relates to a method of dressing tanned hides and skins, in which the same after stretching out a complete freeze be subjected. In this freezing treatment the moist or possibly This crystallizes from slightly dried leather of the most varied types of tanning water in the leather in the form of ice crystals, while at the same time the individual leather fibers are blasted apart, making the leather soft and soft become limber.

Bei der seither üblichen Zurichtung von Ledern werden die gegerbten, gefärbten und gefetteten Leder nach dem Ausrecken zunächst mittels Wärme getrocknet und nach dem Anfeuchten zwecks Weichmachung auf Stollmaschinen gestollt. Bei dem zur Erzielung eines weichen und dehnbaren Leders notwendigen Stollen wurden die Lederfasern, insbesondere der Narben, einer starken mechanischen Beanspruchung unterzogen, so daß bei dieser Behandlung die Leder einer mehr oder weniger starken Qualitätsverschlechterung ausgesetzt sind. Abgesehen davon, fällt die Anschaffung kostspieliger Maschinen weg. Gleichzeitig wird eine Vereinfachung des Arbeitsprozesses durch den Wegfall der angeführten Arbeitsgänge bei dem erfindungsgemäßen Verfahren erzielt. Zur Ausübung des Verfahrens werden gefärbte und gefettete Leder nach dem Ausrecken in einem Gefrierraum bei etwa - 6° C zur vollständigen Durchfrierung gebracht. Während der Durchfrierung kann ein kalter, trockener Luftzug im Gefrierraum zur Einwirkung auf die Leder gebracht werden. Die zu erzielende Weichheit und Geschmeidigkeit der Leder hängt von dem Wassergehalt der Leder, mit dem dieselben in den Gefrierraum gebracht werden, sowie von der Art des Durchfrierens der Leder ab. Eine langsame Durchfrierung erzeugt z. B. größere Eiskristalle in den Ledern und übt dadurch eine größere-Dehnung auf die Lederfasern aus. Man ist daher in die Lage versetzt, je nach der Herstellungs- und Verwendungsart der einzelnen Ledersorten den gewünschten. Weichheitsgrad zu erzielen. Selbstverständlich können die Leder vor der Gefrierbehandlung einer leichten Antrocknung unterzogen werden.In the dressing of leather that has been customary since then, the tanned, dyed and greased leather is first dried with heat after stretching and after moistening it is staked on staking machines for the purpose of softening. In which To obtain a soft and elastic leather, the necessary studs were the Leather fibers, especially the grain, subjected to high mechanical stress, so that with this treatment the leather undergoes a more or less severe deterioration in quality are exposed. Apart from that, the purchase of expensive machines falls path. At the same time, the work process is simplified by the elimination of the operations listed achieved in the method according to the invention. To exercise of the process, dyed and greased leathers are made after stretching in a freezer Brought to a complete freezing point at about - 6 ° C. During freezing a cold, dry draft in the freezer compartment can affect the leather will. The softness and suppleness of the leather to be achieved depends on that Water content of the leather with which it is brought into the freezer, as well as on the way the leather freezes through. A slow freeze created z. B. larger ice crystals in the leather and thus exerts a greater stretch the leather fibers. One is therefore able, depending on the manufacturing process and type of use of the individual leather types the desired. Degree of softness achieve. It goes without saying that the leathers can be lightly cleaned before the freeze treatment Be subjected to drying.

Claims (1)

PATENTANSPRUCH: Verfahren zum Weich- und Geschmeidigmachen von gegerbten Häuten und Fellen, dadurch gekennzeichnet, daß die ausgereckten Leder in feuchtem Zustande einer vollständigen Durchfrierung unterzogen werden.PATENT CLAIM: Process for softening and softening tanned Hides and skins, characterized in that the stretched leather in moist States are subjected to complete freezing.
DEN34554D 1932-11-27 1932-11-27 Process for making tanned skins and pelts soft and supple Expired DE598572C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEN34554D DE598572C (en) 1932-11-27 1932-11-27 Process for making tanned skins and pelts soft and supple

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN34554D DE598572C (en) 1932-11-27 1932-11-27 Process for making tanned skins and pelts soft and supple

Publications (1)

Publication Number Publication Date
DE598572C true DE598572C (en) 1934-06-13

Family

ID=7346784

Family Applications (1)

Application Number Title Priority Date Filing Date
DEN34554D Expired DE598572C (en) 1932-11-27 1932-11-27 Process for making tanned skins and pelts soft and supple

Country Status (1)

Country Link
DE (1) DE598572C (en)

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