AT262927B - Process for the production of breathable leather substitutes - Google Patents

Process for the production of breathable leather substitutes

Info

Publication number
AT262927B
AT262927B AT19766A AT19766A AT262927B AT 262927 B AT262927 B AT 262927B AT 19766 A AT19766 A AT 19766A AT 19766 A AT19766 A AT 19766A AT 262927 B AT262927 B AT 262927B
Authority
AT
Austria
Prior art keywords
production
leather substitutes
breathable leather
substitutes
breathable
Prior art date
Application number
AT19766A
Other languages
German (de)
Original Assignee
Freudenberg Carl Fa
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 Freudenberg Carl Fa filed Critical Freudenberg Carl Fa
Priority to AT19766A priority Critical patent/AT262927B/en
Application granted granted Critical
Publication of AT262927B publication Critical patent/AT262927B/en

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Landscapes

  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)

Description

  

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  Verfahren zur Herstellung von atmungsaktiven Lederaustauschstoffen 
 EMI1.1 
 

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 Schale herausgenommen. Mit einer Spaltmaschine mit vibrierendem Messer wird zunächst die obere, für den beabsichtigten Verwendungszweck zu dichte Schicht entfernt und anschliessend wird der Rest des Gebildes mit der gleichen Maschine in Scheiben von 1 mm Dicke zerlegt. Man verdrängt aus diesen Flächengebilden das Wasser des Gelgerüstes völlig durch Aceton. Dieser Vorgang kann durch einen Vibrator beschleunigt werden. Jedes der abgespaltenen Flächengebilde wird mit einer Lösung von 145 g Polydiol 200 und 220g Hexamethylendiisocyanat in 600 g Aceton behandelt. Das   Flächengebilde wird   dann bei   700C   im Wärmeschrank von Aceton befreit. Gleichzeitig reagiert das Diisocyanat- Polydiolgemisch zu Polyurethan.

   Anschliessend werden die Flächengebilde in Wasser von 750C eingelegt, wobei 
 EMI2.1 
 Lösung in Essigester) besprüht und auf ein ebenfalls besprühtes Faservlies aus   Superpolyamidfasern   vom Quadratmetergewicht 442 g, das mit Polybutadienacrylnitril gebunden ist, aufgelegt und mit leichtem Druck von 9,5   kp/cm   bei 300C angedrückt. Zur Bindung des Klebstoffes wird das Gebilde 15 minder Temperatur von 1000C ausgesetzt. Nach der Klimatisierung bei   20 C   und 65%   relativerEeuchtigkeit   zeigen die Gebilde eine   Wasserdampfdurchlässigkeit   von 5 bis 6   m8/cm/h (nachMitton, : IUP/15). Díe   Gebilde halten 200 000 Faltungenmitdem Bally-Flexometer (IUP-20) aus. Im Beispiel wurde Na-Alginat als Polyelektrolyt verwendet.

   Es können jedoch auch Pektinate, Celluloseester, Kollagen, Polymethacrylsäureglykolester und andere Polyelektrolyte verwendet werden. Zur Stabilisation des Gelgerüstes können   ausser   Polyurethanen auch andere Polymere verwendet werden ; z. B. Polyvinylchlorid, Polymethylacrylat, Polyharnstoffe, Harnstoff-, Amin- und Phenolharze. 



    PATENTANSPRÜCHE :    
1. Verfahren zur Herstellung von atmungsaktiven Lederaustauschstoffen, dadurch gekennzeichnet, dass mit Polymeren stabilisierte ionotrope Porenmembrane auf Vliese, Gewebe, Gewirke unter Beibehaltung ihrer Atmungsaktivität aufgebracht werden.



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  Process for the production of breathable leather substitutes
 EMI1.1
 

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 Shell removed. Using a splitting machine with a vibrating knife, the upper layer, which is too dense for the intended use, is first removed and then the rest of the structure is cut into slices 1 mm thick with the same machine. The water of the gel structure is completely displaced from these flat structures by acetone. This process can be accelerated with a vibrator. Each of the split-off flat structures is treated with a solution of 145 g of Polydiol 200 and 220 g of hexamethylene diisocyanate in 600 g of acetone. The fabric is then freed from acetone at 700C in a heating cabinet. At the same time, the diisocyanate-polydiol mixture reacts to form polyurethane.

   The fabrics are then placed in water at 750C, whereby
 EMI2.1
 Solution in ethyl acetate) and sprayed onto a likewise sprayed nonwoven fabric made of superpolyamide fibers weighing 442 g per square meter, which is bound with polybutadiene acrylonitrile, and applied with a slight pressure of 9.5 kp / cm at 30 ° C. To bind the adhesive, the structure 15 is exposed to a temperature of 1000C. After air conditioning at 20 C and 65% relative humidity, the structures show a water vapor permeability of 5 to 6 m8 / cm / h (according to Mitton,: IUP / 15). The structures can withstand 200,000 folds with the Bally Flexometer (IUP-20). In the example, Na alginate was used as the polyelectrolyte.

   However, pectinates, cellulose esters, collagen, polymethacrylic acid glycol esters and other polyelectrolytes can also be used. In addition to polyurethanes, other polymers can also be used to stabilize the gel structure; z. B. polyvinyl chloride, polymethyl acrylate, polyureas, urea, amine and phenolic resins.



    PATENT CLAIMS:
1. Process for the production of breathable leather substitutes, characterized in that ionotropic pore membranes stabilized with polymers are applied to nonwovens, woven fabrics, knitted fabrics while maintaining their breathability.

 

Claims (1)

2. Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass man die Verbindung zwischen den Membranen und dem Vlies, Gewebe oder Gewirke durch Aufsprühen von Zweikomponentenkleber auf die beiden zu verklebenden Oberflächen erzielt. 2. The method according to claim 1, d a d u r c h g e k e n n z e i c h n e t that the connection between the membranes and the fleece, woven or knitted fabric is achieved by spraying two-component adhesive onto the two surfaces to be bonded. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, dass die Deckschichten dieser Flächengebilde in üblicher Weise, wie es bei Leder oder Lederaustauschstoffen geschieht, veredelt werden. 3. The method according to claims 1 and 2, characterized in that the outer layers of these flat structures are finished in the usual way, as happens with leather or leather substitutes.
AT19766A 1966-01-11 1966-01-11 Process for the production of breathable leather substitutes AT262927B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT19766A AT262927B (en) 1966-01-11 1966-01-11 Process for the production of breathable leather substitutes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT19766A AT262927B (en) 1966-01-11 1966-01-11 Process for the production of breathable leather substitutes

Publications (1)

Publication Number Publication Date
AT262927B true AT262927B (en) 1968-07-10

Family

ID=3484048

Family Applications (1)

Application Number Title Priority Date Filing Date
AT19766A AT262927B (en) 1966-01-11 1966-01-11 Process for the production of breathable leather substitutes

Country Status (1)

Country Link
AT (1) AT262927B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109003A1 (en) * 1982-11-16 1984-05-23 Steffi Kiessling-Plewa Web-like or sheet-like fabric containing synthetic and/or natural leather strands, and its use

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0109003A1 (en) * 1982-11-16 1984-05-23 Steffi Kiessling-Plewa Web-like or sheet-like fabric containing synthetic and/or natural leather strands, and its use

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