GB223621A - Improvements in and relating to tanning - Google Patents
Improvements in and relating to tanningInfo
- Publication number
- GB223621A GB223621A GB1136123A GB1136123A GB223621A GB 223621 A GB223621 A GB 223621A GB 1136123 A GB1136123 A GB 1136123A GB 1136123 A GB1136123 A GB 1136123A GB 223621 A GB223621 A GB 223621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hides
- liquor
- autoclave
- tanning
- pressure
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/30—Chemical tanning using physical means combined with chemical means
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
223,621. Nance, C. W. April 27, 1923. Tanning and treating in vacuo; tanning under pressure.-Hides are tanned by treating them first with a tanning liquor which is made to boil continuously at a low pressure, and subsequently with a hot tanning liquor which is made to exert pressure on the hides, for example by thermal expansion. The hides are suspended in the liquor in an autoclave in which a high vacuum is produced, and the desired temperature of 90‹ F. is preferably maintained by allowing a little hot air, from which all oxygen has been removed, to enter the autoclave to agitate the hides and prevent the tannin from settling. These conditions operate for 6-8 hours. The autoclave is then completely filled with fresh air-free liquor and sealed. The liquor is heated so that, by thermal expansion, it exerts pressure on the hides, a temperature of 100‹ F. and a pressure of 50 lb. to the square inch being suitable. This procedure occupies 6-8 hours and is repeated, if necessary, until the hides are thoroughly tanned. The leather is then washed by covering it with water, producing a high vacuum in the autoclave, and allowing a little air to bubble through. Finally the leather is dried by subjecting it to a, high vacuum and allowing a little hot air, from which oxygen has been removed, to enter the autoclave. The process may be modified by omitting the preliminary treatment in vacuo, and by obtaining the desired pressure by pumping in hot air-free liquor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1136123A GB223621A (en) | 1923-04-27 | 1923-04-27 | Improvements in and relating to tanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1136123A GB223621A (en) | 1923-04-27 | 1923-04-27 | Improvements in and relating to tanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB223621A true GB223621A (en) | 1924-10-27 |
Family
ID=9984822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1136123A Expired GB223621A (en) | 1923-04-27 | 1923-04-27 | Improvements in and relating to tanning |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB223621A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07165010A (en) * | 1993-10-15 | 1995-06-27 | Trw Repa Gmbh | Inertia sensor for starting vehicle passenger restraint device |
| CN109852738A (en) * | 2019-03-15 | 2019-06-07 | 宜昌所罗门文化传播有限公司 | A kind of multi-functional tanning reactive tank |
-
1923
- 1923-04-27 GB GB1136123A patent/GB223621A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07165010A (en) * | 1993-10-15 | 1995-06-27 | Trw Repa Gmbh | Inertia sensor for starting vehicle passenger restraint device |
| CN109852738A (en) * | 2019-03-15 | 2019-06-07 | 宜昌所罗门文化传播有限公司 | A kind of multi-functional tanning reactive tank |
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