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
  • C14C1/00—Chemical treatment prior to tanning
  • C14C1/06—Facilitating unhairing, e.g. by painting, by liming
• • 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
  • C14C1/00—Chemical treatment prior to tanning
  • C14C1/04—Soaking

Definitions

• ool which is separated from skins by the chemical hair removing process has a selling or an industrial value which is much below that of wool obtained by the heating process; which on the other hand has the drawback of deteriorating the skins.
• the weakening of the wool and its dull appear ance in the lime treatment are occasioned by the impregnation of the same by the hair-removing products employed which pass through the skin and rise by capillary action in the hair. If an attempt is made to apply this process to the preparation of hair for hat manufacture, there is observed an entire absence of character and strength and the products thus obtained give bad results for felting purposes.
• the improved process may be carried out as follows: The hides or skins being previously prepared in the usual manner are disposed on a table, the hair Application filed February 7, 1922. Serial No. 534,785.
• the skins are then piled-up by placing the hair sides together, each pile comprising no more than. 25 to 30 skins so as to avoid the liquid bein squeezed out.
• the skins are then subjected to the lime treatment proper in the usual manner the lime being applied on the flesh sides.
• the skins are then piled up again hair sides together, each pair being separated by a waterproof fabric in such manner that the hair is protected from the lime of the other skins. lVhen the skins have been subjected at the ordinary temperature to the action of the lime for a sufficient time say for 2 to 3 hours, the hair is removed therefrom in the usual manner as by brushing or scraping.
• a method of treating skins for the re moval of hair or wool suitable for felting purposes from said skins which comprises previously soaking said skins in slightly acidulated water, applying lime water on the flesh side of the skins and piling up said skins hair sides together, a waterproof fabric being interposed between each pair of skins, whereby the hair or wool thereof will be protected against the lime.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Cosmetics (AREA)
• Treatment And Processing Of Natural Fur Or Leather (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=8930314

Family Applications (1)

Country Status (5)

• 1921
  • 1921-02-19 FR FR541658D patent/FR541658A/fr not_active Expired
• 1922
  • 1922-02-07 US US534785A patent/US1586062A/en not_active Expired - Lifetime
  • 1922-02-09 GB GB3872/22A patent/GB175620A/en not_active Expired
  • 1922-02-14 AT AT102926D patent/AT102926B/de active
  • 1922-02-15 DE DES58884A patent/DE377133C/de not_active Expired

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