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EP2039784A1 - Tonneau pour le traitement humide des peaux. - Google Patents

Tonneau pour le traitement humide des peaux. Download PDF

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Publication number
EP2039784A1
EP2039784A1 EP07425578A EP07425578A EP2039784A1 EP 2039784 A1 EP2039784 A1 EP 2039784A1 EP 07425578 A EP07425578 A EP 07425578A EP 07425578 A EP07425578 A EP 07425578A EP 2039784 A1 EP2039784 A1 EP 2039784A1
Authority
EP
European Patent Office
Prior art keywords
shell
drum
longitudinal axis
paddles
paddle
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.)
Withdrawn
Application number
EP07425578A
Other languages
German (de)
English (en)
Inventor
Doriano Paglia
Davide Vallero
Felice Franceschino
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.)
Vallero International SpA
Original Assignee
Vallero International SpA
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 Vallero International SpA filed Critical Vallero International SpA
Priority to EP07425578A priority Critical patent/EP2039784A1/fr
Priority to PCT/IB2008/053747 priority patent/WO2009037637A2/fr
Publication of EP2039784A1 publication Critical patent/EP2039784A1/fr
Withdrawn legal-status Critical Current

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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
    • C14C15/00—Apparatus for chemical treatment or washing of hides, skins, or leather

Definitions

  • the present invention relates to a drum for carrying out wet processing of skins and hides, for example tanning, dyeing and liming.
  • such a drum comprises:
  • US patent 6 151 932 describes a drum of this type provided with four paddles, the bases of which are positioned on the internal surface of the side wall at, in each cross-section, the vertices of an imaginary square, in such a manner that two paddles located at diametrically opposed points are parallel to one another and perpendicular to the other two paddles, which are likewise located at two diametrically opposed points and are parallel to one another.
  • the paddles are furthermore arranged eccentrically, i.e. they lie on planes which do not intersect the longitudinal axis of the cylindrical shell.
  • such an arrangement of the paddles means that skin and hide processing can proceed by rotating the shell in just one direction, such that the material being processed tends to roll up on itself, is processed in a nonuniform manner and is difficult to discharge on completion of the operating cycle.
  • drum of the type stated at the beginning of the present description and characterised in that there are three such paddles which are oriented radially and are offset circumferentially from one another by approx. 120°.
  • Radial orientation of a paddle is intended to mean that it lies on a plane which substantially intersects the longitudinal axis of the shell.
  • Radial orientation of the three paddles makes it possible to rotate the drum alternately in both directions, in such a manner as to spread out the skins, thereby improving the uniformity of processing and facilitating discharge operations on completion of the operating cycle.
  • the cylindrical shell of the drum of the invention may be rotated at low speed while nevertheless ensuring excellent processing results, therefore enabling considerable energy savings. Moreover, thanks to the drum of the invention, it is possible to reduce the quantity of liquid to be used in the processing bath and conversely to increase the quantity of skins and hides which may be processed in one operating cycle, thereby making it possible to achieve further savings and increase the efficiency of the treatment process.
  • a drum for wet processing skins and hides comprises ( Figure 1 ) a shell 10 of substantially cylindrical shape, mounted so as to rotate about its longitudinal axis 12, and formed by a side wall 14 closed at the ends by respective end walls 16 (one of which has not been shown in Figure 1 for clarity's sake), so as to define an internal cavity 18.
  • the drum is furthermore provided in per se known manner with actuating means, not shown in the drawings, capable of setting it in rotation about the axis 12.
  • Three paddles 20 protrude from the internal surface of the side wall 14 within the cavity 18 and are capable of exerting a mechanical action on the skins during rotation of the shell 10 in such a manner as to assist the action of the chemical agents present in the processing bath.
  • the paddles 20 are oriented radially and are offset circumferentially from one another by approx. 120°.
  • Each paddle 20 is of a substantially rectangular shape defined by a pair of radial sides 22 and by a pair of sides 24, 26 parallel to the longitudinal axis 12 of the shell 10, which constitute the root and the free edge of the paddle 20, respectively.
  • the side 26 parallel to the longitudinal axis 12 of the shell 10, which constitutes the free edge of each paddle 20, is rectilinear.
  • each paddle 20 which defines the height thereof, is advantageously between one third and one sixth of the external diameter of the side wall 14 of the shell 10.
  • FIG. 2 shows an alternative embodiment of the invention, in which identical numbers to those used in the previous drawing identify identical or equivalent parts.
  • FIG. 3 shows a further embodiment of the invention, in which identical numbers to those used in the previous drawings identify identical or equivalent parts.
  • each pair of adjacent paddles 20 there is arranged a respective row of pegs 28 which extends parallel to the longitudinal axis 12 of the shell 10.
  • the pegs 28 are of a lower height than the length of the radial sides 22 of the paddles 20, such that they cannot damage the skins being processed even when a reduced quantity of bath liquid is present.
  • the drum shown in Figure 3 is suitable, for example, for carrying out tanning and dyeing treatments.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Soil Working Implements (AREA)
EP07425578A 2007-09-21 2007-09-21 Tonneau pour le traitement humide des peaux. Withdrawn EP2039784A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP07425578A EP2039784A1 (fr) 2007-09-21 2007-09-21 Tonneau pour le traitement humide des peaux.
PCT/IB2008/053747 WO2009037637A2 (fr) 2007-09-21 2008-09-16 Tambour pour traitement par voie humide de peaux et cuirs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425578A EP2039784A1 (fr) 2007-09-21 2007-09-21 Tonneau pour le traitement humide des peaux.

Publications (1)

Publication Number Publication Date
EP2039784A1 true EP2039784A1 (fr) 2009-03-25

Family

ID=39144564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425578A Withdrawn EP2039784A1 (fr) 2007-09-21 2007-09-21 Tonneau pour le traitement humide des peaux.

Country Status (2)

Country Link
EP (1) EP2039784A1 (fr)
WO (1) WO2009037637A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202300001344A1 (it) * 2023-01-27 2024-07-27 Officina Bartaloni S R L Struttura di bottale per concerie

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVI20110298A1 (it) * 2011-11-15 2013-05-16 Pajusco Tecnologie S P A Bottale perfezionato per la lavorazione di superfici laminari flessibili, quali pelli
ITVI20120257A1 (it) * 2012-10-04 2014-04-05 Pajusco Tecnologie S P A Bottale per il trattamento di pelli e simili
IT201900002419A1 (it) 2019-02-19 2020-08-19 Pajusco Tecnologie S R L Bottale per il trattamento di pelli

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4424690A (en) * 1980-05-13 1984-01-10 Gili Bas Francisco J Drum apparatus for the treatment of hides, leathers and the like
WO1985005379A1 (fr) * 1984-05-11 1985-12-05 Claude Pillard Foulon perfectionne pour le traitement des peaux ou autres materiaux
US6151932A (en) 1998-07-21 2000-11-28 Molto; Concepcion Julia Drum for treating leather, fur and similar products

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4424690A (en) * 1980-05-13 1984-01-10 Gili Bas Francisco J Drum apparatus for the treatment of hides, leathers and the like
WO1985005379A1 (fr) * 1984-05-11 1985-12-05 Claude Pillard Foulon perfectionne pour le traitement des peaux ou autres materiaux
US6151932A (en) 1998-07-21 2000-11-28 Molto; Concepcion Julia Drum for treating leather, fur and similar products

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202300001344A1 (it) * 2023-01-27 2024-07-27 Officina Bartaloni S R L Struttura di bottale per concerie

Also Published As

Publication number Publication date
WO2009037637A8 (fr) 2009-06-18
WO2009037637A3 (fr) 2009-05-14
WO2009037637A2 (fr) 2009-03-26

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