EP0159641A2 - Device for softening leather products - Google Patents

Device for softening leather products Download PDF

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Publication number
EP0159641A2
EP0159641A2 EP85104515A EP85104515A EP0159641A2 EP 0159641 A2 EP0159641 A2 EP 0159641A2 EP 85104515 A EP85104515 A EP 85104515A EP 85104515 A EP85104515 A EP 85104515A EP 0159641 A2 EP0159641 A2 EP 0159641A2
Authority
EP
European Patent Office
Prior art keywords
container
air pump
holder
containers
preceeding
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Withdrawn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
EP85104515A
Other languages
German (de)
English (en)
French (fr)
Inventor
Lanfranco Anzani
Onorio Anzani
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
Publication of EP0159641A2 publication Critical patent/EP0159641A2/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B1/00—Manufacture of leather; Machines or devices therefor
    • C14B1/40—Softening or making skins or leather supple, e.g. by staking, boarding, or crippling machines, by dry mills

Definitions

  • the present invention relates to a device for softening leather products, and particularly shoe uppers.
  • the moistening can cause undesirable variations to the surface structure of the leather which may be rejected as a defective products.
  • the object of the present invention is to provide a device for the softening of leather products, in particular shoe uppers, that consents to remedy these drawbacks.
  • the object of the present invention is to provide a device which makes possible to obtain a perfect softening of the leather products, particularly shoe uppers, by maintaining perfectly dried the outer and inner surfaces of the leather product so as to assure a perfect and complete adhesion thereto of the glues or thermoplastics materials.
  • Another object of the present invention is to provide a device for the softening of leather products in general, and shoe uppers in particular, which does not produce any superficial deformation or variation of the leather structure and consents an easy and regular processing of the leather products in the successive operation phases.
  • Still another object of the present invention is to provide a device for the softening of leather products which is simple and functional of economic realization and suitable for processing shoe uppers in particular.
  • a device for softening leather products, and particularly shoe uppers comprising at least a sealed container provided with at least two ducts connected respectively to an air pump and to means feeding vapour or water with compressed air.
  • vapour or water duct is alligned to a heating source which optionally extends to other surrounding areas of the container.
  • the container is provided with an inner holder which may be a reticular support for leather products in general and particularly for the shoe uppers, or a second inner container for the boots and leggings, sealed at the bottom and provided with a periferical elastic bordering at the upper opening.
  • an inner holder which may be a reticular support for leather products in general and particularly for the shoe uppers, or a second inner container for the boots and leggings, sealed at the bottom and provided with a periferical elastic bordering at the upper opening.
  • Said reticular support and/or the second container which are inserted into the containers are preferebly arranged on a support structure which comprises an emptying gearbox, a water tank, electrical gearbox having a control panel, and it is connected to a vapour or compressed air generator.
  • the device of the present invention can operate independently or can be integrated into the assembly lines of leather products, particularly footwear.
  • the figures show a device for softening leather products comprising essentially two or more containers 1.
  • the containers 1 are two arranged on a support structure 2.
  • the cover 5 may be only one turning on pin 6, and moving from a container to the adjacent one according to the operating cycle, as indicated by arrow 20 in figure 1.
  • each cover 3 or 5 is in any case provided with a peripheral weather strip 7.
  • a space 8 including an air pump with the relevant organs and connections for its working, an electrical panel 9 comprising all the command organs, the electrical devices or electronics for the automatic programming of the working cycle, and a water tank 10 with refilling mouth 21.
  • the tank 10 is connected either to the vapour producing boiler, or directly to the containers 1 together with the ducts of the compressed air produced by an integrated autonomous compressor, or by an external distribution plant.
  • Each container 1 is preferably of cylindrical form and provided on the base, with a box or protension 11, which is also preferably cylindrical, in which an electrical resistance 12 is inserted.
  • the box 11 is provided in its periphery with a plurality of ports 13 wherein heating rods are arranged.
  • the box 11 is also provided in its base with a discharge opening 14 with manifold 15 connected to the suction pipe of the air pump.
  • a second inlet opening 16 having the manifold 17 connected to a vapour producing boiler or, preferably, to a duct of compressed air and water coming from the tank 10.
  • the present device When the present device is used for softening the shoe uppers, they are inserted into the containers 1 placed on the reticular support 18. Once the covers 3 have been closed, a high vacuum is carried out in the inside of the containers 1, so as to remove air and impurities, also from the pores of the leather.
  • the vacuum is obtained by means of a pump (not illustrated in the figures) connected to the maniforld 15 of the opening 14.
  • Nebulized water is preferred since it is more economic to produce.
  • the nebulized water or vapour enters tangentially into the lower box 11 through opening 16.
  • the nebulized water flux under pressure forms a vortix tangent to the walls of the internal box 11 and comes into contact with the electric resistance 12 and it is heated.
  • the heated nebulized water upwardly moves ccovering the shoe uppers which are placed on the reticular support 18.
  • the behaviover of the vapour is the same as the nebulized water.
  • the outer surfaces which are perfectly dry, guarantee a sicure application of glues or/and thermoplastic materials.
  • the softening of the uppers carried out by the device of the present invention not only makes possible an easy performance of the folds and a perfectly adaption of the toe and counterforts on the forms, but also avoids the templating of the counterforts, since the intrisic softening of the product is so as to facilitate a perfect adherence to the forms and the tacking of the soles, leaving the corners perfectly glued to the profile of the form, without wrinkles.
  • the holder 19 is provided with feets 22, a base 23 side walls, and an upper opening covered by a thick layer of a compressible elastic material 24.
  • the containers 1' may be used also for shoe uppers or leather products.
  • the uppers 26 are subjeted to the same process phases, comprising vacuum and vapour or nebulized water under pressure treatments.
  • the legs 25, on the contrary, are protected by means of the side walls and the base 23 of the holder 19 and by the layer of elastic material 24, which adheres the necks of the boots between the uppers 26, and the legs 25.
  • the devices for softening leather products and in particular those for the softening of shoe uppers of the present invention may He made with one or more containers 1 and 1'.
  • the devices provided with more than one container may be constituted of all the containers 1, all containers 1', or of mixed containers.
  • the device of the present invention for softening leather products and shoe uppers in particular has been illustrated and described herein above according to a preferred embodiment with containers 1 or 1' having a cylindrical shape and with upper opening. It is evident that the same inventive concept may be applied also to different types of containers, for example, having a cubic, parallelepiped or polygonal shape with upper, frontal or lateral opening.
  • Containers 1 or 1' may be also horizontally or obliquely oriented with frontal or side opening; in these arrangements, both electrical resistances 12 and reticular support 18 take different shapes in order to promote the heat radiation and to facilitate the inlet and outlet of the products to be treated.
  • electrical resistances 12 are arranged on the bottom or on the lower of the containers and the supports are settled thereon. Moreover, the electrical resistances and the supports are oriented in a substantially parallel position with respect to the containers.
  • the present device may be manually used in its more economic embodiment, or by an automatic control operated by a programm, which may be independet or integrated to the assembly cycle of the leather products, particularly shoes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
EP85104515A 1984-04-24 1985-04-13 Device for softening leather products Withdrawn EP0159641A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8420687A IT1209536B (it) 1984-04-24 1984-04-24 Macchina per l'ammorbidimento diprodotti in pelle, in particolareper tomaie di calzature, contrafforti e puntali.
IT2068784 1984-04-24

Publications (1)

Publication Number Publication Date
EP0159641A2 true EP0159641A2 (en) 1985-10-30

Family

ID=11170575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85104515A Withdrawn EP0159641A2 (en) 1984-04-24 1985-04-13 Device for softening leather products

Country Status (6)

Country Link
EP (1) EP0159641A2 (pt)
KR (1) KR850007462A (pt)
BR (1) BR8502009A (pt)
ES (1) ES542503A0 (pt)
IT (1) IT1209536B (pt)
PT (1) PT80341B (pt)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101176577B (zh) * 2006-10-18 2012-07-04 蓝法兰可·安札尼 多功能皮件处理工作站
CN111705169A (zh) * 2020-07-15 2020-09-25 张娇娇 一种皮革软化加工方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101176577B (zh) * 2006-10-18 2012-07-04 蓝法兰可·安札尼 多功能皮件处理工作站
CN111705169A (zh) * 2020-07-15 2020-09-25 张娇娇 一种皮革软化加工方法

Also Published As

Publication number Publication date
BR8502009A (pt) 1985-12-31
PT80341A (en) 1985-05-01
PT80341B (en) 1986-11-12
KR850007462A (ko) 1985-12-04
ES8603726A1 (es) 1986-01-01
IT1209536B (it) 1989-08-30
ES542503A0 (es) 1986-01-01
IT8420687A0 (it) 1984-04-24

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): DE FR GB

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19880503