EP0378944B1 - Orthopädischer Sohlenrohling - Google Patents

Orthopädischer Sohlenrohling Download PDF

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Publication number
EP0378944B1
EP0378944B1 EP19890403575 EP89403575A EP0378944B1 EP 0378944 B1 EP0378944 B1 EP 0378944B1 EP 19890403575 EP19890403575 EP 19890403575 EP 89403575 A EP89403575 A EP 89403575A EP 0378944 B1 EP0378944 B1 EP 0378944B1
Authority
EP
European Patent Office
Prior art keywords
preform
cork
blanks
mixture
microcellular material
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 - Lifetime
Application number
EP19890403575
Other languages
English (en)
French (fr)
Other versions
EP0378944A1 (de
Inventor
Serge Ledos
Michel Marco
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.)
FRANCAISE D'ORTHOPODIE Ste
Original Assignee
FRANCAISE D'ORTHOPODIE Ste
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 FRANCAISE D'ORTHOPODIE Ste filed Critical FRANCAISE D'ORTHOPODIE Ste
Publication of EP0378944A1 publication Critical patent/EP0378944A1/de
Application granted granted Critical
Publication of EP0378944B1 publication Critical patent/EP0378944B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts

Definitions

  • the subject of the invention is a method of manufacturing blanks for orthopedic soles, or plantar orthotics.
  • the blanks thus manufactured must be worked in such a way as to be adapted to the affection from which the patient suffers and to his mode of fitting.
  • corrective elements glued flat to a base leather, which results in a loss of height of the therapeutic reliefs by deformation of the orthopedic sole when it is used in the shoe.
  • These corrective elements are generally made of cork or agglomerate, materials without flexibility, often poorly tolerated by suffering feet or not allowing at all the fitting of particularly susceptible feet.
  • Document DE-A-3,700,094 relates to a sole with a flat underside: this sole, a finished product, has no medical function since its sole role is to absorb perspiration from the arch of the foot.
  • the heat-crosslinkable plastic material with open cells is effectively absorbent for liquids.
  • Document GB-A-542.551 relates to the insole of a shoe, which sole comprises two superposed layers: the non-deformable lower layer comprising rubber and have a flat lower face; the upper layer, which can be shaped by the user's foot, also includes rubber.
  • the assembly is vulcanized at a temperature such that the vulcanization accelerator present in the lower layer reacts, while that present in the upper layer does not react. Consequently, the lower layer develops all of its characteristics while the upper layer remains deformable and develops all of its characteristics after a certain time.
  • the document AU-B-443.678 relates to a composition based on cork and a polyurethane resin, which can be used for the production of an insole for shoes: cork and natural rubber which is vulcanizable by expansion, unlike synthetic rubbers.
  • Document US-A-2,404,731 relates to a sole comprising a sponge rubber layer caught between two upper and lower layers. The latter is flat.
  • Document DE-A-1 616 154 describes an orthopedic sole comprising a relatively thick inner layer covered on each side by a thin layer of cork.
  • the bottom layer consisting mainly of rubber and cork, also includes soft spots formed from vulcanized sponge rubber.
  • the blanks for orthopedic soles which are the subject of the present invention are produced transversely curved and arched longitudinally at physiological heel heights, for example for men 2.5 cm, women 4.5 cm and children 1.5 cm.
  • the orthopedic insoles obtained after adaptation to each particular case perfectly coincide with the relief of the shoe, avoiding any loss of efficiency since there is no deformation of the therapeutic elements.
  • Figure 1 shows a vulcanized blank on a basic leather, in profile view.
  • Figure 2 shows the same blank in section along the axis AA.
  • FIG. 3 shows the same blank from above.
  • FIG. 4 represents a blank vulcanized directly, in profile view.
  • FIG. 5 represents the same blank in section along the axis BB.
  • FIG. 6 shows the same blank from above.
  • FIG. 7 represents a mold to be vulcanized in longitudinal section.
  • FIG. 8 represents a mold to be vulcanized in cross section along the axis DD.
  • the composition of the mixture used to obtain the microcellular material is as follows: natural rubber 50 to 70 kg, titanium oxide 3 to 4.2 kg, zinc oxide 3 to 4.2 kg, antioxidant 0.4 to 0, 8 kg, carbonate of magnesia 2.5 to 3.5 kg, olein 4 to 6 kg, stearin 5 to 7 kg, baking soda 2 to 3 kg, blowing agent 2 to 3 kg, accelerator 1 to 3 kg, sulfur 0 , 5 to 2 kg, cork 6 to 35 kg.
  • the respective amounts of the constituents vary according to the density to be obtained.
  • the following mixture is used to obtain the so-called "normal" density or reference density: natural rubber 60 kg, titanium oxide 3.6 kg, zinc oxide 3.6 kg, antioxidant 0.6 kg, carbonate of magnesia 3 kg, olein 4.5 kg, stearin 5.4 kg, baking soda 2.5 kg, blowing agent 2.5 kg, accelerator 1.8 kg, sulfur 0.9 kg, cork 11.6 kg, for a mixture final weight of 100 kg.
  • the material described in the present invention does not cause any allergy. It is light, airy and rot-proof.
  • the implementation of the invention is done as follows: after kneading and cylindering, quantities of mixture (1) are dosed and cut then placed in molds (3) in two parts whose internal shape is curved and arched at physiological heel heights, either on a leather base (2) placed in the lower part of the mold or directly, the material filling the entire length of the mold.
  • the molds thus loaded are introduced into an oven and heated.
  • the mixture vulcanizes and, after cooling and demoulding, blanks of one-piece orthopedic soles are obtained, that is to say of which the relief is continuous and does not have isolated and independent parts from each other.
  • These blanks can include in their structure one or more different densities of the microcellular material described.
  • the plates of material for grinding the soles with progressive correction are obtained by the same process using molds with a strictly flat bottom and cover.
  • a large set of molds makes it possible to obtain a wide variety of blanks.
  • the orthopedic insoles thus obtained adapt perfectly to the relief of the shoe, avoiding any loss of efficiency since there is no deformation of the therapeutic elements.
  • the rectification material presented in plates is the essential complement to the evolution of corrections.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Claims (3)

  1. Orthopädischer Monoblock-Sohlenrohling, bestehend aus einem Mikrozellularmaterial (1), dadurch gekennzeichnet, daß seine Unterseite in Längsrichtung gewölbt (C) und in Querrichtung ausgebaucht (G) ist, und daß das Mikrozellularmaterial (1) aus einer heißvulkanisierten Mischung von Kork und Naturgummi besteht.
  2. Orthopädischer Monoblock-Sohlenrohling zum Zweck der medizinischen Ausrüstung der Füße, dadurch gekennzeichnet, daß das Mikrozellularmaterial (1) aus der Mischung folgender Komponenten hervorgeht: Naturgummi 50 bis 70 kg, Titanoxid 3 bis 4,2 kg, Zinkoxid 3 bis 4,2 kg, Antioxygen 0,4 bis 0,8 kg, Magnesiumkarbonat 2,5 bis 3,5 kg, Olein 4 bis 6 kg, Stearin 5 bis 7 kg, Natriumbikarbonat 2 bis 3 kg, Quellmittel 2 bis 3 kg, Beschleuniger 1 bis 3 kg, Schwefel 0,5 bis 2 kg, Kork 6 bis 35 kg, wobei die jeweiligen Mengen dieser Komponenten entsprechend der Dichte des nach einem Heißvulkanisieren zu erzielenden Materials variiert.
  3. Rohling nach irgendeinem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß er an seiner Unterseite eine Basis aus Leder (2) aufweist.
EP19890403575 1988-12-20 1989-12-20 Orthopädischer Sohlenrohling Expired - Lifetime EP0378944B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8816790 1988-12-20
FR8816790A FR2640501B1 (fr) 1988-12-20 1988-12-20 Procede de fabrication d'ebauche de semelle orthopedique monobloc, ebauches obtenues par ce procede et moule necessaire a la mise en oeuvre du procede

Publications (2)

Publication Number Publication Date
EP0378944A1 EP0378944A1 (de) 1990-07-25
EP0378944B1 true EP0378944B1 (de) 1995-05-17

Family

ID=9373148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890403575 Expired - Lifetime EP0378944B1 (de) 1988-12-20 1989-12-20 Orthopädischer Sohlenrohling

Country Status (4)

Country Link
EP (1) EP0378944B1 (de)
DE (1) DE68922713T2 (de)
ES (1) ES2074474T3 (de)
FR (1) FR2640501B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2135995B1 (es) * 1996-04-09 2000-07-01 Huertas Serna Elisa Maria Procedimiento de fabricacion de plantillas de calzado.
DE19857568A1 (de) * 1998-12-14 2000-06-15 Ofa Bamberg Otto Fankhaenel & Orthopädische Schuheinlage

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR811065A (fr) * 1935-07-31 1937-04-06 Corchera Internac S A Procédé de traitement du liège et matières analogues, appareil pour la mise en oeuvre de ce procédé, et produits obtenus
GB542551A (en) * 1941-02-17 1942-01-14 Dunlop Rubber Co Improvements in and relating to footwear and the manufacture thereof
US2404731A (en) * 1943-11-29 1946-07-23 Ross H Johnson Making insoles
AU443678B2 (en) * 1967-11-13 1973-12-11 Cushioned Products Corporation Cork & foam product
DE1616154A1 (de) * 1968-01-22 1971-07-15 Schumagnet Inhaber Karoline Ge Verfahren zur Herstellung von orthopaedischen Korkeinlagen und Kork-Fussbettungen
DE6813047U (de) * 1968-12-22 1969-06-04 Neurauter Otmar Einlegesohle
DE3700094C2 (de) * 1987-01-03 1997-01-02 Emsold Ges Gert Helmers Gmbh & Flüssigkeitsaufnahmefähige Einlegesohle für einen Schuh

Also Published As

Publication number Publication date
EP0378944A1 (de) 1990-07-25
FR2640501A1 (fr) 1990-06-22
ES2074474T3 (es) 1995-09-16
FR2640501B1 (fr) 1997-08-22
DE68922713T2 (de) 1995-11-16
DE68922713D1 (de) 1995-06-22

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