EP1800556A1 - Antistatische Sohle, Schuh mit dieser Sohle und Verfahren zur Herstellung dieser Sohle - Google Patents

Antistatische Sohle, Schuh mit dieser Sohle und Verfahren zur Herstellung dieser Sohle Download PDF

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Publication number
EP1800556A1
EP1800556A1 EP06126533A EP06126533A EP1800556A1 EP 1800556 A1 EP1800556 A1 EP 1800556A1 EP 06126533 A EP06126533 A EP 06126533A EP 06126533 A EP06126533 A EP 06126533A EP 1800556 A1 EP1800556 A1 EP 1800556A1
Authority
EP
European Patent Office
Prior art keywords
antistatic
sole
insole
shoe
additives
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.)
Pending
Application number
EP06126533A
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English (en)
French (fr)
Inventor
Armando Arcangeli
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.)
Calzaturificio Valleverde SpA
Original Assignee
Calzaturificio Valleverde 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 Calzaturificio Valleverde SpA filed Critical Calzaturificio Valleverde SpA
Publication of EP1800556A1 publication Critical patent/EP1800556A1/de
Pending legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/36—Footwear with health or hygienic arrangements with earthing or grounding means

Definitions

  • the present invention relates to an antistatic sole, a shoe with this sole and a process for producing this sole.
  • Modern antistatic footwear was developed to allow the discharge to the ground of the static electricity which builds up on the body during the day if isolated from the earth.
  • antistatic shoes There are many types of antistatic shoes.
  • the best known prior art antistatic shoes comprise a rubber sole inside which there are inserted, in a point fashion, filaments of conducting material, for example copper filaments which, being inserted between the foot and the ground, discharge to the ground the electrostatic charges which build up on the human body.
  • an insole also fitted with conducting elements to create a connection between the foot and the sole and allow the passage of the electrostatic charges.
  • the conducting filaments pass through the thickness of the sole, along holes or slits made in the sole. In this way the filaments are in contact, on the outside, with the surface on which the wearer treads and, on the inside, with the conducting elements of the insole.
  • the conducting elements of the insole are, for example, plates or stitching made of antistatic material. Such elements pass through the thickness of the insole and make contact with the conducting filaments of the sole on one side and with the foot on the other.
  • antistatic footwear made in this way requires holes or slits to be made in the sole of the shoe: this does not guarantee the foot perfect protection from water or cold.
  • the filaments of conducting material are positioned below the sole in a point fashion, if the foot is not put down correctly the conducting filaments may not touch the ground and therefore will not discharge to earth the static electricity built up on the body. In this case, when the wearer gets out of his car or touches electronic equipment, he may feel the unpleasant sensation of an electric shock which electrostatic footwear should prevent.
  • the aim of the present invention is therefore to propose an antistatic sole and shoe which guarantee the foot total protection from the weather.
  • the invention also has for an aim to propose a simple process for the production of an antistatic sole, also allowing a reduction in production costs.
  • the present invention also has for an aim to provide an antistatic sole and shoe which guarantee, at any time and with any movement of the foot, the discharge to the ground of the electrostatic charge built up on the body.
  • the present invention has for an aim to produce an antistatic sole which, at any time, is in constant contact with the conducting elements in the insole, thus always guaranteeing the antistatic effect of the footwear.
  • the invention accordingly provides an antistatic sole having the features described in claim 1.
  • the invention accordingly also provides an antistatic shoe having the features described in claim 5.
  • the invention proposes a process for the production of an antistatic sole comprising the steps described in claim 11.
  • the numeral 1 denotes an antistatic shoe as a whole.
  • the antistatic shoe 1 comprises a sole 2, an insole 3 and an upper 4.
  • the antistatic shoe 1 has an insole 3 rendered antistatic by the application of conducting means 5.
  • the conducting means 5 comprise at least one set of stitching 6.
  • the stitching 6 is made using a thread with antistatic properties, that is to say, a conductor. Moreover, the stitching 6 passes through the insole 3, so that the antistatic material used to make it is in contact with the sole 2 at the lower part of the insole 3 and with the foot at the upper part of the insole 3.
  • Such stitching 6 is usually placed on the front half 7 of the insole 3, at the zone under the front of the foot.
  • the stitching follows a winding path for improved distribution of the stitching.
  • the conducting means 5 also comprise at least one plate 9, also made of a material with antistatic properties.
  • the plate 9 is connected to the insole 3 by two tabs 10, which pass through two cracks 11 made in the insole 3 and which clasp the insole 3, meeting again at the lower part. In this way the plate 9, by means of the tabs 10, makes contact with the sole 2.
  • the plate 9 is usually located at the heel.
  • the conducting means 5 are therefore located at load-bearing zones of the foot 12, so that, during movement, they are constantly in contact with both the body and the sole 2 below.
  • the sole 2 is made of an antistatic material.
  • the sole 2 preferably consists of a mixture of polymeric material 13 in which antistatic additives 14 are evenly distributed.
  • such antistatic additives 14 may be more concentrated in the load-bearing zones 12 of the sole, for example those of the front of the foot and the heel.
  • the polymeric material 13 preferably comprises a synthetic rubber, whilst the antistatic additives 14 include superconducting carbon powder, commonly known as carbon black.
  • the process for the production of a synthetic sole involves the preparation of a matrix of polymeric material 13 in which antistatic additives 14 are added. Agents and additives for vulcanisation of the rubber and strengthening fillers are also added to the matrix. The compound obtained is cast in moulds, in which the rubber is vulcanised.
  • Adding antistatic material 14 in the composition of the mixture makes the whole sole 2 antistatic, unlike the situation in commonly known antistatic footwear where only some zones have points with such properties.
  • the process disclosed for producing the antistatic sole 2 is simple and reduces production times and costs.
  • the process for assembly of the antistatic shoe 1 is also simplified, since the absence of the conducting filaments facilitates the step of applying the conducting means 5 on the insole 3. This is because the latter do not need to precisely fit together with the conducting filaments positioned in a point fashion, but instead with a bigger conducting surface.
  • the insole 3 conducting means 5 pass through the insole 3 from one side to the other and so act as a bridge between the foot and the sole 2. They are constantly in contact with the sole 2 on one side and with the foot on the other, allowing the passage of electrostatic charges from the foot to the sole 2, which disperses them to the ground by means of the antistatic components contained in it.
  • the other elements of which the shoe 1 consists also, in turn, allow the flow of electrical charges. For example, even the thread used to stitch the upper 4 to the sole 2 has antistatic properties.
  • end filaments 60 of the stitching may be brought into contact with the sole, below the insole, to discharge any other electrostatic charges.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
EP06126533A 2005-12-20 2006-12-19 Antistatische Sohle, Schuh mit dieser Sohle und Verfahren zur Herstellung dieser Sohle Pending EP1800556A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20050776 ITBO20050776A1 (it) 2005-12-20 2005-12-20 Suola antistatica,scarpa provvista di tale suola e procedimento per produrre tale suola

Publications (1)

Publication Number Publication Date
EP1800556A1 true EP1800556A1 (de) 2007-06-27

Family

ID=37896107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06126533A Pending EP1800556A1 (de) 2005-12-20 2006-12-19 Antistatische Sohle, Schuh mit dieser Sohle und Verfahren zur Herstellung dieser Sohle

Country Status (2)

Country Link
EP (1) EP1800556A1 (de)
IT (1) ITBO20050776A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2382321A1 (es) * 2010-02-12 2012-06-07 Francisco Mendi, S.L Calzado conductor.
ITUA20164217A1 (it) * 2016-06-08 2017-12-08 Pranem S R L Unipersonale Metodo per rendere elettricamente conduttive schiume isolanti, in particolare per l’uso nel settore calzaturiero, e prodotti così ottenuti

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1206288A (en) * 1966-12-23 1970-09-23 Koichi Ogoshi Conductive footwear
DE8437877U1 (de) 1984-12-22 1986-11-13 Uvex Winter Optik GmbH, 8510 Fürth Antistatischer Schuh, Stiefel o.dgl.
DE3830744A1 (de) * 1988-09-09 1990-03-22 Hans Joachim Sailer Reinraum-schuh
US5448840A (en) * 1991-05-16 1995-09-12 Cheskin; Melvyn Shoe containing electrically conductive integral elements
EP0736266A1 (de) * 1995-04-05 1996-10-09 W.L. GORE & ASSOCIATES GmbH Sicherheitsschuh mit elektrisch leitendem Sohlenaufbau
US20020112375A1 (en) * 2002-04-01 2002-08-22 Wayne Elsey Electrostatically dissipative athletic shoe

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1206288A (en) * 1966-12-23 1970-09-23 Koichi Ogoshi Conductive footwear
DE8437877U1 (de) 1984-12-22 1986-11-13 Uvex Winter Optik GmbH, 8510 Fürth Antistatischer Schuh, Stiefel o.dgl.
DE3830744A1 (de) * 1988-09-09 1990-03-22 Hans Joachim Sailer Reinraum-schuh
US5448840A (en) * 1991-05-16 1995-09-12 Cheskin; Melvyn Shoe containing electrically conductive integral elements
EP0736266A1 (de) * 1995-04-05 1996-10-09 W.L. GORE & ASSOCIATES GmbH Sicherheitsschuh mit elektrisch leitendem Sohlenaufbau
US20020112375A1 (en) * 2002-04-01 2002-08-22 Wayne Elsey Electrostatically dissipative athletic shoe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2382321A1 (es) * 2010-02-12 2012-06-07 Francisco Mendi, S.L Calzado conductor.
ITUA20164217A1 (it) * 2016-06-08 2017-12-08 Pranem S R L Unipersonale Metodo per rendere elettricamente conduttive schiume isolanti, in particolare per l’uso nel settore calzaturiero, e prodotti così ottenuti

Also Published As

Publication number Publication date
ITBO20050776A1 (it) 2007-06-21

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