EP0174425B1 - Anti-ABC Überschuh (atomar, biologisch oder bakteriell, chemisch) und sein Herstellungsverfahren - Google Patents

Anti-ABC Überschuh (atomar, biologisch oder bakteriell, chemisch) und sein Herstellungsverfahren Download PDF

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Publication number
EP0174425B1
EP0174425B1 EP19850102503 EP85102503A EP0174425B1 EP 0174425 B1 EP0174425 B1 EP 0174425B1 EP 19850102503 EP19850102503 EP 19850102503 EP 85102503 A EP85102503 A EP 85102503A EP 0174425 B1 EP0174425 B1 EP 0174425B1
Authority
EP
European Patent Office
Prior art keywords
mixture
overshoe
nbc
insert
textile insert
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
Application number
EP19850102503
Other languages
English (en)
French (fr)
Other versions
EP0174425A3 (en
EP0174425A2 (de
Inventor
Oreste Fabbro
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.)
SGE Generale Elastomeri SpA Soc
Original Assignee
SGE Generale Elastomeri SpA Soc
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 SGE Generale Elastomeri SpA Soc filed Critical SGE Generale Elastomeri SpA Soc
Publication of EP0174425A2 publication Critical patent/EP0174425A2/de
Publication of EP0174425A3 publication Critical patent/EP0174425A3/en
Application granted granted Critical
Publication of EP0174425B1 publication Critical patent/EP0174425B1/de
Expired legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B3/00—Footwear characterised by the shape or the use
    • A43B3/16—Overshoes
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/001—Adaptations for donning, adjusting or increasing mobility, e.g. closures, joints
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B17/00—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes
    • A62B17/006—Protective clothing affording protection against heat or harmful chemical agents or for use at high altitudes against contamination from chemicals, toxic or hostile environments; ABC suits

Definitions

  • Models (from Canada, Great Britain, Belgium and Italy) were produced by means of a process involving a rubberised fabric; the latter, suitably cut, was glued and shaped on an aluminium last and the whole assembly was vulcanised in an autoclave.
  • FR-A-1 413 536 From FR-A-1 413 536 it is known to manufacture a shoe in form of a boot made of a mixture based on vulcanised rubber forming a layer without any internal and external joints and having internal and external surfaces without any interruption of the surface continuity.
  • a textile insert On the inside of the layer a textile insert is bonded to the mixture.
  • the textile insert which during manufacturing of the shoe is fitted on a male part of a mould for receiving the moulded mixture on its outside surface, is made so as to cover the larger part of the mould without undergoing deformation and without forming interspaces between the individual threads, so that the rubber material is practically prevented from penetrating into the textile insert.
  • a shoe is therefore obtained in which the textile insert constitutes a sort of internal sock having the purpose of forming an internal lining rather than a shoe reinforcement.
  • Such a shoe has therefore limited strength characteristics and is not suitable for use as an anti-NBC overshoe.
  • DE-B-T 9697 V/61a a material made of woven synthetic polyammide fibres or like fibres and provided on one or both sides with a covering of vulcanised butyl rubber. Such a material is particularly indicated for overgarments requiring considerable flexural adaptability in addition to the capacity of resisting against agressive agents.
  • this prior art document does however not give any suggestions for providing an overshoe having anti-NBC characteristics.
  • the present invention aims at providing an overshoe and an associated manufacturing process, described below, which avoid the disadvantages of the prior art: overshoes with joints which have low reliability as regards the risk of leaks and/or having low mechanical strength, complex and costly manufacturing processes.
  • an anti-NBC overshoe made of a mixture based on a vulcanised rubber forming a layer without any internal and external joints and having internal and external surfaces without any interruption of the surface continuity, and comprising internally of the layer of the mixture a textile insert bonded to the mixture, characterized in that the textile insert is completely embedded and permeated by the mixture in an off-centre position with respect to the layer formed by the mixture, the mixture having on the outside of the textile insert a thickness of at least 2 mm and on the inside of the textile insert a thickness of about 0.1 mm.
  • the anti-NBC overshoe according to the present invention possesses high characteristics as regards quality since it has an external surface without joints, i.e.
  • the manufacturing process according to the invention which results in improved economy and speed of production and makes it possible to obtain easily overshoes which have superior quality characteristics, impermeability and resistance, comprises the following operations:
  • Figure 1a is a side elevational view of a particular embodiment of the overshoe.
  • Figure 1b shows a plan view of the anti-NBC overshoe which is the subject of the invention, seen from the sole, the said sole being provided with anti-slip pattern and relief.
  • Figure 1c shows a cross section of the overshoe at the level of the instep.
  • Figure 2 shows a flow chart of the process for manufacturing the anti-NBC overshoe, broken down into its most important operations.
  • the anti-NBC overshoe in the characteristic embodiment of Fig. 1a, is shaped in an ergonomic manner so as to allow it to be easily put on or taken off, the cross-section 3 of entry, or respectively the length of the leg portion 9, being about 9/16, or respectively 3/4, of the cross-section, or length, of the sole 11.
  • the toe 5 of the overshoe is thus extremely short, whereas a bulge at the heel 6 further facilitates introduction, or removal of the foot once inside.
  • an overshoe is obtained in which the cross-section at the instep 7 and the cross-section at the upper end of the leg portion 9 are very similar in size to the area of the upper 4.
  • the height of the leg portion 9 can be chosen as required, in accordance with the various requirements, from the foot 10 of the anti-NBC overshoe.
  • the anti-NBC overshoe is fixed to the leg of the wearer by means of a cord or lace which passes through holes 8 in the upper edge of the leg portion 9 and which has precisely the function of fastening the overshoe to the leg of the wearer.
  • the sole 11 has a special relief pattern to prevent slipping (Fig. 1b).
  • the overshoe which is the subject of the invention comprises a textile insert 1 which is made of polyamide fabric and has been specially woven and prepared and which is completely permeated by and embedded in a mixture 2 based on butyl or nitrile rubber to which KOEDUR has been added.
  • This insert 1 which is completely permeated by the mixture and embedded in it in the manner of a core, is off-centre with respect to the said mixture in the sense that it is arranged asymmetrically with respect to the layer formed by the said mixture.
  • the covering layer on the insert which insert has a thickness of 0.3 ⁇ 0.1 mm, can reach a thickness of 2 ⁇ 0.1 mm on the leg portion 2.3 + 0.1 mm on the toe and 3.2 (+0.4, -0.2) mm on the sole, whereas inter nally the layer of mixture, which has penetrated through the textile insert during the injection-moulding operation, reaches the thickness of 0.1 ⁇ 0.02 mm.
  • the overshoe thus consists completely of rubber on the outside and is without joints, whereas the insert is permeated by the mixture which extends inside by a thin layer beyond the insert, the insert and mixture, after vulcanisation, thereby forming a whole which is intimately bonded and inseparable.
  • Moulds are made from tempered AQ 50 steel suitable for treatment by nitriding.
  • the moulds are intended for injection moulding and consist of:
  • the textile insert can be introduced and the finished product removed despite the almost complete inelasticity.
  • the textile insert 1 is made of polyamide fabric woven with 12 beating-up operations both for the warp and for the weft and is prepared from pieces of cloth which are hollow-punched at 45° with respect to the direction of the beating-up; thus the elasticity required to compensate for the variability of the article is produced and perfect adaptability to the male part of the mould is ensured.
  • the mixture for moulding the anti-NBC overshoe is based on a butyl or nitrile rubber to which KOEDUR has been added.
  • the textile insert is fitted onto the open male part and, when the mould is closed, is tensioned and adheres perfectly to the male part.
  • the mixture is injected at a pressure of approximately 200 atmospheres so as to make a layer of about 0.1 mm penetrate beyond the textile insert, which is thus completely permeated by and embedded in the rubber and hence is inseparable from the latter once the vulcanisation process has been completed.
  • the overshoe consists completely of rubber on the outside and is without joints.
  • Anti-NBC overshoes are thus obtained which are particularly suited for protection against NBC aggressive agents and which can be used by the civil population, by civil defence personnel in the event of an NBC catastrophe, by specialists who operate, repair, overhaul and maintain NBC plants and by troops in the event of an NBC threat or conflict.

Landscapes

  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Claims (9)

  1. Anti ABC Ueberschuh, hergestellt aus einer, eine Schicht mit inneren und aeusseren Flaechen ohne jeglicher Unterbrechung der Flaechenkontinuitaet und ohne jeglicher inneren und aeusseren Verbindungsstellen bildenden Mischung (2) auf der Basis von vulkanisiertem Gummi, wobei innerhalb der Schicht aus der Mischung (2) eine an die Mischung (2) haftende Textileinlage (1) vorgesehen ist, dadurch gekennzeichnet, dass die Textileinlage (1) in einer bezueglich der durch die Mischung (2) gebildeten Schicht aussermittigen Lage vollstaendig in die Mischung (2) eingebettet und durch sie durchdrungen ist, wobei die Mischung (2) an der Aussenseite der Textileinlage (1) ein Dicke von mindestens 2 mm und an der Innenseite der Textileinlage (1) eine Dicke von etwa 0,1 mm besitzt.
  2. Anti-ABC Ueberschuh nach Anspruch 1, dadurch gekennzeichnet, dass der Querschnitt des Schaftteils (9) etwa 9/16 desjenigen der Sohle (11) betraegt und dass der obere Rand (3) des Schaftteils (9) mit Loechern (8) fuer einen Schnuersenkel bzw. eine Schnur zur Befestigung des Ueberschuhs am Bein der ihn tragenden Person versehen ist.
  3. Verfahren zur Herstellung eines anti-ABC Ueberschuhs nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    a) Auflegen einer Textileinlage (1) auf den Stempel eines Ueberschuh-Spritzpresswerkzeuges;
    b) Schliessen des Presswerkzeuges und folglich Strecken der Textileinlage (1), welche somit vollstaendig am genannten Stempel anliegt,
    c) Einspritzen einer Mischung (2) auf der Basis von Gummi unter hohem Druck in das Werkzeug mittels einer Spritzpresse, so dass eine Schicht der Mischung von aussen auf die andere Seite der oben erwaehnten Einlage (1) dringt, welche somit von der Gummimischung (2) vollstaendig durchdrungen und in sie eingebettet wird
    d) Vulkanisation der Mischung (2) innerhalb des Werzeugs bis zur Vervollstaendigung,wonach die Mischung (2) und die Einlage (1) innig miteinander verbunden sind und eine untrennbare Einheit entsteht.
  4. Verfahren nach Anspruch 3), dadurch gekennzeichnet, dass die Textileinlage (1) aus einem Polyamidgewebe mit 12 Schlagoperationen sowohl fuer die Kette als auch fuer den Schuss hergestellt und aus Stoffteilen zubereitet ist, welche zur Schlagrichtung um 45° hohleingeschlagen sind, um die zur Kompensation der Veraenderlichkeit des Artikels erforderliche Elastizitaet zu erzeugen und die genaue Anpassbarkeit an den Stempel des Werkzeugs sicher zu stellen.
  5. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Mischung fuer das Spritzpressen des anti-ABC Ueberschuhs auf Butylgummi basiert, dem KOEDUR beigegebenen wurde.
  6. Verfahren nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass die Mischung fuer das Spritzpressen des anti-ABC Ueberschuhs auf Nitrilgummi basiert, dem KOEDUR beigegebenen wurde.
  7. Verfahren nach einem der Ansprueche 3-6, dadurch gekennzeichnet, dass die Mischung bei einem Schliessdruck des Spritzpresswerkzeuges von etwa 200 Atmospheren eingespritzt wird, um ein Durchdringen einer mindestens 0,1 mm dicken Mischungsschicht auf die andere Seite der Textileinlage und auf deren Innenseite zu erzielen, im Verein mit der aeusseren Beschichtung derselben.
  8. Verwendung des anti-ABC Ueberschuhs nach Anspruch 1 oder 2 zum Schutz gegen Kernstrahlungen und gegen den Angriff seitens chemischer, biologischer und bakteriologischer Angriffsmittel.
  9. Verwendung des anti-ABC Uerberschuhs nach Ansprueche 1 oder 2 in Vorbereitung sowie ansschliessend an ABC Katastrofen.
EP19850102503 1984-08-30 1985-03-06 Anti-ABC Überschuh (atomar, biologisch oder bakteriell, chemisch) und sein Herstellungsverfahren Expired EP0174425B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB08421895A GB2163638B (en) 1984-08-30 1984-08-30 Anti-nbc (nuclear, biological or bacteriological, chemical) overshoe and its manufacturing process
GB8421895 1984-08-30

Publications (3)

Publication Number Publication Date
EP0174425A2 EP0174425A2 (de) 1986-03-19
EP0174425A3 EP0174425A3 (en) 1987-01-21
EP0174425B1 true EP0174425B1 (de) 1991-04-17

Family

ID=10566018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850102503 Expired EP0174425B1 (de) 1984-08-30 1985-03-06 Anti-ABC Überschuh (atomar, biologisch oder bakteriell, chemisch) und sein Herstellungsverfahren

Country Status (4)

Country Link
EP (1) EP0174425B1 (de)
CH (1) CH662253A5 (de)
DE (2) DE3582541D1 (de)
GB (1) GB2163638B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3644996C2 (de) * 1986-02-06 1989-12-07 Heinrich Vorndamme Ohg, 4934 Horn-Bad Meinberg, De
DE19509084A1 (de) * 1995-03-16 1996-09-19 Primo Schuerch Schuhüberzug
GB2320411A (en) * 1996-12-19 1998-06-24 Bernard George Wale Blank for outdoor footwear protector
GB2334427A (en) * 1998-02-18 1999-08-25 Primo Schurch Shoe-cover
DE202010014173U1 (de) 2010-10-11 2011-03-03 B. Stumpp & S. Baier Gmbh Schuh

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB739094A (en) * 1953-03-06 1955-10-26 John Louden Kay Safety or protective footwear
GB1096231A (en) * 1963-11-06 1967-12-20 Dunlop Rubber Co Manufacture of footwear
FR1413536A (fr) * 1964-11-05 1965-10-08 Dunlop Rubber Co Procédé de fabrication de chaussures comportant un renforcement textile
GB1176881A (en) * 1967-01-11 1970-01-07 Desma Werke Gmbh Footwear
DE1909268C3 (de) * 1969-02-25 1973-12-06 Siemens Ag, 1000 Berlin U. 8000 Muenchen Einstellbarer mehrphasiger Flussig keitswiderstand
GB1388949A (en) * 1971-04-27 1975-03-26 Freudenberg Carl Footwear
DE2212136A1 (de) * 1972-03-14 1973-09-27 Vredestein Rubber Duennwandiger ueberziehstiefel
CA994097A (en) * 1972-11-27 1976-08-03 Buhei Mahide Injection molded boots and method of manufacturing
GB1410713A (en) * 1973-02-17 1975-10-22 Vredestein Rubber Footwear in particular a boot and method for the manufacture thereof
DE7336712U (de) * 1973-10-11 1974-01-03 Freudenberg C Sicherheitsstiefel
GB2127671A (en) * 1982-09-27 1984-04-18 Brian Cook Non-slip outer foot-coverings

Also Published As

Publication number Publication date
GB2163638A (en) 1986-03-05
GB2163638B (en) 1987-12-23
DE3582541D1 (de) 1991-05-23
EP0174425A3 (en) 1987-01-21
DE174425T1 (de) 1986-09-25
EP0174425A2 (de) 1986-03-19
CH662253A5 (it) 1987-09-30

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