EP1243191A1 - Protective shoe or boot - Google Patents

Protective shoe or boot Download PDF

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Publication number
EP1243191A1
EP1243191A1 EP02001651A EP02001651A EP1243191A1 EP 1243191 A1 EP1243191 A1 EP 1243191A1 EP 02001651 A EP02001651 A EP 02001651A EP 02001651 A EP02001651 A EP 02001651A EP 1243191 A1 EP1243191 A1 EP 1243191A1
Authority
EP
European Patent Office
Prior art keywords
blend
boot
shoe
toe cap
protective shoe
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Withdrawn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
EP02001651A
Other languages
German (de)
French (fr)
Inventor
Herbert Herrmann
Peter Dr. Hirschmann
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.)
Uvex Arbeitsschutz GmbH
Original Assignee
Uvex Arbeitsschutz GmbH
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 Uvex Arbeitsschutz GmbH filed Critical Uvex Arbeitsschutz GmbH
Publication of EP1243191A1 publication Critical patent/EP1243191A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/081—Toe stiffeners
    • A43B23/086—Toe stiffeners made of impregnated fabrics, plastics or the like
    • A43B23/087—Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B7/00—Footwear with health or hygienic arrangements
    • A43B7/32—Footwear with health or hygienic arrangements with shock-absorbing means

Definitions

  • the invention is directed to a protective shoe, safety shoe or -boots with a plastic toe cap, especially a work safety shoe.
  • thermoplastic toe cap Synthetic resin reinforced by synthetic, inorganic fibers (EP-A 0 528 249), from thermally curable resin (GB-A 2 050 144), from one thermoplastic matrix with glass fibers (EP-A 0 614 623) and caps made by injection molding from polycarbonate (FR-A 2 525 443), from polypropylene or polyurethane (EP-A 0 617 582), made of polyamide (FR-A 2 572 259), made of ABS (GB-A 1 284 736) and unidirectional fibers in a thermoplastic matrix (EP-A 0 100 181).
  • thermoplastic toe cap Synthetic resin reinforced by synthetic, inorganic fibers (EP-A 0 528 249), from thermally curable resin (GB-A 2 050 144), from one thermoplastic matrix with glass fibers (EP-A 0 614 623) and caps made by injection molding from polycarbonate (FR-A 2 525 443), from polypropylene or polyurethane (EP-
  • Such toe caps impose requirements on the various standards with regard to their strength, for example a shock resistance of at least 200 J and a resistance of 15 KN.
  • the object of the invention is one Protective shoe, safety shoe or boot with a plastic toe cap to create that at least meet the standard requirements is, but should still surpass this with inexpensive manufacturability.
  • This object is achieved in that as a plastic a polycarbonate blend is used for the toe cap.
  • PC / ABS blends PC / TPU blends and PC / PBT or are preferred PC / PET blends used.
  • Toe caps according to the invention meet the requirements for impact and Compressive strength close to DIN EN 12568 as well as according to DIN EN 12568 thermal and chemical aging.

Landscapes

  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

A protective safety shoe or boot, consists of a plastic toe cap, made of a polycarbonate blend.

Description

Die Erfindung richtet sich auf einen Schutzschuh, Sicherheitsschuh bzw. -stiefel mit einer Zehenkappe aus Kunststoff, insbesondere einen Arbeitsschutzschuh.The invention is directed to a protective shoe, safety shoe or -boots with a plastic toe cap, especially a work safety shoe.

Derartige Zehenkappen für Schuhe sind bekannt aus WO 98/48999. Wie dort ausgeführt wird, gibt es bereits Zehenkappen aus thermoplastischem Kunstharz verstärkt durch synthetische, anorganische Fasern (EP-A 0 528 249), aus thermisch härtbarem Harz (GB-A 2 050 144), aus einer thermoplastischen Matrix mit Glasfasern (EP-A 0 614 623) sowie Kappen hergestellt durch Spritzgießen aus Polycarbonat (FR-A 2 525 443), aus Polypropylen oder Polyurethan (EP-A 0 617 582), aus Polyamid (FR-A 2 572 259), aus ABS (GB-A 1 284 736) sowie aus unidirektionalen Fasern in einer thermoplastischen Matrix (EP-A 0 100 181). Weiterhin sind Zehenkappen bekannt geworden, die eine Sandwichstruktur aufweisen (US-A 5,560,985).Such toe caps for shoes are known from WO 98/48999. How there is already a thermoplastic toe cap Synthetic resin reinforced by synthetic, inorganic fibers (EP-A 0 528 249), from thermally curable resin (GB-A 2 050 144), from one thermoplastic matrix with glass fibers (EP-A 0 614 623) and caps made by injection molding from polycarbonate (FR-A 2 525 443), from polypropylene or polyurethane (EP-A 0 617 582), made of polyamide (FR-A 2 572 259), made of ABS (GB-A 1 284 736) and unidirectional fibers in a thermoplastic matrix (EP-A 0 100 181). There are also toe caps become known, which have a sandwich structure (US-A 5,560,985).

An derartige Zehenkappen werden von den verschiedenen Normen Anforderungen hinsichtlich deren Festigkeit gestellt, beispielsweise eine Stoßfestigkeit von mindestens 200 J und eine Widerstandsfähigkeit von 15 KN.Such toe caps impose requirements on the various standards with regard to their strength, for example a shock resistance of at least 200 J and a resistance of 15 KN.

Der Erfindung liegt hiervon ausgehend die Aufgabe zugrunde, einen Schutzschuh, Sicherheitsschuh bzw. -stiefel mit einer Kunststoff-Zehenkappe zu schaffen, der mindestens den Normanforderungen gerecht wird, diese bei kostengünstiger Herstellbarkeit aber noch übertreffen soll. Proceeding from this, the object of the invention is one Protective shoe, safety shoe or boot with a plastic toe cap to create that at least meet the standard requirements is, but should still surpass this with inexpensive manufacturability.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß als Kunststoff für die Zehenkappe ein Polycarbonatblend verwendet wird.This object is achieved in that as a plastic a polycarbonate blend is used for the toe cap.

Vorzugsweise werden PC/ABS-Blends, PC/TPU-Blends und PC/PBT- oder PC/PET-Blends eingesetzt.PC / ABS blends, PC / TPU blends and PC / PBT or are preferred PC / PET blends used.

Besonders günstig ist die Verwendung eines PC/PBT-Blends. Das letztgenannte Blend wurde für Rasenmäher- und Motorsägenteile eingesetzt. Überraschenderweise wurde gefunden, daß bei Verwendung dieses Materials für eine Zehenkappe folgende Eigenschaften erzielt werden konnten:The use of a PC / PBT blend is particularly favorable. The latter Blend was used for lawn mower and chain saw parts. Surprisingly it was found that using this material the following properties could be achieved for a toe cap:

Erfindungsgemäße Zehenkappen entsprechen den Anforderungen an Stoßund Druckfestigkeit nah DIN EN 12568 sowie nach DIN EN 12568 hinsichtlicher thermischer und chemischer Alterung.Toe caps according to the invention meet the requirements for impact and Compressive strength close to DIN EN 12568 as well as according to DIN EN 12568 thermal and chemical aging.

Bei einer Stoßeinwirkung von 200 J wurden folgende Werte erzielt: Thermische Alterung Höhere Umgebungstemperatur + 60° C 23 bis 25 mm Resthöhe Niedrigere Umgebungstemperatur - 20° C 26 bis 28 mm Resthöhe Chemische Alterung Gegen Kraftstoff 26 bis 27 mm Resthöhe Gegen Laugen 27 bis 28 mm Resthöhe Gegen Säuren 26 bis 27 mm Resthöhe The following values were achieved with an impact of 200 J: Thermal aging Higher ambient temperature + 60 ° C 23 to 25 mm residual height Lower ambient temperature - 20 ° C 26 to 28 mm residual height Chemical aging Against fuel 26 to 27 mm residual height Against alkalis 27 to 28 mm residual height Against acids 26 to 27 mm residual height

In keinem Fall trat ein Materialbruch auf. In no case did material breakage occur.

Bei Messung der Druckfestigkeit 15 KN wurde eine Resthöhe von 21 mm nach zwei Tagen RT-Lagerung ermittelt.When measuring the compressive strength 15 KN, a residual height of 21 mm determined after two days of RT storage.

Claims (2)

Schutzschuh, Sicherheitsschuh bzw. -stiefel mit einer Zehenkappe aus Kunststoff, insbesondere Arbeitsschutzschuh, dadurch gekennzeichnet, daß die Zehenkappe aus einem Polycarbonatblend besteht.Protective shoe, safety shoe or boot with a plastic toe cap, in particular work safety shoe, characterized in that the toe cap consists of a polycarbonate blend. Schutzschuh, Sicherheitsschuh bzw. -stiefel nach Anspruch 1, dadurch gekennzeichnet, daß das Polycarbonatblend ein PC/ABS-Blend, ein PC/TPU-Blend, ein PC/PET-Blend oder insbesondere ein PC/PBT-Blend ist.Protective shoe, safety shoe or boot according to claim 1, characterized in that the polycarbonate blend is a PC / ABS blend, a PC / TPU blend, a PC / PET blend or in particular a PC / PBT blend.
EP02001651A 2001-03-24 2002-01-24 Protective shoe or boot Withdrawn EP1243191A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001114560 DE10114560A1 (en) 2001-03-24 2001-03-24 Protective shoe, safety shoe or boot
DE10114560 2001-03-24

Publications (1)

Publication Number Publication Date
EP1243191A1 true EP1243191A1 (en) 2002-09-25

Family

ID=7678905

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02001651A Withdrawn EP1243191A1 (en) 2001-03-24 2002-01-24 Protective shoe or boot

Country Status (2)

Country Link
EP (1) EP1243191A1 (en)
DE (1) DE10114560A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933122A (en) * 1994-08-31 1999-08-03 Siemens Aktiengesellschaft Antenna switch for wireless antenna diversity telecommunications devices with two antennas
CN107252158A (en) * 2017-08-04 2017-10-17 三六度童装有限公司 A kind of guard for preventing toe-cap from kicking damage and prevent toe-cap from kicking the shoes of damage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239313A2 (en) * 1986-03-25 1987-09-30 Haskon Corporation A protective toe cap for footwear
US5667857A (en) * 1991-04-03 1997-09-16 Nitto Boseki Co., Ltd. Toe puff for safety shoe
FR2748965A1 (en) * 1996-05-22 1997-11-28 Ykk Corp Composite material for toe protection within safety shoes
US5878511A (en) * 1997-09-19 1999-03-09 Krajcir; Dezi Toe and metatarsal protectors for safety footwear
EP1033231A2 (en) * 1999-02-22 2000-09-06 YKK Corporation Molding material containing reinforcing fibers, method for producing molded articles using same and safety shoe toe cap

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1284736A (en) * 1969-05-01 1972-08-09 Gkn Group Services Ltd Improvements in or relating to footwear
GB2050144B (en) * 1979-06-09 1983-03-16 Lsb Orthopaedics Ltd Reinforced toe caps
GB2138272B (en) * 1980-03-21 1985-05-01 Britton Limited G B Protective toe caps
FR2525443B1 (en) * 1982-04-23 1986-04-18 Agulhon Michel TOE FOR SAFETY SHOES
EP0100181A1 (en) * 1982-07-28 1984-02-08 Imperial Chemical Industries Plc Protective toe caps
FR2572259A1 (en) * 1984-10-25 1986-05-02 Sofrex Low-weight hard-toe safety shoe
DE3529999A1 (en) * 1985-08-22 1987-02-26 Bayer Ag INJECTED SHOE TOE MADE OF THERMOPLASTIC PLASTIC
GB2210771B (en) * 1987-10-13 1991-04-03 Dunlop Ltd Footwear reinforcement
JPH0542006A (en) * 1991-08-08 1993-02-23 Yoshida Kogyo Kk <Ykk> Method for manufacturing box toe for use in safety shoes
US5210963A (en) * 1991-11-26 1993-05-18 Harwood John M Molded plastic toe cap
JPH06245804A (en) * 1993-02-26 1994-09-06 Yoshida Kogyo Kk <Ykk> Tip core of safety shoe
EP0979165B1 (en) * 1997-04-30 2004-03-03 Jallatte S.A. Composite plastic material toe caps for security shoes, and fabrication process

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0239313A2 (en) * 1986-03-25 1987-09-30 Haskon Corporation A protective toe cap for footwear
US5667857A (en) * 1991-04-03 1997-09-16 Nitto Boseki Co., Ltd. Toe puff for safety shoe
FR2748965A1 (en) * 1996-05-22 1997-11-28 Ykk Corp Composite material for toe protection within safety shoes
US5878511A (en) * 1997-09-19 1999-03-09 Krajcir; Dezi Toe and metatarsal protectors for safety footwear
EP1033231A2 (en) * 1999-02-22 2000-09-06 YKK Corporation Molding material containing reinforcing fibers, method for producing molded articles using same and safety shoe toe cap

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5933122A (en) * 1994-08-31 1999-08-03 Siemens Aktiengesellschaft Antenna switch for wireless antenna diversity telecommunications devices with two antennas
CN107252158A (en) * 2017-08-04 2017-10-17 三六度童装有限公司 A kind of guard for preventing toe-cap from kicking damage and prevent toe-cap from kicking the shoes of damage
CN107252158B (en) * 2017-08-04 2019-09-03 三六一度童装有限公司 A kind of guard for preventing toe-cap from kicking damage and prevent toe-cap from kicking the shoes of damage

Also Published As

Publication number Publication date
DE10114560A1 (en) 2002-09-26

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