WO2004067118A1 - Revetement de ski en polyethylene comprenant un/des additif(s) - Google Patents

Revetement de ski en polyethylene comprenant un/des additif(s) Download PDF

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Publication number
WO2004067118A1
WO2004067118A1 PCT/AT2004/000014 AT2004000014W WO2004067118A1 WO 2004067118 A1 WO2004067118 A1 WO 2004067118A1 AT 2004000014 W AT2004000014 W AT 2004000014W WO 2004067118 A1 WO2004067118 A1 WO 2004067118A1
Authority
WO
WIPO (PCT)
Prior art keywords
ski
particles
polyethylene
additive
polyethylene coating
Prior art date
Application number
PCT/AT2004/000014
Other languages
German (de)
English (en)
Inventor
Klaus Krenn
Original Assignee
Isosport Verbundbauteile Gesellschaft M.B.H.
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 Isosport Verbundbauteile Gesellschaft M.B.H. filed Critical Isosport Verbundbauteile Gesellschaft M.B.H.
Publication of WO2004067118A1 publication Critical patent/WO2004067118A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C5/00—Skis or snowboards
    • A63C5/04—Structure of the surface thereof
    • A63C5/056—Materials for the running sole

Definitions

  • the invention relates to a polyethylene ski base with additives), a process for its production and ski guide devices having these.
  • polyethylene As a ski covering, since this meets the high requirements with regard to abrasion behavior, strength, toughness and sliding behavior on snow. These properties are at least partly due to the apolar character of polyethylene. Polyethylene ski coverings therefore show good water repellency and thus a low coefficient of sliding friction. These properties can be expressed by the so-called surface energy. The lower the value for the surface energy, the better the sliding behavior of the ski base on the snow.
  • the surface energy values of polyethylene are only undercut by fluoropolymers. However, fluoropolymers are extremely brittle, so that a surface made of fluoropolymers is difficult to process with conventional abrasives.
  • the present invention is therefore based on the object of specifying a ski covering of the type mentioned at the outset which, compared to known ski coverings, has improved sliding behavior on snow, but the requirements with regard to abrasion behavior, strength and toughness are to be met further.
  • this object is achieved using a polyethylene ski base with at least one additive, which is characterized in that the additive consists of particles with a diameter of 1-900 mm.
  • the additive consists of particles with a diameter of 1-900 mm.
  • the invention further relates to a method for producing the polyethylene ski covering according to the invention, which is characterized in that at least one additive, which consists of particles, is added to the polyethylene starting material prior to the processes known per se for producing the ski covering, such as screw extrusion, piston extrusion or press sinter with a diameter of 1-900 mm.
  • the invention further relates to ski guiding devices which have the polyethylene ski covering according to the invention.
  • the invention will now be explained in more detail on the basis of a possible embodiment of the invention:
  • high-density polyethylene HDPE
  • UHMW-PE ultra-high molecular weight polyethylene
  • the proportion of polyethylene in the ski base material is at least 80% by weight based on the 100% by weight ski base material.
  • These particles are abrasion-resistant materials such as silicates or polytetrafluoroethylene. Due to the extremely small diameter of these particles, they can advantageously be mixed with the polyethylene ski base material and are homogeneously distributed in it. Because of this homogeneous distribution due to the extremely small particle size, the wear and / or sliding behavior of the polyethylene ski covering is improved overall.
  • ski base material made of polyethylene, in particular graphite, carbon black or fluorine compounds as well as waxes and oils, the sliding behavior of the ski base on the
  • additives such as boron nitride, especially in relation to artificial snow, reduce the expected wear of the ski base material.
  • further plastics such as fluoropolymers, or fibers, such as carbon fibers and / or glass fibers, can be added.
  • additional pigments can be added to the ski covering material. Fluorescent pigments that reproduce the decor even in the dark are particularly preferred.
  • this mixture is fed, for example, to an extruder and processed into film webs at a temperature of about 300 ° C. These film webs are calibrated in a downstream calender. Then the calibrated film sheets are cut into the desired ski base or snowboard width. It is also possible to further process the mixture consisting of polyethylene ski base material and additives by sintering into ski bases. The powdered mixture is poured into a circular form and this is cold compressed at a pressure of around 100 bar. The rode is then cooled under pressure and at room temperature for about eight hours. This sintered blank is then further processed by peeling to the specified dimensions of a ski or snowboard.
  • a manufacturing process known per se can provide a highly abrasion-resistant ski base based on polyethylene, which additionally has an increased sliding behavior on the snow compared to known polyethylene base materials.
  • this Glei process is mainly produced by adding an additive in the form of nanoparticles, since these nanoparticles are distributed homogeneously within the ski base. This homogeneous distribution is created by the extremely small diameter size of the particles, namely in a range of 1-900 nm.
  • These particles are inert and can accordingly be mixed with other additives, such as graphite, carbon black, boron nitride, fluorine compounds, waxes, oils, plastics, fibers, or pigments, so that additional advantages of the ski base material according to the invention, such as a special fluorescent material Decor that can be created.

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  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un revêtement de ski en polyéthylène comprenant au moins un additif composé de particules de diamètre allant de 1 à 900 mm. Ce revêtement de ski, appelé également ≤nanocomposite≥, a une meilleure aptitude au glissement sur la neige que des matériaux d'enduction en polyéthylène connus. Ce comportement au glissement est obtenu, pour ledit matériau de revêtement de ski en polyéthylène, essentiellement par un additif sous forme de nanoparticules réparties de manière homogène dans le matériau, cette répartition homogène étant rendue possible par le diamètre de taille extrêmement faible des particules, notamment de 1 à 900 mm. Ces particules, de type particules de silicate, étant inertes, elles peuvent être mélangées à d'autres additifs tels que graphite, noir de carbone, nitrure de bore, composés fluorés, cires, huiles, matières plastiques, fibres ou pigments, afin de conférer au matériau de revêtement de ski de l'invention des avantages supplémentaires comme, par exemple, une décoration fluorescente spéciale.
PCT/AT2004/000014 2003-01-30 2004-01-20 Revetement de ski en polyethylene comprenant un/des additif(s) WO2004067118A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA140/2003 2003-01-30
AT1402003 2003-01-30

Publications (1)

Publication Number Publication Date
WO2004067118A1 true WO2004067118A1 (fr) 2004-08-12

Family

ID=32777513

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2004/000014 WO2004067118A1 (fr) 2003-01-30 2004-01-20 Revetement de ski en polyethylene comprenant un/des additif(s)

Country Status (1)

Country Link
WO (1) WO2004067118A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004015519A1 (de) * 2004-03-30 2005-10-27 Holmenkol Sport-Technologies Gmbh & Co. Kg Gleitmittelmodifikator zur Verbesserung der tribologischen Gleiteigenschaften von Wintersportgeräten auf Schnee
EP2353670A3 (fr) * 2010-02-05 2013-05-15 Zai AG Planche de surf sur neige

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660018A5 (en) * 1984-03-08 1987-03-13 Ims Kunststoff Ag Ski wax
CH666193A5 (en) * 1986-02-14 1988-07-15 Ims Kunststoff Ag Coating for ski running surface of sintered ldpe and finer additive - giving high ratio of static to kinetic friction, useful for nordic ski
EP0303055A1 (fr) * 1987-07-28 1989-02-15 BRICO S.r.l. Composition lubrifiante à bas coéfficient de friction pour semelles de skis, de traineaux et autres objets similaires
US6063739A (en) * 1998-05-18 2000-05-16 Ins Kunststoff Ag Plastic ski coating

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH660018A5 (en) * 1984-03-08 1987-03-13 Ims Kunststoff Ag Ski wax
CH666193A5 (en) * 1986-02-14 1988-07-15 Ims Kunststoff Ag Coating for ski running surface of sintered ldpe and finer additive - giving high ratio of static to kinetic friction, useful for nordic ski
EP0303055A1 (fr) * 1987-07-28 1989-02-15 BRICO S.r.l. Composition lubrifiante à bas coéfficient de friction pour semelles de skis, de traineaux et autres objets similaires
US6063739A (en) * 1998-05-18 2000-05-16 Ins Kunststoff Ag Plastic ski coating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004015519A1 (de) * 2004-03-30 2005-10-27 Holmenkol Sport-Technologies Gmbh & Co. Kg Gleitmittelmodifikator zur Verbesserung der tribologischen Gleiteigenschaften von Wintersportgeräten auf Schnee
EP2353670A3 (fr) * 2010-02-05 2013-05-15 Zai AG Planche de surf sur neige

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