EP1053768B1 - Plastic ski-sole coating - Google Patents

Plastic ski-sole coating Download PDF

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Publication number
EP1053768B1
EP1053768B1 EP99109681A EP99109681A EP1053768B1 EP 1053768 B1 EP1053768 B1 EP 1053768B1 EP 99109681 A EP99109681 A EP 99109681A EP 99109681 A EP99109681 A EP 99109681A EP 1053768 B1 EP1053768 B1 EP 1053768B1
Authority
EP
European Patent Office
Prior art keywords
plastic
coating according
filling material
ski coating
boron
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
EP99109681A
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German (de)
French (fr)
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EP1053768A1 (en
Inventor
Urs Geissbühler
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.)
Gurit Ittigen AG
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Gurit Ittigen AG
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 Gurit Ittigen AG filed Critical Gurit Ittigen AG
Priority to AT99109681T priority Critical patent/ATE255455T1/en
Priority to EP99109681A priority patent/EP1053768B1/en
Priority to DE59907937T priority patent/DE59907937D1/en
Priority to US09/571,323 priority patent/US6333376B1/en
Publication of EP1053768A1 publication Critical patent/EP1053768A1/en
Application granted granted Critical
Publication of EP1053768B1 publication Critical patent/EP1053768B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 plastic ski base with a particulate that improves the sliding properties Of filler.
  • Polymers are preferred for plastic ski coverings used with a hydrophobic character, such as Polyethylene.
  • tread materials C-modified PE with regard to sliding speed has in the past few years has made them the largest Make up part of the ski base used in ski construction.
  • This Ski coverings contain the filler additive carbon in a relatively large amount. Due to the inherent color of carbon in the soot and graphite modifications these fast-moving ski toppings have a black color on.
  • EP-A-0 538 185 also describes a ski covering with filler, among others with aluminum powder and / or with graphite.
  • the object of the invention is a Specify filler additive to the ski base for the desired Sliding properties in a significantly smaller amount can be added as the usual carbon and with which can be avoided from blackening, so that the Ski surface if desired by adding suitable Colorants can be colored.
  • the plastic ski covering according to the invention, with to whom the task is solved is characterized by that the filler additive is at least one of the following Substances contain: boron, at least one boron compound, at least a nitride.
  • the filler additive can suitably be used as the nitride Contain aluminum nitride.
  • the filler additive boron nitride can be used as the boron compound contain.
  • the Filler additive thus at least one of the following Fabrics: boron, boron nitride, aluminum nitride.
  • the filler additive can also Contain carbon in the form of carbon black and / or graphite.
  • the amount of filler added is Rule 0.2 to 20, preferably 0.5 to 3, parts by weight per 100 parts by weight of plastic.
  • the plastic used can expediently be ultra-high-molecular low-pressure polyethylene with a molecular weight of 4 to 12 ⁇ 10 6 g / mol, which is processed in the press-sintering process, or low-pressure polyethylene with a molecular weight of 200,000 to 600,000 g / mol, which is processed in the extrusion process ,
  • ski base can not only be used in the Press sintering process with subsequent peeling, but also produced, for example, in the extrusion process become.
  • the admixture is essential for the invention of the filler additive mentioned at the beginning.
  • Example 1 96 parts by weight of "Hostalen GUR” 4170 with a molecular weight of 10.5 x 10 6 are processed with 4 parts by weight of aluminum nitride powder (specific surface area 1.2 m 2 / g) as described in Example 1 to form a ski base.
  • the covering has a greyish, homogeneous color.

Abstract

A plastic ski coating with a particulate filler to improve the sliding properties, in which the filler contains boron and/or boron compound(s) and/or nitride(s).

Description

Die Erfindung betrifft einen Kunststoff-Skibelag mit einem die Gleiteigenschaften verbessernden, teilchenförmigen Füllstoffzusatz.The invention relates to a plastic ski base with a particulate that improves the sliding properties Of filler.

Für Kunststoff-Skibeläge werden bevorzugt Polymere mit hydrophobem Charakter eingesetzt, wie zum Beispiel Polyethylen.Polymers are preferred for plastic ski coverings used with a hydrophobic character, such as Polyethylene.

Der Gleitmechanismus auf Schnee und Eis mit Skiern, zu denen hier auch "Snowboards" gerechnet werden, ist ein komplexer Vorgang und nicht in allen Einzelheiten bekannt. Man geht heute immerhin davon aus, dass Rauhigkeitsspitzen der Lauffläche mit den Schneekristallen in Kontakt treten und die dabei erzeugte Reibungswärme zu deren Schmelzen führt. Das dabei lokal zwischen Lauffläche und Schnee erzeugte Wasser führt zu hydrodynamischen Schmierverhältnissen, wodurch sich die beim Skilaufen gemessenen niedrigen kinetischen Reibungskoeffizienten von etwa 0,02 bis 0,05 erklären lassen. Die bei Festkörperreibung ohne hydrodynamische Schmierung gemessenen kinetischen Reibungskoeffizienten liegen etwa 10 mal höher.The sliding mechanism on snow and ice with Skis, which also include "snowboards", is a complex process and not in every detail known. At least today it is assumed that roughness peaks the tread with the snow crystals in Make contact and the resulting frictional heat whose melting leads. The local between the tread and snow generated water leads to hydrodynamic Lubrication conditions, which affects the skiing measured low kinetic coefficient of friction of have about 0.02 to 0.05 explained. The one with solid friction kinetic measured without hydrodynamic lubrication Friction coefficients are about 10 times higher.

Weiterhin hat sich gezeigt, dass bei höheren Geschwindigkeiten das lokal gebildete Schmelzwasser die Tendenz hat, sich über die ganze Lauffläche auszubreiten, was zu einem unerwünschten, die Gleitgeschwindigkeit negativ beeinflussenden "Saugeffekt" führt. Durch Beimischungen von Materialien, wie zum Beispiel Kohlenstoff in den Modifikationen Russ und/oder Graphit, die gegenüber der nicht modifizierten Polyethylenmatrix höhere Wärmeleitfähigkeiten aufweisen, kann dieser negative "Saugeffekt" verhindert oder reduziert werden (vgl. z.B. CH-A-657993 oder CH-A-660018).It has also been shown that at higher speeds the locally formed meltwater Tends to spread across the entire tread, resulting in an undesirable sliding speed negatively influencing "suction effect" leads. Through admixtures of materials such as carbon in the soot and / or graphite modifications opposite the unmodified polyethylene matrix has higher thermal conductivities this negative "suction effect" prevented or reduced (see e.g. CH-A-657993 or CH-A-660018).

Die Ueberlegenheit von Laufflächenmaterialien aus C-modifiziertem PE bezüglich Gleitgeschwindigkeit hat in den letzten Jahren dazu geführt, dass sie den grössten Teil der im Skibau eingesetzten Skibeläge ausmachen. Diese Skibeläge enthalten den Füllstoffzusatz Kohlenstoff in einer relativ grossen Menge. Bedingt durch die Eigenfarbe von Kohlenstoff in den Modifikationen Russ und Graphit weisen diese gleitschnellen Skibeläge eine schwarze Farbe auf. In EP-A-0 538 185 wird ebenfalls ein Skibelag mit Füllstoff beschrieben, unter anderen mit Aluminiumpulver und/oder mit Grafit.The superiority of tread materials C-modified PE with regard to sliding speed has in the past few years has made them the largest Make up part of the ski base used in ski construction. This Ski coverings contain the filler additive carbon in a relatively large amount. Due to the inherent color of carbon in the soot and graphite modifications these fast-moving ski toppings have a black color on. EP-A-0 538 185 also describes a ski covering with filler, among others with aluminum powder and / or with graphite.

Die Aufgabe der Erfindung besteht darin, einen Füllstoffzusatz anzugeben, der zu dem Skibelag für die gewünschten Gleiteigenschaften in deutlich geringerer Menge zugegeben werden kann als der übliche Kohlenstoff und mit dem die Schwarzfärbung vermieden werden kann, so dass der Skibelag gewünschtenfalls durch Zugabe von geeigneten Farbmitteln farblich gestaltet werden kann.The object of the invention is a Specify filler additive to the ski base for the desired Sliding properties in a significantly smaller amount can be added as the usual carbon and with which can be avoided from blackening, so that the Ski surface if desired by adding suitable Colorants can be colored.

Der erfindungsgemässe Kunststoff-Skibelag, mit dem die Aufgabe gelöst wird, ist dadurch gekennzeichnet, dass der Füllstoffzusatz wenigstens einen der folgenden Stoffe enthält: Bor, wenigstens eine Borverbindung, wenigstens ein Nitrid.The plastic ski covering according to the invention, with to whom the task is solved is characterized by that the filler additive is at least one of the following Substances contain: boron, at least one boron compound, at least a nitride.

Als Nitrid kann der Füllstoffzusatz zweckmässig Aluminiumnitrid enthalten.The filler additive can suitably be used as the nitride Contain aluminum nitride.

Als Borverbindung kann der Füllstoffzusatz Bornitrid enthalten.The filler additive boron nitride can be used as the boron compound contain.

In der bevorzugten Ausführungsform enthält der Füllstoffzusatz somit wenigstens einen der folgenden Stoffe: Bor, Bornitrid, Aluminiumnitrid.In the preferred embodiment, the Filler additive thus at least one of the following Fabrics: boron, boron nitride, aluminum nitride.

Der Füllstoffzusatz kann zusätzlich auch noch Kohlenstoff in der Form von Russ und/oder Graphit enthalten.The filler additive can also Contain carbon in the form of carbon black and / or graphite.

Die Menge des Füllstoffzusatzes beträgt in der Regel 0,2 bis 20, vorzugsweise 0,5 bis 3, Gewichtsteile auf 100 Gewichtsteile Kunststoff.The amount of filler added is Rule 0.2 to 20, preferably 0.5 to 3, parts by weight per 100 parts by weight of plastic.

Der verwendete Kunststoff kann zweckmässig ultrahochmolekulares Niederdruckpolyethylen mit einer Molmasse von 4 bis 12 x 106 g/mol sein, welches im Press-Sinterverfahren verarbeitet wird, oder Niederdruckpolyethylen mit einer Molmasse von 200 000 bis 600 000 g/mol, welches im Extrusionsverfahren verarbeitet wird.The plastic used can expediently be ultra-high-molecular low-pressure polyethylene with a molecular weight of 4 to 12 × 10 6 g / mol, which is processed in the press-sintering process, or low-pressure polyethylene with a molecular weight of 200,000 to 600,000 g / mol, which is processed in the extrusion process ,

Beispiel 1example 1

95 Gewichtsteile ultrahochmolekulares Niederdruckpolyethylen "Hostalen GUR" 4120 mit einer Molmasse 5 x 106 werden mit 5 Gewichtsteilen Bor mit einer Korngrösse von ca. 10 µm in einem Mischer 15 Minuten lang innig gemischt und danach in einer zylindrischen Pressform unter bekannten wärme- und Druckverhältnissen (wie z.B. in der Broschüre von Hoechst zu deren Niederdruckpolyethylen "Hostalen GUR" [Broschüre HRK112-7089C12299/14] angegeben) zu einem homogenen zylindrischen Sinterkörper pressgesintert. Nach dem Abkühlen wird vom zylindrischen Sinterkörper ein zusammenhängendes Band in der gewünschten Dicke des Skibelages von z.B 1,3 mm abgeschält. Der Skibelag ist homogen braun gefärbt. Er wird danach in bekannter Art und Weise auf einer Seite mit einem Schleifband aufgerauht und durch eine oxidierende Gas/Luft-Flamme für die Verklebung auf den Skikörper vorbereitet.95 parts by weight of ultra-high-molecular low-pressure polyethylene "Hostalen GUR" 4120 with a molar mass of 5 x 10 6 are intimately mixed with 5 parts by weight of boron with a particle size of approx. 10 µm in a mixer for 15 minutes and then in a cylindrical press mold under known heat and pressure conditions ( as for example given in the brochure by Hoechst on their low-pressure polyethylene "Hostalen GUR" [brochure HRK112-7089C12299 / 14]) press-sintered into a homogeneous cylindrical sintered body. After cooling, a coherent band is peeled off from the cylindrical sintered body in the desired thickness of the ski covering, for example 1.3 mm. The ski base is colored homogeneously brown. It is then roughened in a known manner on one side with an abrasive belt and prepared for bonding to the ski body by an oxidizing gas / air flame.

Selbstverständlich kann der Skibelag nicht nur im Presssinterverfahren mit anschliessendem Schälen, sondern auch zum Beispiel im Extrusionsverfahren, hergestellt werden. Wesentlich für die Erfindung ist die Beimengung des eingangs erwähnten Füllstoffzusatzes.Of course, the ski base can not only be used in the Press sintering process with subsequent peeling, but also produced, for example, in the extrusion process become. The admixture is essential for the invention of the filler additive mentioned at the beginning.

Beispiel 2Example 2

99 Teile "Hostalen GUR" 4120 werden mit 1 Gewichtsteil Bornitridpulver (spezifische Oberfläche 6,3 m2/g) wie im Beispiel 1 beschrieben zu einem Skibelag verarbeitet. Der Belag ist homogen weiss.99 parts of "Hostalen GUR" 4120 are processed with 1 part by weight of boron nitride powder (specific surface 6.3 m 2 / g) as described in Example 1 to form a ski base. The covering is homogeneous white.

Beispiel 3Example 3

96 Gewichtsteile "Hostalen GUR" 4170 mit einer Molmasse von 10,5 x 106 werden mit 4 Gewichtsteilen Aluminiumnitridpulver (spezifische Oberfläche 1,2 m2/g) wie im Beispiel 1 beschrieben zu einem Skibelag verarbeitet. Der Belag weist eine gräuliche, homogene Farbe auf.96 parts by weight of "Hostalen GUR" 4170 with a molecular weight of 10.5 x 10 6 are processed with 4 parts by weight of aluminum nitride powder (specific surface area 1.2 m 2 / g) as described in Example 1 to form a ski base. The covering has a greyish, homogeneous color.

Vergleichsbeispiel A (nicht erfindungsgemäss) Comparative Example A (not according to the invention)

In Analogie zum Beispiel 1 werden 100 Gewichtsteile "Hostalen GUR" 4120 ohne Füllstoffzusatz zu einem Skibelag verarbeitet. Der Belag ist milchig weiss und transluzent.In analogy to Example 1, 100 parts by weight "Hostalen GUR" 4120 without adding filler to one Ski covering processed. The topping is milky white and translucent.

Vergleichsbeispiel B (nicht erfindungsgemäss) Comparative Example B (not according to the invention)

In Analogie zum Beispiel 1 werden 85 Gewichtsteile "Hostalen GUR" 4120 mit 15 Gewichtsteilen Russ (Teilchengrösse 20 nm) vermischt und wie beschrieben zu einem Skibelag verarbeitet. In analogy to Example 1, 85 parts by weight "Hostalen GUR" 4120 with 15 parts by weight of Russ (Particle size 20 nm) and mixed as described processed a ski base.

Messresultate:Measuring results:

Eine Teststrecke wurde mit konstruktiv identischen Skiern, die sich durch den verwendeten Belag unterschieden, mit einer mittleren Geschwindigkeit von 100 km/h durchfahren und die dafür benötigte Zeit mittels elektronischer Zeitmessung erfasst. Auf Altschnee mit einer Temperatur von -1,3 °C, bei Lufttemperaturen von -1 bis +2 °C und Luftfeuchtigkeiten von 58 bis 64 % wurden folgende Zeiten gemessen: Lauffläche nach Beispiel Zusammensetzung der Lauffläche [Gew.-Teile] Gemessene Zeit 1 PE [95] 17,014 sec B [5] 2 PE [99] 16,981 sec BN [1] 3 PE [96] 16,968 sec AlN [4] A PE [100] 17,795 sec B PE [85] 16,963 sec C [15] A test route was run with identical skis, which differed by the surface used, at an average speed of 100 km / h and the time required for this was recorded using electronic time measurement. The following times were measured on old snow with a temperature of -1.3 ° C, air temperatures from -1 to +2 ° C and air humidity of 58 to 64%: Tread according to the example Tread composition [parts by weight] Measured time 1 PE [95] 17.014 sec B [5] 2 PE [99] 16.981 sec BN [1] 3 PE [96] 16.968 sec AlN [4] A PE [100] 17.795 sec B PE [85] 16.963 sec C [15]

Es zeigt sich also, dass mit den erfindungsgemässen Skibelägen gemäss Beispiel 1, 2 oder 3 gegenüber einem Skibelag ohne Füllstoffzusatz (Vergleichsbeispiel A) eine ähnliche Verbesserung der Gleiteigenschaften erreicht wird wie mit einem Skibelag mit Russzusatz (gemäss Vergleichsbeispiel B), wobei jedoch die Füllstoffzusatzmengen in den erfindungsgemässen Skibelägen deutlich kleiner sind und wobei die Schwarzfärbung vermieden wird.It turns out that with the inventive Ski coverings according to example 1, 2 or 3 compared to one Ski covering without filler additive (comparative example A) similar improvement in sliding properties is achieved as with a ski base with soot additive (according to the comparative example B), however, the amounts of filler added in the ski coverings according to the invention are significantly smaller and avoiding blackening.

Claims (10)

  1. A plastic ski coating with a particle-like filling material addition improving the sliding properties, characterised in that the filling material addition contains at least one of the following substances: boron, at least one boron compound, at least one nitride.
  2. A plastic ski coating according to claim 1, characterised in that the filling material addition additionally contains carbon.
  3. A plastic ski coating according to claim 1 or 2, characterised in that the filling material addition as a nitride contains aluminium nitride.
  4. A plastic ski coating according to one of the claims 1 to 3, characterised in that the filling material as a boron compound contains boron nitride.
  5. A plastic ski coating according to claim 1 or 2, characterised in that the filling material addition contains at least one of the following materials: boron, boron nitride, aluminium nitride.
  6. A plastic ski coating according to one of the claims 1 to 5, characterised in that for 100 parts by weight of plastic it contains 0.2 to 20, preferably 0.5 to 3 parts by weight of filling material addition.
  7. A plastic ski coating according to one of the claims 1 to 6, characterised in that the plastic is a press-sintered plastic powder or plastic granulate.
  8. A plastic ski coating according to one of the claims 1 to 7, characterised in that the plastic is polyethylene, preferably low-pressure polyethylene.
  9. A plastic ski coating according to claim 8, characterised in that the plastic is a low-pressure polyethylene with a molar mass of 4 to 12 x106 g/mol.
  10. A plastic ski coating according to one of the claims 1 to 6, characterised in that the plastic is extruded low-pressure polyethylene with a molar mass of 0.2 to 0.6 x 106 g/mol.
EP99109681A 1999-05-17 1999-05-17 Plastic ski-sole coating Expired - Lifetime EP1053768B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AT99109681T ATE255455T1 (en) 1999-05-17 1999-05-17 PLASTIC SKI BASE
EP99109681A EP1053768B1 (en) 1999-05-17 1999-05-17 Plastic ski-sole coating
DE59907937T DE59907937D1 (en) 1999-05-17 1999-05-17 A plastic ski coating
US09/571,323 US6333376B1 (en) 1999-05-17 2000-05-15 Plastic ski coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP99109681A EP1053768B1 (en) 1999-05-17 1999-05-17 Plastic ski-sole coating

Publications (2)

Publication Number Publication Date
EP1053768A1 EP1053768A1 (en) 2000-11-22
EP1053768B1 true EP1053768B1 (en) 2003-12-03

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ID=8238190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99109681A Expired - Lifetime EP1053768B1 (en) 1999-05-17 1999-05-17 Plastic ski-sole coating

Country Status (4)

Country Link
US (1) US6333376B1 (en)
EP (1) EP1053768B1 (en)
AT (1) ATE255455T1 (en)
DE (1) DE59907937D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008006512U1 (en) 2008-05-13 2009-09-24 Cps Gmbh Base Repair

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409339B (en) * 2000-02-02 2002-07-25 Isosport Verbundbauteile SKI COATING WITH DRY LUBE EFFECT
DE502004001734D1 (en) 2004-07-02 2006-11-23 Ims Kunststoff Ag Tread for a winter sports equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH66193A (en) * 1913-08-04 1914-08-17 M B H Brockdorff Witzenmann Electric warm, resp. Hot water or steam generator
CH657993A5 (en) 1983-01-14 1986-10-15 Ims Kunststoff Ag Covering for the running surface of a ski
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
US5272199A (en) * 1991-10-18 1993-12-21 Ims Kunststoff Ag Ski coating and filler for a coating
US5409622A (en) * 1994-02-07 1995-04-25 Orpac, Inc. Surface lubricant for objects contacting forms of water and method of preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202008006512U1 (en) 2008-05-13 2009-09-24 Cps Gmbh Base Repair

Also Published As

Publication number Publication date
ATE255455T1 (en) 2003-12-15
EP1053768A1 (en) 2000-11-22
US6333376B1 (en) 2001-12-25
DE59907937D1 (en) 2004-01-15

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