WO1991018651A1 - Low friction surface for sport or play - Google Patents

Low friction surface for sport or play Download PDF

Info

Publication number
WO1991018651A1
WO1991018651A1 PCT/SE1991/000322 SE9100322W WO9118651A1 WO 1991018651 A1 WO1991018651 A1 WO 1991018651A1 SE 9100322 W SE9100322 W SE 9100322W WO 9118651 A1 WO9118651 A1 WO 9118651A1
Authority
WO
WIPO (PCT)
Prior art keywords
slide according
waxes
slide
hardwax
wax
Prior art date
Application number
PCT/SE1991/000322
Other languages
French (fr)
Inventor
Clifford ÖHMAN
Original Assignee
Oehman Clifford
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 Oehman Clifford filed Critical Oehman Clifford
Publication of WO1991018651A1 publication Critical patent/WO1991018651A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C13/00—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds
    • E01C13/10—Pavings or foundations specially adapted for playgrounds or sports grounds; Drainage, irrigation or heating of sports grounds for artificial surfaces for outdoor or indoor practice of snow or ice sports
    • E01C13/107—Non-frozen surfacings for ice, skating or curling rinks or for sledge runs; Rinks or runs with such surfacings
    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
    • A63C19/00—Design or layout of playing courts, rinks, bowling greens or areas for water-skiing; Covers therefor
    • A63C19/10—Ice-skating or roller-skating rinks; Slopes or trails for skiing, ski-jumping or tobogganing
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes

Definitions

  • the present invention relates to slides for sport or play, for example for skating or other activity requiring low friction so as to facilitate sliding or gliding.
  • cooling equipment uses cooling media containing ammonia and water containing salts.
  • the ammonia 0 will have to be replaced at frequent intervals and the waste is considered as an environmental hazard and must be especially treated according to the environmental laws.
  • the present invention has for an object to provide slides for sport and play which involve essentially re ⁇ quiz investment and operational costs and furthermore are 5 capable of operation within a much broader temperature range.
  • Another object of the invention is to provide sli- ;7 aes Mhioh are eas y to restore «* t h e action coe ffi c--ent and surface hardness of which can be modified according to the activity involved.
  • the invention provides for a slide for sport or play which is characterized in that the exposed slide surface thereof is built up from a natural and/or synthetic hardwax.
  • the slide according to the invention does not require energy consuming cooling and the surface may thus have the environmental temperature which can vary between wide limits, for example from -20°C to +40°C.
  • the surface of the slide has suitably a hardness of from about 2 to 20 measured using needle penetration according to Din 51579 or Norm ASTM 1321 at +20°C.
  • the hard has a melting point of from about 80 to about 160°C, especially about 80 to about 105°C.
  • a multitude of waxes are useful in the invention, and a suitable wax can be selected among technique waxes, mic- rowaxes, synthetic waxes, such as polyethylene waxes and paraffin waxes. The mentioned waxes are particularly pre ⁇ ferred.
  • a polymer material for the purpose of increasing the homogeneity of binding and also to increase the hardness of the surface of the slide it is preferred to mix into the wax a polymer material in an amount of up to about 30% by weight based on the total weight.
  • Such polymer material is suitably in the form of powders, granulates or dust, and useful types of materials are polyethylene, polypropylene, PVC, poly- tetrafluoroethylene (PTFE), nylon and the like.
  • the viscosity of the wax at 100°C is from about 12 to about 20 centiStoke (cSt). It may also be suitable to add to the wax stabilizing addi ⁇ tives, such as UV-stabilizers, anti-oxidants etc. Such additives are of a conventional kind and do not require further detailed description.
  • a material which con ⁇ tains wax as a major component.
  • major component is meant that the wax component of the compo ⁇ sition exceeds about 50% by weight and that it may con ⁇ stitute the sole wax component in the composition.
  • the advantages associated with the slide according to the present invention is the fact that the surface thereof may be easily restored by using equipment that is passed across the surface with heating to melt the uppermost sur ⁇ face layer of the slide.
  • the slide according to the inven ⁇ tion can also be used anywhere and thus also in countries having a high round-the-year temperature.
  • the slide according to the present invention has a versatile use and can be used i.a. as a slide for hockey, bandy, curling, and as minor playgrounds for skating.
  • the slide according to the invention can be used also for cross-country skating, as slides for sliding, bob sleigh- ing etc.
  • a hard wax where the coefficient of expansion from solid to liquid form is as close to zero as possible, in order that possible cracking in the restoration of the surface by melting of the surface layer shall be elimi ⁇ nated.
  • the waxes are mixed and molten at a temperature of about 120°C.
  • the polymers are then added while stirring and the temperature is increased to about 150°C. Stirring is maintained for at least 10 min.
  • the molten mixture is poured into a suitable mold for soli ⁇ dification.
  • the total quantity of ingredients is 280 g.
  • UV-stabilizer and antioxidant can be added to the composition.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Cosmetics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Slide for sport or play, for example for skating or other activity requiring low friction, its exposed surface being built up from a natural and/or synthetic hard wax capable of remelting for restoring the surface after use.

Description

LOW FRICTION SURFACE FOR SPORT OR PLAY
The present invention relates to slides for sport or play, for example for skating or other activity requiring low friction so as to facilitate sliding or gliding.
Presently sport or play activities requiring a low friction support, for example skating, takes place on artificial skating grounds or on natural ice. Artificial ice grounds involve high investment costs, and solely the 0 cooling plant for a conventional ice ground amounts pre¬ sently to several million SEK. To this comes high opera¬ tional costs which for cooling only are estimated to about half a million SEK per year. An artificial skating ground is furthermore restricted to a specific geographic loca- 5 tion and is thus useful only at the site where the cooling tubes are cast into the support.
Another inconvenience with artificial ice grounds is the fact that the cooling equipment uses cooling media containing ammonia and water containing salts. The ammonia 0 will have to be replaced at frequent intervals and the waste is considered as an environmental hazard and must be especially treated according to the environmental laws.
Furthermore, the usefulness of today's artificial ice grounds is very limited. When the outdoor temperature ex- 5 ceeds about 10°C artificial ice grounds function only in¬ doors within an enclosure. This, however, results in very high operational costs. In practice an iceground can be used only if the surface of the ice has a temperature of between about -1°C and -20°C. In countries having a high 0 average temperature skating is virtually impossible to practice.
The present invention has for an object to provide slides for sport and play which involve essentially re¬ duced investment and operational costs and furthermore are 5 capable of operation within a much broader temperature range. Another object of the invention is to provide sli- ;7aes Mhioh are easy to restore «* the action coeffic--ent and surface hardness of which can be modified according to the activity involved.
For these and other objects which will be clear from the following description the invention provides for a slide for sport or play which is characterized in that the exposed slide surface thereof is built up from a natural and/or synthetic hardwax. Thus, the slide according to the invention does not require energy consuming cooling and the surface may thus have the environmental temperature which can vary between wide limits, for example from -20°C to +40°C. In this manner it is possible to avoid the in¬ convenience caused by a cold ice surface in the form of the chill that the sport practitioners are subjected to. The surface of the slide has suitably a hardness of from about 2 to 20 measured using needle penetration according to Din 51579 or Norm ASTM 1321 at +20°C.
In a preferred embodiment of the invention the hard was has a melting point of from about 80 to about 160°C, especially about 80 to about 105°C. A multitude of waxes are useful in the invention, and a suitable wax can be selected among technique waxes, mic- rowaxes, synthetic waxes, such as polyethylene waxes and paraffin waxes. The mentioned waxes are particularly pre¬ ferred. For the purpose of increasing the homogeneity of binding and also to increase the hardness of the surface of the slide it is preferred to mix into the wax a polymer material in an amount of up to about 30% by weight based on the total weight. Such polymer material is suitably in the form of powders, granulates or dust, and useful types of materials are polyethylene, polypropylene, PVC, poly- tetrafluoroethylene (PTFE), nylon and the like.
It is preferred that the viscosity of the wax at 100°C is from about 12 to about 20 centiStoke (cSt). It may also be suitable to add to the wax stabilizing addi¬ tives, such as UV-stabilizers, anti-oxidants etc. Such additives are of a conventional kind and do not require further detailed description.
As previously mentioned it is particularly preferred to use in the hardwax composition a material which con¬ tains wax as a major component. By the expression "major component" is meant that the wax component of the compo¬ sition exceeds about 50% by weight and that it may con¬ stitute the sole wax component in the composition.
The advantages associated with the slide according to the present invention is the fact that the surface thereof may be easily restored by using equipment that is passed across the surface with heating to melt the uppermost sur¬ face layer of the slide. The slide according to the inven¬ tion can also be used anywhere and thus also in countries having a high round-the-year temperature. The slide according to the present invention has a versatile use and can be used i.a. as a slide for hockey, bandy, curling, and as minor playgrounds for skating. The slide according to the invention can be used also for cross-country skating, as slides for sliding, bob sleigh- ing etc.
It is preferred to use in the slide according to the invention a hard wax where the coefficient of expansion from solid to liquid form is as close to zero as possible, in order that possible cracking in the restoration of the surface by melting of the surface layer shall be elimi¬ nated.
The invention will now be further described by exem¬ plifying embodiments, but it should be noted that the in¬ vention is not limited to these specific embodiments and that its scope is defined only in the appended patent claims.
EXAMPLE
Three types of waxes and two types of polymers are• resent in the composition. The waxes are mixed and molten at a temperature of about 120°C. The polymers are then added while stirring and the temperature is increased to about 150°C. Stirring is maintained for at least 10 min. The molten mixture is poured into a suitable mold for soli¬ dification. The total quantity of ingredients is 280 g.
INGREDIENTS: Waxes
1. Polyethylene wax 80 g
Manufacturer: Dussek Campell, England or Germany Manufacturing No: Techniwax 9591 Melting point: ASTM D 127 about 116°C Penetration at 25°C ASTM D 1321 about 2 Viscosity at 150°C ASTM D 3236 20-40 mPas
2. Synthetic wax 80 g Manufacturer: TerHell Paraffin, Germany Manufacturing No: Syntetervax 2010
Figure imgf000006_0001
3. Special wax 80 g
Manufacturer: Terhell Paraffin, Germany Manufacturing No: THP 7040
Melting point about 72°C Penetration at 25°C ASTM D 1321 about 13 Viscosity at 100°C ASTM D 445 about 6
Polymers
4. Polyethylene powder 20 g Manufacturer: NESTE Oy Chemicals, Finland Manufacturing No: NCPE 8683
Meltindex Ml2 g/10 min ISO 1133 Cond 4 4.0 Density kg/m3 ASTM D 1928 C/D 1505 924
5. Polyethylene powder 20 g
Manufacturer: NESTE Oy Chemicals, Finland Manufacturing No: NCPE 8645 Meltindex Ml2 g/10 min ISO 1133 Cond 4 8.0 Density kg/m3 ASTM D 1928 C/D 1505 935
If required UV-stabilizer and antioxidant can be added to the composition.

Claims

1. Slide for sport or play, for example for skating or other activity requiring low friction, characterized in that its exposed surface is built up from a natural and/or synthetic hard wax capable of remelting for restoring the surface after use.
2. Slide according to claim 1, characterized in that the surface has a hardness of about 2-20 measured with needle penetration according to Din 51579 or Norm ASTM 1321 at +20°C.
3. Slide according to claim 1 or 2, characterized in that the hardwax has a melting point of from about 80 to about 160°C, particularly about 80 to about 105°C.
4. Slide according to any preceding claim, characte¬ rized in that the wax is selected from technique waxes, microwaxes, synthetic waxes, such as polyethylene waxes, and paraffin waxes.
5. Slide according to claim 4, characterized in that the hardwax as a predominant constituent contains waxes.
6. Slide according to any preceding claim, characte¬ rized in that the hardwax contains a polymer material in an amount of up to about 30% by weight based on the total composition.
7. Slide according to claim 6, characterized in that the polymer material is selected from powders, granulates or dust of polyethylene, polypropylene, PVC, PTFE, nylon or the like.
8. Slide according to any preceding claim, characte- rized in that the viscosity of the wax at 100°C is about
12-20 cSt.
9. Slide according to any preceding claim, characte¬ rized in that the hardwax contains stabilizing additives, such as UV-stabilizers, antioxidants etc.
PCT/SE1991/000322 1990-05-30 1991-05-06 Low friction surface for sport or play WO1991018651A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9001937-3 1990-05-30
SE9001937A SE9001937D0 (en) 1990-05-30 1990-05-30 HAIR SURFACE RANGE OF PARAFFIN WAX

Publications (1)

Publication Number Publication Date
WO1991018651A1 true WO1991018651A1 (en) 1991-12-12

Family

ID=20379630

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1991/000322 WO1991018651A1 (en) 1990-05-30 1991-05-06 Low friction surface for sport or play

Country Status (3)

Country Link
AU (1) AU7966891A (en)
SE (1) SE9001937D0 (en)
WO (1) WO1991018651A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014268A1 (en) * 1992-01-21 1993-07-22 Skitech S.R.L. Pavement for sliding sports
WO1994001186A1 (en) * 1992-07-09 1994-01-20 Oehman Clifford Slide
CN102505607A (en) * 2011-11-13 2012-06-20 初慧民 Manufacturing method for paraffin skating rink

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726817A (en) * 1971-11-03 1973-04-10 D Niswonger Surface coating compositions comprising polyester resin,wax and flock and coatings thereof
DE3445976A1 (en) * 1984-04-02 1985-10-10 Paolo Rom Marini Skating rink, and process for the production thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3726817A (en) * 1971-11-03 1973-04-10 D Niswonger Surface coating compositions comprising polyester resin,wax and flock and coatings thereof
DE3445976A1 (en) * 1984-04-02 1985-10-10 Paolo Rom Marini Skating rink, and process for the production thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014268A1 (en) * 1992-01-21 1993-07-22 Skitech S.R.L. Pavement for sliding sports
WO1994001186A1 (en) * 1992-07-09 1994-01-20 Oehman Clifford Slide
CN102505607A (en) * 2011-11-13 2012-06-20 初慧民 Manufacturing method for paraffin skating rink

Also Published As

Publication number Publication date
SE9001937D0 (en) 1990-05-30
AU7966891A (en) 1991-12-31

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