CA2137664A1 - Slide - Google Patents
SlideInfo
- Publication number
- CA2137664A1 CA2137664A1 CA002137664A CA2137664A CA2137664A1 CA 2137664 A1 CA2137664 A1 CA 2137664A1 CA 002137664 A CA002137664 A CA 002137664A CA 2137664 A CA2137664 A CA 2137664A CA 2137664 A1 CA2137664 A1 CA 2137664A1
- Authority
- CA
- Canada
- Prior art keywords
- slide according
- weight
- mixture
- slide
- additive
- 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.)
- Abandoned
Links
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
Landscapes
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Lubricants (AREA)
- Temperature-Responsive Valves (AREA)
- Screw Conveyors (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Mechanical Treatment Of Semiconductor (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Adornments (AREA)
- Formation And Processing Of Food Products (AREA)
- Liquid Crystal (AREA)
- Glass Compositions (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Slide for sport and play, the exposed surface of which is built up from a melted mixture comprising a natural and/or syn-thetic hard wax, a polymer, a mineral and optionally a friction and wear reducing additive.
Description
~ WO94/01186 2~76B4 PCT/SE93/00619 Slide 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 $ce grounds involve high investment costs, and solely the 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. The season for a conventional artificial ice ground is often not more than about seven months, and during periods with high daytime temperatures it is often uneconomical. An artificial skating ground is furthermore restricted to a specific geographic location and is thus useful only at the site where the cooling tubes are cast into the support.
Another in~ul,~el,ience with artificial ice grounds is t~e fact that the cooling equipment uses cooling media containing ammonia and water containing salts. The ammonia 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-ceeds about lOC 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 -1C and -20C. In countries having a high 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 -. W O 94/01186 PC~r/SE93/00619 ~
7~ 2 capable of operation within a much broader temperature range. Another object of the invention is to provide sli-des which are easy to restore and the friction coefficient and surface hardness of which can be modified according to the activity involved. Still another object of the inven-tion is to provide slides which show improved non-cracking characeristics.
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 melted mixture comprising a natural and/or synthetic hard wax, a polymer, a mineral and optionally a friction and wear re-ducing additive.
Thus, the slide according to the invention does not require energy consuming cooling and the surface may thus have the envilo- -ntal temperature which can vary between wide limits, for example from -20C to +50C. In this manner it is possible to avoid the inconvenience 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 0 to 15 measured using needle penetration according to DIN 51579 or Norm ASTM 1321 at +20C.
In a preferred embodiment of the invention the mix-ture has a melting point of from about 80 to about 180C, preferably from about 90 to about 140C, especially from about 100 to about 130C.
The hard wax used in the composition or mixture according to the invention is the major component thereof, which generally means that the weight percentage thereof is greater than the weight percentage of any of the other -components or ingredients of the mixture. Preferably this means that said hard wax comprises more than 40, often more than 50, % by weight of the total composition or mix-ture.
~ W O 94/01186 21 ~ 7 6 6 4 PC~r/SE93/00619 ., A multitude of hard waxes are useful in the inven-tion, and a suitable wax can be selected among technique waxes, microwaxes, synthetic waxes, especially polyethy-lene waxes, and paraffin waxes, including mixtures thereof.
For the purpose of modifying the properties of the wax, especially increasing the homogeneity of binding and also increasing the hardness of the surface of the slide, the hard wax is ~mi~ with a polymer material in an amount of up to about 30% by weight based on the total weight, preferably 5-30% by weight.
Such polymer material is suitably in the form of powders, granulates or dust, and preferable types of materials are polyethylene, polypropylene, nylon and similar and of course mixtures thereof.
Especially in order to have a crack-resistant surface of the slide clAim~ the mixture contains as a third in-gredient at least one mineral in an amount of up to about 40% by weight, preferably 5-40% by weight, based on the total composition.
Said mineral is preferably selected from the group consisting of talcum and mica, including mixtures thereof.
For the purpose of the invention, however, said third ingredient need not necessarily be a natural mineral or inorganic compound. Rather it may well be any synthetic equivalent of such a mineral ocurring in nature, such as an inorganic compound in the form of an oxide, phosphate, carbonate and/or hydrate.
In order to further reduce the friction and to improve the wear characteristics of the slide the mixture may also contain friction and wear reducing additives, especially of a lamellar molecular structure, in an amount of up to 10% by weight, preferably 0,1 - 10~ by weight, especially 2 - 10% by weight, based on the total composi-tion.
-W O 94/01186 - PC~r/SE93/00619 Said additives are preferably selected from the group consisting of molybden disulphide, graphite, boron nitride and cerium trifluoride.
It is preferred that the viscosity of the mixture at 140C is from about 1000 to 100000, especially 2000 to 50000 centiStoke (cSt).
It may also be suitable to add to the mixture stabi-lizing additives, such as W-stabilizers, anti-oxidants etc. Such additives are of a conventional kind and do not require further detailed description.
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, often not more than about 1 mm, of the slide.
The slide according to the invention 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, ~obogganing, etc.
It is preferred to use in the slide according to the invention such a composition of the mixture that the coefficient of expansion from liquid to solid 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 elim;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.
. ~ WO94/01186 ~I 3 ~ 64 PCT/SE93/00619 EXAMPLES
The following four ingredients were used to prepare two different slides having properties similar to ice.
INGREDIENTS:
l. Hard wax Synthetic wax Manufacturer: TerHell Paraffin, Germany Manufacturing No: Syntervax 2010 Melting point: about 120 C
Penetration at 25C ASTM D 1321 about Viscosity at 120C ASTM D 445 about 12 cSt 2. Polymer Polyethylene, powder Manufacturer: NESTE Oy Chemicals, Finland Manufacturing No: NCPE 8683 Meltindex M12 g/lO min IS0 1133 Cond 4 4 0 Density kg/m ASTM D 1928 C/D 1505 924 3. Mineral Mica, powder Manufacturer: Kemira Oy, Finland Manufacturing No. CMMP N 85 Powder size about 40/1000 mm Melting point about 1200C
Presently sport or play activities requiring a low friction support, for example skating, takes place on artificial skating grounds or on natural ice. Artificial $ce grounds involve high investment costs, and solely the 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. The season for a conventional artificial ice ground is often not more than about seven months, and during periods with high daytime temperatures it is often uneconomical. An artificial skating ground is furthermore restricted to a specific geographic location and is thus useful only at the site where the cooling tubes are cast into the support.
Another in~ul,~el,ience with artificial ice grounds is t~e fact that the cooling equipment uses cooling media containing ammonia and water containing salts. The ammonia 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-ceeds about lOC 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 -1C and -20C. In countries having a high 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 -. W O 94/01186 PC~r/SE93/00619 ~
7~ 2 capable of operation within a much broader temperature range. Another object of the invention is to provide sli-des which are easy to restore and the friction coefficient and surface hardness of which can be modified according to the activity involved. Still another object of the inven-tion is to provide slides which show improved non-cracking characeristics.
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 melted mixture comprising a natural and/or synthetic hard wax, a polymer, a mineral and optionally a friction and wear re-ducing additive.
Thus, the slide according to the invention does not require energy consuming cooling and the surface may thus have the envilo- -ntal temperature which can vary between wide limits, for example from -20C to +50C. In this manner it is possible to avoid the inconvenience 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 0 to 15 measured using needle penetration according to DIN 51579 or Norm ASTM 1321 at +20C.
In a preferred embodiment of the invention the mix-ture has a melting point of from about 80 to about 180C, preferably from about 90 to about 140C, especially from about 100 to about 130C.
The hard wax used in the composition or mixture according to the invention is the major component thereof, which generally means that the weight percentage thereof is greater than the weight percentage of any of the other -components or ingredients of the mixture. Preferably this means that said hard wax comprises more than 40, often more than 50, % by weight of the total composition or mix-ture.
~ W O 94/01186 21 ~ 7 6 6 4 PC~r/SE93/00619 ., A multitude of hard waxes are useful in the inven-tion, and a suitable wax can be selected among technique waxes, microwaxes, synthetic waxes, especially polyethy-lene waxes, and paraffin waxes, including mixtures thereof.
For the purpose of modifying the properties of the wax, especially increasing the homogeneity of binding and also increasing the hardness of the surface of the slide, the hard wax is ~mi~ with a polymer material in an amount of up to about 30% by weight based on the total weight, preferably 5-30% by weight.
Such polymer material is suitably in the form of powders, granulates or dust, and preferable types of materials are polyethylene, polypropylene, nylon and similar and of course mixtures thereof.
Especially in order to have a crack-resistant surface of the slide clAim~ the mixture contains as a third in-gredient at least one mineral in an amount of up to about 40% by weight, preferably 5-40% by weight, based on the total composition.
Said mineral is preferably selected from the group consisting of talcum and mica, including mixtures thereof.
For the purpose of the invention, however, said third ingredient need not necessarily be a natural mineral or inorganic compound. Rather it may well be any synthetic equivalent of such a mineral ocurring in nature, such as an inorganic compound in the form of an oxide, phosphate, carbonate and/or hydrate.
In order to further reduce the friction and to improve the wear characteristics of the slide the mixture may also contain friction and wear reducing additives, especially of a lamellar molecular structure, in an amount of up to 10% by weight, preferably 0,1 - 10~ by weight, especially 2 - 10% by weight, based on the total composi-tion.
-W O 94/01186 - PC~r/SE93/00619 Said additives are preferably selected from the group consisting of molybden disulphide, graphite, boron nitride and cerium trifluoride.
It is preferred that the viscosity of the mixture at 140C is from about 1000 to 100000, especially 2000 to 50000 centiStoke (cSt).
It may also be suitable to add to the mixture stabi-lizing additives, such as W-stabilizers, anti-oxidants etc. Such additives are of a conventional kind and do not require further detailed description.
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, often not more than about 1 mm, of the slide.
The slide according to the invention 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, ~obogganing, etc.
It is preferred to use in the slide according to the invention such a composition of the mixture that the coefficient of expansion from liquid to solid 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 elim;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.
. ~ WO94/01186 ~I 3 ~ 64 PCT/SE93/00619 EXAMPLES
The following four ingredients were used to prepare two different slides having properties similar to ice.
INGREDIENTS:
l. Hard wax Synthetic wax Manufacturer: TerHell Paraffin, Germany Manufacturing No: Syntervax 2010 Melting point: about 120 C
Penetration at 25C ASTM D 1321 about Viscosity at 120C ASTM D 445 about 12 cSt 2. Polymer Polyethylene, powder Manufacturer: NESTE Oy Chemicals, Finland Manufacturing No: NCPE 8683 Meltindex M12 g/lO min IS0 1133 Cond 4 4 0 Density kg/m ASTM D 1928 C/D 1505 924 3. Mineral Mica, powder Manufacturer: Kemira Oy, Finland Manufacturing No. CMMP N 85 Powder size about 40/1000 mm Melting point about 1200C
4. Additive Molybden disulphide, powder Manufacturer Stack Germany Powder size about 40/lO00 mm =
.
WO94/01186 ~4 PCT/SE93/00619 ~
The hard wax 1 is melted above 120C. The polymer 2 as well as the mineral 3 are combined with the wax, with stirring, when the temperature re~che~ about 160C. The weight percentages of 1, 2 and 3 are 55%, 20~ and 25%, respectively. The stirring is maint~in~ for at least 10 minutes. The molten mixture is poured into molds for solidification in the shape of plates. Said plates are melted together into a continuous slide having outstAn~ing properties similar to those of ice.
The procedure from Example 1 is repeated while re-ducing the percentage of the mineral 3 to 20% and ~ ng the additive 4 as a fourth ingredient at a percentage of 5%. The slide obt~; n~ possesses characteristics similar to those of Example 1 and with even lower friction.
.
WO94/01186 ~4 PCT/SE93/00619 ~
The hard wax 1 is melted above 120C. The polymer 2 as well as the mineral 3 are combined with the wax, with stirring, when the temperature re~che~ about 160C. The weight percentages of 1, 2 and 3 are 55%, 20~ and 25%, respectively. The stirring is maint~in~ for at least 10 minutes. The molten mixture is poured into molds for solidification in the shape of plates. Said plates are melted together into a continuous slide having outstAn~ing properties similar to those of ice.
The procedure from Example 1 is repeated while re-ducing the percentage of the mineral 3 to 20% and ~ ng the additive 4 as a fourth ingredient at a percentage of 5%. The slide obt~; n~ possesses characteristics similar to those of Example 1 and with even lower friction.
Claims (13)
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 melted mixture comprising a natural and/or synthetic hard wax, a polymer, a mineral and optionally a friction and wear reducing additive.
2. Slide according to claim 1, characterized in that the surface has a hardness of about 0-15 measured with needle penetration according to DIN 51579 or Norm ASTM
1321 at +20°C.
1321 at +20°C.
3. Slide according to claim 1 or 2, characterized in that the mixture has a melting point of from about 80 to about 180°C, preferably about 90 to about 140°C, especial-ly about 100 to about 130°C.
4. Slide according to any one of the preceding claims, characterized in that the viscosity of the mixture at 140°C is about 1000-100000 cSt, preferably 2000-50000 cSt.
5. Slide according to any one of the preceding claims, characterized in that the hard wax is the pre-dominant part of the mixture, preferably constituting more than 40, often more than 50, % by weight based on the total composition.
6. Slide according to any one of the preceding claims, characterized in that the hard wax comprises technique waxes, microwaxes, polyethylene waxes, and/or paraffin waxes.
7. Slide according to any one of the preceding claims, characterized in that the polymer is present in an amount of up to about 30% by weight, preferably 5 - 30% by weight, based on the total composition.
8. Slide according to any one of the preceding claims, characterized in that the polymer comprises polyethylene, polypropylene, and/or nylon.
9. Slide according to any one of the preceding claims characterized in that the mineral is present in an amount of up to about 40% by weight, preferably 5 - 40% by weight, based on the total composition.
10. Slide according to any one of the preceding claims, characterized in that the mineral comprises talcum and/or mica or any synthetic equivalent thereof, such as inorganic oxide, inorganic phosphate, inorganic carbonate and/or inorganic hydrate.
11. Slide according to any one of the preceding claims, characterized in that the friction and wear re-ducing additive is present in an amount of up to 10% by weight, preferably 2 - 10% by weight, based on the total composition.
12. Slide according to any one of the preceding claims, characterized in that the friction and wear re-ducing additive is an additive or additive mixture having a lamellar molecular structure, which preferably comprises molybden disulphide, graphite, boron nitride and/or cerium trifluoride.
13. Slide according to any one of the preceding claims, characterized in that the mixture contains stabilizing additives, such as UV-stabilizers and anti-oxidants.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9202123A SE501295C2 (en) | 1992-07-09 | 1992-07-09 | Slide for sport or play - has exposed surfaces of wax, polymer, mineral and opt. friction and wear reducing additives |
| SE9202123-7 | 1992-07-09 | ||
| SE9302311-7 | 1993-01-11 | ||
| SE9302311A SE9302311D0 (en) | 1993-07-05 | 1993-07-05 | SLIDE |
| PCT/SE1993/000619 WO1994001186A1 (en) | 1992-07-09 | 1993-07-07 | Slide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2137664A1 true CA2137664A1 (en) | 1994-01-20 |
Family
ID=26661480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002137664A Abandoned CA2137664A1 (en) | 1992-07-09 | 1993-07-07 | Slide |
Country Status (10)
| Country | Link |
|---|---|
| EP (1) | EP0649330B1 (en) |
| JP (1) | JPH07508898A (en) |
| AT (1) | ATE158953T1 (en) |
| AU (1) | AU4521493A (en) |
| CA (1) | CA2137664A1 (en) |
| DE (1) | DE69314489D1 (en) |
| EE (1) | EE9400278A (en) |
| FI (1) | FI945740A (en) |
| NO (1) | NO950074D0 (en) |
| WO (1) | WO1994001186A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2330147A (en) * | 1997-10-10 | 1999-04-14 | Collins Martin Enterprises | Synthetic surfaces such as horse gallops |
| DE19749785A1 (en) * | 1997-11-11 | 1999-05-12 | Sgl Carbon Ag | Sliding body containing Zn phosphate |
Family Cites Families (6)
| 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 |
| DE2723290A1 (en) * | 1977-05-24 | 1978-12-07 | Elmer O Nathaniel | Artificial ice-skating surface - is made from interlocked panels of plastics material which do not interfere with skates |
| IT1177640B (en) * | 1984-04-02 | 1987-08-26 | Stefano Vittorio Di | TRACK COMPLEX FOR ALAMA SKATES AND PROCEDURE TO OBTAIN IT |
| IT1239742B (en) * | 1990-01-08 | 1993-11-15 | Stefano Vittorio Di | MATERIAL FOR FLOORING OF SLOPES FOR SKATING WITH BLADE SKATES. |
| SE9001937D0 (en) * | 1990-05-30 | 1990-05-30 | Clifford Oehman | HAIR SURFACE RANGE OF PARAFFIN WAX |
| IT1244659B (en) * | 1991-03-05 | 1994-08-08 | Stefano Vittorio Di | FLOORING FOR SKATING WITH BLADE SKATES. |
-
1993
- 1993-07-07 CA CA002137664A patent/CA2137664A1/en not_active Abandoned
- 1993-07-07 AU AU45214/93A patent/AU4521493A/en not_active Abandoned
- 1993-07-07 JP JP6503237A patent/JPH07508898A/en active Pending
- 1993-07-07 WO PCT/SE1993/000619 patent/WO1994001186A1/en active IP Right Grant
- 1993-07-07 EP EP93915106A patent/EP0649330B1/en not_active Expired - Lifetime
- 1993-07-07 DE DE69314489T patent/DE69314489D1/en not_active Expired - Lifetime
- 1993-07-07 AT AT93915106T patent/ATE158953T1/en not_active IP Right Cessation
-
1994
- 1994-11-18 EE EE9400278A patent/EE9400278A/en unknown
- 1994-12-07 FI FI945740A patent/FI945740A/en not_active Application Discontinuation
-
1995
- 1995-01-06 NO NO950074A patent/NO950074D0/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07508898A (en) | 1995-10-05 |
| WO1994001186A1 (en) | 1994-01-20 |
| AU4521493A (en) | 1994-01-31 |
| ATE158953T1 (en) | 1997-10-15 |
| EE9400278A (en) | 1996-04-15 |
| EP0649330A1 (en) | 1995-04-26 |
| NO950074L (en) | 1995-01-06 |
| FI945740A0 (en) | 1994-12-07 |
| NO950074D0 (en) | 1995-01-06 |
| DE69314489D1 (en) | 1997-11-13 |
| EP0649330B1 (en) | 1997-10-08 |
| FI945740A (en) | 1994-12-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |