WO1993014268A1 - Pavement for sliding sports - Google Patents

Pavement for sliding sports Download PDF

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Publication number
WO1993014268A1
WO1993014268A1 PCT/EP1993/000119 EP9300119W WO9314268A1 WO 1993014268 A1 WO1993014268 A1 WO 1993014268A1 EP 9300119 W EP9300119 W EP 9300119W WO 9314268 A1 WO9314268 A1 WO 9314268A1
Authority
WO
WIPO (PCT)
Prior art keywords
substratum
intermediate layer
top layer
pavement
pavement according
Prior art date
Application number
PCT/EP1993/000119
Other languages
French (fr)
Inventor
Vittorio Di Stefano
Paolo Marini
Original Assignee
Skitech S.R.L.
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 Skitech S.R.L. filed Critical Skitech S.R.L.
Publication of WO1993014268A1 publication Critical patent/WO1993014268A1/en

Links

Classifications

    • 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
    • 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

Definitions

  • This invention refers to a pavement for sliding sports, such as blade-skating. More specifically, the invention provides for a synthetic pavement, i.e. a pavement made of materials other than icie and therefore usable without resorting to cryogenic equipment.
  • a synthetic pavement i.e. a pavement made of materials other than icie and therefore usable without resorting to cryogenic equipment.
  • Pavements for blade-skating made of materials different from ice have been developed in order to reduce the high investment and maintenance costs of ice pavements formed and mantained by means of cryogenic plants. Once worn out by use, the surface, or skating mantle, of the above mentioned pavements made of such materials, is restored by simply melting out the worn out layer or by means of a backfill of liquid material, eliminating in this way any wear trace. Besides, this restoring can be performed for an almost unlimited number of times.
  • a further object of the invention is the process for forming said pavement.
  • the top layer comprises a mixture of linear , branched or cyclic hydrocarbons , and polymers and copolymers of ethylene, propylene, butylene and mixtures thereof, said mixtures having a melting temperature ranging from 30 to 130 C.
  • the products described as LMM in the patent application PCT/EP 91/00006 are particularly preferred.
  • the intermediate layer is made up by a material compatible in the melted state with the top layer and apt to absorb, at least partially, by elastic and/or plastic deformation, the tensions due to shrinking from its solidification temperature to the temperature of utilization, once said top layer is rigidly anchored to the substratum.
  • Suitable materials to form the intermediate layer may be constituted by a mixture of the material making up the top layer and plasticizing and/or elasticizing additives added in such a quantity as to reproduce the above conditions.
  • additives for instance, the following can be advantageously used as additives: rosin and colophony derivatives, ethylene/vinyl acetate copolymers and other additives known to those skilled in the art. Additions may be such as to produce a final mixture comprising at least 5% b.w. of additives.
  • the intermediate layer may also contain fire-proof charges known to the art, such as, for instance, mixtures of chloroparaffin and antimony oxide.
  • the intermediate layer is particularly preferred for the intermediate layer.
  • the thickness of the layer is not a critical factor and depends on the construction requirements of the pavement. In general, the thickness of the intermediate layer and the top layer will be of 3 ⁇ -L0 mm and 3 ⁇ 6 mm respectively.
  • the substratum may be constituted by any rigid material. In particular, it may be for instance cement, bricks, asphalt, wood, laminated plastic, or even glass, or other materials applicable in the semifluid (or semisolid) state and hardening thereafter, during the setting stage.
  • Anchorings are constituted by discontinuities of the substratum surface which is in contact with the intermediate layer, meaning by discontinuities those cavities and/or bulges existing on such surface which respectively incorporate portions of the material constituting the intermediate layer and/or are incorporated by the latter. Such incorporations are formed by pouring on the substratum the material of the intermediate layer.
  • Said cavities may be obtained artificially by creating holes, cuts, incisions, and/or profiles on the substratum surface on its formation. Or else they may be innate in the substratum in form of macroporosities, as, for instance, in foamed bricks, cement or foamed clay articles. Bulges are preferably obtained by using materials that can be partially embedded in the substratum when "the latter is still in the semiliquid state, and partially emerge from it on its solidification. Although articles of different kind may be used, they should always be capable of contrasting all of the forces arising as a consequence of the thermal contraction of the system comprising the intermediate layer and the top layer.
  • Such forces have not only tangential components, due to shrinking after solidification, but also vertical components: the thicker the materials overlying the anchoring, the stronger the vertical components.
  • vertical components the thicker the materials overlying the anchoring, the stronger the vertical components.
  • the following are preferred because of their extremely low cost: nets of any type, spirals, metal scraps.
  • the formation of the pavement according to this invention may be carried out by applying in succession the intermediate layer and the top layer by direct pouring on a single pouring bed, with undeniable cost advantages.
  • the pavements formed according to this invention have never given rise to detachment of skating material, not even outdoors in severe weather conditions. Besides, their production costs are decidedly low, and their installation is easy. As well as for blade-skating, the pavements described may be used for any other sports for which an adequate sliding surface is required, such as, for instance, bobsledding, sledding, skiing.
  • Top layer composition a) paraffin wax with a penetration index of 25 (measured at 20°C with needle penetrometer, MEM method) , saponification 0, iodine number 0; b) microcrystalline polyethylene wax, with melting point ranging between 110 and 120°C; in the proportion of: 702 b.w. of a) and "$0% b.w. of b) .
  • Intermediate layer composition a) paraffin wax as above; c) EVA at 30% of vinyl acetate; in the proportion of: 65 b.w. of a) and 35 b.w. of c) .
  • Type of anchoring a) paraffin wax with a penetration index of 25 (measured at 20°C with needle penetrometer, MEM method) , saponification 0, iodine number 0; b) microcrystalline polyethylene wax, with melting point ranging between 110 and 120°C; in the proportion of: 702 b.w. of a) and "$0% b.w. of
  • the substratum in this case cement
  • the anchoring constituted by a metal spiral net
  • CAVITY-TYPE ANCHORING constituted by a vibrated cement artifact having -400 holes, with a 12 mm diameter and a 10 mm depth per m 2 .
  • BULGE/CAVITY MIXED-TYPE ANCHORING constituted by reinforced foamed clay artifacts.
  • the intermediate layer has been poured in the fluid state and at a temperature of l ⁇ ° C on each of the three substrata, in the proportion of 10 kg/m 2 .
  • the top layer After cooling, the top layer has been poured in the same way at a temperature of l8 ⁇ ° C in the proportion of 5 kg/m 2 .
  • Pavements according to this invention have not given rise to detachments, neither of the top layer nor of the substratum, not even when, exposed to water and freezing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Structures (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention refers to a synthetic pavement for sliding sports, such as blade-skating, i.e. a pavement made of materials other than ice and therefore usable without resorting to cryogenic equipment. Said pavement comprises: (i) a top paraffinic layer; (ii) an intermediate layer, compatible in the melted state with said top layer; (iii) a rigid substratum, characterized by surface discontinuities, either due to the very nature of the substratum or artificially obtained when producing the substratum, for instance by partially incorporating in it foreign materials or else by producing in the substratum cavities which open outwards, said discontinuities constituting an anchoring between the intermediate layer and the substratum when the former is poured on the latter.

Description

PAVEMENT FOR SLIDING SPORTS
FIELD OF THE INVENTION
This invention refers to a pavement for sliding sports, such as blade-skating. More specifically, the invention provides for a synthetic pavement, i.e. a pavement made of materials other than icie and therefore usable without resorting to cryogenic equipment. PRIOR ART
Pavements for blade-skating made of materials different from ice (DE 3-4 -45 976, PCT/EP 91/00006) have been developed in order to reduce the high investment and maintenance costs of ice pavements formed and mantained by means of cryogenic plants. Once worn out by use, the surface, or skating mantle, of the above mentioned pavements made of such materials, is restored by simply melting out the worn out layer or by means of a backfill of liquid material, eliminating in this way any wear trace. Besides, this restoring can be performed for an almost unlimited number of times.
In order to form pavements having optimal characteristics with the materials described in the above mentioned patent applications, specific applying techniques had to be developed. In particular, it was necessary to prevent a possible and progressive detachement of the skating mantle from the substratum on which it had to be applied, as such detachment would result in turn in the destruction of the pavement. This possibility should be taken into account inasmuch it may ensue either from seasonal changes in temperature (it should be remembered that pavements may also be built outdoors) or as a consequence of repeated thermal cycles due to normal repair of the skating mantle. A special technology has now been found for the formation of said pavements, which permits to overcome the above mentioned drawbacks, and which, besides, is obtainable to very low costs. SUMMARY OF THE INVENTION
It is an object of the present invention to obtain a pavement for sliding sports, such as blade-skating, said pavement comprising: (i) a top paraffinic layer; (ii) an intermediate layer, compatible in the melted state with said top layer; (iii) a rigid substratum, characterized by surface discontinuities, either due to the very nature of the substratum or artificially obtained when producing the substratum, for instance by partially incorporating in it foreign materials or else by producing in the substratum cavities which open outwards, said discontinuities constituting an anchoring between the intermediate layer and the substratum when the former is poured on the latter.
A further object of the invention is the process for forming said pavement.
Other objects of this invention are made clear in the following description.
DETAILED DESCRIPTION OF THE INVENTION
According to the present invention , the top layer comprises a mixture of linear , branched or cyclic hydrocarbons , and polymers and copolymers of ethylene, propylene, butylene and mixtures thereof, said mixtures having a melting temperature ranging from 30 to 130 C. The products described as LMM in the patent application PCT/EP 91/00006 are particularly preferred. The intermediate layer is made up by a material compatible in the melted state with the top layer and apt to absorb, at least partially, by elastic and/or plastic deformation, the tensions due to shrinking from its solidification temperature to the temperature of utilization, once said top layer is rigidly anchored to the substratum.
Suitable materials to form the intermediate layer may be constituted by a mixture of the material making up the top layer and plasticizing and/or elasticizing additives added in such a quantity as to reproduce the above conditions. For instance, the following can be advantageously used as additives: rosin and colophony derivatives, ethylene/vinyl acetate copolymers and other additives known to those skilled in the art. Additions may be such as to produce a final mixture comprising at least 5% b.w. of additives. The intermediate layer may also contain fire-proof charges known to the art, such as, for instance, mixtures of chloroparaffin and antimony oxide.
Particularly preferred for the intermediate layer are the products described in the above mentioned PCT application and identified as LTTP. The thickness of the layer is not a critical factor and depends on the construction requirements of the pavement. In general, the thickness of the intermediate layer and the top layer will be of 3~-L0 mm and 3~6 mm respectively. The substratum may be constituted by any rigid material. In particular, it may be for instance cement, bricks, asphalt, wood, laminated plastic, or even glass, or other materials applicable in the semifluid (or semisolid) state and hardening thereafter, during the setting stage. Anchorings are constituted by discontinuities of the substratum surface which is in contact with the intermediate layer, meaning by discontinuities those cavities and/or bulges existing on such surface which respectively incorporate portions of the material constituting the intermediate layer and/or are incorporated by the latter. Such incorporations are formed by pouring on the substratum the material of the intermediate layer.
Said cavities may be obtained artificially by creating holes, cuts, incisions, and/or profiles on the substratum surface on its formation. Or else they may be innate in the substratum in form of macroporosities, as, for instance, in foamed bricks, cement or foamed clay articles. Bulges are preferably obtained by using materials that can be partially embedded in the substratum when "the latter is still in the semiliquid state, and partially emerge from it on its solidification. Although articles of different kind may be used, they should always be capable of contrasting all of the forces arising as a consequence of the thermal contraction of the system comprising the intermediate layer and the top layer. Such forces have not only tangential components, due to shrinking after solidification, but also vertical components: the thicker the materials overlying the anchoring, the stronger the vertical components. In particular, the following are preferred because of their extremely low cost: nets of any type, spirals, metal scraps.
The formation of the pavement according to this invention may be carried out by applying in succession the intermediate layer and the top layer by direct pouring on a single pouring bed, with undeniable cost advantages.
The pavements formed according to this invention have never given rise to detachment of skating material, not even outdoors in severe weather conditions. Besides, their production costs are decidedly low, and their installation is easy. As well as for blade-skating, the pavements described may be used for any other sports for which an adequate sliding surface is required, such as, for instance, bobsledding, sledding, skiing.
The following examples are given to better define the invention and should not be regarded as a limitation of same. Top layer composition a) paraffin wax with a penetration index of 25 (measured at 20°C with needle penetrometer, MEM method) , saponification 0, iodine number 0; b) microcrystalline polyethylene wax, with melting point ranging between 110 and 120°C; in the proportion of: 702 b.w. of a) and "$0% b.w. of b) . Intermediate layer composition a) paraffin wax as above; c) EVA at 30% of vinyl acetate; in the proportion of: 65 b.w. of a) and 35 b.w. of c) . Type of anchoring
I) BULGE-TYPE ANCHORING, obtained through the following process.
The substratum (in this case cement) has been poured in the semiliquid stage, and the anchoring, constituted by a metal spiral net, has been half-embedded in it. II) CAVITY-TYPE ANCHORING, constituted by a vibrated cement artifact having -400 holes, with a 12 mm diameter and a 10 mm depth per m2. Ill) BULGE/CAVITY MIXED-TYPE ANCHORING, constituted by reinforced foamed clay artifacts. Application process The intermediate layer has been poured in the fluid state and at a temperature of lδθ°C on each of the three substrata, in the proportion of 10 kg/m2.
After cooling, the top layer has been poured in the same way at a temperature of l8θ°C in the proportion of 5 kg/m2.
Pavements according to this invention have not given rise to detachments, neither of the top layer nor of the substratum, not even when, exposed to water and freezing.

Claims

1 1. Pavement for sliding sports comprising: (i) a top layer of
2 paraffinic nature; (ii) an intermediate layer, compatible at the
3 melted state with said top layer; (iii) a rigid substratum, - characterized by surface discontinuities, due to one of the very
5 nature of the substratum and artificially obtained on producing the
6 substratum; said discontinuities constituting the anchoring between
7 the intermediate layer and the substratum when the material
8 constituting the intermediate layer is poured on said substratum.
■t 2. Pavement according to claim 1, wherein the top layer comprises a
2 mixture of linear, branched or cyclic hydrocarbons and polymers and
3 copolymers of ethylene, propylene, butylene and mixtures thereof,
4 said mixture having a melting temperature between 30° and 130°C; and the intermediate layer is constituted by a material, compatible at 5 g the melted state with the top layer, and apt to absorb, at least
7 partially, by elastic and/or plastic deformation, the tensions due to
„ shrinking from its solidification temperature to the temperature of
9 utilization, once it is anchored to the substratum.
3• Pavement according to claim 1, wherein the intermediate layer
2 consists of a mixture of the material constituting the top layer and
3 an additive selected among plasticizing and elasticizing materials.
-, h . Pavement according to claim 1, wherein the intermediate layer
2 consists of a mixture of the material constituting the top layer and
„ an additive selected among: rosin and colophony derivatives,
4 ethylene/vinyl acetate copolymers, added in such a quantity as to 5 produce a final mixture comprising at least » b.w. of additives.
5- Pavement according to claim 1, wherein the discontinuities of the
2 substratum surface are constituted by cavities and/or bulges present
3 on such surface, respectively incorporating portions of the -* intermediate layer and/or being incorporated by the latter.
1 6. Pavement according to claim 1, wherein the discontinuities of the
2 substratum surface are constituted by bulges present on such surface,
3 said bulges being incorporated by portions of the intermediate layer
4 and being constituted by a material which is partially embedded in c the substratum when the latter is still semisolid, and which emerges 6 from it upon solidification. 7- Process for the formation of the pavement according to claim 1, wherein the intermediate layer, applied in the fluid state, and the top layer, also applied in the fluid state, are applied in succession, the latter upon solidification of the former, on the substratum. 8. Process for the formation of the pavement according to claim 1, wherein the intermediate layer, applied in the fluid state, and the top layer, also applied in the fluid state, are applied in succession, the latter upon solidification of the former, on the substratum and the substratum is applied in the semisolid state, and an anchoring system is embedded in it in such a way that said substratum, in setting, partially incorporates it.
PCT/EP1993/000119 1992-01-21 1993-01-20 Pavement for sliding sports WO1993014268A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM920046A IT1254716B (en) 1992-01-21 1992-01-21 FLOORING FOR SLIDING SPORTS.
ITRM92A000046 1992-01-21

Publications (1)

Publication Number Publication Date
WO1993014268A1 true WO1993014268A1 (en) 1993-07-22

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Application Number Title Priority Date Filing Date
PCT/EP1993/000119 WO1993014268A1 (en) 1992-01-21 1993-01-20 Pavement for sliding sports

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IT (1) IT1254716B (en)
WO (1) WO1993014268A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409642B (en) * 1997-04-03 2002-09-25 Toko Ag KUNSTSTOFFGLEITBAHN

Citations (5)

* 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
WO1991010486A1 (en) * 1990-01-08 1991-07-25 Skitech, S.R.L. Material to pave skating rinks
WO1991018651A1 (en) * 1990-05-30 1991-12-12 Oehman Clifford Low friction surface for sport or play
EP0502484A1 (en) * 1991-03-05 1992-09-09 Skitech Srl Blade-skating pavement

Patent Citations (5)

* 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
WO1991010486A1 (en) * 1990-01-08 1991-07-25 Skitech, S.R.L. Material to pave skating rinks
WO1991018651A1 (en) * 1990-05-30 1991-12-12 Oehman Clifford Low friction surface for sport or play
EP0502484A1 (en) * 1991-03-05 1992-09-09 Skitech Srl Blade-skating pavement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT409642B (en) * 1997-04-03 2002-09-25 Toko Ag KUNSTSTOFFGLEITBAHN

Also Published As

Publication number Publication date
IT1254716B (en) 1995-10-09
ITRM920046A0 (en) 1992-01-21
ITRM920046A1 (en) 1993-07-21

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