• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a device for preserving snow (1) for sports purposes, comprising a plurality of flat, interconnected cover elements, wherein each cover element (2) is formed by an insulating mat made of a foamed polyethylene, which at the top with a film (9, 15) is provided. The top-side films (9, 15) of two mats each are connected by a strip (22) bridging the joint between the two mats, which is welded or glued to at least one of the two films.
    公开号:CH714948A2
    申请号:CH8462018
    申请日:2018-07-06
    公开日:2019-10-31
    发明作者:Hebbel Roland
    申请人:Steinbacher Daemmstoff Ges M B H；
    IPC主号:
    专利说明:

    Description: The invention relates to a device for preserving snow for sports purposes, with a plurality of flat, interconnected cover elements.
    It has long been known to preserve snow at the end of a winter over the summer by means of insulating cover elements in order to have enough snow for the preparation of slopes, cross-country trails, etc. at the beginning of the new season, see EP 201 987.
    Specifically on ski jumping facilities, the landing surface and the run-out surface can be provided with a covering formed from an insulating layer and a weather protection layer for the purpose of snow preservation, the insulating layer consisting, for example, of an air-permeable fleece and a covering of sawdust, glass wool or the like and the weather protection layer is formed from plastic film webs (DE 10 2014 110 897).
    Recent attempts to conserve snow included covering a pile of snow with insulation boards made of a polystyrene rigid foam, on which a film for moisture sealing and a protective fleece against UV rays and wind are applied. In this way, up to approx. 80% of the accumulated snow volume could be preserved over the summer.
    The invention has now set itself the task of improving the efficiency of such a preservation device, and provides for this that each cover element is formed by an insulating mat made of a foamed polyethylene, which is provided on the top with a film, and that the top film of two mats are connected to one another by a strip bridging the joint between the two mats, the strip being glued or welded to at least one of the two top films, in particular to both top films.
    The strip may preferably consist of a non-diffusion nonwoven composite made of a polypropylene, and be coated on one side with a polyacrylate pressure sensitive adhesive. The polyethylene foam mats are preferably rolled out in rolls of 30 m in length and 6 m in width on the snow or on an insulating base and connected by means of the strips. This means that relatively small plates do not have to be laid, and the preservation device can easily be adapted to any shaped accumulations of snow. The gluing or welding of the strips seals the joints between the mats so that no water can penetrate.
    The mats are in particular 16 mm thick and laminated on one side with a film made of an ethylene vinyl acetate (EVA), and provided on the other side with a film made of an aluminum multilayer composite. Each of the two foils can be provided on the underside, that is to say the snow support side, or on the top side. The aluminum multilayer composite can in particular comprise an aluminum foil, a glass fiber scrim and an outside protective layer made of a low-pressure polyethylene.
    The mats are preferably formed from two superimposed single mats of the same thickness, one single mat on one side can carry the EVA film and the second single mat on one side the aluminum multilayer composite. The two uncoated sides of the individual mats are connected to one another, in particular welded.
    The invention is described below with reference to the accompanying drawings, without being limited thereto. Show it:
    1 schematically shows a pile of snow with a device according to the invention,
    Fig. 2 and 3 sections along the lines ll-ll and Ill-Ill in Fig. 1 by a first embodiment, and
    4 and 5 sections along the lines II-II and III-III in Fig. 1 by a second embodiment.
    Before the snow begins to melt in spring, snow 1 is piled up at suitable points and the pile is covered, so that at least a substantial part of the snow is still available at the beginning of the next winter. Cover elements 2 in the form of mats made of a foamed polyethylene are spread out or rolled out over the snow 1 and connected to one another by strips 22, each of which bridges the joints between the cover elements 2. A weather protection element 21 made of a geotextile, for example a so-called glacier fleece web, such as is used to cover glaciers, is arranged above the cover elements 2 and serves as additional protection against rain, wind and UV rays.
    2 to 5 show in detail, a cover element 2 is formed from two superimposed individual mats 3, 4 made of polyethylene foam, which are welded together.
    2 and 4, the upper single mat 3 is laminated on the top with a heat-weldable film 9, in particular from an ethylene vinyl acetate (EVA) with a thickness of 190 microns. Preferred values for the tensile strength of the film 9 are 23.5 N / mm 2 in the longitudinal direction and 20.2 N / mm 2 in the transverse direction, and 796.3% for the elongation at break and 823.5% in the transverse direction. The lower individual mat 4 is provided on the underside lying on the snow 1 with a lamination 5 comprising an aluminum multilayer composite,
    CH 714 948 A2 which consists of an aluminum foil 6 with a preferred thickness of 18 μm, a glass fiber fabric 7 with a preferred mesh size of 5x5 mm and a coating 8 on the underside made of a low-pressure polyethylene, which preferably has a weight of 20 g / m 2 . The lamination 5 is preferably temperature-resistant between -5 ° C. and +90 ° C., has a water vapor permeability of 0.05 g / m 2 in 24 hours and reflects approximately 85% of infrared radiation. The tolerances are around +/- 10%.
    3 and 5, the upper single mat 3 is laminated on the top with an aluminum multilayer composite reflecting film 15, which is made of an aluminum film 16 with a preferred thickness of 18 microns to 200 microns, a glass fiber fabric 17 with a preferred mesh size of 5x5 mm to 30 x 30 mm and a top coating 18 consists of a low-pressure polyethylene, which preferably has a weight of 20 g / m 2 . The film 15 is also preferably temperature-resistant between -5 ° C. and +90 ° C., has a water vapor permeability of 0.05 g / m 2 in 24 hours and reflects approximately 85% of infrared radiation. The tolerances are around +/- 10%.
    In this embodiment, the lower individual mat 4 is laminated on the underside lying on the snow 1 with the heat-weldable film 19, in particular made of an ethylene vinyl acetate (EVA) with a thickness of 190 μm. Preferred values for the tear strength of the film 19 are 23.5 N / mm 2 in the longitudinal direction and 20.2 N / mm 2 in the transverse direction, and 796.3% in the longitudinal direction and 823.5% in the transverse direction.
    According to the embodiments of FIGS. 2 and 3, the two mats placed on the snow 1 are butted against each other without protrusion. To cover the joints between the mats, strips 22 made of a polypropylene nonwoven composite are connected to the top-side foils 9 and 15 of the cover elements 2. For this purpose, the strips are coated, for example, with a polyacrylate pressure sensitive adhesive. Polypropylene nonwoven composite strips of this type are also used on roofs as so-called ridge or throat bands. The cover elements 2 are completely covered with the weather protection element 21 mentioned at the beginning.
    4 and 5 show an overlapping laying of the cover elements 2, the strip 22 being double-edged covering the contact joint, and glued to the two mats on the top film 9 and 15, respectively. A weather protection element 21 also covers the complete coverage of the snow 1 here.
    权利要求:
    Claims (23)
    [1]
    claims
    1. Device for the preservation of snow (1) for sports purposes, with a plurality of flat, interconnected cover elements (2), characterized in that each cover element (2) is formed by an insulating mat made of a foamed polyethylene, the top with a Foil (9, 15) is provided, and that the top-side foils (9, 15) of two mats are connected to one another by a strip (22) bridging the gap between the two mats, the strip (22) being connected to at least one of the is welded or glued to the two top films (9, 15).
    [2]
    2. Device according to claim 1, characterized in that the strip (22) is welded or glued to both top-side foils (9, 15).
    [3]
    3. Device according to claim 1 or 2, characterized in that the strip (22) has a width of at least 200 mm.
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the strip (22) consists of a diffusion-open nonwoven composite made of polypropylene.
    [5]
    5. Device according to one of claims 1 to 4, characterized in that the top film (9) is made of ethylene vinyl acetate.
    [6]
    6. The device according to claim 5, characterized in that the top film (9) has a thickness of 190 microns.
    [7]
    7. Device according to one of claims 1 to 6, characterized in that the mats on the support side to the snow have a lamination (5), an aluminum foil (6), a glass scrim (7) and a coating (8) made of a low-pressure polyethylene includes.
    [8]
    8. The device according to claim 7, characterized in that the aluminum foil (6) has a thickness of 18 microns.
    [9]
    9. The device according to claim 7, characterized in that the glass scrim (7) has a mesh size of 5x5 mm.
    [10]
    10. The device according to claim 7, characterized in that the coating (8) made of low-pressure polyethylene has a weight of about 20 g / m 2 .
    [11]
    11. The device according to one of claims 1 to 4, characterized in that the top-side film (15) consists of an aluminum multilayer composite.
    [12]
    12. The device according to claim 11, characterized in that the aluminum multilayer composite comprises an aluminum foil (16), a glass scrim (17) and a coating (18) made of a low-pressure polyethylene.
    CH 714 948 A2
    [13]
    13. The apparatus according to claim 12, characterized in that the aluminum foil (16) has a thickness of 18 microns to 200 microns.
    [14]
    14. The apparatus according to claim 12, characterized in that the glass scrim (17) has a mesh size of 5x5 mm to 30 x 30 mm.
    [15]
    15. The apparatus according to claim 12, characterized in that the coating (18) made of low-pressure polyethylene has a weight of about 20 g / m 2 .
    [16]
    16. The device according to one of claims 11 to 15, characterized in that the mats on the support side to the snow are laminated with a film (19) made of ethylene vinyl acetate.
    [17]
    17. The apparatus according to claim 16, characterized in that the film (19) has a thickness of 190 microns.
    [18]
    18. Device according to one of claims 1 to 17, characterized in that the mats have a thickness of about 16 mm.
    [19]
    19. Device according to one of claims 1 to 18, characterized in that the mats are composed of two individual mats (3, 4).
    [20]
    20. The apparatus according to claim 19, characterized in that the two individual mats (3, 4) are of the same thickness.
    [21]
    21. Device according to one of claims 1 to 20, characterized in that the mats are foamed from a polyethylene having a bulk density between 20 and 60 kg / m 3 .
    [22]
    22. Device according to one of claims 1 to 21, characterized in that the mats are made in a length up to 30 m and a width up to 6 m and each wound into a roll.
    [23]
    23. Device according to one of claims 1 to 22, characterized in that weather protection elements (21) are placed on the connected mats.
    CH 714 948 A2

    CH 714 948 A2

    CH 714 948 A2
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    同族专利:
    公开号 | 公开日
    CH714948B1|2022-02-15|
    AT16430U1|2019-08-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4632329A|1983-10-03|1986-12-30|Burley William G|Thermal barrier device for winter recreation surfaces|
    GB9400750D0|1994-01-17|1994-03-16|Aizen Valdimir|Method of regulating melting of surface ice water supply|
    AT15713U1|2017-05-30|2018-04-15|Steinbacher Daemmstoff Ges M B H|Device for preserving snow|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATGM50082/2018U|AT16430U1|2018-04-30|2018-04-30|Device for preserving snow|
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