WO2017213051A1 - 滑走用具及びその製造方法 - Google Patents
滑走用具及びその製造方法 Download PDFInfo
- Publication number
- WO2017213051A1 WO2017213051A1 PCT/JP2017/020669 JP2017020669W WO2017213051A1 WO 2017213051 A1 WO2017213051 A1 WO 2017213051A1 JP 2017020669 W JP2017020669 W JP 2017020669W WO 2017213051 A1 WO2017213051 A1 WO 2017213051A1
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- WIPO (PCT)
- Prior art keywords
- sliding
- snow
- polishing
- less
- water
- Prior art date
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Classifications
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- 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
- A63C5/12—Making thereof; Selection of particular materials
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C1/00—Skates
- A63C1/30—Skates with special blades
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C1/00—Skates
- A63C1/42—Manufacture of skates
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- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63C—SKATES; SKIS; ROLLER SKATES; DESIGN OR LAYOUT OF COURTS, RINKS OR THE LIKE
- A63C11/00—Accessories for skiing or snowboarding
- A63C11/04—Accessories for skiing or snowboarding for treating skis or snowboards
- A63C11/08—Apparatus for waxing or dewaxing
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- 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
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- 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
- A63C5/044—Structure of the surface thereof of the running sole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/30—Water skis fastened to the user's feet; Accessories specially adapted therefor
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G1/00—Polishing compositions
- C09G1/02—Polishing compositions containing abrasives or grinding agents
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09G—POLISHING COMPOSITIONS; SKI WAXES
- C09G3/00—Ski waxes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B32/00—Water sports boards; Accessories therefor
- B63B32/40—Twintip boards; Wakeboards; Surfboards; Windsurfing boards; Paddle boards, e.g. SUP boards; Accessories specially adapted therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B34/00—Vessels specially adapted for water sports or leisure; Body-supporting devices specially adapted for water sports or leisure
- B63B34/20—Canoes, kayaks or the like
Definitions
- the present invention relates to a sliding tool and a method for manufacturing the same.
- a skiing device for skiing on snow, ice, or water eg, snow skis for skiing on ice, ice skates for skiing on ice, water skis for skiing on water
- the sliding surface is smoothed and water-repellent.
- the running surface is smoothed and water-repellent by a wax film formed by grinding with a fixed abrasive and applying a wax.
- the conventional snow ski has smoothened the running surface and water repellent, there is still room for further improvement in the running performance.
- the present invention solves the above-mentioned problems of the prior art, and provides a sliding device having a low sliding resistance between the snow surface, the ice surface, and the water surface and having excellent sliding properties, and a method for manufacturing the same. This is the issue.
- a sliding tool is a sliding tool for sliding on snow, ice, or water, and has a sliding surface in contact with the snow surface, ice surface, or water surface.
- the gist is that the surface roughness Ra of the sliding surface is 1.0 ⁇ m or less.
- a method for manufacturing a sliding tool according to another aspect of the present invention is a method for manufacturing a sliding tool for sliding on snow, ice, or water, and the sliding surface in contact with the snow surface, ice surface, or water surface. And a polishing step of polishing the surface with a slurry-like polishing composition containing abrasive grains so that the surface roughness Ra of the sliding surface is 1.0 ⁇ m or less.
- the sliding tool according to the present invention has excellent sliding properties with low frictional resistance with the snow surface, ice surface, or water surface. Moreover, the manufacturing method of the sliding tool which concerns on this invention can manufacture the sliding tool which has the outstanding sliding property with low frictional resistance between a snow surface, an ice surface, or the water surface.
- the snow ski as an embodiment of the skiing tool according to the present invention is a skiing tool for skiing on snow.
- the snow ski according to the present embodiment includes an elongated substantially plate-shaped core member 10, a sole 12 disposed on the bottom surface side of the core member 10, and both sides in the width direction of the sole 12. And arranged edges 14, 14.
- the core material 10 is made of, for example, wood or fiber reinforced resin.
- the sole 12 is made of a resin such as polyethylene (for example, high molecular weight high-density polyethylene), polypropylene, polybutene, polyacetal, polymethacrylate, polytetrafluoroethylene, or the like.
- the edge 14 is made of, for example, metal.
- the exposed surface of the sole 12 constitutes the bottom surface of the snow ski, and this bottom surface forms a sliding surface 1 that contacts the snow surface when sliding.
- the sliding surface 1 is polished smoothly to impart smoothness and water repellency, and the surface roughness Ra is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, and more preferably 0.1 ⁇ m or less).
- the surface roughness Ra of the sliding surface 1 can be measured using a stylus type or laser type measuring machine. Since the surface roughness Ra of the sliding surface of the conventional snow ski is usually 1.5 ⁇ m or more, the sliding surface 1 of the snow ski of the present embodiment has smoothness and water repellency compared to the conventional snow ski. Very good. Therefore, the frictional resistance between the sliding surface 1 and the snow surface at the time of sliding becomes remarkably low, so the snow ski according to the present embodiment has an extremely excellent sliding property.
- the method for polishing the sliding surface 1 is a polishing method capable of setting the surface roughness Ra to 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, more preferably 0.1 ⁇ m or less).
- a method of polishing using a slurry-like polishing composition containing abrasive grains is suitable.
- the slurry-like polishing composition is interposed between the polishing cloth and the sliding surface 1 and the polishing cloth and the sliding surface 1 are relatively moved and rubbed while pressing the polishing cloth against the sliding surface 1, sliding Surface 1 can be polished.
- the surface roughness Ra can be 1.0 ⁇ m or less
- the sliding surface 1 is polished by using a compound-like polishing composition containing abrasive grains instead of the slurry-like polishing composition. Also good.
- the sliding surface of a conventional snow ski has been polished with a polishing tool having fixed abrasive grains (for example, a grindstone or a file), its surface roughness Ra is about 2.5 ⁇ m.
- a method is known in which after applying a solid wax such as paraffin wax, the surface roughness Ra is adjusted to about 1.5 to 2.0 ⁇ m by scraping or brushing.
- a polishing method for further smoothing the sliding surface of the snow ski has not been feasible.
- surface roughness Ra of the sliding surface 1 can be 1.0 micrometer or less.
- the surface roughness Ra of the ski surface of the snow ski is set to 1.0 ⁇ m or less, so that the frictional resistance between the sliding surface 1 and the snow surface during the sliding is significantly higher than that of the prior art. Found it to be lower.
- the present invention has been described by showing a snow ski as an example of a skiing device, but the type of snow ski is not particularly limited.
- a snow ski for a Nordic ski competition or a snow ski for an Alpine ski competition may be used.
- the snow ski board for Nordic ski competition the snow ski board for jump competition may be sufficient, and the snow ski board for distance competition may be sufficient.
- the sliding tool according to the present invention is not limited to the snow ski.
- snowboards, chair skis, kites, snowmobiles, and the like can be cited as examples other than the snow skis of the skiing equipment for sliding on the snow.
- the snowmobile includes a saddle-like member instead of a wheel as a member for performing steering, the present invention can be applied to the saddle-like member.
- the snow quality of the snow surface that is slid by the sliding tool according to the present invention is not particularly limited, and for example, it can be slid on the snow surface of fresh snow, marginal snow, rough snow, and artificial snow.
- the snow temperature of the snow surface that slides with the sliding tool according to the present invention is not particularly limited, but for example, the sliding tool according to the present invention is preferably used on a snow surface with a snow temperature of 0 ° C. or lower. it can.
- the external temperature at the time of using the sliding tool which concerns on this invention is not specifically limited, For example, the sliding tool which concerns on this invention can be preferably used under the external temperature of 3 degrees C or less.
- the humidity of the snow surface which slides with the sliding tool which concerns on this invention is not specifically limited.
- the present invention can be applied not only to a sliding tool for sliding on snow but also to a sliding tool for sliding on ice or water.
- the surface roughness Ra of the sliding surface is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, and still more preferably 0.8. If it is 1 ⁇ m or less), the above-mentioned effect can be obtained in the same manner as a sliding tool for sliding on snow.
- the sliding tool is, for example, an ice skating shoe
- the surface roughness Ra of the sliding surface of the metal blade in contact with the ice surface is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, More preferably, it may be 0.1 ⁇ m or less.
- the type of ice skating shoes is not particularly limited, and for example, ice skating shoes for ice hockey, ice skating shoes for speed skating, or ice skating shoes for figure skating may be used.
- the type of bag is not particularly limited, and for example, a bobsled bag, a luge bag, or a skeleton bag may be used.
- sliding tools for sliding on the water examples include water skis, surfboards, ships (boats), anchors, and watercrafts.
- the planing tool is, for example, a ship
- the outer surface of the bottom of the ship in contact with the water surface becomes the planing surface, so the surface roughness Ra of the outer surface of the bottom of the ship is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, more preferably 0.1 ⁇ m or less).
- the kind of ship is not specifically limited, For example, a yacht, canoe, a passenger ship, a cargo ship, and a hydrofoil ship may be sufficient.
- the type of the surface aircraft is not particularly limited, for example, it may be a flying boat that has a ship-shaped body structure that can float on the surface of the water and can be slid, and designed to be able to take off and land on the water, It may be a float surface machine designed to be capable of taking off and landing on the water by providing an outfit such as a float.
- the flying equipment for example, a flying boat
- the outer surface of the bottom of the flying boat that contacts the water surface becomes the sliding surface, and therefore the surface roughness Ra of the outer surface of the bottom of the flying boat is 1.0 ⁇ m or less (preferably 0).
- the sliding tool is, for example, a float surface machine
- the outer surface of the bottom portion of the floating boat in contact with the water surface becomes the sliding surface, so the surface roughness Ra of the outer surface of the bottom portion of the floating boat is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, and still more preferably 0.1 ⁇ m or less.
- the surface roughness Ra of the sliding surface 1 is 1.0 ⁇ m or less, the frictional resistance between the sliding surface 1 and the snow surface at the time of sliding is remarkably reduced. If the lubricant film 16 is coated on the sliding surface 1 having a surface roughness Ra of 1.0 ⁇ m or less (see FIG. 2), the water repellency of the sliding surface 1 is further increased. Since the frictional resistance between the sliding surface 1 and the snow surface at the time of sliding is further reduced, the sliding performance of the snow ski is further improved.
- the sliding surface 1 When the sliding surface 1 is coated with the lubricant film 16, the sliding surface 1 is polished using a slurry-like polishing composition containing abrasive grains, and the surface roughness Ra of the sliding surface 1 is 1.0 ⁇ m or less. After the polishing step (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, and further preferably 0.1 ⁇ m or less), a coating step for coating the polished sliding surface 1 with the lubricant film 16 is performed. Good. Of course, it is preferable to form the surface of the lubricant film 16 smoothly.
- the surface roughness Ra is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.25 ⁇ m or less, more preferably by polishing the surface of the coating film 16. Preferably, it may be 0.1 ⁇ m or less.
- the thickness of the lubricant coating 16 is not particularly limited. Even if the surface roughness Ra of the ground surface 1 after polishing exceeds 1.0 ⁇ m, the surface roughness Ra of the surface of the coating film 16 is 1.0 ⁇ m or less (preferably 0.5 ⁇ m or less, more preferably 0.8 ⁇ m or less). If it is 25 ⁇ m or less, more preferably 0.1 ⁇ m or less, the same effect as described above may be exhibited.
- a method for coating the sliding surface 1 with the lubricant film 16 is not particularly limited, and general methods such as a roll coating method, a spraying method, and a brush coating method can be employed without any problem.
- the type of the lubricant is not particularly limited, and general lubricants such as petroleum lubricants (for example, paraffin hot wax), mineral lubricants, fluorine lubricants, and the like can be used. .
- the properties of the lubricant are not particularly limited, such as solid, grease, and liquid.
- the slurry-like polishing composition that can be used for polishing the sliding surface 1 will be described.
- the slurry-like polishing composition contains abrasive grains and a liquid medium, and the abrasive grains are dispersed in the liquid medium to form a slurry.
- the slurry-like polishing composition may contain an additive as desired.
- the type of abrasive grains is not particularly limited, and aluminum oxide, silicon oxide, cerium oxide, zirconium oxide, zircon, titanium oxide, manganese oxide, silicon carbide, boron carbide, titanium carbide, titanium nitride, silicon nitride, boride Examples thereof include titanium and tungsten boride.
- the average secondary particle diameter of the abrasive grains is preferably 15 ⁇ m or less, more preferably 5 ⁇ m or less, further preferably 3 ⁇ m or less, particularly preferably 1 ⁇ m or less, still more preferably 0.5 ⁇ m or less, and most preferably 0.3 ⁇ m or less.
- the average secondary particle diameter of the abrasive grains can be measured by, for example, a dynamic light scattering method, a laser diffraction method, a laser scattering method, a pore electrical resistance method, or the like.
- the concentration of abrasive grains in the slurry-like polishing composition is preferably 45% by mass or less, and more preferably 25% by mass or less. The lower the abrasive concentration, the better the dispersibility and the lower the cost.
- the concentration of the abrasive grains in the slurry-like polishing composition is preferably 2% by mass or more, and more preferably 10% by mass or more. The higher the abrasive concentration, the higher the polishing rate.
- additives such as pH adjusters, etching agents, oxidizing agents, water-soluble polymers, anticorrosives, chelating agents, dispersion aids, antiseptics, antifungal agents, etc. May be added to the slurry-like polishing composition if desired.
- An additive may be used individually by 1 type and may use 2 or more types together.
- the liquid medium is a dispersion medium or solvent for dispersing or dissolving each component such as abrasive grains and additives.
- the type of the liquid medium is not particularly limited, and examples thereof include water and organic solvents (for example, oils and fats, alcohols, ethers).
- the liquid medium may be used alone or in combination of two or more, but preferably contains water.
- the compound-like polishing composition is almost the same as the slurry-like polishing composition except that the liquid medium has a lower concentration of the liquid medium and is semi-solid (grease-like) compared to the slurry-like polishing composition. Since the types of abrasive grains, liquid medium, and additives used are the same as in the slurry-like polishing composition, description thereof is omitted.
- the material of the polishing cloth is not particularly limited, and examples thereof include cloth, nonwoven fabric, suede, polyurethane foam, polyethylene foam, and porous fluororesin.
- any of a polishing cloth containing abrasive grains and a polishing cloth not containing abrasive grains can be used.
- the polishing surface of the polishing cloth may be provided with a groove for storing the slurry-like polishing composition.
- a flocked cloth or a woven cloth (a carpet is an example of a flocked cloth or a woven cloth) made of fibers such as wool or nylon can also be used as an abrasive cloth.
- the sliding surface 1 may be polished using a brush using a fiber such as nylon or a sponge using a resin such as a urethane resin, a phenol resin, or an epoxy resin instead of the polishing cloth.
- the polishing of the sliding surface 1 may be performed using a polishing apparatus having a function of holding and moving the polishing cloth to perform polishing, but the polishing operator manually moves the hand polisher attached with the polishing cloth.
- a polishing operator holding the polishing cloth may move the polishing cloth manually.
- the sliding surface 1 may be fixed by moving the hand polisher attached with the polishing cloth by a robot arm or the like.
- Example ⁇ The present invention will be described more specifically with reference to the following examples and comparative examples.
- One side surface of a substantially square columnar test piece made of polyethylene (CXC (central cross country ski association) wax test tool Nordic Torpedo, dimensions 43 mm ⁇ 43 mm ⁇ 300 mm, mass 489 g) was ground to various surface roughness Ra.
- CXC central cross country ski association wax test tool Nordic Torpedo, dimensions 43 mm ⁇ 43 mm ⁇ 300 mm, mass 489 g
- the surface roughness Ra of the polished surface of the test pieces of Example 1 and Example 2 was 0.04 ⁇ m.
- the surface roughness Ra of the polished surface of the test pieces of Example 3 and Example 4 was 0.41 ⁇ m.
- the surface roughness Ra of the polished surface of the test pieces of Comparative Example 1 and Comparative Example 2 was 1.68 ⁇ m.
- the surface roughness Ra of one side surface of the test pieces of Comparative Example 3 and Comparative Example 4 was 2.31 ⁇ m.
- the surface roughness Ra of the test piece was measured using a laser microscope shape measurement laser microscope VK-X200 manufactured by Keyence Corporation. The magnification is 1000 times, and the measurement area size is 284 ⁇ m ⁇ 213 ⁇ m.
- the material of the polishing cloth used for polishing the test pieces of Example 1 and Example 2 is suede.
- the material of the polishing cloth used for polishing the test pieces of Example 3 and Example 4 is a nonwoven fabric.
- the material of the polishing cloth used for polishing the test pieces of Comparative Example 1 and Comparative Example 2 is a nonwoven fabric.
- the polishing conditions for the test pieces of Examples 1 to 4 and Comparative Examples 1 and 2 are as follows.
- Polishing device Polishing device model 36PL-3R manufactured by LAPMASTER Polishing load: 19.6 kPa (200 gf / cm 2 ) Surface plate rotation speed: 30 min -1 Polishing time: 20 minutes Supply rate of polishing composition: 50 mL / min
- the surfaces to be polished of the test pieces of Examples 2 and 4 and Comparative Examples 2 and 4 were coated with a lubricant film by applying a lubricant.
- a lubricant liquid fluorine wax Dr. FCG MaxFluor was used.
- the surface roughness Ra after application of this lubricant was the same as the value before application (surface roughness Ra of the surface to be polished).
- the surface to be polished of the test pieces of Examples 1 and 3 and Comparative Examples 1 and 3 was not coated with a lubricant film.
- test pieces of Examples 1 to 4 and Comparative Examples 1 to 4 manufactured in this way were evaluated for sliding performance when sliding on snow.
- the surface to be polished was a sliding surface in contact with the snow surface.
- covered the film of the lubricant was made into the sliding surface which contact
- the inclined snow surface is a slope with a height difference of 80 cm and a length of 15 m.
- the inclination angle is large in the upper part (maximum 10 °) and gentle (almost 0 °) in the lower part.
- Condition 1 is that the outside air temperature is ⁇ 2 ° C., the humidity is 70%, the snow temperature is ⁇ 4 to ⁇ 2 ° C., the snow quality is tight, and the snow (crystal grain size 5 mm).
- Condition 2 is that the outside air temperature is 10 ° C., the humidity is 55%, the snow temperature is ⁇ 2 ° C., and the snow quality is tight.
- Condition 2 has a higher snow moisture content than Condition 1, and therefore snow quality is less likely to slide than Condition 1.
- condition 1 is snow quality that is easy to slide
- the sliding speed (unit: m / s) and the dynamic friction coefficient of the test piece sliding downward along the snow surface were measured as needed. Because the GPS sensor is attached to the test piece, the position information of the sliding test piece is acquired every 200 milliseconds by the GPS sensor, and the sliding speed and dynamic friction coefficient of the test piece are calculated from the change in the position information. did.
- the measured data of the sliding speed and the dynamic friction coefficient were plotted on the xy coordinates with the sliding speed as the x-axis and the dynamic friction coefficient as the y-axis to obtain an approximate straight line, and the slope ⁇ / ⁇ v of the approximate straight line was obtained.
- the maximum speed of the specimen was also determined.
- the sliding test was performed 6 times for each test piece, and the slope ⁇ / ⁇ v and the maximum speed were obtained using all the data of the 6 sliding tests, and the sliding property of the test piece was evaluated based on these values.
- condition 2 is snow quality that is difficult to slide, unlike condition 1, it did not slide a long distance. Therefore, the test piece was allowed to stand on an inclined snow surface, and the sliding performance was evaluated by the sliding distance from the start of sliding to the stop.
- Examples 5 to 7 and Comparative Examples 5 and 6 in which the sliding performance was evaluated under conditions different from those of Examples 1 to 4 and Comparative Examples 1 to 4 will be described.
- one side surface of a substantially square columnar test piece made of polyethylene was polished to various surface roughnesses Ra.
- the test pieces of Examples 5 to 7 and Comparative Example 5 were polished with a slurry-like polishing composition and a polishing cloth, and then applied with a lubricant, scraped, and brushed.
- coating of a lubricant, scraping, and a brush process were performed.
- the material of the polishing pad used for polishing the test piece of Example 5 is suede.
- the material of the polishing cloth used for polishing the test piece of Example 6 is a nonwoven fabric.
- the material of the polishing cloth used for polishing the test piece of Example 7 is a nonwoven fabric.
- the material of the polishing cloth used for polishing the test piece of Comparative Example 5 is a nonwoven fabric.
- the polishing conditions of the test pieces of Examples 5 to 7 and Comparative Example 5 are the same as those of Examples 1 to 4 and Comparative Examples 1 to 4.
- EXTRA BASE WAX and HYBRID HF VIOLET which are gallium waxes, were used. In detail, first apply EXTRA BASE WAX with hot iron, then remove excess wax with scraping and brush, and then apply HYBRID HF VIOLET with hot iron, then scrape excess brush with brush and brush Removed.
- the surface roughness Ra of the surface to be polished after coating with the lubricant (surface roughness Ra of the coating film of the lubricant) is as shown in Table 2.
- the method for measuring the surface roughness Ra of the test piece is the same as in Examples 1 to 4 and Comparative Examples 1 to 4.
- the test pieces of Examples 5 to 7 and Comparative Examples 5 and 6 produced in this way were evaluated for sliding properties when sliding on snow. About each test piece, the to-be-polished surface which coat
- the inclined snow surface is an inclined surface having a height difference of 200 cm and a length of 30 m, and the inclination angle is 4 °.
- the evaluation of gliding property was performed under the following two conditions.
- Condition 3 is that the outside air temperature is ⁇ 2.5 ° C., the humidity is 70%, the snow temperature is ⁇ 4 ° C., and the snow quality is artificial snow.
- Condition 4 is that the outside air temperature is 0 ° C., the humidity is 61%, the snow temperature is ⁇ 3 ° C., and the snow quality is fresh snow.
- Evaluation of sliding performance in the case of Condition 3 and Condition 4 was performed as follows. That is, an infrared measuring instrument using a phototube was used to measure the time required for sliding on an inclined snow surface having a length of 30 m, and the sliding performance was evaluated based on the sliding time.
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Abstract
Description
しかしながら、従来の雪上スキー板は、滑走面の平滑化と撥水化がなされてはいるものの、滑走性にさらなる改良の余地があった。
また、本発明の他の態様に係る滑走用具の製造方法は、雪上、氷上、又は水上を滑走するための滑走用具を製造する方法であって、雪面、氷面、又は水面に接する滑走面を、砥粒を含有するスラリー状研磨用組成物を用いて研磨して、前記滑走面の表面粗さRaを1.0μm以下とする研磨工程を備えることを要旨とする。
従来の雪上スキー板の滑走面の表面粗さRaは通常1.5μm以上であるので、本実施形態の雪上スキー板の滑走面1は、従来の雪上スキー板と比べて平滑性と撥水性が極めて優れている。そのため、滑走時の滑走面1と雪面との間の摩擦抵抗が顕著に低くなるので、本実施形態の雪上スキー板は極めて優れた滑走性を有する。
また、本発明に係る滑走用具で滑走する雪面の雪温は特に限定されるものではないが、例えば0℃以下の雪温の雪面で、本発明に係る滑走用具を好ましく使用することができる。
また、本発明に係る滑走用具を使用する際の外気温は特に限定されるものではないが、例えば3℃以下の外気温下で、本発明に係る滑走用具を好ましく使用することができる。
また、本発明に係る滑走用具で滑走する雪面の湿度は特に限定されるものではない。
なお、コンパウンド状研磨用組成物は、スラリー状研磨用組成物に比べて液状媒体の濃度が低く半固体状(グリース状)をなしている点を除いて、スラリー状研磨用組成物とほぼ同様であり、使用される砥粒、液状媒体、添加剤の種類はスラリー状研磨用組成物と同様であるので、その説明は省略する。
以下に実施例及び比較例を示して、本発明をさらに具体的に説明する。ポリエチレン製の略四角柱状試験片(CXC(central cross country ski association)のワックステストツールNordic Torpedo、寸法43mm×43mm×300mm、質量489g)の一側面を、種々の表面粗さRaに研磨した。実施例1及び実施例2の試験片については、スラリー状研磨用組成物と研磨布を用いて鏡面研磨を行った。実施例1及び実施例2の試験片の被研磨面の表面粗さRaは0.04μmであった。
実施例3及び実施例4の試験片については、スラリー状研磨用組成物と研磨布を用いて粗研磨を行った。実施例3及び実施例4の試験片の被研磨面の表面粗さRaは0.41μmであった。
なお、試験片の表面粗さRaは、株式会社キーエンス製のレーザ顕微鏡 形状測定レーザマイクロスコープVK-X200を用いて測定した。倍率は1000倍であり、測定エリアサイズは284μm×213μmである。
研磨荷重:19.6kPa(200gf/cm2)
定盤の回転速度:30min-1
研磨時間:20分間
研磨用組成物の供給速度:50mL/分
なお、条件1の場合の結果から分かるように、滑走面に潤滑剤の被膜を被覆した方が、潤滑剤の被膜を被覆しない方よりも最高速度が大きく、実施例1、2から滑走距離も大きくなる傾向が見られた。
このようにして製造した実施例5~7及び比較例5、6の試験片について、雪上を滑走する際の滑走性の評価を行った。各試験片については、潤滑剤の被膜を被覆した被研磨面を、雪面に接する滑走面とした。
滑走性の評価は、以下の2つの条件で行った。条件3は、外気温が-2.5℃、湿度が70%、雪温が-4℃、雪質が人工雪というものである。条件4は、外気温が0℃、湿度が61%、雪温が-3℃、雪質が新雪しまり雪というものである。
16 被膜
Claims (8)
- 雪上、氷上、又は水上を滑走するための滑走用具であって、雪面、氷面、又は水面に接する滑走面を有し、前記滑走面の表面粗さRaが1.0μm以下である滑走用具。
- 前記滑走面の表面粗さRaが0.25μm以下である請求項1に記載の滑走用具。
- 前記滑走面の表面粗さRaが0.1μm以下である請求項1に記載の滑走用具。
- 前記滑走面に潤滑剤の被膜を被覆した請求項1~3のいずれか一項に記載の滑走用具。
- 雪上、氷上、又は水上を滑走するための滑走用具を製造する方法であって、雪面、氷面、又は水面に接する滑走面を、砥粒を含有するスラリー状研磨用組成物を用いて研磨して、前記滑走面の表面粗さRaを1.0μm以下とする研磨工程を備える滑走用具の製造方法。
- 前記研磨工程は、前記滑走面の表面粗さRaを0.25μm以下とする工程である請求項5に記載の滑走用具の製造方法。
- 前記研磨工程は、前記滑走面の表面粗さRaを0.1μm以下とする工程である請求項5に記載の滑走用具の製造方法。
- 前記研磨工程の後に、研磨した前記滑走面に潤滑剤の被膜を被覆する被覆工程を備える請求項5~7のいずれか一項に記載の滑走用具の製造方法。
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US16/308,404 US10835805B2 (en) | 2016-06-10 | 2017-06-02 | Sliding instrument and method for manufacturing same |
JP2018522457A JP6974316B2 (ja) | 2016-06-10 | 2017-06-02 | 滑走用具及びその製造方法 |
CN201780035735.XA CN109310918B (zh) | 2016-06-10 | 2017-06-02 | 滑行用具和其制造方法 |
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RU2018141592A3 (ja) | 2020-07-14 |
JPWO2017213051A1 (ja) | 2019-04-04 |
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US20190126130A1 (en) | 2019-05-02 |
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