WO2023249047A1 - Matériau de revêtement de sol absorbant les chocs - Google Patents

Matériau de revêtement de sol absorbant les chocs Download PDF

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Publication number
WO2023249047A1
WO2023249047A1 PCT/JP2023/022916 JP2023022916W WO2023249047A1 WO 2023249047 A1 WO2023249047 A1 WO 2023249047A1 JP 2023022916 W JP2023022916 W JP 2023022916W WO 2023249047 A1 WO2023249047 A1 WO 2023249047A1
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WO
WIPO (PCT)
Prior art keywords
core layer
layer
impact
absorbing
flooring
Prior art date
Application number
PCT/JP2023/022916
Other languages
English (en)
Japanese (ja)
Inventor
嘉人 西野
Original Assignee
恵和株式会社
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
Priority claimed from JP2023100143A external-priority patent/JP2024002946A/ja
Application filed by 恵和株式会社 filed Critical 恵和株式会社
Publication of WO2023249047A1 publication Critical patent/WO2023249047A1/fr

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/18—Separately-laid insulating layers; Other additional insulating measures; Floating floors

Definitions

  • the present disclosure relates to a shock-absorbing flooring material that absorbs shocks received by pedestrians when they fall.
  • Patent Document 1 discloses a flooring material comprising a composite material containing a wood base material and a cushioning material.
  • the present disclosure aims to make it possible to realize a shock-absorbing flooring material that can stably exhibit sufficient shock-absorbing performance even when using a material with relatively high hardness.
  • a shock absorbing flooring material includes a core layer and a cushion layer that is arranged to overlap the core layer and is softer than the core layer,
  • the Asker C hardness of the layer is set to a value in the range of 10 to 40, and the maximum value of acceleration G measured in a floor hardness test based on JIS A 6519:2018 is set to a value in the range of 60 or less. It is set.
  • FIG. 1 is a sectional view of a shock absorbing flooring material according to an embodiment.
  • FIG. 1 is a sectional view of a shock absorbing flooring 1 according to an embodiment.
  • the shock-absorbing floor material 1 shown in FIG. 1 is used, for example, as a floor material in nursing care facilities, hospitals, rehabilitation facilities, and the like.
  • the shock absorbing flooring 1 is used with its outermost surface exposed or with another member laid on the outermost surface.
  • the shock-absorbing floor material 1 absorbs the shock when a pedestrian falls, thereby alleviating the impact on the pedestrian and protecting the pedestrian from injuries such as broken bones.
  • the shock absorbing flooring 1 is placed, for example, on an existing floor. Alternatively, the shock absorbing flooring 1 is placed, for example, on reinforced concrete. When the impact-absorbing flooring 1 is placed on reinforced concrete, the impact-absorbing flooring 1 is fixed to the surface of a floor slab, such as a concrete slab, for example.
  • the size of the impact absorbing flooring 1 in plan view is not limited. For example, a plurality of shock-absorbing flooring materials 1 are laid out on the construction target surface. As shown in FIG. 1, the shock absorbing flooring 1 includes a cushion layer 10, a soundproof layer 11, a core layer 12, a design layer 13, and a covering layer 14.
  • the components 10 to 14 are arranged one on top of the other in the same order from the bottom to the top.
  • FIG. 1 schematically shows the thickness dimensions of the components 10 to 14.
  • the cushion layer 10 relieves the impact acting on the core layer 12 by elastic deformation.
  • the cushion layer 10 is arranged to overlap the core layer 12 and is formed to be more flexible than the core layer 12.
  • the cushion layer 10 includes, for example, a foam member.
  • the cushion layer 10 of this embodiment includes at least one of polyurethane foam, polyethylene foam, and foamed rubber.
  • the soundproof layer 11 reduces noise passing through the shock absorbing flooring 1.
  • the soundproof layer 11 includes, for example, a caking material made by bonding resin, rubber, or asphalt with a binder, and a high specific gravity filler.
  • the core layer 12 is the main component of the shock absorbing flooring 1.
  • the core layer 12 is the base layer of the shock absorbing flooring 1.
  • the core layer 12 provides the impact-absorbing flooring 1 with the texture of the various materials contained in the core layer 12 and also provides rigidity.
  • the Mohs hardness of at least the upper surface of the core layer 12 is in the range of 4 or more and 6 or less. Because the core layer 12 has both rigidity and hardness, for example, even if an impact is applied to the core layer 12, the impact is diffused throughout the core layer 12, and the impact is localized to the impact-absorbing flooring 1. spread is prevented.
  • the Mohs hardness of the core layer 12 can be measured using a Mohs hardness meter.
  • the core layer 12 of this embodiment has a higher density than the cushion layer 10.
  • the core layer 12 is, for example, a single substance of at least one of an organic material and an inorganic material, or a composite body containing both an organic material and an inorganic material.
  • Examples of the organic material included in the core layer 12 include at least one of wood and resin.
  • Examples of the core layer 12 containing wood include at least one of wood boards, plywood, cork, and wood boards.
  • Examples of the wood board include particle board (for example, one that conforms to JIS A 5908:2022) and fiberboard (for example, one that conforms to JIS A 5905:2022).
  • the fiberboard include insulation fiberboard (IB), medium density fiberboard (MDF), and hard fiberboard (HB).
  • the resin included in the core layer 12 may include at least one of polycarbonate (PC), acrylic, styrene, and polystyrene (PS).
  • PC polycarbonate
  • PS polystyrene
  • An example of the core layer 12 containing resin is a resin plate.
  • the core layer 12 may be configured as a resin plate containing two or more types of resin.
  • the two or more resins mentioned here include, for example, acrylic and styrene, but are not limited thereto.
  • examples of the inorganic material included in the core layer 12 include at least one of stone, metal, and glass.
  • stones include those containing at least one of inorganic minerals, rocks, gravel, and sand.
  • the core layer 12 containing stone any one of a gypsum board, a slate board, and a concrete board can be exemplified.
  • metals include at least one of aluminum, iron, and metal compounds containing these.
  • An example of the core layer 12 containing metal is a metal plate.
  • An example of the core layer 12 containing glass is a glass plate.
  • the core layer 12 which is a composite body for example, one in which wood flour or powder of an inorganic material is dispersed and arranged in a matrix of resin, glass, etc. can be exemplified.
  • the core layer 12 includes at least one type of inorganic material as a main component and an organic material.
  • an inorganic material is dispersed and arranged in a resin that is an organic material.
  • particles containing an inorganic material may be dispersed and arranged in the resin.
  • the resin of the core layer 12 binds the dispersed inorganic materials.
  • Core layer 12 contains more than 50% by weight of inorganic material.
  • the core layer 12 contains an inorganic material in a range of 60% by weight or more and 80% by weight or less, and contains the resin in a range of 20% by weight or more and 40% by weight or less.
  • the stone texture of the shock-absorbing flooring material 1 is mainly imparted by an inorganic material.
  • the inorganic material and the resin included in the core layer 12 can be selected as appropriate.
  • the inorganic material may include an inorganic mineral.
  • examples of the inorganic materials include calcium carbonate (CaCO 3 ), calcium sulfate (CaSO 4 ), barium sulfate (BaSO 4 ), kaolin (Al 4 Si 4 O 10 (OH) 8 ), mica, and zinc oxide (ZnO). , and at least one of silicon dioxide (SiO 2 ).
  • the inorganic material of this embodiment includes calcium carbonate (CaCO 3 ), for example.
  • the inorganic material is, for example, an extract from stone.
  • the organic material may include an organic mineral.
  • examples of the resin in which inorganic materials are dispersed and arranged include general-purpose plastics.
  • this general-purpose plastic include at least one of low-density polyethylene (LDPE), high-density polyethylene (HDPE), and polypropylene (PP).
  • LDPE low-density polyethylene
  • HDPE high-density polyethylene
  • PP polypropylene
  • the core layer 12 contains an inorganic material as a main component, the content of organic matter in the core layer 12 is suppressed.
  • the core layer 12 is configured, for example, as a single layer or a laminate in which multiple layers are stacked one on top of the other.
  • the Mohs hardness of at least the top surface of the uppermost layer in the laminate may be in the range of 4 or more and 6 or less, for example.
  • the internal structure of the core layer 12 is made uniform throughout the core layer 12. This improves the strength of the core layer 12 and provides uniform characteristics throughout the core layer 12. Further, by using the core layer 12, the surface hardness of the impact-absorbing flooring material 1 can be improved and scratch resistance can be imparted. Thereby, for example, the surface of the shock-absorbing flooring 1 can be prevented from being damaged by the movement of a wheelchair or the like. Moreover, when the core layer 12 contains resin, the binding of components such as inorganic materials dispersed in the resin can be maintained. Thereby, the rigidity of the core layer 12 can be easily improved. As a result, the core layer 12 is prevented from being damaged, such as cracking or chipping, during transportation, construction, and normal use of the shock-absorbing flooring 1.
  • the coating layer 14 protects the design layer 13 and the core layer 12 and also makes them anti-fouling.
  • the covering layer 14 is formed into a transparent plate shape, and is configured to allow the design layer 13 to be visually recognized from the outside.
  • the coating layer 14 of this embodiment absorbs light of a specific wavelength included in external light.
  • the coating layer 14 includes an ultraviolet absorbing component.
  • the material of the covering layer 14 can be selected as appropriate.
  • the design layer 13 of this embodiment includes, for example, a resin that has excellent wear resistance, heat resistance, and insulation properties.
  • the design layer 13 includes a polyester material such as polybutylene terephthalate (PBT).
  • the total thickness of the shock absorbing flooring 1 of this embodiment is greater than 15 mm and less than or equal to 30 mm.
  • the thickness of the core layer 12 in the total thickness of the shock absorbing flooring 1 is in the range of 15% or more and 40% or less.
  • the thickness of the core layer 12 in the total thickness of the shock absorbing flooring 1 is preferably in the range of 15% or more and 35% or less, and more preferably in the range of 15% or more and 30% or less.
  • the maximum value of acceleration G measured in a floor hardness test based on JIS A 6519:2018 is set to a value in the range of 60 or less.
  • the maximum value of the acceleration G is set to a value in a range of 52 or less.
  • the maximum value of the acceleration G is set to a value in a range of 45 or less.
  • the lower limit of the maximum value of the acceleration G can be set to 36 or 41, for example.
  • the maximum value of the acceleration G is set to a value in a range of 37 or less.
  • the maximum value of the acceleration G becomes a high value due to insufficient shock absorption performance. That is, it can be evaluated that the smaller the maximum value of the acceleration G, the higher the impact absorption performance.
  • the shock-absorbing flooring material 1 of this embodiment has a high impact resistance because the maximum value of acceleration G measured in a floor hardness test based on JIS A 6519:2018 is set to a value in the range of 60 or less. It is configured to have absorption performance.
  • the maximum value of the acceleration G of the impact-absorbing flooring 1 can be adjusted depending on the material and thickness of each component 10 to 14 included in the impact-absorbing flooring 1.
  • the maximum value of the acceleration G of the shock absorbing floor material 1 can be reduced.
  • the maximum value of the acceleration G of the shock absorbing floor material 1 is preferably low within a certain range, for example. For example, if the maximum value of the acceleration G of the impact absorbing flooring 1 is increased within a certain range within a range of 60 or less, the surface of the impact absorbing flooring 1 can be easily damaged while maintaining the impact absorbing performance.
  • the Asker C hardness of the cushion layer 10 is set to a value in the range of 10 to 40, so that the impact acting on the core layer 12 from the outside is suppressed. It can be absorbed well in the cushion layer 10.
  • the shock-absorbing flooring material 1 is a shock-absorbing flooring material because the maximum value of acceleration G measured in a floor hardness test based on JIS A 6519:2018 is set to a value in the range of 60 or less. 1 can be imparted with excellent shock absorbing performance, and the safety of the shock absorbing flooring material 1 can be improved. Therefore, even when using a material with relatively high hardness, it is possible to realize the impact-absorbing flooring 1 that can stably exhibit sufficient impact-absorbing performance.
  • the core layer 12 of this embodiment includes at least one inorganic material as a main component and a resin, and the inorganic material is dispersed and arranged in the resin. This makes it easier to impart hardness and rigidity to the core layer 12, for example, compared to the case where the core layer is made of only stone.
  • the Mohs hardness of at least the upper surface of the core layer 12 is in the range of 4 or more and 6 or less, for example. Thereby, excellent hardness as well as rigidity can be imparted to the core layer 12.
  • the core layer 12 having such hardness with the cushion layer 10
  • the impact transmitted to the surface of the impact-absorbing flooring 1 is diffused over a wide surface area of the impact-absorbing flooring 1, and the impact is It is possible to prevent the absorbent from reaching the absorbent bed material 1 locally. Further, the diffused impact can be appropriately absorbed by the cushion layer 10.
  • the shock absorbing flooring 1 of the present embodiment has a total thickness of greater than 15 mm and less than or equal to 30 mm, and the thickness of the core layer 12 accounts for 15% or more of the total thickness.
  • the value is in the range of 40% or less.
  • the resin included in the core layer 12 is at least one of low density polyethylene, high density polyethylene, and polypropylene.
  • the shock absorbing flooring 1 of this embodiment includes a design layer 13 that is placed over the core layer 12 so as to cover the surface of the core layer 12 on the side opposite to the cushion layer 10 side.
  • Example 1 polyethylene foam "P.E-LITE B-200" manufactured by INOAC Co., Ltd. was used.
  • a rubber sponge "C4305" manufactured by INOAC Co., Ltd. was used.
  • a rubber sponge "N145” manufactured by INOAC Co., Ltd. was used.
  • rubber sponge "E4088” manufactured by INOAC Co., Ltd. was used.
  • polyethylene foam "P.E-LITE A-8" manufactured by INOAC Co., Ltd. was used.
  • the cushion layers 10 of Examples 1 to 6 are all closed-cell foam members.
  • the thickness of the cushion layer 10 in Examples 1 to 4 and 6 was 10.0 mm.
  • the thickness dimension of the cushion layer 10 of Example 5 is 20.0 mm.
  • the thickness dimension of the soundproof layer 11 in the example flooring unit was set to 1.0 mm.
  • the total thickness of the core layer 12 and the design layer 13 in the example flooring unit was set to 4.5 mm.
  • the thickness of the coating layer 14 in the example flooring unit was set to 0.5 mm.
  • the total thickness of the shock absorbing flooring 1 according to Examples 1 to 4 and 6 was set to 16.0 mm, and the total thickness of the shock absorbing flooring 1 according to Example 5 was set to 26.0 mm.
  • the core layer 12 of Examples 1 to 6 contains 70% by weight of inorganic material and 30% by weight of resin.
  • the inorganic material included in the core layer 12 of Examples 1 to 6 includes calcium carbonate.
  • Comparative Example 1 a configuration in which the cushion layer 10 was omitted from Example 1 (a configuration consisting of only the Example flooring unit) was prepared as Comparative Example 1 (total thickness dimension: 6.0 mm).
  • the floor is made of relatively low hardness plywood (thickness 6.0 mm), resin layer (thickness 4.5 mm), and plastic film (thickness 0.5 mm) stacked in the same order from bottom to top.
  • Comparative example 2 total thickness 20.0 mm).
  • the combination of plywood and resin layer corresponds to the core layer 12 of Examples 1 to 6.
  • a commercially available flooring material made of wooden material was used.
  • Comparative Example 3 total thickness dimension: 11.0 mm.
  • a base layer made of polyvinyl chloride (PVC), an intermediate layer containing glass fiber, and a pile layer made of densely flocked pile yarn containing synthetic fibers (for example, nylon 66) are arranged from the bottom to the top.
  • PVC polyvinyl chloride
  • the example flooring units provided in Examples 1 to 6 include a soundproof layer 11, a design layer 13, and a covering layer 14 in addition to the core layer 12.
  • these constituent elements 11, 13, and 14 are considerably thinner than the core layer 12, and have lower mechanical properties. Therefore, it is considered that the shock absorbing performance of Examples 1 to 6 was mainly achieved by the combination of the core layer 12 and the cushion layer 10.
  • Comparative Example 2 a resin layer with a thickness of 4.5 mm and a plywood with a thickness of 6.0 mm are used, but in Examples 1 to 2, a core layer 12 with a thickness of less than 4.5 mm is used. It was confirmed that the impact absorption performance was lower than that of No. 6. Furthermore, it was confirmed that the cushion layer of Comparative Example 2 had a higher Asker C hardness than the cushion layers of Examples 1 to 6.
  • the following items are disclosures of preferred forms of the impact absorbing flooring of the present disclosure.
  • a core layer a cushion layer that is placed over the core layer and is more flexible than the core layer;
  • the Asker C hardness of the cushion layer is set to a value in the range of 10 or more and 40 or less, and the maximum value of acceleration G measured in a floor hardness test based on JIS A 6519:2018 is in the range of 60 or less.
  • Shock absorbing flooring set to value.
  • the Asker C hardness of the cushion layer is set to a value in the range of 10 or more and 40 or less, the impact acting on the core layer from the outside can be well absorbed in the cushion layer. Furthermore, the impact-absorbing flooring material with the above structure has a maximum acceleration G measured in a floor hardness test based on JIS A 6519:2018, which is set to a value in the range of 60 or less. Excellent shock absorbing performance can be imparted to the floor material 1, and the safety of the shock absorbing floor material 1 can be further improved. As a result, even when a material with relatively high hardness is used for the impact-absorbing flooring, the impact-absorbing flooring can be provided with sufficient impact-absorbing performance.
  • the core layer at least one inorganic material as a main component is dispersed and arranged in the resin, so that the core layer is On the other hand, it is possible to easily impart rigidity as well as hardness.
  • the core layer with such hardness with the cushion layer, the impact transmitted to the surface of the impact-absorbing flooring material is diffused over a wide surface area of the impact-absorbing flooring material, and the impact is transferred to the impact-absorbing flooring material. It is possible to prevent local damage from occurring. Further, the diffused impact can be appropriately absorbed by the cushion layer.
  • the shock absorbing flooring 1 having sufficient shock absorbing performance can be realized with a relatively thin thickness. Furthermore, by reducing the thickness of the core layer that occupies the shock-absorbing flooring, for example, while maintaining the total thickness of the shock-absorbing flooring, the thickness of the cushion layer can be increased and the shock-absorbing performance can be improved. It's easy to do.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Floor Finish (AREA)

Abstract

L'invention concerne un matériau de revêtement de sol absorbant les chocs qui comprend : une couche centrale ; et une couche d'amortissement qui est superposée sur la couche centrale et est plus souple que la couche centrale. La dureté Asker C de la couche d'amortissement est définie à une valeur dans une plage de 10 à 40. La valeur maximale de l'accélération G du matériau de revêtement de sol absorbant les chocs telle que mesurée dans un test de dureté de sol conforme à JIS A 6519 : 2018 est réglé à une valeur dans une plage de 60 ou moins.
PCT/JP2023/022916 2022-06-24 2023-06-21 Matériau de revêtement de sol absorbant les chocs WO2023249047A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2022102250 2022-06-24
JP2022-102250 2022-06-24
JP2023100143A JP2024002946A (ja) 2022-06-24 2023-06-19 衝撃吸収床材
JP2023-100143 2023-06-19

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WO2023249047A1 true WO2023249047A1 (fr) 2023-12-28

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PCT/JP2023/022916 WO2023249047A1 (fr) 2022-06-24 2023-06-21 Matériau de revêtement de sol absorbant les chocs

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TW (1) TW202417721A (fr)
WO (1) WO2023249047A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096689A (ja) * 1999-09-30 2001-04-10 Shinko Kasei Kk 建材用シート
JP2002105874A (ja) * 2000-10-03 2002-04-10 Toppan Printing Co Ltd オレフィン系床材
JP2010047979A (ja) * 2008-08-21 2010-03-04 Eidai Co Ltd 木質床材
JP2016160590A (ja) * 2015-02-27 2016-09-05 大建工業株式会社 衝撃吸収材、衝撃吸収化粧材、床材及び壁材

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001096689A (ja) * 1999-09-30 2001-04-10 Shinko Kasei Kk 建材用シート
JP2002105874A (ja) * 2000-10-03 2002-04-10 Toppan Printing Co Ltd オレフィン系床材
JP2010047979A (ja) * 2008-08-21 2010-03-04 Eidai Co Ltd 木質床材
JP2016160590A (ja) * 2015-02-27 2016-09-05 大建工業株式会社 衝撃吸収材、衝撃吸収化粧材、床材及び壁材

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