Title:
衝撃吸収床材
Document Type and Number:
Japanese Patent JP7415691
Kind Code:
B2
Abstract:
To provide an impact absorption floor material excellent in both of impact absorbing properties and load bearing properties.SOLUTION: An impact absorption floor material 110 for suppressing a fracture of a thighbone which is caused by impact due to falling of a user includes an upper-floor material 111 having a foam structure with an expansion ratio of 2 or more and 5 or less, and a floor substrate material 112 provided under the upper-floor material 111 and having a foam structure with an expansion ratio of 3 or more and 20 or less. The floor substrate material 112 has a dynamic viscoelasticity Tanδ at a measuring frequency 1 Hz at 25°C of 0.1 or more and 0.7 or less, and a complex elastic modulus E* of 0.3 Mpa or more and 10 MPa or less.SELECTED DRAWING: Figure 1
Inventors:
Mamiko Sano
Application Number:
JP2020042300A
Publication Date:
January 17, 2024
Filing Date:
March 11, 2020
Export Citation:
Assignee:
TOPPAN Holdings Co., Ltd.
International Classes:
E04F15/18; E04B1/98
Domestic Patent References:
| JP8049398A | ||||
| JP10234242A | ||||
| JP2005060552A | ||||
| JP2020002202A | ||||
| JP2020071225A | ||||
| JP201567787A |
Attorney, Agent or Firm:
Hajime Hirose
Toru Miyasaka
Toru Miyasaka