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Title:
FLOOR UNDERLAY SHEET, FLOOR STRUCTURE AND CONSTRUCTION METHOD
Document Type and Number:
Japanese Patent JP2021147896
Kind Code:
A
Abstract:
To provide a floor underlay sheet to be laid between the double floor panel and the floor finishing material that can be used for applying the finishing material on the double floor panel without causing swelling of the floor finishing material and other appearance defects, and in which the joints of the double floor panel are less likely to appear on the surface of floor finishing material.SOLUTION: The floor underlaying sheet includes a vinyl chloride resin layer and a glass net or a glass non-woven fabric and a foamed vinyl chloride resin layer. The residual dent (B method) measured by JIS A 1454 is 0.5 ± 0.05 mm. When a 50 mm square sheet is compressed at a compression rate of 1 mm/min using a compression tester and a 25 mm Φ compression jig, the compressive strength when the strain reaches 50% is 0.7 ± 0.3 MPa. The rigidity measured by the Taber Stiffness Tester (ASTM D747-61T) is 200 to 500 g/cm at 5°C and 100 to 300 g/cm at 20°C.SELECTED DRAWING: Figure 1

Inventors:
USUI KENICHI
Application Number:
JP2020049573A
Publication Date:
September 27, 2021
Filing Date:
March 19, 2020
Export Citation:
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Assignee:
TAJIMA ROOFING INC
International Classes:
E04F15/18
Attorney, Agent or Firm:
Atsushi Aoki
Shinji Mitsuhashi
Naori Kota
Satoshi Deno
Masatoshi Takahashi
Atsushi Ebiya