Waterproof screw, sealing material, method for structure installation, and structure for structure installation
AssigneeNitto Denko Corporation
InventorsHiroki Fujii, Tetsuro Taga, Yoshiaki Mitsuoka
Life of this patent
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Abstract
A waterproof screw includes a screw member including a head portion and a shank portion and a sealing material covering the circumference of the shank portion. The sealing material has a shear storage elastic modulus G′ at 25° C. and a frequency of 1 Hz of 50000 Pa or less.
Claims8
A waterproof screw comprising:
- a screw member including a head portion and a shank portion and
- a sealing material covering the circumference of the shank portion, wherein
- the sealing material has a shear storage elastic modulus G′ at 25° C. and a frequency of 1 Hz of 50000 Pa or less.
A sealing material covering a shank portion of a screw member to be used so as to seal an insertion portion for the shank portion, wherein
- the sealing material has a shear storage elastic modulus G′ at 25° C. and a frequency of 1 Hz of 50000 Pa or less.
A method for structure installation, installing a structure on a roof, comprising:
- a structure disposing step of disposing the structure on the roof and
- a structure fixing step of fixing the structure to the roof by a waterproof screw, wherein the waterproof screw comprises:
- a screw member including a head portion and a shank portion and
- a sealing material covering the circumference of the shank portion, and
- the sealing material has a shear storage elastic modulus G′ at 25° C. and a frequency of 1 Hz of 50000 Pa or less.
A structure for structure installation in which a structure is installed on a roof, wherein
- the structure is disposed on the roof and
- the structure is fixed to the roof by a waterproof screw, and
- the waterproof screw comprises:
- a screw member including a head portion and a shank portion and
- a sealing material covering the circumference of the shank portion, and
- the sealing material has a shear storage elastic modulus G′ at 25° C. and a frequency of 1 Hz of 50000 Pa or less.
Dependencies are inferred from the claim text.