Floor sheet for vehicle, floor structural body for vehicle, and method for constructing floor structural body for vehicle

Abstract

Provided is a floor sheet for vehicles that enables a laying operation to be easily carried out, and has superior detachability when a detachment manipulation is required and also has superior handleability and durability. A floor sheet for vehicles to be laid on a floor face of a vehicle, including: a floor sheet main body made of a flame retardant rubber and formed to have a long-sheet shape; and a tacky layer made of an acrylic tacky material overlaid directly or indirectly on the back face of the floor sheet main body so as to have a thickness of no less than 50 µm and less than 500 µm. The floor sheet main body may be formed from a flame retardant rubber composition, and the flame retardant rubber composition may contain a rubber component and an inorganic fire retardant in an amount of no less than 50 parts by weight and less than 90 parts by weight with respect to 100 parts by weight of the rubber component. The inorganic fire retardant may be aluminum hydroxide and / or antimony trioxide. The tacky layer may have a cohesive force of no less than 20 N / 25 mm and less than 100 N / 25 mm.

Description

technical field [0001] The present invention relates to a vehicle floor sheet, a vehicle floor structure, and a construction method for the vehicle floor structure. Background technique [0002] As a floor sheet for vehicles, the floor sheet for railway vehicles laid on the floor surface of a railway vehicle is known, for example. The floor sheet for railway vehicles is laid by bonding an adhesive to the floor surface of the vehicle. Here, generally, the laying method of the floor sheet for railway vehicles is as follows: First, spray a solvent-based adhesive on the floor surface of the vehicle and the back surface of the floor sheet for the vehicle, and dry the adhesive to a certain extent. The vehicle floor sheet is bonded to the floor surface of the vehicle. [0003] However, in the above-mentioned laying method, there is a fear of adverse effects on workers due to volatilization of the solvent of the solvent-based adhesive, so attention must be paid to the ventilation ...

AI Technical Summary

Problems solved by technology

Here, the thickness of the adhesive layer is, for example, 0.5 to 2.0 mm. However, it has been found that when the thickness of the adhesive layer composed of the unvulcanized butyl rubber composition is 0.5 mm, it may not be possible to obtain The problem of sufficient strength (adhesion) of the floor sheet

Therefore, in order to obtain sufficient strength, it is necessary to increase the thickness of the adhesive layer, but if the thickness of the adhesive layer is increased, problems such as manufacturing cost will arise.

That is, the usage amount of the unvulcanized butyl rubber composition is increased due to thickening of the adhesive layer, thereby increasing the manufacturing cost

In addition, for example, a floor sheet for railway vehicles is generally a sheet with a length of 20 m to less than 30 m and a thickness of 2 mm to less than 6 mm, and the sheet is wound along the longitudinal direction and stored in a rolled state. , transportation, since the thickness of the adhesive layer becomes thicker as described above, there is a problem that the mass and volume of the vehicle floor sheet increase, and storage and transportation become difficult.

In addition, since the unvulcanized butyl rubber composition is not cross-linked, it has the problem of poor long-term deterioration properties such as thermal aging, high-temperature deterioration, and high-humidity deterioration as a product without any measures.

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