Adhesive composition and adhesive sheet for slide rail, and method for fixing slide rail

摘要

An adhesive composition for slide rail exhibits excellent workability in attaching a slide rail to a vehicle body and has a strong adhesive force after heating, the magnetic flux density of which can be lowered, which sustains the strong adhesive force after heating and then returning to room temperature so as to allow the firm fixation of the slide rail to the vehicle body, and which can lower the volume of the noise caused by opening/closing of a door. Specifically disclosed is an adhesive composition for slide rail which includes a hot-melt adhesive and a ferromagnetic substance, wherein the composition shows a density at 20° C. of 1.4-4.5 g/cm3 and has such magnetic properties that the magnetic flux density of an adhesive sheet, that is obtained by molding the composition, at a position 1 cm apart from the surface of the adhesive sheet is 10 mT or more.

主权项

1. An adhesive composition for a slide rail, which comprises a hot-melt adhesive and a ferromagnetic material, wherein a density at 20° C. of the composition is 1.4 to 4.5 g/cm3, and the composition has a magnetism such that the magnetic flux density at a position which is 1 cm away from a surface of an adhesive sheet obtained by forming the composition is 10 mT or more, the ferromagnetic material is a magnetic powder, the mixing ratio of the magnetic powder is in the range of 92:8 to 45:55 in volume ratio of the hot-melt adhesive and the magnetic powder, and the surface magnetic flux density after heating at 180° C. for 40 minutes is not more than 3 mT, and wherein the adhesive composition does not contain a foaming agent.