Cushion material

Abstract

Provided is a seat cushion material having a structure in which a second resin layer is laminated on a first resin layer, which can improve both seat stability and front deflection suppressing effect while maintaining predetermined body pressure dispersing performance. The first resin layer is provided with at least one bottomed or bottomless hole, and the second resin layer is provided at least in a region opposite to the above-mentioned hole by penetrating in the thickness direction of the second resin layer and at a predetermined intersection. At least one cutting pattern formed by at least three linear through-cutting grooves intersecting with each other. A cantilever-shaped projecting piece composed of an area between adjacent linear penetrating cutting grooves of the cutting pattern is disposed on the at least one hole portion of the first resin layer, and the projecting piece and the root portion of the projecting piece are arranged on the at least one hole portion of the first resin layer. The peripheral portion of the continuous tab region is configured to be elastically deformable. The tab and / or the peripheral portion of the tab region is configured to face the hole so as to cover at least a part of the opening edge of the hole and / or the inner wall of the hole in the first resin layer when a vertical load acts on the dicing pattern elastic deformation.

Description

technical field [0001] The present invention relates to a cushion material having a body pressure dispersing effect suitable for use in seats, car seats, vehicle seats, mattresses, and the like. Background technique [0002] Seat cushion materials that improve body pressure dispersibility by laminating a structure of relatively low-repulsion polyurethane foam on the surface of a polyurethane foam having a specific surface structure have been widely used. [0003] In Patent Documents 1 and 2, the present applicant proposes a cushion material obtained by forming a plurality of block elements divided by grooves on the surface of a cushion base material made of soft synthetic resin foam such as urethane foam , and a seat material such as low-rebound polyurethane foam is laminated on the upper surface of the seat cushion base material. [0004] In Patent Document 1, grooves are formed in the seat cushion base material in such a way that the depth varies according to the contour ...

AI Technical Summary

Problems solved by technology

When the front offset occurs, it is easy to have the following problems: the occupant slips from the cushion material; or, further, due to pressure on the buttocks of the occupant from the seat portion as a position where the buttocks of the occupant are in contact with the cushion material, the occupant's buttocks Internal organs and respiratory organs are oppressed, and the balance of physical condition is disturbed

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