To prevent a harmful recess-shaped warp by placing a lower spacer formed in a frame according to the outer periphery of a pavement material on a bottom, stacking the pavement materials with their surface layer side downside, and installing an upper spacer on an upper center.
A rectangular frame-shaped lower spacer 4 with a hole 3 of the size corresponding to the contour shape of the elastic pavement material 2 in the center is placed on a bottom of a packing box 1. The elastic pavement materials 2 are stacked on the lower spacer 4 with their surface layer side downside, and a weight 6 is loaded at the center. The warp generated by the self weight is given to the elastic pavement material 2 by using the lower spacer 4, and execution can be achieved without any troubles by making the elastic pavement material in the projecting shape during the execution. A rectangular upper spacer 8 which is smaller than the hole 3 is loaded and a packing box 1 is closed. The warp can be given to the elastic pavement materials 2 by pressing the center through the upper spacer 8 even after the packing.
OGAWA MITSURU
INAYAMA YASUHIRO
KATO HISAKI
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