To prevent the occurrence of a local overstrain in a net material and raise the reliability of the net material.
This net material 10 is obtained by treating each end part 15 of a net material having a three-dimensional structure by a thermal fusing means such as vibrating fusion so that the end part 15 is hardened without cushioning properties as compared with those of a site located on the inside of the end part 15. Thereby, when an end part engaging member 20 as an engageable member is installed in a frame 30 constituting the structure so that an inserting port 21a of an inserting gap 21 faces in a specific direction, the engagement can be carried out simply by inserting the end part 15 into the inserting gap 21. All the site of the end part 15 is inserted into the inserting gap 21 and a force is applied to an engaging piece 23 on a face without a specific spotlike site when a load is applied. As a result, the damage to the net material 10 caused by an excessive force applied to a specific site can be prevented as opposed to a conventional method.
FUJITA YOSHINORI
OGURA YUMI
CHIGARA KAZUYOSHI
OSHITA HIROKI
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