scope:

This Japanese Industrial Standard specifies requirements for the fiber structures comprising a spacial structure obtained by welding or connecting of continuous fibers of thermoplastic resin in three dimensional directions (hereafter referred to as thermoplastic 3D network fiber structures).

This Standard is applicable to thermoplastic 3D network fiber structures used for the cushioning of load-bearing products such as bedding items, chairs, seats of moving bodies, etc.

The classification of thermoplastic 3D network fiber structures by product type is shown in Table 1.

This Standard is not applicable to:

a) single layer products 5 mm or less in thickness ¹⁾ and laminated products 5 mm or less in thickness;

b) raised fibers or pile fibers used for hook-and-loop fasteners, floor coverings, etc.;

c) multiaxial woven fabrics such as triaxial woven fabric and quadraxial woven fabric;

d) thermoplastic 3D network fiber structures used for construction materials;

e) laminated products consisting of thermoplastic 3D network fiber structures and other materials.

Note ¹⁾ For these products, the test piece specified in Annex B may be used to determine characteristic values of test piece according to the methods given in Clause 9, in which case, however, the classifications specified in Clause 4 cannot be applied.