抄録
An attempt has been made to represent the crease recovery angle in any direction as a function of values in the warp and weft. The results of this attempt make possible to estimate the degree of interaction between warp and weft yarns at the points of their intersection.
The crease recovery angle along any direction of a textile fabric is described as follows:
β=1/sinθ+cosθ(βW sinθ+βF cos θ)
βW=cos-1{(1-cosωW)cot2θ-cosωW}
βF=cos-1{(1-cosωF)tan2θ-cosωF}
ωW=AW 2θ/π.ωF=AF(π-2θ)/π
where, θ is the angle between crease line and the warp yarn; (π-AW) and (π-AF) are the crease recovery angles of warp and weft, respectively. In fabrics composed of loosely crossed yarns, good agreement with experimental data is obtainable.
It is helpful to use the degree of deviation between theoretical and experimental data as a measure of the tightness of fabrics. There are comparable relations between anisotropy of crease recovery and flexural rigidity of textile fabrics.
