In this paper, the configuration of seam puckers was studied. The results obtained were as follows:
(1) Puckers were given to fabrics by the plates with a sine curve pattern. The profiles of puckers were measured at various distances from the plate and the spectral analysis was done. The configuration of puckers given by the pattern plate was shown by the spectral density.
(2) The minimum wave length (λ) of puckers was observed from the spectral density. The curve relation between (λ-λ
0) +correction term and χ/ (1-S)
2was shown on a semi- log graph in our experimental conditions. Where, λ
0; wave length of the pattern plate, χ; distance from the pattern plate, S; fabric shrink age ratio given by the pattern plate.
(3) Under some assumptions, λ of seam puckers agreed well with the result mentioned above.
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