Textiles: spinning – twisting – and twining – Strand structure – Longitudinal variation
Patent
1989-07-05
1990-09-11
Petrakes, John
Textiles: spinning, twisting, and twining
Strand structure
Longitudinal variation
57205, 57208, 57245, 57247, 57288, 57908, 428370, 428373, D02G 324, D02G 102, D02G 326, D02G 334
Patent
active
049551892
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a worsted yarn-like false-twisted yarn. More particularly, the present invention relates to a worsted yarn-like false-twisted yarn having a high resilience while showing a soft touch.
BACKGROUND ART
As the conventional false-twisted yarn having a soft touch and an appropriate resilience, there is known a mixed filament false-twisted yarn comprising at least two kinds of filaments having a different denier and having entangled portions appearing intermittently in the longitudinal direction thereof, in which large-denier filaments form mainly a core portion and small-denier filaments form mainly a sheath portion (see, for example, Japanese Examined Patent Publication No. 47-18060, Japanese Examined Patent Publication No. 60-22092, and Japanese Unexamined Patent Publication No. 55-112325).
In this false-twisted yarn, a bundling property is given by such entangled portions and a bulkiness is given by open portions located between two adjacent entangled portions. Although this processed yarn has a soft touch, the resilience is poor and the touch is different from that of a worsted yarn-like processed yarn.
A false-twisted yarn having a worsted yarn-like touch, in which the touch of the above-mentioned mixed filament false-twisted yarn is improved, is proposed in, for example, Japanese Examined Patent Publication No. 61-19733 and Japanese Unexamined Patent Publication No. 55-98931. This yarn is a false-twisted yarn having a two-layer structure, in which filaments having a smaller denier are substantially continuously wrapped around larger-denier filaments constituting mainly the core in the form of an alternately twisted yarn.
A fabric formed by using this type of alternately twisted yarn-like processed yarn has both a soft touch like that of a worsted fabric and a good resilience. Especially, a thick woven fabric having a weight of at least 200 g/m.sup.2 is suitable for use as a material of a product for autumn and winter wear because the fabric has a warm feel in addition to the above-mentioned characteristics.
To obtain the same effects as found in the above-mentioned thick woven fabric by applying this alternately twisted yarn-like processed yarn to a medium-thickness woven fabric having a weight of 100 to 150 g/m.sup.2 (hereinafter referred to as "medium-thickness woven fabric"), the demand for which is now increasing, the inventors used small-denier filaments as the constituent filaments, and as a result and contrary to our expectations, we found that the obtained medium-thickness woven fabric had an extremely poor resilience and bulkiness.
To overcome this defect, we varied the thickness in the large-denier filaments and/or small-denier filaments and prepared various, alternately twisted yarn-like processed yarns, but a worsted fabric-like medium-thickness woven fabric having a soft touch, a good bulkiness, and a satisfactory resilience could not be prepared from these processed yarns.
DISCLOSURE OF THE INVENTION
Therefore, a primary object of the present invention is to provide a worsted yarn-like false-twisted yarn which is suitable for the formation of a worsted fabric-like medium-thickness woven fabric having a soft touch, a good bulkiness, and an appropriate resilience.
The inventors carried out research with a view to attaining this object, and found that a false-twisted yarn in which alternately twisted yarn like wound portions are intermittently formed in the longitudinal direction, and entangled portions where constituent filaments are tightly entangled and open portions where constituent filaments are arranged without being restrained by one another, appear among the alternately twisted yarn-like wrapped portions, gives a worsted fabric-like medium-thickness woven fabric having a soft touch, a good bulkiness, and an appropriate resilience, and the present invention is based on this finding.
More specifically, in accordance with the present invention, there is provided a worsted yarn-like false-twisted yarn composed of at least two kinds of
REFERENCES:
patent: 3577873 (1971-05-01), Waters
patent: 3691750 (1972-09-01), Waters
patent: 4296597 (1981-10-01), Tani et al.
patent: 4307565 (1981-12-01), Sasaki et al.
patent: 4365466 (1981-12-01), Horiuchi et al.
Awata Muneaki
Taniguchi Katsutoshi
Yanagihara Masaaki
Petrakes John
Teijin Limited
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