摘要:
The invention discloses a continuous process for the nobilization of yarns dyed on cones, comprising a phase during which the yarn (10, 46) continuously runs through an essentailly cylindrical treatment chamber (9, 41) and at the same time a phase of letting into the treatment chamber a gasseous fluid under pressure through one or more openings (13), which create a turbulence movement of the fluid within said chamber. The device performing said process comprises a prismatic body (2) wherein there are a treatment chamber (9, 41) into which the gasseous fluid under pressure is forced to stream and a lid (7, 43) sliding over the treatment chamber, which is activated by mechanical, electrical or pneumatic means.
摘要:
There is disclosed a yarn re-structuring method and apparatus for modifying the structure of a spun yarn in order to improve its properties, in which the yarn is subjected to the action of successive false twisters (6a, 6b) in order to impart a permanent modification to the structure of the yarn, in which there is a tandem arrangement of first and second oppositely acting false twisters (6a, 6b), with the first false twister (6a) acting to at least partially unwind the original twist in the yarn and the second false twister (6b) acting at least partly to restore or to increase the original twist in the yarn. This action on the spun yarn improves the properties of softness and bulkiness, while retaining acceptable performance of the yarn in other characteristics.
摘要:
There is disclosed a yarn re-structuring method and apparatus for modifying the structure of a spun yarn in order to improve its properties, in which the yarn is subjected to the action of successive false twisters (6a, 6b) in order to impart a permanent modification to the structure of the yarn, in which there is a tandem arrangement of first and second oppositely acting false twisters (6a, 6b), with the first false twister (6a) acting to at least partially unwind the original twist in the yarn and the second false twister (6b) acting at least partly to restore or to increase the original twist in the yarn. This action on the spun yarn improves the properties of softness and bulkiness, while retaining acceptable performance of the yarn in other characteristics.
摘要:
A sewing thread that is excellent in high-speed sewability and automatic sewing characteristics. In particular, a sewing thread comprising a plurality of under-twist yarns provided with upper twist, the yarns each consisting of a sheath-core structure yarn constituted of a multifilament of two or more filaments, wherein portion of the sheath-core structure yarn protrudes as loops on a yarn surface, the loops consisting of 50 to 300 loops of 0.7 to less than 1.2 mm length per m and 10 or less loops of 1.2 mm or more length per m, and wherein the yarns have a strength of 4 to 6 cN/dtex.
摘要:
The present invention relates to an interlacing nozzle comprising a yarn inlet (Y), a yarn outlet (Ye), a fluid nozzle (I) arranged between the yarn inlet and the yarn outlet wherein fluid is ejected from the fluid nozzle to a running multifilament yarn (Yt) introduced from the yarn inlet so as to combine and entangle a core yarn (Y1) and a sheath yarn (Y2), and a separator (C) provided between the yarn inlet (Y) and the fluid nozzle (I) so as to separate the core yarn and the sheath yarn.
摘要:
The present invention pertains to a process for manufacturing one or more fluoropolymer fibres, said process comprising the following steps: (i) providing a liquid composition [composition (C1)] comprising: —at least one fluoropolymer comprising at least one hydroxyl end group [polymer (FOH)L and—a liquid medium comprising at least one organic solvent [solvent (S)]; (ii) contacting the composition (C1) provided in step (i) with at least one metal compound [compound (M)] of formula (I) here below: X4-mAYm (I) wherein X is a hydrocarbon group, optionally comprising one or more functional groups, m is an integer from 1 to 4, A is a metal selected from the group consisting of Si, Ti and Zr, and Y is a hydrolysable group selected from the group consisting of an alkoxy group, an acyloxy group and a hydroxyl group, thereby providing a liquid composition [composition (C2)]; (iii) submitting to at least partial hydrolysis and/or polycondensation the composition (C2) provided in step (ii) thereby providing a liquid composition [composition (C3)] comprising at least one fluoropolymer hybrid organic/inorganic composite; (iv) processing the composition (C3) provided in step (iii) by electrospinning thereby providing one or more fluoropolymer fibres; (v) drying the fluoropolymer fibre(s) provided in step (iv); and (vi) optionally, submitting to compression the fluoropolymer fibre(s) provided in step (v) at a temperature comprised between 50° C. and 300° C. The invention also pertains to a process for the manufacture of said fluoropolymer fibre(s) and to uses of said fluoropolymer fibre(s) in various applications.
摘要:
A method for the production of a tampon (32) formed of a blend of regenerated solid cellulosic viscose fibres, said blend including a first set of fibres having a first cross-sectional characteristic and a second set of fibres having a second cross-sectional characteristic, said first cross-sectional characteristic being different to said second cross-sectional characteristic which includes the improvement of forming said blend by forming a tow of viscose rayon fibres having the same blend ratio of first and second sets of fibres as is required in the tampon by spinning viscose dope through jet means (7) to form a plurality of filaments (9), the jet means having a plurality of dimensionally controlled holes pierced therein. In this way a plurality of different fibre cross-sectional shapes or sizes are simultaneously formed directly in a tow (10A) by spinning the viscose dope through the jet means having the required plurality of different shaped or sized holes pierced therein.
摘要:
A system to improve stuffer box crimp uniformity by continuously monitoring and controlling the cross-section characteristics of moving tow lines as they enter a stuffer box crimper and the product.