Rapid Dyeing Machinery and Techniques for Polyester Yarns

Siegrist, G.; Liddiard, Alan G.

doi:10.1111/j.1478-4408.1973.tb03123.x

Cited by 11 publications

(4 citation statements)

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“…With polyester becoming the major fibre worldwide, it has received considerable attention with regard to so‐called rapid dyeing techniques [25]. However, the term ‘rapid dyeing’ was used in this paper to indicate the possibility of RFT production through relatively short dyeing cycles, rather than the original concept of steep ramps and high‐circulation pumps, as discussed over 20 years previously [26]. Many of the machine developments that had occurred, based on dyeing research, were summarised.…”

Section: Practical Applicationsmentioning

confidence: 99%

Does dyeing practice need dyeing theory?

Park¹,

Shore

2007

Coloration Technology

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It has been indicated that much of the practical data for dyeing processes available has never been exploited by the dye application industry, although dye research and development programmes have often identified targets with successful outcomes. Products and processes originated by dye makers have had a major impact on the success of practical dyeing, resulting in improved reproducibility and right-first-time processing. Dyeing theory research has consumed substantial resources invested by dye makers and academic institutions, but many of these studies have failed to yield useful data that could be applied directly in practical dyeing systems. The generation of detailed standard operating procedures has provided the conditions for achieving effective control over the practical dyeing process, an objective that was once thought to be attainable eventually by the refinement of dyeing theories.

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Section: Practical Applicationsmentioning

confidence: 99%

Does dyeing practice need dyeing theory?

Park¹,

Shore

2007

Coloration Technology

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“…The limiting steepness of the ramp which will still give a level result is a function of the machine characteristics as well as the fibre to be dyed. Thus, with polyester fibre, where a ramp in the region of 1 to 2 "C/min was normal on B conventional package-dyeing machine, it is now possible to consider ramps of up to 16 "C/min when using a rapid-dyeing version [5,21] . The sensitivity to temperature of the rate of diffusion is much greater when dyeing acrylic fibres with basic dyes than when applying disperse dyes to polyester fibres, so that careful definition of the optimum start temperature is more important than in the former case.…”

Section: Injzuence Oj' Ramp On Rate Of Dyeingmentioning

confidence: 99%

“…Circulation rates above 6 to 8 cycles per minute were not considered t o be justifiable [ 1 7 ] , but in a survey of machinery available, flow rates of 40 to 200 1 kg-' min-' , with 6 to 20 cycles per minute, were quoted [ 5 ] . as representative of current practice in conventional package-dyeing machines of modern design, with a complete circulation of the dyebath every 30 seconds.…”

Section: Introductionmentioning

confidence: 99%

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Package Dyeing of Acrylic Fibre Yarn: Important Parameters which Influence Level Dyeing

Heane¹,

Hill²,

Park³

et al. 1979

Journal of the Society of Dyers and Colourists

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Flow rate, ramp (constant rate of temperature rise), and package density are recognized to be particularly important for obtaining uniform uptake in the package dyeing of acrylic fibre yarns. This paper is concerned with the contribution of these three parameters to levelness in this system. An attempt is made to define empirical mathematical relationships between these variables and the observed rate of dyeing, in order to be able to specify those values of these parameters which would be expected to give rise to unlevel dyeings.Linear relationships were ,found between these parameters and the rate oj cxhaustion per circulation of the dyebath, expressed either as the overall rate or as separate rates for the two successive stages of the exhaustion process (attributed to adsorption at the surface of the fibre and diffusion into the interior). The equations relating rate of exhaustion to package density, ramp and the reciprocal of the rate of liquor flow can be combined into a single equation. This enables the relative effects of these variables to be calculated. For example, the equation can be used to decide which combination o f ramp and flow rate will give a pre-determined rate o f exhaustion by a package ofgiven density. In a similar way, the correspondirig equation relating the instrumental criterion o.f degree of unlcvelness to package density, ramp and rate of pow forms a convenient means of predicting the effects that tlrese three variables will have on the possibility that unlevel dyeing will occur.

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Textile color application processes

Aspland

1983

Color Research & Application

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Rapid Dyeing Machinery and Techniques for Polyester Yarns

Cited by 11 publications

References 0 publications

Does dyeing practice need dyeing theory?

Does dyeing practice need dyeing theory?

Package Dyeing of Acrylic Fibre Yarn: Important Parameters which Influence Level Dyeing

Textile color application processes

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