Sage Journals: Discover world-class research

Abstract

An analysis of the heat transfer effectiveness of heating technologies pertaining to false twist yarn texturing has shown that contact heating used in modern commercial machines is limited as to further increases of the heat transfer rate. With a condensation heating process using high pressure steam, yarn temperature rise time can be reduced by a factor of ten when the steam condenses only on the outer yarn surface. A con densation heating chamber, a friction texturing system and a series of texturing ex periments conducted with them helped to establish the feasibility of such heating period reduction. With a condensation heating system, textured yarns possessing sat isfactory crimp and mechanical quality can be produced with much shorter heater residence times than currently used. Required minimum cooling zone residence times are also reduced due to evaporation of condensate on the yarn surface upon exit from the condensation chamber.

Get full access to this article

View all access options for this article.

References

Anahara, M. , Hokudo, T. , Fujita, T. , and Kokubu, T. , Studies on Faise-Twist Texturing Method, J. Textile Machinery Soc. Jpn. 33, T53-T67 ( 1980).

Bell, C.E. , and Backer, S. , Mechanics of Thermoplastic Yarns, Part VII, Cyclic Behavior during Pin-Spindle False-Twist Texturing, Textile Res. J. 48, 722-732 ( 1978).

Curran, Edmund C. , Design of a High Pressure Steam Chamber for Heat Setting in False-Twist Texturing , MS thesis, Department of Mechanical Engineering, Massachusetts Institute of Technology, 1987.

Carslaw, H.S. , and Jarger, J.C. , "Conduction of Heat in Solids," 2nd ed., Oxford University Press, London, 1959.

Egambraram, T. , Agigy, E.M. , and El-Shiekh , A. , Heat Transfer in False-Twist Texturing, Textile Res. J. 44, 803-812 (1974).

Forsberg, M. , Ferrier, R. , and Bruening, J. , Instabilities in High Speed Texturing, Winter Conference, Textured Yarn Association of America, Greenville, 1983.

Isaacs, G.E. , and Atkinson, C. , Optimization of Process Performance and Yarn Quality at Current Texturing Speeds, Developments in Texturing, Shirley Institute Publication , S46, 159-188, 1982.

Jones, C.R. , and Mason, T. , Heat Transfer in a False-Twist Bulking Process, J. Textile Inst. 62, 147-165 (1971).

Lunenschloss, J. , Development Trends in the Texturing of Synthetic Filament Yarns, Textiltech. 32, 4, 232-235 ( 1982).

10.

Li, Shipeng , Heat Transfer to Yarn in False-Twist Texturing, Doctoral thesis, Dept. of Mechanical Engineering, Massachusetts Institute of Technology , Oct. 1988.

11.

Smith, S.C. , On the Feasibility of Using Dielectric Heating in False-Twist Texturing of Yarns, Technical Report, Department of Mechanical Engineering , MIT, 1977.

12.

Smith, R.L. , Pieters, R. , and Morrison, M.E. , "Fundamentals of False-Twist Texturing of Thermoplastic Continuous Filament Yarns," Trans. Soc. Rheology 16, 557-576 (1972).

13.

Wang, S-Y. , Study of Heat Setting Filament Yarn Using CO2 Laser, J. E. China Inst. Textile Sci. Tech., 35-47 (1984).

14.

Wang, W-L. , The Effect of Preheating in the False-Twist Draw-Texturing Process , J. Textile Inst. 4, 221-223 (1983).

Texturing of Thermoplastic Yarns

Abstract

Get full access to this article

References