Twist and Linear Density Coefficient of Variation-Length Curves of Polyester/Cotton Yarns Spun by Different Processes

1992 ◽  
Vol 62 (2) ◽  
pp. 115-120 ◽  
Author(s):  
A. M. Manich ◽  
M. D. de Castellar ◽  
A. Barella
Keyword(s):  
Linear Density ◽  
Sufficient Accuracy ◽  
Yarn Twist ◽  
Coefficients Of Variation ◽  
Cotton Yarns ◽  
Polynomial Expression ◽  
Spinning Process ◽  
Density Irregularity ◽  
Density Coefficient ◽  
Blend Proportion

The coefficients of variation-length curves for yarn twist and linear density have been determined for polyester/cotton yarns spun by ring, rotor, and friction processes as a function of blend proportion, yarn twist, and yarn linear density. The influence of each of these parameters on twist and linear density irregularity is described according to the spinning process. The coefficients of variation length curves can be mathematically represented with sufficient accuracy by a polynomial expression including first-and second-order terms.

Influence of Construction of Textile Material on Performance of Warp Sizing

2012 ◽  
Vol 535-537 ◽  
pp. 1408-1412
Author(s):  
Yun Tong
Keyword(s):  
Cross Section ◽  
Driving Force ◽  
Linear Density ◽  
Breaking Strength ◽  
Textile Material ◽  
Capillary Effect ◽  
Yarn Twist ◽  
Spinning Process ◽  
Series Of Experiments ◽  
Wetting Process

Warp sizing is the precondition of weaving for most textile material. A key fact discussed in this paper is capillary effect, by means of a series of experiments known as observation of suction lift of various types of yarn under non-wetting and wetting condition, a longitudinal and cross section of warp under microscope, tensile breaking strength of sized warp compared between non-wetting sized warp and pre-wetting sized warp, desizing time, etc, it is concluded that the capillary effect is affected by textile material construction such as linear density of warp, spinning process, yarn twist, absorbency .etc, is inherent driving force for size glue penetrating into warp so as to make weaving possible, pre-wetting process will be greatly helpful for penetrating in warp slashing, resulted from capillary effect being enhanced

Comparison of the Dye Binding and Kjeldahl Methods for Protein Analysis of Nonfat Dry Milk and Ice Cream

1969 ◽  
Vol 52 (1) ◽  
pp. 138-142
Author(s):  
J W Sherbon ◽  
H A Luke
Keyword(s):  
Protein Content ◽  
Ice Cream ◽  
Protein Analysis ◽  
Direct Analysis ◽  
Sufficient Accuracy ◽  
Coefficients Of Variation ◽  
Dry Milk ◽  
Dye Binding ◽  
Nonfat Dry Milk

Abstract Ten samples of nonfat dry milk and five samples of vanilla ice cream mix were analyzed in quadruplicate in seven laboratories for protein content by the dye binding method. Laboratory and laboratory times sample effects were significant at the 0.5% level but the coefficients of variation were 1% or less. Comparison of average results obtained by dye binding to those obtained by Kjeldahl show the former to have sufficient accuracy. Direct analysis of NFDM was found to give essentially the same results as analysis of the reconstituted product. It is recommended that the dye binding methods for protein in nonfat dry milk and ice cream mix be adopted as official first action.

Modification of Cotton Yarns for Smart Socks Production

2019 ◽  
Vol 800 ◽  
pp. 331-335
Author(s):  
Ieva Bake ◽  
Vineta Afanasjeva ◽  
Silvija Kukle
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Linear Density ◽  
Sol Gel ◽  
Antimicrobial Properties ◽  
Mean Value ◽  
Cotton Yarn ◽  
Yarn Strength ◽  
Prototype Development ◽  
Cotton Yarns

The functionality of textiles can be complimented by using a wide variety of modification technologies. This study focuses on textile modification with sol-gel technology as a part of smart sock prototype development. Zinc acetate dehydrate (ZAD) is integrated in sol synthesis and used as modifier thus improving modified cotton yarn mechanical properties and also can prolong time between washing, taking into account modifiers antimicrobial properties. Four hanks of pure cotton yarns with length of 300 m, where modified with silica-based sol with 7,5 wt% ZAD as a modifier. As a part of this study tensile strength and elongation of yarn was determined and changes in liner density were observed. Average yarn linear density increases by 19 % and linear density for knitted samples increases by 2,6 %. Therefore, yarn strength for 80 % of modified samples shows mean value of 2,32 N, that is 17 % higher than unmodified samples.

Effect of polyester and elastane linear density on the physical and mechanical properties of dual-core-spun cotton yarns

2018 ◽  
Vol 17 (4) ◽  
pp. 463-471 ◽  
Author(s):  
Abdul Jabbar ◽  
Usman Tariq ◽  
Tanveer Hussain ◽  
Abdul Basit ◽  
AbdulMoqeet Hai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Linear Density ◽  
Physical And Mechanical Properties ◽  
Cotton Yarns ◽  
Dual Core
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