A model for the twist distribution in the slub‐yarn

Abstract

2016),"Consumers' behavioural intentions after experiencing deception or cognitive dissonance caused by deceptive packaging, package downsizing or slack filling", European Journal of Marketing, Vol. 50 Iss 1/2 pp. 213-235 http://dx.If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -This paper seeks to build a mathematical model to deduct the twists distribution in the slub-yarn. Design/methodology/approach -The model, considering the shearing modulus and polar moment of inertia of the yarn, influenced by the yarn density, is established based on the bar torsion model. The twists distribution in the slub-yarn is concluded based on the analysis of the results. The rules were verified via an indirect method, by testing the breaking strength of the slub-yarn. Findings -The results of the analysis showed that twists in every section of the slub-yarn are in inverse proportion to the square of the line density of the corresponding section. Slub length is a key factor to the twist in the base yarn, and the increase of the slub length will increase the twist; while the multiple is the key factor to the slub twist, and the enhancement of the multiple will decrease the twist significantly.Research limitations/implications -The analysis cannot be verified via a direct method. A new, more conceivable direct method should be utilized to test the result. Originality/value -The paper builds a base for the research of the mechanical properties of slub-yarn and gives directions to the slub-yarn production.

Study of yarn twist angle using numerical simulation

“…Lu, Gao, and Wang (2007) present a theoretical analysis of slub yarns and conclude that twist should be proportional to 1/(tex) 2 while Johnson and Young (1986) affirm that redistribution should follow the twist factor, i.e. twist should be proportional to 1= ffiffiffiffiffiffi tex p , although they observed a larger dependence.…”

Aplikasi Benang Slub Untuk Pembuatan Produk Window Covering

“…Benang slub adalah salah satu benang hias dengan beberapa bagian tebal pada benang (slub) yang dihasilkan melalui perubahan kepadatan linear benang secara sistematis selama proses pemintalan. 11 Dari beberapa penelitian sebelumnya telah diketahui bahwa parameter utama benang slub seperti panjang slub, jarak slub, ketebalan slub, panjang benang dasar, nomor benang, twist, dan lain-lain berpengaruh terhadap kekuatan dan mulur benang. 12,13,14 Dalam literatur lain terdapat beberapa penelitian lain yang menyatakan bahwa beberapa parameter dari benang slub yang digunakan sebagai benang pakan pada kain tenun memiliki efek yang signifikan secara statistik terhadap hasil uji kekuatan arah pakan pada kain tenun.…”

Response Surface Modeling of Physical and Mechanical Properties of Cotton Slub Yarns

“…[8] Lu et al investigated the influence of yarn twist on the mechanical and physical properties of the slub yarn and concluded that the slub length is a key factor to decide the yarn twist. [9] Some mechanical properties of slub yarn have been analyzed using statistical methods. [4] It has been reported that the twist distribution in every section of slub yarn is inversely proportional to the square of linear density of the corresponding section.…”

“…[4] It has been reported that the twist distribution in every section of slub yarn is inversely proportional to the square of linear density of the corresponding section. [9] The parameters of rotor spun slub yarn were investigated and it was found that rotor diameter, yarn count, slub thickness and performance of the servomotor significantly affect the slub length. [10] The important parameters of slub yarn include the slub length, slub distance (pause length/base yarn), mass increase or mass decrease within a slub (slub thickness) or within a pause (pause thickness) and the repetition pattern of the slub yarn as shown in Figure 1.…”