检索结果-南通市图书馆

A METHOD FOR REDUCING YARN hairiness AT RING SPINNING

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of China Textile University(English Edition) 1993年第1期10卷 40-43页

作者：曲丽君周启澄 Dept.of Text.Techn. Shandong Textile Engieering College Dept.of Text.Eng. China Textile University

In order to improve the quality of yarn,a research was carried out at ring spinning.A modifiedtraveller has been used to reduce the yarn hairiness *** to the statistical analysis ofthe data,it was found that the geome... 详细信息

关键词： balloon balloon controllers hairiness ring spun yarns ring spinning frames traveller

Utilizations of Statistics on Optimizing Parameters in Compact Spinning with Pneumatic Groove

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2011年第5期28卷 478-480页

作者：刘世瑞邹专勇程隆棣 Key Laborary of Textile Science & Technology Ministry of EducationDonghua University College of Textiles & Fashion Shaoxing University

The compact spinning with pneumatic groove utilizes transverse air force and mechanical force of the pneumatic groove to condense fiber bundles to eliminate the spinning *** analysis and variance analysis of orthogonal experiment were used to discover both important and general factors that influence the condensing effect of the compact yarn including negative pressure,traveler,roving moisture regain,and spinning *** from this research have confirmed that the spinning tension is the most important factor affecting the condensing effect and the yarn quality;the negative pressure,traveler,and roving moisture regain are general *** optimal combination for producing least yarn hairiness,A3B2C1D1,is acquired,where the value of negative pressure A is -3.0 kPa,roving moisture regain B is 7.64%,traveler C is 20 #(yarn tex 20.8),and spinning tension D is 25 cN.

关键词： orthogonal experiment variance analysis range analysis compact yarn hairiness index

Motion Analysis of Fiber Band in Compact Field of Compact Spinning

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2006年第1期23卷 144-147页

作者：杨兴汪军杨建平 College of Textiles Donghua UniversityShanghai 200051

The technological process of compact spinning and the compact procedure of fiber band in compact field are briefly illustrated. The motions of fiber band in compact field are discussed theoretically from which tilting angle of suction slot in profile tube, additional twists created by fiber band’s rotating around its own axis and ultimate twists in compact yarn are deduced accordingly. The existence of additional twists is also verified through experiments.

关键词： compact spinning hairiness tilting angle of suction slot additional twist twist

Prickle of Light-Weight Worsted Woven Wool Fabrics

在线全文

学校读者我要写书评

暂无评论

Journal of Donghua University(English Edition) 2004年第2期21卷 47-51页

作者：王革辉 Ron Postle 张渭源 Fashion Institute Donghua University Shanghai 200051 The University of New South Wales Sydney NSW 2052 Australia

Using the forearm test, the prickle of 26 commercially available light-weight worsted woven wool fabrics and 7 other fiber fabrics were studied under (24±1)℃ temperature and (65±5)% RH conditions. The surface fiber diameter of part of the wool fabrics was measured using a microscope. It was found that most of the light-weight worsted woven wool fabrics gave a prickle sensation under the above conditions. The prickle sensation was significantly correlated with the mean fiber diameter of the surface hairiness. It was also found that the prickle of the light-weight worsted woven wool fabrics was significantly correlated with the number of surface fibers which were coarser than 26 μm diameter.

关键词： light-weight wool woven fabric comfort prickle hairiness fiber diameter

Leaf morphological variation among paper birch (<i>Betula papyrifera</i>Marsh.) genotypes across Canada

在线全文

学校读者我要写书评

暂无评论

Open Journal of Ecology 2013年第4期3卷 284-295页

作者： Anjala Pyakurel Jian R. Wang Faculty of Natural Resources Management Lakehead University Thunder Bay Thunder Bay Canada

Variations in leaf morphological characteristics have been extensively studied at both interand intraspecific levels although not explicitly on paper birch (Betula papyrifera Marsh). Paper birch populations might have considerable genotypic and leaf morphological variations that have allowed them to inhabit wide environmental gradients. In this study, we analyzed variations in leaf morphological characteristics in 23 paper birch populations collected across Canada and grown in a greenhouse. Furthermore, we examined whether the variations in leaf morphological characteristics observed were related to the climate of the population’s origin. We found significant genotypic differences in all leaf morphological characteristics (p < 0.05) measured among the birch populations. Thus, we expected that the morphological variations in birch might be related to natural diversity in birch populations due to environmental differences at habitat origin. Principal component analysis (PCA) reduced thirteen leaf morphological variables to five principal components (PC) explaining 84.74% of the total variance in the original data. PCs accumulated with specific leaf area, petiole and leaf width were positively related to latitudinal, longitudinal, and elevational gradients at the population’s origin. Unpredictably, these PCs were significantly negatively correlated to precipitation and aridity index at the origin. Thus, we analyzed if correlations within leaf morphological characteristics had supported the birch populations to acclimate and produce unpredictable relations with the environment of origin. Our results showed that the populations originated in limited precipitation (during growing season) had large leaf width and petiole size but low leaf hairs on adaxial surface. Thus, all these leaf morphological features provide a basis for the birch to reduce water loss from leaves and balance water use efficiency in reduced precipitation. Furthermore, the leaf characteristics measured

关键词： Morphological Variation Leaf Size Leaf Shape Petiole Size Leaf hairiness Climatic Variables Paper Birch

Spinning System for Pineapple Leaf Fiber via Cotton Spinning System by Solo and Binary Blending and Identifying Yarn Properties

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Textile Science and Technology 2019年第4期5卷 86-91页

作者： Khusniddin Ismoilov Sachin Chauhan Mingxing Yang Quan Heng Chemistry and Chemical Engineering Wuhan Textile University Wuhan China

By nature, pineapple fiber (PALF) obtained from pineapple leaf is a smooth, shiny and white natural cellulosic fiber. In current investigation of spinning technique for pineapple leaf fiber based on cotton spinning method comparison of produced yarn properties has been reported. For one of the investigations of this study, the fibers were cut into staple length and various properties of fibers were analyzed. Data and results acquired from this illustrated that there is excellent spinnability on the fiber. Two separate researches were conducted with consideration to produce resultant yarn by spinning of PALF. Yarn derived by solo spinning technique of 100% PALF and PALF blending with polyester and cotton fibers through binary blending technique in equal proportion has been spun, then yarn count, tensile properties, yarn evenness, hairiness have been evaluated and analyzed. The results from numerical simulations analysis indicated that yarn obtained from the Pineapple leaf fiber (PALF) had great potential to be used in apparels.

关键词： Cellulose Fiber Cotton Spinning Technique Spinnability Tensile Strength Evenness hairiness Pineapple Leaf Fiber

Analysis of Cotton Yarn Properties Spun on Aerodynamic Compact and Open-End Rotor Spinning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Textile Science and Technology 2021年第1期7卷 22-40页

作者： Md. Rafiqul Islam Suza Ahmed Md. Abubakar Siddik Sadik M. Ashique Department of Textile Engineering National Institute of Textile Engineering and Research (NITER) Nayarhat Savar Dhaka Bangladesh

This article presents a comparative analysis of the properties of cotton yarn spun on aerodynamic compact spinning and open-end rotor spinning systems. Yarn samples with a linear density of 50 Tex, 37 Tex, 30 Tex, 25 Tex, and 20 Tex were spun both on the aerodynamic compact and rotor spinning systems using the same finisher drawn sliver of medium staple cotton which were produced by a specific mixing. The quality parameters such as mass variation, imperfection index, hairiness, and tensile behavior (strength in count strength product, elongation percentage) of the yarn samples were assessed and analyzed. The results revealed that aerodynamic compact spun yarn had a lower unevenness and mass variation, a higher imperfection in case of a finer count, less hairiness, higher tensile strength, and lower elongation% compared to the open-end rotor spun yarn samples. Finally, paired- samples t-test and regression analysis were carried out by using IBM SPSS 25 to check the significance of yarn quality parameters and correlation among them.

关键词： Compact Yarn Rotor Yarn Imperfection hairiness Tensile Strength

Influence of Spacer on Spun Yarn Quality in Cotton Spinning

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Influence of Spacer on Spun Yarn Quality in Cotton Spinning

Effects of Twist on PSA （Polysulfonamide） Yarn Properties

第二届先进纺织材料及加工技术国际会议

作者： Sayyed Sadroddin Qavamnia Amir Hossein Raei Arsham Zibaee Islamic Azad University Birjand BranchBirjandIran

hairiness is an important factor in yarn *** are many methods for reducing hairiness such as traveller,spindle speed and ….At this research,we study the impression of various spacers（white,yellow,and grey）on properties of some *** you know in ring frame,fibers after passing through from draft zoom they reach to product *** must pass *** distance between these aprons is very *** used some clips such as grey,white,yellow for polyester/viscose,cotton/viscose and 100% cotton yarns with difficult yarn count（30 combed and carded,40 combed）.After we tested,it showed any yarn needs to a special clip and any clips are not good for any *** we use suitable clips,it can reduce hairiness.

关键词： Clips Spacer hairiness Short staple yarn Thin and thick Cv% Nep Yarn quality

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Effects of Twist on PSA （Polysulfonamide） Yarn Properties