Van de Wiele:新型通用割绒/起圈地毯织机

凹凸花纹的割绒与起圈地毯织物因其具有非常独特的结构,深受欢迎,需求正不断增加。到目前为止,这种地毯织物以前仅在威尔顿绒头地毯织机上织造。该地毯织机具有很强的兼容性:可织天鹅绒、割绒和起圈织物。但是这种织机由于生产时会产生起绒杆变热,因此产量不高。 比利时的NV Michel van dewiele公司市场部已经开发出了一项新的技术,可以较高速度织造这些多层结构的织物,甚至是双绒面织物。     

织造装备技术的最新进展——ITMA 2015参展织造装备评述

本文简要概述了ITMA 2015展会上展出的剑杆织机、喷气织机、地毯织机、特种窄幅织机等织造装备的性能特点,指出织造装备正在朝着高效节能、自动化、差异化的方向发展,设备稳定性和可靠性不断提升,品种适应性和应用领域不断拓展。     

各种不同簇绒地毯织机的喂纱系统工作原理比较

通过对各种不同的簇绒地毯织机喂纱系统的分析，比较不同的喂纱系统织机织造出地毯质量的利与弊，对手企业选购地毯织机具有借鉴意义。     

剑杆织机和喷气织机几个选型问题探讨

一、剑杆织机和喷气织机的品种适应性 (1)剑杆织机的品种适应性 剑杆织机可适用0.7～3 300 tex各类纤维,产品的适用范围主要是色织物、装饰织物、粗精毛织物、起圈织物起绒织物、特种工业用织物等,最大幅宽可达4.6 m(特种产业用织机可达12.5 m).     

GA731型剑杆织机引纬机构的改造

我公司某一用户在使用GA731型剑杆织机生产幅宽340 cm的缎纹织物时,织物反面易出现纬向起圈现象,严重影响了织物品质.经仔细观察分析,认为织物反面起圈的原因是安装在活动导轨后排的导剑钩勾住了纬纱.为此,决定对GA731型剑杆织机引纬机构进行改造.     

喷气织机用的新颖隧道筘

Michel Van Wiele公司在99'ITMA展出的地毯织机,可以用三根剑杆同时引纬生产西沙尔麻类地毯.上面的剑杆用于上层地毯加固的引纬,下面的剑杆用于加固底层地毯的引纬,而中间的剑杆植入密集的纬纱以结合上层和底层地毯.织造幅宽4.2m的地毯,其速度可超过100m2/n. SLC83型剑杆织机具有符合工作环境改造学的     

纯棉特稀帆布的布边设计

重帆布剑杆织机,一般适用于生产重型织物。而地毯底布属纯棉特稀帆布。我厂利用剑杆织机,曾为外贸试织了600m~2地毯底布样品。用重帆布剑杆织机生产稀薄织物,取得了较好效果。一、主要技术条件通过小样分析,对地毯底布进行了仿制设计。其组织规格及主要技术条件见表1。     

山东日发:智能化程度高

正山东日发此次展出的设备包含剑杆织机、喷气织机等深受客商青睐。展出的RFTL60高速毛巾织机主打多功能性,出可制造凸凹毛、波浪毛等高档毛圈织物。RFJA33喷气毛巾织机则通过全新立体设计和计算机解析组合,利用虚拟样机技术设计了引纬、开口、打纬和起圈结构。RFJW10喷水织机适用于高速状态下织造高密度的织     

山东日发:智能化程度高

<正>山东日发此次展出的设备包含剑杆织机、喷气织机等深受客商青睐。展出的RFTL60高速毛巾织机主打多功能性,出可制造凸凹毛、波浪毛等高档毛圈织物。RFJA33喷气毛巾织机则通过全新立体设计和计算机解析组合,利用虚拟样机技术设计了引纬、开口、打纬和起圈结构。RFJW10喷水织机适用于高速状态下织造高密度的织     

织造设备的技术进步

在ITMA2011展会上进行织造展示的各类无梭织机共61台,其中:挠性剑杆织机19台、剑杆毛巾织机2台、剑杆商标织机5台、剑杆地毯织机1台、刚性剑杆织机6台;喷气织机19台、喷气毛巾织机3台、喷气商标织机3台;喷水织机1台;片梭织机2台。中国有两家企业参展,湖州现代展     

Sound absorption properties of acrylic carpets

Development of functional carpet structures is vital to improve sound quality of human life in transportation vehicles, residential and occupational environments. In this research, pile length and loop density parameters of acrylic carpets were studied to examine the effect on sound absorption properties. Carpet samples, with two different pile densities and four different pile lengths were produced for experimental purposes. Carpets with longer piles and dense loops result in the best sound absorption rates. Acrylic carpets produced with medium length piles and low density loops, yield better results at higher frequencies. Carpet samples with shorter piles and dense loops provide better sound absorption properties at low-to-mid frequencies. It has been observed that loop density and pile length parameters affect sound absorption properties at all frequency ranges. Anova analysis revealed that the combined effect of loop density and pile length parameters is evident in the mid and high frequency ranges.     

平割平圈地毯织机的工艺时序分析与设计

针对我国地毯织造技术基础研究相对薄弱的现状,为给平割平圈地毯织机设计提供更多的理论指导,首先参考时间圆图设计方法和一般割绒地毯织机的工艺要求,提出平割平圈地毯织机簇绒针和成圈钩组件的运动时序关系。然后通过对连续圈绒、割绒和圈割绒交替簇绒时的成圈工艺分析,指出成圈绒时簧片的动作稍超前于成圈钩的远止点时刻,成割绒时簧片动作最晚时刻在成圈钩的远止点时刻,得出平割平圈地毯织机的运动时序关系图。由于平割平圈地毯织机的簧片运动由电气控制实现,独立于由主轴驱动的针、钩、刀的运动体系,因此,运动时序的分析和设计可为成圈机构的机械设计、电气控制系统的设计提供理论参考。     

Modelling of acrylic cut-pile carpet compression properties by means of expert systems based on carpet structural parameters

Abstract

Compression properties of carpet are a detrimental factor influencing carpet wear performance. In fact, carpet compression behavior determines carpet serviceability which in turn affects carpet appearance. Therefore, it is important to predict the carpet compression behavior in order to reduce the product cost. In this paper, a fuzzy logic model for prediction of compressional properties of acrylic cut-pile carpets is implemented in terms of the carpet structural parameters including carpet pile density, linear density of pile yarns and carpet pile height. In order to provide experimental data, six different acrylic cut-pile carpet samples fabricated by using six different acrylic spun pile yarns with yarn count of 18/3, 21/3, 27/3, 30/3, 33/3 and 36/3?Nm. Half of each provided carpet subjected to re-shearing process. All 12 carpet samples in two different cases (normal and reduced pile height) have been tested by standard carpet static and dynamic loading tests to measure thickness-loss as one of compression properties. Fuzzy logic model has been implemented and improved using genetic algorithm. Results show that correlation coefficients of model predictions with experimental values are 0.97, 0.98, 0.98 and 0.98 for carpet thickness-loss after low dynamic, high dynamic and static loading with short and long relaxation times, respectively. Also, linear regression trend between predicted and experimental values represented with a slope near to 1 and almost small bias (intercept). The result indicates that the developed fuzzy logic model is a reliable model predicting the acrylic cut-pile compression behavior.     

Useful life prediction of woolen hand-knotted carpets using multivariate multiple regression

In this study, the main purpose is to predict the useful life of woolen hand-knotted carpets using multivariate multiple regression. Thickness loss of surface pile yarns and compression toughness index were chosen as representative of the compression properties. Also, color difference index (ΔE) of pile yarns, tuft size index, and evenness of texture index were considered as representative of the appearance characteristics. Eighteen woolen hand-knotted carpet samples (symmetric knot) with different structural specifications were produced. The carpet samples were subjected to 4000, 8000, and 12000 drum revolutions (wear factor) using a Hexapod tumbler tester and functional properties of samples were investigated in original and worn out carpet samples. At first, the effective variables were selected using multivariate test, and then multivariate analysis of variance was used for evaluating the significance of obtained models. Optimal separate equations of the functional properties on hand-knotted carpets were determined through multivariate multiple regression method. Reverse model of wear factor can be considered as a proper equation to predict the useful life of carpets.     

用于簇绒地毯织机的新型钩刀割绒机构

为解决多色提花钩刀割绒系统在移针时整个系统的横移问题,根据簇绒地毯割绒的形成原理,设计了一种新型的用于簇绒地毯织机上的钩刀割绒机构,能准确完成勾纱－ 脱纱工艺。根据这套钩刀割绒机构的机构简图,分成３个封闭多边形,对每个封闭多边形依据其矢量关系,建立矢量方程式,并利用欧拉公式简化方程,进行实部与虚部分离得到构件的位移;接着对相关方程式讨论其一阶导数、二阶导数分别得到构件的速度、加速度的数学求解式。通过这些求解式运用MatLab进行编程,计算所求量,得到各构件的运动规律,以及成圈钩的角位移、角速度和角加速度的变化曲线。     

Replicating the cross-sectional distribution of house-dust mite allergen found in carpet

With a view to producing carpets that could be used to determine the ease of particulate aerosolisation during domestic activity, we measured the cross-sectional distribution of dust-mite allergen, Der p 1, produced using American Society for Testing and Materials method (ASTM F608–89) for embedding house dust in carpets with that produced by several alternative protocols. Allergen concentrations produced at different levels within the pile using the different techniques were also compared with those in carpets from actual houses – in which the majority of allergen is typically found towards the base of the pile. To obtain profiles of allergen, horizontal sections, 2-mm thick, were taken from new carpets after they had been seeded with dust and embedded using one of four following techniques: (1) dragging a fixed roller across the surface of the carpet four times, (2) using the same roller but following it up with 200 revolutions in a hexapod wear simulator, (3) dragging the fixed roller across the carpet surface 30 times (the ASTM method), and (4) 2 minutes under a commercial plate compactor. Fibre from each 2-mm-thick section was collected and the Der p 1 content determined using enzyme linked immunosorbent assay and results expressed as ng Der p 1 per area in each section. Embedding with a fixed roller alone was not found to be particularly effective, resulting in roughly equal amounts of dust being apportioned within each pile layer, irrespective of the number of embedding passes used. In contrast, a distribution biased towards the base of the pile was found after roller-embedding/hexapod wear, although still to a lesser extent than has been observed in used carpets. Plate compaction gave a similar allergen distribution profile to combined roller/hexapod treatment but was considerably easier to perform. Thus, both techniques offer promise for researchers seeking to replicate the cross-sectional distribution of dust mite allergen found in carpets after actual use (and conceivably other particulate pollutants also).     

无乳胶的簇绒地毯--地毯底布粘合新工艺

簇绒地毯及其生产工艺是众所周知的，即将起毛的一层(一般为簇入纱圈而形成的)与纺粘法非织造布或机织物粘合(主底布)。地毯表面就可形成毛绒或毛圈。采用Fleissner AquaJet的射流成网系统，可在不需化学粘合剂的情况下，粘合地毯底布。     

Study on thickness loss of cut-pile carpet produced with heat process-modified polyester pile yarn. Part I: static loading

Carpet as a home textile is usually subjected to static loading. Therefore, compression behavior or thickness loss after a long-term loading is important from point of view of carpet appearance as well as its lifetime. In this study, four types of cut-pile carpet were woven based on face-to-face weaving system. Pile yarns were air-jet textured polyester filament yarns that were modified by different heat processes. Then, the carpets’ compression behavior was investigated by static loading test. Results show that by increasing the temperature in setting of pile yarns twist at the autoclave process, the carpet static recovery increases. However, the friezing and heat-setting processes of pile yarns have no significant effect on the carpet static recovery.     

Study on compressional energy contribution into total energy of pile deformation in cut-pile carpet

Compression behavior is one of the most important properties of the carpets. In this study, a new theoretical model has been presented in which total energy of pile deformation in cut-pile carpet including bending energy of pile deformation, frictional loose energy due to sliding pile yarns, and compressional energy due to piles jamming at the end of pile deformation process has been calculated. Then, derived equations have been solved by computer software and calculated theoretical values have been compared with experiment. Results show that compressional energy has no remarkable contribution into total energy of pile deformation. Also, difference between theoretical results and experiment is not large, and presented theory can well predict compression behavior of the cut-pile carpet. Meanwhile, new proposed model could not improve previous presented theory.     

采用组合绒地组织的双层地毯新工艺

本文介绍了应用于2685型电子旋转多臂机上的几种新型地组织结构,它们的优点有：可以在几分钟之内迅速变化组织结构;绒头组织的应用范围增大;节约经纱原料,每年最多可减少开支51129．19欧元,可以设计新的地毯底面,如类似于打结地毯或是具有黄麻风格的地毯。