影响针刺造纸毛毯(湿毯)性能的主要因素探讨

本文介绍了造纸毛毯在纸生产过程的主要作用和生产中对湿毯性能三个方面的要求以及无纬造纸毛毯和有纬造纸毛毯的工艺路线。通过对毛毯性能测试,研究了纤维原料、基布结构、针刺密度、热定型和毛毯性能的影响。     

BOM造纸毛毯的化学整理研究

对BOM造纸毛毯进行化学整理,然后对整理前后BOM造纸毛毯的液流阻力(滤水性能)、透气性、饱和含水率等性能进行了比较,证明了对纤维进行合理的改性处理可以提高和改善BOM造纸毛毯的使用性能。     

徐州工业用呢厂推出新型造纸毛毯

徐州工业用呢厂是一家专业生产造纸毛毯的大型企业,具有雄厚的造纸毛毯设计、开发和生产能力。企业始终坚持走科技创新的路子,产品不断更新换代,以适应市场的需求。近日,由其自主研制开发的新型造纸毛毯———高弹防粘造纸毛毯、宽幅高速专用BOM造纸毛毯通过鉴定;高冲量压榨专用BOM造纸毛毯获高新技术产品奖。高弹防粘造纸毛毯通过专家鉴定徐州工业用呢厂自主研制开发的高弹防粘造纸毛毯顺利通过由江苏省经济贸易委员会牵头组成的专家组的鉴定,并大批量生产推向市场。该产品通过改变自身的组织结构和性能,具有极高的弹性回复和良好的表面…     

化纤造纸毯热定型理论和实践的探讨

造纸毛毯是非织造布针刺工艺的主要产品,造纸毛毯的热定型工艺决定了产品的性能.文章从纤维的热学原理上分析了造纸毛毯的热定型工艺及所使用的热定型设备,建议改热辐射式为热风对流式或金属接触传导式,以提高造纸毛毯的档次.     

国产中、高速卫生纸机专用造纸毛毯试制成功

由徐州金冠工业用呢有限公司开发研制的适用于中、高速卫生纸机使用的专用造纸毛毯日前投放市场,使用效果良好。随着造纸技术的发展,国内卫生纸机的性能也得到了很大的提高,特别是车速在300～600m／min的卫生纸机占据了相当大的比例。为此类机台配套的造纸毛毯此前大都依赖于进口。徐州金冠工业用呢有限公司充分发挥自身技术力量雄厚的优势,经过近6个月的努力,最终成功研制出性能完善的卫生纸专用造纸毛毯。     

新产品·新技术·新设备

高冲量压榨专用BOM造纸毛毯通过省级鉴定近日,由徐州工业用呢厂自主研制开发的一种新型造纸毛毯———高冲量压榨专用BO M造纸毛毯,顺利通过由江苏省科技厅组织的专家组的鉴定。该产品主要用于配有大辊径压榨、靴式压榨的宽幅、高速造纸机上,特别适于车速在500m/m in以上,生产纸板(卡)类的造纸机和车速在1000m/m in以上,生产文化用纸、新闻纸类的造纸机上使用。高冲量压榨专用BO M造纸毛毯由底网层和纤维层组成。底网层采用进口锦纶综丝,经宽幅重型织机织成环形无插接的底网,铺设成1+1、1+2、2+1、2+2形式的复合结构。其上层底网为组织…     

底网针刺造纸毛毯结构和滤水速率

为进一步优化底网针刺造纸毛毯的结构设计，提高造纸毛毯的滤水速率，分析底网针刺造纸毛毯表层植绒纤维线密度以及底网经纱密度变化对造纸毛毯滤水速率的影响；使用逐步回归分析法，得到毛毯的滤水模型，分析造纸毛毯滤水速率与结构参数间的关系。试验结果表明：底网针刺造纸毛毯的滤水通道主要由纤维层间线密度由小到大排列的纤维网、底网经纱间的缝隙以及由空刺整理带来的垂直方向纤维组成；其他结构参数相同条件下，底网针刺造纸毛毯的滤水速率与表层植绒纤维线密度呈正相关，与底网经纱密度呈负相关；表层植绒纤维线密度对底网针刺造纸毛毯滤水速率的影响大于近纸面一侧底网经纱密度的影响。     

拒污耐磨特制造纸毛毯被评为高新技术产品

日前,由徐州工业用呢厂研制生产的“拒污耐磨特制造纸毛毯”被评为江苏省高新技术产品,这是该厂继“高线压底网造纸毛毯”、“无毯痕造纸毛毯”被评为江苏省高新技术产品之后,又一产品获此殊荣。拒污耐磨特制造纸毛毯是在原高线压底网造纸毛毯和无毯痕造纸毛毯等产品的基础上,进行抗沾污、抗起毛和防磨损化学处理的一种新型产品,该产品与原造纸毛毯相比,其性能得到了很大程度的提高。其拒污自洁能力提高50%～80%,拒细小纤维、各种填料的粘附效果更佳;耐磨性能提高30%～60%,同时,防脱毛、抗起毛性能也得到很大提高;缩短了毛毯的初期适应时间;…     

丙纶短纤毛毯的服用性能及其产品开发研究(一)——丙纶纤维的性能及其发展状况

介绍采用色丙纶短纤维为主体原料与其它纤维混纺织制毛毯,以优质产品为目标,通过试验对比的方法,研究探讨了不同比例下的多规格纤维的纺纱工艺、织造工艺及织物的服用性能。全文由三部分组成,第一部分为“丙纶纤维的性能及其发展状况”;第二部分为“丙纶短纤毛毯的纺织工艺研究”;第三部分为“丙纶短纤毛毯服用性能研究”,本期刊登第一部分内容。     

造纸毛毯透通性等性能的测试及其发展趋势

介绍了造纸毛毯透通性等性能测试的目的、原理和方法,分析了造纸毛毯透气性、透水性、含水量之间的关系及其对毛毯运行性能的影响;探讨了造纸毛毯透通性等性能测试方法的发展趋势。     

底网造纸毛毯生产的新材料和新工艺

介绍了生产底网造纸毛毯的原材料新品种以及改进基布结构的新工艺。原材料和基布结构的改变可以提高造纸毛毯的尺寸稳定性、可压缩性、耐腐蚀性、耐磨强度和使用寿命。     

Stress–strain behavior of polyamide 6 staple fibers of punch-needled press felts under simulated wet-pressing conditions

This study evaluates the specific stress (tenacity) and strain (elongation) of polyamide 6 staple fibers, which were virgin, punch-needled on the press felt, and worn on the press felt under simulated wet-pressing conditions. The staple fibers were distinguished by molecular weights. The fiber deformation and defects were microscopically characterized after the felt preparation and aging. We discovered that the tensile breaking force and elongation of the polyamide 6 staple fibers decreased markedly during the felt preparation and aging. The mechanical reduction of staple fibers reflected their tenacity, work, and modulus values. Surprisingly, the linear density of staple fibers remained unchanged – although fibers strongly deformed and lost their mechanical properties after the felt aging. The results indicate that an increase in molecular weight improves the mechanical durability of staple fibers, the preparation of the press felt (punch-needling) decreases the tenacity and elongation of staple fibers, and humidity provokes their degradation.     

The components of staple tenacity and the determinants of length after carding

A theoretical model for the tensile strength of staples of wool was used to propose variables that could be measured on thirty six fleece samples from Romney sheep genetically selected on the basis of wool staple tenacity. Other variables that have been noted elsewhere in the literature were also measured. Nearly 75% of the variation in staple tenacity was described by average and minimum cross-sectional area of the fibres, and the relaxed length of the fibres held between the jaws of the instrument used to break the staple. The addition of staple length and variation in total length of the fibres in the staple improved this to almost 84%. The ultimate goal of the genetic selection was to increase the average length of fibres following carding (Hauteur and Barbe), which were also measured on the fleece samples, and the fibre, staple and sample measurements used in stepwise regression to reveal the determinants of length after carding. Variation in Hauteur was dependent on the total energy required to break the staple and the proportion of new tips present in the post-break region of the staple, yet as little as 52% of the variation was accounted for. Average cross-sectional area accounted for a further 3% of the variation in Hauteur but this was not statistically significant. Barbe was dependent on staple tenacity, which accounted for 48% of the variation. In hindsight, staple tenacity may not be an appropriate measure to genetically select sheep in order to improve fibre length after carding given the variables that affect these traits.     

100tex紬锦混纺针织纱的研制

以绢纺Ｂ３１１精梳机的落绵（７８％）与锦纶短纤维（２２％）两种纤维，在丝纺设备上纺制１００ｔｅｘ（１０Ｎｍ／１）由锦混纺针织纱。文章针对绢纺落绵与锦纶短纤维的各自特点，介绍在混纺成纱各工序中工艺参数的选择和必须注意的问题，指出其生产关键在于两种纤维的均匀和及回潮率的控制。     

Differential solubility of cellulosic man-made fibres

The differential solubility of man-made cellulosic fibres in zinc chloride/formic acid dissolutions has been studied. This technique of characterisation of the fine structure has been applied to substrates of different families of cellulosic man-made fibres such as viscose (staple and filament), modal, polynosic and lyocell fibres. The developed technique has allowed the detection of the fine structure differences in substrates of different families of man-made cellulosic fibres, and even in substrates of the same family and/or form of presentation (staple fibre, filament yarn).     

锦纶无纬针刺造纸毯的研制

研制锦纶无纬针刺造纸毯,技术关键是将纱线环绕成筒状底网,底网铺上短纤维后针刺加固,最后经远红外线热定型而成。介绍该毯的生产工艺和产品特点、市场潜力。     

Feltability of cashmere and other rare animal fibres and the effects of nutrition and blending with wool on cashmere feltability

Felting is a unique attribute of animal fibres used for the production of a range of industrial and apparel textiles. Felting can be an adverse attribute as a consequence of dimensional shrinkage during laundering. As there is little objective information regarding the feltability of rare animal fibres or the factors which may affect felting three investigations were undertaken. A survey (n?=?114) of the feltability of cashmere from different origins of production, cashgora, quivet, camel hair, llama, guanaco, bison wool, cow fibre and yak wool quantified the large variation between and within these fibre types. Cashmere from some origins and cashgora produced higher feltball density than the other fibres. Different nutritional management of cashmere goats (n?=?35) showed that cashmere grown by poorly fed goats had a lower propensity to felt compared with cashmere grown by better fed goats. A consequence of the progressive blending of cashmere (n?=?27) with a low propensity to felt superfine wool (high fibre curvature) increased the propensity of the blend to felt, but when the same cashmere was blended with low curvature superfine wool, there was little or no effect on feltability. The mechanisms which lead to variance in feltability of these fibres were quantified with multiple regression modelling. The mechanisms were similar to those reported for wools, namely variations in the resistance to compression, fibre curvature and mean fibre diameter, with likely effects of fibre crimp form. It is possible to source cashmere and other animal fibres which have different propensities to felt and therefore to produce textiles which are likely to have different textile properties.     

Cut resistance of hybrid para-aramid fabrics for protective gloves

This paper deals with cut resistance of hybrid woven para-aramid fabrics tested according to the appropriate clause of EN 388 – “Protective Gloves against Mechanical Risks”. Abrasion, puncture and tear resistance properties of the fabrics were also measured. The experimental sample set was plain-woven fabrics made of hybrid yarns composed of staple para-aramid fibres with different core/sheath ratios of various filaments in their structure. The effects of core/sheath ratio and core filament type were investigated. The results revealed that decreasing core–sheath ratio of the hybrid yarns led to the increase in weight and thickness, resulting in improved cut, abrasion and puncture resistance properties. It was confirmed that cut resistance increased with the increase in thickness and weight of the fabric. Para-aramid/Dyneema® fabric had higher cut, abrasion and puncture resistance properties.     

造纸压榨毛毯底网结构的设计

底网是造纸压榨毛毯的骨架,其选用原料、组织结构对毛毯的性能有重要影响.经纱采用复丝、纬纱采用单丝、底网组织采用经二重平组织和双层组织,可使造纸压榨毛毯的底网性能满足使用要求.     

现代压榨毛毯的结构和运行状态诊断

底网针刺毛毯是压榨毛毯中的主流产品 ,结构多样 ,应依据每台纸机的每个压榨位置而专门定制。文章介绍了亚普敦公司生产的几种典型毛毯和毛毯运行状态诊断实例