真丝复合丝牛仔的生化洗整理研究

真丝复合丝牛仔织物是牛仔面料中的高档产品。它以棉纱为芯，桑蚕丝包复在芯线外层，形成独特的真丝复合丝新材料。本文以织物的失重率、断裂强力、柔软性、同色性等为考查指标，通过对影响中性纤维素酶及中性蛋白酶整理真丝复合丝牛仔织物的各种因素的研究，优化了一步法生化洗真丝复合丝牛仔面料的整理工艺，探讨了酶与蚕丝及棉纤维的反应机理，并用扫描电镜测定。整理后的真丝复合丝牛仔面料的服用性能也作了试验和检测。     

Evaluation of cotton seed cake as a feed ingredient for fattening sheep

The value of cotton seed cake as a source of crude protein in sheep diets was studied. The cotton seed cake was incorporated into diets at levels of 0, 15 and 30% after replacement of soya bean meal and was fed ad libitum to growing lambs. The diets were formulated to be isonitrogenous and isocaloric. Sixteen lambs (8 male and 8 female) having an average liveweight of approximately 13.6 kg were used in each treatment. After being fed for 62 days and having reached a liveweight of approximately 26.7 kg, five male lambs from each treatment were slaughtered and carcass data were collected. Results of the growth trial showed that there were no significant differences in feedlot performance or carcass analysis among the lambs fed these diets. The dressing percentage was slightly higher (P > 0.05) for lambs fed the 15% cotton seed cake compared with the 30% cotton seed cake and control diets. However, the final weights were substantially higher (P < 0.001) and live average daily gains and feed intakes were all higher (P < 0.10) for male animals. It was concluded that cotton seed cake is an acceptable feed ingredient for growing sheep and can satisfactorily replace soya bean meal as a source of protein in ruminant diets, a feedstuff locally produced in Greece and substantially cheaper than the imported soya bean meal.     

CJ 7.3 tex纱的生产实践

为确保CJ 7.3 tex纱在精梳落棉率为9%时的成纱质量,合理选配原料,清梳工序减少纤维损伤、控制短绒产生,精梳工序采用前进给棉方式,并粗细工序合理牵伸分配,以提高成纱条干均匀度,络筒工序合理设置电清参数,使CJ 7.3 tex特细号纱质量达到使用要求.     

R40型转杯纺纱机纺针织纱的工艺优选

探讨R40型转杯纺纱机纺针织纱的工艺优化.通过对R40型转杯纺纱机纺针织纱时转杯直径、分梳辊速度、补风口位置及机械手参数设定进行试验和优选,并对转杯纱与环锭纱进行质量对比分析.指出:通过纺纱工艺的优化试验,正确配置转杯纺关键工艺参数,才能充分发挥进口设备的技术优势,生产出了满足用户需要的高质量的转杯纺针织纱.     

木棉纤维与棉纤维结构性能的比较

研究木棉纤维的结构与性能.测试了木棉纤维的长度、线密度、外观形貌、红外光谱、X射线衍射图及拉伸性能,并与棉纤维进行对比分析.结果表明:木棉纤维长度在20 mm左右,线密度约0.68 dtex,投影宽度接近细绒棉,无天然转曲,中空度达90%;木棉纤维中存在有木质素;木棉纤维与棉纤维同属于纤维素Ⅰ晶型,结晶度为46.4%;其强力与断裂伸长率明显小于棉纤维.     

精梳棉Formotex纤维混纺竹节纱的开发

为纺制精梳棉Formotex纤维混纺竹节纱,根据Formotex纤维性能特点,合理选择工艺流程,清梳工序多松少打、多梳少落,优选速度、隔距等工艺参数,减少纤维损伤、提高棉网清晰度;并粗工序优选后区牵伸、罗拉隔距和粗纱捻系数,注重改善纱条均匀度;细纱工序合理选用胶辊、钢丝圈和集合器,控制毛羽和减少纱疵,最终使纺纱质量指标满足了使用要求.     

巴西棉18.2 tex针织纱的生产

为提高巴西棉单唛纺C 18.2 tex针织纱的质量,针对巴西棉含杂含糖较高,适纺性较差特点对棉花进行了消糖处理.调整了清梳联打手速度、尘棒角度工艺,梳棉机速度、隔距和并条牵伸工艺合理配置,粗纱采用重定量,细纱优选牵伸工艺,最终使C 18.2 tex针织纱质量达到较好的水平.     

棉纺织企业技术改造要再上新台阶

阐述金融危机环境下我国棉纺织工业技术改造的方向.通过分析近年来我国棉纺织行业进行结构调整、转变发展模式后主要产品产量、服装出口情况以及代表棉纺织行业技术装备水平的"三无一精"所占比重的数据,认为应对当前的困难最根本的是靠行业和企业进一步结构调整,转变发展方式,增强产品竞争力,增强企业抗衡风险的能力.要抓住机遇,从企业实际出发,明确产品定位和改造思路,通过技术改造,努力缩小关键工序、关键设备、关键环节与国际先进水平的差距,着力提高产品质量,提高劳动生产卒,改善劳动条件,增强产品竞争力.促进技术改造再上一个新台阶,以保持整个行业平稳、较快发展.     

着力转变发展方式以保持行业平稳较快发展

探讨我国棉纺织行业转变发展方式,加快结构调整,优化产业升级的具体措施.在分析近年来我国棉纺织行业运行情况的基础上,认为影响棉纺织企业经济效益的主要因素是各项成本的大幅上升、进口棉花滑准税率提高、人民币升值、2007年棉纺织品出口退税率下调、银行存贷款利率的调整等,为此,我国棉纺织行业应优化原料结构、优化技术结构,加快结构调整,由数量型发展方式切实向质量效益型发展方式转变,以保持行业平稳快速发展.     

棉麻混纺细号竹节纱的试制

探讨棉麻细号竹节纱的生产工艺与质量.选择了苎麻和亚麻两种原料分别进行棉麻9.7tex混纺竹节纱的试纺.分析比较了棉亚麻和棉苎麻混纺细号竹节纱各个生产工序的工艺配置和质量情况.结果表明:在前纺工序,两者的质量差异不大,棉苎麻混纺制成率好于棉亚麻混纺.细纱工序棉苎麻混纺竹节纱断头较少、成纱条干较好,但生产中易产生长粗节问题,应对细纱竹节参数及络筒清纱参数进行适当调整.