共查询到19条相似文献,搜索用时 93 毫秒
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介绍了热风法非织造布生产的两种工艺方法,即滚筒式热风粘合和传送帘式热风粘合,并着重了对后一种工艺特点的阐述,最后介绍了采用热风粘合设备生产非织造布的一些优点。 相似文献
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<正> 最近,Fehrer公司对其V21/R预成网机进行了技术改造(如图1),扩大了RSP-V21/R-K12HIGH-LOFT生产线的生产能力,进一步提高了纤网质量。首先,在给料斗后设一测重带(图示①),以代替原有的测重杆。测重带的简单压辊(图示②)轻压纤网层,将其从给料斗的输出罗拉送到V21/R的喂入罗拉。这样就增大了测重范围,使纤网层单位面积的重量测试的精确度提高,控制性增强,重量偏差从原来的15%~40%降到现在的5%左 相似文献
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本文概述了国内外热风法非织造布的发展情况,论述了热风法非织造布的结构特点和性能优势,并通过试验数据对比说明了热风布在柔软性、回弹性以及渗透性上比热轧布更适合于作卫生覆面材料。 相似文献
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阐述了对用于卫生材料热风非织造布的质量及性能要求。通过实验对比,重点分析了生产速度、热风温度、热风风压等工艺参数对产品性能的影响。 相似文献
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采用PE/PP双组分纤维,经梳理成网、热风粘合加固后制成蓬松、柔软的非织造布.文章讨论了生产速度、温度和真空度等工艺参数对产品性能的影响. 相似文献
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基于热风非织造材料和超细纤维的特性,本文利用超声波粘合工艺将热风非织造材料与超细纤维非织造材料进行复合,开发出了一种新型复合非织造保暖材料,并对其结构和性能进行测试分析,探讨了超细纤维非织造材料以及复合结构对复合材料性能的影响,为复合保暖材料的研究开发提供了一定的参考。 相似文献
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系统地介绍了沈阳新发公司纺粘法非织造布生产线的技术改造情况 ,探讨了制约设备生产能力和产品质量提高的因素以及工艺之间的互相关系。通过改造可以有效地发挥和提高设备能力 ,生产出更好的产品 ,使企业获得良好的效益。 相似文献
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着重研究热风非织造布部分生产工艺对厚度的影响。结果表明,增加梳理杂乱度、使用空调风冷冷却方式、降低冷却辊热风炉牵伸速差等,均能不同程度地提升热风非织造布的厚度,以及其作为卫生用品表层的干爽舒适感。 相似文献
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以小麦粉为原料,在单因素优化其面团配方的基础上,采用热风干燥法制备方便馄饨。并以复水比、蒸煮损失率、感官评价为指标,采用正交法考察单甘酯、蔗糖酯及复合磷酸盐因素的影响,得到最佳复合添加剂配比。同时,依据Box-Behnken的中心组合试验设计原理,选取蒸制时间、热风干燥时间、复水时间为影响因素,感官评价为响应值,应用响应面法对其制备工艺做进一步优化。结果表明,方便馄饨面团最适配方为:和面加水量42%,食盐1%,谷朊粉9%;最优复合添加剂配比为:单甘酯0.2%,蔗糖酯0.3%及复合磷酸盐0.1%。最佳制备工艺条件为:蒸制时间3min,干燥时间48min,复水时间5min。在该优化条件下可得到口感品质较好的热风干燥方便馄饨产品。 相似文献
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In times of climate change and shortage of non-renewable resources, building insulation becomes an important issue to save energy and resources. One option could be to use wood fiber insulation boards as a substitute for fossil fuel-based insulation materials. This document presents the manufacturing of wood fiber insulation boards by using the dry process and an innovative curing method combining hot-air and hot-steam. The aim was to reveal the positive physical effects of using hot air and steam in combination for curing of pressure-resistant insulation wood fiber boards. In addition to familiar bonding agents such as polymeric methylene diphenyl diisocyanate (pMDI), urea–formaldehyde resin (UF) and an enzymatic binder system should be partially used here for substitution. At this stage, fibers should be enzymatically pre-treated with laccase in conjunction with a suitable mediator, forming a Laccase-Mediator-System (LMS). A further goal of the paper is to investigate in which quantities LMSs can be added to the binder mixture to achieve results comparable to those of conventionally bonded fiber boards. For this purpose fiber insulating boards with a bulk density of 180 kg/m3 and a thickness of 40 mm were produced and tested in regards to physical technical properties such as internal bond strength (IB), compressive strength (CS) and water absorption (WA) over 24 h. The objective of this study was to understand whether an optimal relationship of hot-air and hot-steam exists in relation to physical technical properties. Present work has shown that the steam treatment offered enhancing effects in regards to both internal bond and water uptake after 24 h. However, the best results were achieved by using hot-air/hot-steam in combination for curing. Here the condensation heat was exploited to obtain higher temperatures for a better lignin repolymerization. In conclusion, the results show that a partial substitution of pMDI by LMS is generally possible and curing via hot-air/hot-steam is advisable; however, the maximum evaporation time should be restricted to 10 s. 相似文献
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