共查询到20条相似文献,搜索用时 93 毫秒
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
对气相法聚丙烯生产的双向拉伸聚丙烯(BOPP)烟用包装膜专用树脂F 1002进行了结构性能研究。研究结果表明,烟用包装膜专用树脂具有特征性分子量及其分布,即既含有较高的分子量组分,又含有适量低分子量组分,从而保证其在双向拉伸成型工艺中具有较高的熔体强度及熔体流动稳定性,使得制品厚度均匀性优异。同时,适宜的等规指数(96.5%~97.5%)及其等规序列分布特性,使采用均聚型烟用包装膜专用树脂加工成型的BOPP薄膜具有挺度高,满足烟用包装膜的特性要求。 相似文献
12.
简要介绍了我国BOPP薄膜工业技术的起步和发展,描述了BOPP薄膜工业技术的生产设备和BOPP薄膜生产线的特点。介绍了BOPP薄膜用聚丙烯原料的性能、特点和功能性添加剂的种类性能、用途和发展趋势,以及BOPP薄膜产品的种类和应用。 相似文献
13.
BOPP专用料的生产开发 总被引:2,自引:1,他引:2
介绍了聚丙烯双向拉薄膜(BOPP)专用料T46F-M的生产工艺和BOPP的发展现状,分析了BOPP专用料性能上存在的问题,并提出了相应的解决办法。 相似文献
14.
国内BOPP膜生产现状及市场预测 总被引:1,自引:0,他引:1
介绍了国内双向拉伸聚丙烯(BOPP)薄膜的行业发展状况,包括BOPP薄膜的国内主要生产厂家及生产设备、未来几年的市场需求预测以及拟建BOPP薄膜装置和新产品。 相似文献
16.
Influence of high power ultrasound on physical–chemical properties of polypropylene films aimed for food packaging: barrier and contact angle features
下载免费PDF全文
![点击此处可从《Polymer International》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Mario Ščetar Mia Kurek Anet Režek Jambrak Frédéric Debeaufort Kata Galić 《Polymer International》2017,66(11):1572-1578
Investigation was focused on the impact of high power ultrasound (HPUS), also called thermosonication, on the oxygen permeation properties (permeability, solubility and diffusion coefficients) of barrier films aimed for food packaging. For this purpose, biaxially oriented polypropylene (BOPP) coated with acrylic/polyvinylidene chloride (BOPPAcPVDC) and biaxially oriented coextruded polypropylene (BOPPcoex) were used. The physical–chemical profile of the samples was determined using goniometry. There is a significant impact only of extreme HPUS conditions (the longest time and the highest amplitude) on the permeability, solubility and diffusion coefficients of oxygen through the BOPP films. The highest influence on the oxygen permeability in both investigated BOPP samples involved an HPUS with an amplitude of 100% during a 6 min treatment. However, BOPP samples showed different sensitivities at lower HPUS treatments. © 2017 Society of Chemical Industry 相似文献
17.
国内外BOPP薄膜现状及发展趋势 总被引:8,自引:0,他引:8
介绍了国内外BOPP薄膜的现状及发展趋势,分析了国内BOPP薄膜分布及供求状况,提出了国内BOPP薄膜行业面对的问题及其它相关内容。 相似文献
18.
Biaxially oriented polypropylene (BOPP) film accounts for a large amount of polypropylene since it is well suited for food packaging films or industrial films, because of its high performance in terms of mechanical and optical properties. Recently machine speed has been increasing to obtain higher production rate and film thickness has become thinner to reduce the environmental load. To meet the demands, many researchers have been investigating stretchability of PP by connecting the stretching force at the yield point and crystalline structure. Many other studies have been conducted regarding the surface structure of BOPP. Although there were some cases that crater‐like film surface roughness was formed on BOPP films, the formation mechanism of craters has not been clarified. In this report, new hypothesis of the crater‐like film surface roughness formation mechanism is proposed by observing the transformation of crater from sheet to BOPP film and by investigating the relationship between the stress–strain curve and surface roughness change. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
19.
阐述了高速、超薄、高挺度双向拉伸聚丙烯BOPP专用料PPH-F03Q的开发和生产过程。依据青岛炼化现有装置,确定了具体的生产参数和控制指标,成功的开发出各性能指标均完全符合要求的新型BOPP专用料,并与原BOPP专用料进行了对比,实测指标远好于控制指标。加工应用表明,该新型BOPP专用料的性能达到了开发要求。 相似文献
20.