废PET瓶回收再生技术及应用进展

废聚酯(PET)瓶的回收再生,不但可以减少环境污染,而且还可以节约资源。本文介绍了废PET瓶常用的物理、化学及物理-化学回收技术,以及废PET瓶回收再生的应用领域。     

PET回收料再利用项目

PET瓶的回收是一个具有较好发展前景的产业。目前世界上大约有70%左右的回收PET瓶再生料被制成纤维。日本PET的生产商帝人集团推出的"瓶-瓶"回收工艺是20世纪90年代开始出现的新的PET回收技术,"瓶-瓶"回收技术能实现循环经济的闭环回收再生。目前,国内PET回收瓶主要用于纺丝,也有将少量的废瓶片与新料混合造粒吹瓶,而由废瓶直接吹瓶的技术在国内一直处于空白。由北京崇高纳米科技有限公司开发生产的纳米马-NPET母粒及其应用技术可以填补此项空白。该技术可提高PET回收料的熔体强度,使回收PET树脂在熔融加工中工艺顺畅(不出现流淌…     

亚洲首家再生食品级PET切片企业在北京投产

<正>亚洲首家食品级再生塑料(PET)切片生产企业——北京盈创再生资源有限公司近日在北京投产。该公司从原生PET材料制成PET瓶产品、到回收废瓶制成再生PET瓶级切片、并用于PET瓶产品。中国包     

亚洲首家再生食品级PET切片企业投产

亚洲首家再生食品级PET切片生产企业——北京盈创再生资源有限公司近期在北京投产。该公司从原生PET材料制成PET瓶产品、到回收废瓶制成再生PET瓶级切片、并用于PET瓶产品。中国包装联合会副会长邹祖烨认为。这将为我国实现PET包装循环使用指明方向。     

产业资讯

PET再生料制瓶技术该项PET再生料的加工技术,在实践中具有良好的推广应用价值。目前,国内对PET瓶回收料应用最广的是纺丝,由于进入再生PET纤维行业的技术门槛较低,投资也不高,较多企业纷纷进入这个行业,因竞争激烈,开工率已由2000年的90%下降到2005年55%,部分企业已停产。而瓶用PET有一定的附加值,目前国内有用部分的回收瓶片(约10%)与新料混合造粒吹瓶的方法,而使用100%废瓶料直接吹瓶技术的应用在国内一直没有真正的工业化生产,所以一直倍受大家的关注。北京崇高纳米科技有限公司开发生产的新型PET改性母粒可以实现由100%PET回收…     

亚洲首家再生食品级PET切片企业投产

亚洲首家食品级再生塑料（PET）切片生产企业——北京盈创再生资源有限公司近日在北京投产。该公司从原生PET材料制成PET瓶产品、到回收废瓶制成再生PET瓶级切片、并用于PET瓶产品。中国包装联合会副会长邹祖烨认为，这将为我国实现PET包装循环使用指明方向。     

亚洲首家再生食品级PET切片企业投产

亚洲首家食品级再生塑料（PET）切片生产企业——北京盈创再生资源有限公司近日在北京投产。该公司从原生PET材料制成PET瓶产品,到回收废瓶制成再生PET瓶级切片,并用于PET瓶产品。中国包装联合会副会长邹祖烨认为,这将为我国实现PET包装循环使用指明方向。     

近期PET系列产品循环利用新技术

介绍了PET循环利用的发展。详细叙述了近几年PET产品循环利用的新技术,包括可提高回收PET性能的新型增链剂、PET瓶-瓶回收技术,PET回收在塑料合金领域的应用,用微波炉分解PET塑料瓶,PET再生率达95%的新技术,PET废料生产PBT和聚苯乙烯新工艺,可反复使用的PET啤酒瓶等。并对PET循环利用的发展前景进行了展望。     

科技之窗

日公司开发废PET瓶回收方法 日本月岛机械公司(位于东京)最近开发成功废PET(聚对苯二甲酸乙二酯)瓶的一种新回收方法,称TSK法,即碳酸钠分解法。此法可把瓶子再生,使它在常压下转化成对苯二甲酸(99％纯度),即PET树脂原料,其质量与原来的对苯二甲酸相当。经日本卫生劳动福利省和美国食品及药物管理局(FDA)的多次试验,结果证实这种回收方法不存在安全性问题。     

回收废PET瓶制造高质量的地毯纤维

<正> 近年来,随着PET瓶在饮料等工业大量的普及,回收废PET瓶生产纤维,也越来越重要。美国的Fleissner公司利用生产PP地毯和细旦纤维的短程纺装置技术,通过适当地改变工艺参数,就可以把回收的PET瓶纺制成高质量的地毯纤维。这套装置的生产能力达到了32个纺丝位,一年来,回收废PET瓶,以60t/a的产量生产纤度是6.7—17dtex的地毯纤     

废饮料瓶的处理利用技术新进展

简述了聚酯饮料瓶的松包分类、切片清洗的操作流程及设备,介绍了近年来聚酯饮料瓶再利用技术的研究情况,包括瓶片的直接利用技术及反应挤出增粘技术。并从共混改性、反应改性和增容改性3个方面综述了新型高分子合金制造再利用技术的研究进展。     

聚酯瓶回收制再生纤维

综述了最近世界上聚酯瓶回收技术及产品应用的进展情况，重点讨论了典型的一步法回收工艺路线以及回收技术，特别是在纺制低纤度纤维方面在将来的发展趋势     

废PET饮料瓶回收利用技术

废ＰＥＴ饮料瓶的再生和利用,不权可以减少环境污染,而且可以变废为宝,可创造经济和社会效益,本文主要讨论废ＰＥＴ饮料瓶的回收与利用。     

制造耐热聚酯瓶的新方法

在分析现有国内外热灌装聚酯瓶制造技术的基础上,提出一种制造耐热105℃聚酯瓶的新方法,给出了试验装置及样瓶的检测结果,该方法可用于减轻瓶质量和应用于100℃以上的灌装。该方法已授予发明专利,热灌装聚酯瓶的制造技术,可朝着更高温度灌装和广口热灌装的应用发展。     

瓶用聚酯薄膜气体渗透性能的比较

比较了PET聚合过程中加入1^#纳米添加剂和2^#纳米添加剂的瓶用聚酯薄膜以及热灌装瓶用聚酯薄膜与普通瓶用聚酯薄膜对氧气透气量的大小，试验表明加入2^#纳米添加剂的瓶用聚酯薄膜阻隔气体渗透性能较好，热灌装瓶用聚酯薄膜次之，加入1^#纳米添加剂瓶用聚酯薄膜阻隔气体渗透性能不佳。     

Recycled polyester nanofiber as a reservoir for essential oil release

The importance of creating sustainable alternatives for products that can be easily recyclable, such as, poly (ethylene terephthalate) (PET), is not new, being textile fibers the product of greatest interest. The objective of this work is to propose a recycling alternative for PET bottles for fiber production as a reservoir of essential oils for aromatherapy applications. The fibers were obtained via coaxial and dual-jet electrospinning techniques. The material used in the impregnation and release of peppermint oil was PET originating from disposable bottles. The release of oil from the electrospun fibers was quantified by UV–vis spectroscopy. For the fibers produced by dual-jet electrospinning the cumulative release of peppermint reached around 70% after 30 days. The sample obtained by coaxial electrospinning had a core-shell structure and the amount of oil released was 33% after 30 days. In this investigation, a less aggressive process was introduced, making the electrospinning of PET a viable technique for essential oil impregnation. Dual-jet as well as coaxial electrospinning showed slower release than values reported in the literature. Thus, a procedure with more favorable working conditions was developed, making the process more feasible and serving as an alternative for recycling PET bottles to produce functional textiles.     

Chemical,thermal, and mechanical properties and ultraviolet transmittance of novel nano-hydroxyapatite/polyethylene terephthalate milk bottles

Polyethylene terephthalate (PET)/nano-hydroxyapatite (nHAp) composite granules were obtained using twin-screw extruder. Preforms were prepared by injection molding and then PET/nHAp bottles were produced by blow molding. For PET bottles with nHAp, the migration amounts of carboxylic acid (COOH), acetaldehyde (AA), diethylene glycol (DEG), and isophthalic acid (IPA); glass transition temperature (T_g); melting temperature (T_m); and the maximum crystallization temperature (T_cry) were measured. The load-carrying capacity, burst strength, stress cracking, and regional material distribution tests were carried out on the bottles. X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, and ultraviolet transmittance analyses were conducted to explain the changes in mechanical, chemical, physical properties, and light transmission of bottles. It was found out that the COOH amount increased and the AA content decreased with increasing nHAp amount. On the other hand, no change was observed in the amounts of DEG and IPA. Although the mechanical properties such as load-carrying capacity and burst strength of the bottles have improved, it has been determined that the standard environmental stress crack resistance test procedure cannot be applied to such a composite. Experimental findings indicate that nHAp disrupts the chemical structure of PET and it isolates harmful chemicals such as AA by forming intermolecular bonds. Moreover, with the addition of up to 0.8% nHAp, PET bottles block the light transmission approximately 80% within 400–700 nm wave length zone. The study demonstrates that the PET/nHAp composite bottles can be used in the food industry, particularly in the packaging of milk and milk products which are vulnerable to light exposure.     

如何回收利用废聚酯瓶

介绍一种先进的废聚酯瓶回收利用的工艺过程。废聚酯瓶可用来制造聚酯长丝,生产DMT和EG,或直接转化为聚酯瓶-“瓶到瓶”的工艺过程。     

PET瓶的常见质量缺陷分析

介绍了PET树脂的特点，叙述了性能各异的PET瓶的生产工艺流程。详细分析了冷灌装瓶和热灌装瓶的常见质量缺陷及处理措施。     

PET瓶双向拉伸吹塑成型技术

简述了注拉吹和压拉吹成型PET瓶的生产工艺技术和PET瓶今后的发展趋势