共查询到15条相似文献,搜索用时 250 毫秒
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通过PET的分子结构、物理/化学特性来说明影响PET瓶品质的物理、化学因素;通过PET瓶的生产工艺流程及热灌装PET的吹瓶方法/过程、及影响因素来说明PET瓶品质问题的产生原因及其解决方法;通过PET瓶在热灌装线的使用过程来说明影响PET热灌装饮料包装品质的因素及其解决方法;从而为PET瓶在热灌装线的使用提供了较有借鉴意义的一手资料。 相似文献
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PET瓶在碳酸饮料中的应用 总被引:5,自引:0,他引:5
从PET分子结构说明影响PET瓶质量的物理和化学特性;根据生产实践及经验,从PET瓶生产工艺、生产过程说明影响PET瓶质量的因素及其控制方法;从PET瓶使用过程说明影响产品包装质量的因素及控制方法.为保证产品包装质量提供具有参考价值的经验和技术. 相似文献
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简介了PET热灌装菊花饮料的工艺流程,详细说明了PET热灌装菊花茶饮料品质的过程控制措施和管理要求;并通过饮料发酵或饮料变浑浊(透过率97%)的原因分析来说明其控制要点;从而为PET热灌装菊花茶饮料的品质控制提供了较有借鉴意义的一手资料。 相似文献
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PET瓶热灌装工艺具有安全性高,操控性能好,投资少等优点,在饮料生产领域应用广泛,但饮料从热态到常温过程中体积收缩产生负压,给瓶体设计造成一定局限性,必须利用呼吸板块吸收负压,同时瓶体需采用厚加强筋以提高强度.充氮热灌装工艺是在传统热灌装工艺的灌装工序后,旋盖前向瓶体内部注射液氮,通过氮气在热态和常温下的压力变化来消除... 相似文献
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介绍了洁净和超洁净无菌灌装生产的工艺及设备。洁净和超洁净无菌灌装PET瓶的技术与热灌装PET瓶的技术相比,其优势非常明显,能够最大程度地保持产品的营养成分和风味,特别适合对热敏感的饮料产品。以果汁饮料为例,说明选择合理的工艺,应用HACCP管理方法,无菌灌装技术会逐步替代热灌装技术,具有良好的经济效益和发展前景。 相似文献
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简迷了PET热灌装果汁饮料的生产工艺.并将HACCP体系应用于PET热灌装果汁饮料的生产过程中.对生产过程各环节可能造成的潜在危害进行了分析评估.制定了HACCP危害分析表和HACCP计划表。 相似文献
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BOPP瓶与PET瓶在热灌装果汁及饮料应用上之比较 总被引:1,自引:0,他引:1
以白柚果汁为例,分别热灌装于BOPP(biaxial oriented polypropyle与PET(polyethylene terehthalate)瓶内,藉分析贮藏35d于4℃、25℃及37℃之温度下样品之物理化学性质,探讨两种包材对于热罐装饮料品质影响。 相似文献
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Ohkado Y Kawamura Y Mutsuga M Tamura HO Tanamoto K 《Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan》2005,46(1):13-20
The residual volatiles in recycled polyethylene terephthalate (PET) were analyzed using headspace/GC/MS. Recycled PET samples were made from PET bottles used for beverages, alcohol and soy sauce, and they were recycled in physical recycling plants, chemical recycling plants and superclean-like recycling trials. The physically recycled PET flakes contained small amounts of volatiles such as ethanol, limonene, 2-methyl-1,3-dioxolane, acetone, octanal and nonanal. Most of them originated from foods packed in bottles, and only 2-methyl-1,3-dioxolane was derived from polymer impurities. In contrast, the superclean-like or chemically recycled PET contained no detectable volatiles, like new PET pellets. The PET sheets shaped from physically recycled PET had no detectable volatiles. Not only the chemically and superclean-like recycled PET, but also the physically recycled PET contained no hazardous volatiles. It was concluded that there is no safety concern about volatiles in recycled PET, for the present use. 相似文献
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热灌装非结晶瓶口的节能效果研究 总被引:1,自引:1,他引:0
本文通过对瓶口的结晶及非结晶工艺之间的比较,阐述了非结晶PET瓶口在节能方面的优点并分析了瓶口非结晶工艺的原理和方法,旨在对生产热灌装瓶的企业给出一定的参考,可对"节能减排,低碳经济"政策的实施有较大的促进作用。 相似文献
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Aristoula?G.?Karamani Vassilios?I.?Triantafyllou Konstantoula?Akrida-Demertzi Panagiotis?G.?Demertzis
The increased use of refillable poly(ethylene terephthalate) (PET) bottles as packaging for soft drinks has prompted us to investigate the effect of sorption of artificially introduced chemical contaminants into refillable PET bottles in order to establish a practical and easy-to-apply test procedure to evaluate their chemical inertness. For this evaluation, quick laboratory procedures, which focus on the interaction of PET bottle wall strips in place of actual bottles with a selection of model contaminants representing the myriad of chemicals, are proposed. The first objective of this study was to validate a modified quick chemical inertness test method for refillable bottles by comparing the results of sorption into PET strips with those of tests using actual PET bottles. A further objective was to investigate the stability of refillable PET bottles which were stored under unfavorable conditions, in relation to the chemical inertness behavior of the material. The results indicate the suitability of the modified quick test as it satisfactorily simulates contamination of refillable PET bottles. Moreover, storage of these bottles under unfavorable conditions does not have an adverse effect on the chemical inertness behavior of the plastic material. 相似文献