CN105885164A - 一种茶叶包装袋内膜及其加工方法 - Google Patents

一种茶叶包装袋内膜及其加工方法 Download PDF

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CN105885164A
CN105885164A CN201610290566.1A CN201610290566A CN105885164A CN 105885164 A CN105885164 A CN 105885164A CN 201610290566 A CN201610290566 A CN 201610290566A CN 105885164 A CN105885164 A CN 105885164A
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武道贵
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ANHUI CHAOHU SOUTH MEMBRANE INDUSTRY Co Ltd
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Abstract

本发明公开了一种茶叶包装袋内膜及其加工方法，涉及塑料薄膜技术领域，由如下重量份数的原料制成：低密度聚乙烯30‑40份、超低密度聚乙烯10‑15份、氢化松香8‑12份、聚四氟乙烯6‑10份、凹凸棒土5‑8份、鲸蜡醇5‑8份、聚乙烯蜡4‑6份、杀菌防潮剂4‑6份、聚丙烯酸钠3‑5份、气相二氧化硅3‑5份、纳米陶瓷粉2‑4份、单硬脂酸甘油酯2‑4份、乳化硅油2‑4份、纳米胶粉1‑2份、石蜡油1‑2份。本发明茶叶包装袋内膜具有极佳的阻隔性，能有效防止空气中的氧气和水分与茶叶接触后引起茶叶被氧化或霉变，并且具有优异的耐负压性，避免在真空包装时因不耐负压而破损，从而降低包装成本和完全保存茶叶的原本口感。

Description

一种茶叶包装袋内膜及其加工方法
技术领域：
本发明涉及塑料薄膜技术领域，具体涉及一种茶叶包装袋内膜及其加工方法。
背景技术：
中国是世界上最早发现茶并加以栽培利用的国家，随着中国茶文化的发展，人们对茶品质的要求不断提升，促使茶叶的制作、包装和储存等工艺不断发展与提升。茶叶具有易吸潮、易氧化、易破碎、易变质等特性，故而茶叶包装尤为重要。现有的茶叶包装基本采取内外两层包装，内层一般采用真空塑料袋包装，保证茶叶避光、避氧、避潮；外层为硬质材料保证，防止茶叶被挤压破碎，保证茶叶形态完整。其中内层真空塑料包装袋要求具有优异的密封性和耐负压性，而目前所使用的包装袋为了满足上述性能，包装袋的厚度相比一般包装袋要厚很多，这样就增加了包装袋的生产成本，并且加重了对环境的污染。
发明内容：
本发明所要解决的技术问题在于提供一种生成成本低且具有优异密封性和耐负压性的茶叶包装袋内膜及其加工方法。
本发明所要解决的技术问题采用以下的技术方案来实现：
一种茶叶包装袋内膜，由如下重量份数的原料制成：
低密度聚乙烯30-40份、超低密度聚乙烯10-15份、氢化松香8-12份、聚四氟乙烯6-10份、凹凸棒土5-8份、鲸蜡醇5-8份、聚乙烯蜡4-6份、杀菌防潮剂4-6份、聚丙烯酸钠3-5份、气相二氧化硅3-5份、纳米陶瓷粉2-4份、单硬脂酸甘油酯2-4份、乳化硅油2-4份、纳米胶粉1-2份、石蜡油1-2份。
所述杀菌防潮剂由如下重量份数的原料制成：柃木叶15-20份、侧柏叶10-15份、蓖麻叶10-15份、活性白土8-11份、松节油6-10份、微晶纤维素5-8份、石棉绒4-6份、卡波树脂4-6份、炉甘石粉3-4份、聚乙烯吡咯烷酮3-4份、芒硝2-3份、竹醋2-3份、决明子1-2份、钛白粉1-2份、水50-70份，其制备方法为：先将柃木叶、侧柏叶、蓖麻叶和决明子加入水中，浸泡30min后加热至回流状态处理30min，再转入磨浆机中，经充分磨浆后过滤，向滤液中加入活性白土、石棉绒、炉甘石粉和芒硝，充分混合后送入冷冻干燥机，所得固体再经粉碎机制成粉末，最后加入松节油、微晶纤维素、卡波树脂、聚乙烯吡咯烷酮、竹醋和钛白粉，充分混合均匀。
一种茶叶包装袋内膜的加工方法，包括如下步骤：
(1)将氢化松香、聚四氟乙烯和聚乙烯蜡充分混合，先加热至70-80℃保温混合15min，再加入纳米陶瓷粉和纳米胶粉，继续加热至100-110℃保温混合10min，即得物料I；
(2)将凹凸棒土、乳化硅油和石蜡油充分混合，静置30min后于超声频率40kHz、功率50W下超声处理15min，然后加入鲸蜡醇和聚丙烯酸钠，混合均匀后于0-5℃下静置30min，即得物料II；
(3)将物料I、物料II、低密度聚乙烯、超低密度聚乙烯、杀菌防潮剂、气相二氧化硅和单硬脂酸甘油酯加入高速混合机中充分混合，制得混合料后加入混炼机中，于130-140℃下混炼10min，再利用挤出吹塑机挤出吹膜，机头温度控制在210-220℃。
本发明的有益效果是：本发明以低密度聚乙烯为主要原料，辅以超低密度聚乙烯及多种功能助剂制得茶叶包装袋内膜，该内膜具有极佳的阻隔性，能有效防止空气中的氧气和水分与茶叶接触后引起茶叶被氧化或霉变，并且具有优异的耐负压性，避免在真空包装时因不耐负压而破损，从而降低包装成本和完全保存茶叶的原本口感。
具体实施方式：
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施例，进一步阐述本发明。
实施例1
(1)将8份氢化松香、8份聚四氟乙烯和4份聚乙烯蜡充分混合，先加热至70-80℃保温混合15min，再加入2份纳米陶瓷粉和1份纳米胶粉，继续加热至100-110℃保温混合10min，即得物料I；
(2)将6份凹凸棒土、3份乳化硅油和2份石蜡油充分混合，静置30min后于超声频率40kHz、功率50W下超声处理15min，然后加入5份鲸蜡醇和3份聚丙烯酸钠，混合均匀后于0-5℃下静置30min，即得物料II；
(3)将物料I、物料II、30份低密度聚乙烯、10份超低密度聚乙烯、5份杀菌防潮剂、3份气相二氧化硅和2份单硬脂酸甘油酯加入高速混合机中充分混合，制得混合料后加入混炼机中，于130-140℃下混炼10min，再利用挤出吹塑机挤出吹膜，机头温度控制在210-220℃。
杀菌防潮剂的制备：先将20份柃木叶、10份侧柏叶、10份蓖麻叶和2份决明子加入70份水中，浸泡30min后加热至回流状态处理30min，再转入磨浆机中，经充分磨浆后过滤，向滤液中加入10份活性白土、4份石棉绒、3份炉甘石粉和2份芒硝，充分混合后送入冷冻干燥机，所得固体再经粉碎机制成粉末，最后加入8份松节油、6份微晶纤维素、4份卡波树脂、3份聚乙烯吡咯烷酮、2份竹醋和1份钛白粉，充分混合均匀。
实施例2
(1)将8份氢化松香、6份聚四氟乙烯和4份聚乙烯蜡充分混合，先加热至70-80℃保温混合15min，再加入2份纳米陶瓷粉和1份纳米胶粉，继续加热至100-110℃保温混合10min，即得物料I；
(2)将8份凹凸棒土、3份乳化硅油和1份石蜡油充分混合，静置30min后于超声频率40kHz、功率50W下超声处理15min，然后加入6份鲸蜡醇和3份聚丙烯酸钠，混合均匀后于0-5℃下静置30min，即得物料II；
(3)将物料I、物料II、40份低密度聚乙烯、12份超低密度聚乙烯、4份杀菌防潮剂、3份气相二氧化硅和2份单硬脂酸甘油酯加入高速混合机中充分混合，制得混合料后加入混炼机中，于130-140℃下混炼10min，再利用挤出吹塑机挤出吹膜，机头温度控制在210-220℃。
杀菌防潮剂的制备：先将15份柃木叶、12份侧柏叶、10份蓖麻叶和2份决明子加入50份水中，浸泡30min后加热至回流状态处理30min，再转入磨浆机中，经充分磨浆后过滤，向滤液中加入8份活性白土、6份石棉绒、3份炉甘石粉和2份芒硝，充分混合后送入冷冻干燥机，所得固体再经粉碎机制成粉末，最后加入6份松节油、8份微晶纤维素、4份卡波树脂、3份聚乙烯吡咯烷酮、2份竹醋和1份钛白粉，充分混合均匀。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (3)

1.一种茶叶包装袋内膜，其特征在于，由如下重量份数的原料制成：
低密度聚乙烯30-40份、超低密度聚乙烯10-15份、氢化松香8-12份、聚四氟乙烯6-10份、凹凸棒土5-8份、鲸蜡醇5-8份、聚乙烯蜡4-6份、杀菌防潮剂4-6份、聚丙烯酸钠3-5份、气相二氧化硅3-5份、纳米陶瓷粉2-4份、单硬脂酸甘油酯2-4份、乳化硅油2-4份、纳米胶粉1-2份、石蜡油1-2份。
2.根据权利要求1所述的茶叶包装袋内膜，其特征在于，所述杀菌防潮剂由如下重量份数的原料制成：柃木叶15-20份、侧柏叶10-15份、蓖麻叶10-15份、活性白土8-11份、松节油6-10份、微晶纤维素5-8份、石棉绒4-6份、卡波树脂4-6份、炉甘石粉3-4份、聚乙烯吡咯烷酮3-4份、芒硝2-3份、竹醋2-3份、决明子1-2份、钛白粉1-2份、水50-70份，其制备方法为：先将柃木叶、侧柏叶、蓖麻叶和决明子加入水中，浸泡30min后加热至回流状态处理30min，再转入磨浆机中，经充分磨浆后过滤，向滤液中加入活性白土、石棉绒、炉甘石粉和芒硝，充分混合后送入冷冻干燥机，所得固体再经粉碎机制成粉末，最后加入松节油、微晶纤维素、卡波树脂、聚乙烯吡咯烷酮、竹醋和钛白粉，充分混合均匀。
3.一种茶叶包装袋内膜的加工方法，其特征在于，包括如下步骤：
(1)将氢化松香、聚四氟乙烯和聚乙烯蜡充分混合，先加热至70-80℃保温混合15min，再加入纳米陶瓷粉和纳米胶粉，继续加热至100-110℃保温混合10min，即得物料I；
(2)将凹凸棒土、乳化硅油和石蜡油充分混合，静置30min后于超声频率40kHz、功率50W下超声处理15min，然后加入鲸蜡醇和聚丙烯酸钠，混合均匀后于0-5℃下静置30min，即得物料II；
(3)将物料I、物料II、低密度聚乙烯、超低密度聚乙烯、杀菌防潮剂、气相二氧化硅和单硬脂酸甘油酯加入高速混合机中充分混合，制得混合料后加入混炼机中，于130-140℃下混炼10min，再利用挤出吹塑机挤出吹膜，机头温度控制在210-220℃。
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