The invention discloses a double ring cap and its manufacturing process of high temperature resistance, which is characterized in that the cap is provided with a double ring gasket, double ring gasket formula of mass percentage of PVC resin 45% - 55%, 37% - 41% DOP plasticizer epoxidized soybean oil, 0.001% - 3%, 0.5 - 1% of calcium stearate and zinc stearate 0.01%0.5%. The new formula 0.001%2% stabilizer, synthesis, product has the characteristics of high temperature resistance, high strength, good sealing performance, the highest sterilization temperature can reach 129.7 DEG C, and compared with the current technology, technical index of material: resilience, compression permanent deformation, mechanical properties, tensile strength, elongation at break, melt index are obviously, in the test, 800 round-trip transportation Highway, cap pad did not appear obvious deformation and fracture, not leaking, no deterioration, the manufacturing cost of the product is lower than that of the existing technology, effectively reducing energy consumption, shorten the delivery cycle, and completely independent production of pellets, do not rely on imports to fill the domestic blank.
【技术实现步骤摘要】
本专利技术涉及食品饮料封装的
,具体的说是一种耐高温 双圈瓶盖及其制造工艺。
技术介绍
目前在皇冠盖行业中,常用的瓶盖的垫片形状主要是两种, 一为 发泡盖,二为双圈盖,通常应用的啤酒盖杀菌要求是68"C30分钟,原有两种垫片材料都能满足要求,但双圈瓶盖的密封性会更好,漏气率低50%;但豆奶盖及部分茶饮料盖的高温杀菌要求是不低于121°C 30分钟或高于105'C15分钟,在12rC杀菌时原有的双圈盖因垫片材 料耐热温度低,热变系数大而变形严重或断裂,造成漏奶和变质,不 能使用;发泡盖采用了进口材料,或过多堆厚垫片,来基本满足杀菌 要求,但发泡盖始终存在三个问题1) 进口材料价格贵,进货周期长,材料成本高;2) 生产工艺不同,加工所耗电增加电费支出25元/万只瓶盖;3) 发泡材料的回弹性差,密封性低于双圈瓶盖,变质率高,尤其 是夏天在1%左右;在这样的背景下,我们一直寻求进口的粒料替代发泡浆料,但始 终不能满足质量要求,往往是瓶盖中的垫片经高温杀菌后变形严重漏奶或断裂而不漏奶,不但客户无法接受,而且还容易产生卫生问题。 综上所述,仍然需要对现有技术进行进一 ...
【技术保护点】
一种耐高温双圈瓶盖,它主要包括盖体和设置在盖体内的双圈垫片,其特征在于:瓶盖内设有双圈垫片,双圈垫片配方质量百分比为PVC树脂45%-55%、DOP增塑剂37%-41%、环氧大豆油0.001%-3%、硬脂酸钙0.5-1%、硬脂酸锌0.01%-0.5%,稳定剂0.001%-2%。
【技术特征摘要】
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