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CN110370587A - 一种防盗瓶盖的制备方法 - Google Patents

一种防盗瓶盖的制备方法 Download PDF

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CN110370587A
CN110370587A CN201910571948.5A CN201910571948A CN110370587A CN 110370587 A CN110370587 A CN 110370587A CN 201910571948 A CN201910571948 A CN 201910571948A CN 110370587 A CN110370587 A CN 110370587A
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bottle cap
theft
theft bottle
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杨玉全
余长云
何杰
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Foshan Huaxin Hengfeng Polyester Packing Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
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Abstract

本发明公开了一种防盗瓶盖的制备方法,包括以下步骤:制作瓶盖形状的模具;将改性热塑性树脂加入注塑机料筒,在料筒内加热到熔融塑化后保温;合模,将熔融后的改性热塑性树脂注塑到模具中;保压,冷却加入成核剂,开模,脱模制成防盗瓶盖毛坯;将防盗瓶盖毛坯后期处理后,得到防盗瓶盖;所述改性热塑性树脂选自改性高密度聚乙烯。本发明制作工艺简单,密封性能及防盗性能良好,其防盗结构采用的是一种可视窗的结构,通过连接点,将盖体和防盗环连接成一体,可以通过一次成型,不需要进行二次加工,降低能耗,本发明的防盗瓶盖不会产生漏液的情况,解决了微生物超标和发霉的问题。

Description

一种防盗瓶盖的制备方法
技术领域
本发明涉及塑料瓶盖技术领域,尤其涉及一种防盗瓶盖的制备方法。
背景技术
目前,为了防止瓶盖被恶意开启,往往在瓶盖上设有防盗环,现有的瓶盖一般是在瓶盖底部设置防盗环,防盗环与瓶盖本体之间通过若干个易断的连接桥连接,通过设置防盗环来实现瓶盖的防盗功能,在将瓶盖拧紧装配到瓶体之后,瓶盖上的防盗环就会卡在瓶体的定位圈上,当瓶盖第一次被拧开时,连接桥断开,瓶盖与防盗环分离,这样就可以有效识别及防止产品包装被盗开。
现有的瓶盖生产技术中,由于连接桥受力容易断裂,大都是先将瓶盖与防盗环一体注塑成型,通过一种切环机的设备对其防盗位置的胶位切成均匀的点位连接,扭开时点位断裂,形成防盗的功能,但是这样的生产工艺在实际生产过程中仍存在如下缺陷:生产工序较多,投入的人力物力较多,生产成本较大,同时也不利于生产效率的进一步提高;还有使用过程中,容易出现瓶盖没有扭到位而发现不了,从出现漏液的现象,造成微生物超标和发霉的现象。
因此,亟需开发一种工艺简单、密封性能及防盗性能良好的制备防盗瓶盖的方法。
发明内容
本发明的目的在于提供一种工艺简单、密封性能及防盗性能良好的制备防盗瓶盖的方法。
为了实现上述目的,本发明采用的技术方案是:
一种防盗瓶盖的制备方法,包括以下步骤:
(1)制作瓶盖形状的模具;
(2)将改性热塑性树脂加入注塑机料筒,在料筒内加热到熔融塑化后保温;
(3)合模,将熔融后的改性热塑性树脂注塑到模具中;
(4)保压,冷却加入成核剂,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯后期处理后,得到防盗瓶盖;
所述改性热塑性树脂选自改性高密度聚乙烯。
优选地,步骤(1)中,所述模具的材料是由不锈钢制成。
优选地,所述不锈钢选自铜、铁、锰和铝中的一种或几种。
优选地,步骤(2)中,所述改性高密度聚乙烯包括以下几种组分:高密度聚乙烯、纳米材料、抗氧剂、光稳定剂和交联剂。
优选地,所述高密度聚乙烯、纳米材料、抗氧剂、光稳定剂和交联剂的质量比为100:0.1-1:0.1-0.5:0.05-0.4:0.1-1。
优选地,所述纳米材料选自碳纳米管和纳米二氧化硅中的的一种或两种;所述抗氧剂选自抗氧剂1076和抗氧剂1010中的一种或两种。
优选地,所述光稳定剂选自邻羟基二苯甲酮类、苯并三唑类、水杨酸酯类中的一种或几种;所述交联剂选自2,5-二甲基-2,5-二叔丁基过氧化己烷、过氧化二苯甲酰、二-(4-甲基苯甲酰)过氧化物、过氧化二异丙苯、正丁基-4,4-二(叔丁基过氧化)戊酸酯中的一种或几种。
优选地,步骤(2)中,所述注塑机料筒的温度设置为第一段温度180℃-190℃、第二段温度190℃-200℃、第三段温度200℃-210℃、第四段温度210℃-220℃;步骤(2)中,所述熔融是210℃-220℃下,保温的时间为0.5-2小时。
优选地,步骤(4)中,所述成核剂选自硬脂酸钙、碳黑和硬脂酸钾中的一种或几种。
优选地,步骤(3)中,所述合模的压力设置为7-12MPa;步骤(4)中,所述保压的压力为1-5MPa,时间为5-15s;步骤(4)中,所述冷却的时间为5-30s;步骤(3)中,所述改性热塑性树脂注塑的射出压力设置为3.5-6.5MPa,时间设置为2-5s;步骤(4)中,所述开模的压力设置为5-9MPa,开模的距离设置为300-345mm;步骤(5)中,所述防盗瓶盖毛坯后期处理包括:毛坯去掉表面的毛刺、加磨和通过紫外线进行瓶盖表面杀菌。
一种防盗瓶盖,所述防盗瓶盖由所述的制备方法制得。
本发明的有益技术效果是:
本发明防盗瓶盖采用改性高密度聚乙烯作为原料,增加了韧性和自清洁型,碳纳米管的加入减少了瓶盖对粉尘的吸入;本发明制作工艺简单,密封性能及防盗性能良好,其防盗结构采用的是一种可视窗的结构,通过连接点,将盖体和防盗环连接成一体,可以通过一次成型,不需要进行二次加工,降低能耗,而且还具有防倒灌功用,本发明的防盗瓶盖不会产生漏液的情况,解决了微生物超标和发霉的问题。
本发明在模具制作过程中,将顶出结构设置为二次顶出,一次顶出时先把密封环脱离出来,此时推板在同步向前,待密封环达到限位位置时,推板继续沿着滑道向前,直到将瓶盖脱离模具,此过程中保证密封环完整性,也保证防盗环连接点的稳定,从而实现密封性能和防盗性能的良好。
具体实施方式
为使本发明的目的、技术方案和优点更加清楚明了,下面通过实施例,对本发明进行进一步详细说明。但是应该理解,此处所描述的具体实施例仅仅用以解释本发明,并不用于限制本发明的范围。
实施例1
一种防盗瓶盖的制备方法,包括以下步骤:
(1)采用铝和铁材料制成瓶盖形状的模具;
(2)将注塑机料筒温度设置为第一段温度185℃、第二段温度195℃、第三段温度210℃、第四段温度220℃,将高密度聚乙烯、碳纳米管、抗氧剂1076、苯并三唑类和2,5-二甲基-2,5-二叔丁基过氧化己烷按质量比为100:0.5:0.4:0.2:0.2加入注塑机料筒,在210℃-220℃下熔融并保温1.5小时;
(3)将压力设置为9MPa,合模,将熔融后的改性热塑性树脂注塑到模具中,改性热塑性树脂射出压力设置为6MPa,时间为5s;
(4)将压力保持在4.5-5.5MPa,时间为15s,冷却加入硬脂酸钙、碳黑,时间为15s,将压力设置为6MPa,距离设置为300mm,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯去掉表面的毛刺、打磨和通过紫外线进行瓶盖表面杀菌,得到防盗瓶盖。
对实施例1所得的防盗瓶盖进行抽检,测试其密封性及热稳定性,经测试,本实施例的防盗瓶盖的合格率为100%。
实施例2
一种防盗瓶盖的制备方法,包括以下步骤:
(1)采用铝和铁材料制成瓶盖形状的模具;
(2)将注塑机料筒温度设置为第一段温度185℃、第二段温度195℃、第三段温度210℃、第四段温度220℃,将高密度聚乙烯、碳纳米管、抗氧剂1076、苯并三唑类和过氧化二异丙苯按质量比为100:0.4:0.3:0.1:0.1加入注塑机料筒,在210℃-220℃下熔融并保温1.5小时;
(3)将压力设置为9MPa,合模,将熔融后的改性热塑性树脂注塑到模具中,改性热塑性树脂射出压力设置为6MPa,时间为5s;
(4)将压力保持在4.5-5.5MPa,时间为15s,冷却加入硬脂酸钙、碳黑,时间为15s,将压力设置为6MPa,距离设置为300mm,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯去掉表面的毛刺、打磨和通过紫外线进行瓶盖表面杀菌,得到防盗瓶盖。
对实施例2所得的瓶盖进行抽检,测试其密封性及热稳定性,经测试,本实施例的防盗瓶盖的合格率为99.8%。
实施例3
一种防盗瓶盖的制备方法,包括以下步骤:
(1)采用铝和铁材料制成瓶盖形状的模具;
(2)将注塑机料筒温度设置为第一段温度185℃、第二段温度195℃、第三段温度210℃、第四段温度220℃,将高密度聚乙烯、碳纳米管、抗氧剂1076、苯并三唑类和2,5-二甲基-2,5-二叔丁基按质量比为100:0.4:0.4:0.1:0.2加入注塑机料筒,在210℃-220℃下熔融并保温1.5小时;
(3)将压力设置为9MPa,合模,将熔融后的改性热塑性树脂注塑到模具中,改性热塑性树脂射出压力设置为6MPa,时间为5s;
(4)将压力保持在4.5-5MPa,时间为15s,冷却加入硬脂酸钙、碳黑,时间为30s,将压力设置为6MPa,距离设置为300mm,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯去掉表面的毛刺、打磨和通过紫外线进行瓶盖表面杀菌,得到防盗瓶盖。
对实施例3所得的瓶盖进行抽检,测试其密封性及热稳定性,经测试,本实施例的防盗瓶盖的合格率为99.9%。
对比例1
一种防盗瓶盖的制备方法,包括以下步骤:
(1)采用铝和铁材料制成瓶盖形状的模具;
(2)将注塑机料筒温度设置为第一段温度185℃、第二段温度195℃、第三段温度210℃、第四段温度220℃,将高密度聚乙烯加入注塑机料筒,在210℃-220℃下熔融并保温1.5小时;
(3)将压力设置为9MPa,合模,将熔融后的高密度聚乙烯到模具中,高密度聚乙烯射出压力设置为6MPa,温度设置为220℃,时间为5s;
(4)将压力保持在4.5-5.5MPa,时间为15s,冷却加入硬脂酸钙、碳黑,将压力设置为6MPa,距离设置为300mm,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯去掉表面的毛刺、打磨和通过紫外线进行瓶盖表面杀菌,得到防盗瓶盖。
对对比例1所得的瓶盖进行抽检,测试其密封性及热稳定性,经测试,本实施例的防盗瓶盖的合格率为90%。
上述表明采用改性后的高密度聚乙烯制备的防盗瓶盖,产品合格率都在99%以上,而采用普通高密度聚乙烯制备的防盗瓶盖,合格率只有90%。

Claims (10)

1.一种防盗瓶盖的制备方法,其特征在于,包括以下步骤:
(1)制作瓶盖形状的模具;
(2)将改性热塑性树脂加入注塑机料筒,在料筒内加热到熔融塑化后保温;
(3)合模,将熔融后的改性热塑性树脂注塑到模具中;
(4)保压,冷却加入成核剂,开模,脱模制成防盗瓶盖毛坯;
(5)将防盗瓶盖毛坯后期处理后,得到防盗瓶盖;
所述改性热塑性树脂选自改性高密度聚乙烯。
2.根据权利要求1所述的防盗瓶盖的制备方法,其特征在于,步骤(1)中,所述模具的材料是由不锈钢制成。
3.根据权利要求2所述的防盗瓶盖的制备方法,其特征在于,所述不锈钢选自铜、铁和镍中的一种或几种。
4.根据权利要求1所述的防盗瓶盖的制备方法,其特征在于,步骤(2)中,所述改性高密度聚乙烯包括以下几种组分:高密度聚乙烯、纳米材料、抗氧剂、光稳定剂和交联剂;所述高密度聚乙烯、纳米材料、抗氧剂、光稳定剂和交联剂的质量比为100:0.1-1:0.1-0.5:0.05-0.4:0.1-1。
5.根据权利要求4所述的防盗瓶盖的制备方法,其特征在于,所述纳米材料选自碳纳米管和纳米二氧化硅中的的一种或两种;所述抗氧剂选自抗氧剂1076和抗氧剂1010中的一种或两种。
6.根据权利要求4所述的防盗瓶盖的制备方法,其特征在于,所述光稳定剂选自邻羟基二苯甲酮类、苯并三唑类和水杨酸酯类中的一种或几种;所述交联剂选自2,5-二甲基-2,5-二叔丁基过氧化己烷、过氧化二苯甲酰、二-(4-甲基苯甲酰)过氧化物、过氧化二异丙苯和正丁基-4,4-二(叔丁基过氧化)戊酸酯中的一种或几种。
7.根据权利要求1所述的防盗瓶盖的制备方法,其特征在于,步骤(2)中,所述注塑机料筒的温度设置为第一段温度180℃-190℃、第二段温度190℃-200℃、第三段温度200℃-210℃、第四段温度210℃-220℃;所述熔融是在210℃-220℃下,保温的时间为0.5-2小时。
8.根据权利要求1所述的防盗瓶盖的制备方法,其特征在于,步骤(4)中,所述成核剂选自硬脂酸钙、碳黑和硬脂酸钾中的一种或几种。
9.根据权利要求1所述的防盗瓶盖的制备方法,其特征在于,步骤(3)中,所述合模的压力设置为7-12MPa;步骤(4)中,所述保压的压力为40-50MPa,时间为15-30s;步骤(4)中,所述冷却的时间为15-60s;所述改性热塑性树脂注塑的射出压力设置为4.5-6.5MPa,时间设置为2-5s;步骤(4)中,所述开模的压力设置为5-9MPa,开模的距离设置为180-245mm;步骤(5)中,所述防盗瓶盖毛坯后期处理包括:毛坯去掉表面的毛刺、加磨和和通过紫外线进行瓶盖表面杀菌。
10.一种防盗瓶盖,其特征在于,所述防盗瓶盖由权利要求1-9所述的制备方法制得。
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