CN107418466B - 一种用于低温防水箱体的封箱胶带的制作方法 - Google Patents

一种用于低温防水箱体的封箱胶带的制作方法 Download PDF

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CN107418466B
CN107418466B CN201710753826.9A CN201710753826A CN107418466B CN 107418466 B CN107418466 B CN 107418466B CN 201710753826 A CN201710753826 A CN 201710753826A CN 107418466 B CN107418466 B CN 107418466B
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王文朝
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Abstract

本发明属于特种封箱胶带加工技术领域,具体涉及一种用于低温防水箱体的封箱胶带的制作方法,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为10‑15℃的水浴装置快速冷却,冷却处理20‑30分钟后,除去薄膜表面的水分,在温度为60‑70℃的条件下烘干18‑25分钟,在0.2‑0.8kg/cm²的条件下进行卷取,得到成卷封箱胶带。本发明相比现有技术具有以下优点:本发明中所得封箱胶带在低温条件同时在涂有防水涂料的纸箱表面能具有较好的粘结力,能与防水涂料中物质有较好的相容性,进而使所得封箱胶带封合纸箱可以达到使用要求。

Description

一种用于低温防水箱体的封箱胶带的制作方法
技术领域
本发明属于特种封箱胶带加工技术领域,具体涉及一种用于低温防水箱体的封箱胶带的制作方法。
背景技术
胶带一般是指胶黏剂和基材等材料复合而成的胶黏制品,主要分为工业用胶带、标签和医疗用胶带,在工业用胶带中,纸箱封合用胶带机封箱胶带的使用数量较大,目前封箱胶粘带通常采用丙烯酸胶黏剂和双向拉伸聚丙烯基材复合得到,其中丙烯酸胶黏剂为水溶性或溶剂型,该丙烯酸胶黏剂在常规条件下具有透明性好、耐候性好和耐热老化的粘结力,从而能够满足普通纸箱封合的要求,但是在实际使用中冷饮箱体表面通常涂布防水涂料,现有粘结剂无法满足相应要求,在较小的外力条件下即可脱开,达不到封合要求,难以实际应用,在冷冻条件下丙烯酸黏胶剂拉伸强度和热封性能均受到影响,而现在还没有相关方面的研究和报道。
发明内容
本发明的目的是针对现有的问题,提供了一种用于低温防水箱体的封箱胶带的制作方法。
本发明是通过以下技术方案实现的:一种用于低温防水箱体的封箱胶带的制作方法,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为10-15℃的水浴装置快速冷却,冷却处理20-30分钟后,除去薄膜表面的水分,在温度为60-70℃的条件下烘干18-25分钟,在0.2-0.8kg/cm²的条件下进行卷取,得到成卷封箱胶带;
其中,所述胶水由以下重量份的原料制成:丁苯接枝高乙烯基聚丁二烯树脂22-28份,增粘树脂30-35份,松香甘油酯17-19份,1-烯丙基-3-甲基咪唑离子液6-10份,过硫酸钾1-4份,淀粉5-8份。
作为对上述方案的进一步改进,所述丁苯接枝高乙烯基聚丁二烯树脂制备过程中,苯乙烯含量为30%的丁苯大分子用量为单体丁二烯用量的3%,制备方法为在高纯氮的保护下,将丁二烯加氢汽油溶液和丁苯大分子溶液加入预先抽空充氮处理的带搅拌的反应釜中,所述丁二烯加氢汽油溶液的质量浓度为5-8%,加入相当于单体丁二烯重量的2%的五氯化钼,在60℃恒温反应6-8小时后,得到胶料,清洗、真空干燥后即得。
作为对上述方案的进一步改进,所述1-烯丙基-3-甲基咪唑离子液在微波功率为280W的条件下由1-烯丙基-3-甲基咪唑四氟硼酸盐合成。
作为对上述方案的进一步改进,所述增粘树脂为C5石油树脂或萜烯树脂中的一种。
作为对上述方案的进一步改进,所述胶水的制备方法为将原料按重量比混合后,在搅拌机内搅拌均匀,在真空度为-0.08~-0.06MPa的条件下处理45-50分钟,恢复常压静置至室温即得。
本发明相比现有技术具有以下优点:本发明中通过采用丁苯接枝高乙烯基聚丁二烯树脂为主要原料,配合其他原料以及在涂抹在薄膜上后低温处理,使所得封箱胶带在低温条件同时在涂有防水涂料的纸箱表面能具有较好的粘结力,其中,松香甘油酯和1-烯丙基-3-甲基咪唑离子液共同作用,能与防水涂料中物质有较好的相容性,进而使所得封箱胶带封合纸箱可以达到使用要求。
具体实施方式
实施例1
一种用于低温防水箱体的封箱胶带的制作方法,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为12℃的水浴装置快速冷却,冷却处理25分钟后,除去薄膜表面的水分,在温度为65℃的条件下烘干20分钟,在0.5kg/cm²的条件下进行卷取,得到成卷封箱胶带;
其中,所述胶水由以下重量份的原料制成:丁苯接枝高乙烯基聚丁二烯树脂25份,增粘树脂32份,松香甘油酯18份,1-烯丙基-3-甲基咪唑离子液8份,过硫酸钾2份,淀粉6份。
其中,所述丁苯接枝高乙烯基聚丁二烯树脂制备过程中,苯乙烯含量为30%的丁苯大分子用量为单体丁二烯用量的3%,制备方法为在高纯氮的保护下,将丁二烯加氢汽油溶液和丁苯大分子溶液加入预先抽空充氮处理的带搅拌的反应釜中,所述丁二烯加氢汽油溶液的质量浓度为7%,加入相当于单体丁二烯重量的2%的五氯化钼,在60℃恒温反应7小时后,得到胶料,清洗、真空干燥后即得。
其中,所述1-烯丙基-3-甲基咪唑离子液在微波功率为280W的条件下由1-烯丙基-3-甲基咪唑四氟硼酸盐合成;所述增粘树脂为萜烯树脂。
其中,所述胶水的制备方法为将原料按重量比混合后,在搅拌机内搅拌均匀,在真空度为-0.07MPa的条件下处理48分钟,恢复常压静置至室温即得。
实施例2
一种用于低温防水箱体的封箱胶带的制作方法,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为10℃的水浴装置快速冷却,冷却处理20分钟后,除去薄膜表面的水分,在温度为70℃的条件下烘干18分钟,在0.8kg/cm²的条件下进行卷取,得到成卷封箱胶带;
其中,所述胶水由以下重量份的原料制成:丁苯接枝高乙烯基聚丁二烯树脂22份,增粘树脂35份,松香甘油酯17份,1-烯丙基-3-甲基咪唑离子液10份,过硫酸钾4份,淀粉8份。
其中,所述丁苯接枝高乙烯基聚丁二烯树脂制备过程中,苯乙烯含量为30%的丁苯大分子用量为单体丁二烯用量的3%,制备方法为在高纯氮的保护下,将丁二烯加氢汽油溶液和丁苯大分子溶液加入预先抽空充氮处理的带搅拌的反应釜中,所述丁二烯加氢汽油溶液的质量浓度为5%,加入相当于单体丁二烯重量的2%的五氯化钼,在60℃恒温反应8小时后,得到胶料,清洗、真空干燥后即得。
其中,所述1-烯丙基-3-甲基咪唑离子液在微波功率为280W的条件下由1-烯丙基-3-甲基咪唑四氟硼酸盐合成;所述增粘树脂为萜烯树脂。
其中,所述胶水的制备方法为将原料按重量比混合后,在搅拌机内搅拌均匀,在真空度为-0.06MPa的条件下处理50分钟,恢复常压静置至室温即得。
实施例3
一种用于低温防水箱体的封箱胶带的制作方法,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为15℃的水浴装置快速冷却,冷却处理30分钟后,除去薄膜表面的水分,在温度为60℃的条件下烘干25分钟,在0.2kg/cm²的条件下进行卷取,得到成卷封箱胶带;
其中,所述胶水由以下重量份的原料制成:丁苯接枝高乙烯基聚丁二烯树脂28份,增粘树脂30份,松香甘油酯19份,1-烯丙基-3-甲基咪唑离子液6份,过硫酸钾1份,淀粉5份。
其中,所述丁苯接枝高乙烯基聚丁二烯树脂制备过程中,苯乙烯含量为30%的丁苯大分子用量为单体丁二烯用量的3%,制备方法为在高纯氮的保护下,将丁二烯加氢汽油溶液和丁苯大分子溶液加入预先抽空充氮处理的带搅拌的反应釜中,所述丁二烯加氢汽油溶液的质量浓度为8%,加入相当于单体丁二烯重量的2%的五氯化钼,在60℃恒温反应6小时后,得到胶料,清洗、真空干燥后即得。
其中,所述1-烯丙基-3-甲基咪唑离子液在微波功率为280W的条件下由1-烯丙基-3-甲基咪唑四氟硼酸盐合成;所述增粘树脂为萜烯树脂。
其中,所述胶水的制备方法为将原料按重量比混合后,在搅拌机内搅拌均匀,在真空度为-0.08MPa的条件下处理45分钟,恢复常压静置至室温即得。
设置对照组1,将实施例1中丁苯接枝高乙烯基聚丁二烯树脂替换为等重量的高乙烯基聚丁二烯树脂,其余内容不变;设置对照组2,将实施例1中丁苯接枝高乙烯基聚丁二烯树脂替换为等重量的聚丙烯树脂,其余内容不变;设置对照组3,将实施例1中松香甘油酯去掉,其余内容不变;设置对照组4,将实施例1中1-烯丙基-3-甲基咪唑离子液去掉,其余内容不变;
以上各组基材为双向聚丙烯薄膜,各组涂胶厚度为0.03mm,得到封箱胶粘带后,在涂布防水涂料的纸箱,在低温(1-3℃)条件下,按照中国国家标准 GB/T2792-1998《压敏胶粘带180度剥离强度试验方法》对其粘结力进行检测,按照中国国家标准GB/T4851-1998《压敏胶粘带持粘性试验方法》和中国国家标准 GB/T4852-2002《压敏胶粘带初粘性试验方法(滚球法)》分别测试所述封箱胶粘带的持粘性和初粘性,得到以下结果:
表1
组别 剥离强度(kg/25mm) 初粘性 持粘性(h) 拉伸强度(N·25mm)
标准 >4 18#钢球合格 ≥24 >30
实施例1 4.7 合格 47 42
实施例2 4.4 合格 43 39
实施例3 4.5 合格 44 40
对照组1 4.1 合格 28 35
对照组2 3.6 不合格 5 32
对照组3 4.2 不合格 13 34
对照组4 3.8 不合格 7 36
通过表1中数据可以看出,本发明中制备所得封箱胶粘带在涂布防水剂的箱体表面,且在低温条件下能满足封装要求,改变原料组分或制备方法,均会影响其粘结性。

Claims (4)

1.一种用于低温防水箱体的封箱胶带的制作方法,其特征在于,通过涂布机将胶水自动涂抹到塑料薄膜上,涂抹完成后经水温为10-15℃的水浴装置快速冷却,冷却处理20-30分钟后,除去薄膜表面的水分,在温度为60-70℃的条件下烘干18-25分钟,在0.2-0.8kg/cm²的条件下进行卷取,得到成卷封箱胶带;
其中,所述胶水由以下重量份的原料制成:丁苯接枝高乙烯基聚丁二烯树脂22-28份,C5石油树脂或萜烯树脂30-35份,松香甘油酯17-19份,1-烯丙基-3-甲基咪唑离子液6-10份,过硫酸钾1-4份,淀粉5-8份。
2.如权利要求1所述一种用于低温防水箱体的封箱胶带的制作方法,其特征在于,所述丁苯接枝高乙烯基聚丁二烯树脂制备过程中,苯乙烯含量为30%的丁苯大分子用量为单体丁二烯用量的3%,制备方法为在高纯氮的保护下,将丁二烯加氢汽油溶液和丁苯大分子溶液加入预先抽空充氮处理的带搅拌的反应釜中,所述丁二烯加氢汽油溶液的质量浓度为5-8%,加入相当于单体丁二烯重量的2%的五氯化钼,在60℃恒温反应6-8小时后,得到胶料,清洗、真空干燥后即得。
3.如权利要求1所述一种用于低温防水箱体的封箱胶带的制作方法,其特征在于,所述1-烯丙基-3-甲基咪唑离子液在微波功率为280W的条件下由1-烯丙基-3-甲基咪唑四氟硼酸盐合成。
4.如权利要求1所述一种用于低温防水箱体的封箱胶带的制作方法,其特征在于,所述胶水的制备方法为将原料按重量比混合后,在搅拌机内搅拌均匀,在真空度为-0.08~-0.06MPa的条件下处理45-50分钟,恢复常压静置至室温即得。
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