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如何分析珠光膜气泡袋出现分层问题与解决办法?

发布日期:2020-05-29 作者:www.jnsuliao.com 点击:

  珠光膜气泡袋在冷饮职业的应用较为广泛,分层实质上是剥离(复合)强度存在问题的表现。问题产生主要由以下几方面引起:
  Pearlescent film bubble bags are widely used in cold drink industry, and delamination is essentially the manifestation of peeling (composite) strength problems. The problems are mainly caused by the following aspects:
  1) 珠光膜资料或印刷资料表面张力低,不符合印刷或复合要求。
  1) The surface tension of pearlescent film materials or printing materials is low, which does not meet the printing or composite requirements.
  2) 干燥温度操控不妥或使用的溶剂很多残留影响剥离强度。
  2) Improper drying temperature control or use of many solvent residues affect the peel strength.
  3) 印刷油墨与印刷基材不亲和,相容性欠好。
  3) Printing ink and printing substrate are not compatible, the compatibility is not good.
  4) 复合烘箱温度操控不妥,对溶剂蒸发造成严重影响。
  4) Improper temperature control of compound oven has a serious impact on solvent evaporation.
  5) 复合辊温度偏低 :进步复合辊温度。其实复合辊温度的凹凸,应该与机速、资料的厚薄有很大的联系,还与胶水的性质有联系。
  5) Low temperature of composite roller: improve the temperature of composite roller. In fact, the concave convex temperature of the composite roller should be closely related to the machine speed, the thickness of the data, and the nature of the glue.
  6) 熟化时间或温度操控上出现问题。
  6) Problems in aging time or temperature control.
  当时在展开层与层间的剥离强度检测时存在一些误区:只检测非热封区域的剥离强度,而忽略对热封部位复合强度的检测。但分层却往往出现在热封区域。所以要想保证质量必须要对非热封区域与热封区域分别进行检测,只有悉数到达指标要求才能判定合格。
  At that time, there were some misunderstandings in the detection of peel strength between developing layers and layers: only the peel strength of non heat sealing area was detected, while the detection of composite strength of heat sealing area was ignored. However, delamination often occurs in the heat sealing area. Therefore, in order to ensure the quality, it is necessary to test the non heat sealing area and the heat sealing area respectively, and only when all of them reach the index requirements can they be judged as qualified.
  为便利各企业了解剥离强度检测,现将检测进程中的几个细节进行汇总,以供参考:
  In order to facilitate enterprises to understand peel strength testing, several details in the testing process are summarized for reference:
济南塑料袋
  1)规范参照:履行GB 8808《软质复合塑料资料剥离试验办法》之规范。
  1) Specification reference: comply with GB 8808 "soft composite plastic data peel test method".
  2)制备试样注意事项: 一定要将样品宽度方向的两头除掉50 mm之后再取样(如有条件),取样后将试样预剥开不要当即忙于试验,而是先要检测被剥开部分应当无损伤方可;若试样不易剥开时可用溶剂处理,但要注意试验一定要在溶剂完全蒸发后进行,并且一定要适当增加预剥开区域的长度,以免测试结果受到溶剂的影响。
  2) Precautions for sample preparation: be sure to remove both ends of the sample width direction by 50 Mm and then take the sample (if possible). After taking the sample, pre peel the sample not to be busy with the test immediately, but to detect that the peeled part should be free of damage; if the sample is not easy to peel, it can be treated with solvent, but it should be noted that the test must be carried out after the solvent has completely evaporated, and the length of pre peel area must be increased appropriately to avoid the influence of solvent on the test results.
  3)试验速度:规范上有A、B两种速度,但现在遍及履行A法300mm/min的试验速度。
  3) Test speed: there are two speeds of a and B in the specification, but now the test speed of 300 mm / min of a method is widely performed.
  4)试样装夹注意事项:一定要保证试样装夹在试验机的上下侧(或左右侧)夹头上后,试样的纵向线要与上、下夹头的线重合。
  4) Precautions for specimen clamping: after the specimen is clamped on the upper and lower (or left and right) chucks of the testing machine, the longitudinal center line of the specimen shall coincide with the center line of the upper and lower chucks.
  5)试验机挑选:包装资料的剥离强度不同于其它职业剥离强度的进程数据处理方式,为保证数据精确一定要挑选包装职业专用的拉力试验机,不然数据会有出入。
  5) Selection of testing machine: the peel strength of packaging materials is different from the process data processing mode of peel strength of other professions. In order to ensure the accuracy of data, it is necessary to select a special tensile testing machine for packaging profession, otherwise the data will be different.