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如何分析珠光膜氣泡袋出現分層問題與解決辦法?

發布日期:2020-05-29 作者:www.dlqcwz.com 點擊:

  珠光膜氣泡袋在冷飲職業的應用較為廣泛,分層實質上是剝離(複合)強度存在問題的表現。問題產生主要由以下幾方麵引起:
  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) 珠光膜資料或印刷資料表麵張力低,不符合印刷或複合要求。
  1) The surface tension of pearlescent film materials or printing materials is low, which does not meet the printing or composite requirements.
  2) 幹燥溫度操控不妥或使用的溶劑很多殘留影響剝離強度。
  2) Improper drying temperature control or use of many solvent residues affect the peel strength.
  3) 印刷油墨與印刷基材不親和,相容性欠好。
  3) Printing ink and printing substrate are not compatible, the compatibility is not good.
  4) 複合烘箱溫度操控不妥,對溶劑蒸發造成嚴重影響。
  4) Improper temperature control of compound oven has a serious impact on solvent evaporation.
  5) 複合輥溫度偏低 :進步複合輥溫度。其實複合輥溫度的凹凸,應該與機速、資料的厚薄有很大的聯係,還與膠水的性質有聯係。
  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) 熟化時間或溫度操控上出現問題。
  6) Problems in aging time or temperature control.
  當時在展開層與層間的剝離強度檢測時存在一些誤區:隻檢測非熱封區域的剝離強度,而忽略對熱封部位複合強度的檢測。但分層卻往往出現在熱封區域。所以要想保證質量必須要對非熱封區域與熱封區域分別進行檢測,隻有悉數到達指標要求才能判定合格。
  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.
  為便利各企業了解剝離強度檢測,現將檢測進程中的幾個細節進行匯總,以供參考:
  In order to facilitate enterprises to understand peel strength testing, several details in the testing process are summarized for reference:
濟南塑料袋
  1)規範參照:履行GB 8808《軟質複合塑料資料剝離試驗辦法》之規範。
  1) Specification reference: comply with GB 8808 "soft composite plastic data peel test method".
  2)製備試樣注意事項: 一定要將樣品寬度方向的兩頭除掉50 mm之後再取樣(如有條件),取樣後將試樣預剝開不要當即忙於試驗,而是先要檢測被剝開部分應當無損傷方可;若試樣不易剝開時可用溶劑處理,但要注意試驗一定要在溶劑完全蒸發後進行,並且一定要適當增加預剝開區域的長度,以免測試結果受到溶劑的影響。
  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)試驗速度:規範上有A、B兩種速度,但現在遍及履行A法300mm/min的試驗速度。
  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)試樣裝夾注意事項:一定要保證試樣裝夾在試驗機的上下側(或左右側)夾頭上後,試樣的縱向線要與上、下夾頭的線重合。
  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)試驗機挑選:包裝資料的剝離強度不同於其它職業剝離強度的進程數據處理方式,為保證數據精確一定要挑選包裝職業專用的拉力試驗機,不然數據會有出入。
  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.