復合包裝袋的白點和氣泡是怎么回事?2023/11/13
白點氣泡:①干燥不充分White spot bubbles: ① Insufficient drying②上膠量不足:督辦、復溶性差、轉移率下降。。 薄膜太厚② Insufficient glue application: poor supervision, poor solubility, and decreased transfer rate Thin film too thick③復合后膠未流平:膠分子量大、熟化不夠,復合熱輥溫度太低、氣溫較低而預熱輥沒用③ After compounding, the glue is not leveled: the molecular weight of the glue is large
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