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有氣泡的纏繞膜時合格的産品嗎

作者：兴亚閱讀量：发布日期：2022/6/13 11:53:43

信息摘要：

有時候我們會發現纏繞膜上出現了許多氣泡這會對纏繞膜本身有影響嗎？它是個合格的纏繞膜嗎？

有時候我們會發現纏繞膜上出現了許多氣泡這會對纏繞膜本身有影響嗎？它是個合格的纏繞膜嗎？有气泡的缠绕膜肯定是质检不合格的，也不能作爲合格産品出售，所以我們在生産過程中要控制這種現象的發生，盡量避免。

爲了控制這些現象的發生，需要找出氣泡産生的原因，只有找出了原因，我們才能解決問題，通過對圖案的研究，我們找到了解決措施：

1、選擇適當的墨水，以增加塗布量

可根據需要選用適當的油墨，提高塗布量，加強膠水對膠膜的潤濕，改善局部上膠不良的缺陷，這樣可提高複合軸的溫度和壓力，可減少複合速度增加浸潤時間和上膠時間等。

2、加強塗布量和滾筒的管理

纏繞膜加工時，可將膠液預熱，提高複合壓輥的溫度，同時還可清洗塗布輥，加強塗布量和壓輥的管理。對一般新輥的塗布輥，在使用到500萬米之後，要進行鍍鋁外理，3次再鍍鉻外理後進行版外理，防止由幹不充分的塗布輥而導致的外觀不良和剝離強度低的問題。

3、塗布輥的定期更換

爲調節保護膜粘度，應注意定期更換塗布輥，在粘度符合工藝要求的前提下，通過膠水固含量與塗布輥的配合，達到塗布量要求。並調節幹燥條件，如風速，溫度等。此外，還增加了制作纏繞膜所用的塗膜量和複合壓輥的溫度，壓力，使壓輥的橡膠硬度提高到80-85℃之間，並目在壓輥前引入薄膜“包角”的角度調整，盡可能的使複合輥切線。

4、防潮措施

纏繞膜成型過程中應采取防潮措施，如環境幹燥，固化劑密封等，對改善纏繞膜的氣泡問題也有一定的作用，從而大大提高了卷繞膜的質量和使用效果。

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