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新型喷雾技术改进了导管喷涂的工艺流程 - China Medical Device Manufacturer
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Sat, January 20th, 2018

2007 春季刊 » 行业新闻
新型喷雾技术改进了导管喷涂的工艺流程

Harland医疗系统公司将EFD的精密喷雾胶阀系统应用于导尿管的UV固化喷涂过程,成功地解决了胶体堵塞导管口的问题。
医疗器械领域的喷涂工艺对精密度和可控性一直都有很高的要求。在现今的喷涂领域里,水溶性液体、抗菌剂等其他生物溶剂的应用越来越普及,越来越多样化,喷涂工艺也日趋复杂化。因此,找到有效而又能最大限度节约成本的解决方案就变得至关重要。

位于美国明尼苏达的Harland医疗系统公司(www.harlandmedical.com)从事自动化模块的研发,通过不同模块及设备之间的灵活组合,提供各种涂布应用的解决方案。设备制造商除了外包喷涂作业或定制整套厂内喷涂设备之外,有更灵活、更划算的选择。Harland公司的市场部副总裁Drew Summerville表示:“我们为客户提供的自动化模块喷涂系统在性能上与度身定制的喷涂设备不相上下,但无需高昂的成本投入或长时间的交货期。这一点,对于需要尽快投入市场竞争的新产品,或者生命周期较短的产品而言,无疑是一个巨大的竞争优势。”

Harland最近为一家专业从事导尿管生产的供应商成功地装配了一套喷涂系统生产线。由于在传统的浸入式涂布工艺中,UV胶很容易进入导尿管顶部的通孔,造成导管堵塞,所以Harland必须找到一个更为有效的喷涂方案,来满足该客户大规模生产的需求。Summerville解释道:“当导管被浸入到胶体中的时候,由于液压的作用,往往会导致胶体将管口堵塞,遇到复杂形状的时候尤其如此。”

面对这样的难题,Harland通过使用EFD781系列喷雾阀找到了解决办法。与传统的喷雾阀不同,EFD公司生产的781系列低压低流量喷雾阀可在喷嘴处产生极低的压力,确保流体均一,雾化稳定,并且几乎完全不会产生过量喷涂。

在这套系统中,一个悬挂有48根导管的托盘通过传送带进入喷涂装置,移动至一个矩形喷涂槽上方。在喷涂槽较长的两端分别等距离固定着4个EFD胶阀。当胶阀收到系统信号开始工作时,托盘同时在固定范围内上下左右移动,从而确保每根导管均匀一致的定量喷涂。

这一全新自动化系统可在3分钟内完成48根导管的整套清洗,喷涂,以及固化流程,EFD胶阀也大大减低了UV胶在喷涂过程中覆盖或堵塞导管口的可能性。另一个优点是,所有的喷涂材料都是通过密闭的压力储液容器直接送入胶阀,因此缩短了更换材料的耗时作业,并且减少了相应的停工时间。

Summerville说:“EFD的精密胶阀提供了有效的方案,喷涂的效果与浸入式涂布工艺相当,甚至更胜一筹,同时更减少了诸如堵塞管口或者胶体渗入导管等问题的发生。”


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