High-speed plasma treatment of polyethylene terephthalate films using ultrasound assisted dielectric barrier discharge,Packaging Technology and Science

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High-speed plasma treatment of polyethylene terephthalate films using ultrasound assisted dielectric barrier discharge
Packaging Technology and Science ( IF 2.8 ) Pub Date : 2021-05-10 , DOI: 10.1002/pts.2579
Cheng Fang _{1,

2} , Yukihiro Kusano ₃ , Alexander Bardenshtein ₃

Affiliation

Polyethylene-terephthalate (PET) films were treated using an air-to-air type atmospheric pressure dielectric barrier discharge (DBD) plasma in helium with ultrasonic irradiation, particularly for aiming at improving wettability. Airborne ultrasound was irradiated to the plasma using a pneumo-acoustic stem-jet Hartmann's generator. The wettability was significantly improved even when the treatment speed was up to 300 mm/s, corresponding to an estimated exposure time of approximately 30 ms. It is at least a factor of 30 shorter than the time required to achieve the same level of plasma treatment effect without ultrasonic irradiation. This effect opens an opportunity for industrial implementation of high-speed plasma treatment of PET flexible packaging films by a straightforward embedding of pneumatic generators of ultrasound into existing wide-web roll-to-roll commercial machines based on DBD.

中文翻译：

使用超声辅助介质阻挡放电对聚对苯二甲酸乙二醇酯薄膜进行高速等离子体处理

聚对苯二甲酸乙二醇酯 (PET) 薄膜在氦气中使用空气对空气型大气压介质阻挡放电 (DBD) 等离子体和超声波辐照进行处理，特别是为了提高润湿性。使用气声茎射流 Hartmann 发生器将机载超声照射到等离子体中。即使处理速度高达 300 毫米/秒，润湿性也得到显着改善，对应的估计暴露时间约为 30 毫秒。它比没有超声波照射达到同等水平的等离子处理效果所需的时间至少短了30倍。

更新日期：2021-05-10

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