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电晕笔
电晕笔,又名表面张力测试笔、达因笔、电晕处理笔、及塑料薄膜表面张力检测笔。电晕笔是薄膜表面电晕度（达因）的测试工具，专门用于测定薄膜受电晕处理后的效果。各种规格的电晕笔能准确地测试出塑料薄膜表面张力是否达到试笔的数值。令使用者清楚了解此薄膜是否适合于印刷、复合或真空镀铝等等，从而有效地控制质量，减少因材质不合格所造成的损失。
Corona pen, also known as surface tension test pen, dyne pen, pen of corona treatment, plastic film surface tension detection pen. Corona pen is the testing tool to test corona (dynes) of the film’s surface , and specifically for measuring the effect of thin film by a corona treatment. The various specifications corona pen can accurately test the plastic film surface tension whether to reach the values in the test pen. It gives users a clear understanding whether this film is suitable for printing, compositing or vacuum aluminum plating, so it can effectively control the quality and reduce the losses caused by substandard material.
适用范围
使用于凹版印刷、胶印印刷、UV印刷、丝网印刷、扎染印刷、喷墨印刷、干式复合、挤压复合、吹膜、T型挤出薄膜、拉伸薄膜、涂布、镀铝等。
Scope of Application
For use in gravure printing, offset printing, UV printing, screen printing, Tie-dyed printing, inkjet printing, dry lamination, extrusion compound, blown film, T-extruded film, stretched film, a coating, aluminum plating and so on.
注意事项
使用后，请务必盖紧笔盖。请避开阳光直射，放在阴凉处保管。有效期限：表面张力测试笔6~8个月
note
After the use, please be sure to cover tightly with the pen cap.Please avoid direct sunlight, put it in the shade.Effective period: 6 ~ 8 months
适用材料
塑料薄膜类：PS、PE、PP、PET、PI、PC、NY、CPP、OPP、PVC，
导电性材料：铝箔、铜箔、碳箔、蒸镀膜。
其他材料：玻璃、陶瓷、塑料片材，塑料管材等。
Suitable materials
Plastic film class: PS, PE, PP, PET, PI and PCs, NY, CPP, OPP, PVC,
Conductive material: aluminum foil, copper foil, a carbon foil, vapor deposition film.
Other materials: glass, ceramic, plastic sheets, plastic pipe and so on.
一般选购常识
一般来说，基材形成墨滴，涂层和粘贴能力和表面的能量相关。如果PP，PE，PET等塑料薄膜的表面的能量低于所涂测试液的表面的张力，则形成珠点和画线收缩。因而，对大多数的基于印刷，塑胶的溶剂来说，测试笔的要求在36-40达因/厘米之间。基于墨液体要求测试笔在40-44达因/厘米之间。而一些碾压和涂层的应用要求表面能量在50达因/厘米或者以上。显而易见，在进行印刷，涂层和碾压前需要对表面的能量先预估。
General knowledge of Purchase
Generally, the substrate forms droplets and coating,and paste capability is related to surface energy . If the surface energy of the plastic film such as PP, PE, PET is lower than the tension of the coated surface of the test liquid, it will form the bead line and the drawing line will shrink. Thus,to the majority of printing, plastic solvent, the requirements of the test pen must be between 36-40 dyne / cm. While liquid ink requires test pen between 40-44 dyne / cm. Rolling and coating applications requires the surface energy about 50 dynes / cm or more. Obviously, before printing, coating and laminating,there is a need to estimate the energy of the surface first.
测定达因值方法
用达因笔在材料表面画一条线，2~3秒后，观察是否发生收缩并凝聚成水珠点。如有收缩水珠，则换低一级数值的达因笔再画直线，直至不收缩，没有水珠点，来确定物件的表面张力值。
The method of measure the dyne value
Use the dyne pen to draw a line on the surface of material,after 2 to 3 seconds, you can watch the line to see whether it shrink and form the water bead point.If there exists the water bead point.If there exist,change a lower level numberial dyne pen to draw a line until it doesn’t shrink without water dead point to /confirm/i the tension value of the article’s surface.
达因测试结果分析：
1、画线很平均地分布，不起任何珠点，则说明该薄膜表面张力，高于达因笔上所标出的指数，这种情况可以印刷。
2、画线慢慢地收缩，则说明该薄膜表面张力，稍低于达因笔上所标出的指数。这种情况印刷效果不好。
3、画线立即收缩，并且形成珠点，则说明该薄膜表面张力，很低于达因笔所标出的指数。这种情况不能印刷。
Dyne test result analysis:
1,Painting line is evenly distributed with no bead point,it states that the plastic film surface tension is highter than value markde on the dyne pen.it allowed to print at this case.
2,The painting line is shrinking slowly,it states that the plastic film surface tension is lower than the value marked on the dyne pen.It can’t have an effective printing result at this case.
3,The painting line is shrinking sharply and form the bead point.It states that the plastic film surface tension is lower than the value marked on the dyne pen largely.In this case it can’t allowed to print.