离型纸的剥离力主要取决于硅油配方和涂布量,在硅油配方不变的情况下,涂布量的多少直接影响到剥离性能。 较高的涂布量,能够密实地将原纸或淋膜后的原纸覆盖,保证硅油均匀分布。 而较低的硅油涂布量,则容易出现漏涂等现象,致使剥离不良。有些离型涂布供应商为节约成本以降低硅油涂布量,致使剥离偏重,生产出重离型纸,在使用时是具有相当风险的。 常温剥离力,在常温下使用Tesa7475通过标准测试方法得到的剥离力数据,单位是N/25mm,可以转换成多少克。
一、一般0.15N/25mm,即15克左右的剥离力,俗称为轻剥离;
二、0.250N/25mm,即20-30克的剥离力,俗称为中剥离;
三、0.4~0.6N/25mm,即40-60克的剥离力,俗称为重剥离;
四、当然也有0.03~0.05N/25mm,即3~5克的剥离力,俗称为超轻剥离;
五、也有1.00N/25mm,即100克以上的剥离力,俗称为超重剥离。
残余粘着率,是指离型纸在经过第一次剥离后,第二次剥离时的力,经计算后得到的数据,主要反映硅油固化的效果。
离型纸技术指标的测试是一件相当复杂的工程。一般电子厂、胶带厂仅能测试后几项数据。
The stripping force of release paper mainly depends on the silicone oil formula and coating quantity. In the case of the silicone oil formula unchanged, the amount of coating directly affects the stripping performance. High coating capacity, can densely cover the base paper or the coated base paper, to ensure the uniform distribution of silicone oil. The lower the amount of silicone oil coating, it is easy to appear the phenomenon of coating leakage, resulting in poor stripping. Some release coating suppliers in order to save cost to reduce the amount of silicone coating, resulting in heavy stripping, the production of heavy release paper, in use is quite risky. Normal temperature stripping force, at room temperature using Tesa7475 stripping force data obtained by standard test methods, the unit is N/25mm, can be converted into grams.
A general 0.15N/25mm, that is, about 15 grams of peeling force, commonly known as light peeling;
Two, 0.250N/25mm, that is, 20-30 grams of stripping force, commonly known as the stripping;
Three, 0.4~0.6N/25mm, that is, 40-60 grams of stripping force, commonly known as heavy stripping;
Four, of course, there are 0.03~0.05N/25mm, that is, 3~5 grams of peeling force, commonly known as ultra-light peeling;
Five, there is also 1.00N/25mm, that is, more than 100 grams of stripping force, commonly known as overweight stripping.
Residual adhesion rate refers to the force of the release paper after the first peeling and the second peeling. The data obtained after calculation mainly reflects the curing effect of silicone oil.
It is a very complicated project to test the technical index of release paper. General electronic factory, tape factory can only test the last few data.