Finger pressure method and cotton ball blowing method are commonly used to evaluate the drying time of coating or liquid surface. Le loro differenze si riflettono principalmente nel principio del test e nella modalità operativa:

Finger pressure method:

Digital pressure method is to evaluate the dry time by finger finger pressure coating or liquid surface, feel whether it is still sticky or adhesive feeling. When the coating or liquid surface has no obvious viscosity or adhesion sensation, the surface can be considered to be dry. This method mainly relies on people’s sense of touch and experience, and belongs to subjective evaluation method.

La differenza nel tempo di asciugatura tra il metodo della pressione delle dita e il metodo del soffiaggio del batuffolo di cotone

Metodo di soffiaggio del batuffolo di cotone:

The cotton ball blowing method is to use a blowing tool (such as a blowing pump) per soffiare aria sulla superficie del rivestimento o del liquido, and observe whether there is adhesion on the surface of the cotton ball to evaluate the drying time. When there is no more adhesion on the surface of the cotton ball, la superficie può essere considerata asciutta. This method is more objective than the shiatsu method and relies on observation and judgment.

La differenza tra i due metodi risiede principalmente nella differenza del principio di prova e della modalità operativa. The acupressure method is mainly based on touch and experience. It needs to judge the dryness of the surface through the feeling of the fingers. The rule of blowing cotton balls is more objective by observing the adhesion of the surface of cotton balls. Both of these methods are relatively simple and fast methods for assessing surface dryness, ma non sono misurazioni accurate. They can only provide a general estimate of drying time, che è influenzato anche da una serie di fattori, come il tipo di rivestimento, temperatura ambiente, umidità, eccetera. For some applications that require high drying time, it may be necessary to use more accurate measurement methods and instruments for the evaluation of table drying time.