Application of Testing Instrument in Plaster Adhesion Testing

If you want to get rid of rheumatism, relieve pain, eliminate seizures, and eliminate stasis, then many people will want plasters (patches). Plasters (patches) are traditional Chinese medicine preparations in the medical field, and their adhesion (adhesion) has an important influence in use. Only in accordance with the provisions of the pharmacopoeia, the initial viscosity (initial tack), holding tack (holding tack), and peel strength of the plaster should be tested to ensure that it will not be loose or difficult to peel off.

How to detect plaster? This requires the use of a series of testing instruments. According to the “Measuring Method of Adhesive Adhesion Forces” and the use of testing instruments, the three major adhesion indexes of plasters are well known.

1, using the initial viscous tester, the use of slope rolling ball measurement principle, can test the initial viscosity of plaster. Adjust the initial stickiness tester's tilt plate to 30 degrees, fix the plaster test sample on it, and test its initial viscosity according to the largest number of stainless steel balls on the adhesive sticky surface.

2, using a sticky tester, adhesive tape press roller, etc. to detect the sticky force of the plaster.

3. The peel strength of the plaster was measured using an electronic peel tester or an intelligent electronic tensile tester. The backing of the plaster was fixed on the test board, and the polyester film was placed on the sample and rolled with a pressure roller to the joint without bubbles. The free end of the polyester film was folded in half, clamped on a tester, the tester was started, and the peel strength of the plaster was detected.