Study on the influence of ink printing on the properties of PETG shrinkable film
In this paper,the properties of the film after printing and storage for a period of time are studied.The results show that the tensile strength and elongation at break decrease with the increase of printing layers,and the corresponding elastic modulus decreases.The stiffness increases with the increase of printing ink layers,on the contrary,the shrinkage force of the film decreases with the increase of printing ink layers.In addition,the film after the printing ink is placed at room temperature has no obvious effect on its performance,but the film is subjected to wet and thermal aging,its mechanical properties and the application of shrinkage sleeve will be affected.