Most plastic seals are made of PP (polypropylene) and PE (polyethylene) through a certain ratio adjustment. Polypropylene (PP) has good rigidity and can increase the hardness of the seal. Polyethylene (addition of polyethylene) makes the seal a waxy shape that can withstand low temperatures. By adjusting the ratio of PP and PE, the plastic seal has the characteristics of two materials, and the use performance of the seal is improved. In addition, ordinary seals without laser powder will have a lighter font after laser printing, so laser powder is also an indispensable material in plastic seals. For example, if you need to add special luminous properties, you can add a certain proportion of phosphor to the plastic seal to achieve the luminous effect.

Plastic seals are items that are used in our daily production and life. Its sturdiness, durability, flexibility, and bending make it possible to mark and seal most items and equipment. The source of these characteristics is determined by the plastic material used, so what materials are common plastic seals made of ?