Pull-off sealing caps are composed of an outer cap(with polypropylene as the major material).an inter cap (with polypropylene as the major material) and a polypropylene rubber disc.
The inner cap will be in direct contact with the infusion product and it can fully guarantee the quality of the product.the rubber disc is punctured through during infusion and it serves to tightly seal the container. and the function of the outer cap is to protect the product against bacteria, This kind of product is applicable for soft infusion bags with hard ports and plastic infusion bottles.
