This standard applies to sealing gaskets made of polyester/aluminum/polypropylene composite film and cardboard through adhesives, which are sealed by heat-sealing them to the mouth of polypropylene bottles for solid pharmaceutical packaging. The polyester/aluminum/polypropylene composite film used to produce polyester/aluminum/polypropylene sealing gaskets for pharmaceutical packaging should comply with the provisions of the General Rules for Composite Films and Bags for Pharmaceutical Packaging (YBB00132002).