Medicinal composite packaging materials mainly include medicinal PVC plastic bottles. It is lightweight and cost-effective, easy to produce on a large scale, and can be made into bottles of various specifications and colors. Plastic bottles have excellent printing performance, making them the main packaging containers for drugs. The drugs packaged in plastic bottles mainly include solid tablets, pills, capsules, and powders of oral preparations, as well as liquid solutions, emulsions, etc.

Plastic bottles used for drug packaging are mainly made of materials such as polyvinyl chloride (PVC), polyethylene, polypropylene, polystyrene, etc. Medicinal polyvinyl chloride rigid sheet (PVC) is the underlying material that makes up aluminum-plastic blister packaging. In order to improve the barrier properties of PVC hard sheets, PVC/PVDC composite hard sheets can be used, or cold aluminum "lunch box" packaging can be used, and desiccants and aluminum-plastic composite bags can be added for packaging. There are various forms of medicinal composite films and bags, with material structures including paper/plastic, plastic/aluminum plated plastic, paper/aluminum foil/plastic, and plastic/aluminum foil/plastic, among others, with increasing barrier properties.

The material of plastic itself is divided into PE, CPP, BOPE, BOPET, BOPA, etc. Due to its strong comprehensive advantages and unparalleled material superiority, although it may cause certain harm to the environment, it has still been widely welcomed. Its usage has grown rapidly and has partially replaced other materials such as glass infusion bottles. Drug manufacturers can choose suitable pharmaceutical packaging based on the barrier performance requirements of packaging materials and the packaging form of the drug, taking into account other factors such as transparency, aesthetics, convenience of drug retrieval, and economy.

The sheets used for vacuum packaging are called hard sheets or films, and commonly used ones include PET (polyethylene terephthalate) hard sheets, PVC (polyvinyl chloride) hard sheets, and PS (polystyrene) hard sheets. PS hard sheets have low density, poor toughness, and are easy to burn. When burned, styrene gas (a harmful gas) is produced, so they are generally used

Produce various vacuum formed trays for industrial use. PVC hard sheets have moderate toughness and are not easy to burn. When burned, chlorine gas is produced, which has a certain impact on the environment. PVC is easy to heat seal and can be sealed with sealing machines and high-frequency machines. It is the main raw material for producing transparent vacuum formed products. PET hard sheets have good toughness, high transparency, are easy to burn, and do not produce harmful gases when burned. They are environmentally friendly materials, but they are expensive and suitable for making vacuum formed products. The vacuum formed shells in European and American countries generally require the use of PET hard sheets, but they are not easy to heat seal, which brings great difficulties to packaging. In order to solve this problem, people composite a layer of PVC film on the surface of PET, named PETG hard sheets, but the price is higher.