Primary Blister Materials (Forming Films)
These are the materials used to create the cavity or "blister" that holds the product. They need to be moldable, durable, and provide a good barrier against moisture, oxygen, and other environmental factors.
Common Types:
PVC (Polyvinyl Chloride):
Widely used due to its low cost, clarity, and ease of thermoforming.
Suitable for non-moisture-sensitive products.
Not ideal for products requiring high barrier protection.
PVDC (Polyvinylidene Chloride)-Coated PVC:
Provides better moisture and oxygen barrier properties than plain PVC.
Often used for pharmaceuticals and food products.
COC (Cyclic Olefin Copolymer):
High clarity, excellent moisture barrier, and chemical resistance.
Commonly used for sensitive pharmaceutical products.
PET (Polyethylene Terephthalate):
Strong, rigid, and transparent.
Provides good barrier properties and is recyclable.
Often used for consumer goods and electronics.
PP (Polypropylene):
Good chemical resistance and durability.
Suitable for products requiring sterilization (e.g., medical devices).
APET (Amorphous Polyethylene Terephthalate):
Clear, rigid, and recyclable.
Often used for food and consumer product packaging.
PVC/PCTFE (Polychlorotrifluoroethylene):
Offers excellent moisture barrier properties.
Used for highly moisture-sensitive products.
