Nel campo del packaging farmaceutico, PVC (cloruro di polivinile) e PVDC (copolimero di cloruro di polivinile/acetato di polivinile) vengono solitamente utilizzati per la laminazione con foglio di alluminio. Both have certain strengths and applicability, but may have different applications in specific situations.

PVC and aluminum foil composite:

Prestazioni barriera: The composite film of PVC and aluminum foil has good oxygen and water vapor barrier performance, which can protect medicines from the influence of moisture and oxygen.
Trasparenza: PVC and aluminum foil composite film can have a certain degree of transparency, making the medicines in the package visible and easy to observe.

Chemical resistance: PVC and aluminum foil composite film has a certain chemical resistance, which can protect the drug from the influence of the external environment.

Efficacia dei costi: The cost of PVC and aluminum foil lamination is relatively low, which is suitable for some affordable pharmaceutical packaging needs.

PVDC and aluminum foil composite:

Elevate prestazioni di barriera: The composite film of PVDC and aluminum foil has excellent oxygen and water vapor barrier performance, which can better protect drugs from oxygen, umidità e altri fattori esterni.
High chemical resistance: PVDC and aluminum foil composite film has excellent chemical resistance, which can effectively protect the stability and expiration date of drugs.

Sicurezza: PVDC is generally regarded as a food-grade material with good safety and stability.
Applicable to humidity-sensitive pharmaceuticals: PVDC and aluminum foil composite film has good barrier performance to moisture, and is suitable for humidity-sensitive pharmaceutical packaging.

Perciò, the choice of PVC and aluminum foil composite or PVDC and aluminum foil composite should be comprehensively considered according to the characteristics of specific drugs, requisiti di imballaggio, cost factors, and regulatory requirements. In some pharmaceutical packaging that requires high barrier properties and is sensitive to humidity, PVDC and aluminum foil composite films may be more suitable; while in some cases that are more sensitive to cost requirements, PVC and aluminum foil composite films may have more advantages.