High Barrier Property PET/PVDC Sheets for Medcial Packaging Material

PET/PVDC high - barrier performance pharmaceutical packaging materials, leveraging the complementary advantages of PET (polyethylene terephthalate) and PVDC (polyvinylidene chloride), demonstrate excellent performance in the field of pharmaceutical packaging. Here is a detailed description from aspects such as material properties, performance advantages, common forms, rugular size and application scenarios:

Material Composition and Properties

1) PET: It has good mechanical strength, enabling the packaging to maintain a certain shape and rigidity, with excellent tensile and impact resistance, and is not easily damaged. Meanwhile, PET has good transparency, facilitating the observation of the state of drugs inside the packaging. In addition, it has good chemical stability, being resistant to corrosion by chemicals such as acids and alkalis, and not prone to chemical reactions with drugs.

2) PVDC: It is a high - performance barrier material, with extremely strong barrier capabilities against oxygen, water vapor, carbon dioxide, and various odors. It can effectively prevent drugs from oxidation, moisture absorption, and deterioration, thus extending the shelf life of drugs. Moreover, PVDC has good chemical stability and oil resistance, and can meet the packaging requirements of various drugs.

Performance Advantages

1) High Barrier Property: After compounding PET and PVDC, the packaging's barrier performance against gases and water vapor can be significantly improved. It can effectively block the entry of external oxygen, preventing the oxidation reaction of easily oxidized components (such as vitamins, certain antibiotics) in drugs, and avoiding discoloration and failure of drugs; at the same time, the extremely low water vapor transmission rate can prevent drugs from absorbing moisture. For example, some moisture - absorbing Chinese medicine pieces and granules can maintain a dry state, reducing the risk of mildew.

2) Safety: Both materials meet the relevant standards for pharmaceutical packaging materials. During the contact process with drugs, they will not release harmful substances or react with drugs, ensuring the safety and effectiveness of drugs. Additionally, the PET and PVDC composite packaging can effectively block the contamination of external microorganisms, dust, etc., providing a relatively clean storage environment for drugs.

3) Good Processing Performance: PET is easy to form and can be made into packaging containers of different shapes (such as bottles, boxes) through various processing methods like blow molding and injection molding; PVDC can be compounded with PET through coating, co - extrusion, etc., to form a uniform barrier layer. Moreover, this composite material is suitable for printing, and information such as drug names, instructions for use, and expiration dates can be clearly printed on the packaging surface.

Common Forms

1) PET Bottles with PVDC Coating: Commonly used for the packaging of liquid drugs (such as oral liquids, eye drops) or solid drugs (such as capsules, tablets). A PVDC coating is applied to the inner or outer surface of the PET bottle to enhance the barrier performance of the bottle, preventing drugs from contacting the external environment, while retaining the advantages of PET bottles such as transparency, aesthetics, and good mechanical properties.

2) PET/PVDC Composite Films: They can be made into blister packaging, bag - shaped packaging, etc. Blister packaging is often used for the single - dose packaging of tablets, capsules, etc. PET provides support and forming ability, and PVDC ensures high barrier performance; bag - shaped packaging is suitable for multi - dose packaging of drugs, such as Chinese medicine formula granules, bulk tablets.

Regular size:

Coating amount:40g,60g,90g,120g,180g,etc.

Application Scenarios

1) Oxygen - Sensitive Drugs: Such as vitamin - based drugs (such as vitamin C tablets). The PET/PVDC packaging can effectively isolate oxygen, preventing vitamins from oxidizing and deteriorating, and ensuring that their nutritional components are not lost; also, some biological agents, enzyme - based drugs, etc., need a strict oxygen - isolation environment to maintain drug activity, and this packaging material can meet the requirements.

2)Moisture - Absorbing Drugs: Like some Chinese medicine extracts, powders, etc., which are prone to absorbing moisture and caking in a humid environment, affecting drug quality and efficacy. The low water vapor transmission rate of the PET/PVDC packaging can maintain a dry environment inside the packaging, ensuring the stable quality of drugs within the expiration date.

3) Drugs with Special Odors or Volatility: For example, some Chinese medicine preparations containing volatile oil components. The strong barrier performance of PVDC can prevent the odor emission of drugs and the loss of volatile oil, maintaining the original efficacy and odor of drugs.