Types of Moisture-Proof Packaging for Sensitive Products

 Moisture is one of the leading causes of degradation for a variety of products, particularly in the pharmaceutical and diagnostics industries. Whether it's effervescent tablets, test strips, or desiccant bottles, effective moisture-proof packaging plays a crucial role in maintaining product integrity, extending shelf life, and ensuring accurate results. Let's dive into the specific packaging solutions designed to protect these sensitive products from humidity.

effervescent tablet packaging

1. Effervescent Tablet Packaging

Effervescent tablets, which dissolve in water to deliver active ingredients quickly, are extremely sensitive to moisture. Exposure to humidity can cause them to degrade, fizz prematurely, or lose their potency. Therefore, moisture-proof packaging is essential.

Desiccant Tube Packaging: Rigid plastic tubes, typically made of HDPE (High-Density Polyethylene) or PP (Polypropylene), with integrated desiccant stoppers or caps. These desiccants absorb moisture each time the cap is removed, ensuring the tablets remain dry.

glucose test strip container

2. Test Strip Packaging

Test strips, including those for glucose, pregnancy tests, and water quality tests, are highly sensitive to moisture. If exposed to humidity, they can lose their functionality or give false results. Therefore, packaging needs to effectively shield these strips from moisture and environmental factors.

Desiccant-Lined Vials: Multi-strip packs often come in rigid plastic vials or bottles with desiccant material built into the cap or walls. These vials ensure the test strips remain dry throughout their shelf life.

Why It Works: Individual sealing and desiccant integration prevent moisture from compromising the strips' chemicals, ensuring that the test results remain accurate and reliable.

desiccant bottle with silica gel

3. Desiccant Bottles

Desiccant bottles are commonly used for packaging moisture-sensitive pills, capsules, and other pharmaceutical products that need long-term protection from humidity. These bottles are designed to absorb moisture and maintain a dry environment inside the container, ensuring the product’s efficacy.

Common Packaging Solutions:

Desiccant-Integrated Caps: These bottles feature caps with integrated desiccant liners, such as silica gel or molecular sieves, that absorb moisture as the bottle is opened. This ensures that the product stays dry even when the container is frequently opened.

Child-Resistant and Tamper-Evident Features: For pharmaceuticals, desiccant bottles often include child-resistant closures and tamper-evident seals for safety and compliance.

Why It Works: Desiccant bottles effectively control humidity levels inside the container, ensuring that the product remains in ideal conditions, preserving its quality and potency.

Moisture-proof performance of effervescent tube

 The moisture-proof performance of the effervescent tube is mainly reflected in the following aspects:

Desiccant on the lid: A desiccant is usually placed on the lid. This desiccant is generally made of silica gel and molecular sieves mixed in equal proportions. Silica gel can effectively control the number of water molecules in the long term, while molecular sieves can quickly absorb water molecules in a short period of time. This design can effectively absorb internal moisture and prevent effervescent tablets from deteriorating due to moisture.

caps for effervescent tube

Barrier properties of the tube material: The material of the effervescent tube body is usually made of polypropylene. This raw material itself has good barrier properties and can effectively block the intrusion of external water molecules, thereby further protecting the internal effervescence. film to improve its moisture-proof performance.

effervescent tablet packaging

Dryness of cardboard seal: The desiccant compartment in the lid is generally sealed with white cardboard, which is beneficial to maintaining the moisture-proof performance of the desiccant. If the cardboard is too thick, it may increase the barrier effect on the desiccant, thus affecting its moisture-proof performance. If the moisture content of the cardboard is too high, the desiccant will apply more moisture absorption properties to the cardboard, reducing the overall moisture resistance of the internal environment of the packaging.

In general, the moisture-proof performance of the effervescent tube is mainly achieved through the desiccant on the cover and the barrier properties of the tube material. In actual use, we also need to pay attention to the overall sealing of the packaging to prevent the effervescent tablets from getting damp and deteriorating.

Importance of Paxlovid moisture-proof packaging

 Drug moisture-proof packaging refers to the packaging with special moisture-proof function, which is mainly used for drugs that are very sensitive to water molecules. With the launch of new crown treatment drugs such as Pfizer's Paxlovid (Paxlovid) and Merck's Molnupiravir (Monupavir), the dawn of the new crown epidemic that has swept the world will appear. So, what important role will moisture-proof packaging play in pharmaceuticals?

50ml pharma desiccant bottle

At present, the new crown treatment drugs that have been marketed are mainly oral small-molecule drugs. The structure of small-molecule drugs has good spatial dispersion, and their chemical properties determine their good drug-forming properties and pharmacokinetic properties. These characteristics make small molecule drugs show great advantages in the drug development process and other drug fields, and the development of small molecule drugs is increasingly favored by the market. On the other hand, the dosage forms of these drugs are mostly tablets or capsules, which require very high moisture resistance of the packaging.

child proof bottle

Tablets and capsules are very easy to absorb water molecules, causing deliquescence, adhesion, etc., affecting the therapeutic effect of drugs, and even endangering the health and safety of patients. Therefore, when choosing packaging, moisture-proof function is an element that pharmaceutical companies focus on. Drug moisture-proof packaging is a package with a desiccant. The desiccant can absorb the water molecules inside the package and maintain the stability of the drug within the validity period. It has become the main packaging form of tablets and capsules.

Preventing drugs from getting wet is the basic function of drug moisture-proof packaging. With the continuous improvement of packaging design and production technology, this kind of packaging has gradually equipped with child-proof and anti-theft functions, providing more security for drugs.

Desiccant packaging prevent moisture entering bottle

There are six sources of effervescent tablet packaging containers. First, the body and the cap material have a certain amount of water, and secondly, the water in the medicine and the desiccant packaging material is evaporated during the production process and storage, and third, the moisture contained in the drug itself; fourth, the packaging material of the packaged product itself contains moisture, released during storage. Fifth, the moisture contained in the air in the packaging bag after the packaging container is sealed. Sixth, after sealing, the water molecules in the outside atmosphere penetrate into the product during transportation and storage.

desiccant packaging

Desiccant

The desiccant physically adsorbs water molecules in its own structure, or chemically absorbs water molecules and changes its chemical structure to become another substance. Affect the number of water molecules in the effervescent bottle:

First, the size of the packaging container (dry space), the humidity requirements of the packaged product (ie, the relative humidity of the predetermined control)

Second,the water content of the product itself

Third,the properties of the packaging materials used in the product (especially moisture permeability)

desiccant cap

Fourth, the degree of sealing of the product packaging,

Fifth, the temperature and humidity of the environment when the product is packaged, the shelf life of the product, the environment and climatic conditions for product transportation and storage, etc.

Which packaging rosuvastatin calcium tablets need

The rosuvastatin calcium tablet packaging protects the drug from the deterioration of the product and provides basic information about the product. In the storage of medicines, attention should also be paid to conditions such as water vapor and light heat to prevent the effects of drugs from being affected by moisture deterioration.

moisture proof packaging

Rosuvastatin calcium tablets for primary hypercholesterolemia (Type IIa, including heterozygous familial hyperplasia) for dietary control and other non-pharmacological treatments (eg, exercise therapy, weight loss) Cholesterolemia) or mixed dyslipidemia (type IIb). This product is also suitable for patients with homozygous familial hypercholesterolemia as an adjunct to dietary control and other lipid-lowering measures (such as LDL removal therapy) or when these methods are not applicable.

transparent bottle with desiccant cap

Plastic tube is generally used in the packaging of effervescent tablets and products need dry environment to protect against moisture and damage. When effervescent tablets are packaged early, they pay most attention to the sealing dryness of the package. Another design for the effervescent bottle is the spring with a spiral on the platform to prevent effervescence from being damaged during transport.

bottle with desiccant lid

The medical moisture-proof bottle is composed of a low-density polyethylene (LDPE) bottle cap skeleton, a desiccant, and a cardboard. Desiccant is used for moisture and mildew of medicines and foods. The commonly used desiccant can be divided into a physical adsorption desiccant and a chemical adsorption desiccant, and the silica gel desiccant in the physical adsorption desiccant meets the US FDA standard and is verified to be harmless to the human body. Silica gel desiccants physically adsorb water molecules in their structures.