Blister card

Blister card packaging is a type of pre-formed plastic packaging used for small consumer goods, foods, and for pharmaceuticals. The primary component of a blister card is a cavity or pocket made from a formable web, usually a thermoformed plastic. This usually has a backing of paperboard or a lamination of aluminum foil or plastic. A blister that folds onto itself is often called a clamshell.

Overview

Blister cards are used to package products such as toys, hardware, medication, etc. The purpose of blister packaging is to protect products against external factors, such as humidity and contamination for extended periods of time. Opaque blisters also protect light-sensitive products against UV rays.

The process of creating blister cards involves several steps. First, the plastic is heated and then formed into its desired shape by a process called thermoforming. Once the plastic cools and solidifies, it is filled with the product. Finally, the backing material is applied and sealed to complete the packaging process.

Types of Blister Packaging

There are several types of blister packaging, each serving different packaging needs:

• Standard Blister Pack: This is the most common type, where the product is placed in a pre-formed plastic blister and a backing card provides product information and a surface for branding.
• Clamshell: A clamshell is a blister that folds onto itself and is often used for heavier items.
• Slide Blister: Unlike the standard blister pack, a slide blister allows the product to slide out, and it typically does not require any tools to open.
• Carded Blister: A specific type of blister packaging where the product is placed between a specially made paperboard card and clear pre-formed plastic such as PVC.

Advantages and Disadvantages

Blister cards offer several advantages, including:

• Protection from external elements
• Cost-effectiveness in production
• Visibility of the product while maintaining security

However, there are also disadvantages:

• Difficulty in opening can be a frustration for consumers
• Limited space for branding on the blister itself
• Environmental concerns due to the use of plastic

Applications in Pharmaceuticals

In the pharmaceutical industry, blister cards are extensively used to package medications, allowing for dose-specific packaging and extended shelf life. They are particularly useful for tablets and capsules, providing a barrier against moisture and contaminants. Blister packaging in this sector often includes additional features for compliance, such as day-of-the-week labels, to assist patients in managing their medication.

Environmental Impact

The environmental impact of blister cards is a growing concern. While they offer significant advantages in terms of product protection and shelf life, the use of plastics and the challenges associated with recycling these materials have led to increased scrutiny. Efforts are being made to develop more sustainable materials and recycling processes to mitigate these environmental impacts.

Conclusion

Blister cards are a versatile and efficient form of packaging that serves a wide range of industries. Despite their advantages, the environmental impact of using such packaging solutions is prompting the search for more sustainable alternatives.

Blister card Resources
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