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The Most Popular Plastic Sheets Used for Blister Packaging

Views: 3     Author: Site Editor     Publish Time: 2023-05-04      Origin: Site

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1. What is blister packaging?


Blister packaging is a type of packaging that uses a plastic sheet to create a sealed container around a product. The plastic sheet is thermoformed to fit the shape of the product and is then sealed to a printed backing card using heat and pressure. Blister packaging is commonly used for small consumer products such as medicine, batteries, and electronic components.


2. How does blister packaging work?


Blister packaging works by creating a sealed container around the product that provides protection and visibility. The plastic sheet is first heated until it becomes pliable and can be formed around the product. Once the plastic sheet has been formed to the desired shape, it is cooled and then sealed to a printed backing card using heat and pressure. The backing card provides a surface for printing product information and branding.


3. Types of plastic sheets used in blister packaging


There are several types of plastic sheets used in blister packaging, each with its own advantages and disadvantages. The most commonly used types are:


I. PVC (Polyvinyl Chloride)


PVC is a commonly used plastic in blister packaging due to its low cost and high clarity. PVC Plastic Sheets can be easily thermoformed and is compatible with a wide range of printing methods. However, PVC is not environmentally friendly and can release toxic fumes when incinerated.


II. PET (Polyethylene Terephthalate)


PET is a clear and durable plastic that is commonly used in food packaging and blister packaging. PET Plastic Sheet is recyclable and can be easily thermoformed. However, PET is more expensive than PVC and is not as flexible.


III. PP (Polypropylene)


PP is a versatile plastic that is used in a wide range of applications including packaging and textiles. PP is durable, lightweight, and resistant to moisture. However, PP is not as clear as other plastics and can yellow over time.


IV. PS (Polystyrene)


PS is a lightweight and clear plastic that is commonly used in food packaging and consumer goods. PS is easy to thermoform and is compatible with a wide range of printing methods. However, PS is not as durable as other plastics and can crack or break easily.


V. PLA (Polylactic Acid)


PLA is a biodegradable plastic made from renewable resources such as corn starch or sugarcane. PLA is becoming more popular in blister packaging due to its environmental friendliness. However, PLA is not as durable as other plastics and can become brittle over time.


4. Advantages of using plastic sheets for blister packaging


Plastic sheets are a popular choice for blister packaging due to their versatility and cost-effectiveness. Some of the advantages of using plastic sheets for blister packaging include:

  1. Protection: Plastic sheets provide a barrier that protects the product from external elements such as dust, moisture, and oxygen.

  2. Visibility: Blister packaging allows the product to be clearly visible to the consumer, which can increase sales.

  3. Customization: Plastic sheets can be easily printed with product information, branding, and other marketing messages.

  4. Versatility: There are many types of plastic sheets available for blister packaging, each with its own unique properties and advantages.

  5. Cost-effective: Plastic sheets are relatively inexpensive compared to other types of packaging materials.


5. Disadvantages of using plastic sheets for blister packaging


While plastic sheets offer many advantages for blister packaging, there are also some disadvantages to consider. Some of the disadvantages of using plastic sheets for blister packaging include:

  1. Environmental concerns: Plastic sheets are not biodegradable and can contribute to environmental pollution.

  2. Limited protection: While plastic sheets provide some protection, they may not be suitable for products that require a high level of protection.

  3. Limited flexibility: Some types of plastic sheets may not be suitable for products with irregular shapes or sizes.

  4. Limited recycling options: While some types of plastic sheets can be recycled, not all recycling facilities accept them.


6. Environmental concerns


One of the main concerns with plastic sheets used for blister packaging is their impact on the environment. Plastic sheets are not biodegradable and can take hundreds of years to decompose. When plastic sheets are not disposed of properly, they can end up in landfills or the ocean, where they can harm wildlife and pollute the environment.


7. Recycling of plastic blister packaging


While plastic sheets used in blister packaging are not biodegradable, they can be recycled. However, not all recycling facilities accept plastic sheets, and the recycling process can be more complex than other types of packaging materials. Consumers should check with their local recycling facility to determine if plastic blister packaging is accepted and how it should be prepared for recycling.


8. Alternatives to plastic blister packaging


While plastic sheets are commonly used in blister packaging, there are also alternatives available. Some of the alternatives to plastic blister packaging include:

  1. Paperboard: Paperboard is a recyclable and biodegradable material that can be used for blister packaging.

  2. Biodegradable plastics: Biodegradable plastics, such as PLA, are becoming more popular for blister packaging due to their environmental friendliness.

  3. Glass: Glass is a durable and recyclable material that can be used for blister packaging.

  4. Metal: Metal, such as aluminum, can be used for blister packaging and is recyclable.


9. Conclusion


Plastic sheets are a popular choice for blister packaging due to their versatility and cost-effectiveness. However, there are also environmental concerns associated with their use. Consumers and manufacturers should consider alternative packaging materials, such as biodegradable plastics, paperboard, glass, and metal, to reduce the impact of packaging on the environment.


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