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Polythene Bags

KB Packaging offers a variety of high-quality, great-value clear polythene bags (poly bags) that are suitable for a wide range of uses. All our clear bags are food-safe, heat sealable, reusable and 100% recyclable

We stock a wide range of clear polythene bags in 3 different thickness categories ranging from light-duty (22-30 micron), to medium-duty (46-58 micron) up to heavy-duty (100-117 micron).

If you can’t find the size of polythene bag that you require please contact KB Packaging on 0115 944 1600 as bespoke sizes and printing options are also available.

Polythene Bags – Recyclable, Durable & Versatile Packaging Solutions

Our polythene bags offer a strong, reliable, and cost-effective solution for packaging, storage, and protection across a wide range of industries. Manufactured from LDPE (Low-Density Polyethylene), these bags combine clarity, flexibility, and durability — perfect for everything from industrial packing and retail use to food-grade applications.

All of our polythene bags are 100% recyclable, helping you reduce waste and support more sustainable packaging choices.


Are Polythene Bags Recyclable?

Yes — LDPE polythene bags are fully recyclable and can be reprocessed multiple times without losing performance. By recycling your used polythene bags, you help reduce landfill waste and contribute to a circular, more environmentally friendly packaging system.

At KB Packaging, we’re committed to sustainability, which is why all our bags are made from recyclable materials.


Do Polythene Bags Contain Recycled Plastic?

There are several grades of polythene bags available:

  • Clear polythene bags used in manufacturing, bagging, and packing are usually made from virgin film for maximum clarity.

  • Food-grade polythene bags are typically made from 100% virgin material to avoid contamination — though we now supply food-grade bags with up to 30% recycled content. This recycled material is carefully processed during manufacturing to remain clean and suitable for food use.

  • Black refuse sacks and bin liners are commonly made from recycled polymers, providing a sustainable and cost-effective waste solution.

While non-food-grade clear bags can contain recycled content, slight discolouration makes them less popular for presentation purposes.


Are Polythene Bags Biodegradable?

Traditional polythene isn’t classed as biodegradable, as it takes a long time to break down naturally. Some additives can make polythene degrade faster (called oxo-degradable), but this process leaves microplastics, which are not environmentally friendly.

The best sustainable choice is to reuse or recycle your polythene bags — they can be reprocessed many times without compromising quality.


How to Seal a Polythene Bag

Depending on your application, there are a few effective ways to seal polythene bags:

  • Tape – Quick and simple for light-duty packaging.

  • Staples – Ideal for bundling or closing bags securely.

  • Heat Sealer – The most professional method, creating a tight, tamper-proof, and air-sealed closure.

For the most secure finish, we recommend using a heat sealer to bond the film layers together — perfect for protecting contents during storage or transport.


Why Choose KB Packaging for Polythene Bags?

With over 38 years of experience in the packaging industry, KB Packaging supplies high-quality LDPE polythene bags in a range of sizes and thicknesses. Whether you need clear, food-grade, or heavy-duty polythene bags, our team can recommend the ideal product for your business.

We combine speed, efficiency, and sustainability to ensure you always get the right packaging, on time and at competitive prices.

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