Recyclable Polypropylene (OPP) Block Bottom Bags (also known as Cello Bags) are a popular packaging option used for dry goods, snacks, and other retail products. Below is a clear overview:

What Are They?

These bags are made from Oriented Polypropylene (OPP), a type of plastic valued for its clarity, durability, and moisture resistance. The block bottom design allows the bag to stand upright on shelves, enhancing product display and providing greater stability. They may also feature side gussets for added volume.

1. Recyclability
   OPP is recyclable, especially when the bag is made from mono-material (just polypropylene, without additional plastic layers).

2. Good Barrier Properties
   OPP offers protection against moisture, oxygen, and odours, making it suitable for food and other sensitive items. Additional coatings or barrier layers can be applied if needed, as long as they do not compromise recyclability.

3. High Clarity
   The transparency of OPP helps showcase the contents of the bag, which is especially beneficial for food and retail packaging.

4. Lightweight and Strong
   These bags reduce shipping weight while still offering good durability and resistance to punctures.

5. Customisable
   OPP bags can be printed with high-quality designs using flexographic or rotogravure printing techniques.

Sustainability Considerations

Mono-material Construction: To maximise recyclability, the bag should be made entirely of OPP, without mixed layers like PET or PE.

Components Like Zippers or Valves: Add-ons such as zippers or valves may interfere with recyclability if they’re made from different materials.

Recycling Access: Recycling options for flexible polypropylene vary by region. Some areas accept these bags through curbside programs, while others require store drop-off or special collection.

Common Uses

• Coffee, tea, and dry foods
• Snacks and confectionery
• Pet treats and small consumer goods
• Specialty retail items such as soaps or bath salts

Whether you're a retailer, small business, or hobbyist, these clear, gusseted cello bags help your products shine while keeping sustainability in mind.