Knowledge

Bio-based and biodegradable describe two different properties of a material. Bio-based refers to the origin of its raw materials, while biodegradable refers to its ability to be broken down by microorganisms under specified conditions.

Compare conventional and PCR plastic by material origin, performance, cost, food-contact safety, and sustainability. Learn how to select the right packaging material.

Are Compostable Bags as Strong as PE Bags?In many applications, yes. Compostable films can be formulated to provide the tensile strength, flexibility, tear resistance and load capacity required for specific bag applications.

Can you compost vegetable bags? Learn when compostable produce bags can be composted, why certification is not enough, and what to check before disposal.

If you are sourcing biodegradable or sustainable plastic bags, you may come across terms such as oxo-degradable, oxo-biodegradable, biodegradable, compostable, bio-based, and bioplastic. These terms are not interchangeable.

A common question from buyers sourcing compostable bags is: “If a bag is compostable, will it start breaking down during international shipping or while sitting on a warehouse or retail shelf?”

For B2B buyers, choosing the right compostable zip lock bag therefore starts with the application. The intended use determines the required film properties, material formulation, thickness, zipper performance and applicable certification.

The key is not simply choosing a biodegradable raw material. It is developing a formulation that provides the right balance of processing behavior and finished-product performance for a specific application.

The challenge is balancing grease resistance, food safety compliance, compostability, recyclability, and cost efficiency. This is why PFAS‑free packaging is no longer just about materials — it is becoming a technical and regulatory capability.