Non-Woven Bag Raw Materials: A Buyer’s Guide
Many non-woven carry bags use spun-bond polypropylene (PP) fabric. PP is a thermoplastic plastic material; “non-woven” describes how the fabric web is formed and bonded rather than woven or knitted.
Polypropylene Resin
The base polymer grade and supplier specification can affect processing and finished fabric. Buyers should request the material description for the exact bag rather than assuming all PP non-woven fabric is identical.
Spun-Bond Fabric
In a typical spun-bond process, polymer is melted, formed into filaments, laid into a web, and bonded. The finished fabric specification may include nominal GSM, colour, width, and tolerances.
Colourants and Additives
Pigments, masterbatch, fillers, coatings, laminations, inks, and other additives can change appearance, processing, claims, and end-of-life options. Ask which materials are present in the finished product.
Finished-Bag Construction
Bag performance depends on more than raw material:
- Finished width, height, gusset, and tolerances
- Fabric GSM and layer construction
- Seams, seals, stitching, and reinforcement
- Handle opening or attachment
- Printing, lamination, closures, and packing
Sample and Testing
GSM is not a standalone load, tear, or service-life rating. Approve a finished sample and test it with the intended contents and handling conditions.
Reuse and End-of-Life
Actual reuse depends on construction, contents, handling, care, and condition. PP recycling depends on a local collection and processing route that accepts the finished bag. PP is not inherently biodegradable.
Supplier Claims
Verify recycled content, certification, regulatory, factory, manufacturing, and environmental claims in current product or company records. This article does not state that every production step is performed by Thailiwale.
Ordering Checklist
Confirm material, GSM, dimensions, construction, printing, sample, quantity, acceptance criteria, price, documentation, production estimate, and delivery for the exact order.