PET Resin IV Explained: How Bottle and Sheet Buyers Choose the Right Grade
Understand PET resin IV before you buy. Learn what intrinsic viscosity means, which documents to request, and how bottle and sheet buyers can avoid a wrong-grade order.
PET Resin IV Explained: How Bottle and Sheet Buyers Choose the Right Grade
What does PET resin IV mean?
Start with the final product, not the number
- What will the resin become: water bottle, beverage bottle, food container, sheet, strapping, film or fibre?
- What process will be used: preform injection, injection stretch blow molding, sheet extrusion, thermoforming or another route?
- Which finished-product checks matter most: clarity, color, top load, thickness distribution, taste, sealing, recycled-content strategy or production speed?
- Which destination-market documents are required?
- What are the expected order quantity, packaging preference and delivery point?
A real example: what a 0.80 IV bottle grade description tells you
Why acetaldehyde deserves a place in the discussion
The document set to request before a PET trial
- the current TDS for the proposed grade;
- a representative COA and an explanation of how the final lot COA will be supplied;
- SDS/MSDS and any destination-market compliance documentation required for the application;
- manufacturing origin and grade identification;
- packaging size, palletization and moisture-protection details;
- usual MOQ, lead-time basis and available Incoterms;
- the supplier’s current drying and processing guidance.
Bottle, sheet and strapping: do not use one approval route for all three
Bottle and preform projects
Sheet and thermoforming projects
Strapping and other industrial applications
Drying is part of material selection
Four mistakes that cause avoidable PET buying problems
1. Ordering by IV only
2. Using an old data sheet to approve a new lot
3. Ignoring the destination market until after shipment
4. Treating drying as a supplier-only responsibility
A better PET enquiry template
Buy a grade that matches the job
FAQ
Is 0.80 IV PET resin suitable for every bottle project?
What should I request with a PET resin quotation?
Is PET IV enough to choose a resin grade?
Sources
- Wankai WK-801 PET Resin | 0.80 IV Water Bottle Grade