Buyer guide · Materials
How should plastic e-commerce bag material be selected?
Specify resin or film build-up, thickness, opacity, sealing, tear resistance, adhesive closure and any recycled-content evidence for the delivery route.
Submit project requirements
Checklist
Material facts to request and approve
- Material specification
- Weight and caliper
- Adhesive compatibility
- Claim evidence
- Target quantity and SKU allocation
- Approval sample and decision owner
- Required date and Mainland China delivery point
- Change and repeat-order record
Material evaluation
Four checks before approving the material
Material specification
Name the grade, composition, colour, surface and approved equivalent; a generic material name is rarely enough for repeat production.
Weight and caliper
Check both basis weight and measured thickness because papers with the same gsm can differ in bulk, stiffness and converting behaviour.
Adhesive compatibility
Match adhesive to surface energy, coating, temperature, load and ageing; initial tack alone does not prove long-term performance.
Claim evidence
Tie recycled, biodegradable, compostable or reduced-plastic statements to a defined product, method and supporting document.
Execution method
Four actions from RFQ to production
Define the application
Start from protection, forming, print, appearance and distribution needs.
Compare physical samples
Review representative material under agreed lighting and handling conditions.
Run process trials
Test printing, creasing, gluing, finishing and packing on the proposed build-up.
Freeze an approved specification
Record supplier, grade, weight, thickness, colour and permitted substitution rules.
FAQ
Questions buyers often ask
How should plastic e-commerce bag material be selected?
Specify resin or film build-up, thickness, opacity, sealing, tear resistance, adhesive closure and any recycled-content evidence for the delivery route.
What should be written in the specification?
At minimum, define Material specification, Weight and caliper, Adhesive compatibility, Claim evidence, then link quantity, sample, timing, inspection and the approved revision.
Is a physical sample needed?
A decision involving structure, material, colour, finish, assembly or use performance normally needs a physical sample matched to that question; a screen proof cannot approve everything.
Can the previous standard be reused for a repeat order?
Reuse a controlled standard only when files, material, structure, supply chain and use conditions remain unchanged. Record every change and decide whether resampling or reapproval is required.
Continue building the procurement specification