How to Source Stretch Film from China

Quick answer

Source stretch film from China by locking load type, wrap method (hand or machine), film gauge/pre-stretch class, cling side, and a retention or puncture test—not by buying the cheapest micron claim. Comparable RFQs need core size, roll length, resin family, and whether recycled content is allowed.

What stretch film is for

Stretch film (stretch wrap) unitizes pallet loads so cartons stay square in warehouse handling and ocean transit. Most commercial film is LLDPE-based, cast or blown, with one-sided or two-sided cling. It is not the same as shrink film, which needs heat tunnels. Mixing the two in an RFQ sends buyers to the wrong factories.

Hand roll vs machine film

Hand rolls prioritize grip comfort, lower pre-stretch, and easy tear. Machine film is designed for powered wrappers with higher pre-stretch ratios and tighter gauge control. Do not compare a hand-roll quote to a machine-film quote on price alone—the resin recipe, thickness profile, and roll geometry differ. State wrapper brand/model if you already run equipment.

Gauge, yield, and the micron trap

Buyers often chase the lowest micron. What matters is containment force after your real wrap pattern. A thinner high-performance film with correct pre-stretch can outperform a thicker commodity roll that necks unevenly. Ask for yield (m²/kg), thickness tolerance, and whether thickness is nominal or measured. Require lot certificates when film is critical to export claims.

Cling, clarity, and quiet unwind

One-sided cling helps avoid pallets sticking together in tight storage. Two-sided cling can improve bond between layers on unstable loads. Clarity matters for barcode scanning and inspection. Quiet cast films reduce warehouse noise. Specify UV or outdoor exposure only if loads sit in yards—standard indoor film is usually enough for containerized export.

Load retention tests buyers should require

Define product stack (weight, height, carton type), wrap pattern (turns, top/bottom coverage), and a simple retention check: tilt, short transport vibration, or warehouse forklift route. For export, note humidity and whether corner boards or slip sheets are used under the wrap. Film failures often come from pattern and under-wrap, not only film grade.

Recycled content and sustainability claims

Post-industrial or post-consumer content is available, but clarity, tear, and odor can change. If you need a recycled claim on customer packaging docs, require documented percentage and whether it is PIR or PCR. Do not accept “eco stretch” marketing without a measurable spec.

RFQ field list

Hand or machine; wrapper model if known

Roll width, core ID, roll length/weight

Target gauge class and pre-stretch expectation

Cling type; clarity preference; color (clear/tinted)

Annual volume and pallet ladder; destination climate

Recycled content rule; sample policy; Incoterms

MOQ, packing, and common mistakes

Export packing should protect cores from crush and moisture. Confirm carton/pallet counts and whether rolls are sleeved. Common mistakes: comparing microns without wrap method; ignoring core quality; approving samples on a different wrapper; and switching suppliers mid-season without re-validating containment.

Related PackTrades Knowledge

Industrial Protective Packaging Overview, Edge Board Buying Guide, Dunnage Air Bags Buying Guide, How to Source Packaging Materials from China, How to Request Packaging Samples from China Factories.