Bring Your Own Blend: Toll Packing on a Tea Bag Line

Some brands come to a packer with a recipe and ask for everything: sourcing, blending, bagging, boxing. Others arrive with the blend already made — a signature herbal mix, a black tea from a trusted estate, a fruit infusion that took a year to get right. For that second group the service is toll packing, and it runs on different rules from a full-service order.

What toll packing means when the blend is yours

Toll packing, sometimes shortened to tolling, means the packer converts material the brand owns for a conversion fee and never takes title to it. You deliver the finished blend; the line doses it into string-and-tag tea bags, wraps each bag in an envelope and packs it into your retail carton or bulk case. The packer answers for handling, machine performance, hygiene and packaging conformity; the composition, origin and legal compliance of the blend remain yours.

That split of responsibility is the heart of the arrangement and deserves to be written down rather than assumed: who is liable for the material's quality, who insures it while it sits in the packer's warehouse, and who signs off the packaging specification and the printed claims on the envelope.

Receiving your material: what gets checked at the dock

Because the packer did not buy the blend, incoming inspection is the moment where accountability changes hands. A well-run line will not tip a sack into the hopper without a short check:

• Documentation — delivery note matched to the order, your lot number, and whatever specification or CoA you hold on the blend. Allergen and pest-control statements should travel ahead of the goods.
• Condition — intact packaging, no odour taint, no signs of moisture ingress or infestation.
• Moisture — damp material clumps, doses unevenly and shortens shelf life, so a quick moisture check on receipt is common practice.
• Foreign matter and cut size — a visual or sieve check for stalks, stones or string, plus a look at particle size, since a bagging machine doses reliably only when the cut sits inside the range it is set up for.

Anything outside expectations is flagged back to you before the run starts; holding a pallet for a day is far cheaper than stopping a line mid-shift.

Retained samples and why both parties keep them

Retained samples are the quiet insurance policy of toll packing. Three are normally kept:

If a complaint lands months after dispatch, both sides can compare like with like. Keep your own sealed sample of the blend as it left your warehouse, too — it is the only way to separate a blend problem from a packing problem.

Sizing a run when the material is finite

Toll packing rarely involves an open-ended supply, so run size deserves honest thought. Changeover on a bagging line — threading tag stock, loading the envelope reel, setting the dose weight — costs roughly the same whether the run is short or long. On a machine producing around 1,000 bags per hour, a small run finishes quickly, but setup then dominates the job. Practical minimums are therefore set at quotation, based on bag weight, envelope format and packaging, rather than published as one number.

Two habits make small runs go smoothly: ship blend with a margin, because calibration and the first bags consume material, and have every printed component — envelope, tag, carton — approved and delivered before the blend arrives, so the material is never waiting on artwork.

Traceability from your lot to the finished envelope

Traceability in a tolling job is a chain of references: your blend lot is tied to the packer's receipt number, then to a production order, then to the finished lot code printed on the envelope or carton. Filter paper, string, tags and envelope reels carry their own lot references, and a sound record ties all of them to the same production order — which is what a food safety system built on HACCP principles and ISO 22000 asks for, and what makes a mock recall possible. Ask to see the packer's traceability record format before committing material; from one finished lot code, both parties should be able to name the blend lot and every packaging lot within hours.

What happens to surplus, rejects and unused packaging

Every run ends with something left over, and the tidiest arrangements decide its fate in advance. Surplus blend is weighed, resealed and labelled with your lot reference, then returned, held for the next run or disposed of as agreed. Start-up bags and rejects — out-of-tolerance weights, torn envelopes — are usually not resold, though the loose material can go back to you. Printed envelopes, tags and cartons carrying your artwork are yours and travel with the goods.

The document that closes the loop is a reconciliation sheet: material weighed in, bags produced, rejects and surplus weighed out. Once that balances, the run is finished in every sense. TeraVella runs this kind of contract tea bag production for brands bringing their own blend to Antalya, with the packing specification and run size confirmed at quotation.