Tea-bag manufacturers face a fundamental raw-material decision: CTC (Crush–Tear–Curl) or orthodox black tea. The answer shapes your infusion speed, cup profile, dosing weight and — significantly — your cost per bag. Here is a practical comparison from a factory that supplies both.
The Processing Difference
Orthodox tea is rolled whole: leaves keep their twisted, wiry shape and release flavor gradually. CTC tea is passed through rotovane rollers that crush, tear and curl the leaf into small, hard granules — massive cell-wall rupture, fast and complete extraction.
Why Tea-Bag Lines Prefer CTC
- Fast, uniform infusion — a standard 2-minute bag brew reaches full strength; orthodox needs longer.
- Consistent dosing — granules flow and weigh uniformly in high-speed filling machines.
- Higher extraction yield — CTC water extract typically ≥ 36%, meaning more cup strength per gram of tea.
- Lower cost per cup — critical for volume retail and HoReCa programs.
When Orthodox Wins
Premium pyramid bags, single-estate programs and whole-leaf green/white bag lines favor orthodox: the visible whole leaf reads as quality, and slow infusion suits consumers who steep longer. Many brands run a hybrid range: orthodox for the premium line, CTC for the volume line.
Knowing the CTC Grade Alphabet: BP, BOP, FBOP, Fannings
- BP (Broken Pekoe) — the workhorse for standard tea bags. CTC BP specification →
- BOP (Broken Orange Pekoe) — adds golden tip, more aromatic cup for premium bags. CTC BOP specification →
- FBOP — highest tip ratio, high-grade bags.
- Fannings / Dust — fine particles for low-cost bags and iced-tea extraction.
Quality Parameters to Demand
For CTC tea-bag material, contract on: moisture ≤ 7.0%, total ash ≤ 7.0%, water extract ≥ 36%, uniform granule size (sieve distribution), and per-lot COA with EU MRL pesticide residue testing. Brightness of liquor after milk is the classic QC test for bag blends.
Bottom Line
For volume tea bags — hot brew, milk tea or iced tea — CTC BP or BOP is the rational choice. For premium visible-leaf programs, use orthodox or hybrid. Buying for iced-tea and milk-tea chains in Southeast Asia? See our Philippines market page → Free comparison samples (BP vs BOP, 200 g each) are available from Smileaf Tea, Xiamen, China.