Things You Need to Know When Setting Up a Tomato Paste Production Line

Investing in a tomato paste production line is a high value-added and export-oriented facility when planned correctly. When planned incorrectly, it means idle capacity and loss of efficiency. This guide summarizes the topics you need to clarify before making a decision.

1. Calculate capacity backward from raw materials

Capacity in the paste line is defined as "fresh tomatoes processed per day" (e.g., 6–50 tons/day). The actual limit of the line is the daily amount of tomatoes you can reliably procure in your region during the season. Approximately 1 kg of 28–30 brix paste is obtained from 6 kg of tomatoes; reverse this ratio to find your target finished product amount.

2. Brix target determines equipment

28–30 brix: standard double concentrate; single/double effect evaporator may suffice.
36–38 brix: triple concentrate; requires larger evaporation capacity and energy plan.

The brix value desired by your target market directly affects the choice of evaporator and steam requirements.

3. Hot break or cold break?

Hot break (85–95 °C) provides higher viscosity and red color; preferred for sales in the ketchup and sauce industry. Cold break (60–65 °C) provides higher yield. If your target customer is industrial, this decision affects your selling price.

4. Main equipment items

Washing and sorting conveyors
Crusher (hot/cold break) and pulper/finisher
Vacuum evaporator (the heart of the line)
Pasteurizer and aseptic/can filling
CIP cleaning system and automation panel

5. Clarify facility needs early

Closed area, steam boiler capacity, process water, electrical power, and wastewater plan should be roughly known BEFORE the offer stage. Every price given without this information is an estimate.

Example capacity calculation: 25 tons/day of tomatoes

Thinking in numbers clarifies the decision. Let’s consider a line processing 25 tons of fresh tomatoes per day:

Finished product: 25,000 kg ÷ 6 ≈ 4,100–4,200 kg of 28–30 brix paste per day
Seasonal production: approximately 250–310 tons of paste in a 60–75 day campaign
Hourly processing: ≈ 1,250 kg/hour of tomatoes in a 20-hour campaign shift
Evaporation load: water to be evaporated ≈ 20,800 kg/day → evaporator class with a capacity of ≈ 1,000–1,050 kg of water evaporation per hour
Steam requirement: in a double effect evaporator, ≈ 0.55–0.60 kg of steam per kg of water → boiler that will produce ≈ 600 kg of steam per hour

These five lines define the evaporator class, boiler capacity, and electrical load simultaneously. Do not compare the equipment list without performing the same calculation with your tomato amount.

Technical checklist before the offer

Daily reliable tomato supply (tons/day) and season length
Target brix (28–30 or 36–38) and target market (retail or industrial)
Hot break / cold break decision
Packaging: can, glass jar, aseptic bag, or combination
Current/planned closed area (m²) and ceiling height
Status of steam boiler, process water, and electrical power
Wastewater (tomato washing water) discharge plan
Off-season operation strategy (is there aseptic interim stock?)

The 5 most common mistakes we see in the field

Choosing capacity without looking at tomato supply: a facility that sets up a 50 tons/day line but can find only 20 tons of tomatoes in the season leaves half of the investment idle. First, secure the agricultural side with contracted production.
Choosing a small evaporator and extending the campaign: an evaporation bottleneck leads to fresh tomatoes waiting and quality loss. The evaporator is not a place to save by downsizing the line.
Leaving wastewater permit to the end: tomato washing water is voluminous; the discharge permit and pre-treatment plan are part of the licensing process and can take months.
Making the packaging decision after the line: can, glass, and aseptic filling are entirely different equipment; the "we'll decide later" approach means double investment.
Choosing the boiler independently from the line: if the steam boiler is not sized according to the evaporation load, the line will be marketed with a capacity it can never reach.

Four major items of operating cost

Investment cost is one-time; operating cost recurs every season. In a paste facility, the typical ranking is: tomato procurement cost (by far the largest item), energy (steam + electricity), packaging (can/barrel), and labor. This ranking highlights two engineering decisions: a heat recovery (highly efficient) evaporator directly reduces the energy line; a good sorting-washing section that reduces waste rates preserves the raw material line. When comparing offers, look not only at the machine price but also at the steam consumption declaration per ton.

Investment timeline: meet the season

The harshest reality of tomato paste investment is the timeline: the tomato campaign is between late July and October depending on the region, and if the line is not ready by that day, it waits until the next season. Plan backward:

2–3 weeks before the campaign: test production and operator training should be completed
2–3 months before the campaign: assembly and piping should be ongoing on-site
6–9 months before the campaign: equipment orders should be placed (evaporator production takes time)
Today: capacity decision, feasibility, and offer process

In practice, this means that an investor making a decision in the fall/winter comfortably meets the next season; while one deciding in spring risks the season with a tight project. Contracted tomato production negotiations are also held in winter — the agricultural side and equipment side schedules should be coordinated together.

Sales channel decision: retail or industrial?

The same line can serve two different business models. The retail (branded can/glass) model offers a higher unit margin; in return, it requires brand investment, shelf competition, and wide distribution. The industrial model (aseptic barrel 36–38 brix concentrate) is B2B sales to ketchup-sauce producers and export; the margin is thinner but the volume is large and collection is corporate. The decision also changes the equipment: in the retail model, can closing and labeling line is prominent, while in the industrial model, aseptic filling and high brix evaporation are highlighted. Many facilities combine both gradually: the first years to industry with barrels, and once the brand is established, retail packaging. This roadmap should be discussed before the offer so that the line is designed to be ready for the second phase.

Frequently Asked Questions

What does the line do off-season?

Facilities producing interim stock in aseptic bags can reprocess and package paste off-season, allowing them to operate year-round.

What is included in the turnkey scope?

Process design, equipment supply, assembly, commissioning, and operator training are consolidated under a single responsibility.

How is the brix value controlled during production?

Modern evaporators have in-line brix measurement and automatic control options; when the target value is reached, the product is automatically taken. Manual refractometer control may be sufficient on a small scale.

Which is more appropriate, can or aseptic bag?

If you are targeting retail sales, go for can/glass; if you are targeting sales to industry (ketchup, sauce producers), a 200+ kg aseptic barrel is standard. Two fillings can be combined on one line.

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