Glass thermal shock fractures
Filling hot tomato paste (85°C) into cold glass jars causes thermal shock. FPM pre-heats jars inside an integrated tunnel.
Process Technology Profile
Particulate Tomato Sauce Packaging Line
Acidic hot-fill tomato paste and ketchup route.
Engineered for high-temperature sanitary dosing, thermal-shock resistance, and high-vacuum sealing using food-grade SUS316L contact components.
Application Fit Overview
Tested Viscosity Profile / Compatible Formats
Tested Viscosity Profile
High Viscosity (120,000 cps)
Compatible Formats
Twist-Off Cap
Filling Temp
80°C - 85°C (Hot-fill pasteurization)
Closure Type
Metal Twist-Off (TO-66 / TO-82)
Production Risks & Controls
Production Risks & Controls
Acidic machinery corrosion
Tomato paste is highly acidic, degrading standard metals. FPM builds all product contact surfaces from food-grade SUS316L.
Vacuum collapse after cooling
Rapid cooling after hot fill deforms thin glass jars. FPM capping chambers regulate steam vacuum pressure settings.
Engineering Pre-Diagnosis
FPM Turnkey Line Engineering Pre-Diagnosis
1. Material & Rheology
Tomato paste (36-38% Brix) exhibits high viscosity and non-Newtonian flow behavior after reconstitution. A double-jacketed heated hopper and large-bore piston cylinders are required to prevent sedimentation. Filling nozzles must feature active pneumatic suck-back to prevent tail dripping onto bottle threads.
2. Vessel Adaptation
Classic 500g wide-mouth glass jars (GOST 5717.2 compliant) are prone to thermal shock fractures. FPM turnkey lines must integrate a steam pre-heating tunnel before the filling block to warm jar walls above 60°C, eliminating cracking hazards under 85°C hot-fill.
3. Closure & Vacuum
Sealed with Twist-Off metal caps (TO-66 or TO-82). Preservative-free paste relies on high vacuum for shelf stability. The capper must inject superheated steam to displace air, ensuring residual vacuum exceeds 0.04 MPa and safety buttons drop post-cooling.
4. Turnkey Integration
Jars discharging from hot-fill display heavy condensation. Downstream stages must integrate a graduated cooling tunnel and high-velocity laminar air knives to dry jar surfaces. Otherwise, cold glue labeling will bubble/peel, and inkjet coding will smudge on wet glass.
System Architecture
Process Route
01
Jar Steam Pre-heating
Pre-heating tunnels raise glass temperature to prevent cracking under hot filling.
02
Hot-Fill Volumetric Dosing
Volumetric piston system with continuous circulation path maintains paste temperature.
VIDEO PROOF
Tomato Paste Turnkey Filling Production Line
03
Steam-Vacuum Twist-Off Capping
Controlled steam injection establishes airtight vacuum seals for hot food jars.
04
Post-Fill Cooling Tunnel
Graduated shower zones cool products down to ambient levels prior to labeling.
Production Packaging Showcase
Production Packaging Showcase
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