Core Technology & Working Principle
A sealant plant is not a mixer with a filler bolted on. The compounding, discharge and packaging stages share one pressure envelope and one recipe controller, and the paste never leaves a closed path between them. That continuity is what keeps a 1,500,000 cps batch free of the air it would pick up if it were transferred in open vessels, and it is why the line layout is engineered as a single system rather than as separate machines.
▲ Vacuum Compounding Core
A PMX double-planetary mixer or a PCM concentric reactor kneads and disperses the batch under deep vacuum, with PTFE wall and bottom scrapers sweeping the jacketed vessel so no stagnant product is left to skin or cure.
▲ Closed-Loop Discharge
A hydraulic follower plate presses down into the vessel and forces non-flowing paste through a sanitary manifold into the filling station, leaving almost no heel behind and no manual scooping step.
▲ Airless Packaging Stage
The filler doses bottom-up through a submerged nozzle, inserts the plunger and caps the cartridge on the same index, so the product meets its container without passing through open air.
Precision Engineered Details
The details below are the components plant managers inspect on a site visit, because they decide how the line behaves on the second shift and after the first year of production.
Production Line Modules
A standard line is assembled from five modules. Which model fills each module follows your viscosity, batch size and annual tonnage, so the table below describes the scope of each stage rather than a fixed configuration.
| Process Module | Core Equipment | Scope | Engineering Function |
|---|---|---|---|
| 1. Raw material feeding | Powder silos, liquid dosing skid, pulse-jet dust collector | Bulk powders, base polymer, additives | Loss-in-weight powder scaling and mass-flow liquid dosing, with sub-surface suction for fumed silica to keep the charging area free of dust. |
| 2. Vacuum compounding | PMX planetary mixer or PCM concentric reactor | 50,000–1,500,000 cps, 200–5,000 L | High-torque kneading plus high-speed dispersion, PTFE wall scraping and deep vacuum extraction in one closed vessel. |
| 3. Hydraulic discharge | PHD hydraulic extrusion press | Vessels from 200 to 3,000 L | A 20 MPa downward ram with a follower plate pushes non-flowing paste into the transfer manifold with almost no vessel heel. |
| 4. Packaging | Cartridge, sausage, pail and drum filling machines | 25–45 cartridges per minute, dosing accuracy ±0.5% | Bottom-up airless filling, plunger insertion, capping and carton packing, sequenced by the same PLC as the press. |
| 5. Utilities and structure | Steel mezzanine, chiller, vacuum pump, control cabinet | Full plant integration | Sanitary SS304/SS316L pipework, pneumatic control valves, jacket cooling and a central recipe controller; explosion-proof configurations are available upon request. |
Reference projects in your industry are available on request.
Our Manufacturing Advantages
🏢 Direct Source Factory
Shanghai Polyc Technology Co., Ltd. is not a reseller. Every turnkey sealant production line is machined, assembled and tested at our Wuxi plant, so you buy at the factory price and speak directly to the engineers who built it.
✈️ 30–45 Days Fast Delivery
Standard models ship in 30–45 days from confirmed drawings, thanks to our integrated vertical in-house production lines.
🛡️ Strict Quality Control
Key welds, seals and running accuracy are inspected before assembly, and each machine is run at the factory before packing.
🔧 3-Year Global Warranty
Every unit is covered for three years, with remote video support and spare parts stocked for dispatch worldwide.
Target Application Spectrum
The same line architecture covers the whole family of non-flowing, thixotropic pastes. Sealant and adhesive producers usually start from one of these four product groups.
Silicone Sealants
PU Adhesives
MS Polymers
Wall Putty
Planning a Sealant or Adhesive Plant?
Send your formulation type, operating viscosity in cps, target tonnage per year and workshop footprint. Our Wuxi process engineers return a layout proposal, P&ID and equipment schedule for your site.
Technical FAQ
The questions plant managers ask most often before committing to a sealant or adhesive line.