Adhesive Production Line

Project Background:

SIEHE Group has custom-designed a high-performance automated adhesive production line for a well-known European building materials company, primarily for the expansion of its epoxy putty and other product lines. This client has been deeply rooted in the European building materials market for over twenty years, possessing multiple mature automated production lines and demonstrating strong manufacturing capabilities and a prominent brand influence. This new production line aims to comprehensively enhance the automation level and production precision of epoxy putty products, meeting the client's demands for high-quality manufacturing and refined management.

Project Overview

Location: Europe

Materials: Epoxy Putty

Viscosity: 200,000-250,000 cps

Capacity: 500L/batch

Process Flow

Based on the customer's material characteristics and production needs, we have carefully designed a complete adhesive production line for them. This production line consists of an automatic powder batching system, an automatic liquid batching system, a track system, a mixing & extrusion system, a finished product filling system, a control system, and etc.

1)Automatic Powder Raw Material Batching System

This system utilizes two integrated ton bag and small bag unpacking stations for five types of powder raw materials, unpacking and unloading in a step-by-step manner. The aperture valve controls the feeding speed, effectively preventing dust leakage, and the material is transported to the corresponding storage tank through a vacuum method. Materials are conveyed to their corresponding storage tanks via vacuum. A screw conveyor transports the powder from a 2500L storage tank to a 500L metering silo. A frequency converter controls precise feeding, and tracking compensation reduces batching errors. Incremental batching is employed, with weighing sensors outputting signals to the PLC to achieve automatic feeding of the five materials. The metering silo outlet connects to a vacuum feeder, which conveys materials to the mixer at a sealed, uniform speed. Dust-free powder feeding is achieved, and a weighing sensor performs weight verification to ensure accuracy.

2)Automated Liquid Raw Material Batching System

The liquid batching system includes the storage and batching of two types of resin raw materials, one type of low-viscosity liquid bulk, and seven types of liquid additives. Precise batching is achieved using a pumping and weighing module (incremental metering): Resin are transported to the storage tank via a pouring station and screw pump, and then pumped by the screw pump through pipelines to the weighing station in the mixing zone for metering; the low-viscosity liquid bulk is transported from a 200L raw material tank or IBC tank to a 1300L storage tank via a pneumatic diaphragm pump for temporary storage, and then transported to the weighing station in the mixing zone via a diaphragm pump and damper for metering; liquid additives are transported from a 200L raw material tank to a 300L storage tank via a pneumatic diaphragm pump, and then fall into a 50L metering chamber equipped with a weighing module for metering, which is connected to the mixer.

3)Track System

The track system connects the mixer, extruder, and weighing station. It has four waiting stations to manage five movable mixing tanks and is equipped with two turntables for movable tanks transfer. One of the waiting stations has a Mettler Toledo weighing module for weighing liquid raw materials with a measurement accuracy of 3‰.

4)Mixing & Extrusion System

After automatic batching, the movable mixing tank is conveyed to the mixing station via a track. Based on the material characteristics, the mixing system uses a double planetary dispersion mixer with precision-cast, CNC-machined spiral-type mixing blades suitable for mixing high-solids, high-viscosity materials. An independent PTFE scraper operates against the material's reverse force, ensuring no dead zones in the mixing process. A vacuum system is added to meet process requirements, achieving a vacuum level of up to 10 mbar, satisfying the stringent environmental requirements of the material production process. The movable tank is equipped with a hydraulic locking device and limit switches, ensuring precise positioning, convenient operation, and significantly reducing vibration during mixing, making it highly practical.

After mixing, the movable tank reaches the extrusion station via a track, where it is discharged from the extruder. The extruder uses a three-column hydraulic cylinder with high and adjustable pressure, suitable for high-viscosity materials, ensuring no residue after extrusion.

5)Finished Product Filling System

The extruder is connected to the filling system via pipelines for finished product filling. Empty barrels are manually stacked onto a powered moving track and then automatically transported to the barrel separating area for separation. After separation, the barrels are automatically transported to the filling station and precisely positioned under the dual filling heads. The filling area is equipped with a Mettler Toledo weighing module, using weight measurement for accurate filling. After filling, the barrels are automatically moved to the sample addition station, where samples are manually added, and then proceed to the re-weighing station for verification. Products that pass verification automatically enter the capping area for automatic capping. After filling and capping, the finished barrels are automatically transported to the finished product area for temporary storage.

Conclusion

This adhesive production line was designed and manufactured with a deep understanding of the client's material characteristics and stringent process requirements, integrating automatic batching, efficient mixing, and intelligent filling. The successful commissioning of this line will not only provide core equipment support for the client's strategic expansion in the high-end building materials sector, significantly improving the stable supply capacity and production efficiency of high-quality products, but will also significantly enhance its core competitiveness in the European and global markets.