Piston Filling Line for Polyurethane Sealant Manufacturer

Customer demand

In 2010, a polyurethane sealant producer needed a fully automatic aluminum cartridge packaging machine to replace their costly manual step-by-step filling operation.

Problems of manual filling

To produce such products, you need to carry out processes including filling, plunger inserting, desiccant adding, cartridge closing with aluminum cap and coding. This typically requires 6 people to cooperate. Moreover, safety accidents and quality problems are common in each process.

Manual filling has high metering error of ±5g/300ml. Manual plunger inserting easily cause bubble during the operation. Manual desiccant adding omission phenomenon. Manual plunger inserting and cartridge closing with cap has unsatisfactory sealing effect, with about 2% reject rate. Manual coding may appear unclear. Customer requirements

This client required reduced labor cost, reduced material loss and solving the quality safety problem in each process.

Our solutions

Based on the requirements of the customer, our technicians developed and produced an automatic horizontal piston filler (GRQY-3500-I) integrating automatic empty cartridge feeding, plunger feeding, filling, plunger inserting, desiccant adding, cartridge closing with cap and coding.

Its detailed functions and effects are as follows: Automatic filling: adopting volume metering mode, its efficiency is within ±2g/300ml. Automatic plunger inserting: using vacuumizing-first and capping-second method, no bubbles form during the operation. Automatic desiccant adding: this avoids human fatigue factor and the desiccant adding rate is 100% qualified. Automatic cartridge closing with aluminum cap: with mechanical arm assisted cartridge closing device, the sealing effect satisfied the customer’s requirements. The reject rate is no more than 3‰. Automatic coding is stable, having clear and uniform prints. Customer feedback

Now the equipment runs stably with 2 operators reduced from 6. With greatly improved safety factor, no accidents occurred. And the product quality was under control, without undesirable phenomenon like packaging disorder, etc. After running for 3 months, this customer replaced all filling machines with our automatic piston fillers.