Automatic Foaming Hand Soap Filling Line for Pakistani FMCG Leader

To support a prominent FMCG wholesaler and personal care distributor in Pakistan expanding its liquid manufacturing capacity, Shanghai LWT engineered a high-precision, anti-foaming packaging solution. Designed for multi-format PET containers ranging from 200ml to 1,000ml, this automated line integrates high-accuracy dosing, corrosion-resistant engineering, and continuous 50–60 BPM throughput.

1. Severe Foaming and Dosing Inconsistencies: Foaming hand soaps and surfactant-rich personal care formulas generate substantial foam when filled at high velocities. Conventional top-fill nozzles caused liquid turbulence, overflow spills, and product wastage, leading to inconsistent fill levels across different batches.

2. Multi-Format Flexibility Across Harsh pH Conditions: The client required a single packaging line capable of handling five distinct PET bottle sizes (200ml to 1,000ml) across products spanning highly alkaline hand soaps (pH 13) to acidic detergents (pH 3), demanding robust chemical resistance in humid plant conditions.

3. Line Stability and Power Continuity: Maintaining a steady 50–60 BPM continuous output required synchronized container transfer without bottle tilting, along with electrical protection against regional power fluctuations that could trigger PLC reset or unscheduled downtime.

1. Anti-Foam Side-Wall Infeed & Diving Filling: Shanghai LWT deployed an 8-head automatic filling machine equipped with bottom-up diving nozzles that rise synchronously with the liquid surface. The product tank features a side-wall infeed structure that allows liquid to slide smoothly along internal walls with automatic level control, preventing agitation and achieving a dosing precision of ±0.3%–0.5%.

2. Corrosion-Resistant SUS316 Contact Engineering: All product contact parts were constructed from premium SUS316 stainless steel to withstand aggressive pH levels (pH 3–13), supported by a robust SUS304 machine frame. A 153mm wide slat conveyor system with quick-adjust guide rails accommodates 200ml–1,000ml PET bottles (diameter 50–150mm, height 75–375mm) with fast, tool-less changeover.

3. Synchronized Packaging Integration with UPS Protection: The complete turnkey line links a rotary bottle unscrambler, 8-head liquid filler, inline capping machine, inkjet coding station, and packing tables. The system incorporates transparent protective enclosures and dedicated UPS connections for HMI, PLC, and servo drives to ensure uninterrupted production during power dips.

● Consistent 50–60 BPM Output: Achieved reliable continuous packaging speeds of 60 BPM for 200ml bottles and 50 BPM for 1,000ml bottles.

● Zero Foam Spillage with ±0.3%–0.5% Precision: Submerged diving filling and side-wall tank feeding eliminated foaming overflow, ensuring pristine bottle exteriors and minimal product loss.

● Extended Service Life in Humid & Chemical Conditions: SUS316 contact metallurgy prevented corrosion from pH 3–13 formulas, significantly cutting maintenance downtime.

● Rapid Multi-Format Changeovers: Modular guide rail and height adjustments enabled fast transition between 5 bottle sizes with minimal operator intervention.

Whether you are packaging foaming hand soaps, detergents, cosmetics, or chemical liquids, Shanghai LWT provides tailored turnkey filling and packaging systems designed to your exact container dimensions, formula viscosity, and target capacity. Contact our engineering team today with your product recipe, bottle drawings, and target speed to receive a detailed layout proposal and quotation within 24 hours.

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