The EP cosmetic bottle series adopts the two-stage reheat stretch blow molding process — the globally dominant method for high-volume PET container manufacturing. By separating preform injection from the blowing station entirely, the process enables full optimization of preform wall distribution independently of blowing speed, resulting in thinner, lighter, and more optically uniform bottles than single-stage processes can achieve at comparable throughput.

This machine is particularly well-suited to cosmetic and daily chemical containers where bottle geometry complexity is high — oval cross-sections, flat-panel surfaces, asymmetric shoulder profiles, and wide-mouth openings up to 168 mm neck diameter. The independent servo-driven stretching rod delivers precise biaxial molecular orientation, imparting the clarity, drop resistance, and barrier performance that cosmetic packaging demands.

The series covers a broad output range, from 900 BPH on large-volume wide-body containers up to 4,800 BPH on compact 4-cavity configurations, giving procurement teams a single qualified supplier for an entire packaging portfolio spanning shampoo, body lotion, household cleaner, skincare, and industrial daily chemical formats.

PET/PETG preforms are auto-fed onto rotating mandrel carriers and conveyed into the infrared oven without manual handling.

Multi-zone IR lamps heat preforms to precise orientation temperature. Per-zone tuning enables wall distribution control on asymmetric bottle bodies.

Servo rod extends axially at controlled speed and force, stretching the preform to full container height and initiating biaxial molecular orientation.

Up to 35 kg/cm² blowing pressure expands the preform radially against chilled mold walls, locking in final bottle geometry with high surface gloss.

Finished bottles eject automatically and move downstream for labeling or filling. No operator contact at the blowing station throughout the production cycle.

Independent zone temperature control from preform body to neck finish. Critical for asymmetric cosmetic bottle profiles where uneven heating causes wall thinning and visual defects.

Servo motors and reducers on stretching, clamping, and transfer systems deliver precise torque and position control, reducing cycle time variation and unplanned downtime across multi-shift production.

Neck diameters from 18 mm up to 168 mm across the model range. The EP.ES-2C260 handles wide-body containers up to 15,000 ml with 168 mm necks — formats most two-stage machines cannot address.

High-strength aluminum alloy molds machined on 5-axis CNC centers. Dimensional repeatability within ±0.05 mm maintains cosmetic-grade surface quality and weight consistency across full production runs.

Industrial PLC with color HMI stores multiple bottle format recipes. Operators reload a saved parameter set in minutes — significantly reducing format-change downtime on multi-SKU cosmetic production lines.

Full safety door interlocks on all access panels, compliant with CE mechanical safety directives. Emergency stop circuits are hardwired independently of PLC logic for fail-safe shutdown.

Global cosmetic and personal care brands increasingly mandate recycled content targets — 25%, 50%, or 100% rPET — in their packaging specifications. The EP daily chemicals series accommodates rPET blends across this full range, subject to upstream preform IV management.

Recycled PET typically carries lower and more variable intrinsic viscosity (IV) than virgin resin, narrowing the orientation temperature window and reducing melt strength during blowing. The EP series addresses this through three engineering provisions:

• Extended oven dwell time programming — independent oven speed and per-lamp intensity adjustment compensates for rPET batch-to-batch IV variation without overheating the neck finish.
• 35 kg/cm² blowing pressure — maximum cavity-fill capability ensures complete bottle formation even when rPET material has reduced melt strength at orientation temperature.
• PETG compatibility without hardware modification — for brands requiring higher chemical resistance or elevated clarity in premium cosmetic containers, PETG runs on the same machine without tooling changes.

rPET processing guideline: recommended IV 0.72–0.84 dL/g, moisture below 50 ppm before blowing. Preform drying at 160°C for 4–6 hours is required prior to production.

200 ml – 1,000 ml oval and round bottles with varied neck finishes for personal care filling lines.

Asymmetric PETG cosmetic bottles demanding high surface gloss and precise wall thickness for premium brand packaging.

Trigger-pump neck format containers and detergent bottles in PET with ergonomic grip geometry.

Up to 168 mm neck diameter — specialty cosmetic cream jars and wide-body containers unreachable by most two-stage machines.

EP.ES-2C260 handles up to 15,000 ml — large daily chemical storage and industrial-use PET packaging.

The EP.ES-4C76 at 4,800 BPH theoretical output, running 20 hours per day at 85% efficiency, delivers approximately 81,600 bottles — sufficient to supply a mid-scale cosmetic filling line at minimal incremental labor per unit produced.

Common heating power for 4-cavity models runs 18–21 kW at 4,600–4,800 BPH, placing energy cost below 4 kWh per 1,000 bottles — a benchmark that materially undercuts less efficient single-stage alternatives at equivalent output.

A single EP machine handles a cosmetic brand portfolio spanning 200 ml serum bottles to 1,500 ml shampoo containers. PLC recipe recall and mold changeover are the only reconfigurations needed — reducing total capital investment versus multiple dedicated format lines.

Every EP two-stage blow molding machine undergoes a 72-hour continuous production trial run before shipment. Output rate, heating consistency, blowing pressure stability, and cycle time repeatability are all logged against specification tolerances. Machines that do not meet rated performance are held for engineering rectification before release.

As a full-chain supplier, EVER POWER can deliver the complete production package alongside the blowing machine:

• Custom blow molds in aluminum alloy, 3D-designed to customer bottle drawings
• Matched preform injection molds in imported 2316 tool steel
• High-pressure and low-pressure industrial air compressors
• Industrial chillers sized to machine cooling water demand
• Preform dehumidifying dryers and auto-loaders
• On-site installation, commissioning, and operator training by factory-trained engineers