Máquina de moldeo por soplado de una etapa frente a máquina de moldeo por soplado de dos etapas: ¿Cuál es la más adecuada para su planta?

por | 17 de agosto de 2026 | Máquina de moldeo por soplado de dos etapas

Descripción general del producto

Sectores aplicables: Mineral water bottling, carbonated soft drinks (CSD), edible oil packaging, daily chemicals, and cosmetics.

Resumen de las principales ventajas: The two-stage stretch blow molding machine separates preform injection from the blowing process. Designed by EVER POWER, a leading manufacturer based in the Netherlands, this equipment guarantees blazing fast production speeds, superior lightweighting capabilities, and absolute control over material distribution compared to traditional one-step systems.

Two Stage Blow Molding Machine Factory

2. Technical Parameters (EP.ES Series)

Parámetro Especificación
Caries 2 to 8 Cavities
Output Capacity (BPH) 2000 – 9200 BPH
Max Volume 100ml to 20L
Max Blow Pressure 35 bar (3.5 MPa)
Sistema de control Servo-driven mechanics

3. Principio de funcionamiento y estructura

The two-stage process begins with cold, pre-injected PET preforms. These preforms are loaded into an automated unscrambler and fed into a multi-zone infrared rotary heating oven. Here, they are heated to their precise glass transition temperature. Once softened, they transfer into the clamping unit where a servo-driven stretch rod pushes the material vertically, while high-pressure air forces the PET horizontally against the chilled aluminum mold walls. This biaxial stretching creates a highly rigid, crystal-clear bottle.

4. Ventajas principales

🚀 Extreme Production Speed

By decoupling injection from blowing, the machine achieves outputs up to 9200 BPH, dominating one-step systems.

💡 Energy Efficiency

Advanced high-pressure air recovery systems reuse exhaust air, drastically cutting compressor electrical load.

🛠️ Flexible Supply Chain

Purchase preforms from external suppliers rather than melting raw resin on-site, saving factory floor space.

🎯 Servo Precision

Servo-driven stretch rods ensure exact wall thickness, minimizing scrap rates and material waste.

🔄 Quick Format Changes

Drawer-style aluminum molds allow format changes in under 45 minutes, ideal for dynamic bottling lines.

PET Water Bottles

5. Estructura y tecnología de materiales

EVER POWER utilizes heavy-duty alloy steel for the main chassis, suppressing vibrations during high-speed clamping. The blow molds are exclusively machined from high-grade aerospace aluminum to maximize heat dissipation and cooling rates. Essential pneumatic valves and servo drivers are sourced from premium international supply chains, guaranteeing longevity and strict hygiene compliance for food-grade operations.

6. Aplicaciones típicas

  • Mineral Water: High-speed blowing of ultra-lightweight bottles with petaloid bases.
  • Cosmetics & Skincare: Molding thick-walled, special-shaped PETG containers for luxury serums.
  • Aceite comestible: Processing heavy-gram preforms into 5L-20L bulk containers with integrated handle molding.

7. Guía de selección

To specify the correct two-stage machine, confirm the following with our Dutch engineering team:

  • Target production speed (BPH) to determine the number of cavities.
  • Maximum bottle volume and exact neck diameter.
  • Local power grid specifications and available compressed air capacity.

8. Brand Comparison: High ROI Alternative

*Disclaimer: We mention Krones and Sidel models purely for technical selection reference. EVER POWER does not sell counterfeit products nor do we infringe on any global trademarks.*

Característica EVER POWER EP.ES Series Krones Contiform / Sidel Matrix
Inversión de capital Highly competitive, fast ROI Premium pricing, longer ROI
Cambio de molde Drawer-style, fast manual change Fully automated, highly complex
Costo de mantenimiento Low, accessible parts High, proprietary components
Aluminum Blowing Mold

9. Certificación de calidad y servicio

Headquartered in the Netherlands, EVER POWER rigorously adheres to CE and ISO9001 standards. We provide robust warranties, global remote diagnostics, and swift parts dispatch.

10. Estudios de caso: Notas de campo globales

🇳🇱 Netherlands (Beverage Co.): “Deployed a 6-cavity EP.ES line for our new CSD brand. Speeds reliably hit 7200 BPH. The localized Dutch engineering support is phenomenal.”
🇧🇷 Brazil (Cosmetics Plant): “Needed to blow complex oval lotion bottles. The servo-stretching handled the geometry perfectly without thin corners.”
🇹🇭 Thailand (Edible Oil): “The 20L handling capability and centralized heating cut our power consumption drastically. Excellent ROI.”

11. Partner With Us for Packaging Supremacy

Scale your production seamlessly. Contact our Dutch headquarters today to engineer your perfect two-stage solution.

Get a Custom Layout

12. Preguntas frecuentes

Why choose two-stage over one-step for water bottles?

Two-stage machines offer vastly superior production speeds and lighter bottle weights, vital for competitive water bottling economics.

Can this machine process rPET?

Yes, our infrared ovens dynamically adjust to accommodate recycled PET thermal properties.