Машина вторичного вспенивания EPP (линия повторного расширения) - производитель оборудования EPS Китай

SPEPP-2F

CE ISO 9001

Машина вторичного вспенивания EPP (линия повторного расширения)

Name: Машина вторичного вспенивания EPP (линия повторного расширения)
Brand: ChinaEps
Availability: PreOrder

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Машина вторичного вспенивания EPP (линия повторного расширения) — epp secondary foaming by ChinaEps, CE & ISO 9001 certified.

Производим линию вторичного вспенивания EPP (повторное расширение) — уплотняет предварительно вспененные гранулы EPP до 30-200 г/л. Сертификат CE, 60+ стран.

Ключевые характеристики

Model

SPEPP-2F EPP Secondary Foaming Machine

Target Material

EPP (Expanded Polypropylene) beads

Barrel Diameter

1,400 mm

Batch Capacity

500-700 kg/h

Сертифицировано CE и ISO 9001 Гарантия на конструкцию 5 лет Технический ответ за 24 ч

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Inside the Machine — Core Components

Eight engineered subsystems that make this machine production-grade. Each component is sourced, built, and tested for industrial duty cycles.

1. Foaming Chamber (Vertical Pressure Vessel + Top-Mounted Agitator)

Function

Vertical pressure vessel where the second steam-foaming pass takes place. Top-mounted variable-speed agitator keeps beads in suspension during the 30-120 second cycle for uniform cell expansion. Insulated chamber body minimizes thermal loss between batches.

Engineering Details

Stainless steel SS304 / SS316L pressure vessel rated to 0.5 MPa (5x working pressure safety margin). Chamber volume 0.3-1.0 m3 (SM Edition) / 1.5-3.0 m3 (RP Edition). Top-mounted SEW or Bonfiglioli geared motor 1.5-4 kW with VFD speed control 30-120 rpm. Insulated body with rock-wool 50 mm + stainless cladding. CE / PED certified pressure vessel design.

2. Steam System (Supply Manifold + Distribution Network + Condensate Return)

Function

Stainless steel steam manifold delivers regulated steam pressure 0.05-0.15 MPa to the foaming chamber. Integrated condensate return line recovers water and reduces boiler load — typical 15-25 percent steam savings vs single-line discharge designs.

Engineering Details

DN50-DN80 stainless steel 304 piping with TIG-welded joints (no threaded connections at high temperature). ARI or Spirax-Sarco steam control valves with pneumatic actuators. Watson-Marlow or Festo solenoid valves on branch lines for batch-level steam isolation. Steam trap network on condensate return for cyclic discharge. Pre-insulated pipework with aluminum cladding for surface temperature less than 60 degC.

3. Pressure Control (Dual Gauge + Safety Relief Valve)

Function

Dual analog pressure gauges (independent primary + secondary) provide redundant pressure monitoring on the foaming chamber. Pneumatic safety relief valve discharges at 0.18 MPa preventing over-pressure events — critical for EPP processing where over-foaming damages bead structure.

Engineering Details

WIKA or Ashcroft analog gauges 0-0.25 MPa range with plus-minus 1.6 percent accuracy. Schneider / Honeywell electronic pressure transmitter (4-20 mA output to PLC) for digital recording + alarm setpoints. Pneumatic safety relief valve PSV 1/2 inch set to 0.18 MPa per ASME Section VIII. Pressure decay test interval 12 months per CE certification requirements.

4. Weighing / Feeding Unit (Gravimetric Hopper + Sealed Transfer)

Function

Stainless steel weighing hopper meters pre-expanded EPP beads into the foaming chamber with plus-minus 0.5 percent gravimetric accuracy per batch. Sealed pneumatic transfer prevents bead loss and maintains negative-pressure conveying integrity.

Engineering Details

Stainless steel SS304 hopper 100-500 liters with conical bottom 60-degree slope for free flow. Mettler Toledo or A&D load cells (3-4 cells per hopper) with summing junction box, accuracy plus-minus 0.5 percent of batch weight. Inflatable seal on discharge gate (compressed air 0.3-0.6 MPa) prevents bead leakage. Photoelectric level sensor triggers refill alarm.

5. Discharge System (Depressurization + Pneumatic Transfer to Aging Silo)

Function

Re-expanded beads exit the foaming chamber through a depressurization chamber, then pneumatic-conveyed to the downstream aging silo or directly to SM-1200 shape molding line (SM Edition). Pipe outlet with isolation valve enables independent batch processing.

Engineering Details

Stainless steel discharge chamber with butterfly valve (DN150) controlled by pneumatic actuator + PLC. Pressure equalization vent line returns excess steam back to manifold (reduces emission + recovers heat). Optional rotary airlock valve for continuous discharge (RP Edition). Pneumatic conveyor pipe DN100 mm 304 stainless steel with long-radius elbows (R/D greater than 1.5) to minimize bead damage.

6. PLC Control Panel (Siemens + Weintek HMI + Recipe Library)

Function

Independent control cabinet orchestrates the full batch cycle — feed weight, steam timing, pressure setpoint, agitator speed, cycle duration, and discharge sequence. Operator sets recipe by target density; PLC handles the rest with full traceability per ISO 9001.

Engineering Details

Siemens S7-1200 PLC + 10-inch Weintek HMI touch screen with multi-language interface (EN/ES/CN/RU). Status indicator lamps: green (run) / red (fault) / amber (standby). Alarm + interlock system per EN 60204-1 (e-stop / safety relay / light curtain). Recipe library 100+ slots indexed by bead grade, target density, customer batch ID. Ethernet/IP integration with upstream aging silo + downstream SM-1200 shape molding line for fully integrated EPP plants.

Технические характеристики

2 models

Параметр	SPEPP-2F-RP (Raw Producer Edition)	SPEPP-2F-SM (Shape Molder Edition)
Target Customer	EPP raw material producers (sell beads to downstream factories)	EPP shape-molding factories (own product manufacturing)
Configuration	3-batch parallel re-expansion line (visible in product photo)	1-batch compact re-expansion unit (right-sized for in-house density tuning)
Production Output	80-300 kg/hour (depending on target density)	20-80 kg/hour (just-in-time per molding order)
Bead Density Output	18-50 g/L (multi-grade inventory production)	18-50 g/L (adjustable per recipe)
Steam Pressure	0.05-0.15 MPa	0.05-0.15 MPa
Steam Consumption	0.4-0.6 kg steam per kg EPP	0.3-0.4 kg steam per kg EPP (lower per-batch overhead)
Compressed Air	1-3 bar (gas absorption stage)	1-3 bar (gas absorption stage)
Cycle Time	30-120 seconds per batch	30-90 seconds per batch (smaller batch faster)
Aging Tank Capacity	3 tanks x 0.5-1.0 m3 each	1 tank x 0.3-0.5 m3
Discharge Mode	Pneumatic transfer to aging silo + bagging line	Direct feed to SM-1200 shape molding line (just-in-time)
Control System	Siemens PLC + recipe library for multi-density production runs	Siemens PLC + integration with downstream SM-1200 PLC
Power	40-65 kW total installed	15-25 kW total installed
Floor Area Required	200-400 m2	60-100 m2

* Технические характеристики могут изменяться без предварительного уведомления. Свяжитесь с нами для получения актуальных данных.

Какие задачи решает эта машина

Три производственные проблемы, устраняемые этой машиной — с инженерно обоснованными и измеримыми решениями.

Проблема 1

Raw material producers need to convert first-expanded EPP beads (50-100 g/L) into target market densities (18-50 g/L) for sale to downstream shape-molding factories — but single-stage expansion physics cannot reach low density without compromising bead structure.

Как машина её решает

SOLUTION FOR RAW MATERIAL PRODUCERS — complete 3-batch parallel re-expansion line: aging tank + pressurized gas absorption + steam foaming + cooling. Configurable density output 18-50 g/L with 1.2-2.5x ratio. Produces sellable EPP bead inventory at 80-300 kg/hour.

Проблема 2

EPP shape-molding factories receive raw beads at fixed density from suppliers — but their product mix requires varied densities (e.g. 25 g/L for cushioning, 45 g/L for structural parts). Buying separate density grades from multiple suppliers is expensive and inventory-heavy.

Как машина её решает

SOLUTION FOR EPP SHAPE-MOLDING FACTORIES — single density input + in-house re-expansion = output multiple target densities on demand. Reduces raw material SKUs by 60-70 percent. Pairs directly with SM-1200 shape molding line for just-in-time density tuning per production order.

Принцип работы

SPEPP-2F runs the mandatory second foaming pass that distinguishes EPP processing from EPS — first-expanded EPP beads are pressurized, then steam-foamed under counter-pressure to reach target density 18-50 g/L with uniform cell structure.

Step 1

1. Aging Tank Loading

First-expanded EPP beads (50-100 g/L) load into pressurized aging tank for 4-24 hours conditioning at 1-3 bar gas pressure to absorb internal gas.

Step 2

2. Pressurized Gas Absorption

Compressed air or CO2 (1-3 bar) saturates the bead interior — this gas charge powers the second expansion when heated.

Step 3

3. Secondary Steam Foaming

Charged beads transfer to foaming vessel — steam 0.05-0.15 MPa at 100-120°C combined with counter-pressure expands beads 1.2-2.5x for 30-120 seconds.

Step 4

4. Cooling and Drying

Expanded beads cool immediately via vacuum or air cooling to lock cell structure, then dry to remove condensate moisture below 1 percent.

Step 5

5. Discharge to Downstream

Re-expanded EPP beads at target density 18-50 g/L discharge to aging silo for the molding line or directly to shape molding machine.

Подтверждённые инженерные преимущества

Каждое преимущество подкреплено измеримыми характеристиками — никаких маркетинговых утверждений без данных.

Re-Expansion Ratio

1.2-2.5x

против Single-stage EPS = 1x

Second foaming reduces density 30-60 percent vs first expansion alone — required by EPP physics.

Target Bead Density

18-50 g/L

против First-stage EPP = 50-100 g/L

Achieves the ultra-low density range demanded by automotive bumper cores and high-end packaging.

Steam Pressure Range

0.05-0.15 MPa

против EPS pre-expander = 0.05-0.10 MPa

Higher steam pressure than EPS pre-expansion accommodates EPP polypropylene melting point and re-expansion physics.

Production Output

80-300 kg/h

против Per line, depending on density

Configurable 3-batch parallel line design (visible in product photo) enables continuous output for high-volume EPP shape molders.

Cycle Time

30-120 seconds

против Per batch (excluding aging time)

Programmable per recipe — short cycle 30s for ultra-low density, longer cycle 120s for premium cell structure parts.

Реальные производственные применения

Где эта машина работает на реальных заводах.

Yoga foam roller and exercise foam tube (EPP density 30-45 g/L for compression resilience)

EPP foam model airplane and RC glider — lightweight, crash-resistant, shape-molded fuselage

EPP shape-molded pipe fittings and HVAC duct components (heat-stable to 130°C)

Large-format EPP building blocks for children playground and indoor play centers

EPP food-delivery cold-storage box (reusable, washable, insulation Δ < 4°C/8h)

Modular EPP storage cabinets and organizer cubes (multi-color, stackable shape-molded)

Build a Complete EPS / EPP Line

This machine integrates into the full ChinaEps production flow — upstream, downstream, and auxiliary equipment from one supplier.

Upstream — Bead Preparation

Raw EPP Beads

Primary-foamed EPP beads from JSP, Kaneka, BASF, or Asian partner producers. ChinaEps sources via approved automotive-grade suppliers.

High-Pressure Steam Boiler (1+ ton/h)

Required for EPP's elevated steam pressure. ChinaEps quotes complete boiler package matched to SPEPP-2F.

Downstream — Finishing & Packing

EPP Shape Molding Machine

Forms EPP beads into final automotive bumper cores, sporting goods, packaging shapes. Required downstream of SPEPP-2F.

Premium Aging Silos

Fluidized aging silos for 24-72h moisture stabilization between SPEPP-2F and shape molding.

Auxiliary Systems

IATF 16949 QA Documentation

Documentation package supporting customer's IATF 16949 automotive quality system certification.

Краткий ROI

Ориентировочные цифры — для точного расчёта по вашим данным используйте калькулятор ROI.

Инвестиции в оборудование

~$1,400-1,600/ton FOB illustrative (quote-specific)

Срок окупаемости

14-18 months at 500-700 kg/h EPP production for automotive Tier-1 customer

Производительность

500-700 kg/h continuous batch; 4-5 t/day single-shift; 10-12 t/day double-shift

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Product FAQ

The questions buyers ask most often before placing an order.

Why can't I use my existing EPS pre-expander for EPP?

Two physical reasons. (1) Steam pressure: EPP needs 0.5-0.8 MPa, EPS pre-expanders are rated for 0.18-0.25 MPa — running at higher pressure exceeds the pressure vessel certification and risks rupture. (2) Agitator: EPP has higher viscosity during expansion, EPS agitators are sized for lower torque — running EPP destroys agitator seals within months.

Does SPEPP-2F also work for EPS?

Yes — backward compatible, just run at lower steam pressure (0.18-0.25 MPa range). But it's overkill for EPS-only production — EPS pre-expanders are 30-40% cheaper.

What automotive certifications does SPEPP-2F support?

IATF 16949 compatible (automotive supplier quality system). The machine itself is CE + ISO 9001 certified; your factory needs to add IATF 16949 process certification separately. We provide documentation supporting IATF audits.

Steam boiler requirement?

Minimum 1.0 ton/h at 1.0 MPa working pressure. Higher boiler spec than EPS due to EPP's elevated steam requirements.

Ships to 220V/60Hz?

Yes — factory build option. 3-week lead time adjustment for the larger motor sourcing.

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