Egypt Year: 2025
Configuration
5 containers/year, 90 tons total
Outcome
Cairo-based household appliance OEM cut packaging cost 18%, cycle time on existing SM-1200 dropped from 65 s to 42 s.
B (B-301 / 302 / 303 / 401 / 501)
ISO 9001 REACH RoHS
EPS Fast Cycling Grade Material — B-301 to B-501 Beads from China, MOQ 5T
Complete-line EPS specialist — 500+ factories running on our equipment
EPS Fast Cycling Grade Material — B-301 to B-501 Beads from China, MOQ 5T — eps raw materials by ChinaEps, ISO 9001 & REACH & RoHS certified.
EPS fast cycling grade material from China — B-301 to B-501 beads cut molding cycles 20-30%. Full grade datasheet, factory-direct price, MOQ 5 tons FOB.
Key Specifications
Material
Expandable Polystyrene (EPS)
Grade
Fast Cycling (FC) — B-301 / B-302 / B-303 / B-401 / B-501
Bead Size (Unexpanded)
0.4-0.7 mm
Expansion Ratio
40-60x
CE and ISO 9001 Certified 5-Yr Structural Warranty 24h Technical Response
Technical Specifications
| Parameter | B-301 | B-302 | B-303 | B-401 | B-501 |
|---|---|---|---|---|---|
| Bead Size | 1.00-1.60 mm | 0.85-1.25 mm | 0.70-0.90 mm | 0.50-0.80 mm | 0.40-0.60 mm |
| Expansion Times | 55-70 | 50-60 | 40-55 | 35-45 | 30-40 |
| Density | 14-18 g/L | 16-20 g/L | 18-25 g/L | 22-30 g/L | 25-35 g/L |
| Blowing Agent (Pentane) | 5.5-6.8% | 5.5-6.8% | 5.5-6.8% | 5.5-6.8% | 5.5-6.8% |
| Residual Styrene Monomer (SM) | ≤2000 ppm | ≤2000 ppm | ≤2000 ppm | ≤2000 ppm | ≤2000 ppm |
| Moisture | ≤1.0% | ≤1.0% | ≤1.0% | ≤1.0% | ≤1.0% |
| Coating Agent | N.A. | N.A. | N.A. | N.A. | N.A. |
| Oxygen Index | N.A. | N.A. | N.A. | N.A. | N.A. |
* Specifications are subject to change without notice. Contact us for the latest technical data.
What This Machine Solves
Three production problems eliminated by this machine — with engineered, measurable solutions.
The Problem 1
Standard EPS raw material requires 8-12 minute molding cycles, capping factory output
How This Machine Solves It
Fast Cycling Grade beads — engineered with 5.5-6.5% pentane and tighter molecular weight distribution — let shape molders run 5-7 minute cycles, lifting daily output 25-40%.
The Problem 2
Mid-tier EPS raw material delivers inconsistent expansion ratios across batches
How This Machine Solves It
Fast Cycling Grade narrow size distribution (D90/D10 ratio under 1.6) holds expansion ratio within ±3 times, drastically reducing density variation.
The Problem 3
Imports from BASF / SABIC carry 25-35% premium over Chinese supply
How This Machine Solves It
ChinaEps Fast Cycling Grade matches imported quality on cycle time and consistency at ~$1,400-1,600 USD/ton FOB illustrative (actual quote-dependent) — 25-30% cheaper than imported equivalents.
Working Principle
Fast Cycling Grade is a class of expandable polystyrene (EPS) beads where the polymer molecular weight distribution and pentane (blowing agent) content are tightly controlled to enable shorter steam-fusion cycle times in shape molding. The faster cycle comes from optimized cell-wall structure that softens and bonds at lower steam pressure.
Step 1
1. Polymerization
Suspension polymerization in 80 m³ reactor; styrene + pentane + initiator.
Step 2
2. Pentane Loading
5.5-6.5% pentane loaded; tighter than standard grade (4.5-6.0%).
Step 3
3. Sieving
Multi-stage sieving sorts beads into 0.4-0.7 mm / 0.7-1.0 mm / 1.0-1.5 mm fractions.
Step 4
4. QC Sampling
Every batch tested: pentane content, bead size distribution, residual styrene.
Step 5
5. Packing
25 kg PE bags or 1,000 kg jumbo bags; 6-month shelf life cool storage.
Engineered Performance Advantages
Every advantage backed by measurable specs — no marketing claims without data.
Molding Cycle
5-7 minutes
vs standard grade 8-12 min
25-40% faster cycle; same factory produces 25-40% more daily.
Bead Size Tolerance
D90/D10 < 1.6
vs standard grade ~1.9-2.2
Tighter size distribution improves density consistency.
Pentane Content
5.5-6.5%
vs lab-tested every batch
Optimized for fast expansion without compromising mechanical strength.
Price vs Imported
25-30% cheaper
vs vs BASF / SABIC equivalents
Same cycle-time spec at significantly lower per-ton cost.
Real Production Applications
See where this machine fits in real factories.
Machine Configuration
Industrial-grade components from established global brands — every part traceable.
| Component | Brand / Spec | Detail |
|---|---|---|
| Bead Diameter (Standard Grade) | F1 / F2 / F3 | 0.4-0.7 mm / 0.7-1.0 mm / 1.0-1.5 mm; choose by part wall thickness. |
| Pentane (Blowing Agent) | In-house blend | 5.5-6.5%, lab-certified per batch. |
| Residual Styrene Monomer | GC-tested | Below 1,500 ppm; food-contact safe. |
| Packaging | PE film, jumbo bag | 25 kg / 1,000 kg; export-grade pallet wrap. |
| MOQ | 5 tons | Container-load discounts at 18+ tons. |
| Shelf Life | 6 months | Cool storage 5-25°C, away from sparks. |
Customer Case Studies
Customer details available on request.
Mexico Year: 2024
Configuration
Trial 18 tons → annual contract 240 tons
Outcome
Replaced imported BASF Styropor F-grade; saved ~$32,000 illustrative in first year on material cost alone (actual delta contract-specific).
Live Footage
See This Machine Running
Real ChinaEps production line footage from customer factories — not stock video.
EPS Pre-Expander Machine — How Beads Are Processed
ROI Snapshot
Quick reference numbers — for a precise quote with your factory data, use the ROI Calculator.
Equipment Investment
~$1,400-1,600/ton FOB illustrative (quote-specific)
Payback Period
Material payback is operational — saves ~$400-600/ton illustrative vs imported BASF/Styropor F-grade (actual delta by contract & spot market)
Throughput
Cycle-time uplift typically lifts factory daily output 25-40%.
Product FAQ
The questions buyers ask most often before placing an order.
What is fast cycling grade EPS and how is it different from standard EPS?
Fast cycling grade EPS is engineered with 5.5-6.5% pentane and a tighter molecular weight distribution so beads fuse faster under steam. This cuts shape-molding cycles from 8-12 minutes to 5-7 minutes, lifting daily output 25-40% on the same machine. Standard EPS works fine but caps your throughput.
How much does EPS fast cycling grade material cost per ton?
Fast cycling grade EPS beads run illustratively ~$1,400-1,600/ton FOB Shanghai at MOQ 5 tons — roughly ~$400-600/ton cheaper than imported BASF/Styropor equivalents at the same grade. Pricing varies with pentane content, bead size, and order volume. Larger contracts (100+ tons/year) qualify for volume discounts.
What is the minimum order quantity and lead time?
MOQ is 5 tons (one pallet batch). Lead time is 7-15 days from order to FOB, plus 15-45 days sea freight depending on destination. Each shipment ships with a technical datasheet and pentane content certificate. Request fresh beads (under 14 days old at FOB) for maximum usable shelf life.
Are fast cycling beads compatible with my existing pre-expander and molding machines?
Yes. Fast cycling grade runs on standard PE-900 to PE-2000 pre-expanders and any block or shape molding machine with only minor parameter recalibration (slightly shorter steam time). No hardware change is needed — you simply reprogram your cycle recipe to capture the faster fusion.
Which products benefit most from fast cycling EPS?
High-volume shape-molded products gain the most: fish boxes, cooler boxes, appliance inserts, and electronics packaging where cycle time directly limits daily output. Factories running multiple shifts or near capacity see the fastest payback because every saved minute per cycle compounds across thousands of cycles per month.
Which EPS fast cycling grade material should I order — B-301, B-302, B-303, B-401 or B-501?
Pick by bead size and finished density, not by grade number. B-301 (1.00-1.60 mm, 55-70x expansion, 14-18 g/L) suits bulky low-density work — blocks, void fill, large packaging. B-302 and B-303 sit in the middle at 16-25 g/L and cover most fish box, cooler box and insulation board production. B-401 (0.50-0.80 mm, 22-30 g/L) and B-501 (0.40-0.60 mm, 25-35 g/L) use the finest beads and are the right choice for thin walls, sharp corners and surface-critical parts such as appliance inserts, helmet liners and electronics trays. Send us your part drawing and target density and we will match the grade and send a 5 kg trial sample.
Do you supply EPS fast cycling grade material direct from the factory in China?
Yes. We ship direct from the production plant with no trading-house markup, which is where most of the price gap against imported grades comes from. MOQ is 5 tons FOB, container-load pricing starts at 18+ tons, and every shipment carries a batch technical datasheet plus pentane content and residual styrene monomer certificates for customs and QC. Mixed containers are accepted, so you can trial two grades in one order before committing to an annual contract.
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