P (P-301 / 302 / 303 / 401 / 501)

EPS High Expansion Grade Raw Material

Name: EPS High Expansion Grade Raw Material
Brand: ChinaEps
Availability: PreOrder

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EPS High Expansion Grade Raw Material — eps raw materials by ChinaEps, ISO 9001 & REACH & RoHS certified.

We supply high-expansion EPS beads P series — for low-density 12-18 g/m³ packaging, 5 grades. MOQ 5 tons FOB China.

Key Specifications

Material

Expandable Polystyrene (EPS)

Grade

High Expansion

Recyclability

Multiple Reuse Cycles

Applications

Construction, Packaging, Automotive, Consumer Goods

CE and ISO 9001 Certified Consistent Quality, Batch-Tested 24h Technical Response

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Technical Specifications

5 models

Parameter	P-301	P-302	P-303	P-401	P-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	75-90	65-75	55-70	45-55	30-50
Density	11-13 g/L	13-15 g/L	14-18 g/L	18-20 g/L	20-25 g/L
Blowing Agent (Pentane)	6.5-7.5%	6.5-7.5%	6.5-7.5%	6.5-7.5%	6.5-7.5%
Residual Styrene Monomer (SM)	≤5000 ppm	≤5000 ppm	≤5000 ppm	≤5000 ppm	≤5000 ppm
Moisture	≤1.0%	≤1.0%	≤1.0%	≤1.0%	≤1.0%
Coating Agent	≤3200 ppm	≤3200 ppm	≤3200 ppm	≤3200 ppm	≤3200 ppm
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.

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What This Grade Solves

Production problems eliminated by this raw material grade — with engineered, measurable solutions.

The Problem 1

Standard EPS beads cannot achieve density below 8 kg/m³ — limits product cost optimization for low-density applications

How This Grade Solves It

High-expansion beads achieve 4-8 kg/m³ density for super-light packaging — 40-50% lighter than standard insulation grade.

The Problem 2

Lightweight packaging customers (fish boxes, large protective inserts) need lowest possible density for shipping cost optimization

How This Grade Solves It

High-expansion variant cuts material cost per unit volume by 30-40% — directly improves margin on low-density products.

Engineered Performance Advantages

Every advantage backed by measurable specs — no marketing claims without data.

Expansion Ratio

70-100×

vs standard 40-80×

Higher expansion = lower density = lower material cost per unit volume.

Target Density

4-12 kg/m³

vs standard 8-30

Lowest densities for super-light packaging.

Material Cost Savings

30-40% per unit volume

vs standard density

Direct margin improvement on low-density products.

Real Production Applications

See where this grade fits in real factories.

Ultra-light EPS packaging insert and cushioning for fragile goods

Industrial cushioning for electronics and high-value goods

Low-density fruit and produce packaging crates

Bulk EPS blocks for export packaging production

Build a Complete EPS / EPP Line

This raw material grade fits into the full ChinaEps supply chain — machinery, complementary grades, and turnkey lines from one supplier.

Downstream — Finishing & Packing

PE Pre-Expander

Specialized recipe required for high-expansion processing.

SM Shape Molding

Low-density beads work best with shape molding for finished packaging products.

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

Direct material cost — 30-40% lower per unit volume vs standard grade

Throughput

25kg bags or 1,000kg jumbo bags

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Product FAQ

The questions buyers ask most often before placing an order.

What's the trade-off vs standard grade?

Lower compressive strength (50-90 kPa vs 100-200 kPa). Suitable for packaging and unloaded insulation; not for structural or load-bearing applications.

Compatible with FR additives?

Limited — FR additives reduce expansion ratio. For FR low-density needs, use specific FR variants.

Shelf life?

9-12 months — slightly shorter than standard due to higher pentane content for expansion.