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SUNCHEM · Grade B High Expansion

High Expansion EPS Resin
Grade B

Ultra-high foaming ratio EPS for low-density block moulding and large-format packaging. Grade B specifications deliver foam multiples up to 100× for minimal-density applications.

Product Overview

High Expansion Grade EPS Resin (B Series)

High expansion grade EPS is designed for applications requiring very low foam density. Compared to standard grade, B-series beads achieve higher foam multiples, making them suitable for large low-density blocks, electronic packaging components and craft/decorative foam products.

6 bead size specifications (B-103 to B-108) available for different processing equipment and product requirements.

Low-density blockElectronic packagingCraft foamLarge-format mouldingDecorative EPSFloat balls

Quick Reference

BrandSUNCHEM
Model SeriesB High Expansion Grade (B-103 ~ B-108)
Bead Size Range0.30 – 1.60 mm
Foam Multiple20× – 100×
Foam Density10 – 50 g/L
CertificationsUL E248974, B1, Japan Hygienic
Packing25 kg bag · 800 kg big bag · 1200 kg big bag
Min. Order17 MT

Technical Specifications

Grade B — High Expansion EPS Resin Specifications

SpecificationBead Size (mm)Foam MultipleFoam Density (g/L)Typical Application
B-1031.00 – 1.6080 – 100×10.0 – 12.5Low-density block moulding
B-1040.85 – 1.2570 – 90×11.0 – 14.0Low-density block moulding
B-1050.70 – 1.0060 – 80×12.5 – 13.0Low-density block moulding
B-1060.50 – 0.8050 – 60×13.0 – 18.0Low-density block moulding
B-1070.40 – 0.6030 – 40×25.0 – 33.0Low-density block moulding
B-1080.30 – 0.5020 – 35×18.0 – 50.0Low-density block moulding

Specifications are indicative. Confirm with TDS for processing conditions. Available upon request.

Inquire About B-Grade High Expansion EPS

Tell us your target foam density, product type and processing equipment. We will recommend the right B-series specification and provide TDS / MSDS.