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FABRIC / LOONG-FLEX®

SJ280-160S Lightweight UHMWPE UD.
Technical Profile.

A mid-premium UHMWPE UD option for lightweight soft armor programs where low weight and strong fragment resistance matter more than entry-level pricing.

SJ280-160S Lightweight UHMWPE UD

Quick Facts

Brand NameLOONG-FLEX® SA Series (Soft Armor – UHMWPE UD)

Product CodeSJ280-160S

Armor TypeSoft Body Armor

ConstructionUD Cross-Ply Laminate

ApplicationBallistic Vest / Soft Armor Panel / Plate Carrier

Product Summary

A mid-premium UHMWPE UD option for lightweight soft armor programs where low weight and strong fragment resistance matter more than entry-level pricing.

LOONG-FLEX® is part of Sinofibra's ballistic materials platform, where flexible protection, rigid composite development, and repeatable manufacturing performance are prioritized together. It supports Ballistic Protection and is suited to engineering teams that need material efficiency, scalable conversion, and clear specification control from development to production.

Key Features

Higher-performance fiber platform for lighter NIJ IIIA constructions
Eco-oriented WPU resin system
Strong fit for lightweight vest and plate-carrier inserts

Applications

Lightweight vests
Soft armor panels
Plate-carrier soft inserts

Technical Specifications

Organized into grouped sections so engineering teams can review product setup, physical properties, and ballistic performance more efficiently.

REV. 2026.Q2

Product Configuration

Brand NameLOONG-FLEX® SA Series (Soft Armor – UHMWPE UD)

Product CodeSJ280-160S

Armor TypeSoft Body Armor

ConstructionUD Cross-Ply Laminate

ApplicationBallistic Vest / Soft Armor Panel / Plate Carrier

Product FormRoll

Physical & Material Data

Areal Density (with film)160 g/m² ± 5 g/m²

Fabric Width1600 mm

Roll Length100 m (standard) / Customizable

Fiber TypeUHMWPE — SJ280 Grade

Fiber Tenacity37 – 39.5 cN/dtex

Matrix / BinderWaterborne Polyurethane (WPU)

Ballistic & Process Performance

Flexibility Rating++

Key AdvantageHigh-performance mid-premium grade; excellent for lightweight vests

Resin SystemWaterborne polyurethane — low VOC, eco-friendly

Multi-hit CapabilityExcellent

ProcessingCompatible with standard hot-press lamination

NIJ IIIA 9mm24 Plies 3.84 kg/m²

NIJ IIIA .44 Magnum27 Plies 4.30 kg/m²

Anti-Trauma Material++

V50680 ± 15 m/s

Catalog Position

BrandLOONG-FLEX®

TemplateFABRIC

SolutionsBallistic Protection

CategoryUD Fabric

Download Center

Download the full PDF TDS for complete testing conditions, processing notes, and engineering details.

Download Full PDF TDS

Proprietary Data. Unauthorized distribution strictly prohibited.

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