Armopack Panels Outperform VS. PC Sheets

2026-07-15

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Introduction

Driven by growing demand for lightweight, durable, eco-friendly materials in luggage casings, outdoor equipment housings and logistics packaging, conventional Covestro PC polycarbonate sheets have long been plagued by inherent drawbacks including poor low-temperature resistance, water absorption, surface scratches and harmful BPA content.

Recently, comprehensive performance benchmark tests have been completed between Armopack multi-layer composite panels and mainstream Covestro PC sheets. Armopack achieves revolutionary upgrades across six critical dimensions, balancing lightweight design, superior impact resistance, scratch resistance, wide weather tolerance, simplified production workflow and BPA-free safety. It delivers a next-generation high-performance material solution for luggage shells, outdoor enclosures, transport containers and more industrial applications.

1. Ultra-Light Weight, Retains Full Structural Thickness

Lightweighting is a core requirement for portable finished products and cost reduction. Armopack takes the lead in base material density:

Density of Armopack: 0.95–0.97 g/cm³, vs 1.22 g/cm³ for PC sheets. Armopack is 19%–21% lighter at identical thickness.
Outstanding performance in thin-gauge thermoforming: Armopack raw sheets can be manufactured to 1.9–2.3 mm, remaining over 1.2 mm after thermoforming. A 20-inch shell weighs only 750–850 g.
To reach the same lightweight weight target, PC sheets must be reduced to 1.7 mm, thinning to merely 0.8–0.9 mm post-forming. This causes frequent cracking during stitching and riveting, raising production waste rates. Armopack delivers a substantial, solid texture while cutting weight, balancing tactile quality and production yield.

2. Multi-Layer Composite Structure Delivers 5x Higher Impact Resistance

Covestro PC features a single-molecule homogeneous structure, with strength rising linearly and mildly with thickness. Armopack adopts a patented multi-directional multi-layer composite structure; once crossing the strength threshold, its toughness surges geometrically.

Under the same 1.2 kg finished shell weight standard:

PC sheets require 2.5 mm thickness, passing only 50 cycles in drum drop testing before damage.
Armopack allows a thicker 2.9 mm substrate, sustaining over 250 drum test cycles. Its superior impact durability perfectly fits long-distance shipping and outdoor heavy-scratch scenarios.

3. Higher Surface Hardness Cuts Production & Logistics Waste

Surface scratch resistance directly impacts finished appearance and manufacturing costs:

Pencil hardness: Armopack H–2H, Covestro PC BH–H.
PC sheets are prone to irreversible scratches during production, storage and transportation, leading to high rework and scrap costs. Armopack’s upgraded surface hardness minimizes surface damage throughout the supply chain, lowering overall manufacturing expenses long-term.

4. Wider Weather Resistance, Stable Physical Properties in Extreme Temperatures

Engineered for global shipping and year-round outdoor use, Armopack outperforms PC in temperature tolerance:

Low-temperature performance: Armopack retains full physical integrity at -40°C; PC sheets rapidly lose toughness and impact resistance below -20°C, prone to cracking in cold climates.
High-temperature stability: Both materials withstand heat above 80°C without deformation, meeting standard container shipping temperature requirements.
Thermoforming efficiency: Both materials cure instantly after forming, while Armopack’s superior elasticity enables easier demolding and faster production cycles.

5. Inherent Water Repellency, Simplified Storage & Flexible Scheduling

Covestro PC absorbs water (water absorption rate: 0.12%). Unformed PC sheets must be thermoformed within a short timeframe and stored in temperature-controlled ovens, incurring extra equipment, labor and inflexible production planning.

Armopack boasts ultra-low water absorption (<0.01%) with native water-repellent properties. No special drying ovens or climate-controlled storage are required, allowing flexible production scheduling, faster workshop turnover and reduced material waste.

6. BPA-Free Eco-Friendly Formula, Safe for Mothers & Children

Covestro PC is formulated with Bisphenol A (BPA). Under high-temperature conditions (summer heat, car trunks, tropical transit), BPA residues release persistent volatile substances, posing health risks especially to infants, kids and pregnant women.

Armopack panels are inherently BPA-free, complying with strict global environmental and safety regulations. They are ideal for children’s luggage, maternal storage cases, food-contact enclosures and other health-sensitive products.

Comparative Property Table

Performance Index	Armopack Composite Panels	Covestro PC Sheets
Material Density	0.95–0.97 g/cm³	1.22 g/cm³
Surface Pencil Hardness	H–2H	BH–H
Drum Impact Test	Over 250 cycles	50 cycles
Operating Temperature Range	-40°C ~ 80°C	-20°C ~ 80°C
Water Absorption Rate	＜0.01%	0.12%
Safety Standard	100% BPA-Free	Contains BPA, volatile under heat
Anti-Yellowing Performance	Multi-layer UV protection, no discoloration	Prone to yellowing over time

Industry Outlook

Luggage, outdoor equipment housings, logistics bins and storage goods have long relied on Covestro PC sheets, yet manufacturers face persistent pain points including excessive weight, high scrap rates, cold cracking and health hazards.

With six integrated advantages — lightweight construction, extreme impact resistance, scratch & weather resistance, moisture-free storage, efficient processing and non-toxic composition — Armopack multi-layer composite panels fully serve luggage shells, outdoor gear, cold-chain packaging, maternal & child storage and more segments. It empowers downstream manufacturers to reduce waste, upgrade product quality and capture high-end market segments.

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