Inner Tray Materials Guide
Everything on inner trays, foams, blister packs, and pulp molds.
Market Analysis of Common Insert Tray Materials
⭐⭐⭐⭐⭐ Mainstream Materials
Market share: over 80%
• EPE foam (40%)
• Corrugated board (25%)
• EPS foam (20%)
• EVA foam (15%)
• Thermoformed plastic (12%)
⭐⭐⭐ Specialist Materials
Market share: around 15%
• Flocked inserts (premium products)
• Polyurethane sponge (precision instruments)
• Non-woven fabric (apparel and footwear)
• Molded pulp (eco requirements)
⭐⭐ Emerging Sustainable Materials
Market share: around 5%
• PLA biodegradable materials
• Starch-based materials
• Honeycomb board
• Bamboo fiber composites
Detailed Analysis of Mainstream Insert Materials
✨ EVA Foam Insert
Foamed from ethylene-vinyl acetate copolymer, with excellent physical and chemical properties — light, soft and resilient.
• Density: 0.035-0.18 g/cm³
• Rebound rate: ≥85%
• Cost: $2-8/dm³
• Market share: 15% (mid-to-high-end products)
• Applications: premium electronics, precision instruments
• Traits: antistatic, chemically resistant
💎 EPE Foam Insert
Foamed from low-density polyethylene resin with a distinctive bead structure — an eco-friendly packaging material.
• Density: 0.018-0.035 g/cm³
• Rebound rate: ≥90%
• Cost: $0.8-2.5/dm³
• Market share: 40% (the most frequently used)
• Applications: appliances, consumer electronics, craft goods
• Traits: 100% recyclable, excellent value
🔍 Thermoformed Insert
A thermoforming process where heated plastic sheet is vacuum-formed; commonly PET, PVC and PS.
• Thickness: 0.15-2.0 mm
• Clarity: ≥85% (clear grades)
• Cost: $1.5-6/dm²
• Market share: 12% (the mainstay of clear packaging)
• Applications: consumer electronics, cosmetics, food
• Traits: transparent display, precise forming
📐 Folded Cardboard Insert
High-quality board with precise structural design and folding, forming a protective packaging insert.
• Grammage: 250-600 g/m²
• Whiteness: ≥80% ISO
• Applications: premium gifts, cosmetics, tea
• Traits: excellent print results, fully customizable
📦 Corrugated Cushioning Insert
Made from single- or double-faced corrugated board; the fluted structure delivers excellent cushioning and load capacity.
• Types: 3-, 5- and 7-ply corrugated
• Thickness: 3-15 mm
• Applications: appliances, logistics, building materials
• Traits: lightweight and economical
🌱 Molded Pulp Insert
Made from pulp via a dedicated molding process — screened, dewatered, formed and dried into a three-dimensional pack.
• Density: 0.3-0.6 g/cm³
• Decomposition: 45-90 days (composting conditions)
• Applications: electronics, food, medical supplies
• Traits: 100% natural, degrades quickly
Material Selection Guide
| Product Type | Recommended Material | Primary Consideration | Alternative |
|---|---|---|---|
| Precision Electronics | EVA Foam | Antistatic, precision protection | EPE Foam |
| Mid/Low-End Electronics | EPE Foam | Value for money, cushioning | Corrugated Cushioning |
| Products Needing Visibility | Thermoformed Insert | Clarity, appearance | EVA Foam |
| Premium Gift Packaging | Folded Cardboard | Print result, brand image | EVA Foam |
| Transport Packaging | Corrugated Cushioning | Light weight, cost control | EPE Foam |
| Sustainability-Driven Products | Molded Pulp | Biodegradable, sustainable | Folded Cardboard |
Cost-Benefit Analysis
Relative Cost (low → high)
Sustainability Ranking
Practical Selection Advice
- Budget first:EPE foam or corrugated cushioning — low cost with adequate protection
- Brand image:EVA foam or folded cardboard lifts the perceived tier and the unboxing experience
- Sustainability requirements:Molded pulp is the first choice and aligns with sustainability goals
- Product visibility:Nothing replaces a thermoformed insert for showing product detail
- Volume production:Account for tooling amortization — EVA and molded pulp suit large runs
- Multi-function needs:Folded cardboard allows tiered storage and uses space most efficiently
Industry Trends
Technology Directions
- Bio-based materials: degradable options such as PLA and PHA
- Nanotechnology: modifying traditional materials for better performance
- Smart materials: temperature and humidity indication
- 3D printing: personalization and rapid prototyping
Market Outlook
- Rising environmental awareness: growing demand for degradable materials
- Personalization: a shift toward small runs and many variants
- Cost optimization: automation reduces labor cost
- Regulation: plastic restrictions accelerate new materials
Detailed Technical Comparison
✨ EVA Foam Insert — Detailed Specifications
Physical Properties
• Density: 0.035-0.18 g/cm³
• Hardness: Shore C 15-45
• Compressive strength: 0.3-1.5 MPa
• Rebound rate: ≥85%
• Tear strength: ≥2.5 N/mm
• Tensile strength: ≥0.8 MPa
Environmental Tolerance
• Service temperature: -40°C to +80°C
• Water absorption:<1%
• UV resistance: does not age in long-term use
• Chemical resistance: suits a wide range of environments
• Antistatic: suitable for electronics
Application Advantages
• Smooth, fine surface with a premium feel
• Available in many colors for strong visual effect
• Precise machining for an exact fit
• Supports complex geometry
• Long tool life and high throughput
💎 EPE Foam Insert — Detailed Specifications
Physical Properties
• Density: 0.018-0.035 g/cm³
• Tensile strength: ≥80 kPa
• Compressive strength: ≥50 kPa
• Rebound rate: ≥90%
• Thermal conductivity: 0.034 W/(m·K)
Safety and Environment
• Water absorption:<0.1%
• Fire rating: class B1 (flame retardant)
• Service temperature: -60°C to +80°C
• Non-toxic and odorless, food-grade compliant
• 100% recyclable
Cost Advantages
• Low raw material cost
• Simple processing
• Reusable
• Stable supply chain
• Well suited to large runs
🔍 Thermoformed Insert — Detailed Specifications
Forming Parameters
• Thickness range: 0.15-2.0 mm
• Forming accuracy: ±0.1 mm
• Tensile strength: 40-60 MPa (PET)
• Clarity: ≥85% (clear grades)
• Temperature range: -20°C to +60°C
Material Characteristics
• PET: eco-friendly, high clarity, heat resistant
• PVC: low cost, easy to process, tough
• PS: high rigidity, good formability
• PP: food grade, strong chemical resistance
• Oxygen transmission rate:<0.1cc/m²·day·atm
Application Traits
• Perfect for transparent display
• Can carry printed graphics and text
• Formed in one pass with high throughput
• Structurally stable and impact resistant
• Ideal for precise product location
Quality Standards and Test Methods
Physical Property Testing
Density Test
GB/T 6343-2009 — determination of apparent density of cellular plastics and rubbers
Compressive Strength
ASTM D1621 — compressive properties of rigid cellular plastics
Resilience
ASTM D3574 — standard test methods for flexible cellular materials
Safety and Environmental Certification
Food Contact Certification
• FDA (US Food and Drug Administration)
• EU 1935/2004 (EU food contact materials regulation)
• GB 4806 series (China food safety standards)
Environmental Certification
• FSC (Forest Stewardship Council)
• PEFC (Programme for the Endorsement of Forest Certification)
• Cradle to Cradle
Supplier Selection and Sourcing Guide
Supplier Evaluation Criteria
- • Production capacity:Annual output, equipment level, technical capability
- • Quality system:ISO certification, quality processes, test equipment
- • Delivery capability:On-time rate, inventory management, logistics network
- • Cost competitiveness:Transparent pricing with a sound cost structure
- • Service level:Technical support, after-sales service, responsiveness
Sourcing Considerations
- • Sample approval:Request samples and test them in practice
- • Clear specifications:Detailed technical parameters and quality requirements
- • Price breakdown:Understand material, process and tooling costs
- • Lead time:Plan production cycles and inventory sensibly
- • Quality assurance:Establish quality standards and inspection procedures
Cost Optimization Strategies
- • Bulk purchasing:Plan order quantities to bring the unit price down
- • Standardized design:Reduce customization and use common specifications
- • Material selection:Balance performance requirements against cost
- • Process optimization:Simplify the workflow to improve efficiency
- • Long-term partnerships:Build strategic supplier relationships
Typical Industry Case Studies
📱 Electronics — Premium Smartphone Packaging
Solution
- • Main protection: EVA foam insert, precision cut to the phone profile
- • Accessory retention: small thermoformed trays for charger and cable
- • Antistatic handling: antistatic materials throughout to protect components
- • Presentation: black EVA foam raises the premium feel
Results
- • Transit damage rate:<0.1%
- • Unboxing satisfaction: 95%+
- • Packaging as share of cost: 2-3%
- • Brand image lift: significant
💄 Cosmetics — Fragrance Gift Set
Solution
- • Premium design: folded cardboard insert printed with brand logo and pattern
- • Tiered storage: a multi-level structure holding the fragrance and testers separately
- • Material upgrade: 250 g white card with UV varnish for a better feel
- • Sustainability: FSC-certified paper in line with sustainability goals
Business Value
- • Brand awareness lift: 30%
- • Repeat purchase growth: 25%
- • Social media sharing: markedly higher
- • Cost increase: only 10-15%
🥚 Food — Organic Egg Packaging
Solution
- • Sustainable material: molded pulp insert, 100% biodegradable
- • Precision forming: an individual pocket per egg to prevent collisions
- • Cushioning: a multilayer fiber structure absorbs transit shock
- • Breathable design: keeps eggs fresh and extends shelf life
Environmental Benefits
- • Carbon footprint reduction: 60% (vs. plastic packaging)
- • Decomposition: 45-60 days
- • Breakage reduction: 80%
- • Raises consumer environmental awareness
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