a breathtaking night view of a large city. The skyline is a forest of skyscrapers, each one reaching towards the heavens. Their facades are lit up in a dazzling array of colors and patterns. Some buildings have bright, static lights that outline their sharp edges, while others feature dynamic light shows that change constantly, creating a sense of liveliness and modernity. Down on the streets, a network of roads is filled with the hustle and bustle of traffic. The headlights of cars and buses form white beams cutting through the night, while the taillights create red streams that seem to flow like rivers of light. The movement of these vehicles gives the impression of a city that never sleeps. The sidewalks are dotted with people, though they appear small from this perspective. They add a human element to the otherwise towering and mechanical cityscape. Above it all, the night sky is a deep, dark blue, providing a stark contrast to the bright city lights below. A few stars can be seen faintly, almost overshadowed by the city's intense illumination. This image truly conveys the energy and grandeur of an urban center at night.

Foam PE vs. Foam EVA: A Comprehensive Analysis

EVA Foam, PE Foam / / Leave a Comment

Key Performance Comparison of Foam PE and EVA Materials

Fundamental Physical Properties

  • PE Foam:
  • Closed-cell structure with 95% closed-cell rate (ASTM D2856)
  • Density range: 25-200 kg/m³
  • EVA Foam:
  • Open-cell structure with density 65-85 kg/m³ (ISO 845)
  • Shore C hardness: 35-80 (ASTM D2240)

Environmental Adaptability

  • PE Foam:
  • Temperature range: -50°C to +80°C (UL 746B)
  • Ideal for cold chain packaging
  • EVA Foam:
  • Temperature range: -20°C to +60°C (GB/T 16422.2)
  • Suited for fitness equipment

Impact of Production Processes on Material Performance

PE Compression Molding Technology

  • Secondary cross-linking enhances cell uniformity (SEM test report)
  • Reduces energy consumption by 18% vs. traditional processes

EVA Thermal Compression Molding

  • Optimal foaming temperature: 180-200°C (DSC analysis)
  • Molding pressure: 0.8-1.2 MPa (industry measured)

Material Selection Guide for Specific Industries

Protective Packaging Sector

  • PE Foam:
  • High shock absorption (e.g., drone packaging: 82% peak impact absorption)
  • EVA Foam:
  • Lightweight solutions (e.g., medical device packaging: 30% weight reduction)

Sports Equipment Manufacturing

  • EVA:
  • Anti-slip yoga mats (friction coefficient ≥0.8, GB/T 3903.21)
  • PE:
  • Flotation rods (72-hour water absorption <1%, ASTM D3575)

FAQ Section

Q1: Tear strength differences?

  • PE: Transverse tear strength 28 kN/m (ISO 34-1)
  • EVA: Longitudinal tear strength 19 kN/m
  • Recommendation: PE for heavy-duty packaging.

Q2: Stability in high humidity?

  • PE: Moisture permeability 0.05 g/(m²·24h) (JIS Z0208)
  • EVA: Moisture permeability 0.35 g/(m²·24h)

Q3: Surface printing compatibility?

  • EVA: Surface tension >36 dyn/cm (improved via flame treatment)
  • Recommendation: UV inkjet (adhesion ≥4B, ASTM D3359).

Q4: Low-temperature performance?

  • PE: 90% compression rebound at -30°C (ASTM D3574)
  • EVA: Drops to 67% under same conditions.

Q5: Antioxidant needs?

  • PE: Add 0.3-0.5% 1076 antioxidant for outdoor use.
  • EVA: Use hindered amine light stabilizer combinations.

WELLE Trade has over 20 years of experience in the production and processing of PE/EVA/TPE foams, so you may want to consult with them if you have any sourcing needs.

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