Sponge Product Testing
Applicable products: Suitable for various sponge products such as rubber sponge, polyurethane sponge, soft sponge, hard sponge, high rebound sponge, slow rebound memory sponge, composite sponge, sound-absorbing sponge, sealing sponge, cushioning packaging sponge, furniture and automotive interior sponge, etc.
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Product Introduction

Detection range
Applicable products: Suitable for various sponge products such as rubber sponge, polyurethane sponge, soft sponge, hard sponge, high rebound sponge, slow rebound memory sponge, composite sponge, sound-absorbing sponge, sealing sponge, cushioning packaging sponge, furniture and automotive interior sponge, etc.
Applicable materials: natural rubber sponge, synthetic rubber sponge, polyether polyurethane sponge, polyester polyurethane sponge, and composite reinforced sponge materials.
Applicable scenarios: Used for incoming inspection of raw materials, factory inspection of finished products, type testing, environmental and safety assessment, performance verification, engineering and product quality testing and arbitration.
Testing items
Appearance and size inspection: The appearance has no collapse, cracking, bubbles, impurities, color difference, bulging, or missing materials; Detect length, width, thickness, dimensional deviation, apparent density, cell uniformity, and flatness.
Physical and mechanical properties: tensile strength, elongation at break, compressive strength, indentation hardness, rebound rate, compression permanent deformation, tear strength, shear strength, cushioning performance testing.
Durability and Stability Performance: Repeated Compression Fatigue Life, Dimensional Stability, High Temperature Creep, Low Temperature Shrinkage, and Long Term Deformation Evaluation.
Environmental resistance performance: testing for hot air aging, low-temperature brittleness, moisture and heat resistance, water resistance, oil resistance, acid and alkali resistance, yellowing resistance, and mold resistance.
Environmental and safety performance: detection of harmful substances such as formaldehyde emissions, VOC emissions, odor levels, heavy metal content, free isocyanates, polycyclic aromatic hydrocarbons, etc.
Flame retardancy and performance evaluation: Oxygen index, horizontal/vertical combustion performance, smoke density, sound absorption performance, thermal conductivity, breathability, antibacterial and mildew resistance.

Testing standards
GB/T 19691-2009 Vulcanized Rubber Sponge
GB/T 10802-2006 General flexible polyether polyurethane foam
GB/T 24451-2021 Flexible polyurethane foam
QB/T 4861-2015 Flexible polyurethane foam for furniture
QB/T 4198-2022 slow rebound polyurethane foam
GB/T 6343-2023 Determination of apparent density of foamed plastics and rubber
GB/T 10807-2020 Determination of compression set of cellular plastics
GB 8624-2022 Classification of Burning Behavior of Building Materials and Products
GB 18583-2008 Limit of harmful substances in adhesives for indoor decoration materials
GB/T 528-2009 Determination of tensile stress-strain properties of vulcanized rubber or thermoplastic rubber
GB/T 3512-2014 Rubber, vulcanized or thermoplastic - Accelerated aging and heat resistance test in hot air
was established in 2011. As a national high-tech enterprise recognized by the Zhejiang Provincial Higher People's Court as a judicial authentication institution for construction engineering quality, we specialize in structural performance testing and safety assessment of construction projects, special equipment, communication towers, electromagnetic environments, large bridges, and building safety appraisal.
The company has more than 100 professional and technical personnel, over 90% of whom hold various medium and senior technical certificates. Equipped with complete testing equipment worth over RMB 10 million, our business scope covers the whole country.
















