Overview
Polyethylene foam beads are expanded particles made from low-density polyethylene (LDPE) or high-density polyethylene (HDPE) resins through a physical or chemical foaming process. These beads are characterized by their closed-cell structure, which provides excellent cushioning and insulation properties. They are widely used in industries requiring lightweight, durable, and moisture-resistant materials. As a versatile material, polyethylene foam beads can be molded into custom shapes or used loosely as fillers. Their recyclability and resistance to chemicals and UV radiation make them a sustainable choice for eco-conscious applications. The beads are available in various sizes (1-10 mm diameter) and densities to suit different performance requirements.
Physical and Chemical Properties
Polyethylene foam beads exhibit low thermal conductivity (0.033-0.038 W/m·K), making them effective insulators. Their closed-cell structure prevents water absorption, ensuring buoyancy and dimensional stability in humid environments. The material retains flexibility across a wide temperature range (-60°C to +80°C). Chemically, the beads are inert to most acids, alkalis, and solvents, though prolonged exposure to UV light may cause surface degradation. The foam's compressive strength varies with density (typically 20-200 kg/m³), allowing customization for load-bearing applications. Unlike cross-linked polyethylene foams, these beads can be re-melted and reprocessed, enhancing recyclability.
Main Applications
In packaging, polyethylene foam beads serve as protective void fillers for fragile items, replacing traditional materials like polystyrene peanuts. Their shock-absorbing properties make them ideal for electronics and medical device packaging. The construction industry uses them as lightweight fillers for concrete composites and insulation panels. Marine applications include life jackets and floating docks due to the beads' buoyancy and water resistance. Automotive manufacturers incorporate them in headliners and door panels for noise reduction. Emerging uses include 3D printing filaments and horticultural growth media, leveraging their moldability and aeration properties.
Safety and Storage
While polyethylene foam beads are generally safe, dust generated during handling may irritate respiratory systems. Adequate ventilation and PPE (masks, goggles) are recommended during bulk processing. The material is classified as non-flammable but will melt when exposed to open flames, potentially releasing irritating fumes. Storage should be in well-ventilated areas below 40°C, away from heat sources and oxidizing agents. Bulk bags should be stacked no more than 3 layers high to prevent compression deformation. Quality degradation may occur after 12-18 months if exposed to direct sunlight, though UV-stabilized variants are available.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with ISO 9001 certification to ensure consistent bead size distribution and density tolerances (±5%). Key specifications to confirm include bead diameter (typically 2-5 mm for packaging), density (commonly 30-100 kg/m³), and whether anti-static or flame-retardant treatments are needed. For large-volume purchases (5+ metric tons), negotiate FOB prices with quarterly contracts to hedge against polyethylene resin price fluctuations. Sample testing should verify rebound resilience (≥70% recovery after compression) and thermal stability. Regional suppliers in Asia often offer competitive pricing, but factor in shipping costs for low-density materials.
Related Manufacturers
- 主营：石英砂、火山岩、竹炭、聚丙烯酰胺、聚合氯化铝、松树皮、陶粒、铸造石用英砂、斜管填料、火山石、沸石、活性炭、葡萄糖、悬浮球、空心球、彗星填料、硫酸铁、水处理石英砂、喷砂除锈、河道治理、尾水处理、污水处理厂、园林景观、流化床填料
- 主营：pps加纤、pbt树脂、abs塑胶、聚丙烯、聚乙烯pe、脱模pom、abs塑料、透明abs、pps玻纤、阻燃abs、pp李长荣、工程塑料、耐水解psu、PC原料、LDPE原料
- 主营：聚苯乙烯泡沫颗粒、水处理填料、水处理滤料
- 主营：火山岩、斜管填料、松树皮、聚苯乙烯泡沫颗粒、泡沫滤珠、竹炭、陶粒、除臭箱填料、沸石、活性碳、石英砂、生物填料、彗星滤料、流化床、空心球、喷砂除锈
- 主营：聚苯乙烯泡沫滤珠、除臭箱填料、水处理滤料、水处理填料
- 主营：回填料、火山石、火山岩、泡沫颗粒、岩浮石、除臭箱、花铺面、多孔滤料、花卉养殖、煜岩滤材、兰花养殖
- 主营：涂覆料、透明薄膜、水管材料、聚乙烯、聚丙烯、塑胶颗粒、发泡薄膜塑胶、冷热水管、农用薄膜、树脂塑胶、塑胶管道、餐盒用料、汽车配件、吹塑薄膜、包装容器、环保注塑胶、电缆屏蔽料、抗静电汽车、编织袋牛皮纸、通讯电缆护套、塑料管材原料、一次性纸杯餐盒、耐高温塑料瓶盖、电话打印机外壳、吹膜级薄膜原料
- 主营：活性炭、覆盖球、悬浮球、聚合氯化铝 组合填料、聚丙烯酰胺、聚合硫酸铁、麦饭石、火山岩、纤维球、改性纤维球、立体弹性填料、流化床填料、多面空心球、蜂窝斜管、石英砂、锰砂滤料、无烟煤滤料、海绵铁、铁碳填料、松树皮填料、竹炭填料 泡沫滤珠、膨胀剂、硅灰、氢氧化钙、氧化铝
- 主营：PE再生料、中空PE再生料、吹膜HDPE再生料、再生HDPE颗粒、改性再生PE颗粒、聚乙烯pe管道颗粒、聚乙烯PE回料、高密度聚乙烯PE颗粒、pe再生颗粒、低压聚乙烯PE颗粒、吹塑HDPE再生颗粒、再生PE低压颗粒、HDPE再生颗粒、聚乙烯HDPE、HDPE中空颗粒、塑木HDPE颗粒、再生pe低压颗粒、低压聚乙烯PE再生料、改性HDPE再生颗粒、HDPE再生塑料颗粒、环保HDPE再生颗粒、防水卷材HDPE颗粒、户外家具HDPE专用、HDPE再生料、HDPE回料
- 主营：排潮管、固定节、保温管、地埋聚氨酯管、埋地弯头、固定支架、无缝钢管、保温弯头、出地弯头、直埋弯头、保温端封、蒸汽管道、保冷管道、蒸汽拖拉管、夹套蒸汽管、出入地弯头、蒸汽输送管、埋地蒸汽管、地埋疏水节、保温疏水节、直埋蒸汽管、出地面弯头、地埋蒸汽管、蒸汽排潮装置、放水密封装置、连续疏水装置
- 主营：无纺布、dnda-8320、实华粉、聚乙烯、聚丙烯、均聚注塑、dfda-7042、低密度、鞋材料、hdpe伊朗、pph-g1500h、高光泽pe、茂金属pe、拉丝级pp、注塑级pp、人造草料、食品包装、实华230粉、汽车灯罩、包装塑胶、注塑丙料、电子汽车、光纤网线、电子音响、电线电缆
- 主营：聚乙烯、dmf环保、环保溶剂
- 主营：羟基磷灰石除氟滤料、AFM活性玻璃滤料、钾明矾、聚丙烯酰胺、聚合氯化铝、聚苯乙烯泡沫颗粒、SDG酸气吸附剂、氧化铁脱硫剂、果壳活性炭、椰壳活性炭、竹炭、柱状活性炭、粉状活性炭、松树皮、蜂窝活性炭、石英砂、无烟煤滤料、火山岩、海绵铁滤料、纤维球滤料、慧星式纤维滤料、纤维束、斜管、多面空心球、立体弹性填料
- 主营：聚丙烯、聚乙烯、聚苯乙烯、SBS橡胶
- 主营：PET粉、液体顺丁橡胶、羧基丁腈橡胶、环保降解PVA聚乙烯醇、TPU粉、塑胶原料、EAA粉、环保降解塑料、特殊工程塑料、各种塑胶粉料、各种液体橡胶