For example, cushioning packaging materials are used in the packaging of some electrical products to ensure good packaging and avoid damage. There are mainly three kinds of cushioning packaging materials, one is polystyrene foam EPS, commonly known as foam board or polyvinyl chloride; two is polyethylene foam EPE, commonly known as pearl cotton; three is polyurethane foam plastic (EPU). Shenzhen bubble bag manufacturers are here to introduce the advantages, disadvantages and applications of these cushioning packaging materials

一、聚苯乙烯泡沫材料EPS，俗称泡沫板或保丽龙：

1. Polystyrene foam EPS, commonly known as foam board or polyvinyl chloride:

优点：较好的防震缓冲性能、较高的耐压强度（压缩强度随密度的增加而增加）、较小的吸水性能、抗油脂、容易成型、低廉。

Advantages: better shockproof and buffering performance, higher compressive strength (compressive strength increases with the increase of density), less water absorption, grease resistance, easy molding and low price.

缺点：压缩后易产生塑性变形、重复使用性差、耐侯性差质地较脆、易破碎起尘。

Disadvantages: easy to produce plastic deformation after compression, poor reusability, poor weather resistance, brittle texture, easy to break and dust.

应用：家用电器和工业产品的包装。

Application: packaging of household appliances and industrial products.

二、聚乙烯泡沫塑料EPE，俗称珍珠棉：

Two, polyethylene foam EPE, commonly known as pearl cotton:

特点：密度小、柔韧性好、回复率高；防震性能优于聚苯乙烯塑料；具有独立的气泡结构，表面吸水率低；防渗透性能好；耐酸、耐碱、盐、油等有机溶剂腐蚀，耐老化性能优良；高温时不流淌，低温时不脆裂。

Features: low density, good flexibility, high recovery rate; shockproof performance is better than polystyrene plastic; with independent bubble structure, low surface water absorption; good impermeability; acid, alkali, salt, oil and other organic solvent corrosion resistance, excellent aging resistance; no flow at high temperature, no embrittlement at low temperature.

应用：高档家具、家用电器、仪器仪表、工艺礼品、木制品、玻璃陶瓷、建筑防水、地毯夹层、隔音、旅游箱包、精密零配件、各种管道保温等领域。

Application: high grade furniture, household appliances, instruments and meters, craft gifts, wood products, glass ceramics, building waterproof, carpet sandwich, sound insulation, travel bags, precision spare parts, various pipe insulation and other fields.

三、聚氨酯泡沫塑料(EPU)：分为聚酯型和聚醚型，按硬度分为软、硬、半硬三种：

Three, polyurethane foam (EPU): it is divided into polyester and polyether type. According to hardness, it can be divided into three types: soft, hard and semi rigid.

优点：回弹性好；缓冲性能好；使用温度范围广。

Advantages: good resilience; good buffering performance; wide temperature range.

缺点：承载能力小，适用范围窄，不能用于较重产品包装。

Disadvantages: small bearing capacity, narrow scope of application, can not be used for heavy product packaging.

应用：聚氨酯泡沫材料具有防霉、防腐、防虫蚀、隔音、隔热等特点，因此广泛地应用于建筑装饰行业、成型制品的缓冲包装。

Application: polyurethane foam has the characteristics of mould proofing, anticorrosion, insect protection, sound insulation, heat insulation and so on, so it is widely used in building decoration industry and cushioning packaging of molded products.