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，俗稱泡沫板或保麗龍：

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

優點：較好的防震緩沖性能、較高的耐壓強度（壓縮強度隨密度的增加而增加）、較小的吸水性能、抗油脂、容易成型、價格低廉。

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.

缺點：壓縮后易產生塑性變形、重復使用性差、耐侯性差質地較脆、易破碎起塵。

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

應用：家用電器和工業產品的包裝。

Application: packaging of household appliances and industrial products.

二、聚乙烯泡沫塑料EPE，俗稱珍珠棉：

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

特點：密度小、柔韌性好、回復率高；防震性能優于聚苯乙烯塑料；具有獨立的氣泡結構，表面吸水率低；防滲透性能好；耐酸、耐堿、鹽、油等有機溶劑腐蝕，耐老化性能優良；高溫時不流淌，低溫時不脆裂。

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.

應用：高檔家具、家用電器、儀器儀表、工藝禮品、木制品、玻璃陶瓷、建筑防水、地毯夾層、隔音、旅游箱包、精密零配件、各種管道保溫等領域。

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)：分為聚酯型和聚醚型，按硬度分為軟、硬、半硬三種：

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.

優點：回彈性好；緩沖性能好；使用溫度范圍廣。

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

缺點：承載能力小，適用范圍窄，不能用于較重產品包裝。

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

應用：聚氨酯泡沫材料具有防霉、防腐、防蟲蝕、隔音、隔熱等特點，因此廣泛地應用于建筑裝飾行業、成型制品的緩沖包裝。

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.