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What are the applications of expanded polypropylene (EPP) materials in the packaging industry(pp ps sheet extrusion line)

May 16,2023

With the rapid development of the packaging industry, the output of plastic packaging materials and products is increasing rapidly, and new materials, new processes, new technologies, and new products are constantly emerging. Packaging is also one of the most important uses ofexpanded polypropylene(EPP), accounting for about 4O% of the volume, covering almost all packaging industries.

Expanded polypropylene (EPP) material has excellent elasticity, impact resistance and pressure resistance, and has an excellent protective effect on goods. It has all the advantages of ordinary foam materials, and also has advantages that ordinary foam materials do not have. Expanded polypropylene (EPP) material is much lighter than ordinary foam, but has high strength, which makes EPP packaging materials cheaper to transport and have a longer service life. In addition, EPP materials are antistatic, durable, loss-free, easy to clean, and rich in color, making them widely used in the packaging industry.

Expanded polypropylene (EPP) material
Application in the packaging industry

Insulated box
When the expanded polypropylene (EPP) material is used as an incubator, it can be used not only for household use, but also for the takeaway industry, cold chain logistics industry, and catering distribution industry. EPP thermal insulation performance is superior to other materials, with the advantages of thermal insulation, heat insulation, oil resistance, good shock resistance, heating and cooling, and because the expanded polypropylene (EPP) material does not add any plasticizers and foaming agents during production, It can better ensure the safety of food and is an ideal choice for the material of the incubator. EPP refrigerated incubators are mostly used for some timing and perishable items, including fresh products, seafood, fruits, vegetables and other products.

Features of EPP insulation box material
1.It has excellent heat resistance and can be used at 130 degrees;
2.It can withstand the temperature of minus 30 degrees Celsius, and the low temperature environment at this temperature will not change the performance of the incubator;
3.Light specific gravity, good elasticity, shock resistance and compression resistance, high deformation recovery rate, good absorption performance;
4.Oil-resistant, acid-resistant, alkali-resistant, resistant to various chemical solvents, non-absorbent, insulating, recyclable with almost no degradation in performance;
5.Its molecular structure has low density and light weight, making it easy to transport and carry.

Cushion packaging
Expanded polypropylene (EPP) material can also be used as cushioning packaging. EPP cushioning sheets are light in weight, good in flexibility, can be used repeatedly, and are not easy to break. They are used in computers, advanced medical appliances, precision instruments, audio-visual materials, cameras, Shockproof cushioning packaging for glass ceramics, handicrafts, various household appliances, etc., to avoid damage during transportation.

Features of EPP cushioning packaging material
1.Strong impact resistance, resistance to multiple impacts, good deformation recovery, and direction independent;
2.Strong compression and bending resistance, good creep performance, heat insulation and high temperature resistance (130〬C);
3.Good friction performance, it is not easy to slide when in contact with the smooth surface of the product, and does not damage the surface of the product;
4.Does not contain harmful foaming agents such as Freon, can directly contact food, and recycled materials can be re-injected or extruded.

Food packaging
Because expanded polypropylene (EPP) is odorless, non-toxic, clean and hygienic, and has good thermal stability and thermal insulation properties, it is also used in various food or meat packaging. Such as: food trays and containers used in microwave ovens and refrigerators, various utensils (plates, plates, bowls, boxes, etc.) Packaging of low-acidity foods such as applesauce and yogurt in containers.

Features of EPP food packaging materials
1.Environmentally friendly food-grade materials, the foaming process is only a physical molding process without any additions;
2.Resistant to boiling water, thermoformed plates have sufficiently high impact strength at low temperatures;
3.Can be used in cryogenic environments, the surface is comfortable and soft;
4.Antibacterial, odorless, environmentally friendly, and reusable.

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