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EXPANDED POLYPROPYLENE (EPP) BECAUSE QUALITY OF FOOD MATTERS:

Expanded Polypropylene (EPP) is a versatile and high-performance material that is increasingly being used in food packaging applications. The use of EPP in food packaging is particularly advantageous because of its unique properties, which help to ensure that the quality of the food is maintained throughout the packaging and transport process.

One of the main advantages of EPP is its ability to provide excellent thermal insulation, which makes it ideal for use in food packaging. EPP has a low thermal conductivity, which means that it can help to keep food at a consistent temperature, whether it is hot or cold. This is particularly important in the case of perishable foods, where maintaining the correct temperature is crucial to ensure that the food remains fresh and safe to eat.

Another advantage of EPP is its durability and impact resistance. EPP is able to withstand a wide range of impacts without deforming or breaking, which helps to ensure that the food inside the packaging is not damaged during transport. Additionally, EPP is lightweight and easy to handle, which makes it an ideal material for use in food packaging applications.

EPP is also a hygienic material, which is important when it comes to food packaging. EPP is resistant to bacteria and other microorganisms, which helps to prevent contamination of the food inside the packaging. Additionally, EPP is easy to clean and sanitize, which further enhances its suitability for use in food packaging applications.

Overall, the use of EPP in food packaging is a smart choice for businesses that prioritize the quality of their food products. EPP's unique properties make it an excellent material for ensuring that food remains fresh, safe, and hygienic throughout the packaging and transport process.

Weihai Hanwell New Material Co.,LTD was established in 2020, as a member of Han Well Group with Qingdao Hanwell Hightech Plastic Co.,Ltd. With the 20 years development, now the factories cover an area of 100,000 square meters and the workshop is about 80,000 square meters, 50 production lines, the total investment is more than US dollars 50,000,000.

From the EPP raw material, EPP forming products, molded pulp products, therm forming products, plastic slip sheet, we have realized the industrial chain highly vertically integrated in every these industries. Meantime we have a lot of advanced machines from Germany, that improve the quality, reduce the cost, so we can provide competitive price and ensure the big order delivery on time.

With experience on working with the world-class customers from all over the world in the past years, our teams deal with a lot of important cases, our engineer team can help design per customers’ request. Besides this, our aim is to provide the comprehensive solution and help to achieve the constant development together.

As a responsible manufacturer, we work hard on developing new biodegradable and reused packaging, we always improve technology and reduce the energy consumption to achieve the goal of the carbon neutrality and protect our world. If you have packaging request, welcome to contact us, we will be very glad to help you.

EPP is a polypropylene foam consisting of expanded, mainly closed-cell foam particles. The EPP beads are filled with air and therefore particularly environmentally friendly(light weight). They guarantee a good joint tightness of the moulded parts and provide an excellent insulation and thermal insulation.

A high energy absorption（shock resistance）capacity combined with a very good recovery behaviour are characteristic properties of EPP in addition to the good chemical and temperature resistance. The low water absorption( water proof) due to the closed-cell structure and hydrophobic surface property, the easy cleaning of moulded parts, the good thermal insulation capacity as well as its environmental compatibility (= free of propellants and other chemical blowing agents) round off the property profile of EPP.

For the use as reusable packaging and reusable transport and insulation containers, the excellent material properties of EPP are used in an ideal form.

Processing

EPP is processed on automatic foaming machines which are designed for a steam chamber pressure of at least 5 bar. The foam particles are transported from a pressurized container via injectors into the mould. Since EPP does not contain any blowing agent, it is necessary to compress the foam particles in the mould. Welding of the EPP beads to a molded part is done by using water vapor as heat transfer medium. The demoulding is done by mechanical ejectors and/or compressed air. For dimensional stabilization, the molded parts must be tempered (= dried) at approx. 80°C after demolding.

Application areas

The specific product properties of EPP are innovative and unrivalled and make EPP a multifunctional material with almost unlimited design possibilities for a wide range of applications.

EPP proves itself in areas where strength at low weight, high stiffness or good thermal properties are required, such as

• Automobiles as energy-absorbing foam such as bumpers, side impact protection or for sun visors or neck supports
• As protective and reusable packaging for sensitive products
• Electronic engineering as well as heating, air conditioning and sanitary engineering as a multifunctional part with multiple uses (impact protection, thermal insulation)
• In safety relevant products such as child seats and bicycle helmets
• The toy industry or the design and furniture sector
• For the transport of temperature-sensitive foodstuffs from A to B